CN114049977B - Remote control method and device for ventilation system for critical device - Google Patents
Remote control method and device for ventilation system for critical device Download PDFInfo
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- CN114049977B CN114049977B CN202111471082.4A CN202111471082A CN114049977B CN 114049977 B CN114049977 B CN 114049977B CN 202111471082 A CN202111471082 A CN 202111471082A CN 114049977 B CN114049977 B CN 114049977B
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- 238000009423 ventilation Methods 0.000 title claims abstract description 116
- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000005855 radiation Effects 0.000 claims abstract description 27
- 230000002159 abnormal effect Effects 0.000 claims abstract description 24
- 230000005856 abnormality Effects 0.000 claims abstract description 11
- 238000001914 filtration Methods 0.000 claims description 11
- 238000001514 detection method Methods 0.000 claims description 7
- 239000000758 substrate Substances 0.000 claims 3
- 238000007789 sealing Methods 0.000 description 9
- 230000002452 interceptive effect Effects 0.000 description 7
- 238000002474 experimental method Methods 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000011045 prefiltration Methods 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000007257 malfunction Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002285 radioactive effect Effects 0.000 description 2
- 239000000941 radioactive substance Substances 0.000 description 2
- 239000000443 aerosol Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21D—NUCLEAR POWER PLANT
- G21D1/00—Details of nuclear power plant
- G21D1/02—Arrangements of auxiliary equipment
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/06—Devices or arrangements for monitoring or testing fuel or fuel elements outside the reactor core, e.g. for burn-up, for contamination
- G21C17/07—Leak testing
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21D—NUCLEAR POWER PLANT
- G21D3/00—Control of nuclear power plant
- G21D3/04—Safety arrangements
- G21D3/06—Safety arrangements responsive to faults within the plant
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Abstract
A remote control method of a ventilation system for critical devices, the ventilation system comprising a normal ventilation system and an accident exhaust system, comprising the steps of: detecting the operation state of a critical device, wherein the operation state of the critical device comprises normal operation of the critical device and abnormality of the critical device; when the critical device normally operates, a first control instruction is received to start the normal ventilation system; and when the critical device is abnormal, receiving a second control instruction to stop running the normal ventilation system and simultaneously start the accident exhaust system, wherein when the power of the critical device is greater than a first preset threshold value and/or the radiation dose is greater than a second preset threshold value, the critical device is abnormal. The remote control method of the ventilation system for the critical device can realize remote control of the ventilation system, avoid staff from running back and forth between a machine room where the ventilation system is located and a control room, and improve operation convenience and working efficiency.
Description
Technical Field
The invention relates to the technical field of critical devices, in particular to a remote control method and device of a ventilation system for a critical device.
Background
Currently, a ventilation system for a critical device (or a zero-power reactor) is arranged at a position far away from a control room, before an experiment is carried out, a worker needs to go to a machine room where the ventilation system is positioned to manually open a normal ventilation system, and after the experiment is finished, the worker manually closes the normal ventilation system. When the critical device is abnormal, the worker also needs to manually start the accident exhaust system. Thus, the control of the ventilation system is inconvenient for the staff.
Disclosure of Invention
The embodiment of the invention provides a remote control method and device of a ventilation system for a critical device.
The remote control method of the ventilation system for the critical device, which is provided by the embodiment of the invention, comprises a normal ventilation system and an accident exhaust system, and comprises the following steps of: detecting the operation state of a critical device, wherein the operation state of the critical device comprises normal operation of the critical device and abnormality of the critical device; when the critical device normally operates, a first control instruction is received to start the normal ventilation system; and when the critical device is abnormal, receiving a second control instruction to stop running the normal ventilation system and simultaneously start the accident exhaust system, wherein when the power of the critical device is greater than a first preset threshold value and/or the radiation dose is greater than a second preset threshold value, the critical device is abnormal.
The invention relates to a remote control device of a ventilation system for a critical device, the ventilation system comprises a normal ventilation system and an accident exhaust system, and the remote control device comprises: the detection part is used for detecting the operation state of the critical device, wherein the operation state of the critical device comprises normal operation of the critical device and abnormality of the critical device; a processor configured to perform the following operations: when the critical device normally operates, a first control instruction is received to start the normal ventilation system; and when the critical device is abnormal, receiving a second control instruction to stop running the normal ventilation system and simultaneously start the accident exhaust system, wherein when the power of the critical device is greater than a first preset threshold value and/or the radiation dose is greater than a second preset threshold value, the critical device is abnormal.
According to the remote control method and the remote control device for the ventilation system for the critical device, disclosed by the embodiment of the invention, the ventilation system is supported to be controlled remotely by a worker, so that the worker is prevented from running back and forth between a machine room where the ventilation system is positioned and a control room, and the operation convenience and the working efficiency are improved; and moreover, the critical device is judged to be abnormal according to the power and/or radiation dose of the critical device, so that the accident exhaust system is started, the control accuracy of the ventilation system is improved, and the operation safety of the critical device is improved.
Additional aspects and advantages of embodiments of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
fig. 1 is a schematic flow chart of a remote control method of a ventilation system for a critical device according to an embodiment of the present invention.
Fig. 2 is a schematic structural view of a normal ventilation system according to an embodiment of the present invention.
Fig. 3 is a schematic structural view of an accident exhaust system according to an embodiment of the present invention.
Fig. 4 is a schematic structural view of a remote control device of a ventilation system for a critical device according to an embodiment of the present invention.
Fig. 5 is a schematic diagram of a display portion of the device of fig. 4.
Fig. 6 is a schematic view of an operating portion of the device of fig. 4.
It should be noted that the drawings are not necessarily to scale, but are merely shown in a schematic manner that does not affect the reader's understanding.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present invention, unless explicitly stated and limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, or may include both the first and second features not being in direct contact but being in contact by another feature therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.
Referring to fig. 1 to 3, a remote control method of a ventilation system for a critical device according to an embodiment of the present invention includes steps S101, S103 and S105. Based on the control of steps S101, S103 and S105, the normal ventilation system or the accident exhaust system is controlled.
As shown in fig. 1, in step S101, the operation state of the critical device is detected, which includes normal operation of the critical device and occurrence of abnormality of the critical device.
Specifically, different ventilation systems are required for the critical device under different operation states, for example, a normal ventilation system is used when the critical device is operating normally, and an accident exhaust system is used when the critical device is abnormal. By detecting the operation state of the critical device, whether the normal ventilation system or the accident exhaust system is required to be used at present can be judged.
Normally, the normal ventilation system is first activated before (or just before) the critical apparatus performs the experiment. During the operation of the critical device, the operation state of the critical device is detected in real time so as to accurately use a normal ventilation system or an accident exhaust system and improve the control accuracy of the ventilation system.
Next, in step S103, when the critical device is operating normally, a first control command is received to turn on the normal ventilation system.
In particular, the present invention may remotely control the ventilation system, which may be controlled by, for example, a PLC. In some embodiments, when the critical device is detected to be operating normally, a first control instruction may be received, such as through an interactive interface, and then the first control is executed by the controller or processor to turn on the normal ventilation system. The first control command is, for example, a command to turn on a normal ventilation system. The first control instruction may be issued by an operator.
Next, in step S105, when the critical device is abnormal, a second control command is received to stop operating the normal ventilation system and simultaneously to turn on the accident exhaust system, wherein when the power of the critical device is greater than the first preset threshold and/or the radiation dose is greater than the second preset threshold, the critical device is abnormal.
Specifically, when an abnormality of the critical device is detected, a second control instruction may be received, such as through an interactive interface, and then the second control is performed by the controller or the processor to shut down the normal ventilation system while turning on the accident exhaust system. The second control command is, for example, a command to turn on the accident exhaust system. The second control instruction may be issued by an operator. It will be appreciated that only one of the accident vent system and the normal vent system is allowed to operate at the same time.
In order to enable the use time of the accident exhaust system to be accurate, the embodiment of the invention provides the judgment condition for the use of the accident exhaust system. I.e. when the power of the critical device is greater than a first preset threshold and/or the radiation dose is greater than a second preset threshold, the accident venting system is activated. The accident exhaust system is started, so that the operation hall of the critical device can be ensured to be in a negative pressure state, and radioactive substances are prevented from being discharged to the surrounding environment, thereby reducing the damage to the environment and personnel.
In certain embodiments, the method of remote control of a ventilation system for a critical device further comprises detecting a radiation dose within a preset range of the critical device, the radiation dose comprising a neutron dose and/or a gamma dose.
Specifically, the critical device is disposed, for example, in a critical device operating hall, and the critical device preset range is, for example, a range of a preset distance from a core thereof, and in some embodiments, a range formed with the core as a center and the preset distance as a radius. The radiation dose within the preset range of the critical device is detected and can be used as a condition for judging the starting of the accident exhaust system.
In some embodiments, an abnormality in the critical device is indicated when the intermediate sub-dose is greater than a second preset threshold, at which point the accident vent system may be activated. In other embodiments, when the gamma dose is greater than a second preset threshold, an abnormality in the critical device is indicated, at which point the accident vent system may be activated.
It should be noted that, in the case where the neutron dose is greater than the second preset threshold and the gamma dose is greater than the second preset threshold, the values of the second preset threshold are different. For example, when the medium dose is greater than 100mSv/h, or when the gamma dose is greater than 10mSv/h, the accident vent system may be activated.
In some embodiments, when the critical device operating power is greater than a first preset threshold, an abnormal radiation dose will result, at which point the accident exhaust system needs to be activated. For example, when the critical device operating power is greater than 20W, the neutron dose is greater than 100mSv/h, or the gamma dose is greater than 10mSv/h.
Additionally, in certain embodiments, the accident vent system is activated when radiation leakage occurs such that the neutron dose is greater than a second preset threshold or the gamma dose is greater than a second preset threshold.
Referring to fig. 2 and 3, a simplified schematic diagram of a normal ventilation system and an accident exhaust system is shown.
As shown in fig. 2, the normal ventilation system includes an air supply system 10, a first air exhaust system 20, and a second air exhaust system 30. The air supply system 10 comprises an air supply pipeline 11, an air quantity regulating valve 12, a primary air filter 13, a high-efficiency air filter 14 and a fan 15. When the air supply system 10 works, air is sucked by a fan 15, is transmitted through an air supply pipeline 11, is filtered by a primary air filter 13 and a high-efficiency air filter 14 and then is sent to a critical device operation hall, and an air quantity regulating valve 12 can be used for regulating air quantity.
The first exhaust system 20 includes a first exhaust line 21, a first electrically operated shut-off valve 22, a first primary filter 23, a first high efficiency filter 24, and a first fan 25. The second exhaust system 30 includes a second exhaust line 31, a second electrically operated shut-off valve 32, a second primary filter 33, a second high efficiency filter 34, and a second fan 35.
As shown in fig. 2, taking the first exhaust system 20 as an example, when the first exhaust system 20 is operated, the first electric sealing valve 22 and the first fan 25 are opened, and the exhaust air is transmitted through the first exhaust pipe 21, filtered through the first primary filter 23 and the first high efficiency filter 24, and then discharged through the chimney 40.
Further, as shown in fig. 2, the normal ventilation system further includes a third duct 51 having one end connected to the critical device operating hall and the other end connected to the first exhaust duct 21 or the second exhaust duct 31. The normal ventilation system further includes a third electrically powered sealing valve 52, and when the first exhaust system 20 or the second exhaust system 30 is operated, the third electrically powered sealing valve 52 needs to be opened first, and then the first electrically powered sealing valve 22 or the second electrically powered sealing valve 32 is opened to form a communication pipeline. It will be appreciated that the third electrically powered latching valve 52 may be closed directly when it is desired to close the normal ventilation system.
As shown in fig. 3, the accident exhaust system includes a fourth exhaust duct 61, a fourth electric sealing valve 62, a prefilter 63, a high efficiency filter 64, a post-high efficiency filter 65, and a fourth fan 66. The exhaust air is filtered by the prefilter 63, the hepa filter 64 and the post hepa filter 65 and then discharged through the stack 70.
It should be noted that each filter of the normal ventilation system or the accident exhaust system may have different filtering effects, for example, to prevent radioactive dust or radioactive aerosol from being discharged into the environment. The exhaust air is discharged after being filtered, so that the radioactivity level can be reduced, and the harm to the environment and personnel is reduced. The types and the number of the filters can be adjusted according to the actual requirements, and are not limited to those exemplified in the above embodiments.
In some embodiments, the accident vent system may further comprise an adsorber to further purify the vent.
In some embodiments, the normal ventilation system or the accident vent system may further include a manual control valve to allow an operator to manually open/close the ventilation system.
In some embodiments, when the critical device is operating normally, receiving the first control command to turn on the normal ventilation system includes: simultaneously starting the air supply system 10 and the first exhaust system 20; or both the air supply system 10 and the second air exhaust system 30 may be turned on.
It will be appreciated that the air supply system and the air exhaust system operate simultaneously when the critical device is operating normally. Wherein the air supply amount may be smaller than the air exhaust amount. For example, the air supply amount is 65-85% of the air discharge amount.
In some embodiments, the method for remotely controlling a ventilation system for a critical device further comprises: according to the switching rules, the first exhaust system 20 and the second exhaust system 30 are controlled to switch operation.
Specifically, two exhaust systems are arranged, so that when one exhaust system fails, the other exhaust system can be timely put into use.
In some embodiments, controlling the first exhaust system and the second exhaust system to switch operation according to the switching rules comprises: after the first exhaust system 20 is operated for a first preset time, the first exhaust system 20 is turned off, and the second exhaust system 30 is turned on. In other embodiments, after the second exhaust system 30 is operated for a second preset time, the second exhaust system 30 is turned off while the first exhaust system 20 is turned on.
The first preset time and the second preset time may be the same or different. Alternatively, the first preset time and the second preset time are each four hours, i.e., the first exhaust system 20 and the second exhaust system 30 are alternately operated once every four hours. By automatically switching between the first exhaust system 20 and the second exhaust system 30, the problem that any exhaust system is prone to failure when working for a long time can be avoided, and thus the reliability of the overall operation of the normal ventilation system is improved.
It will be appreciated that the first exhaust system 20 and the second exhaust system 30 are standby for each other, and operate alternately according to the switching rules, so that the failure probability can be reduced.
In some embodiments, controlling the first exhaust system and the second exhaust system to switch operation according to the switching rules comprises: when the pressure difference of the filtering means of the first exhaust system 20 is greater than the first preset pressure, the first exhaust system 20 is turned off, and the second exhaust system 30 is turned on.
Specifically, as shown in fig. 2, whether or not a malfunction occurs can be judged by detecting the pressure difference before and after the filtering device. For example, when the differential pressure of the first primary filter 23 is greater than the first preset pressure, or the differential pressure of the first high efficiency filter 24 is greater than the first preset pressure, a filter failure is indicated, at which time the first exhaust system 20 needs to be closed and the second exhaust system 30 is operated to maintain the normal operation of the critical device. The operator can then replace the failed filter.
It should be noted that, in the case where the differential pressure of the first primary filter 23 is greater than the first preset pressure and the differential pressure of the first efficient filter 24 is greater than the first preset pressure, the values of the first preset pressures may be different.
In other embodiments, when the pressure difference of the filtering device of the second exhaust system 30 is greater than the second preset pressure, the second exhaust system 30 is turned off, and the first exhaust system 20 is turned on. For example, when the differential pressure of the second primary filter 33 is greater than the second preset pressure, or when the differential pressure of the second high efficiency filter 34 is greater than the second preset pressure, a filter failure is indicated, at which time the second exhaust system 30 needs to be turned off and the first exhaust system 20 is operated to maintain the normal operation of the critical device. The operator can then replace the failed filter.
By detecting the pressure difference of the filtering device, faults can be found in time so as to switch the standby exhaust system in time, thereby improving the operation reliability.
In some embodiments, controlling the first exhaust system and the second exhaust system to switch operation according to the switching rules comprises: the fan operating temperature of the first exhaust system 20 is detected, and when the fan operating temperature of the first exhaust system 20 exceeds a first preset temperature, the first exhaust system 20 is turned off, and the second exhaust system 30 is turned on.
Specifically, the working temperature of the fan can be detected to prevent any exhaust system from malfunctioning or timely switch the standby exhaust system when the malfunction occurs.
In other embodiments, the fan operating temperature of the second exhaust system 30 is detected, and when the fan operating temperature of the second exhaust system 30 exceeds a second preset temperature, the second exhaust system 30 is turned off while the first exhaust system 20 is turned on.
According to the invention, whether any exhaust system fails or not can be detected, and the exhaust system is automatically switched to the standby exhaust system when the exhaust system fails, so that the overall operation time of the ventilation system is increased, the experiment is carried out by maintaining the critical device, and the working efficiency is improved.
In some embodiments, the accident exhaust system is also provided with two exhaust systems which are standby. When the air exhaust system works, the air supply system is in a closed state. Similarly, when one of the exhaust systems fails, the other exhaust system can be automatically switched to. The accident exhaust systems which are standby to each other can also be switched in time-sharing, for example, every four hours.
In certain embodiments, an alarm is provided when the pressure differential across the filters of the normal ventilation system or the accident vent system is greater than a preset alarm threshold.
The remote control method of the ventilation system for the critical device improves operation convenience and working efficiency. The critical device is judged to be abnormal according to the power and/or radiation dose of the critical device, so that the accident exhaust system is started, the control accuracy of the ventilation system is improved, radioactive substances can be effectively prevented from being discharged into the environment, and the damage to the environment and personnel is reduced.
The remote control method of the ventilation system for the critical device is suitable for the critical device or the zero-power reactor, and provides convenience for the experiment of the critical device.
The remote control method of the ventilation system for the critical device of the embodiment of the invention can be also applied to other research type reactors, for example, for a pool type reactor, whether the accident exhaust system is started or not can be judged by detecting reactor accidents or abnormalities, for example, abnormal heat exhaust of the reactor caused by rupture of a primary loop steam pipeline or a secondary loop steam pipeline, and the control accuracy of the ventilation system is improved.
Referring to fig. 4 to 6, a remote control device 1000 of a ventilation system for a critical device according to an embodiment of the present invention includes a normal ventilation system and an accident exhaust system, including: a detection unit 200 for detecting an operation state of the critical device, wherein the operation state of the critical device includes normal operation of the critical device and abnormality of the critical device; a processor 300 arranged to: when the critical device normally operates, a first control instruction is received to start a normal ventilation system; and when the critical device is abnormal, receiving a second control instruction to stop operating the normal ventilation system and simultaneously start the accident exhaust system, wherein when the power of the critical device is greater than a first preset threshold value and/or the radiation dose is greater than a second preset threshold value, the critical device is abnormal.
In particular, the present invention may remotely control the ventilation system, which may be controlled by, for example, a PLC. For example, when the critical device is detected to be operating normally by the detecting part 200, the first control instruction may be received through, for example, an interactive interface, and then the first control is performed by the processor 300 to turn on the normal ventilation system. The first control command is, for example, a command to turn on a normal ventilation system. The first control instruction may be issued by an operator. Alternatively, when the critical device is detected to be abnormal by the detecting part 200, the second control command may be received through, for example, an interactive interface, and then the second control is performed by the processor 300 to turn off the normal ventilation system while turning on the accident exhaust system. The second control command is, for example, a command to turn on the accident exhaust system. The second control instruction may be issued by an operator. It will be appreciated that only one of the accident vent system and the normal vent system is allowed to operate at the same time.
In certain embodiments, the detection portion 200 is further configured to detect radiation doses within a preset range of the threshold device, the radiation doses including neutron doses and/or gamma doses; the radiation dose being greater than a second preset threshold comprises: the neutron dose is greater than a second preset threshold, or the gamma dose is greater than the second preset threshold.
In some embodiments, the detecting portion 200 is further configured to detect a critical device power, which when greater than a first preset threshold, will cause an abnormal radiation dose, at which time the processor 300 may control the enabling of the accident vent system. Therefore, the invention provides the judgment conditions for the use of the accident exhaust system, and can improve the control accuracy of the ventilation system.
In some embodiments, the detecting portion 200 is further configured to detect a pressure differential across a filtering device of the ventilation system, and the processor 300 is further configured to provide an alarm when the pressure differential satisfies a preset condition.
In particular, reference may be made to the schematic structural diagram of the normal ventilation system or the accident exhaust system of fig. 2 or 3. The preset condition may be, for example, any of the following: the differential pressure of the primary air filter 13 is greater than a preset pressure threshold; the pressure differential across the HEPA filter 14 is greater than a preset pressure threshold; the differential pressure of the first primary filter 23 is greater than a preset pressure threshold; the differential pressure of the first high efficiency filter 24 is greater than a preset pressure threshold; the differential pressure of the second primary filter 33 is greater than a preset pressure threshold; the pressure differential across the second high efficiency filter 34 is greater than a preset pressure threshold; the pressure differential across the prefilter 63 is greater than a preset pressure threshold; the pressure differential across the high efficiency filter 64 is greater than a preset pressure threshold; the pressure differential across the post-efficiency filter 65 is greater than a preset pressure threshold.
In some embodiments, the detecting portion 200 is further configured to detect an operating temperature of a fan of the ventilation system, and the processor 300 is further configured to provide an alarm when the operating temperature satisfies a preset condition.
In particular, reference may be made to the schematic structural diagram of the normal ventilation system or the accident exhaust system of fig. 2 or 3. The preset condition may be, for example, any of the following: the operating temperature of the blower 15 exceeds a preset temperature threshold; the operating temperature of the first blower 25 exceeds a preset temperature threshold; the operating temperature of the second fan 35 exceeds a preset temperature threshold; the operating temperature of the fourth fan 66 exceeds a preset temperature threshold.
In some embodiments, the remote control device 1000 of the ventilation system for critical devices further includes: a display section 400 configured to display: the working state of a normal ventilation system or an accident exhaust system; and/or neutron dose, gamma dose; and/or an alarm indication.
Specifically, referring to fig. 2 or 3, when the normal ventilation system or the accident exhaust system is operated, the display part 400 displays its operating state. In some embodiments, when the normal ventilation system is operating, for example, when the first ventilation system 20 is currently operating, the display unit 400 may display that the third electrically-operated sealing valve 52, the first electrically-operated sealing valve 22, and the first fan 25 are in an open state, and display that the second electrically-operated sealing valve 32 and the second fan 35 are in a closed state. The display section 400 may also display the pressure difference of the first primary filter 23 and/or the first high efficiency filter 24. Meanwhile, the display unit 400 also displays the state of the air blowing system 10, for example, the state in which the air volume control valve 12 and the blower 15 are opened, and also displays the differential pressure of the primary air filter 13 and/or the high-efficiency air filter 14.
In other embodiments, the display 400 may display the fourth electrically powered latching valve 62 and the fourth blower 66 in an open condition when the accident vent system is in operation. The display 400 may also display the pressure differential of the pre-filter 63, the high efficiency filter 64, and/or the post-high efficiency filter 65.
For example, when the normal ventilation system is started, the filter pressure difference, the fan and the valve related to the normal ventilation system can be displayed by the display part 400, that is, the fan and the valve are slowly opened at this time, and the filter pressure difference is slowly increased to a certain value from 0 Pa; when the normal ventilation system is closed, the pressure difference of each filter is slowly reduced to 0Pa, and the fan and the valve are slowly closed.
Further, as shown in fig. 5, the display unit 400 may further display the current neutron dose 401 and/or gamma dose 402 within the preset range of the critical device. The display 400 may also display the current power 403 of the critical device. By displaying the power and/or radiation dose level of the critical device in real time, the critical device is convenient for a worker to judge whether the critical device is abnormal or not in time, so that the accident exhaust system can be started in time.
Further, as shown in fig. 5, the display unit 400 may also display an alarm instruction. The alarm indication may be, for example, an alarm indication lamp, for example, when the neutron dose is greater than 100mSv/h, the neutron dose alarm indication lamp 411 lights up a red lamp and blinks. When the gamma dose is greater than 10mSv/h, the gamma dose alarm indicator light 412 lights up and blinks. It will be appreciated that different alarm indications may be set for different alarm content. When the intermediate dose alarm indicator lights are on and flash or the gamma dose alarm indicator lights are on and flash, namely the radiation dose of the critical device operating hall is overlarge, the critical device can be judged to be abnormal, at the moment, the system can automatically cut off a normal ventilation system and simultaneously automatically start an accident exhaust system, so that operators can be reminded to take measures.
In some embodiments, the remote control device 1000 of the ventilation system for critical devices further includes: an operation unit 500 configured to: starting or closing a normal ventilation system; and/or to activate or deactivate the accident exhaust system; and/or setting a neutron dose alarm threshold or a gamma dose alarm threshold; and/or setting an alarm threshold value of the working temperature of each fan of the ventilation system; and/or setting an alarm threshold for the pressure difference of the individual filter devices of the ventilation system.
In particular, the operator may provide input or instructions through, for example, an interactive interface. As shown in fig. 6, the operation part 500 may include a normal ventilation system start button 510 and a normal ventilation system shut-off button 511, and an operator may provide a first control instruction by operating the normal ventilation system start button 510 or an operator may provide an instruction to shut off the normal ventilation system by operating the normal ventilation system shut-off button 511.
The operation part 500 may further include an accident vent system start button 520 and an accident vent system shut-off button 521, and the operator may provide a second control instruction by operating the accident vent system start button 520 or the operator may provide an instruction to shut off the accident vent system by operating the accident vent system shut-off button 521.
The operation portion 500 may also include setting keys, such as a neutron dose alarm threshold setting key 531, a gamma dose alarm threshold setting key 532, a fan operating temperature alarm threshold setting key 533, and/or a filter differential pressure alarm threshold setting key 534.
It will be appreciated that the interactive interface may have touch screen functionality, in which case the operator may operate with a finger or pen. Of course, the interactive interface may also have a non-touch screen function, in which case the operator may operate via a mouse, for example. The operation member is not limited to the form of the above-described button or key, but may be other forms, for example, the threshold value is adjusted by a slider.
In the description of the present specification, reference to the terms "one embodiment," "certain embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (11)
1. A remote control method of a ventilation system for a critical apparatus, the ventilation system including a normal ventilation system and an accident exhaust system, comprising the steps of:
detecting the operation state of a critical device, wherein the operation state of the critical device comprises normal operation of the critical device and abnormality of the critical device;
when the critical device normally operates, a first control instruction is received to start the normal ventilation system;
when the critical device is abnormal, a second control instruction is received to stop running the normal ventilation system and simultaneously start the accident exhaust system, wherein when the power of the critical device is greater than a first preset threshold value and/or the radiation dose is greater than a second preset threshold value, the critical device is abnormal;
the normal ventilation system comprises an air supply system, a first exhaust system and a second exhaust system;
when the critical device normally operates, receiving a first control instruction to start the normal ventilation system, wherein the normal ventilation system comprises:
simultaneously starting the air supply system and the first exhaust system; or alternatively
Simultaneously starting the air supply system and the second exhaust system;
detecting radiation dose within a preset range of the critical device, wherein the radiation dose comprises neutron dose and/or gamma dose;
the radiation dose being greater than a second preset threshold comprises: the neutron dose is greater than the second preset threshold or the gamma dose is greater than the second preset threshold.
2. The method as recited in claim 1, further comprising:
and controlling the first exhaust system and the second exhaust system to switch operation according to the switching rule.
3. The method of claim 2, wherein the step of determining the position of the substrate comprises,
and controlling the switching operation of the first exhaust system and the second exhaust system according to the switching rule comprises the following steps:
after the first exhaust system runs for a first preset time, closing the first exhaust system, and simultaneously opening the second exhaust system; or alternatively
And after the second exhaust system operates for a second preset time, closing the second exhaust system, and simultaneously opening the first exhaust system.
4. The method of claim 2, wherein the step of determining the position of the substrate comprises,
the first exhaust system or the second exhaust system includes: the device comprises a closed valve, a filtering device and a fan, wherein the closed valve and the fan are opened when exhaust air is exhausted, and the exhaust air is exhausted through a chimney after passing through the filtering device;
and controlling the switching operation of the first exhaust system and the second exhaust system according to the switching rule comprises the following steps:
when the pressure difference of the filtering device of the first exhaust system is larger than a first preset pressure, closing the first exhaust system, and simultaneously opening the second exhaust system; or alternatively
And when the pressure difference of the filtering device of the second exhaust system is larger than a second preset pressure, closing the second exhaust system and simultaneously opening the first exhaust system.
5. The method of claim 2, wherein the step of determining the position of the substrate comprises,
and controlling the switching operation of the first exhaust system and the second exhaust system according to the switching rule comprises the following steps:
detecting the working temperature of a fan of the first air exhaust system, closing the first air exhaust system when the working temperature of the fan of the first air exhaust system exceeds a first preset temperature, and simultaneously opening the second air exhaust system; or alternatively
And detecting the working temperature of the fan of the second air exhaust system, closing the second air exhaust system when the working temperature of the fan of the second air exhaust system exceeds a second preset temperature, and simultaneously opening the first air exhaust system.
6. The method according to any one of claims 1 to 5, wherein,
the accident vent system comprises at least one filter,
the method further comprises the steps of: providing an alarm when the pressure differential across at least one of the filters is greater than a preset alarm threshold.
7. A remote control device for a ventilation system for critical devices, the ventilation system comprising a normal ventilation system and an accident exhaust system, comprising:
the detection part is used for detecting the operation state of the critical device, wherein the operation state of the critical device comprises normal operation of the critical device and abnormality of the critical device;
a processor configured to perform the following operations:
when the critical device normally operates, a first control instruction is received to start the normal ventilation system;
when the critical device is abnormal, a second control instruction is received to stop running the normal ventilation system and simultaneously start the accident exhaust system, wherein when the power of the critical device is greater than a first preset threshold value and/or the radiation dose is greater than a second preset threshold value, the critical device is abnormal;
the detection part is further arranged to detect radiation doses within a preset range of the critical device, wherein the radiation doses comprise neutron doses and/or gamma doses;
the radiation dose being greater than a second preset threshold comprises: the neutron dose is greater than the second preset threshold or the gamma dose is greater than the second preset threshold.
8. The apparatus of claim 7, wherein the device comprises a plurality of sensors,
the detection part is further configured to detect a pressure difference of a filtering device of the ventilation system, and the processor is further configured to provide an alarm when the pressure difference satisfies a preset condition.
9. The apparatus of claim 7, wherein the device comprises a plurality of sensors,
the detection part is further configured to detect an operating temperature of a fan of the ventilation system, and the processor is further configured to provide an alarm when the operating temperature satisfies a preset condition.
10. The apparatus as recited in claim 7, further comprising:
a display section configured to display:
the working state of the normal ventilation system or the accident exhaust system; and/or
The neutron dose, the gamma dose; and/or
And (5) an alarm indication.
11. The apparatus according to any one of claims 7-10, further comprising: an operation section configured to:
starting or closing the normal ventilation system; and/or
Starting or closing the accident exhaust system; and/or
Setting the neutron dose alarm threshold or the gamma dose alarm threshold; and/or
Setting an alarm threshold value of the working temperature of each fan of the ventilation system; and/or
An alarm threshold value for the pressure difference of each filter device of the ventilation system is set.
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