JPH08201563A - Ventilating and air-conditioning equipment of nuclear power station - Google Patents

Abstract

PURPOSE: To obtain ventilating and air-conditioning equipment of a nuclear power station which can improve the properties of disposition and maintenance of apparatuses by omission of standby machines and can maintain the performances of the equipment needed as a whole at an ordinary time even when some of blowers and exhausters stop. CONSTITUTION: At the time of an ordinary operation, an operation control device 30 controls a supply air quantity regulating damper control device 25 so that the air quantity of each of blowers 4a to 4c be about 33 percent and the openings of supply air quantity regulating dampers 15a to 15c on the upstream side of the blowers 4a to 4c are regulated. As to the air quantity of each of exhausters 9a to 9c, likewise, the openings of exhaust air quantity regulating dampers 19a to 19c are regulated. In the case when the blower 4a fails and stops in this state, the openings of the supply air quantity regulating dampers 15b and 15c are increased by transmitting an opening increase control signal to the supply air quantity regulating damper control device 25, and supply air quantities by the blowers 4b and 4c are changed to a design rated air quantity fio (=50 percent).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation and air-conditioning system for performing ventilation and air conditioning for each building in a nuclear power plant so as to maintain a predetermined environment, and particularly when a part of a blower or an exhaust fan is stopped. The present invention relates to a ventilation and air conditioning system for a nuclear power plant having a configuration with consideration.

[0002]

2. Description of the Related Art The ventilation and air conditioning equipment of a nuclear power plant is operated to maintain the power generation and safety of the nuclear power plant during the rated output operation of the power plant, and at the time of periodic inspection, It is a facility that needs to be operated to maintain the environment, etc. and is operated throughout the year regardless of the operating conditions of the power plant. Examples of publicly known technologies relating to this ventilation and air conditioning equipment include the following.

In this known technique, a large number of blowers and exhaust fans, which are dynamic equipment, and exhaust treatment devices and filters, which are static equipment, are provided in the ventilation and air conditioning equipment. By using one blower / exhaust blower / exhaust treatment device / filter (hereinafter referred to as a blower, etc.) as a standby unit for each, it is necessary to ensure the necessary air volume for the entire facility at all times. .

That is, during normal operation (at the rated output of the power plant), all the blowers other than one standby machine are operated to supply the required capacity to the reactor building. On the other hand, when inspecting the ventilation and air conditioning equipment, one of the many blowers or the like that is normally operating is stopped and the standby unit is started. As a result, it is possible to check the blower or the like that has stopped. Further, at this time, since the operation of the other blowers and the like continues as it is, it is possible to maintain the required performance of the entire equipment. Further, for example, when one of the blowers stops due to a failure, this is detected by the blower control device, and one blower, which is a standby machine, is automatically or manually activated and operated. Further, for example, when one of the exhaust fans stops due to a failure, this is detected by the exhaust fan control device, and one of the exhaust fans, which is a standby machine, is automatically or manually activated and operated. As a result, it is possible to maintain the required performance of the entire facility even when the breakdown is stopped.

[0005] In this known technique, a large number of blowers and exhaust fans for ventilation and air conditioning equipment are provided without a spare unit, and this is activated when, for example, any one blower stops. This is detected by the state detection setting device, and the exhaust fans of the system (for example, two units) corresponding to this are stopped, and the openings of the air volume adjusting valve, the variable resistance valve, etc. are adjusted. As a result, when a part of the blower or the blower is stopped, the negative pressure inside the building can be maintained at a predetermined value while reducing the air volume.

[0006]

However, the above-mentioned known techniques have the following problems. In other words, ventilation air conditioning equipment is laid inside the building of a nuclear power plant, but since the equipment dimensions of the blower / exhaust / exhaust treatment device and the size of the ducts connected are large, install these as the number of blowers increases. The restrictions on the arrangement of equipment in the room increase, and the equipment arrangement becomes worse. In the known technique, a spare unit is added in addition to the originally required number of units, so that the arrangement of devices in a room in which a blower or the like is installed is deteriorated, the room volume is increased, and a large restriction is given to the building design. In addition, the amount of parts to be checked and replaced during maintenance and inspection increases, and the amount of maintenance and inspection work associated therewith also increases, that is, equipment maintainability deteriorates.

Further, in the known art, the above-mentioned problem does not occur because a spare unit is not provided, but when a part of the blower / exhaust unit is stopped, the negative pressure is maintained but the air volume decreases, It is not possible to maintain the performance required for the entire equipment under normal conditions as it is even during a partial outage.

Further, in general, in order to maintain the negative pressure in the building, the discharge output of the blower is often set to be larger than the suction output of the blower, and the air volume-pressure characteristic of one blower is different from that of the blower. It's different. That is, during normal operation when all the units are operating, the exhaust air volume of all the blowers is equal to the supply air volume of all the blowers, and the discharge pressure of all the blowers is the suction pressure of all the blowers. Operated at a pressure higher than the pressure. Here, for example, considering the case where the corresponding (for example, one) exhaust fan is stopped in accordance with the stop of one blower, as described above, the air volume-pressure characteristic of one fan is Since it differs from the air blower, the air volume and pressure of the rest of the blower and the air volume and pressure of the rest of the blower deviate slightly from each other, resulting in an imbalance. In the known technology, the valve imbalance of the variable resistance valve is adjusted to correct the pressure imbalance at this time, and the pressure balance at the normal time before the stop is maintained as it is. No particular consideration is given to balancing. Also, as mentioned above, the air volume decreases at the time of stop, but at this time, the air volume decreases uniformly in all the rooms in the building,
In particular, it is necessary to selectively reduce the air volume from other rooms that are not strictly required to maintain the air volume to the room that is strictly required to maintain the air volume to prevent a decrease in the air volume. No consideration was given to supplying air volume.

A first object of the present invention is to provide a ventilation and air conditioning equipment for a nuclear power plant, which can improve equipment layout and equipment maintainability by omitting a spare machine.

A second object of the present invention is to provide a ventilation and air conditioning equipment for a nuclear power plant capable of maintaining the performance required as a whole of the equipment under normal conditions even when a part of the blower / exhaust fan is stopped. Is to provide.

A third object of the present invention is to provide a ventilation and air conditioning system for a nuclear power plant, which can balance the air volume of the entire blower and the entire blower when a part of the blower and the blower is stopped. That is.

A fourth object of the present invention is to selectively supply the required air volume according to the working environment required for each room in the building when a part of the blower / exhaust fan is stopped. It is to provide ventilation and air conditioning equipment for nuclear power plants.

[0013]

In order to achieve the above first and second objects, according to the present invention, a plurality of units for pumping outside air to a plurality of rooms provided in a building of a nuclear power plant are provided. A blower, a plurality of exhaust fans that discharge exhaust air from each of the plurality of rooms, and a stop detection unit that detects a stop state of each of the plurality of fans and the exhaust fan, and In the ventilation air conditioning equipment of a nuclear power plant that performs each ventilation and air conditioning, normally, the supply air volume of each blower and the exhaust air volume of each exhaust fan, the maximum air volume required for the entire ventilation air conditioning equipment, and the number of each blower and each The normal air volume divided by the number of blowers, and when the stop detection unit detects a partial stopped state of the plurality of blowers and the blowers, the supply air volume and the stop of the remaining blowers that are not stopped. Not yet further has an air volume changing means for changing at least one of the exhaust air volume of each of the exhaust fans to an air volume of a size different from the normal air volume, and at least one of the plurality of blowers and exhaust fans Is
The design rated air volume of each unit is configured to be larger than the normal air volume, and the air volume changing means designs at least one of the supply air volume of each blower and the exhaust air volume of each exhaust fan from the normal air volume. Provided is a ventilation air conditioning system for a nuclear power plant, which is a means for changing to a rated air volume.

[0014] Preferably, the HVAC of the nuclear power plant, the plurality of blowers, respectively design rated airflow f _i0, is required blower number of few cars plurality n _i stand for the entire HVAC When the maximum air flow rate is 100%, f _i0 = 100 / (n _i -1)%, and the air flow rate changing means normally sets the air flow rate of each blower to 100 / n _i. Percentage normal air flow rate f _i1, and when the stop detection unit detects the stopped state of any one of the plurality of blowers, the air flow rate of each blower is correspondingly set to the normal air flow rate f _i1.
There is provided a ventilation air conditioning system for a nuclear power plant, characterized in that it has means for changing from _i1 to the design rated air volume f _i0 .

Further, preferably, in the ventilation and air conditioning equipment of the nuclear power plant, each of the plurality of air exhausters has a design rated air volume f _e0 , and the number of the plurality of air exhausters is n _e ,
When the maximum air volume required for the entire ventilation and air conditioning equipment is 100%, f _e0 = 100 / (n _e -1)% is established, and the air volume changing means normally operates for each exhaust gas. When the air flow rate of the air blower is set to 100 / n _e % of the normal air flow rate f _e1, and when any one of the plurality of air blowers is detected to be stopped by the stop detection means, correspondingly to each air blower, Provided is a ventilation and air-conditioning facility for a nuclear power plant, which has means for changing the air flow rate from the normal air flow rate f _e1 to the design rated air flow rate f _e0 .

More preferably, the ventilation air conditioning equipment of the nuclear power plant further has a plurality of supply duct air volume adjusting valves respectively installed in the supply ducts of the plurality of blowers, and the air volume changing means is usually Occasionally, the opening degree of the supply duct air volume adjusting valve is set to the first supply opening degree according to the normal air volume, and when the stop detecting unit detects a partial stop state of the plurality of blowers, Correspondingly, it is a means for setting the opening of the supply duct air flow control valve to a second supply opening that is larger than the first supply opening corresponding to the design rated air flow. Ventilation and air conditioning equipment is provided.

Further preferably, in the ventilation air conditioning equipment of the nuclear power plant, each of the plurality of supply duct air flow rate adjusting valves is provided upstream of the blower in the supply duct from an upstream side supply duct air flow rate adjusting valve. And a downstream side supply duct air volume adjusting valve provided downstream of the blower in the supply duct, wherein the air volume changing means includes the upstream side supply duct air volume adjusting valve and the downstream side supply duct air volume adjusting. Provided is a ventilation and air conditioning equipment for a nuclear power plant, characterized in that it is means for setting a valve to the first and second supply opening degrees.

More preferably, the ventilation air conditioning equipment of the nuclear power plant further has a plurality of exhaust duct air volume adjusting valves respectively installed in the exhaust ducts of the plurality of exhaust fans, and the air volume changing means comprises: Normally, the opening degree of the exhaust duct air volume adjusting valve is set to the first exhaust opening degree according to the normal air volume, and when the stop detecting unit detects a partial stop state of the plurality of exhaust fans, Corresponding to this, it is a means for setting the opening of the exhaust duct air volume control valve to a second exhaust opening which is larger than the first exhaust opening corresponding to the design rated air volume. Ventilation and air conditioning equipment is provided.

Further preferably, in the ventilation air conditioning equipment of the nuclear power plant, each of the plurality of exhaust duct air flow rate adjusting valves is provided in the exhaust duct upstream of the exhaust fan and upstream of the exhaust duct air flow rate adjusting device. A valve and a downstream side exhaust duct air volume adjusting valve provided on the downstream side of the exhaust fan in the exhaust duct, wherein the air volume changing means includes the upstream side exhaust duct air volume adjusting valve and the downstream side exhaust duct. There is provided a ventilation and air conditioning equipment for a nuclear power plant, characterized in that it is means for setting an air flow rate adjusting valve to the first and second exhaust opening degrees.

More preferably, in the ventilation and air conditioning equipment of the nuclear power plant, a plurality of filter means respectively provided in the exhaust duct upstream of the exhaust fan, and between the filter means and the exhaust fan. In each of the plurality of connecting ducts, and further has a plurality of connecting duct air flow rate adjusting valve provided in each of the plurality of connecting ducts, and each of the plurality of exhaust duct air flow rate adjusting valves Is equipped with an intermediate exhaust duct air flow rate adjusting valve provided downstream of the filter means in the exhaust duct and upstream of a connection portion to the connection duct. Air conditioning is provided.

Further, preferably, in the ventilation and air conditioning equipment of the nuclear power plant, the air flow rate changing means normally sets the rotation speed of the blower to a first supply rotation speed according to the normal air flow rate, and the stop detecting means. When a part of the plurality of blowers is detected to be in a stopped state, the number of rotations of the blower is correspondingly changed to a second rotation speed that is higher than the first rotation speed. A ventilation and air conditioning system for a nuclear power plant is provided, which is characterized by being a means.

More preferably, in the ventilation air conditioning equipment of the nuclear power plant, the supply rotation speed changing means changes the rotation speed of the blower using any one of a planetary gear, a fluid coupling, and a thyristor. A ventilation and air conditioning system for a nuclear power plant is provided, which is characterized by being a means.

Further, preferably, in the ventilation air conditioning equipment of the nuclear power plant, the air volume changing means normally sets the rotation speed of the exhaust fan to a first exhaust rotation speed corresponding to the normal air volume, and the stop detecting means. When a stop state of a part of the plurality of air exhausters is detected in the exhaust gas, the number of rotations of the air exhausters is set to a second exhaust gas rotation speed higher than the first rotation speed in response to the detection. Provided is a ventilation air conditioning system for a nuclear power plant, which is a rotation speed changing means.

More preferably, in the ventilation air conditioning equipment of the nuclear power plant, the exhaust rotation speed changing means changes the rotation speed of the exhaust fan using any one of a planetary gear, a fluid coupling and a thyristor. A ventilation and air conditioning system for a nuclear power plant is provided.

Further preferably, in the ventilation air conditioning equipment of the nuclear power plant, the air volume changing means automatically changes the air volume of the blower / exhaust fan to the design rated air volume by using electrical / mechanical means. Provided is a ventilation air conditioning system for a nuclear power plant, which is a control means.

More preferably, in the ventilation air conditioning equipment of the nuclear power plant, the air volume changing means gives a warning and an instruction to the ventilation air conditioning equipment manager to change the air volume of the blower / exhaust fan by manual control. And a second means for changing the air volume of the blower / exhaust fan according to the operation of the ventilation / air-conditioning facility manager based on the warning and the instruction by the first means. Ventilation and air conditioning equipment is provided.

Further, in order to achieve the above first and third objects, according to the present invention, a plurality of blowers for respectively pumping outside air to a plurality of rooms provided in the building of the nuclear power plant, A plurality of blowers that discharge exhaust air from each of a plurality of rooms, a stop detection unit that detects the stop state of each of the plurality of blowers and blowers, and a stop state of the blower is detected by the stop detection unit. When the stop detection means detects the stop condition of the blowers, the interlocking stop means that stops the operation of the corresponding number of blowers in an interlocked manner. In a ventilation air conditioning equipment of a nuclear power plant that has ventilation and air conditioning for each of the plurality of rooms, a supply air volume fine adjustment unit capable of finely adjusting the supply air volume of each blower, and an exhaust air volume of each exhaust fan. Finely adjustable exhaust air volume fine adjustment means, the stop detection means detects a partial stop state of the plurality of blowers and exhaust fans, and the interlocking stop means stops the corresponding number of exhaust fans and blowers. When
At least one of the supply air volume fine adjustment means and the exhaust air volume fine adjustment means is operated so that the supply air volume of the remaining non-stop blower and the exhaust air volume of the remaining non-stop air blower match. An air conditioning system for a nuclear power plant is provided, which comprises:

Preferably, the ventilation air conditioning equipment of the nuclear power plant further comprises a plurality of supply duct air volume adjusting valves respectively installed in the supply ducts of the plurality of blowers, and the supply air volume fine adjusting means is Provided is a ventilation and air conditioning equipment for a nuclear power plant, which is a means for finely adjusting the opening of a supply duct air flow control valve.

Further, preferably, in the ventilation air conditioning equipment of the nuclear power plant, each of the plurality of supply duct air flow rate adjusting valves is provided in the supply duct upstream of the blower from the upstream supply duct air flow rate adjusting valve. And a downstream supply duct air volume adjustment valve provided downstream of the blower in the supply duct, wherein the supply air volume fine adjustment means includes the upstream supply duct air volume adjustment valve and the downstream supply duct. Provided is a ventilation and air conditioning equipment for a nuclear power plant, which is a means for finely adjusting the opening degree of an air volume adjusting valve.

More preferably, the ventilation air conditioning equipment of the nuclear power plant further has a plurality of exhaust duct air volume adjusting valves respectively installed in the exhaust ducts of the plurality of exhaust fans, and the exhaust air volume fine adjusting means. Is a means for finely adjusting the degree of opening of the exhaust duct air flow rate adjusting valve.

Further, preferably, in the ventilation air conditioning equipment of the nuclear power plant, each of the plurality of exhaust duct air flow rate adjusting valves is provided in the exhaust duct upstream of the exhaust fan and upstream of the exhaust duct air flow rate adjusting valve. A valve and a downstream side exhaust duct air volume adjusting valve provided on the downstream side of the exhaust fan in the exhaust duct, wherein the exhaust air volume fine adjusting means includes the upstream side exhaust duct air volume adjusting valve and the downstream side. Provided is a ventilation air-conditioning facility for a nuclear power plant, which is a means for finely adjusting the opening of an exhaust duct air flow control valve.

More preferably, in the ventilation and air conditioning equipment for a nuclear power plant, the supply air volume fine adjustment means is a means for finely adjusting the rotation speed of the blower. Provided.

Further, preferably, in the ventilation air conditioning equipment for the nuclear power plant, the exhaust air volume fine adjustment means is means for finely adjusting the rotation speed of the exhaust fan. Will be provided.

More preferably, in the ventilation and air conditioning equipment of the nuclear power plant, the air volume balance adjusting means is at least one of the supply air volume fine adjusting means and the exhaust air volume fine adjusting means depending on the operation of the interlocking stopping means. There is provided an air conditioning system for a nuclear power plant, characterized by being an automatic control means for operating.

Further preferably, in the ventilation and air conditioning equipment of the nuclear power plant, the air flow rate balance adjusting means of the supply air volume fine adjusting means and the exhaust air volume fine adjusting means is manually controlled according to the operation of the interlocking stopping means. First means for giving a warning and instruction for operating at least one of them to the ventilation and air conditioning equipment manager, and the supply air volume according to the operation of the ventilation and air conditioning equipment administrator based on the warning and instruction by the first means. There is provided a ventilation air conditioning facility for a nuclear power plant, comprising: a fine adjustment unit and a second unit for operating at least one of the exhaust air volume fine adjustment unit.

More preferably, in order to achieve the above-mentioned first to third objects, in the ventilation air conditioning equipment of the nuclear power plant, at normal times, the supply air volume of each blower and the exhaust air volume of each exhaust fan are controlled by ventilation air conditioning. The maximum air volume required for the entire equipment is the normal air volume divided by the number of each blower and the number of each exhaust fan, and the stop detection means detects a partial stop state of the plurality of blowers and exhaust fans, and When the corresponding number of exhaust fans and blowers are stopped by the interlocking stop means, at least one of the supply air volume of each remaining non-stop fan and the exhaust air volume of each remaining non-stop air blower is set to the normal air volume. Further has an air volume changing means for changing the air volume to a different size, and at least one of the plurality of blowers and exhaust fans has a design rated air volume of each unit from the normal air volume. The air volume changing means is a means for changing at least one of the supply air volume of each blower and the exhaust air volume of each exhaust fan from the normal air volume to the design rated air volume. Ventilation and air conditioning equipment for a nuclear power plant is provided.

Further, in order to achieve the above first and fourth objects, according to the present invention, a plurality of blowers for respectively pumping outside air to a plurality of rooms provided in a building of a nuclear power plant; A plurality of blowers for discharging exhaust air from each room, stop detection means for detecting the respective stop states of the plurality of blowers and blowers, and the stop state of the blower was detected by the stop detection means Occasionally, there is an interlocking stop unit that interlocks the operation of the corresponding number of blowers and stops the operation of the corresponding number of blowers when the stop detection unit detects the stopped state of the blowers. However, in the ventilation and air conditioning equipment of a nuclear power plant that performs ventilation and air conditioning of each of the plurality of rooms, a plurality of units that distribute and guide the total supplied air volume by the plurality of fans to each room in the building are provided. Each installed in the supply duct,
A plurality of distribution / supply duct air flow rate adjusting valves capable of adjusting the air flow rate to each room, and the stop detection means detects a partial stop state of the plurality of blowers and exhaust fans, and the interlocking stop means responds. When a plurality of exhaust fans and blowers are stopped, the plurality of distribution supply duct air volumes are provided so as to preferentially distribute the supply air volumes of all the remaining fans that are not stopped to at least one specific room in the building. There is provided a ventilation air conditioning system for a nuclear power plant, comprising: a priority supply unit that individually adjusts the opening degree of each adjustment valve.

[0038] Preferably, in the ventilation and air conditioning equipment of the nuclear power plant, the priority supply means individually adjusts the opening of each of the plurality of distribution supply duct air flow control valves according to the operation of the interlocking stop means. Provided is a ventilation air conditioning system for a nuclear power plant, which is an automatic control means.

Further, preferably, in the ventilation air conditioning equipment of the nuclear power plant, the priority supply means manually controls the opening degree of each of the plurality of distribution supply duct air flow rate adjusting valves in accordance with the operation of the interlocking stop means. First means for giving a warning and instruction for individual adjustment to the ventilation and air conditioning equipment manager, and the plurality of distributed supply according to the operation of the ventilation and air conditioning equipment administrator based on the warning and instruction by the first means. Second to individually adjust the opening of each duct air flow control valve
There is provided a ventilation air conditioning system for a nuclear power plant, characterized by comprising:

More preferably, the ventilation and air conditioning equipment of the nuclear power plant is provided so as to connect two adjacent rooms of the plurality of rooms provided in the building,
The priority control system further includes a plurality of transfer ducts for transferring ventilation air from one of the two rooms to the other room, and a plurality of transfer duct air flow rate adjusting valves provided in the plurality of transfer ducts, respectively. A ventilation air conditioner for a nuclear power plant is provided, wherein the supply means is means for individually adjusting the opening degree of each distribution supply duct air flow rate adjusting valve and the opening degree of each transfer duct air flow rate adjusting valve.

Further, preferably, in the ventilation air conditioning equipment of the nuclear power plant, the ventilation air conditioning equipment is installed in each of a plurality of distribution exhaust ducts for collecting exhaust air volume from each room in the building and guiding it to the plurality of exhaust fans, A plurality of distributed exhaust duct air flow rate adjusting valves capable of adjusting the exhaust air flow rate from each room, and a part of the plurality of blowers and exhaust fans is detected by the stop detection means, and the interlocking stop means responds. When a plurality of exhaust fans and blowers are stopped, priority is given to individually adjusting the opening of each of the corresponding distribution exhaust duct air volume adjustment valves according to the opening adjustment of the distribution supply duct air volume adjustment valve by the priority supply means. There is provided a ventilation air conditioning system for a nuclear power plant, further comprising exhaust means.

More preferably, in the ventilation and air conditioning equipment of the nuclear power plant, the priority exhaust means individually adjusts the opening degree of each of the plurality of distribution exhaust duct air volume adjustment valves according to the adjustment by the priority supply means. There is provided a ventilation air conditioning system for a nuclear power plant, characterized in that it is an automatic control means.

Further preferably, in the ventilation air conditioning equipment of the nuclear power plant, the priority exhaust means manually controls the opening degree of each of the plurality of distribution exhaust duct air volume adjustment valves in accordance with the adjustment by the priority supply means. First means for giving a warning and instruction for individual adjustment to the ventilation and air conditioning equipment manager, and the plurality of distributed exhausts according to the operation of the ventilation and air conditioning equipment administrator based on the warning and instruction by the first means. There is provided a ventilation air conditioning equipment for a nuclear power plant, comprising: a second means for individually adjusting the opening of each of the duct air flow control valves.

More preferably, in order to achieve the above first, second and fourth objects, in the ventilation air conditioning equipment of the nuclear power plant, at normal times, the supply air volume of each blower and the exhaust air volume of each exhauster are Is the normal air volume obtained by dividing the maximum air volume required for the entire ventilation and air conditioning equipment by the number of each blower and the number of each exhaust fan, and the stop detection means partially stops the blower and the exhaust fan. Is detected and the corresponding number of exhaust fans and blowers are stopped by the interlocking stop means, at least one of the supply air volume of each remaining non-stopped blower and the exhaust air volume of each remaining non-stopped exhaust fan Further has an air volume changing means for changing the air volume to a volume different from the normal air volume, and at least one of the plurality of blowers and exhaust fans has a design rated air volume of It is configured to be larger than the air volume, and the air volume changing means is a means for changing at least one of the supply air volume of each blower and the exhaust air volume of each exhaust fan from the normal air volume to the design rated air volume. Ventilation and air conditioning equipment for a nuclear power plant is provided.

Further, preferably, in the ventilation and air conditioning equipment of the nuclear power plant, the interlocking stopping means automatically operates the blower / exhaust machine by using electrical / mechanical means in accordance with the detection result of the stop detecting means. Provided is a ventilation air conditioning system for a nuclear power plant, which is an automatic control means for stopping the operation.

More preferably, in the ventilation air conditioning equipment of the nuclear power plant, the interlocking stop means ventilates a warning and an instruction for stopping the blower / exhaust fan by manual control according to the detection result of the stop detecting means. A first means for giving the air conditioner manager, and a second means for stopping the blower / exhaust fan in response to the operation of the ventilation air conditioner manager based on the warning and instruction by the first means. A characteristic nuclear power plant ventilation and air conditioning system is provided.

Further preferably, the ventilation air conditioning equipment of the nuclear power plant further comprises stop instruction means for manually and selectively stopping each of the blowers and exhaust fans. Provided.

More preferably, in the ventilation and air conditioning equipment of the nuclear power plant, when one of the one blower and the exhaust fan is stopped by the stop instruction means, another blower and exhaust fan are operated by the stop detection means. The nuclear power plant, further comprising start-up and return means for starting and returning one of the blower and the exhaust fan, which have been stopped by the instruction of the stop instruction means, to the operation when a stop due to a failure of the wind turbine is detected. Ventilation and air conditioning equipment is provided.

Further, preferably, in the ventilation and air conditioning equipment of a nuclear power plant, a detection signal from the stop detecting means is inputted, and the stop detecting means detects the stop of a predetermined number or more of the plurality of blowers and exhaust fans. There is provided a ventilation air-conditioning system for a nuclear power plant, which further comprises an air flow reduction warning means for issuing a warning when it does.

[0050]

In the present invention configured as described above, the design rated air volume of at least one of the plurality of blowers and the air exhausters is the normal air volume (= maximum air volume required for the entire ventilation / air conditioning equipment / blower It is set larger than the number of For example, first, consider a case where the design rated air volume of the blower is set to be larger than the normal air volume. In normal times, each blower and each exhaust fan are operated at a normal air volume, that is, the normal air volume x number of fans = maximum air volume required for the entire ventilation and air conditioning equipment, and the performance required for the entire device is satisfied. ing. Here, when one of the blowers stops due to a failure, the stop detecting means detects this. At this time, since the number of blowers is reduced by one for the entire ventilation and air conditioning equipment, it becomes impossible to maintain the required performance as the entire ventilation and air conditioning equipment if the air volume of each blower remains at the normal air volume, but the air volume changing means. By changing the supply air volume of each remaining fan that is not stopped to a design rated air volume that is larger than the normal air volume, this reduction of one blower is covered, and the design rated air volume x 1 = The maximum air volume required for the entire ventilation and air conditioning equipment can be set. Further, for example, when the design rated air volume of the exhaust fan is set to be larger than the normal air volume, the stop state of any one of the exhaust fans is detected by the stop detection means and the remaining air volume is not stopped by the air flow changing means, as described above. Exhaust air volume of each exhaust fan is changed to the design rated air volume, and the reduced amount is covered as the design rated air volume x one reduced number of exhaust fans = maximum air volume required for the entire ventilation and air conditioning equipment. When the design rated air volume of both the blower and the exhaust fan is set to be larger than the normal air volume, each of the above actions is performed, but for example, only the design rated air volume of the blower is set to be larger than the normal air volume. For the exhaust fan, when the design rated air volume = normal air volume is set, when the operation of the exhaust air is stopped, the exhaust air volume of the entire exhaust fan decreases as it is, and the relative amount of air is supplied by the blower. Get smaller. That is, the ventilation system for the forced intake air in which the supply air volume> the exhaust air volume is implemented. On the contrary, if only the design rated air volume of the exhaust fan is set larger than the normal air volume and the design rated air volume of the blower is set as the normal air volume, exhaust air volume> supply air volume The scheme will be implemented.
As described above, even when part of the blower / exhaust fan is stopped, the performance required for the ventilation and air conditioning equipment as a whole can be maintained during normal operation. Each of the blowers has a design rated air flow rate f _i0, where f _i0 = 100 / when the maximum air flow rate required for the entire ventilation and air conditioning equipment is 100%, where n _{i is the} number of blowers.
(N _i -1) percent, and
Moreover, the air volume changing means normally sets the air volume of each blower to 1
The normal air flow rate f _i1 is set to 00 / n _i percent, and when the stop detection means detects the stopped state of any one of the plurality of blowers, the air flow rate of each blower is designed from the normal air flow rate f _i1 in response to this. It has means for changing to the rated air volume f _i0 . As a result, at normal times, the normal air flow rate f _i1 × n _i = 1
It becomes 00% and supplies the maximum supply air volume required for the entire ventilation and air conditioning equipment, and the design rated air volume f _i0 × (n _i −1) = 100% even when one unit is stopped, and it is required for the entire ventilation and air conditioning equipment. The maximum supplied air volume that can be supplied can be continuously supplied. That is, it is possible to realize a configuration in which the performance required for the entire apparatus in normal times is maintained even when one blower is stopped.

Further, the plurality of air exhausters have respective design rated air volumes f _e0 when the number of the plurality of air exhausters is n _e and the maximum air volume required for the entire ventilation and air conditioning equipment is 100%. _e0 = 100 / (n _e -1)% and the air flow rate changing means normally sets the air flow rate of each exhaust _fan to the normal air flow rate f _e1 of 100 / n _e % and the stop detecting means. When a stop state of any one of the plurality of air exhausters is detected, there is provided means for correspondingly changing the air volume of each air exhauster from the normal air volume f _e1 to the design rated air volume f _e0 . As a result, at normal times, the normal air flow rate f _e1 × n _e = 100%, and the maximum exhaust air flow rate required for the entire ventilation and air conditioning equipment is exhausted to 1
Design rated air flow f _e0 × (n _e -1) =
It becomes 100% and the maximum exhaust air volume required for the entire ventilation and air conditioning equipment can be continuously exhausted. That is, it is possible to realize a configuration that maintains the performance required for the entire apparatus in normal times even when one exhaust fan is stopped.

Further, it further has a plurality of supply duct air volume adjusting valves respectively installed in the supply ducts of the plurality of blowers, and the air volume changing means normally sets the opening of the supply duct air volume adjusting valve according to the normal air volume. When the stop detection means detects a partial stop state of the plurality of fans, the opening of the supply duct air volume adjusting valve is corresponding to the design rated air volume. By the means for setting the second supply opening larger than the first supply opening, it is possible to realize the means for changing the normal airflow at the normal time to the design rated airflow at the partial stop.

Further, each of the plurality of supply duct air volume adjusting valves includes an upstream supply duct air volume adjusting valve provided upstream of the blower in the supply duct and a downstream provided downstream of the blower in the supply duct. A side supply duct air volume adjusting valve, and the air volume changing means is a means for setting the upstream supply duct air volume adjusting valve and the downstream supply duct air volume adjusting valve to the first and second supply opening degrees, It is possible to reliably change the normal air flow rate during normal operation to the design rated air flow rate during a partial stop.

Further, it further has a plurality of exhaust duct air volume adjusting valves respectively installed in the exhaust ducts of a plurality of exhaust fans, and the air volume changing means normally sets the opening of the exhaust duct air volume adjusting valve to the normal air volume. According to this, when the stop detection means detects a part of the stopped states of the plurality of exhaust fans, the opening of the exhaust duct air flow control valve is set to the design rated air flow correspondingly. By the means for setting the second exhaust opening larger than the corresponding first exhaust opening, it is possible to realize a means for changing the normal airflow in the normal state to the design rated airflow in the partial stop.

Further, each of the plurality of exhaust duct air flow rate adjusting valves is provided in the exhaust duct upstream of the exhaust fan and upstream in the exhaust duct, and in the exhaust duct downstream of the air exhauster. And a downstream side exhaust duct air volume adjusting valve, and the air volume changing means is a means for setting the upstream side exhaust duct air volume adjusting valve and the downstream side exhaust duct air volume adjusting valve to the first and second exhaust opening degrees. As a result, it is possible to reliably change the normal air flow rate during normal operation to the design rated air flow rate during a partial stop.

Further, a plurality of filter means respectively provided on the upstream side of the exhaust fan in the exhaust duct, a plurality of connecting ducts for connecting the exhaust ducts between the filter means and the exhaust fan, and a plurality of connecting ducts. And a plurality of connecting duct air flow rate adjusting valves respectively provided on the connecting ducts, and each of the plurality of exhaust duct air flow rate adjusting valves is connected to the connecting duct on the downstream side of the filter means in the exhaust duct. An intermediate exhaust duct air flow control valve is provided on the upstream side of the connecting portion. This allows
Exhaust air can be exchanged between the exhaust ducts through the connecting duct provided between the filter means and the exhaust fan, so that the filter means and the exhaust fan can be stopped independently and independently. Regular inspections can also be performed. That is, for example, in the case where a regular inspection of one filter means is performed, closing the exhaust ducts before and after the filter means increases the air volume passing through the remaining filter means. Since the large air volume can be distributed to all the air exhausters including the air exhausters on the downstream side of the filter means being inspected, a normal air volume can be introduced to each air exhauster.
Therefore, at this time, it is not necessary to stop the exhaust fan, and it is possible to secure the ventilation air volume during normal operation.

Further, the air flow rate changing means sets the rotational speed of the blower to the first supply rotational speed according to the normal air flow during normal operation,
When the stop detection unit detects a partial stopped state of the plurality of blowers, the rotation number of the blower is set to the second supply rotation number higher than the first rotation number in response to the detection of the stop state. By the changing means, it is possible to realize a means for changing the normal air volume at the normal time to the design rated air volume at the time of partial stop.

The supply speed changing means is a planetary gear,
By using one of the fluid coupling and the thyristor to change the rotation speed of the blower, the first supply rotation speed at the normal time is changed to the second supply rotation speed at the partial stop. The means to do can be realized.

Further, the air volume changing means normally sets the rotation speed of the exhaust fan to the first exhaust rotation speed corresponding to the normal air volume,
When the stop detection means detects a partial stop state of the plurality of air exhausters, the number of rotations of the air exhausters is set to a second exhaust rotation speed that is higher than the first rotation speed in response to this. By using the rotation speed changing means, it is possible to realize a means for changing the normal air volume at the normal time to the design rated air volume at the time of partial stop.

Further, the exhaust speed changing means is a planetary gear,
By using one of the fluid coupling and the thyristor to change the rotation speed of the exhaust fan, the first exhaust rotation speed during normal operation can be changed to the second exhaust rotation speed during partial stop. Means of changing can be realized.

Further, the air volume changing means is an automatic control means for automatically changing the air volume of the blower / exhaust fan to the design rated air volume by using electrical / mechanical means, and accordingly, depending on the operation of the interlocking stopping means. It is possible to realize a means for changing the air volume of the blower / exhaust fan.

Further, the air volume changing means is a first means for giving a warning and an instruction for changing the air volume of the blower / exhaust fan to the ventilation / air conditioning equipment manager by manual control, and a warning and an instruction by the first means. According to the operation of the ventilation / air-conditioning equipment manager based on the above, by providing the second means for changing the air volume of the blower / exhaust air, the air volume of the blower / exhaust air is changed according to the operation of the interlocking stop means. realizable.

Further, in the present invention, each blower and each exhaust fan are normally operated at a normal air volume, that is, the normal air volume × the number of air blowers = the maximum air volume required for the entire ventilation and air conditioning equipment. It meets the required performance as a whole. Here, when one of the blowers is stopped due to a failure, or when it is stopped for a regular inspection, this is detected by the stop detection means, and the corresponding number (for example, one) is detected by the interlocking stop means. The operation of the blower is stopped in conjunction with it. This will reduce the occurrence of air volume imbalance between supply air volume and exhaust air volume due to the imbalance between the number of blowers and the number of exhaust fans that continue to operate, while operating the ventilation and air conditioning equipment promptly. A continuation can be implemented. At this time, the exhaust output of the blower is set to be larger than the suction output of the blower in order to maintain the negative pressure in the building, and the exhaust air volume of all blowers = the supply air volume of all blowers and the discharge of all blowers during normal operation. Even when operating under the condition that pressure> suction pressure of all blowers, the supply air volume fine adjustment means or exhaust air volume fine adjustment means operates with the air volume balance adjustment means, and the supply of all remaining blowers that are not stopped Fine adjustment is performed so that the air volume matches the exhaust air volume of all remaining non-exhaust fans.
As a result, even when a part of the blower / exhaust fan is stopped, it is possible to balance the air flow of the entire blower and the entire exhaust fan without causing a delicate air flow imbalance as in the conventional case.

Further, the apparatus further comprises a plurality of supply duct air volume adjusting valves installed in the supply ducts of a plurality of blowers, and the supply air volume fine adjusting means is means for finely adjusting the opening of the supply duct air volume adjusting valve. With this, it is possible to realize a means for finely adjusting the supply air volume of each blower.

Further, each of the plurality of supply duct air flow rate adjusting valves includes an upstream supply duct air flow rate adjusting valve provided in the supply duct upstream of the blower and a downstream side provided in the supply duct downstream of the blower. And a side supply duct air volume adjustment valve, and the supply air volume fine adjustment means,
By the means for finely adjusting the openings of the upstream supply duct air volume adjustment valve and the downstream supply duct air volume adjustment valve, the supply air volume of each blower can be surely finely adjusted.

Further, a plurality of exhaust duct air volume adjustment valves respectively installed in the exhaust ducts of the plurality of exhaust fans are provided, and the exhaust air volume fine adjustment means finely adjusts the opening degree of the exhaust duct air volume adjustment valves. Therefore, it is possible to realize a means for finely adjusting the exhaust air volume of each exhaust fan.

Further, each of the plurality of exhaust duct air flow rate adjusting valves is provided in the exhaust duct upstream of the exhaust fan and upstream in the exhaust duct, and in the exhaust duct downstream of the air exhauster. And a downstream side exhaust duct air volume adjustment valve, and the exhaust air volume fine adjustment means is
By the means for finely adjusting the openings of the upstream side exhaust duct air volume adjustment valve and the downstream side exhaust duct air volume adjustment valve, the exhaust air volume of each exhaust fan can be surely finely adjusted.

Further, since the supply air volume fine adjusting means is a means for finely adjusting the rotation speed of the blower, a means for finely adjusting the supply air volume of each blower can be realized.

Further, since the exhaust air volume fine adjustment means is a means for finely adjusting the rotation speed of the exhaust fan, a means for finely adjusting the exhaust air volume of each exhaust fan can be realized.

The air volume balance adjusting means is an automatic control means for operating at least one of the supply air volume fine adjusting means and the exhaust air volume fine adjusting means in response to the operation of the interlocking stopping means. It is possible to realize a means for operating the supply air volume fine adjustment means or the exhaust air volume fine adjustment means according to the operation of the interlocking stop means.

Further, the air volume balance adjusting means issues a warning and an instruction for operating at least one of the supply air volume fine adjusting means and the exhaust air volume fine adjusting means by manual control according to the operation of the interlocking stopping means. Second means for operating at least one of the supply air volume fine adjustment means and the exhaust air volume fine adjustment means according to the operation of the ventilation air conditioning equipment manager based on the warning and the instruction by the first means. It is possible to realize a configuration in which the supply air volume fine adjustment means or the exhaust air volume fine adjustment means is operated according to the operation of the interlocking stop means.

Further, at normal times, the supply air volume of each blower and the exhaust air volume of each exhaust fan are the normal air volume obtained by dividing the maximum air volume required for the entire ventilation and air conditioning equipment by the number of each blower and each exhaust fan. When a part of the plurality of blowers and blowers is detected by the stop detection means and the corresponding number of blowers and blowers are stopped by the interlocking stop means,
Further, there is an air volume changing means for changing at least one of the supply air volume of each of the remaining non-stop blowers and the exhaust air volume of each of the remaining non-stop air blowers to an air volume of a size different from the normal air volume, and, At least one of the plurality of blowers and exhaust fans is configured so that the design rated air volume of each unit is larger than the normal air volume, and the air volume changing means includes the supply air volume of each blower and the exhaust air volume of each exhaust fan. By maintaining at least one of the above from the normal air volume to the design rated air volume, maintain the air volume required for the ventilation and air conditioning equipment as a whole even when part of the blower / exhaust fan is stopped. You can

Further, in the present invention, when, for example, one blower is stopped, the total supply air volume by all the blowers is reduced by the number of stopped blowers, but each of the plurality of distribution supply duct air volume adjustment valves is controlled by the priority supply means. By adjusting the opening individually, this slightly reduced total supply air volume is distributed preferentially to at least one specific room in the building, so that all rooms in the building have the same proportion as before. Depending on the work environment required for each room without reducing the air volume (for example, to meet the ventilation demand air volume of the room specified in advance by the ventilation and air conditioning equipment manager)
The required air volume can be selectively supplied to maintain the room environment. That is, for example, it becomes possible to send the air volume from another room where the air volume maintenance is not strictly required to a specific room where the air volume maintenance is strictly required, and to prevent a decrease in the air volume of this particular room.

Further, the preferential supply means is an automatic control means for individually adjusting the opening of each of the plurality of distribution supply duct air flow rate adjusting valves according to the operation of the interlocking stop means, so that the interlocking stop means operates. Accordingly, it is possible to realize means for adjusting the opening degree of the distribution supply duct air flow rate adjusting valve.

Further, the priority supply means issues a warning and an instruction for individually adjusting the opening of each of the plurality of distribution supply duct air flow rate adjusting valves by manual control according to the operation of the interlocking stopping means. And a second means for individually adjusting the opening of each of the plurality of distribution supply duct air flow rate adjusting valves in accordance with the operation of the ventilation and air conditioning equipment manager based on the warning and the instruction by the first means. By including the means, it is possible to realize a configuration in which the opening degree of the distribution supply duct air flow rate adjusting valve is adjusted according to the operation of the interlocking stopping means.

Further, a plurality of distribution exhausts, which are respectively installed in a plurality of distribution exhaust ducts for collecting exhaust air volumes from the respective rooms in the building and leading to a plurality of exhaust fans, are capable of adjusting the exhaust air volume from each room. When the duct air flow control valve and the stop detection means detect a partial stopped state of a plurality of blowers and exhaust fans and the interlocking stop means stops the corresponding number of blowers and blowers, distribution by the priority supply means There is further provided priority exhaust means for individually adjusting the opening of each of the corresponding distribution exhaust duct air flow rate adjusting valves in accordance with the opening adjustment of the supply duct air flow rate adjusting valve. As a result, it is possible to realize a configuration in which the required air volume is selectively supplied according to the work environment and the like, and the air is exhausted accordingly.

Further, a plurality of transfer ducts provided so as to connect two adjacent rooms of the plurality of rooms provided in the building and transferring ventilation air from one of the two rooms to the other room. And a plurality of transfer duct air flow rate adjusting valves respectively provided in the plurality of transfer ducts, wherein the priority supply means has an opening of each distribution supply duct air flow rate adjusting valve and an opening of each transfer duct air flow rate adjusting valve. By the means for individually adjusting the above, it is possible to realize a configuration in which the required air volume is selectively supplied according to the work environment required for each room.

Further, the preferential exhaust means is an automatic control means for individually adjusting the respective openings of the plurality of distribution exhaust duct air flow rate adjusting valves in accordance with the adjustment by the preferential supply means, so that the interlocking stopping means can be operated. Accordingly, it is possible to realize a means for adjusting the opening degree of the distribution exhaust duct air volume adjustment valve.

Further, the preferential exhausting means issues a warning and an instruction for individually adjusting the respective openings of the plurality of distribution exhaust duct air flow rate adjusting valves by manual control according to the adjustment by the preferential supplying means. And a second means for individually adjusting the opening of each of the plurality of distribution exhaust duct air flow rate adjusting valves in accordance with the operation of the ventilation and air conditioning equipment manager based on the warning and the instruction by the first means. By including the means, it is possible to realize a configuration in which the opening degree of the distribution exhaust duct air flow rate adjusting valve is adjusted according to the operation of the interlocking stopping means.

Further, at normal times, the supply air volume of each blower and the exhaust air volume of each exhaust fan are the normal air volume obtained by dividing the maximum air volume required for the entire ventilation and air conditioning equipment by the number of each blower and each exhaust fan. When a part of the plurality of blowers and blowers is detected by the stop detection means and the corresponding number of blowers and blowers are stopped by the interlocking stop means,
Further, there is further provided an air volume changing means for changing at least one of the supply air volume of each of the remaining blowers that is not stopped and the exhaust air volume of each of the remaining exhaust fans that are not stopped to an air volume of a size different from the normal air volume, and At least one of the plurality of blowers and exhaust fans is configured so that the design rated air volume of each unit is larger than the normal air volume, and the air volume changing means includes the supply air volume of each blower and the exhaust air volume of each exhaust fan. It is a means for changing at least one of the above from the normal air volume to the design rated air volume. As a result, even when a part of the blower / exhaust fan is stopped, it is possible to maintain the air volume required for the ventilation / air conditioning equipment as a whole in normal times.

Further, the interlocking stop means is an automatic control means for automatically stopping the blower / exhaust machine using electrical / mechanical means in accordance with the detection result of the stop detection means. It is possible to realize means for interlocking the blower / exhaust fan according to the detection result.

Further, the interlocking stop means gives the ventilation / air conditioning equipment manager a warning and an instruction to stop the blower / exhaust fan by manual control according to the detection result of the stop detecting means.
And the second means for stopping the blower / exhaust fan according to the operation of the ventilation / air-conditioning facility manager based on the warning and instruction by the first means, thereby responding to the detection result of the stop detection means. It is possible to realize a configuration in which the blower and the exhaust fan are stopped in conjunction with each other.

Further, by further having stop instruction means for selectively stopping each blower and each exhaust fan manually, one blower is stopped by the stop instruction means at the time of periodic inspection of the blower (or the exhaust fan). (Or the exhaust fan) may be stopped. Then, the stop detection means detects this, and the interlocking stop means stops the corresponding exhaust fan (or blower).
Further, the air volume of the blower (or the exhaust fan) is changed to the design rated air volume by the air volume changing means. Therefore, by repeating this procedure one by one, it is possible to smoothly perform the periodic inspection while maintaining the performance of the entire ventilation and air conditioning equipment.

Further, when one of the one blower and the exhaust fan is stopped by the stop instructing means and the stop detecting means detects the stop due to the failure of the other blower and the exhaust fan, the stop instructing means If the blower / exhaust blower is in operation and the blower / exhaust blower malfunctions, the ventilation / air-conditioning equipment can be operated by further having a start-up / recovery means for starting one of the blower / exhaust blower that was stopped by the instruction You can continue.

Further, the detection signal from the stop detecting means is inputted, and when the stop detecting means detects the stop of a predetermined number or more of the plurality of blowers and exhaust fans, it further has a low air volume warning means. It is possible to inform the ventilation and air conditioning equipment manager that it is difficult to maintain a predetermined function because the air volume decreases.

[0086]

Embodiments of the present invention will be described below with reference to FIGS. A first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a conceptual diagram showing a system outline of the ventilation air conditioning equipment 100 according to this embodiment. In FIG. 1, the ventilation and air-conditioning equipment 100 performs power generation operation and operation for maintaining safety during rated output operation of a nuclear power plant, and maintains environment of workers during periodic inspection of the nuclear power plant. The operation of the power plant is required, and it is operated throughout the year regardless of the operating condition of the power plant. That is, the outside air taken into the air supply treatment device 1 is filtered for impurities such as dust by the filter 2 in the air supply treatment device 1 and heated by a heating means (not shown) or the temperature is adjusted by the cooling coil 3. After being carried out, each room 6a, 6b in the building 6 of the nuclear power plant is supplied by the three blowers 4a, 4b, 4c via the supply duct 5.
6c is supplied. The air supplied to each room 6a, 6b, 6c is introduced into the three exhaust treatment devices 8a, 8b, 8c by the exhaust duct 7 after removing heat or diluting each room, and the exhaust treatment device 8a, Filter 11 in 8b and 8c
After impurities such as dust are filtered by a, 11b, and 11c, they are pushed out by the three air exhausters 9a, 9b, and 9c, and are discharged to the outside from the exhaust pipe 10 through the exhaust duct 7.

Supply air amount adjusting dampers 15a to 15c are provided on the upstream side of the blowers 4a to 4c of the supply duct 5, and the opening degree of each of them is adjusted by the supply air amount adjusting damper controller 25.
Adjusted by Further, the exhaust air flow rate adjusting damper 1 is provided on the exhaust duct 7 upstream of the exhaust treatment devices 8a to 8c, respectively.
9a to 9c are provided, and their openings are adjusted by the exhaust air flow rate adjustment damper control device 27. Further, opening / closing dampers 16a to 16c are provided on the downstream side of the blowers 4a to 4c of the supply duct 5, respectively, and when the blower control device 22 (described later) detects a stopped state of the blowers 4a to 4c, the operation control device 30 is provided. The opening / closing damper control device 33, which is controlled by a control signal (described later), closes the supply duct 5. Further, the opening / closing dampers 20a ...
c is provided, and the blower 9 is controlled by the blower control device 24 (described later).
When the stop states of a to c are detected, the operation control device 30
Open / close damper control device 3 controlled by a control signal (described later)
It is configured to shut off the exhaust duct 7 by closing each at 4. Further, in the supply duct 5, the total amount of air supplied by all the blowers 4a to 4c is calculated in each room 6a to 6c in the building 6.
Distribution supply ducts 5Aa, 5Ab, 5Ac that are distributed and guided to c
In the vicinity of the ventilation supply port of the distribution supply duct air amount adjustment dampers 17a to 17c for adjusting the amount of air supplied to the rooms 6a to 6c.
c is provided. Also, of the exhaust duct 7, the building 6
In the vicinity of the ventilation outlets of the distribution exhaust ducts 7Aa, 7Ab, 7Ac that collect the exhaust air volumes from the respective rooms 6a to 6c and guide them to the total exhausters 9a to 9c, the exhaust air volumes from the respective rooms 6a to 6c are adjusted. Distribution exhaust duct air volume adjustment dampers 18a to 18c are provided. The air volume adjusting means (not shown) adjusts the openings of the distribution supply duct air volume adjustment dampers 17a to 17c and the distribution exhaust duct air volume adjustment dampers 18a to 18c so that the air volume satisfying the requirements of each room is distributed. Has been done. Each of the blowers 4a, 4b, 4c has a fixed rotation speed, and each of them is turned on by the blower control device 22.
Controlled off. The blowers 9a, 9b, and 9c also have a fixed number of revolutions, and each of them is on / off controlled by the blower controller 24. These blowers 4a,
The b and c and the air exhausters 9a, b and c are configured so that three units are connected in parallel and a combined operation is performed. The blower control device 22 and the blower control device 24 respectively include the blowers 4a to 4a.
It also functions as a stop detection unit that detects that the c and the air exhausters 9a to 9c are in the stopped state, and outputs a detection signal indicating whether or not the stopped state to the operation control device 30.

The characteristics of the blowers 4a to 4c and the blowers 9 to c will be described in detail below. FIG. 2 shows the air volume-pressure characteristic curves of the blowers 4a to 4c and the exhaust fans 9 to c. In FIG. 2, the blowers 4a to 4c and the blowers 9a to 9c have the same characteristics, and the characteristic curves are common. That is, the curve 101c is in operation when one blower 4 (or the exhaust fan 9) is operating, and the curve 101c is in operation when two blowers 4 (or the exhaust fan 9) are operating.
b, curve 1 when three blowers 4 (or blowers 9) are in operation
01a. The intersection of these characteristic curves 101a to 101c and the resistance curve 102 due to the flow resistance of the supply duct 5 (or the exhaust duct 7) or the like is the blower 4 (or the blower 9).
Is the operating point for each operating number. That is, the ventilation air conditioning equipment operates at the operating point 103a (supply air volume Q1) when operating three units, and the operating point 103b when operating two units with one unit stopped.
(Supply air volume Q2). Further, when one unit is operating, it is operated at the operating point 103c.

Here, in general, the system required capacity of the ventilation and air-conditioning equipment of a nuclear power plant is determined by the sum of the air volumes required for each room to maintain the environment. The required air volume for each room is the air volume for maintaining the indoor temperature at a predetermined condition for heat generation and heat radiation in the room, and the air in each room where there is a possibility of radioactive material contamination peculiar to a nuclear power plant. The air volume required for the room is the larger of the air volume for diluting to the concentration level of. As for the above, a large value is generated during the rated output operation of the power plant because heat is generated from many reactor auxiliary equipment required for operation, whereas for example, during auxiliary inspection, each auxiliary equipment stops and heat is generated. Is reduced, resulting in a small value. One of them remains unchanged regardless of the operating conditions of the power plant, but its value is smaller than that during the rated output operation of the power plant. Therefore, the required maximum air volume in each room is at the rated output operation of the power plant. The blowers 4a to 4c each have a design rated air flow rate f _i0 = 50 when the air flow rate during the power generation predetermined rated output operation, which is the required maximum air flow rate, is 100%.
The exhaust fans 9a to 9c are similarly configured to have a design rated air flow rate f _e0 = 50%.

Returning to FIG. 1, the operation of the supply air volume adjustment damper control device 25, the exhaust air volume adjustment damper control device 27, the blower control device 22 and the exhaust air control device 24 are controlled by the operation control device 30, respectively. The function of the operation control device 30 will be described in detail below.

An example of the operation sequence provided in the operation control device 30 will be described with reference to FIG. During normal operation (that is, when the blowers 4a to 4c and the exhaust fans 9a to 9c are all operating and the power generation is at a predetermined rated output), the operation control device 30
Is a supply air volume adjustment damper control device 25 so that the air volume of each of the blowers 4a to 4c becomes about 33% when the required maximum air volume in each of the rooms 6a to 6c is 100%.
And a supply air volume adjustment damper control device 2 according to this
5 is a blower 4a-c upstream air supply amount adjustment damper 15a
The opening degree of ~ c is adjusted. As mentioned above, each blower 4
Since the design rated air flow rate f _{i0 of ac is} 50%, this means that the air flow rate of each blower is suppressed. Further, the air volume of each of the air exhausters 9a to 9c is about 33
Exhaust air volume adjustment damper control device 2 so that it becomes a percentage
The opening degree of the exhaust air volume adjustment dampers 19a to 19c is adjusted via 7. As a result, 33% × 3≈100% is obtained, and even during the rated output operation of the power plant, the required air volume is supplied into the building 6 and the air volume capable of discharging ventilation air to the outside is secured.

From this state, for example, when the blower 4a is stopped due to a failure or the like, and this stop state is detected by the blower control device 22, the operation control device 30 causes the open / close damper as shown in FIG. A closing control signal is output to the control device 33 to close the opening / closing damper 16a, and an opening increase control signal is sent to the supply air volume adjustment damper control device 25 to supply the supply air volume adjustment damper 15b, 4b, 4c on the upstream side.
The opening of 15c is increased, and the supply air volume by the blowers 4b and 4c is changed to the design rated air volume f _i0 (= 50%).
Change to As a result, even if the blower 4a stops, the two blowers 4b and 4c that are not stopped have a ratio of 50% × 2 = 100%. The operation control device 3
AND logic element 7 in the logic circuit of FIG.
For 0, a commercially available element may be selected and used depending on whether the control means is electrically or mechanically performed.

Although the above description has been given by taking the operation sequence relating to the change of the air volume when the blowers 4b and 4c are in the operating state and the blower 4a is stopped, when the blowers 4a and 4c are in the operating state and the blower 4b is stopped, Blowers 4a, 4b
Although not particularly shown, the case where the blower 4c is stopped in the operating state is not shown, but the open / close dampers 16a to 16a ...
operation sequence c closing control signals and opening increase control signal supplied air amount adjusting damper 15a~c of changes to the design rated airflow f _i0 supply air volume of the blower 4a~c is transmitted, provided in the operation controller 30 ing. In addition, the blower 9a-
In response to the detection of the stopped state of one of the three air blowers 9c to c by the air blower control device 24, the open / close dampers 20a to 20c on the downstream side of the three air blowers 9a to 9c that are stopped in the same manner as above.
And a control signal for increasing the opening degree of the exhaust air amount adjusting dampers 19a to 19c on the upstream side of the three air exhaust devices 9a to 9c that are not stopped are transmitted, and the exhaust air amounts of the air exhaust devices 9a to 9c are changed. An operation sequence for changing the design rated air flow rate f _e0 (= 50%) is provided in the operation control device 30.

By the operation sequence as described above, the operation combination as shown in FIG. 4 is finally realized. That is, during normal operation, the three blowers 4a to 4c are each operated at an air volume of 33%, and the three air exhausters 9a to 9c are each operated at an air volume of 33%. When one blower is stopped due to a failure or the like, the remaining two blowers are operated at an air volume of 50%, and when one blower is stopped due to a failure or the like, the remaining two blowers are similarly discharged. Each fan operates at 50% airflow. In addition, in FIG. 4, the exhaust treatment devices 8a to 8c operated together with the exhaust fans 9a to 9c.
Is also shown.

Next, the function and effect of this embodiment will be described. As a comparative example of this embodiment, the ventilation air conditioning equipment 1 according to the conventional technique is used.
50 will be described with reference to FIG. A conceptual diagram showing a system outline of the ventilation air conditioning equipment 150 is shown in FIG. The same members as those of the ventilation air conditioning equipment of this embodiment shown in FIG. 1 are designated by the same reference numerals. In FIG. 5, the ventilation air conditioning equipment 150 is different from the ventilation air conditioning equipment 100 of the present embodiment mainly in that four blowers 4a to 4d each having a design rated air volume f _i0 = 33% are provided, and each design is performed. Four blowers 9a to 9d having a rated air flow rate f _e0 = 33% are provided; by using one blower and one blower among the blowers 4a to d and the blowers 9a to 9d as a standby unit, Redundancy is provided for the required air volume in the entire equipment, and preparations are made for stoppage due to the occurrence of a failure or for periodic inspection of the ventilation and air conditioning equipment itself; and correspondingly, the exhaust treatment devices 8a to 8d and the filter 11a. 4 to 4 are also provided to protect the workers from being exposed to radiation during inspection; the supply air volume adjustment damper control device 25 and the exhaust air volume adjustment damper control device 27 are the operation control device 13 Without receiving a control signal from, the amount of own supply air control damper 15a~d and exhaust air volume control damper 20
adjusting a to d; supply duct 5 and exhaust duct 7
Is not opened / closed by the open / close dampers 16a to 16c controlled by the open / close damper control devices 33, 34, but is provided with a mechanism that automatically closes by the weight of the weight attached to the blade of the valve when the air volume decreases, It is to be opened / closed by the gravity dampers 116a-d and 120a-d that open and close depending on the air volume.

An example of the operation sequence provided in the operation control device 130 having the above configuration will be described with reference to FIG. Figure 6
FIG. 4 is a diagram corresponding to FIG. 3 of the first embodiment. During normal operation (at rated output of the power plant), one blower (for example, 4d) is stopped as a standby unit, and three blowers other than this standby unit (for example, 4a to 4c) are operated and required. The air volume is supplied to each of the rooms 6a to 6c in the building 6. Similarly, regarding the air exhausters, in normal times (at the time of rated output of the power plant), one air exhaust device (for example, 9d) is stopped as a standby device, and three other air exhaust devices (for example, 9a-
c) is operated, and the required air volume is released to the outside.

When the blower 4a is stopped due to a failure or the like from such a state and this stop state is detected by the blower control device 22, first, the gravity damper 116a of the supply duct 5 according to the decrease in the air volume. After that, the operation control device 130 outputs a start control signal to the blower control device 22 as shown in FIG. Then, the gravity damper 116d of the supply duct 5 is opened according to the increase in the air volume. As a result, even if the blower 4a stops, the three fans, the blowers 4b and 4c that are not stopped and the blower 4d that is newly activated, have a capacity of 33% x 3 ≈ 100%, which is required for each room when operating the rated output of the power plant. Secure the air volume.

The above description has been given by taking the operation sequence when the blowers 4b and 4c are in the operating state, the blower 4d is in the standby state and the blower 4a is stopped, as an example.
d is in an operating state and the blower 4a is in a standby standby state.
Although not shown in particular, even when b is stopped,
The operation control device 130 is provided with an operation sequence in which start-up control signals of the blowers 4a to 4d, which are the standby machines, are transmitted similarly to the above. Further, similarly to the above, when the stop state of one of the air exhausters 9a to 9d is detected by the air exhaust control device 24, the operation sequence in which the activation control signal of the standby device is transmitted is set in the operation control device 30. It is equipped.

By the operation sequence as described above, the operation combination as shown in FIG. 7 is finally realized. That is, during normal operation, all of the blowers 4a to 4d other than the standby unit have an air volume of about 33.
Percentage of the four air exhausters 9a to 9d other than the standby units are operated at an air flow rate of about 33%. When one blower stops due to a failure, etc., the blower that was a standby unit starts up and the air volume is about 3
When operating at 3% and one exhaust fan stops due to a failure or the like, the exhaust fan that has also been a standby machine is activated and operates at an air volume of about 33%. Note that FIG.
The exhaust treatment device 8 operated together with the air exhausters 9a to 9d.
Also, a to d are shown together.

In the above, in the conventional ventilation and air conditioning equipment 150 having the above-mentioned structure, the blower 4 and the exhaust fan 9 which are originally necessary
A spare machine will be added to the number of vehicles (3 each). However, the blowers 4a to d, the exhaust fans 9a to 9d, and the exhaust treatment device 8
Since the equipment sizes a to d and the dimensions of the ducts 5 and 7 to be connected are large, the equipment disposition property in the room in which these are installed is deteriorated, the room volume is increased, and a large restriction is given to the building design. In addition, the amount of parts to be checked / replaced during maintenance / inspection increases and the amount of maintenance / inspection work associated therewith also increases, deteriorating equipment maintainability.

On the other hand, the ventilation and air conditioning equipment 10 of the present embodiment.
At 0, the blowers 4a to 4c (or the blowers 9a to 9c)
When one of them stops, the supply air volume of each of the remaining blowers 4 (or each exhaust fan 9) not stopped by the operation control device 30 having the air volume changing function is 50% of the design rated air volume f _i0 ( Or f _e0 ) to cover this decrease in air volume of one unit, and design rated air volume 50% x 2 units = 10 of the maximum air volume required for the entire ventilation and air conditioning equipment.
Can be maintained at 0 percent. At this time, since it is not necessary to provide a spare unit as in the conventional case, the blower 4, the blower 9, and the ducts 5, 7 connected to them are
The number of exhaust treatment devices 8 and the like can be reduced, the restrictions on the layout of the nuclear power plant inside the building and the restrictions on the building design can be alleviated, and the equipment layout can be improved. In addition, the amount of checking / replacement parts can be reduced to reduce the amount of maintenance and inspection work and improve the maintainability of the equipment.

In the above embodiment, the operation control device 30 automatically operates the other two blowers 4 (or the blower 9) in response to the stop of one of the blowers 4 (or the blower 9). ) Was changed to the design rated air flow f _i0 (or f _e0 ), but it is not limited to this. That is, when the blower control device 22 (or the blower control device 24) detects the stop of one of the blowers 4 (or the blower 9), the operation control device 30 is, for example, in the central control room of the nuclear power plant. A ventilation / air conditioning facility manager is given a warning / instruction for stopping the air volume of the blower 4 (or the exhaust fan 9) by manual control via a driving support system having a function of transmitting to a control panel (not shown). The ventilation / air-conditioning equipment administrator may perform an operation in response to this warning / instruction, and the operation control device 30 may change the air volume of the blower 4 (or the exhaust fan 9) in accordance with this operation.

Further, in the above embodiment, the operation control device 30 sets the air volume of both the blower 4 and the exhaust fan 9 to 50.
Although it has a function of changing the design rated air flow rate f _i0 and f _e0 in percentage, only one of them may be used. That is, for example, as shown in FIG. 8, only the air exhausters 9a to 9c have a design rated air flow rate f _e0 = about 33% of the normal air flow rate.
Is changed to 50%, blower 4a~c always may be configured to be operated at the design rated airflow f _i0 ≒ 33 percent. In this case, when one of the blowers 4a to 4c is stopped, the remaining two blowers are 33 × 2 = 66.
%, The exhaust fan becomes 33 × 3 = 100%, and the exhaust air volume by the entire exhaust fan becomes larger, and the intake intake ventilation system is implemented. At this time, the ventilation air volume in the normal state can be maintained while maintaining the negative pressure with respect to the outside air in each room. Further, for example, in the case of ventilating air conditioning equipment without radioactive contamination of nuclear power plant it is not required negative pressure maintaining against outside air room, as opposed to FIG. 8, the rated air volume f _i0 = 50 percent only blower 4a~c With this configuration, when one of the air exhausters 9 is stopped, the normal ventilation air volume is maintained by the intake air ventilation method.

A second embodiment of the present invention will be described with reference to FIGS. 9 and 10. The present embodiment is an embodiment in which the operation control device has an air volume changing function having a different configuration. First
The same reference numerals are given to the same members as those in the embodiment. FIG. 9 is a conceptual diagram showing a system outline of the ventilation and air conditioning equipment 200 according to this embodiment. In FIG. 9, the ventilation air conditioning equipment 20 of this embodiment is shown.
0 is different from the ventilation air conditioning equipment 100 of the first embodiment,
The air flow rate changing function of the operation control device 230 is not performed by adjusting the opening degree of the supply air flow rate adjustment dampers 15a to 15c or the exhaust air flow rate adjustment dampers 19a to 19c. It is done by adjustment. That is, the blowers 4a to 4c and the exhaust fans 9a to 9c
Is a variable-speed blower and a variable-speed blower whose rotation speed is variable, the content of the operation sequence relating to the air volume changing function provided in the operation control device 230 changes, and the supply air volume adjustment damper control device 25 and the exhaust air amount adjustment damper control device 27 do not receive the control signal from the operation control device 230 and independently control the supply air amount adjustment dampers 15a to 15c and the exhaust air amount adjustment dampers 19a to 19c.

An example of an operation sequence relating to the air volume changing function provided in the operation control device 230 will be described with reference to FIG. FIG. 10 is a diagram corresponding to FIG. 3 in the first embodiment. During normal operation (that is, when the blowers 4a to 4c and the exhaust fans 9a to 9c are all operating and the power generation is at a predetermined rated output)
In the above, the operation control device 230 controls the blower control device 22 so that the air flow rates of the blowers 4a to 4c are about 33% when the required maximum air flow rate in each of the rooms 6a to 6c is 100%. As described above, the design rated air flow rate f _i0 of each of the blowers 4a to 50 is 50%, which means that the air flow rate of each blower is suppressed. Further, the blower control device 24 is controlled so that the air volumes of the blowers 9a to 9c are also about 33%. As a result, 33% × 3≈100% is obtained, and even during the rated output operation of the power plant, a required 100% air volume that can supply the required air volume to the building 6 and discharge the ventilation air to the outside is secured. ing.

From this state, for example, when the blower 4a is stopped due to a failure or the like, and this stop state is detected by the blower control device 22, the operation control device 230 causes the open / close damper as shown in FIG. A closing control signal is output to the control device 33 to close the opening / closing damper 16a, and a rotation speed increase control signal is transmitted to the blower control device 22 to increase the rotation speed of the blowers 4b and 4c so that the blowers 4b and 4c supply the power. The air volume is changed to the design rated air volume f _i0 (= 50%) described above. As a result, even if the blower 4a is stopped, the air volume of 50% × 2 = 100% can be secured by the two blowers 4b and 4c that are not stopped. Here, as the AND logic element 70 in the logic circuit of FIG. 10 provided in the operation control device 230, a commercially available element may be selected and used depending on whether the control means is electrically or mechanically performed. good.

The other structure is almost the same as that of the first embodiment.

The above description has been given by taking the operation sequence when the blowers 4b and 4c are operating and the blower 4a is stopped as an example. However, when the blowers 4a and 4c are operating and the blower 4b is stopped, Even when the blower 4c is stopped in the operating state, although not particularly shown,
Similarly to the above, the closing control signals of the opening / closing dampers 16a to 16c and the rotation speed increasing control signal of the blower are transmitted to the blowers 4a to 4c.
The operation control device 230 is provided with an operation sequence for changing the supply air volume of the above to the design rated air volume f _i0 . In addition, when one of the exhaust fans 9a to 9c is in a stopped state, the exhaust controller 2
In the same manner as described above, the closing control signal of the downstream side opening / closing dampers 20a to 20c and the three air blowers 9a to 9c are detected in the same manner as above. Among them, the rotation speed increase control signal of the one which is not stopped is transmitted and the operation sequence for changing to the design rated air volume f _e0 (= 50%) of the air exhausters 9a to 9c is the operation control device 230.
It is provided inside.

With the above operation sequence, finally, the same combination of operations as shown in FIG. 4 is realized as in the first embodiment.

As the device for controlling the rotation speed of the blower control devices 22, 24 or the variable speed blower / exhaust fan, it is conceivable to use a device composed of a planetary gear, a fluid coupling or a thyristor (inverter). ,
With these, the rotation speed control can be easily performed.

Also in this embodiment, the same effect as that of the first embodiment can be obtained.

A third embodiment of the present invention will be described with reference to FIGS. This embodiment is an embodiment mainly focused on adjusting the air volume balance of the remaining blowers and exhaust fans when a part of the blowers and exhaust fans is stopped.
The same members as those in the first and second embodiments are designated by the same reference numerals.

FIG. 11 is a conceptual diagram showing an outline of the system of the ventilation air conditioning equipment 300 according to this embodiment.

In FIG. 11, the ventilation air conditioning equipment 300 of this embodiment is the ventilation air conditioning equipment 10 of the first embodiment shown in FIG.
The main difference from 0 is that the design rated air volumes of the three blowers 4a to 4d and the exhaust fans 9a to 9d are f _i0 ≈33% and f _e0 ≈33%, respectively. The discharge pressure of the blower 9 is set to be higher than the pressure of the blower 4 in order to maintain the negative pressure in the rooms 6a to 6c, and the function of the operation control device 330 (that is, the sequence content).

The characteristics of the blower 4 and the blower 9 are shown in FIG. FIG. 12 shows the air volume-pressure characteristic curves of the blowers 4a to 4c and the exhaust fans 9a to 9c. In FIG. 12, as described above, the characteristics of the blowers 4a to 4c and the characteristics of the blowers 9a to 9c are different from each other, and the characteristic curves are different curves. That is, when one blower is operating, the curve 107c, the blower 2
Curve 107b when the machine is operating, and curve 1 when the machine is operating
It becomes 07a. The intersection of these characteristic curves 107a to 107c and the resistance curve 108 due to the flow resistance of the supply duct 5 and the like becomes the operating point for each operating number of the blowers 4, and is operated at the operating point 110a and the supply air volume Q1s when operating three units. The operation is performed at the operating point 110b and the supply air volume Q2s when operating two vehicles, and at the operating point 110c when operating one vehicle. On the other hand, a curve 105c is obtained when one fan is operating, a curve 105b is shown when two fans are operating, and a curve 105a is shown when three fans are operating. And these characteristic curves 105a
~ C and the resistance curve 10 due to the flow resistance of the exhaust duct 7 etc.
The intersection with 6 is the operating point for each operating number of the air exhausters 9 and the operating point 109a and the exhaust air volume Q1h when operating three units.
The operating point is 109b and the supply air volume is Q2h when operating two units, and the operating point is 109c when operating one unit.
Be driven in.

The function of the operation control device 330 will be described in detail below. As already mentioned in the first embodiment,
Generally, the required air volume of each of the rooms 6a to 6c in the building 6 is the air volume for maintaining the indoor temperature at a predetermined condition for heat generation and heat radiation in the room, and the possibility of radioactive material contamination peculiar to a nuclear power plant. Of the air volumes for diluting the air in each room to a predetermined concentration level, the larger one is the required air volume for the room. As for the above, a large value is generated during the rated output operation of the power plant due to the heat generated from many reactor auxiliary equipment required for operation, whereas, for example, during auxiliary inspection, each auxiliary equipment stops and heat is generated. Is reduced, resulting in an extremely small value. One is unchanged regardless of the operating conditions of the power plant, but its size is slightly larger than that at the time of regular inspection. Therefore, with respect to the required air volume required at the rated output operation of the power plant,
Since the required air volume required during the periodic inspection of the power plant is extremely small, for example, during the periodic inspection of the power plant,
Even if only one blower (or one exhaust fan) is stopped and only two blowers (or two exhaust fans) are operated, it is possible to secure the necessary capacity for the ventilation and air conditioning equipment as a whole. Become. That is, in FIG. 2 described above, if the supply air volume Q1 when three units are in operation is equal to the air volume when the power generation predetermined rated output operation is performed, and the supply air volume is Q2 when two units are operating, then at least the power plant At the time of regular inspection, one of the three blowers 4a to 4c and three blowers 9a to
Since one of c is redundant, a spare machine for failure occurrence is unnecessary, and, for example, it is shown that periodical inspection of the ventilation and air conditioning equipment itself can be performed.

As described above, at the time of periodic inspection of the nuclear power plant, it is not necessary to provide a spare machine or increase the supply air volume of the blower 4 or the exhaust air volume of the exhaust fan 9 as in the first embodiment. Also, it is possible to deal with failure occurrence and periodic inspection of ventilation and air conditioning equipment. However, generally, in the regular ventilation air conditioning equipment of a nuclear power plant, the pressure of each room in the nuclear power plant is set to be a negative pressure with respect to the outside air in order to prevent leakage of contaminated air, and all the blowers when operating three units In many cases, the supply air volume Q1s of No. 4 and the exhaust air volume Q1h of the total exhauster 9 are matched (see the above description using FIG. 2). Therefore, if the number of blowers 4 and the number of blowers 9 that are in operation differ due to a breakdown or a stop due to a periodic inspection, the supplied air volume and the exhaust air volume greatly differ, and a large imbalance in the air volume occurs, which is preferable. Absent. In order to respond to this, the operation control device 330 has a first function of interlocking stop function of the blower and the blower. First, this function will be described in detail below.

(1) Interlocking Stop Function FIG. 13 shows an example of the operation sequence relating to the interlocking stop function provided in the operation control device 330. In FIG. 13, when the blower control device 22 detects the stop state of one of the blowers 4a to 4c, the operation control device 330 indicates that the stop state of the blower 9a is the blower control device 24.
Is not detected (= when the blower 9a is in the operating state), the blower 9a operation stop signal is output to the blower controller 24, and the stop state of the blower 9a indicates that the blower 9a is not operating. 24 (= when the exhaust fan 9a is in a stopped state), an exhaust fan 9b operation stop signal is output to the exhaust fan control device 24, and the stop condition of the exhaust fan 9b is detected by the exhaust fan control device. When it is detected by 24 (= when the exhaust fan 9b is in a stopped state), the exhaust fan 9c operation stop signal is output to the exhaust fan control device 24. That is,
The operation control device 30 interlocks the non-stopped blowers 9a to 9c in the order of the blowers 9a, 9b, and 9c in response to the stop of one blower 4a to 4c. Then, any one of the three exhaust fans 9a to 9c is finally stopped. The open / close damper 16a-
The closing control signals c and 19a to 19c are omitted because they are complicated, but in reality, the closing control signals are closed so that the respective opening / closing dampers are closed according to the stop of the corresponding blower / exhaust fan. Is being output. Here, the AND logic element 70 and the NOT logic element 74 in the logic circuit of FIG. 13 provided in the operation control device 30 are commercially available elements depending on whether the control means is electrically or mechanically performed. You can select and use it.

Although not shown in the drawing, in the operation control device 30, the exhaust fan control device 24 detects that one of the exhaust fans 9a to 9c is stopped, contrary to FIG. Accordingly, an operation sequence for performing control for stopping the non-stopped blowers 4a to 4c among the three blowers 4a to 4c in the order of the blowers 4a, 4b, 4c is provided in the reverse order of FIG.

By the above two sequences, a combination of operations as shown in FIG. 14 is realized. That is, during normal operation, the three blowers 4a to 4c and 3 are used.
When one blower 9a-c is operating, but one blower stops due to a failure or the like, one blower stops correspondingly, or one blower fails or the like. If it stops due to, one blower will also stop, so
After all, in either case, the operation is performed by two blowers and two exhaust fans.

As a result, even when one unit is stopped by the operation control device 330, the number of operating blowers 4 and the number of operating exhaust fans 9 are stopped so as to match each other. Can be prevented.

Considering the above-mentioned air volume balance in more detail, as described above, in the ventilation and air conditioning equipment 300 of this embodiment, the characteristics of the exhaust fans 9 and the blowers 4 are different, and three blowers are used. 4a-c total supply air volume Q1s = 3 exhaust fans 9a-c total exhaust air volume Q1h
However, it is 2 when 2 units are operating when 1 unit is stopped.
The supply air flow rate Q2s of the four blowers 4 becomes smaller than the exhaust air flow rate Q2h of the two air exhausters 9, resulting in a slight air volume imbalance.
In order to deal with this, the operation control device 330 has a second function, that is, a function of finely adjusting the air flow rates of the blower 4 and the exhaust fan 9. This function will be described in detail below.

(2) Air Volume Fine Adjustment Function An example of the operation sequence relating to the air volume fine adjustment function provided in the operation control device 330 will be described with reference to FIG. During normal operation (that is, the blowers 4a to 4c and the blowers 9a to 9c)
15), the ventilation / air-conditioning equipment manager or the like manually inputs an instruction to stop the blower 4a from an input means (not shown) for the purpose of periodical inspection of the ventilation / air-conditioning equipment. As shown in, the operation control device 330 outputs an operation stop signal to the blower control device 22 to stop the blower 4a, and outputs a closing control signal to the open / close damper control device 33 to close the open / close damper 16a. Further, an operation stop signal is output to the exhaust fan control device 24 to stop the exhaust fan 9a, and the opening / closing damper control device 3
A closing control signal is output to 4 to close the opening / closing damper 20a. Then, an opening degree fine adjustment signal is transmitted to the supply air volume adjustment damper control device 25 and an opening degree fine adjustment signal is transmitted to the exhaust air volume adjustment damper control device 27, whereby the remaining blowers 4b, 4c that continue operation. The opening degree of the upstream air supply amount adjusting dampers 15b, 15c and the exhaust air amount adjusting dampers 19b, 19c on the upstream side are finely adjusted to supply the air quantity Q2s by the two blowers 4b, 4c.
And the exhaust air volume Q2h by the two air exhausters 9b and 9c are made to match.

Although the above description has been made by taking the case where the blower 4a is stopped as an example, the present invention is not limited to this, and one of the other blowers 4b or 4c or one of the blowers 9a to 9c can be manually selected. The same control is performed when the air flow is stopped, and the air volume balance is finely adjusted.

By the above, the blowers 4a to 4c and the blower 9
Even when a part of a to c is stopped, it is possible to balance the air volume of the rest of the blower 4 and the entire blower 9 without causing a subtle air volume imbalance.

Here, at the time of periodic inspection of the power plant, etc., as described above, for example, one blower 4 (or one exhaust fan 9) is stopped and two blowers 4 (or two blowers 4). Even if it is operated only by the exhaust fan 9), it becomes possible to secure the necessary capacity as the entire ventilation and air conditioning equipment. However, in this way, one blower 4 (or one blower 9)
If one of the remaining two units further stops due to a failure or the like while the air conditioning is stopped, it is no longer possible to secure the necessary capacity as the entire ventilation and air conditioning equipment. The operation control device 330 has an air volume decrease warning function as a third function so as to cope with such a situation. This function will be described in detail below.

(3) Air Volume Decrease Warning Function An example of the operation sequence relating to the air volume decrease warning function provided in the operation control device 330 will be described with reference to FIG.
For example, blower 4 for the occurrence of failure or for periodic inspection
When the blower 4a of the three units a to c is stopped (at this time, the blower 9a is also stopped due to the interlocking stop function at this time), the blower 4 of the blowers 4b and 4c in operation is stopped.
When the blower controller 22 detects that b has stopped due to a failure, the operation controller 330 outputs an operation stop signal to the blower controller 24 based on the interlocking stop function, as shown in FIG. Then, the blower 9b is stopped, and an air volume reduction warning signal due to the stop of the two blowers 9a, 9b is issued to a display means or the like (not shown). The closing control signals for the opening / closing dampers 16a to 16c and 19a to 19c are omitted because they are complicated, but in reality, each opening / closing damper is closed according to the stop of the corresponding blower / exhaust fan. The closing control signal is output so that

In addition, the blower 4a is operated while the blower 4a is stopped.
Although the description has been given by taking the case where b is stopped due to failure as an example, the invention is not limited to this, and other blowers 4b and 4c or the blower 9 can be used.
The same control is performed when the other one fails and stops during the stop of ac, and the air volume decrease warning signal is issued.

As a result, if one blower / exhaust blower is stopped while another blower / exhaust blower is stopped, it is difficult to maintain a predetermined function because the air volume decreases. Ventilation and air conditioning equipment manager can be notified.

[0130] Here, the above only warns the administrator of that when two units are stopped, but when one of the two stopped units is in a stopable state (that is,
(If it is in a stopped state that is neither a failure nor a regular inspection),
It is conceivable to further proceed with this and to start up the one that can be started up and return it to operation. From this point of view, the operation control device 330 has a startup and return function as the fourth function. This function will be described in detail below.

(4) Startup / Return Function An example of the operation sequence related to the startup / return function provided in the operation control device 330 will be described with reference to FIG.

For example, when the blower 4a among the three blowers 4a to 4c is stopped in a standby state which is neither a failure nor a periodic inspection by a manual instruction input from an input means (not shown) (at this time, an interlocking stop function). The blower 9a is also stopped by the blower control device 22 that the blower 4b among the blowers 4b, 4c in operation has stopped due to a failure.
When detected in step S21, as shown in FIG. 17, a start-up operation signal is output to the blower control device 22 to start up the blower 4a and return to the operation state. This control is performed before the interlocking stop function of the operation control device 330 is activated and the wind blower 4b is stopped. The closing control signals for the opening / closing dampers 16a to 16c and 19a to 19c are omitted because they are complicated, but in reality, each opening / closing damper is closed according to the stop of the corresponding blower / exhaust fan. The closing control signal is output so that

In addition, the blower 4a is operated while the blower 4a is stopped.
Although the description has been made by exemplifying the case where b is out of order, the invention is not limited to this, and the other blowers 4b and 4c or the blower 9a are not limited thereto.
The same control is performed even when one of the other units fails due to the stop of to c, the start operation signal is output, and the blower / exhaust fan that can be started is started.

With this, when the operation stop instruction is given to one of the blowers / exhausts to put them in a standby state, even if a failure occurs in the blowers / exhausts in operation, the air volume is prevented from decreasing. The operation of the ventilation and air conditioning equipment can be continued.

The structure other than those mentioned above is the same as the first structure.
This is almost the same as the embodiment described above. Further, in the interlocking stop function of the above embodiment, the operation control device 330 automatically outputs an operation stop signal to the exhaust fan control device 24 in response to the stop of one of the blowers 4 to turn off one of the blowers 9. Stopped, but not limited to this. That is, when one of the blowers 4 is stopped, the operation control device 330 is manually controlled through a driving support system having a function of transmitting the control panel (not shown) in the central control room of the nuclear power plant. The ventilation / air-conditioning equipment manager is given a warning / instruction necessary to stop one of the blowers 9, and the ventilation / air-conditioning equipment manager operates according to the warning / instruction. In response, an operation stop signal for stopping one of the blowers 9 may be transmitted to the blower controller 24. Further, in the air volume fine adjustment function of the above embodiment, the operation control device 330 automatically supplies the supply air volume adjustment damper control device 25 and the exhaust air volume in response to the stop of one of the blowers 4 and one of the air exhausters 9. A fine opening adjustment signal is transmitted to the adjustment damper control device 27, and the remaining 2
Although the air volume Q2s of the single blower 4 and the air volume Q2h of the remaining two air exhausters 9 are matched, the present invention is not limited to this. That is, the operation control device 330 includes one blower 4 and the blower 9
When one of the blowers 4 stops, for example, the air volume of the blower 4 and the exhaust fan 9 are manually controlled through an operation support system having a function of transmitting the control panel (not shown) in the central control room of the nuclear power plant. The ventilation / air-conditioning equipment manager is given a warning / instruction necessary to match the air volume, the ventilation / air-conditioning equipment manager operates according to the warning / instruction, and the operation control device 330 responds to this operation. (Or the air volume of the air exhauster 9) may be finely adjusted. Furthermore, (1) interlocking stop function (2) air volume fine adjustment function (3) air volume decrease warning function (4) start-up / recovery function of the operation control apparatus 330 described above is added to the operation control apparatus 30 of the first embodiment. May be. At this time, in addition to the effect obtained in the first embodiment, the effect obtained in the third embodiment can be obtained together.

Fourth Embodiment of the Present Invention FIGS. 18 and 19
This will be described below. The present embodiment is an embodiment in which the operation control device is provided with an air volume fine adjustment function having a different configuration. The same members as those in the third embodiment are designated by the same reference numerals.
FIG. 18 is a conceptual diagram showing a system outline of the ventilation air conditioning equipment 400 according to this embodiment. In FIG. 18, the ventilation air conditioning equipment 400 of the present embodiment is different from the ventilation air conditioning equipment 300 of the third embodiment in that the air volume changing function of the operation control device 430 is the supply air volume adjusting dampers 15a to 15c or the exhaust air volume adjusting dampers. 1
It is not performed by adjusting the opening degree of 9a to 9c, but is performed by adjusting the rotational speeds of the blowers 4a to 4c and the exhaust fans 9a to 9c. That is, the blowers 4a to 4c and the exhaust fans 9a to 9c are variable speed blowers and variable speed blowers whose rotation speed is variable, and the contents of the operation sequence related to the air volume changing function provided in the operation control device 430 are In addition, the supply air flow rate adjustment damper control device 25 and the exhaust air flow rate adjustment damper control device 27 do not receive the control signal from the operation control device 430 and independently supply the supply air flow rate adjustment damper 15
a to c and the exhaust air volume adjustment dampers 19a to 19c are controlled.

The operation sequence provided in the operation control device 430 differs from the operation sequence of the operation control device 330 of the third embodiment only in the above-mentioned (2) air volume fine adjustment function. An example of the operation sequence related to the adjusting function will be described with reference to FIG. FIG. 19 shows the third
16 is a diagram corresponding to FIG. 15 in the example of FIG. During normal operation (that is, when the blowers 4a to 4c and the exhaust fans 9a to 9c are all operating), for example, for the purpose of periodic inspection of the ventilation and air conditioning equipment, the ventilation and air conditioning equipment manager or the like inputs not shown. When the instruction to stop the blower 4a is manually input from the means, as shown in FIG.
30 outputs an operation stop signal to the blower control device 22 to stop the blower 4a, and outputs a closing control signal to the opening / closing damper control device 33 to close the opening / closing damper 16a. Further, an operation stop signal is output to the blower control device 24 to stop the blower 9a, and the open / close damper control device 3
A closing control signal is output to 4 to close the opening / closing damper 20a. Then, the rotation speed fine adjustment signal is sent to the blower control device 22 and the rotation speed fine adjustment signal is sent to the blower control device 24, whereby the rotation speeds and the discharge speeds of the remaining blowers 4b and 4c that continue to be operated. Finely adjusting the number of revolutions of the air blowers 9b and 9c, and the air flow rate Q supplied by the two air blowers 4b and 4c.
2s and the exhaust air volume Q2h by the two air exhausters 9b and 9c are made to match.

The configuration other than the above is almost the same as that of the third embodiment.

Although the above description has been given by taking the case where the blower 4a is stopped as an example, the present invention is not limited to this, and one of the other blowers 4b or 4c or one of the blowers 9a to 9c can be manually selected. The same control is performed when stopping, and fine adjustment of the air volume balance is performed.

As described above, similarly to the third embodiment, even when a part of the blowers 4a to 4c and the exhaust fans 9a to 9c are stopped, the entire blower 4 and the blower 4 do not generate a subtle air volume imbalance. It is possible to balance the air volume with the whole 9.

20 and 21 of the fifth embodiment of the present invention.
This will be described below. The present embodiment is an embodiment mainly focused on selectively supplying a required air volume to a specific room in the building when a part of the blower and the exhaust fan is stopped. The same members as those in the first to fourth embodiments are designated by the same reference numerals. In the above second to fourth embodiments, the air volumes of the blower 4 and the exhaust fan 9 are changed as in the first embodiment. Since only a few spare units are provided unlike the conventional one, when one of the blowers 4 and the exhausters 9 is stopped from operation, the supplied air volume and ventilation capacity are reduced by that amount, and the air volume to each room 6a-c is reduced. It becomes smaller uniformly. And it was to deal with the case where the required air volume such as the periodic inspection of the power plant was originally small with the relatively small air volume.

Here, of all the rooms 6a to 6c in the building 6 to which the air volume is supplied by the ventilation and air conditioning equipment, a certain room (not limited to one room) specified in advance by the ventilation and air conditioning equipment manager. ) Only wants to always satisfy a certain ventilation demand air volume, but it may be possible to allow a considerable reduction in air volume for other rooms. That is, for example, the ventilation air volume of the next room (when the air volume decreases) can allow the air volume decrease as compared to the other rooms. (A) In a room with a large amount of heat generated inside, such as a room in which a heat exchanger is installed, the allowable room temperature is set higher than other rooms, which may limit the entry of workers during normal times. (B) The allowable room temperature other than the room where the workers in the nuclear power plant are resident may be set to the allowable operating temperature at which general electrical equipment such as lighting and measuring devices will not fail (do not significantly reduce life expectancy). is there. However, the increase in room temperature above the permissible operating temperature due to the decrease in air volume is not transmitted during the summer when the outdoor temperature is high.
Only when the blower is stopped, the frequency of occurrence is low,
The probability of functional deterioration due to a failure of general electrical equipment is extremely low.

The ventilation air-conditioning equipment 500 of this embodiment copes with such a case, and the operation control device 530 gives priority to other rooms in the building and preferential supply for selectively supplying a required air volume to a specific room. It has a function.

FIG. 20 is a conceptual diagram showing a system outline of the ventilation air conditioning equipment 500 according to this embodiment. 20, the ventilation air-conditioning equipment 500 of the present embodiment differs from the ventilation air-conditioning equipment 400 of the fourth embodiment in that the distribution supply is such that the openings of the distribution supply duct air volume adjustment dampers 17a to 17c can be individually adjusted. This is because the duct air volume adjustment damper control device 28 is provided and the operation sequence in the operation control device 530 is correspondingly different as described above.

An example of the operation sequence relating to the priority supply function provided in the operation control device 530 will be described with reference to FIG. FIG. 21 is a diagram corresponding to FIG. 19 in the fourth embodiment. When the blower 4a is stopped during normal operation (that is, when the blowers 4a to 4c and the exhaust fans 9a to 9c are all operating) and this stop state is detected by the blower control device 22, the operation is performed. Control device 53
Based on the interlocking stop function, 0 outputs a closing control signal to the opening / closing damper control device 33 to close the opening / closing damper 16a and outputs a closing control signal to the opening / closing damper control device 34 to output the opening / closing damper as shown in FIG. 20a is closed, and an operation stop signal is output to the blower control device 24 to stop the blower 9a. Then, at this time, if an instruction for prioritizing ventilation in a specific room (for example, the room 6a) is manually input in advance from an input unit (not shown) by the ventilation air conditioning facility manager, the operation control device 530 causes the designated room priority ventilation. The control signal is output to the distribution / supply duct air volume adjustment damper control device 28, which increases the opening of the distribution / supply duct air volume adjustment damper 17a in the room 6a.
Air supply amount adjustment damper 17b for distribution and supply ducts in rooms 6b, 6c,
The opening degree of 17c becomes small, and the air volume is preferentially supplied to the room 6a.

Although the above description has been made by taking the case where the blower 4a fails and stops as an example, the same as the third and fourth embodiments, the purpose is to perform a periodic inspection of the ventilation and air conditioning equipment.
Similar control is performed when the ventilation / air-conditioning equipment manager manually inputs an instruction to stop the blower 4a from an input means (not shown). Further, the above description has been made by taking the case where the blower 4a is stopped as an example, but the present invention is not limited to this, and the same control is performed when one of the other blowers 4b or 4c or the blowers 9a to 9c is stopped. The air volume is preferentially supplied to a specific room.

As described above, according to the work environment required for each of the rooms 6a to 6c (for example, the air volume does not uniformly decrease in all the rooms 6a to 6c in the building 6 at the same rate as in the conventional case) (for example, , The ventilation air conditioning equipment manager can selectively supply the required air volume so that the ventilation required air volume of the room designated in advance is satisfied) to maintain the room environment. That is, for example, it becomes possible to send the air volume from another room where the air volume maintenance is not strictly required to a specific room where the air volume maintenance is strictly required, and to prevent a decrease in the air volume of this particular room.

In the priority supply function of the operation control device 530 of the above-mentioned embodiment, the operation control device 530 stops the blower 4 and the exhaust fan 9 one by one, and the ventilation / air-conditioning equipment manager who has been input in advance. According to the priority ventilation instruction by
Although the designated room priority ventilation control signal is automatically output to the distribution / supply duct air volume adjustment damper control device 28, the present invention is not limited to this. That is, the operation control device 530 includes a driving support system having a function of transmitting, for example, to a control panel (not shown) in the central control room of the nuclear power plant when each of the blower 4 and the exhaust fan 9 is stopped. Via the manual control, a warning / instruction necessary for preferentially ventilating a specific room is given to the ventilation / air conditioning equipment manager, and the ventilation / air conditioning equipment manager operates according to this warning / instruction, and the operation control device 530 A configuration may be adopted in which a specific room is preferentially ventilated according to this operation. Also, the first
The above-described priority supply function of the operation control device 530 may be added to the operation control device 30 of the embodiment. At this time, in addition to the effect obtained in the first embodiment, the effect obtained in the fifth embodiment can be obtained together. Further, in the first to fifth embodiments, the opening / closing dampers 16a to 16c are used.
However, the opening / closing damper control devices 33 and 34 controlled by the control signal of the operation control device 30 are configured to open / close the supply duct 5 and the exhaust duct 7, but the invention is not limited to this. That is, instead of an opening / closing damper, as in the prior art shown in FIG. 5, a gravity damper that opens and closes depending on the air volume is provided with a mechanism that automatically closes with the weight of the weight attached to the blades of the valve when the air volume decreases. The opening / closing damper control devices 33 and 34 may be omitted. Similar effects are obtained in these cases as well.

The sixth embodiment of the present invention will be described with reference to FIG. The same members as those in the first to fifth embodiments are designated by the same reference numerals. FIG. 22 is a conceptual diagram showing a system outline of the ventilation air conditioning equipment 600 according to this embodiment. In FIG. 22, the ventilation air conditioning equipment 600 according to the present embodiment is different from the ventilation air conditioning equipment 100 according to the first embodiment in that the supply flow rate is adjusted by the blowers 4a to 4c provided in the supply duct 5. The functions of the air volume adjustment dampers 15a to 15c are controlled by the blower 4a to
upstream supply air amount adjustment dampers 615Ua-c on the upstream side of c
And the downstream side supply air volume adjustment dampers 615La to c on the downstream side of the blowers 4a to 4c, respectively, and each opening is controlled by the upstream side supply air volume adjustment damper control device 625U and the downstream side supply air volume adjustment damper control device 625L. In addition to the adjustment, the operations of these two control devices are further adjusted by the supply air flow rate adjustment damper control device 625, which is a higher-order control device, and the supply air flow rate adjustment damper control device 625 is operated by the operation control device 630.
It is controlled by the control signal from. Along with this, the opening / closing dampers 16a to 16c and the opening / closing damper control device 3
3 is omitted, and its closing / opening function is performed by the downstream-side supply air volume adjustment dampers 615La to 615La-c and the downstream-side supply air volume adjustment damper control device 625L.

Similarly, the function of the exhaust air flow rate adjusting dampers 19a to 19c provided in the exhaust duct 7 for adjusting the exhaust gas flow rate by the exhaust air blowers 9a to 9c is to perform the function of the upstream exhaust air flow rate upstream of the air exhausters 9a to 9c. Adjustment dampers 619Ua-c and blower 4a
~ Downstream exhaust air volume adjustment damper 619La on the downstream side of ~ c ~
c and the opening degree of each of them is adjusted by the upstream side exhaust air flow rate adjustment damper control device 627U and the downstream side exhaust air flow rate adjustment damper control device 627L, and the operation of these two control devices is a higher control device. The adjustment is performed by the exhaust air volume adjustment damper control device 627, and the exhaust air volume adjustment damper control device 627 is controlled by the control signal from the operation control device 630. Along with this, the opening / closing dampers 20a to 20c and the opening / closing damper control device 34 are omitted, and the closing / opening function thereof is the downstream side supply air amount adjusting damper 6.
19La-c and downstream side supply air volume adjustment damper control device 6
It is performed by 27L.

The other structure is almost the same as that of the ventilation air conditioning equipment 100 of the first embodiment.

According to this embodiment, the same effect as that of the first embodiment can be obtained, and in addition, the air volume can be adjusted more reliably.

The ventilation and air conditioning equipment 300 of the third embodiment.
The configuration of the ventilation air conditioning equipment 600 described above may be applied to the above. At this time, the same effect as that of the third embodiment is obtained, and in addition, there is an effect that the air volume fine adjustment can be performed more reliably.

The seventh embodiment of the present invention will be described with reference to FIG. Of the system outline of the ventilation air conditioning equipment 700 according to the present embodiment, FIG. 23 shows the downstream side (blower side) from the building 6, which is the main part of the present embodiment. The same members as those in the sixth embodiment are designated by the same reference numerals. In FIG. 23, the ventilation air conditioning equipment 700 according to the present embodiment is the ventilation air conditioning equipment 6 according to the sixth embodiment.
The difference from 00 is that the exhaust treatment devices 8a to 8c and the exhaust fan 9a
To three-c, three connection ducts 36a, 36b, 36c for connecting the exhaust ducts 7a, 7b, 7c to each other,
Connection duct air volume adjustment dampers 37a, 37b, 37c provided on the respective connection ducts 36a, 36b, 36c
And the intermediate exhaust duct air amount adjusting dampers 35a, 35b, which are provided on the downstream sides of the exhaust treatment devices 8a to 8c in the respective exhaust ducts 7a, 7b, 7c and on the upstream side of the connection parts to the connecting ducts 36a, 36b, 36c. 35c is provided, and the connection duct air volume adjustment damper control device 727m ₂ for adjusting the opening of the connection duct air volume adjustment dampers 37a, 37b, 37c,
An intermediate exhaust duct air amount adjustment damper control device 727m ₁ for adjusting the opening degree of the intermediate exhaust duct air amount adjustment dampers 35a, 35b, 35c, and an upstream side exhaust air amount adjustment damper control device 62.
7U and the operation with the downstream side exhaust air volume adjustment damper control device 627L are adjusted by the exhaust air volume adjustment damper control device 727 which is a higher-order control device, and this exhaust air volume adjustment damper control device 727 receives a control signal from the operation control device 730. To be controlled.

The other structure is almost the same as that of the sixth embodiment.

According to this embodiment, the same effect as that of the sixth embodiment can be obtained. In addition to this, the connecting duct 36a
Since it becomes possible to exchange exhaust gas between the exhaust ducts 7a to 7c via the exhaust gas processing devices 8a to 7c, the exhaust gas processing devices 8a to 8c and the exhaust fan 9a to 9c.
c and c can be stopped independently and the periodic inspection can be performed independently. That is, for example, when performing a periodic inspection of one exhaust treatment device 8a, the exhaust ducts 7a before and after the exhaust treatment device 8a are connected to the upstream side exhaust air amount adjustment damper 619Ua and the intermediate exhaust duct air amount adjustment damper 3a.
If it is closed at 5a, the amount of exhaust air passing through the remaining exhaust treatment devices 8b and 8c becomes large, but the connecting ducts 36a to 36c
Since the large air volume can be distributed to all the air exhausters 9a to 9c including the air exhausters 9a on the downstream side of the exhaust processing device 8a via the connection duct air volume adjustment dampers 37a to 37c, the air exhausters 9a to 9c can be distributed. A normal air flow can be introduced to. Therefore, at this time, it is not necessary to stop the exhaust fan, and it is possible to secure the ventilation air volume during normal operation.

The eighth embodiment of the present invention will be described with reference to FIG. Of the system outline of the ventilation and air conditioning equipment 800 according to this embodiment, a conceptual diagram around the building 6, which is the main part of this embodiment, is shown in FIG.
4 shows. The same members as those in the fifth embodiment are designated by the same reference numerals. 24, the ventilation air conditioning equipment 8 according to the present embodiment
00 is different from the ventilation air conditioning equipment 500 according to the fifth embodiment in that the opening degree of the distribution exhaust duct air volume adjustment dampers 18a to 18c provided near the ventilation exhaust ports of the distribution exhaust ducts 7Aa, 7Ab, 7Ac is different. It is adjusted by the distribution exhaust duct air volume adjustment damper control device 838, and the operations of the distribution supply duct air volume adjustment damper control device 28 and the distribution exhaust duct air volume adjustment damper control device 838 are further performed by the distribution duct air volume adjustment damper control device 839 which is a higher-level control device. This distribution duct air volume adjustment damper control device 839 is adjusted and the operation control device 8
It is controlled by a control signal from 30.

The other structure is almost the same as that of the ventilation air conditioning equipment 500 of the fifth embodiment.

According to this embodiment, the same effect as that of the fifth embodiment can be obtained.

The ninth embodiment of the present invention will be described with reference to FIG. Of the system outline of the ventilation and air conditioning equipment 900 according to this embodiment, a conceptual diagram around the building 6, which is the main part of this embodiment, is shown in FIG.
5 shows. The same members as those in the fifth embodiment are designated by the same reference numerals. In FIG. 25, the ventilation air conditioning equipment 9 according to the present embodiment
00 is different from the ventilation and air conditioning equipment 500 according to the fifth embodiment in that each room 6d, 6e, 6f, 6g in the building 6 is different.
That is, the ventilation and air conditioning are performed not only by the supply duct 5 and the exhaust duct 7, but also by the transfer duct 31 between the rooms. That is, the total supply air volume from the blowers 4a to 4c (not shown) is the distribution supply duct 5A of the supply duct 5.
Part of the air volume supplied to the rooms 6d and 6g via d and 5Ag, and also supplied to the room 6e via the transfer duct 31 _de, and part of the air volume supplied to the room 6g. Is supplied to the chambers 6e, 6f via the transfer ducts _31ge and _31gf . The air volumes thus supplied to the rooms 6d to 6g are collected via the distribution exhaust ducts 7Ad, 7Ae, 7Af, and 7Ag, respectively, and are guided to the air blowers 9a to 9c (not shown). And at this time,
The opening degree of the distribution supply duct air volume adjustment dampers 17d, 17g provided on the distribution supply ducts 5Ad and 5Ag was adjusted by the distribution supply duct air volume adjustment damper control device 28, and provided on the transfer ducts 31 _de , 31 _ge , 31 _gf . The opening degree of the transfer duct air volume adjustment dampers 32 _de , 32 _ge , 32 _gf is adjusted by the transfer duct air volume adjustment damper control device 940, and the distribution exhaust duct air volume adjustment damper 18d provided in the distribution exhaust ducts 7Ad, 7Ae, 7Af, 7Ag. The opening degrees of 18e, 18f, and 18g are adjusted by the distribution exhaust duct air volume adjustment damper control device 838. Then, the distribution supply duct air volume adjustment damper control device 28, the transfer duct air volume adjustment damper control device 940, and the distribution exhaust duct air volume adjustment damper control device 8
The operation of No. 38 is further adjusted by a building damper control device 941 which is a higher-level control device, and this building damper control device 9
41 is controlled by a control signal from the operation control device 930.

According to this embodiment, as in the case of the fifth embodiment, the required air volume can be selectively supplied according to the work environment required for the rooms 6d to 6g.

In the first to ninth embodiments, the supply air volume adjusting dampers 15a to 15c are located upstream of the blowers 4a to 4c, and the exhaust air volume adjusting dampers 19a to 19c are located upstream of the air exhausters 9a to 9c. Although it is set to the side, it is not limited to this and may be set to any part on the supply duct 5 or the exhaust duct 7. Also in this case, the same effect can be obtained.

[0163]

According to the present invention, the air volume changing means changes the supply air volume / exhaust air volume of each of the remaining non-stopped blowers / exhausts to the design rated air volume larger than the normal air volume.
Even when a part of the blower / exhaust fan is stopped, the performance required for the ventilation / air conditioning equipment as a whole can be maintained under normal conditions. Also, at this time, it is not necessary to provide a spare unit as in the conventional case, so the number of blowers / exhausts and the ducts / exhaust treatment devices connected to them can be reduced, restrictions on the layout inside the nuclear power plant building, and building design. It is possible to reduce the restrictions imposed on the device and improve the device layout. Also,
By reducing the amount of confirmation / replacement parts, it is possible to reduce the amount of maintenance and inspection work and improve equipment maintainability.

Further, since the exhaust air can be exchanged between the exhaust ducts via the connecting duct provided between the filter means and the blower, the filter means and the blower can be stopped independently. It is possible to carry out the periodic inspection independently.

Further, according to the present invention, the supply air volume fine adjusting means or the exhaust air volume fine adjusting means operates in the air volume balance adjusting means, and the supply air volume of all the remaining fans not stopped and the remaining air volume not stopped. Since the fine adjustment is performed so that the exhaust air volume of the blower matches, the air volume of the entire blower and the entire blower can be balanced even when a part of the blower / exhaust fan is stopped.

Further, according to the present invention, since the opening degree of each of the plurality of distribution supply duct air flow rate adjusting valves is individually adjusted by the preferential supply means, it is possible to selectively operate according to the work environment required for each room. It can supply the required air volume and maintain the room environment.

Further, since it further has a stop instruction means for manually and selectively stopping each blower and each exhaust fan, one blower (or one blower (or It is possible to smoothly perform periodic inspections while stopping the exhaust fan) while maintaining the performance of the entire ventilation and air conditioning equipment. Further, since it further has a start-up / recovery means for starting one of the blower and the exhaust fan which has been stopped by the instruction of the stop instructing means to restore the operation, it is possible to continue the operation of the ventilation air conditioning equipment even if a failure occurs. it can. Further, the detection signal from the stop detection means is input, and when the stop detection means detects a stop of a predetermined number or more of the plurality of blowers and exhaust fans, it further has an air volume decrease warning means for issuing a warning, so that the air volume is reduced. However, it is possible to notify the ventilation and air conditioning equipment manager that it is difficult to maintain a predetermined function.

[Brief description of drawings]

FIG. 1 is a conceptual diagram showing a system outline of a ventilation air conditioning equipment according to a first embodiment of the present invention.

FIG. 2 is a diagram showing air volume-pressure characteristic curves of the blower and the exhaust fan shown in FIG.

3 is a diagram showing an example of an operation sequence provided in the operation control device shown in FIG.

4 is a diagram showing a combination of operations realized by the operation control device shown in FIG.

FIG. 5 is a conceptual diagram showing an outline of a system of ventilation air conditioning equipment according to a comparative example of the first embodiment of the present invention.

6 is a diagram showing an example of an operation sequence provided in the operation control device shown in FIG.

FIG. 7 is a diagram showing a combination of operations realized by the operation control device shown in FIG.

FIG. 8 is a diagram showing a modified example of the driving combination shown in FIG. 7.

FIG. 9 is a conceptual diagram showing an outline of a system of ventilation air conditioning equipment according to a second embodiment of the present invention.

10 is a diagram showing an example of an operation sequence provided in the operation control device shown in FIG.

FIG. 11 is a conceptual diagram showing an outline of a system of ventilation air conditioning equipment according to a third embodiment of the present invention.

FIG. 12 is a diagram showing air volume-pressure characteristic curves of the blower and the exhaust fan shown in FIG. 11.

FIG. 13 is provided in the operation control device shown in FIG.
It is a figure which shows an example of the driving sequence regarding the interlocking stop function.

14 is a diagram showing a combination of operations realized by the operation control device shown in FIG.

FIG. 15 is provided in the operation control device shown in FIG.
It is a figure which shows an example of the operation sequence regarding the air volume fine adjustment function.

16 is provided in the operation control device shown in FIG.
It is a figure which shows an example of the driving sequence regarding the air volume fall warning function.

FIG. 17 is provided in the operation control device shown in FIG.
It is a figure which shows an example of the driving sequence regarding a starting return function.

FIG. 18 is a conceptual diagram showing a system outline of ventilation air conditioning equipment according to a fourth embodiment of the present invention.

FIG. 19 is a diagram showing an example of an operation sequence provided in the operation control device shown in FIG. 18.

FIG. 20 is a conceptual diagram showing a system outline of ventilation air conditioning equipment according to a fifth embodiment of the present invention.

21 is a diagram showing an example of an operation sequence provided in the operation control device shown in FIG.

FIG. 22 is a conceptual diagram showing a system outline of ventilation air conditioning equipment according to a sixth embodiment of the present invention.

FIG. 23 is a conceptual diagram showing the downstream side of the building in the system outline of the ventilation and air conditioning equipment according to the seventh embodiment of the present invention.

FIG. 24 is a conceptual diagram in the vicinity of a building in the system outline of the ventilation and air conditioning equipment according to the eighth embodiment of the present invention.

FIG. 25 is a conceptual diagram of the vicinity of a building in the system outline of the ventilation and air conditioning equipment according to the ninth embodiment of the present invention.

[Explanation of symbols]

4a-c Blower 5 Supply duct 5Aa-c, d, g Distribution supply duct 6 Building 6a-g Room 7 Exhaust duct 7Aa-g Distribution exhaust duct 7a-c Exhaust duct 8a-c Exhaust treatment device 9a-c Exhaust fan 11a- c filter 15a to c supply air volume adjustment damper 17a to c, d, g distribution supply duct air volume adjustment damper 18a to g distribution exhaust duct air volume adjustment damper 19a to c exhaust air volume adjustment damper 22 blower control device (stop detection means) 24 exhaust fan Control device (stop detection means) 25 Supply air flow rate adjustment damper control device 27 Exhaust air flow rate adjustment damper control device 28 Distribution supply duct air flow rate adjustment damper control device 30 Operation control device (air flow rate change means) 31 _de , _ge , _gf transfer duct 32 _de , _{ge, gf} transport ducts air amount adjusting damper 35a~c intermediate exhaust duct air flow control damper 36a~c connection duct 7a to c Connection duct air flow adjustment damper 100 Ventilation and air conditioning equipment 200 Ventilation and air conditioning equipment 230 Operation control device (air volume change means) 300 Ventilation air conditioning equipment 330 Operation control device (interlocking stop means, air volume balance adjustment means, air volume drop warning means, start / return) Means) 400 Ventilation and air conditioning equipment 430 Operation control device (interlocking stop means, air volume balance adjusting means, air volume decrease warning means, start / return means) 500 Ventilation air conditioning equipment 530 Operation control device (interlocking stop means, priority supply means) 600 Ventilation air conditioning equipment 615La-c Downstream supply air volume adjustment damper 615Ua-c Upstream supply air volume adjustment damper 619La-c Downstream exhaust air volume adjustment damper 619Ua-c Upstream exhaust air volume adjustment damper 625 Supply air volume adjustment damper control device 625L Downstream supply air volume adjustment damper Controller 625U Upstream supply wind Volume adjustment damper control device 627 Exhaust air volume adjustment damper control device 627L Downstream exhaust air volume adjustment damper control device 627U Upstream exhaust air volume adjustment damper control device 630 Operation control device (air volume changing means) 700 Ventilation and air conditioning equipment 727 Exhaust air volume adjustment damper control device 727m ₁ Intermediate exhaust duct air volume adjustment damper control device 727m ₂ Connection duct air volume adjustment damper control device 730 Operation control device (air volume change means) 800 Ventilation and air conditioning equipment 830 Operation control device (air volume change means) 838 Distribution exhaust duct air volume adjustment damper control device 839 Distribution duct air flow adjustment damper control device 900 Ventilation and air conditioning equipment 930 Operation control device (air flow changing means) 940 Transfer duct air flow adjustment damper control device 941 Building interior damper control device

Claims (37)

[Claims] 1. A plurality of blowers for pressure-feeding outside air to a plurality of rooms provided in a building of a nuclear power plant, a plurality of blowers for discharging exhaust air from each of the plurality of rooms, and the plurality of blowers. In the ventilation and air conditioning equipment of a nuclear power plant, which has a stop detection means for detecting the respective stop states of the blower and the exhaust fan, and which normally performs ventilation and air conditioning of each of the plurality of rooms, in normal times, the supply air volume of each blower And the exhaust air volume of each exhaust fan is a normal air volume obtained by dividing the maximum air volume required for the entire ventilation and air conditioning equipment by the number of each blower and the number of each exhaust fan, and the plurality of blowers and exhaust fans by the stop detection means. When a part of the stopped state is detected, at least one of the supply air volume of each of the remaining non-stopped blowers and the exhaust air volume of each of the remaining non-stopped blowers is set to the normal air volume. An air flow rate changing means for changing the air flow rate to a different size is further provided, and at least one of the plurality of blowers and exhaust fans is configured such that the design rated air flow rate of each unit is larger than the normal air flow rate. The air volume changing means is a means for changing at least one of the supply air volume of each blower and the exhaust air volume of each exhaust fan from the normal air volume to the design rated air volume. Air conditioning equipment. 2. The ventilation and air conditioning equipment for a nuclear power plant according to claim 1, wherein each of the plurality of _fans has a design rated air volume f _i0 , the number of the plurality of _fans is n _i , and the entire ventilation and air conditioning equipment. When the maximum air flow rate required by the above is set to be 100%, it is configured such that f _i0 = 100 / (n _i -1)%, and the air flow rate changing unit normally sets the air flow rate of each blower to 100%. / N _i percent of the normal air flow rate f _i1, and when the stop detection means detects the stopped state of any one of the plurality of blowers, the air flow rate of each blower is correspondingly changed to the normal air flow rate f i.
Ventilation and air conditioning equipment for a nuclear power plant, characterized in that it has means for changing from _i1 to the design rated air volume f _i0 . 3. The ventilation air conditioning equipment for a nuclear power plant according to claim 1, wherein each of the plurality of exhaust _fans has a design rated air volume f _e0 , and the number of the plurality of exhaust _fans is n _e When the maximum air flow required for the entire equipment is 100%, f _e0 = 100 / (n _e -1)% is established, and the air flow changing means is normally provided for each exhaust fan. The air flow rate is set to 100 / n _e % of the normal air flow rate f _e1, and when the stop detecting unit detects the stopped state of any one of the plurality of air blowers, the air flow rate of each air blower is correspondingly changed. The normal air volume f
Ventilation and air conditioning equipment for a nuclear power plant, characterized by having means for changing from _e1 to the design rated air flow f _e0 . 4. The ventilation air-conditioning equipment for a nuclear power plant according to claim 1, further comprising a plurality of supply duct air volume adjusting valves respectively installed in the supply ducts of the plurality of blowers, and the air volume changing means. During normal operation, the opening of the supply duct air volume adjusting valve is set to a first supply opening according to the normal air volume, and when the stop detection unit detects a partial stop state of the plurality of blowers, Corresponding to this, it is a means for setting the opening of the supply duct air volume adjusting valve to a second supply opening which is larger than the first supply opening corresponding to the design rated air volume. Ventilation and air conditioning equipment. 5. The ventilation air-conditioning equipment for a nuclear power plant according to claim 4, wherein each of the plurality of supply duct air volume adjustment valves is provided in the supply duct upstream of the blower. An adjusting valve and a downstream supply duct air volume adjusting valve provided on the downstream side of the blower in the supply duct, wherein the air volume changing means includes the upstream supply duct air volume adjusting valve and the downstream supply duct. Ventilation and air conditioning equipment for a nuclear power plant, characterized in that it is means for setting an air flow rate adjusting valve to the first and second supply opening degrees. 6. The ventilation air conditioning equipment for a nuclear power plant according to claim 1, further comprising a plurality of exhaust duct air flow rate adjusting valves respectively installed in exhaust ducts of the plurality of exhaust fans, and the air flow rate changing means. In the normal state, the opening degree of the exhaust duct air volume adjusting valve is set to the first exhaust opening degree according to the normal air volume, and the stop detecting means detects a partial stop state of the plurality of exhaust fans. In some cases, it is means for correspondingly setting the opening degree of the exhaust duct air volume control valve to a second exhaust opening degree that is larger than the first exhaust opening degree according to the design rated air volume. Ventilation and air conditioning equipment for nuclear power plants. 7. The ventilation air-conditioning system for a nuclear power plant according to claim 6, wherein each of the plurality of exhaust duct air volume control valves is provided in the exhaust duct on an upstream side of the exhaust fan. An air flow rate adjusting valve and a downstream side exhaust duct air flow rate adjusting valve provided in the exhaust duct on a downstream side of the exhaust fan are provided, and the air flow rate changing means includes the upstream side exhaust duct air flow rate adjusting valve and the downstream side. Ventilation and air conditioning equipment for a nuclear power plant, characterized in that it is means for setting an exhaust duct air flow rate adjusting valve to the first and second exhaust opening degrees. 8. The ventilation and air conditioning equipment for a nuclear power plant according to claim 6, wherein a plurality of filter means are provided in the exhaust duct upstream of the exhaust fan, the filter means and the exhaust fan. Between the exhaust ducts, and a plurality of connecting duct air volume adjusting valves respectively provided in the plurality of connecting ducts, and the plurality of exhaust duct air volume adjusting valves. Each of the nuclear power plants is equipped with an intermediate exhaust duct air flow rate adjusting valve provided downstream of the filter means in the exhaust duct and upstream of a connecting portion to the connecting duct. Ventilation and air conditioning equipment. 9. The ventilation and air conditioning equipment for a nuclear power plant according to claim 1, wherein the air flow rate changing means normally sets the rotation speed of the blower to a first supply rotation speed according to the normal air flow rate, and detects the stoppage. When the means detects a partial stopped state of the plurality of blowers, the number of rotations of the blower is correspondingly larger than the first number of rotations.
Ventilation and air conditioning equipment of a nuclear power plant, characterized in that it is a supply rotation speed changing means for changing the supply rotation speed of the. 10. The ventilation air conditioning equipment for a nuclear power plant according to claim 9, wherein the supply rotation speed changing means uses one of a planetary gear, a fluid coupling, and a thyristor to change the rotation speed of the blower. Ventilation and air conditioning equipment for nuclear power plants, characterized by being a means for changing. 11. The ventilation air-conditioning equipment for a nuclear power plant according to claim 1, wherein the air flow rate changing unit sets the rotation speed of the exhaust fan to a first exhaust rotation speed according to the normal air flow rate during the normal operation, and stops the operation. When the detection means detects a partial stopped state of the plurality of exhaust fans, the rotation speed of the exhaust fan is set to a second exhaust rotation speed higher than the first rotation speed in response to this. Ventilation and air conditioning equipment for a nuclear power plant, characterized in that it is a means for changing the exhaust speed. 12. The ventilation air conditioning equipment for a nuclear power plant according to claim 11, wherein the exhaust rotation speed changing means uses any one of a planetary gear, a fluid coupling, and a thyristor. Ventilation and air-conditioning equipment for nuclear power plants, characterized in that it is a means for changing. 13. The ventilation air-conditioning system for a nuclear power plant according to claim 1, wherein the air volume changing means automatically changes the air volume of the blower / exhaust fan to the design rated air volume using electrical / mechanical means. Ventilation and air-conditioning equipment for nuclear power plants, characterized in that it is an automatic control means. 14. The ventilation and air conditioning equipment for a nuclear power plant according to claim 1, wherein the air volume changing means gives a warning and an instruction for changing the air volume of the blower / exhaust fan to the ventilation air conditioning equipment manager by manual control. A nuclear power plant comprising: a first means; and a second means for changing the air volume of the blower / exhaust fan according to the operation of the ventilation / air-conditioning facility manager based on the warning and instruction by the first means. Ventilation and air conditioning equipment for power plants. 15. A plurality of blowers for respectively pumping outside air to a plurality of rooms provided in a building of a nuclear power plant, a plurality of blowers for discharging exhaust air from each of the plurality of rooms, and the plurality of blowers. Stop detecting means for detecting the respective stop states of the blower and the exhaust fan, and when the stop detecting means detects the stop state of the blowers, the operation of the corresponding number of the exhaust fans is stopped in conjunction with the stop detection. When a stop state of the blower is detected by the means, it has interlocking stop means for stopping the operation of the corresponding number of blowers in an interlocking manner, and ventilation of a nuclear power plant that performs ventilation and air conditioning of each of the plurality of rooms. In air-conditioning equipment, a supply air volume fine adjustment unit that can finely adjust the supply air volume of each blower, an exhaust air volume fine adjustment unit that can finely adjust the exhaust air volume of each exhaust fan, and the stop detection unit described above When some of the blowers and blowers are stopped and the corresponding number of blowers and blowers are stopped by the interlocking stopping means, the supply air volume of all remaining blowers that are not stopped is also stopped. The air flow rate balance adjusting means for operating at least one of the supply air volume fine adjusting means and the exhaust air volume fine adjusting means so that the exhaust air volume of the remaining exhaust fans does not match. Ventilation and air conditioning equipment for nuclear power plants. 16. The ventilation air-conditioning equipment for a nuclear power plant according to claim 15, further comprising a plurality of supply duct air volume adjustment valves respectively installed in the supply ducts of the plurality of blowers, and finely adjusting the supply air volume. Ventilation and air conditioning equipment for a nuclear power plant, characterized in that the means is means for finely adjusting the opening of the supply duct air flow rate adjusting valve. 17. The ventilation air conditioning equipment for a nuclear power plant according to claim 16, wherein each of the plurality of supply duct air volume control valves is provided in the supply duct upstream of the blower. An adjusting valve and a downstream supply duct air volume adjusting valve provided on the downstream side of the blower in the supply duct, wherein the supply air volume fine adjusting means includes the upstream supply duct air volume adjusting valve and the downstream side. Ventilation and air conditioning equipment for a nuclear power plant, which is a means for finely adjusting the opening of a supply duct air flow control valve. 18. The ventilation air-conditioning equipment for a nuclear power plant according to claim 15, further comprising a plurality of exhaust duct air volume control valves respectively installed in exhaust ducts of the plurality of exhaust fans, The ventilation air conditioning equipment for a nuclear power plant, wherein the adjusting means is a means for finely adjusting the opening degree of the exhaust duct air flow rate adjusting valve. 19. The ventilation air-conditioning facility for a nuclear power plant according to claim 18, wherein each of the plurality of exhaust duct air flow rate adjusting valves is provided in the exhaust duct at an upstream side of the exhaust fan. An air volume adjusting valve and a downstream side exhaust duct air volume adjusting valve provided on the downstream side of the exhaust fan in the exhaust duct are provided, and the exhaust air volume fine adjusting means includes the upstream side exhaust duct air volume adjusting valve and Ventilation and air conditioning equipment for a nuclear power plant, which is a means for finely adjusting the opening of a downstream exhaust duct air flow rate adjusting valve. 20. The ventilation air conditioning system for a nuclear power plant according to claim 15, wherein the supply air volume fine adjustment unit is a unit for finely adjusting the rotation speed of the blower. Facility. 21. The ventilation air conditioning equipment for a nuclear power plant according to claim 15, wherein the exhaust air volume fine adjustment unit is a unit for finely adjusting the rotation speed of the exhaust fan. Air conditioning equipment. 22. The ventilation air-conditioning equipment for a nuclear power plant according to claim 15, wherein the air volume balance adjusting means is one of the supply air volume fine adjusting means and the exhaust air volume fine adjusting means in accordance with the operation of the interlocking stopping means. A ventilation and air conditioning equipment for a nuclear power plant, which is an automatic control means for operating at least one of them. 23. The ventilation air conditioning equipment for a nuclear power plant according to claim 15, wherein the air volume balance adjusting means is manually controlled according to the operation of the interlocking stopping means to finely adjust the supply air volume and the exhaust air volume. First means for giving a warning and instruction for operating at least one of the means to the ventilation and air conditioning equipment manager, and the operation according to the operation of the ventilation and air conditioning equipment manager based on the warning and instruction by the first means A ventilation air conditioning equipment for a nuclear power plant, comprising: a supply air volume fine adjustment means and a second means for operating at least one of the exhaust air volume fine adjustment means. 24. In the ventilation air conditioning equipment for a nuclear power plant according to claim 15, in normal times, the supply air volume of each blower and the exhaust air volume of each exhaust fan are set to the maximum air volume required for the entire ventilation air conditioning equipment. The normal air volume is divided by the number of air blowers and the number of air blowers, and the stop detection means detects a partial stopped state of the plurality of air blowers and air blowers, and the interlocking stop means corresponds to the number of air blowers and air blowers. Is stopped, the air volume changing means for changing at least one of the supply air volume of each of the remaining non-stopped blowers and the exhaust air volume of each of the remaining non-stop air blowers to an air volume of a size different from the normal air volume. Further, and, at least one of the plurality of blowers and exhaust fan is configured so that the design rated air volume of each unit is larger than the normal air volume, Ventilation and air conditioning equipment for a nuclear power plant, wherein the changing means is a means for changing at least one of the supply air volume of each blower and the exhaust air volume of each exhaust fan from the normal air volume to the design rated air volume. 25. A plurality of blowers for respectively sending outside air to a plurality of rooms provided in a building of a nuclear power plant, a plurality of blowers for discharging exhaust air from each of the plurality of rooms, and a plurality of the plurality of blowers. Stop detecting means for detecting the respective stop states of the blower and the exhaust fan, and when the stop detecting means detects the stop state of the blowers, the operation of the corresponding number of the exhaust fans is stopped in conjunction with the stop detection. When a stop state of the blower is detected by the means, it has interlocking stop means for stopping the operation of the corresponding number of blowers in an interlocking manner, and ventilation of a nuclear power plant that performs ventilation and air conditioning of each of the plurality of rooms. In air-conditioning equipment, it is installed respectively in a plurality of distribution and supply ducts that distribute and guide the total supply air volume by the plurality of fans to each room in the building, and adjust the supply air volume to each room. A plurality of possible distribution supply duct air flow control valves, and the stop detection means detects a partial stop state of the plurality of blowers and exhaust fans, and the interlocking stop means stops the corresponding number of exhaust fans and blowers. When it is carried out, the supply air volume of all the non-stop remaining blowers is preferentially distributed to at least one specific room in the building,
Ventilation and air conditioning equipment for a nuclear power plant, comprising: priority supply means for individually adjusting the opening of each of the plurality of distribution supply duct air flow control valves. 26. The ventilation and air conditioning equipment for a nuclear power plant according to claim 25, wherein the priority supply means individually adjusts the opening degree of each of the plurality of distribution supply duct air flow rate adjusting valves in accordance with the operation of the interlocking stop means. Ventilation and air conditioning equipment for nuclear power plants, characterized in that it is an automatic control means for adjusting to. 27. The ventilation and air conditioning equipment for a nuclear power plant according to claim 25, wherein the priority supply means opens each of the plurality of distribution supply duct air flow rate adjusting valves by manual control in response to the operation of the interlocking stop means. First means for giving a warning and instructions to the ventilation and air conditioning equipment manager for individually adjusting the degree, and a plurality of the plurality of units according to the operation of the ventilation and air conditioning equipment manager based on the warnings and instructions by the first means. The second to individually adjust the opening of each of the distribution and supply duct air flow control valves
Ventilation and air conditioning equipment of a nuclear power plant, characterized by comprising: 28. The ventilation air-conditioning system for a nuclear power plant according to claim 25, wherein the two adjacent rooms of the plurality of rooms provided in the building are connected to each other, and one of the two rooms is provided. Further includes a plurality of transfer ducts for transferring ventilation air from the room to another room, and a plurality of transfer duct air volume adjusting valves respectively provided in the plurality of transfer ducts, wherein the priority supply means distributes each supply. Ventilation and air conditioning equipment for a nuclear power plant, which is a means for individually adjusting the opening of the duct air volume adjusting valve and the opening of each transfer duct air volume adjusting valve. 29. The ventilation air-conditioning equipment for a nuclear power plant according to claim 25, wherein the ventilation air-conditioning equipment is installed in each of a plurality of distribution exhaust ducts for collecting exhaust air volume from each room in the building and guiding the collected air to the plurality of exhaust fans. The plurality of distribution exhaust duct air flow rate adjusting valves capable of adjusting the exhaust air flow rate from each room, and the stop detecting means detects a partial stopped state of the plurality of blowers and exhaust fans, and the interlocking stop means. When the corresponding number of exhaust fans and blowers are stopped, each opening of the corresponding distribution exhaust duct air volume adjustment valve is individually adjusted according to the opening adjustment of the distribution supply duct air volume adjustment valve by the priority supply means. Ventilation and air conditioning equipment for a nuclear power plant, further comprising: 30. The ventilation air conditioning equipment for a nuclear power plant according to claim 29, wherein the priority exhaust means individually adjusts the opening of each of the plurality of distribution exhaust duct air volume adjustment valves in accordance with the adjustment by the priority supply means. Ventilation and air conditioning equipment for nuclear power plants, characterized in that it is an automatic control means for adjusting to. 31. The ventilation air-conditioning equipment for a nuclear power plant according to claim 29, wherein said priority exhaust means is manually controlled to open each of said plurality of distribution exhaust duct air volume adjustment valves in response to adjustment by said priority supply means. First means for giving a warning and instructions to the ventilation and air conditioning equipment manager for individually adjusting the degree, and a plurality of the plurality of units according to the operation of the ventilation and air conditioning equipment manager based on the warnings and instructions by the first means. Ventilation and air conditioning equipment for a nuclear power plant, comprising: second means for individually adjusting the respective openings of the distribution exhaust duct air flow rate adjusting valve. 32. The ventilation and air conditioning equipment for a nuclear power plant according to claim 25, wherein in normal times, the supply air volume of each blower and the exhaust air volume of each exhaust fan are set to the maximum air volume required for the entire ventilation air conditioning equipment. The normal air volume is divided by the number of air blowers and the number of air blowers, and the stop detection means detects a partial stopped state of the plurality of air blowers and air blowers, and the interlocking stop means corresponds to the number of air blowers and air blowers. Is stopped, the air volume changing means for changing at least one of the supply air volume of each of the remaining non-stopped blowers and the exhaust air volume of each of the remaining non-stop air blowers to an air volume of a size different from the normal air volume. Further, and, at least one of the plurality of blowers and exhaust fan is configured so that the design rated air volume of each unit is larger than the normal air volume, Ventilation and air conditioning equipment for a nuclear power plant, wherein the changing means is a means for changing at least one of the supply air volume of each blower and the exhaust air volume of each exhaust fan from the normal air volume to the design rated air volume. 33. The ventilation air conditioning equipment for a nuclear power plant according to claim 15 or 25, wherein the interlocking stop means automatically uses an electric / mechanical means in accordance with a detection result of the stop detecting means. -Ventilation and air conditioning equipment for nuclear power plants, which is an automatic control means for stopping the exhaust fan. 34. The ventilation and air conditioning equipment for a nuclear power plant according to claim 15 or 25, wherein the interlocking stop means is a warning for stopping the blower / exhaust fan by manual control according to the detection result of the stop detecting means. And a first means for giving an instruction to the ventilation / air-conditioning equipment manager, and a second means for stopping the blower / exhaust fan in accordance with the operation by the ventilation / air-conditioning equipment administrator based on the warning and instruction by the first means. Ventilation and air conditioning equipment for a nuclear power plant, which is equipped with. 35. The ventilation and air conditioning equipment for a nuclear power plant according to claim 15 or 25, further comprising stop instruction means for manually and selectively stopping each of the blowers and the exhaust fans. Ventilation and air conditioning equipment. 36. The ventilation and air conditioning equipment for a nuclear power plant according to claim 35, wherein when one of the one blower and the exhaust fan is stopped by the stop instructing means, another blower is operated by the stop detecting means. And, when a stop due to a failure of the exhaust fan is detected, the nuclear power supply further has a start-up / recovery means for starting one of the blower and the exhaust fan that has been stopped by the instruction of the stop instructing means to restore the operation. Ventilation and air conditioning equipment for power plants. 37. The ventilation air conditioning equipment for a nuclear power plant according to claim 1, 15, or 25, wherein a detection signal from the stop detection means is input, and the stop detection means includes the plurality of blowers. And a ventilation air-conditioning facility for a nuclear power plant, further comprising an air volume reduction warning means for issuing a warning when a predetermined number or more of exhaust fans are stopped.