CN212720114U - Control system of ventilation system of nuclear auxiliary factory building - Google Patents
Control system of ventilation system of nuclear auxiliary factory building Download PDFInfo
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- CN212720114U CN212720114U CN202020860619.0U CN202020860619U CN212720114U CN 212720114 U CN212720114 U CN 212720114U CN 202020860619 U CN202020860619 U CN 202020860619U CN 212720114 U CN212720114 U CN 212720114U
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Abstract
The application relates to the technical field of ventilation systems of nuclear power stations, and provides a control system of a ventilation system of a nuclear auxiliary plant. The method comprises the following steps: an iodine exhaust state acquisition module connected with the iodine exhaust fan, an iodine-free exhaust state acquisition module connected with the iodine-free exhaust fan and the EBA system, an air supply state acquisition module respectively connected with the air feeder and the EBA system, a first negative pressure detection module respectively connected with an air outlet of the air feeder, an iodine-free pollution area and an iodine pollution area, a second negative pressure detection module respectively connected with the iodine-free pollution area and the iodine pollution area, and a control module respectively connected with the iodine exhaust state acquisition module, the iodine-free exhaust state acquisition module, the air supply state acquisition module, the iodine exhaust fan, the iodine-free exhaust fan and the air feeder, the state of the air feeder and the iodine-free exhaust fan is controlled through the signals received by the control module, the problem that the air feeder and the iodine-free exhaust fan are abnormally tripped and closed due to unstable operation of a negative pressure control system is solved, and the operation stability of the ventilation system of the nuclear auxiliary factory building is improved.
Description
Technical Field
The utility model relates to a nuclear power station ventilation system technical field especially relates to a control system of supplementary factory building ventilation system of nuclear.
Background
The nuclear auxiliary factory building ventilation system of the primary nuclear power station in Bay and Australia Ridge controls the air blower and the iodine-free exhaust fan to be tripped and closed through the negative pressure control system, and due to the fact that the negative pressure control system of the nuclear auxiliary factory building ventilation system of the primary nuclear power station in Bay and Australia Ridge is unstable in operation, abnormal tripping and closing faults of the air blower and the iodine-free exhaust fan frequently occur, and random IO1 (nuclear safety equipment unavailable alarm) is generated. The shutdown of the nuclear auxiliary plant ventilation system causes the whole nuclear auxiliary plant to lose ventilation, the chimney flow rate is reduced, the normal operation of the nuclear power plant system is affected, and the consumption ratio (the ratio of the time actually consumed for maintenance due to faults to the withdrawal time specified by the corresponding IO clauses) of the random first group I0 (nuclear safety equipment is unavailable) is increased.
SUMMERY OF THE UTILITY MODEL
In view of the above, there is a need to provide a new control system for ventilation system of nuclear-assisted plant.
The utility model provides a control system of factory building ventilation system is assisted to nuclear, factory building ventilation system is assisted including being used for to the forced draught blower of no iodine pollution district and iodine pollution district air supply, be used for the no iodine exhaust fan that no iodine pollution district was aired exhaust, be used for the iodine exhaust fan that iodine pollution district was aired exhaust, control system includes:
the iodine exhaust state acquisition module is connected with the iodine exhaust fan and used for acquiring the state of the iodine exhaust fan and sending a first iodine exhaust signal when the iodine exhaust fan is in a closed state;
the iodine-free exhaust state acquisition module is connected with the iodine-free exhaust fan and the reactor plant ventilation system and used for acquiring the state of the iodine-free exhaust fan, acquiring whether the reactor plant ventilation system is in a working condition B or not and sending a first iodine-free exhaust signal when the reactor plant ventilation system is in a non-working condition B and the iodine-free exhaust fan is in a closed state;
the reactor plant ventilation system comprises a reactor plant ventilation system, an air supply state acquisition module and a control module, wherein the reactor plant ventilation system is used for ventilating a reactor plant, the air supply state acquisition module is respectively connected with the air supply device and the reactor plant ventilation system and is used for acquiring the state of the air supply device, the air supply state acquisition module is also used for acquiring whether the reactor plant ventilation system is in a working condition B or not and sending a first air supply signal when the reactor plant ventilation system;
the first negative pressure detection module is respectively connected with the air outlet of the air feeder, the iodine pollution-free area and the iodine pollution area and is used for respectively measuring first negative pressure and second negative pressure between the iodine pollution-free area, the iodine pollution area and the atmosphere;
the second negative pressure detection module is respectively connected with the iodine pollution-free area and is used for measuring a third negative pressure between the iodine pollution-free area and the iodine pollution-free area;
the control module is respectively connected with the iodine air exhaust state acquisition module, the iodine-free air exhaust state acquisition module, the air supply state acquisition module, the iodine exhaust fan, the iodine-free exhaust fan and the air supply fan, and is used for controlling the air supply fan to be in a closed state when receiving the first iodine air exhaust signal or the first iodine-free air exhaust signal; the control module is also used for controlling the iodine-free exhaust fan to be in a closed state when receiving the first iodine exhaust signal or the first air supply signal;
the working condition B refers to that one unit in the reactor factory ventilation system is in cold shutdown and the reactor factory ventilation system is polluted.
In one embodiment, the control system further comprises:
the iodine pollution area simulation box is respectively connected with an outlet of the air feeder, an inlet of the iodine exhaust fan, the first negative pressure detection module and the second negative pressure detection module, and is used for simulating negative pressure between the iodine pollution area and the atmosphere;
the iodine pollution-free area simulation box is respectively connected with the outlet of the air feeder, the inlet of the iodine exhaust fan, the first negative pressure detection module and the second negative pressure detection module, and is used for simulating the negative pressure between the iodine pollution-free area and the atmosphere.
In one embodiment, the iodine-free exhaust fan comprises a No. 1 exhaust fan and a No. 2 exhaust fan, the blower comprises a No. 1 blower and a No. 2 blower, the first iodine-free exhaust signal comprises a first iodine-free exhaust signal A and a first iodine-free exhaust signal B, and the first air supply signal comprises a first air supply signal A and a first air supply signal B;
the iodine-free exhaust state acquisition module is used for sending a first iodine-free exhaust signal A when the reactor plant ventilation and ventilation system is in a non-B working condition and the No. 1 exhaust fan is in a closed state; the iodine-free exhaust state acquisition module is used for sending a first iodine-free exhaust signal B when the reactor plant ventilation and ventilation system is in a non-B working condition and the No. 2 exhaust fan is in a closed state;
the air supply state acquisition module is used for sending a first air supply signal A when the reactor factory building ventilation and ventilation system is in a working condition B or the No. 1 air feeder is in a closed state; the air supply state acquisition module is used for sending a first air supply signal B when the reactor factory building ventilation and ventilation system is in a working condition B or the No. 2 air feeder is in a closed state;
the control module is used for respectively controlling the No. 1 exhaust fan, the No. 2 exhaust fan, the No. 1 blower and the No. 2 blower to be in a closed state when receiving the first iodine exhaust signal;
the control module is further used for controlling the blower No. 1 to be in a closed state when receiving the first iodine-free exhaust signal A, and controlling the blower No. 2 to be in a closed state when receiving the first iodine-free exhaust signal B;
the control module is also used for controlling the No. 1 exhaust fan to be in a closed state when receiving the first air supply signal A, and controlling the No. 2 exhaust fan to be in a closed state when receiving the first air supply signal B.
In one embodiment, the blower further comprises a blower No. 3, the iodine-free exhaust blower further comprises an exhaust blower No. 3, the first iodine-free exhaust signal further comprises a first iodine-free exhaust signal C, and the first air supply signal further comprises a first air supply signal C;
the iodine-free exhaust state acquisition module is used for sending a first iodine-free exhaust signal C when the reactor plant ventilation system is in a non-B working condition and the No. 3 exhaust fan is in a closed state;
the air supply state acquisition module is used for sending a first air supply signal C when the reactor factory building ventilation system is in a working condition B or the No. 3 blower is in a closed state;
the control module is used for respectively controlling the No. 3 exhaust fan and the No. 3 blower to be in a closed state when receiving the first iodine exhaust signal;
the control module is also used for controlling the No. 3 blower to be in a closed state when receiving the first iodine-free exhaust signal C;
the control module is also used for controlling the No. 3 exhaust fan to be in a closed state when receiving the first air supply signal C.
In one embodiment, the iodine exhaust fan comprises a No. 4 exhaust fan and a No. 5 exhaust fan, and the iodine exhaust state acquisition module is configured to send the first iodine exhaust signal when the No. 4 exhaust fan and the No. 5 exhaust fan are both in a closed state.
In one embodiment, the control module further comprises an electrical switch, and the control module controls the blower or the iodine-free exhaust fan to be in a closed state through the electrical switch.
In one embodiment, the control system further comprises a switch module connected to the control module, and the switch module is configured to send a first on signal, a second on signal, a first off signal, and a second off signal to the control module;
the iodine-free exhaust state acquisition module is also used for sending a second iodine-free exhaust signal when the reactor factory building ventilation and ventilation system is in a working condition B, the iodine-free exhaust fan is in a closed state, or the iodine-free exhaust fan is in an open state;
the control module is further used for controlling the iodine-free exhaust fan to be in an open state when receiving the first opening signal, and the control module is further used for controlling the iodine-free exhaust fan to be in a close state when receiving the first closing signal;
the control module is further used for controlling the air blower to be in an open state when receiving the second opening signal and the second iodine-free exhaust signal, and the control module is further used for controlling the air blower to be in a closed state when receiving the second closing signal.
In one embodiment, the switch module is further configured to send a first reset signal and a second reset signal;
the control module is also used for controlling the iodine-free exhaust fan to reset when receiving the first reset signal; the control module is also used for controlling the air feeder to reset when receiving the second reset signal; after the iodine-free exhaust fan is reset, the control module controls the iodine-free exhaust fan through the first opening signal and the first closing signal, and after the air feeder is reset, the control module controls the air feeder through the second opening signal and the second closing signal.
In one embodiment, the switch module comprises a first switch module for sending a first on signal and a first off signal, and a second switch module for sending a second on signal and a second off signal, wherein the first switch module is an iodine-free exhaust fan on-site switch, and the second switch module is a blower on-site switch.
In one embodiment, the first negative pressure detection module comprises a first differential pressure alarm module, the second negative pressure detection module comprises a second differential pressure alarm module, the first differential pressure alarm module is used for sending out a first differential pressure alarm signal when the first negative pressure or the second negative pressure is less than or equal to 0.59 bar, and the second differential pressure alarm module is used for sending out a second differential pressure alarm signal when the third negative pressure is less than or equal to 0.59 bar.
Among the above-mentioned control system of supplementary factory building ventilation system of nuclear, supplementary factory building ventilation system of nuclear is including being used for to the forced draught blower of no iodine pollution district and iodine pollution district air supply, be used for the no iodine exhaust fan that no iodine pollution district was aired exhaust, be used for the iodine exhaust fan that iodine pollution district was aired exhaust, its characterized in that, control system includes: the iodine exhaust state acquisition module is connected with the iodine exhaust fan and used for acquiring the state of the iodine exhaust fan and sending a first iodine exhaust signal when the iodine exhaust fan is in a closed state; the iodine-free exhaust state acquisition module is connected with the iodine-free exhaust fan and the reactor plant ventilation system and used for acquiring the state of the iodine-free exhaust fan, acquiring whether the reactor plant ventilation system is in a working condition B or not and sending a first iodine-free exhaust signal when the reactor plant ventilation system is in a non-working condition B and the iodine-free exhaust fan is in a closed state; the reactor plant ventilation system comprises a reactor plant ventilation system, an air supply state acquisition module and a control module, wherein the reactor plant ventilation system is used for ventilating a reactor plant, the air supply state acquisition module is respectively connected with the air supply device and the reactor plant ventilation system and is used for acquiring the state of the air supply device, the air supply state acquisition module is also used for acquiring whether the reactor plant ventilation system is in a working condition B or not and sending a first air supply signal when the reactor plant ventilation system; the first negative pressure detection module is respectively connected with the air outlet of the air feeder, the iodine pollution-free area and the iodine pollution area and is used for respectively measuring first negative pressure and second negative pressure between the iodine pollution-free area, the iodine pollution area and the atmosphere; the second negative pressure detection module is respectively connected with the iodine-free exhaust fan, the iodine-free pollution area and the iodine pollution area and is used for measuring a third negative pressure between the iodine pollution area and the iodine-free pollution area; the control module is respectively connected with the iodine air exhaust state acquisition module, the iodine-free air exhaust state acquisition module, the air supply state acquisition module, the iodine exhaust fan, the iodine-free exhaust fan and the air supply fan, and is used for controlling the air supply fan to be in a closed state when receiving the first iodine air exhaust signal or the first iodine-free air exhaust signal; the control module is also used for controlling the iodine-free exhaust fan to be in a closed state when receiving the first iodine exhaust signal or the first air supply signal; the working condition B refers to that one unit in the reactor factory ventilation system is in cold shutdown and the reactor factory ventilation system is polluted. The control module in the scheme controls the air feeder in the nuclear auxiliary plant ventilation system to be in the closed state when receiving the first iodine air exhaust signal sent by the iodine air exhaust state acquisition module when the iodine exhaust fan is in the closed state or the reactor plant ventilation system sent by the iodine-free air exhaust state acquisition module is in the non-B working condition and the iodine-free exhaust fan is in the first iodine air exhaust signal in the closed state, controls the iodine-free exhaust fan in the nuclear auxiliary plant ventilation system to be in the closed state when receiving the first iodine air exhaust signal sent by the iodine air exhaust state acquisition module when the iodine exhaust fan is in the closed state or the reactor plant ventilation system sent by the air supply state acquisition module is in the B working condition or the first air supply signal sent by the air feeder when the air feeder is in the closed state, and avoids the situation that the air feeder and the iodine-free exhaust fan in the nuclear auxiliary plant ventilation system are controlled to trip and close by, the problem of abnormal tripping and closing of the air feeder and the iodine-free exhaust fan frequently occurs due to unstable operation of the negative pressure control system, the operation stability of the ventilation system of the nuclear auxiliary factory building is improved, and the consumption ratio of the random first group I0 is reduced. And the first negative pressure detection module in this scheme is used for measuring the first negative pressure between no iodine pollution district and the atmosphere and the second negative pressure between iodine pollution district and the atmosphere, and the third negative pressure between iodine pollution district and no iodine pollution district is measured to the second negative pressure detection module, can acquire the negative pressure of nuclear auxiliary factory building ventilation system in the supplementary factory building ventilation system operation of nuclear, and then learns the actual conditions of nuclear auxiliary factory building ventilation system.
Drawings
FIG. 1 is a block diagram of a control system of a ventilation system of a nuclear assisted plant of an embodiment;
FIG. 2 is a block diagram of a control system of a ventilation system of a nuclear auxiliary plant in yet another embodiment;
FIG. 3 is a block diagram of a control system for a ventilation system of a nuclear assisted plant in a further embodiment;
fig. 4 is a control logic diagram of blower # 1ZV in one embodiment;
fig. 5 is a control logic diagram of exhaust fan 004ZV of embodiment No. 1.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein the term "and/or" includes any and all combinations of one or more of the associated listed items.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. In the description of the present invention, "a plurality" means at least one, e.g., one, two, etc., unless specifically limited otherwise.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the methods or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
The ventilation system of the nuclear auxiliary factory building comprises 3 blowers for blowing air to the iodine pollution-free area and the iodine pollution-free area, 3 iodine exhaust blowers for exhausting air from the iodine pollution-free area and 2 iodine exhaust blowers for exhausting air from the iodine pollution-free area, and a negative pressure detection system for detecting a first negative pressure between the iodine pollution-free area and the atmosphere, a second negative pressure between the iodine pollution-free area and the atmosphere, and a third negative pressure between the iodine pollution-free area and the iodine pollution-free area, wherein the negative pressure control system controls the No. 1 blower to trip off when the first negative pressure or the second negative pressure is less than or equal to 0.46bar (0.46 g) and greater than 0.33bar along with the change of the first negative pressure, the second negative pressure and the third negative pressure, controls the No. 2 blower to trip off when the first negative pressure or the second negative pressure is less than or equal to 0.33bar (0.33bar.g) and greater than 0.20bar, the negative pressure control system controls the No. 3 blower to trip and close; when the negative pressure detection system detects that the third negative pressure is less than or equal to 0.46bar (0.46bar.g) and greater than 0.33bar, the negative pressure control system controls the No. 1 iodine-free exhaust fan to trip and close, when the third negative pressure is less than or equal to 0.33bar (0.33bar.g) and greater than 0.20bar, the negative pressure control system controls the No. 2 iodine-free exhaust fan to trip and close, when the third negative pressure is less than or equal to 0.20bar (0.20bar.g), the negative pressure control system controls the No. 3 iodine-free exhaust fan to trip and close, and when the negative pressure control system of the nuclear auxiliary factory building is unstable, the abnormal tripping and closing faults of the blower and the iodine-free exhaust fan are caused to frequently occur, and the problem of random IO1 is caused.
As shown in fig. 1, in one embodiment, there is provided a control system of a nuclear auxiliary plant ventilation system including a blower 102 for blowing air to an iodine free and iodine contaminated area, an iodine free exhaust fan 104 for exhausting air from the iodine free contaminated area, and an iodine exhaust fan 106 for exhausting air from the iodine contaminated area, the control system including:
the iodine exhaust state acquiring module 108 is connected to the iodine exhaust fan 106, and configured to acquire a state of the iodine exhaust fan 106 and send a first iodine exhaust signal when the iodine exhaust fan 106 is in a closed state.
The iodine-free exhaust state acquisition module 110 is respectively connected with the iodine-free exhaust fan 104 and a reactor building ventilation system (EBA system) and is used for acquiring the state of the iodine-free exhaust fan 104, and the iodine-free exhaust state acquisition module 110 is also used for acquiring whether the reactor building ventilation system is in a B working condition or not and sending a first iodine-free exhaust signal when the reactor building ventilation system is in a non-B working condition and the iodine-free exhaust fan 104 is in a closed state; the working condition B (CONFIG.B) refers to that one unit in the ventilation system of the reactor factory is in cold shutdown and the ventilation system of the reactor factory is polluted.
The air supply state acquisition module 112 is connected to the air supply device 102 and the reactor building ventilation system, and is configured to acquire a state of the air supply device 102, and the air supply state acquisition module 112 is further configured to acquire whether the reactor building ventilation system is in a B operating condition, and send a first air supply signal when the reactor building ventilation system is in the B operating condition or the air supply device 102 is in a closed state.
The first negative pressure detecting module 114 is connected to the air outlet of the blower 102, the iodine pollution-free area, and the iodine pollution area, and is configured to measure a first negative pressure and a second negative pressure between the iodine pollution-free area, the iodine pollution area, and the atmosphere, respectively.
And the second negative pressure detection module 116 is respectively connected with the iodine pollution-free area and is used for measuring a third negative pressure between the iodine pollution-free area and the iodine pollution-free area.
The control module 118 is respectively connected with the iodine exhaust state acquisition module 108, the iodine-free exhaust state acquisition module 110, the air supply state acquisition module 112, the iodine exhaust fan 106, the iodine-free exhaust fan 104 and the air supply fan 102; the control module 118 is configured to control the blower 102 to be in the off state when receiving the first iodine exhaust signal or the first iodine-free exhaust signal; the control module 118 is further configured to control the iodine-free exhaust fan 104 to be in a closed state when receiving the first iodine exhaust signal or the first air supply signal.
In one embodiment, the control module further comprises an electrical switch, and the control module controls the blower or the iodine-free exhaust fan to be in a closed state through the electrical switch.
In one embodiment, the control module 118 is configured to control the blower and the iodine free exhaust blower to be in the off state 10 seconds after the iodine free exhaust blower is in the off state.
As shown in fig. 2, in one embodiment, the iodine free exhaust blower 104 includes a number 1 exhaust blower 004ZV, a number 2 exhaust blower 005ZV, and the blower 102 includes a number 1 blower 001ZV, a number 2 blower 002ZV, the first iodine free exhaust signal includes a first iodine free exhaust signal a and a first iodine free exhaust signal B, and the first blower signal includes a first blower signal a and a first blower signal B.
The iodine-free exhaust state acquisition module 110 is configured to send a first iodine-free exhaust signal a when a reactor building ventilation and ventilation system (EBA system) is in a non-B operating condition and the exhaust fan No. 1 004ZV is in a closed state; the iodine-free exhaust state acquisition module 110 is configured to send a first iodine-free exhaust signal B when the reactor building ventilation system is in a non-B operating condition and the exhaust fan 005ZV is in a closed state.
The air supply state acquisition module 112 is used for sending a first air supply signal a when the reactor building ventilation system is in a B working condition or the blower 001ZV No. 1 is in a closed state; the air supply state acquiring module 112 is configured to send a first air supply signal B when the reactor building ventilation system is in the B operating condition or the No. 2 blower 002ZV is in the off state.
The control module 118 is configured to control the No. 1 exhaust fan 004ZV, the No. 2 exhaust fan 005ZV, the No. 1 blower 001ZV, and the No. 2 blower 002ZV to be in an off state, respectively, when receiving the first iodine exhaust signal. The control module 118 is further configured to control the blower 001ZV 1 to be in the off state when receiving the first iodine-free exhaust signal a, and control the blower 002ZV 2 to be in the off state when receiving the first iodine-free exhaust signal B. The control module 118 is further configured to control the exhaust fan 004ZV No. 1 to be in the closed state when receiving the first air supply signal a, and control the exhaust fan 005ZV No. 2 to be in the closed state when receiving the first air supply signal B.
In one embodiment, the iodine free exhaust fan 104 further comprises an exhaust fan 006ZV No. 3, the blower 102 further comprises a blower fan 003ZV No. 3, the first iodine free exhaust signal further comprises a first iodine free exhaust signal C, and the first blower signal further comprises a first blower signal C.
The iodine-free exhaust state acquisition module 110 is configured to send a first iodine-free exhaust signal C when an air exchange ventilation system (EBA system) of a reactor building is in a non-B operating condition and the exhaust fan 006ZV of No. 3 is in a closed state; the air supply state acquiring module 112 is configured to send a first air supply signal C when the reactor building ventilation system is in the B operating condition or the blower 003ZV is in the off state.
The control module 118 is configured to control the exhaust fan 006ZV of the No. 3 and the blower 003ZV of the No. 3 to be in an off state when receiving the first iodine exhaust signal. The control module 118 is further configured to control the blower 003ZV 3 to be in the off state when receiving the first iodine-free exhaust signal C, and the control module 118 is further configured to control the blower 006ZV 3 to be in the off state when receiving the first supply signal C.
In one embodiment, the exhaust blower # 3 is a back-up iodine-free exhaust blower and the blower # 3 is a back-up blower.
In one embodiment, the iodine exhaust blower 106 includes a No. 4 exhaust blower 007ZV and a No. 5 exhaust blower 008ZV, and the iodine exhaust state obtaining module 108 is configured to send a first iodine exhaust signal when both the No. 4 exhaust blower and the No. 5 exhaust blower are in a closed state.
In one embodiment, exhaust blower # 5 is a back-up iodine exhaust blower.
In one embodiment, the control system further comprises blower outlet air volume adjusting barriers 014VAR and 015VAR, connected in parallel between blower 102 and the iodine contaminated area, blower outlet air volume adjusting barriers 016VAR and 017VAR, connected in parallel between blower 102 and the iodine contaminated area, iodine ventilator inlet air volume adjusting barrier 044VAR, connected between the iodine contaminated area and iodine ventilator 106, and iodine ventilator inlet air volume adjusting barrier 040VAR, connected between the iodine contaminated area and iodine ventilator 104.
In one embodiment, the control system further includes an in-situ pressure differential gauge 018LP for monitoring the pressure differential at the outlet of the blower, i.e., the total supply of the nuclear auxiliary plant ventilation system, versus the positive pressure differential between the 11 meter hall environment of the NX (nuclear auxiliary) plant, and an in-situ pressure differential gauge 019LP for monitoring the pressure differential at the inlet of the iodine-free exhaust blower, i.e., the negative pressure differential between the inlet of the iodine-free exhaust blower manifold, versus the 11 meter hall environment of the NX plant.
In one embodiment, the control system further comprises an iodine pollution area simulation box connected with the outlet of the air blower, the inlet of the iodine exhaust fan, the first negative pressure detection module and the second negative pressure detection module respectively, and the iodine pollution area simulation box is used for simulating negative pressure between the iodine pollution area and the atmosphere; the control system also comprises an iodine-free pollution area simulation box which is respectively connected with the outlet of the air feeder and the inlet of the iodine-free exhaust fan, and the iodine-free pollution area simulation box is used for simulating negative pressure between the iodine-free pollution area and the atmosphere.
In one embodiment, the first negative pressure detecting module 114 includes a negative pressure sensor 001MP connected to the iodine pollution free zone simulation box for measuring a first negative pressure between the iodine pollution free zone and the atmosphere, a negative pressure sensor 002MP connected to the iodine pollution zone simulation box for measuring a second negative pressure between the iodine pollution zone and the atmosphere, and a low pressure selector 001ZL connected to the negative pressure sensors 001MP and 002ZL MP, respectively, wherein the low pressure selector 001ZL is configured to compare the first negative pressure measured by the 001MP with the second negative pressure measured by the 002MP, and then output a lower pressure signal of the first negative pressure and the second negative pressure to the low pressure selector 002, and the low pressure selector 002ZL compares the pressure signal output by the low pressure selector 001 with the signal output by the manual valve 250 VA.
In one embodiment, the first negative pressure detection module 114 includes a first differential pressure alarm module 202 connected to the low pressure selector 001ZL and the low pressure selector 002ZL, respectively, and the first differential pressure alarm module 202 is configured to send a first differential pressure alarm signal when the first negative pressure or the second negative pressure is less than or equal to 0.59 bar.
In one embodiment, the first differential pressure warning module 202 includes a low differential pressure warning switch 007SP and a low differential pressure warning switch 008SP connected in parallel.
In one embodiment, the second negative pressure detection module 116 includes a negative pressure sensor 003MP connected to the iodine pollution-free zone simulation box, the iodine pollution zone simulation box, the first negative pressure detection module, and the second negative pressure detection module, respectively, for measuring a third negative pressure between the iodine pollution zone and the iodine pollution-free zone, and a low pressure selector 003ZL connected to the negative pressure sensor 003MP, where the low pressure selector 003ZL is configured to compare the third negative pressure measured by the 003MP with a signal output by the manual valve VA 251.
In one embodiment, the second negative pressure detecting module 116 includes a second differential pressure warning module 204 connected to the negative pressure sensor 003MP and the low pressure selector ZL 003, respectively, and the second differential pressure warning module 204 is configured to issue a second differential pressure warning signal when the third negative pressure is less than or equal to 0.59 bar.
In one embodiment, the second differential pressure alarm module 204 includes a low differential pressure alarm switch 012SP and a low differential pressure alarm switch 013SP connected in parallel.
In one embodiment, the control system further comprises a switch module 120 connected to the control module 118, wherein the switch module 120 is configured to send a first on signal, a second on signal, a first off signal, and a second off signal to the control module 118.
The iodine-free exhaust state obtaining module 118 is further configured to send a second iodine-free exhaust signal when the reactor building ventilation and ventilation system is in the B state, the iodine-free exhaust fan 104 is in the off state, or the iodine-free exhaust fan 104 is in the on state.
The control module 118 is further configured to control the iodine-free exhaust fan 104 to be in an on state when receiving the first on signal, and the control module 118 is further configured to control the iodine-free exhaust fan 104 to be in an off state when receiving the first off signal.
The control module 118 is further configured to control the blower 102 to be in an on state when receiving the second on signal and the second iodine-free exhaust signal, and the control module 118 is further configured to control the blower to be in an off state when receiving the second off signal.
In one embodiment, the switch module 120 is further configured to send a first reset signal and a second reset signal; the control module 118 is further configured to control the iodine-free exhaust fan 104 to reset when receiving the first reset signal; the control module 118 is further configured to control the blower 102 to reset when receiving the second reset signal; after the iodine-free exhaust fan 104 is reset, the control module 118 controls the iodine-free exhaust fan 104 through the first opening signal and the first closing signal, and after the blower 102 is reset, the control module 118 controls the blower 102 through the second opening signal and the second closing signal.
In one embodiment, the switch module 120 includes a first switch module for sending a first on signal and a first off signal, and a second switch module for sending a second on signal and a second off signal, the first switch module being an iodine-free blower on-site switch, and the second switch module being a blower on-site switch.
As shown in fig. 3, in one embodiment, the control system further includes a blower bypass air volume adjusting damper 018VAR connected to the blower 102 and the first negative pressure detection module 114, respectively, an iodine-free blower bypass air volume adjusting damper 019VAR connected to the iodine-free blower 104 and the second negative pressure detection module, respectively; when the first negative pressure or the second negative pressure is smaller than a first preset value, the first negative pressure detection module 114 controls to reduce the air volume of the blower 102 through the blower bypass air volume adjusting damper 018VAR, and when the third negative pressure is smaller than a second preset value, the second negative pressure detection module 116 controls to reduce the air volume of the iodine-free exhaust fan 104 through the iodine-free exhaust fan bypass air volume adjusting damper 019 VAR.
In one embodiment, the first negative pressure detecting module 114 includes a negative pressure sensor 001ZL connected to the iodine pollution free zone simulation box for measuring a first negative pressure between the iodine pollution free zone and the atmosphere, a negative pressure sensor 002ZL connected to the iodine pollution zone simulation box for measuring a second negative pressure between the iodine pollution zone and the atmosphere, a low pressure selector 001ZL connected to the negative pressure sensors 001MP and 002ZL, respectively, the low pressure selector 001ZL being configured to compare the first negative pressure measured by the 001MP with the second negative pressure measured by the 002MP, and output a lower pressure signal of the first negative pressure and the second negative pressure to the low pressure selector 002ZL, the low pressure selector 002ZL comparing the pressure signal output by the low pressure selector 001 with the signal (i.e., the first predetermined value) output by the manual valve 250VA, and when the pressure signal output by the low pressure selector ZL 001 is smaller than the first predetermined value, the amount of air supplied from the blower is reduced by the blower bypass air volume adjusting damper 018VAR control connected to the low pressure selector 002 ZL.
In one embodiment, the second negative pressure detecting module 116 includes a negative pressure sensor 003MP connected to the iodine pollution-free area simulation box, the iodine pollution area simulation box, the first negative pressure detecting module, and the second negative pressure detecting module, respectively, for measuring a third negative pressure between the iodine pollution area and the iodine pollution-free area, and a low pressure selector 003ZL connected to the negative pressure sensor 003MP, where the low pressure selector 003ZL is configured to compare the third negative pressure measured by the third negative pressure sensor 003MP with a signal (i.e., a second preset value) output by the manual valve VA 251, and when the third negative pressure is smaller than the second preset value, the air supply amount of the iodine-free exhaust fan is reduced by controlling the iodine-free exhaust fan bypass air volume adjusting damper 019VAR connected to the low pressure selector 003 ZL.
In one embodiment, the first predetermined value and the second predetermined value are both 1.035 bar.
In one embodiment, the control system further includes a display module, where the display module is configured to perform a first light display when the iodine-free exhaust fan is in an on state, for example, a three-color display lamp on the iodine-free exhaust fan performs a red light display, and the KIT system (centralized data processing system) displays that the iodine-free exhaust fan is in an on state. The display module is further used for displaying second light when the iodine-free exhaust fan is in a closed state, for example, three-color display lamps on the iodine-free exhaust fan display green light.
In one embodiment, the display module is further configured to perform a third lighting display when the blower is in the on state, for example, a three-color display lamp on the blower performs a red lighting display, and a KIT system (centralized data processing system) displays that the blower is in the on state; the display module is also used for displaying second light when the blower is in a closed state, for example, three-color display lamps on the blower display green light.
In one embodiment, the iodine-free exhaust fan comprises No. 1 exhaust fan 004ZV, No. 2 exhaust fan 005ZV, No. 3 exhaust fan 006ZV, the blower comprises No. 1 blower 001ZV, No. 2 blower 002ZV, No. 3 blower 003ZV, and the iodine exhaust fan comprises No. 4 exhaust fan 007ZV, No. 5 exhaust fan 008 ZV. Taking blower # 1 001ZV and exhaust fan # 1 004ZV as examples, as shown in fig. 4, the conditions for the control module 118 to control the blower # 1 001ZV to be in the off state include: the iodine exhaust fans 007ZV and 008ZV are both in a closed state, or the reactor factory building ventilation system is in a non-B working condition (NOT CONFIG.B) and the No. 1 exhaust fan 004ZV is in a closed state, or the No. 1 blower 001ZV is switched on locally to output a second closing signal; the conditions for the control module 118 to control the blower # 1 001ZV to be in the on state include: the reactor building ventilation and ventilation system is in a B working condition (CONFIG. B) and the No. 1 exhaust fan 004ZV is in a closed state, or the No. 1 exhaust fan 004ZV is in an open state, and receives that the No. 1 blower 001ZV local switch outputs a second opening signal. When blower 001ZV 1 is in the on state, the 001LA light alarm displays red, and when blower 001ZV 1 is in the on state, the 001LA light alarm displays green. The blower 001Z 1 can be controlled by the second off signal or the second on signal only after the blower 001Z 1 is reset.
As shown in fig. 5, the conditions for the control module 118 to control the No. 1 exhaust fan 004ZV to be in the closed state include: the iodine exhaust fans 007ZV and 008ZV are both in a closed state, or a reactor factory building ventilation system is in a B working condition (CONFIG.B), or a No. 1 blower 001ZV is in a closed state, or a No. 1 exhaust fan 004ZV local switch outputs a first closing signal; the conditions for the control module 118 to control the No. 1 exhaust fan 004ZV to be in the open state include: and receiving a first opening signal output by a local switch of the No. 1 exhaust fan 004 ZV. When No. 1 exhaust fan 004ZV is in the on state, 003LA light alarm display is red, and when No. 1 exhaust fan 004ZV is in the on state, 003LA light alarm display is green. The exhaust fan 004ZV can be controlled by the first close signal or the first open signal after the exhaust fan 004ZV 1 is reset.
When blower # 1 001ZV is on, the KIT system (centralized data processing system) displays that blower # 1 001ZV is on. When the exhaust fan 004ZV No. 1 is in the on state, the exhaust fan 004ZV No. 1 is displayed in the on state on the KIT system (centralized data processing system).
Among the above-mentioned control system of supplementary factory building ventilation system of nuclear, supplementary factory building ventilation system of nuclear is including being used for to the forced draught blower of no iodine pollution district and iodine pollution district air supply, be used for the no iodine exhaust fan that no iodine pollution district was aired exhaust, be used for the iodine exhaust fan that iodine pollution district was aired exhaust, its characterized in that, control system includes: the iodine exhaust state acquisition module is connected with the iodine exhaust fan and used for acquiring the state of the iodine exhaust fan and sending a first iodine exhaust signal when the iodine exhaust fan is in a closed state; the iodine-free exhaust state acquisition module is connected with the iodine-free exhaust fan and the reactor plant ventilation system and used for acquiring the state of the iodine-free exhaust fan, acquiring whether the reactor plant ventilation system is in a working condition B or not and sending a first iodine-free exhaust signal when the reactor plant ventilation system is in a non-working condition B and the iodine-free exhaust fan is in a closed state; the reactor plant ventilation system comprises a reactor plant ventilation system, an air supply state acquisition module and a control module, wherein the reactor plant ventilation system is used for ventilating a reactor plant, the air supply state acquisition module is respectively connected with the air supply device and the reactor plant ventilation system and is used for acquiring the state of the air supply device, the air supply state acquisition module is also used for acquiring whether the reactor plant ventilation system is in a working condition B or not and sending a first air supply signal when the reactor plant ventilation system; the first negative pressure detection module is respectively connected with the air outlet of the air feeder, the iodine pollution-free area and the iodine pollution area and is used for respectively measuring first negative pressure and second negative pressure between the iodine pollution-free area, the iodine pollution area and the atmosphere; the second negative pressure detection module is respectively connected with the iodine-free exhaust fan, the iodine-free pollution area and the iodine pollution area and is used for measuring a third negative pressure between the iodine pollution area and the iodine-free pollution area; the control module is respectively connected with the iodine air exhaust state acquisition module, the iodine-free air exhaust state acquisition module, the air supply state acquisition module, the iodine exhaust fan, the iodine-free exhaust fan and the air supply fan, and is used for controlling the air supply fan to be in a closed state when receiving the first iodine air exhaust signal or the first iodine-free air exhaust signal; the control module is also used for controlling the iodine-free exhaust fan to be in a closed state when receiving the first iodine exhaust signal or the first air supply signal; the working condition B refers to that one unit in the reactor factory ventilation system is in cold shutdown and the reactor factory ventilation system is polluted. The control module in the scheme controls the air feeder in the nuclear auxiliary plant ventilation system to be in the closed state when receiving the first iodine air exhaust signal sent by the iodine air exhaust state acquisition module when the iodine exhaust fan is in the closed state or the reactor plant ventilation system sent by the iodine-free air exhaust state acquisition module is in the non-B working condition and the iodine-free exhaust fan is in the first iodine air exhaust signal in the closed state, controls the iodine-free exhaust fan in the nuclear auxiliary plant ventilation system to be in the closed state when receiving the first iodine air exhaust signal sent by the iodine air exhaust state acquisition module when the iodine exhaust fan is in the closed state or the reactor plant ventilation system sent by the air supply state acquisition module is in the B working condition or the first air supply signal sent by the air feeder when the air feeder is in the closed state, and avoids the situation that the air feeder and the iodine-free exhaust fan in the nuclear auxiliary plant ventilation system are controlled to trip and close by, the problem of abnormal tripping and closing of the air feeder and the iodine-free exhaust fan frequently occurs due to unstable operation of the negative pressure control system, the operation stability of the ventilation system of the nuclear auxiliary factory building is improved, and the consumption ratio of the random first group I0 is reduced. And the first negative pressure detection module in this scheme is used for measuring the first negative pressure between no iodine pollution district and the atmosphere and the second negative pressure between iodine pollution district and the atmosphere, and the third negative pressure between iodine pollution district and no iodine pollution district is measured to the second negative pressure detection module, can acquire the negative pressure of nuclear auxiliary factory building ventilation system in the supplementary factory building ventilation system operation of nuclear, and then learns the actual conditions of nuclear auxiliary factory building ventilation system.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. The utility model provides a control system of factory building ventilation system is assisted to nuclear, factory building ventilation system is assisted including being used for to the forced draught blower of no iodine pollution district and iodine pollution district air supply, be used for the no iodine exhaust fan of no iodine pollution district air exhaust, be used for the iodine exhaust fan of iodine pollution district air exhaust, its characterized in that, control system includes:
the iodine exhaust state acquisition module is connected with the iodine exhaust fan and used for acquiring the state of the iodine exhaust fan and sending a first iodine exhaust signal when the iodine exhaust fan is in a closed state;
the iodine-free exhaust state acquisition module is connected with the iodine-free exhaust fan and the reactor plant ventilation system and used for acquiring the state of the iodine-free exhaust fan, acquiring whether the reactor plant ventilation system is in a working condition B or not and sending a first iodine-free exhaust signal when the reactor plant ventilation system is in a non-working condition B and the iodine-free exhaust fan is in a closed state;
the reactor plant ventilation system comprises a reactor plant ventilation system, an air supply state acquisition module and a control module, wherein the reactor plant ventilation system is used for ventilating a reactor plant, the air supply state acquisition module is respectively connected with the air supply device and the reactor plant ventilation system and is used for acquiring the state of the air supply device, the air supply state acquisition module is also used for acquiring whether the reactor plant ventilation system is in a working condition B or not and sending a first air supply signal when the reactor plant ventilation system;
the first negative pressure detection module is respectively connected with the air outlet of the air feeder, the iodine pollution-free area and the iodine pollution area and is used for respectively measuring first negative pressure and second negative pressure between the iodine pollution-free area, the iodine pollution area and the atmosphere;
the second negative pressure detection module is respectively connected with the iodine pollution-free area and is used for measuring a third negative pressure between the iodine pollution-free area and the iodine pollution-free area;
the control module is respectively connected with the iodine air exhaust state acquisition module, the iodine-free air exhaust state acquisition module, the air supply state acquisition module, the iodine exhaust fan, the iodine-free exhaust fan and the air supply fan, and is used for controlling the air supply fan to be in a closed state when receiving the first iodine air exhaust signal or the first iodine-free air exhaust signal; the control module is also used for controlling the iodine-free exhaust fan to be in a closed state when receiving the first iodine exhaust signal or the first air supply signal;
the working condition B refers to that one unit in the reactor factory ventilation system is in cold shutdown and the reactor factory ventilation system is polluted.
2. The control system of claim 1, further comprising:
the iodine pollution area simulation box is respectively connected with an outlet of the air feeder, an inlet of the iodine exhaust fan, the first negative pressure detection module and the second negative pressure detection module, and is used for simulating negative pressure between the iodine pollution area and the atmosphere;
the iodine pollution-free area simulation box is respectively connected with the outlet of the air feeder, the inlet of the iodine exhaust fan, the first negative pressure detection module and the second negative pressure detection module, and is used for simulating the negative pressure between the iodine pollution-free area and the atmosphere.
3. The control system of claim 1, wherein the iodine free exhaust blower comprises a No. 1 exhaust blower, a No. 2 exhaust blower, the blower comprises a No. 1 blower, a No. 2 blower, the first iodine free exhaust signal comprises a first iodine free exhaust signal A and a first iodine free exhaust signal B, the first supply signal comprises a first supply signal A and a first supply signal B;
the iodine-free exhaust state acquisition module is used for sending a first iodine-free exhaust signal A when the reactor plant ventilation and ventilation system is in a non-B working condition and the No. 1 exhaust fan is in a closed state; the iodine-free exhaust state acquisition module is used for sending a first iodine-free exhaust signal B when the reactor plant ventilation and ventilation system is in a non-B working condition and the No. 2 exhaust fan is in a closed state;
the air supply state acquisition module is used for sending a first air supply signal A when the reactor factory building ventilation and ventilation system is in a working condition B or the No. 1 air feeder is in a closed state; the air supply state acquisition module is used for sending a first air supply signal B when the reactor factory building ventilation and ventilation system is in a working condition B or the No. 2 air feeder is in a closed state;
the control module is used for respectively controlling the No. 1 exhaust fan, the No. 2 exhaust fan, the No. 1 blower and the No. 2 blower to be in a closed state when receiving the first iodine exhaust signal;
the control module is further used for controlling the blower No. 1 to be in a closed state when receiving the first iodine-free exhaust signal A, and controlling the blower No. 2 to be in a closed state when receiving the first iodine-free exhaust signal B;
the control module is also used for controlling the No. 1 exhaust fan to be in a closed state when receiving the first air supply signal A, and controlling the No. 2 exhaust fan to be in a closed state when receiving the first air supply signal B.
4. The control system of claim 3, wherein the blower further comprises a blower # 3, the iodine free exhaust blower further comprises an exhaust # 3, the first iodine free exhaust signal further comprises a first iodine free exhaust signal C, the first supply signal further comprises a first supply signal C;
the iodine-free exhaust state acquisition module is used for sending a first iodine-free exhaust signal C when the reactor plant ventilation system is in a non-B working condition and the No. 3 exhaust fan is in a closed state;
the air supply state acquisition module is used for sending a first air supply signal C when the reactor factory building ventilation system is in a working condition B or the No. 3 blower is in a closed state;
the control module is used for respectively controlling the No. 3 exhaust fan and the No. 3 blower to be in a closed state when receiving the first iodine exhaust signal;
the control module is also used for controlling the No. 3 blower to be in a closed state when receiving the first iodine-free exhaust signal C;
the control module is also used for controlling the No. 3 exhaust fan to be in a closed state when receiving the first air supply signal C.
5. The control system of claim 1, wherein the iodine exhaust fan comprises a No. 4 exhaust fan and a No. 5 exhaust fan, and the iodine exhaust state acquisition module is configured to send the first iodine exhaust signal when the No. 4 exhaust fan and the No. 5 exhaust fan are both in a closed state.
6. The control system of claim 1, wherein the control module further comprises an appliance switch, and the control module controls the blower or the iodine free exhaust fan to be in an off state through the electrical switch.
7. The control system of claim 1, further comprising a switch module coupled to the control module, the switch module configured to send a first on signal, a second on signal, a first off signal, and a second off signal to the control module;
the iodine-free exhaust state acquisition module is also used for sending a second iodine-free exhaust signal when the reactor factory building ventilation and ventilation system is in a working condition B, the iodine-free exhaust fan is in a closed state, or the iodine-free exhaust fan is in an open state;
the control module is further used for controlling the iodine-free exhaust fan to be in an open state when receiving the first opening signal, and the control module is further used for controlling the iodine-free exhaust fan to be in a close state when receiving the first closing signal;
the control module is further used for controlling the air blower to be in an open state when receiving the second opening signal and the second iodine-free exhaust signal, and the control module is further used for controlling the air blower to be in a closed state when receiving the second closing signal.
8. The control system of claim 7, wherein the switch module is further configured to send a first reset signal and a second reset signal;
the control module is also used for controlling the iodine-free exhaust fan to reset when receiving the first reset signal; the control module is also used for controlling the air feeder to reset when receiving the second reset signal;
after the iodine-free exhaust fan is reset, the control module controls the iodine-free exhaust fan through the first opening signal and the first closing signal, and after the air feeder is reset, the control module controls the air feeder through the second opening signal and the second closing signal.
9. The control system of claim 7, wherein the switch module comprises a first switch module for sending a first on signal and a first off signal, a second switch module for sending a second on signal and a second off signal, the first switch module being an iodine free exhaust fan on-site switch, the second switch module being a blower on-site switch.
10. The control system of claim 1, wherein the first negative pressure detection module comprises a first differential pressure warning module and the second negative pressure detection module comprises a second differential pressure warning module, the first differential pressure warning module being configured to issue a first differential pressure warning signal when the first negative pressure or the second negative pressure is less than or equal to 0.59 bar, the second differential pressure warning module being configured to issue a second differential pressure warning signal when the third negative pressure is less than or equal to 0.59 bar.
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| CN202020860619.0U CN212720114U (en) | 2020-05-20 | 2020-05-20 | Control system of ventilation system of nuclear auxiliary factory building |
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| CN202020860619.0U CN212720114U (en) | 2020-05-20 | 2020-05-20 | Control system of ventilation system of nuclear auxiliary factory building |
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