JPH11344204A - Boiler system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accelerate automation of a boiler system as a whole and realization of an unattended boiler room, and raise safety by controlling a boiler and a fluid supply system by having them correlated to each other, in a boiler system comprising the boiler and the fluid supply system for supplying fuel, feed water or the like to the boiler. SOLUTION: A boiler 1 and a fluid supply system 5 are connected by a communication circuit 18, and at least one of the boiler 1 and the fluid supply system 5 is controlled by making use of information from the other. For instance, in the case where at least one of the boiler 1 and the fluid supply system 5 is stopped in emergency because of running into an unusual state, the information of the unusual state is transferred to the other so as to perform an emergency stop. By comparing a fluid consumption V1 obtained from the operation state of the boiler 1 with a fluid supply amount V2 from the fluid supply system 5 to the boiler 1, fluid supply piping 7 is judged as to leakage, and controled on the basis of the judgement.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a boiler system including a boiler and a fluid supply system for supplying a fluid such as fuel and water to the boiler.

[0002]

2. Description of the Related Art A boiler system includes one or more boilers and a fluid supply system for supplying fuel and water to the boiler. As one of the fluid supply systems, for example, a fuel supply system usually installs a relatively small-capacity fuel tank (hereinafter, referred to as an “auxiliary tank”) near a boiler (for example, a boiler room). The fuel is supplied to the boiler via. And
The auxiliary tank is provided with a sensor for detecting the remaining amount of fuel therein, and replenishes the auxiliary tank with fuel from a large-capacity fuel tank (hereinafter, referred to as an "original tank") based on the amount of fuel reduction. .

[0003]

In such a boiler system, the control of the boiler and the control of the fluid supply system are performed independently. For example, when the boiler system includes one boiler, the control device of the boiler itself is used. When the boiler system includes a plurality of boilers, the control device of the boiler itself is further controlled by the number control device. Only the control is performed. In the fuel supply system, the control of keeping the liquid level in the auxiliary tank constant is as follows:
It is performed only on the fuel supply system side independently of the boiler side. Further, the boiler controls the boiler to be stopped when an abnormality occurs. In this case, it is necessary to manually open and close the fuel supply valve in the fuel supply system.

[0004] Therefore, the problem to be solved by the present invention is to automate the boiler system as a whole and to control the boiler system by associating the control on the boiler side with the control on the fluid supply system side in the boiler system described above. It is to promote unmanned rooms and enhance safety.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and the invention according to claim 1 has a boiler and a fluid supply system for supplying a fluid to the boiler. A boiler system comprising:
The boiler and the fluid supply system are connected by a communication line, and at least one of the boiler and the fluid supply system performs control using information from the other.

According to a second aspect of the present invention, when at least one of the boiler and the fluid supply system performs an emergency stop due to the occurrence of an abnormal situation, the other includes:
It is characterized in that an emergency stop is performed based on information on this abnormal situation.

According to a third aspect of the present invention, the fluid supply pipe is provided by comparing a fluid consumption V1 obtained from an operation state of the boiler with a fluid supply amount V2 from the fluid supply system to the boiler. It is characterized by judging whether or not there is a leak.

According to a fourth aspect of the present invention, a fluid supply capacity of the fluid pump is determined based on a fluid consumption V1 obtained from an operation state of the boiler and a driving time of the fluid pump in the fluid supply system. It is characterized by:

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A boiler system according to the present invention includes a boiler and a fluid supply system for supplying fuel and water to the boiler. Then, the boiler and the fluid supply system are connected by an appropriate communication line so that information can be communicated from at least one of the boiler and the fluid supply system to the other. This communication line has information on one side's control status (hereinafter, referred to as "control information"), operation status information (hereinafter, referred to as "operation information"), and abnormality occurrence information (hereinafter, referred to as "abnormality information"). Is transmitted to the other side. That is, the boiler and the fluid supply system change their operating conditions under their respective controls, and also detect anomalies. However, such control information, operating information and anomaly information are transmitted at least through this communication line. Transmit from one to the other. The other side that has received the information on one side performs, for example, the following control using this information. Here, the control means inputting a signal, performing an operation such as judgment, and outputting a signal for operating the component device.

First, when an abnormal situation such as an earthquake or a fire occurs on the boiler side or a failure occurs on the boiler side, the boiler side stops under its own control. And
Abnormality information such as occurrence of an abnormal situation or failure on the boiler side, control information indicating that control for emergency stop of the boiler has been performed, or operation information indicating that emergency stop of the boiler has been performed,
To the fluid supply system. The fluid supply system stops the fluid supply valve and the liquid supply pump based on the information so as to prevent the movement of the fluid in the fluid supply system. Conversely, when the fluid supply system detects an abnormal situation or a failure, the fluid supply system is also emergency stopped. However, the abnormality information, the control information indicating that the control to perform the emergency stop of the fluid supply system, and the fluid Operation information indicating that the supply system has been stopped in an emergency can be transmitted to the boiler, and the boiler can be stopped in an emergency.

[0011] Further, on the boiler side and the fluid supply system side, the operation status changes due to the respective controls. By transmitting the control information, the operation information, and the abnormality information from at least one side to the other side, the other side is transmitted. Is
Using the information from one side, or using the information from one side and the information on the other side, the following judgment is made, and used for own control and the other control as needed.

First, the determination of fluid leakage will be described.
In this case, on the boiler side, the fluid consumption in the boiler is obtained from the operation status and operation time of the boiler. On the fluid supply system side, the fluid supply amount is obtained and compared with the fluid consumption amount obtained by communication. And fluid consumption,
The leakage of the fluid supply pipe is determined by comparing the fluid supply amount. The amount of fluid consumption is determined by the signal from the boiler controller, whether the boiler is operating or stopped, the amount of combustion if it is operating, and the number of operating boilers if multiple boilers are installed. Based on the calculation. If the boiler is provided with a means such as a flow meter that can directly detect the consumption of the fluid, the fluid consumption can be determined based on the measurement value of the flow meter.

When the fluid supply amount is larger than the fluid consumption amount, it is determined that fluid leakage has occurred from the tank, the fluid supply pipe in the fluid supply system, and the fluid supply pipe on the boiler side. This determination is made even when the fluid consumption is 0, that is, when the fluid is supplied even though the boiler is stopped (when the fluid amount in the fluid tank is decreasing), the fluid leakage occurs. Judge that you are.

The determination of the fluid leakage can be made on the boiler side. That is, on the boiler side, the fluid consumption is determined by the above-described procedure, and the fluid consumption is determined by comparing the fluid consumption with the fluid consumption obtained by the communication from the fluid supply system. The fluid consumption on the boiler side is
It can also be determined on the fluid supply system side. That is,
The fluid supply system obtains information on the operating status and operating time of the boiler through communication, and obtains the fluid consumption in the boiler based on this information.

Further, the fluid supply capacity of the fluid pump can be determined based on the above-mentioned fluid consumption and the operating time of the fluid pump in the fluid supply system. That is, the fluid supply amount per unit time is determined from the above-described fluid consumption amount and the operation time of the fluid pump. If the fluid supply amount per unit time is equal to or less than the set value, the fluid supply capacity of the fluid pump decreases. Judge that you are. The processing for determining the fluid supply capacity is preferably performed after the processing for determining the fluid leakage described above. The determination of the fluid supply capacity can be performed on the boiler side by transmitting information on the operating time of the fluid pump from the fluid supply system side to the boiler side, similarly to the determination of the fluid leakage described above.

As described above, when the leakage of the fluid supply pipe or the decrease in the fluid supply capacity is detected, the alarm indicating the leakage of the fluid or the decrease in the fluid supply capacity is provided on at least one of the boiler side and the fluid supply system. And display. Then, based on the information on the leakage of the fluid or the decrease in the fluid supply capacity, the boiler or the fluid supply system is emergency stopped,
It displays the repair request. Here, the control to be performed by the boiler or the fluid supply system after the detection of the abnormality is set in accordance with the type of equipment using the boiler system as a heat source. For example, depending on the type of equipment on the output side of the boiler, whether to immediately stop the boiler or to stop after operating for a predetermined time is set.

As described above, according to the present invention, the control of the boiler and the fluid supply system can be performed in association with each other.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a boiler system according to the present invention will be described. FIG. 1 is an explanatory diagram of a first embodiment of a boiler system according to the present invention, FIG. 2 is an explanatory diagram of a control procedure when an abnormality occurs in the first embodiment, and FIG. FIG. 4 is an explanatory diagram of a determination procedure, and FIG. 4 is an explanatory diagram of a determination procedure of a decrease in fuel supply capacity of the fuel pump in the first embodiment. Here, in the following description, a case where the fluid supply system is a fuel supply system will be described.

First, in the boiler system shown in FIG. 1, a plurality of boilers 1 are installed and controlled according to the load by a so-called number control method. That is, the steam outlet pipe of each of the boilers 1 is connected to a common steam header 2, and the combustion / stop of each of the boilers 1 is controlled based on the pressure in the steam header 2. More specifically, the operation of each of the boilers 1 is controlled by a boiler controller 3 attached to each of the boilers 1 according to a preset program. Is performed by each of the boiler controllers 3 in response to a signal from the number control device 4.

The fuel supply system 5 includes a fuel supply pipe 7 extending from the main tank 6 to each of the boilers 1.
An auxiliary tank 8 having a smaller capacity than the main tank 6 is provided in the fuel supply pipe 7. The main tank 6 is provided with a main tank liquid level detector 9. The auxiliary tank 8 has a first liquid level detector 10 for continuously detecting the liquid level.
And a second liquid level detector 11 for detecting the liquid level stepwise. Here, since the auxiliary tank 8 is provided with the first liquid level detector 10 for continuously detecting the liquid level and the second liquid level detector 11 for detecting the liquid level in a stepwise manner, they are mutually backed up. It performs an important role and compares the liquid levels detected by the detectors with each other, thereby judging abnormalities with each other. The first liquid level detector 10 is, for example, a pressure sensor and continuously detects the remaining amount of fuel in the auxiliary tank 8 as pressure. The first liquid level detector 1
As 0, a device that measures the weight of the auxiliary tank 8 using a load cell or the like and detects a change in the remaining amount of fuel can be used. Further, the second liquid level detector 11 uses, for example, a float type sensor that detects liquid levels in two stages of an upper liquid level H and a lower liquid level L.

In the fuel supply pipe 7, between the main tank 6 and the auxiliary tank 8, a fuel pump 12 and a fuel cutoff mechanism 13 are provided in this order from the main tank 6 side. In the first embodiment, the fuel cut-off mechanism 13 is configured such that two shut-off valves 14 are connected in series so that the fuel can be cut off reliably. Further, a fuel source valve 15 is provided downstream of the auxiliary tank 8. The fuel supply system 5 is configured from the main tank 6 in the fuel supply pipe 7 to the fuel base valve 15. Generally, the auxiliary tank 8 and the fuel base valve 15 are connected to the respective boilers 1. , Together with the steam header 2 and the number control device 4 are installed in a boiler room (not shown).

In the fuel supply system 5, the main tank liquid level detector 9, the first liquid level detector 10, the second liquid level detector 11, the fuel pump 12, the fuel cutoff mechanism 13, and the fuel The main valve 15 is connected to the fuel supply controller 1
6 is connected. The fuel controller 16 controls the fuel supply system 5 itself, and outputs signals from the main tank liquid level detector 9, the first liquid level detector 10, and the second liquid level detector 11. In addition, the control of the fuel pump 12, the fuel cut-off mechanism 13, and the fuel source valve 15 is performed using information from each of the boilers 1.

Further, the boiler system includes a seismic sensor as the abnormal condition detecting means 17. Examples of the abnormal state detecting means 17 include a fire detector for detecting a fire in addition to the seismic detector, and at least one of a seismic detector and a fire alarm is selected and used. In the boiler system shown in FIG.
7 is connected to the fuel supply controller 16.

Further, it is sufficient that each of the boilers 1 and the fuel supply system 5 can communicate with each other from at least one of them. In the first embodiment, each of the boiler controllers 3 and the number control device 4 And the fuel supply controller 16
Are connected by a wired or wireless communication line 18, thereby enabling mutual communication. The communication line 18 transmits control information, operation information and abnormality information of each of the boilers 1 to the fuel supply controller 16, and transmits control information, operation information and abnormality information of the fuel supply system 5 to each of the boiler controllers 3. And the number control device 4. Each of the boilers 1 and the fluid supply system 5 performs its own control using the information from the other side in addition to its own information.

Here, in the first embodiment, each of the boilers 1 is configured so that the number of operating units and the amount of combustion are controlled by the number control device 4 as described above. Each of the boilers 1 is connected between the boiler controller 3 and the number control device 4 by the communication line 18.
And the transmission and reception of control signals and operation information (information on stop, combustion, amount of combustion, and the like of each boiler 1). Therefore, transmission and reception of information between each of the boiler controllers 3 and the fuel supply controller 16 can be performed directly between them or via the number control device 4.

In the boiler system shown in FIG. 1, each of the boiler controllers 3, the number control device 4 and the fuel supply controller 16 are connected in series by the communication line 18. When the communication line 18 is connected as described above, the mutual communication between the devices is performed by setting an identification number in advance for each device and assigning the identification numbers of the sending and receiving devices to the information. By transmitting the information on the communication line 18, information is transmitted between predetermined devices.

The operation of the above configuration will now be described. First, after the boiler system is started, the number control device 4
Controls the number of operating boilers 1 and the amount of combustion in accordance with the load by detecting the pressure in the steam header 2.
Further, the fuel supply controller 16 controls the liquid level in the auxiliary tank 8 to be maintained within a certain range according to the consumption of fuel in the boiler system. That is, the fuel supply controller 16 activates the fuel pump 12 when the liquid level falls below the lower limit liquid level L based on the detection signals from the first liquid detector 10 and the second liquid level detector 11. Fuel shut-off mechanism 1
When the liquid level reaches the upper limit liquid level H, the fuel pump 12 is stopped and the fuel cut-off mechanism 13 is set in the cut-off state.

Then, each of the boiler controllers 3, the number control device 4 and the fuel supply controller 16 are connected by a communication line 18,
By enabling mutual communication, each boiler 1 is associated with the fuel supply system 5 to perform the following integrated control.

That is, after starting the boiler system, when all the boilers 1 are in a stopped state,
There is no fuel consumption. Therefore, based on the operation information of the boiler from each of the boiler controllers 3 or the number control device 4,
The fuel supply controller 16 closes the fuel supply valve 15. With this control, even if the fuel supply pipe 7 leaks due to an unexpected situation, it is possible to prevent the fuel from actually leaking.

When an abnormal situation or a failure occurs in each of the boilers 1, each of the boilers 1 is emergency-stopped by each of the boiler controllers 3, and operation information indicating that each of the boilers 1 has been emergency-stopped (or The fuel supply system 5 can be stopped based on the control information for emergency stop of each of the boilers 1). That is, the abnormality information, the operation information, or the control information is transmitted to the fuel supply controller 16 via the communication line 18. Then, based on this information, the fuel supply controller 16 stops the fuel cutoff mechanism 13, the fuel supply valve 15, and the liquid supply pump, for example, so as to prevent the movement of the fuel in the fuel supply system 5.

Conversely, when an abnormal situation such as an earthquake is detected on the fuel supply system 5 side, the fuel supply system 5 is also brought to an emergency stop. Is transmitted to each of the boilers 1 and the number control device 4, and the respective boilers 1 are stopped in an emergency. Hereinafter, a control procedure when an earthquake occurs will be described based on a flowchart shown in FIG. First, when the abnormal state detecting means 17 detects an earthquake, this detection signal is input to the fuel supply controller 16. The fuel supply controller 16 determines in step S1 whether an abnormal signal from the abnormal state detecting means 17 has been input, and if there is an input, closes the fuel source valve 15 and the fuel cutoff mechanism 13 in step S2. At this time, if the fuel pump 12 is operating, it is stopped. Then, in step S3, information that an abnormality has occurred is transmitted to the number control device 4. In step S4, the fuel supply controller 16 issues an alarm. On the other hand, the number control device 4 that has received the information of the occurrence of the abnormality from the fuel supply controller 16 sends a signal for emergency stop to each of the boiler controllers 3 to stop each of the boilers 1. At the time of emergency stop of each of the boilers 1, the information that an abnormality has occurred is transmitted directly to each of the boiler controllers 3 without passing through the number control device 4, thereby causing each of the boilers 1 to be stopped. It can also be configured as follows.

Further, each boiler 1 and fuel supply system 5
In, the operation status changes due to each control, but the control information, the operation information, and the abnormality information are transmitted to each other, and the following determination is performed based on this information and the own control status and the operation status. It performs control and uses it for its own control and the other control as needed. w

First, the determination of the fluid leakage will be described. The fuel supply controller 16 obtains the fuel consumption V1 from the information on the operation status and operation time of each boiler 1. Further, the fluid supply controller 16 obtains a fuel supply amount V2 in the fuel supply system 5. This fluid consumption V1
Is the number of operating boilers, the combustion amount of each operating boiler, the fuel consumption corresponding to the fuel amount, and the operating time of each boiler, based on control information and operation information from each boiler controller 3 and the number control device 4. Based on the above, the fuel consumption of each boiler as a whole is calculated. Further, when a fuel flow meter is provided in each of the boilers 1, the fuel consumption V1 can be obtained based on information on the measurement values of the fuel flow meter.

On the other hand, the fuel supply amount V2 is determined by continuously detecting a change in the liquid level in the auxiliary tank 8 by the first liquid level detector 10 so that the fuel supply amount V1 to each of the boilers 1 is determined.
Is calculated. The fuel supply amount is monitored by the second liquid level detector 11 for the liquid level in the auxiliary tank 8 changing from the upper limit liquid level H to the lower limit liquid level L due to the consumption of each of the boilers 1. Can also be determined by In this case, it corresponds to the number of operating boilers, the amount of combustion in each operating boiler, and the amount of fuel during a period from when the fuel in the auxiliary tank 8 reaches the lower limit liquid level L to the upper limit liquid level L. The fuel consumption V1 of each boiler as a whole is calculated based on the fuel consumption and the operating time of each boiler. When a fuel flow meter is provided in each of the boilers 1, the fuel consumption V1 is obtained based on information on the measured values of the fuel flow meter.

Then, the fluid supply controller 16 judges the leakage of the fluid supply pipe 7 by comparing the fuel consumption amount V1 and the fuel supply amount V2. That is, the fuel supply amount V
2 is greater than the fuel consumption V1, the fuel supply system 5
It is determined that fuel leakage has occurred from the auxiliary tank 8, the fuel supply pipe 7, and the fuel supply pipe 7 in each boiler 1. This determination is also made when the fuel consumption V1 is 0, that is, when there is fuel consumption even when all the boilers 1 are stopped (when the liquid level in the auxiliary tank 8 is low). It is determined that a fuel leak has occurred.
An example of the fuel leakage determination procedure will be described with reference to a flowchart shown in FIG.

First, in step S5, the fluid supply controller 1
Step 6 determines whether or not fuel is being supplied from the main tank 6 to the auxiliary tank 8. When fuel is being replenished, that is, when the fuel pump 12 is operating, it is not possible to detect an accurate fuel supply amount V2 from the auxiliary tank 8 to each of the boilers 1, and therefore, a determination of fuel leakage is made. Absent. When fuel supply is not being performed, that is, when the fuel pump 12 is stopped, the next step S6
Then, the fluid supply controller 16 inputs the operation information of each boiler 1 and the information of the measurement value of the fuel flow meter via, for example, the number control device 4 or directly from each boiler 1, and in step S7, the respective boilers 1 The fuel consumption amount V1 is calculated from the operation information of. For example, when the boiler 1 burns in two stages of combustion amount, high combustion and low combustion, the high combustion amount is the maximum combustion amount, and the low combustion amount is set to 50% of the high combustion amount. If there are two units burning at high combustion and one unit burning at low combustion, it means that 2.5 boilers 1 are burning in terms of high combustion. Since the combustion consumption during high combustion is determined in advance, the fuel consumption V1 is calculated by multiplying the combustion consumption by the operating time.

Subsequently, in step S8, the fluid supply controller 16 determines the fuel supply amount V2 based on the change in the liquid level by the first liquid level detector 10 or the second liquid level detector 11. Then, in step S9, the fluid supply controller 16
The fuel supply amount V2 is compared with the fuel consumption amount V1, and it is determined whether the fuel supply amount V2 is larger than the fuel consumption amount V1.
If the fuel supply amount V2 is larger than the fuel consumption amount V1, the process proceeds to step S10, where it is determined that a fuel leak has occurred, and step S10 is performed.
At 11 an alarm is issued. The above-described fuel leakage determination program is repeatedly executed at every set time (for example, one second).

The fluid supply capacity (fuel supply capacity) of the fuel pump 12 is determined by comparing the fuel consumption V1 with the operating time of the fuel pump 12.
In the first embodiment, when the liquid level in the auxiliary tank 8 falls below the lower limit liquid level L, the fuel pump 12 is started, and when the liquid level reaches the upper limit liquid level H, the fuel pump 12 is stopped. Therefore, the fuel supply capacity is determined using the period until the liquid level in the auxiliary tank 8 reaches the upper limit liquid level H from the lower limit liquid level L. The procedure for determining the fuel supply capacity of the fuel pump 12 will be described with reference to the flowchart shown in FIG.

First, in step S12, the fluid supply controller 16 determines whether the fuel pump 12 has started. When the fuel pump 12 is operating, that is, when fuel is being supplied to the auxiliary tank 6, the process proceeds to the next step S13, and the operating time of the fuel pump 12 is measured. In the next step S14, the fuel consumption V1 of the entire boiler 1 is calculated from the operation information of each boiler 1 and the fuel flow meter as described above.

Subsequently, at step S15, the fuel pump 1
It is determined whether or not the fuel pump 12 has stopped, and if the fuel pump 12 is operating, the process returns to step S13, and the operation time of the fuel pump 12 is measured and the fuel consumption V1 is continuously calculated, so that the operation is started. The integration of the time and the integration of the fuel consumption V1 are performed. If it is determined in step S15 that the fuel pump 12 has stopped, the process proceeds to step S16, and the measurement of the operating time of the fuel pump 12 ends.

That is, the above steps S13 to S1
5 measures the time until the liquid level in the auxiliary tank 8 reaches the upper limit liquid level H from the lower limit liquid level L by the operation of the fuel pump 12, and within this time, each boiler 1
Measures how much fuel has been consumed. Therefore, in the next step S17, the sum of the fuel consumption V1 of each boiler 1 and the fuel amount corresponding to the difference between the upper limit liquid level H and the lower limit liquid level L in the auxiliary tank 8 is determined by operating the fuel pump 12. By dividing by the time, the fuel supply capacity per unit time (that is, the discharge amount) is obtained. Then, in step S18, the fuel supply capacity is compared with the set value. If the fuel supply capacity is equal to or less than the set value, the process proceeds to step S19, where it is determined that the fuel supply capacity is reduced, and an alarm is issued in step S20. Of course, in step S18, if the fuel supply capacity is equal to or greater than the set value, the capacity determination process ends. The processing for determining the fluid supply capacity of the fuel pump 12 is preferably performed after the above-described processing for determining leakage.

As described above, when the fuel supply controller 16 detects a leak in the fuel supply pipe 7 or a decrease in the capacity of the fuel pump 12, the fuel supply controller 16 gives an alarm or display to that effect. In addition, this information is transmitted to each of the boilers 1 and the number control device 4 via the communication line 18, and each of the boilers 1 and the number control device 4 performs an alarm or a display indicating a leak or a decrease. In addition, each of the boilers 1 and the number control device 4 can determine
It performs an emergency stop of the boiler and displays a request for repair. Here, the control that each boiler 1 and the fuel supply system 5 should take after the detection of an abnormality is set in accordance with the type of equipment using the boiler system as a heat source. For example, depending on the type of equipment on the output side of the boiler 1, the boiler 1
Is set to stop immediately or stop after a predetermined time of operation.

As described above, according to the first embodiment of the present invention, control of the boiler 1 and the fuel supply system 5 can be performed in association with each other, and information on one side is transmitted to the other side. By using this, it is possible to detect an abnormality such as a fuel leak or a decrease in the capacity of the fuel pump. In particular, in the case of the fuel supply system described above, the amount of outflow of fuel can be minimized, and the risk of fire occurring due to ignition or the like can be avoided.

Further, in this boiler system,
A water supply system 19 is provided in addition to the fuel supply system 5 described above. Therefore, as shown in FIG. 5, the water supply system 19 can be further connected to each of the boiler controllers 3, the number control device 4 and the fuel supply controller 16 via a communication line 18. Here, in the second embodiment shown in FIG. 5, the same components as those in the first embodiment shown in FIG. 1 are denoted by the same reference numerals, and detailed description thereof will be omitted. In FIG. 5, the water supply system 19 includes a water supply pipe 20 from a water supply source (not shown) to each of the boilers 1.
Water softener 2 for removing the hardness from the raw water from the upstream side
1, a deoxygenator 22 for removing dissolved oxygen in raw water, and a water supply tank 23 for storing treated water that has been subjected to water softening and deoxidation. A controller (not shown) of the water softener 21 and a controller (not shown) of the deoxidizer 22 are connected to the communication line 18. In this configuration, the regeneration time of the water softener 21 and the inspection time of the deoxidizer 22 can be determined based on the operation information, control information, and abnormality information of each of the boilers 1. Further, by providing a water level detector in the water supply tank 23 to calculate the water supply amount and calculating the water supply consumption amount in each boiler 1 from the operation information of each boiler 1 in the same manner as in the fuel supply system 5 described above, Leakage of the water supply pipe 20 and the water supply tank 23 can be detected.

In such a boiler system, when a management device 24 for managing the entire boiler system including the operation state of each of the boilers 1 is provided as shown in FIG. Can be configured to send and receive information. Here, in the third embodiment shown in FIG. 6, the same components as those in each embodiment shown in FIGS. 1 and 5 are denoted by the same reference numerals, and detailed description thereof will be omitted. In FIG. 6, the management device 24 is connected to the communication line 18 and transmits and receives information between the management device 24 and each of the boilers 1, the fuel supply system 5, and the water supply system 18. Constitute.

According to this configuration, the management device 24
In addition to the management of the operation state of each of the boilers 1, the management of the fuel supply system 5 and the water supply system 18 can be performed collectively, and the entire boiler system can be managed in an integrated manner. Further, in the management device 24, as described above, the fuel supply controller 16 determines an abnormality such as a fuel leak or a decrease in the capacity of the fuel pump 12, and the controller of the water softener 21 determines a regeneration timing. Alternatively, the controller of the deoxygenating device 22 may determine the inspection time in place of each of these controllers. Then, the management device 24 transmits the result of this determination to each controller via the communication line 18,
Each controller can also be configured to perform its own control using these pieces of information. By doing so, as a result, each controller (for example, the fuel supply controller 16) controls using information from other controllers (for example, the boiler controller 3).

Further, the management device 24 can display the operating state and the abnormal state of the entire boiler system based on the operating information and the abnormal information from the above-mentioned controllers. For example, the abnormal state is displayed. With this configuration, it is possible to configure so that the administrator can transmit a stop signal to a place where an abnormality has occurred based on the display (or alarm) of the abnormal state.

[0048]

As described above, according to the present invention, in a boiler system provided with a boiler and a fluid supply system, the control of the boiler and the control of the fluid supply system are performed in association with each other, so that the entire boiler system is obtained. Automation and boiler room unmanned operation can be promoted, and safety can be improved.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a first embodiment of a boiler system according to the present invention.

FIG. 2 is an explanatory diagram of a control procedure when an abnormality occurs in the first embodiment.

FIG. 3 is an explanatory diagram of a procedure for determining a fuel leak in the first embodiment.

FIG. 4 is an explanatory diagram of a procedure for determining a decrease in fuel supply capacity of a fuel pump in the first embodiment.

FIG. 5 is an explanatory diagram of a second embodiment of the boiler system according to the present invention.

FIG. 6 is an explanatory diagram of a third embodiment of the boiler system according to the present invention.

[Explanation of symbols]

 Reference Signs List 1 boiler 4 number control device 5 fuel supply system (fluid supply system) 7 fuel supply pipe (fluid supply pipe) 12 fuel pump (fluid pump) 16 fuel supply controller 18 communication line

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Keiichi Ogasawara, 7-7, Horie-cho, Matsuyama-shi, Ehime Prefecture (72) Inventor Isao Higuchi 7, Horie-cho, Matsuyama-shi, Ehime Prefecture, Miura Industrial Company (72) Inventor Koichi Noguchi 7 Miori Industrial Co., Ltd., Horie-cho, Matsuyama-shi, Ehime

Claims (6)

[Claims] 1. A boiler system comprising a boiler 1 and a fluid supply system 5 for supplying a fluid to the boiler 1, wherein the boiler 1 and the fluid supply system 5 are connected by a communication line 18. A boiler system characterized in that at least one of the boiler 1 and the fluid supply system 5 performs control using information from the other. 2. When at least one of the boiler 1 and the fluid supply system 5 performs an emergency stop due to the occurrence of an abnormal situation, the other performs an emergency stop based on the information of the abnormal situation. The boiler system according to claim 1, wherein: 3. A leakage of the fluid supply pipe 7 is determined by comparing a fluid consumption V1 obtained from an operation state of the boiler 1 with a fluid supply V2 from the fluid supply system 5 to the boiler 1. The boiler system according to claim 1 or 2, wherein the determination is performed. 4. A fluid supply capacity of the fluid pump 12 is determined based on a fluid consumption V1 obtained from an operation state of the boiler 1 and a driving time of the fluid pump 12 in the fluid supply system 5. The boiler system according to any one of claims 1 to 3, wherein 5. The boiler system according to claim 1, wherein the fluid supply system 5 is a fuel supply system. 6. The boiler system according to claim 1, wherein the fluid supply system 5 is a water supply system.