Method and device for determining intelligent control scheme of heating and ventilation system of nuclear power plant

Abstract

The invention discloses a method and a device for determining an intelligent control scheme of a heating and ventilation system of a nuclear power plant. The method comprises the following steps: determining functional requirements of each plant based on a heating and ventilation requirement table of each plant room of the nuclear power plant; determining the configuration condition of the heating and ventilation system in each plant according to the functional requirements; determining controlled equipment and monitoring point requirements corresponding to the heating and ventilation system according to the configuration condition; according to the functional requirements of the plant, the controlled equipment corresponding to the heating and ventilation system and the monitoring point requirements, generating a regular alternation control scheme of the configuration of the heating and ventilation system corresponding to each plant, an intelligent control scheme of the kernel safety equipment of the heating and ventilation system and the like; through the method and the device, automatic control of the heating and ventilation system can be realized, the reliability of the system is improved, and the system maintenance pressure is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of nuclear power plant control systems, and in particular to a method and device for determining an intelligent control scheme for a heating and ventilation system of a nuclear power plant. Background Art

[0002] With the rapid development of science and technology such as communication technology, computer technology, detection technology, automatic control technology and construction engineering technology, intelligent buildings have emerged. Intelligent building control systems are designed to improve the automatic control level of various types of electromechanical equipment in buildings, systematically manage interrelated equipment through network connections, give full play to the overall advantages and potential of equipment, improve equipment utilization, optimize the operating status and time of equipment, thereby extending the service life of equipment, reducing energy consumption, reducing the labor intensity and working hours of maintenance personnel, and achieving the purpose of improving reliability, advancement and economy. At present, there are a large number of air-conditioning units, fans, valves, electric heaters, cooling coils and other equipment in the HVAC system of nuclear power plants. They adopt an isolated single equipment control mode, the system automation level is not high, and operators need to operate single equipment. The operation is cumbersome and complicated, the control schemes of each system are not unified, and the operation and maintenance workload is large.

[0003] Existing patent CN118293497A discloses a control method, control device, HVAC equipment and storage medium for HVAC equipment. The method is used to improve the energy efficiency and reliability of direct expansion chillers. The method includes operating a fan assembly, switching to a return air cooling mode based on the current supply air temperature being greater than a preset supply air temperature and the fresh air dew point temperature being greater than a first preset temperature, switching to a fresh air cooling mode based on the current supply air temperature being greater than a preset supply air temperature, the fresh air dew point temperature being less than or equal to a first preset temperature and the fresh air dry bulb temperature of the HVAC equipment being greater than a second preset temperature, and switching to a return air mixed air cooling mode based on the current supply air temperature being greater than a preset supply air temperature, the fresh air dew point temperature being less than or equal to the first preset temperature and the fresh air dry bulb temperature being less than or equal to the second preset temperature; when the HVAC equipment is in the second cooling mode and the third cooling mode, the fresh air system participates in cooling the airflow.

[0004] Existing patent CN104764173A discloses a monitoring method for a HVAC system, which is used to display the operating status of the HVAC system on a 3D model in a specific form. The method includes the following steps: establishing a 3D HVAC system model based on a building information model BIM; obtaining actual operating parameters of the current HVAC system, and displaying the actual operating parameters of the HVAC system in the 3D HVAC system model; the HVAC system model has an actual shape and spatial distribution corresponding to the physical structure of the pipelines and equipment in the actual HVAC system.

[0005] In summary, the above two existing patents have not solved the problems of low automation level of control of HVAC system in nuclear power plants, cumbersome and complicated operation and single control mode. Summary of the invention

[0006] Based on the above technical problems, the present invention proposes a method and device for determining an intelligent control scheme for a nuclear power plant HVAC system, which solves the problems of low control automation level, cumbersome and complicated operation and single control mode of the nuclear power plant HVAC system.

[0007] To achieve the above object, the present invention proposes a method for determining an intelligent control scheme for a HVAC system of a nuclear power plant.

[0008] A method for determining an intelligent control scheme for a nuclear power plant HVAC system, the method comprising:

[0009] Determine the functional requirements of each plant room based on the HVAC demand table of each plant room in the nuclear power plant;

[0010] Determine the configuration of the HVAC system in each plant building based on functional requirements;

[0011] Determine the controlled equipment and monitoring point requirements for the HVAC system based on the configuration;

[0012] Based on the functional requirements of the factory buildings, the controlled equipment and monitoring point requirements of the HVAC system, an intelligent control solution for the HVAC system corresponding to each factory building is generated.

[0013] Furthermore, before determining the functional requirements of each plant room based on the HVAC demand table of each plant room in the nuclear power plant, it also includes:

[0014] Generate a HVAC demand table for each plant room in a nuclear power plant, which includes: temperature range of each plant room, relative humidity range, heating value of main equipment, operating status of main equipment, lighting load, wet load, exhaust gas emission, air quality requirements, radioactivity, explosion protection, and a combination of one or more requirements in special working conditions.

[0015] Furthermore, based on the HVAC demand table of each plant room in the nuclear power plant, the functional requirements of each plant room are determined, including:

[0016] Determine the functional requirements of each plant building in the nuclear power plant, including ventilation function, based on the temperature range requirements of each plant room and / or the heat requirements of the main equipment and / or the air quality requirements;

[0017] Determine the functional requirements of each plant building in the nuclear power plant, including air conditioning functions, based on the temperature range requirements, relative humidity range requirements and / or the heat generation requirements of the main equipment in each plant building;

[0018] Determine the functional requirements of each nuclear power plant building, including pressurization function, based on radioactivity requirements and / or special operating conditions;

[0019] Determine the functional requirements of each plant building in the nuclear power plant, including cooling functions, based on the temperature range requirements of each plant room and / or the heat generation requirements of the main equipment;

[0020] Determine the functional requirements of each plant building in the nuclear power plant, including heating functions, based on the temperature range requirements and / or special working conditions requirements of each plant room;

[0021] Determine the functional requirements of each nuclear power plant building including dehumidification function based on relative humidity range requirements and / or special operating conditions and / or air quality requirements;

[0022] Determine the functional requirements of each nuclear power plant building including humidification function based on relative humidity range requirements and / or special operating conditions and / or air quality requirements;

[0023] Determine the functional requirements of each nuclear power plant building, including purification function, based on radioactivity requirements and / or exhaust gas emission requirements;

[0024] Based on the explosion-proof requirements, the functional requirements of each plant building in a nuclear power plant include explosion-proof functions.

[0025] Furthermore, the configuration of the HVAC system in each plant is determined according to the functional requirements, including:

[0026] The ventilation function corresponds to the configuration of the HVAC system in the factory building, which is one or more of the following equipment: the supply fan, the exhaust fan, the fresh air unit, the return air fan, the fresh air regulating valve, the exhaust air regulating valve, the return air regulating valve, and the check valve;

[0027] The air conditioning function corresponds to the configuration of the HVAC system in the factory building, which is an air conditioning unit and a circulating cooling unit;

[0028] The pressurization function corresponds to the configuration of the HVAC system in the factory building, which is a pressurization fan and a differential pressure balancing valve;

[0029] The cooling function corresponds to the configuration of the HVAC system in the factory building, which is a refrigeration unit, cooling coil or air cooler, and the cooling coil is equipped with a cold water regulating valve;

[0030] The heating function corresponds to the HVAC system in the factory, which is equipped with a heating coil or an electric heater, and a hot water regulating valve is installed on the heating coil;

[0031] The dehumidification function corresponds to the configuration of the HVAC system in the factory building as a humidifier;

[0032] The purification function corresponds to the configuration of the HVAC system in the factory, which is one or more of the following equipment: filter, iodine adsorber, air purifier, circulating filter unit, electric isolation valve;

[0033] The explosion-proof function corresponds to the configuration of the HVAC system in the factory as an exhaust fan.

[0034] Furthermore, the controlled equipment corresponding to the HVAC system is determined according to the configuration, including: one or more devices including supply fan, exhaust fan, return air fan, booster fan, cold water regulating valve, hot water regulating valve, fresh air regulating valve, return air regulating valve, exhaust air regulating valve, electric heater, electric isolation valve, check valve, fresh air unit, air conditioning unit, circulating cooling unit, differential pressure balancing valve, refrigeration unit and circulating filtration unit.

[0035] Furthermore, the monitoring point requirements corresponding to the HVAC system are determined according to the configuration, including:

[0036] The monitoring point requirements for the supply and exhaust fans include one or more of the following monitoring requirements: supply air temperature monitoring, return air temperature monitoring, exhaust air temperature monitoring, room temperature monitoring, air volume monitoring, and wind speed monitoring;

[0037] The monitoring point requirements corresponding to the air conditioning unit include one or more monitoring requirements of supply air temperature monitoring, return air temperature monitoring, exhaust air temperature monitoring, room temperature monitoring, and room humidity monitoring;

[0038] The monitoring point requirements for the pressurized fan include duct air volume monitoring and / or room pressure monitoring;

[0039] The monitoring point requirements for cooling coils, air coolers, heating coils, and electric heaters include temperature monitoring;

[0040] The monitoring point requirements for humidifiers include humidity monitoring;

[0041] The monitoring point requirements for filters, iodine adsorbers and air purifiers include room radioactive dose monitoring and / or hazardous exhaust gas monitoring;

[0042] The monitoring point requirements for exhaust fans include hydrogen, oxygen and / or flammable gas monitoring.

[0043] Furthermore, the intelligent control scheme of the HVAC system includes a regular rotation scheme for one-in-one-standby equipment and a regular rotation scheme for three-in-one-standby equipment configured for the HVAC system. The regular rotation scheme for one-in-one-standby equipment of the HVAC system includes:

[0044] Determine whether the main device is in the startup state;

[0045] If the master device is in the startup state, the operation cycle of the master device is timed;

[0046] If the main device is not in the startup state, determine whether the backup device is in the startup state;

[0047] If the standby device is in the startup state, the operation cycle of the standby device is timed;

[0048] Determine whether the operation cycle of the main device or the backup device exceeds the preset operation cycle;

[0049] If the operation cycle exceeds the preset operation cycle, it is determined whether the main device is currently in the startup state;

[0050] If the primary device is in the startup state, switch to the backup device;

[0051] If the master device is not started, switch to the master device.

[0052] Furthermore, the three-in-one-standby equipment regular rotation plan includes:

[0053] Obtaining the operating status of the first device, the second device, and the third device;

[0054] If only one of the first device, the second device, and the third device is in an unstarted state, start the standby device;

[0055] The operation cycles of the three devices in the startup state are respectively timed;

[0056] Determine whether there is a device whose operation cycle is greater than a preset operation cycle;

[0057] If the operation cycle of a certain device is greater than the preset operation cycle, the device will be shut down and the device in the unstarted state will be rotated.

[0058] Furthermore, the intelligent control solution for the HVAC system also includes an intelligent control solution for the core safety equipment of the HVAC system. The intelligent control solution for the core safety equipment of the HVAC system includes:

[0059] Obtain nuclear safety automatic interlocking signals, nuclear safety manual control signals, non-nuclear safety automatic interlocking signals and non-nuclear safety manual control signals;

[0060] Inputting the nuclear safety automatic interlocking signal into the first NOT gate to perform a NOT operation and outputting a first operation result;

[0061] Inputting the nuclear safety manual control signal and the first operation result into the first AND gate for AND operation, and outputting the second operation result;

[0062] Inputting the nuclear safety manual control signal into the second NOT gate for NOT operation, and outputting a third operation result;

[0063] Inputting the first operation result, the third operation result and the non-nuclear safety automatic interlocking signal into the second AND gate for AND operation, and outputting a fourth operation result;

[0064] Inputting the non-nuclear safety automatic interlocking signal into the third NOT gate to perform a NOT operation, and outputting a fifth operation result;

[0065] Inputting the first operation result, the third operation result, the fifth operation result and the non-nuclear safety manual control signal into the third AND gate for AND operation, and outputting the sixth operation result;

[0066] The nuclear safety automatic interlock signal, the second operation result, the fourth operation result and the sixth operation result are input into the first OR gate for OR operation, and the seventh operation result is output to control the start or shutdown of the nuclear safety-level equipment.

[0067] To achieve the above object, the present invention proposes a device for determining an intelligent control scheme for a HVAC system of a nuclear power plant.

[0068] A device for determining an intelligent control scheme for a nuclear power plant HVAC system, comprising:

[0069] The first determination module is used to determine the functional requirements of each plant room based on the HVAC demand table of each plant room in the nuclear power plant;

[0070] The second determination module is used to determine the configuration of the HVAC system in each plant building according to functional requirements;

[0071] The third determination module is used to determine the controlled equipment and monitoring point requirements corresponding to the HVAC system according to the configuration;

[0072] The generation module is used to generate the intelligent control scheme of the HVAC system corresponding to each plant according to the functional requirements of the plant, the controlled equipment and monitoring point requirements of the HVAC system.

[0073] Furthermore, before determining the functional requirements of each plant room based on the HVAC demand table of each plant room in the nuclear power plant, it also includes:

[0074] Generate a HVAC demand table for each plant room in a nuclear power plant, which includes: temperature range of each plant room, relative humidity range, heating value of main equipment, operating status of main equipment, lighting load, wet load, exhaust gas emission, air quality requirements, radioactivity, explosion protection, and a combination of one or more requirements in special working conditions.

[0075] Furthermore, the first determining module is used to:

[0076] Determine the functional requirements of each plant building in the nuclear power plant, including ventilation function, based on the temperature range requirements of each plant room and / or the heat requirements of the main equipment and / or the air quality requirements;

[0077] Determine the functional requirements of each plant building in the nuclear power plant, including air conditioning functions, based on the temperature range requirements, relative humidity range requirements and / or the heat generation requirements of the main equipment in each plant building;

[0078] Determine the functional requirements of each nuclear power plant building, including pressurization function, based on radioactivity requirements and / or special operating conditions;

[0079] Determine the functional requirements of each plant building in the nuclear power plant, including cooling functions, based on the temperature range requirements of each plant room and / or the heat generation requirements of the main equipment;

[0080] Determine the functional requirements of each plant building in the nuclear power plant, including heating functions, based on the temperature range requirements and / or special working conditions requirements of each plant room;

[0081] Determine the functional requirements of each nuclear power plant building including dehumidification function based on relative humidity range requirements and / or special operating conditions and / or air quality requirements;

[0082] Determine the functional requirements of each nuclear power plant building including humidification function based on relative humidity range requirements and / or special operating conditions and / or air quality requirements;

[0083] Determine the functional requirements of each nuclear power plant building, including purification function, based on radioactivity requirements and / or exhaust gas emission requirements;

[0084] Based on the explosion-proof requirements, the functional requirements of each plant building in a nuclear power plant include explosion-proof functions.

[0085] Based on the above technical solution, the present invention has at least the following beneficial effects:

[0086] The present invention determines the functional requirements and HVAC system configuration of each plant building through the HVAC demand table of each plant room, and based on the functional requirements of the nuclear power plant building, the controlled equipment and monitoring point requirements in the HVAC system configuration, generates a regular rotation control plan for the HVAC system configuration corresponding to each plant building, an intelligent control plan for the nuclear safety equipment in the HVAC system, etc. Through this method and device, automatic control of the HVAC system can be achieved, the reliability of the system can be improved, and the maintenance pressure of the system can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0087] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0088] Figure 1 A flow chart of a method for determining an intelligent control scheme for a nuclear power plant HVAC system according to an embodiment of the present invention;

[0089] Figure 2 A HVAC demand table for some rooms in an electrical plant in a specific embodiment of the present invention;

[0090] Figure 3 A flowchart of the regular rotation plan for one-in-use and one-in-standby equipment in the HVAC system;

[0091] Figure 4A flowchart corresponding to the regular rotation plan of three-in-one-backup equipment in the HVAC system;

[0092] Figure 5 The priority control function logic diagram corresponding to the nuclear safety level function;

[0093] Figure 6 It is a partial one-key start sequential control flow chart of the auxiliary plant AX system in one embodiment of the present invention;

[0094] Figure 7 It is a partial one-key stop sequential control flow chart of the auxiliary plant AX system in one embodiment of the present invention;

[0095] Figure 8 The present invention is a schematic diagram of a device for determining an intelligent control scheme for a nuclear power plant HVAC system according to an embodiment of the present invention.

[0096] The above drawings include the following reference numerals:

[0097] 101, first NOT gate; 102, second NOT gate; 103, third NOT gate; 201, first AND gate; 202, second AND gate; 203, third AND gate; 300, first OR gate. DETAILED DESCRIPTION

[0098] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0099] The present invention is further described in detail below in conjunction with specific embodiments. These embodiments should not be construed as limiting the scope of protection claimed by the present invention.

[0100] Example

[0101] In order to solve the problems of low control automation level, complicated operation and single control mode of HVAC system in nuclear power plant, the present invention proposes a method and device for determining intelligent control scheme of HVAC system in nuclear power plant.

[0102] To achieve the above object, the present invention proposes a method for determining an intelligent control scheme for a HVAC system of a nuclear power plant.

[0103] like Figure 1 FIG. 4 is a flow chart of a method for determining an intelligent control scheme for a nuclear power plant HVAC system according to an embodiment of the present invention. The method comprises the following steps:

[0104] S1, determine the functional requirements of each plant room based on the HVAC demand table of each plant room in the nuclear power plant.

[0105] Furthermore, before determining the functional requirements of each plant room based on the HVAC demand table of each plant room in the nuclear power plant, it also includes: generating a HVAC demand table of each plant room in the nuclear power plant. Figure 2 The HVAC demand table for some rooms in an electrical plant in a specific embodiment of the present invention is shown in FIG. The HVAC demand table includes: the temperature range of each plant room, the relative humidity range, the calorific value of the main equipment, the operating status of the main equipment, the lighting load, the wet load, the exhaust gas emission, the air quality requirements, the radioactivity, the explosion-proof, the special working conditions ( Figure 2 It should be understood that the demand column in the HVAC demand table can select one or more combinations of the above demands according to actual conditions.

[0106] Furthermore, the functional requirements of each plant room in the nuclear power plant are determined based on the HVAC demand table of each plant room, including: (1) Based on the temperature range requirements of each plant room and / or the heat generation requirements of the main equipment and / or the air quality requirements, it is determined that the functional requirements of each plant room in the nuclear power plant include ventilation functions. Specifically, the ventilation volume can be calculated based on the heat generation of the main equipment in the room and the temperature difference between indoor and outdoor, or the ventilation volume required for the plant room can be determined based on the ventilation times in the air quality requirements, and then it can be determined whether the functional requirements of each plant room in the nuclear power plant include ventilation functions. The method for determining the ventilation volume required for the plant room based on the ventilation times in the air quality requirements is: room volume*ventilation times=ventilation volume.

[0107] (2) Based on the temperature range requirements, relative humidity range requirements and / or the heat generation requirements of each plant room, determine the functional requirements of each plant room in the nuclear power plant, including air conditioning functions. For example, under natural ventilation, when the indoor temperature requirements of 20-25℃ and humidity requirements of 40-60% cannot be met, such as the room temperature ≥35℃ and humidity ≥70% in summer, air conditioning function needs to be configured.

[0108] (3) Based on the radioactivity requirements and / or special working condition requirements, the functional requirements of each plant in the nuclear power plant shall include the pressurization function. For example, when the control room is required to maintain a positive pressure of 200Pa, the functional requirements of each plant in the nuclear power plant shall include the pressurization function.

[0109] (4) Based on the temperature range requirements of each plant room and / or the heat generation requirements of the main equipment, the functional requirements of each plant room of the nuclear power plant, including the cooling function, are determined. (5) Based on the temperature range requirements of each plant room and / or the special working condition requirements, the functional requirements of each plant room of the nuclear power plant, including the heating function, are determined; for example, the temperature requirement of some rooms containing special equipment is 25-40℃. When the temperature value is greater than the preset temperature requirement, the functional requirements are determined to include the cooling function; when it is less than the preset temperature requirement, the heating function is required.

[0110] (6) Based on the relative humidity range requirements and / or special operating conditions and / or air quality requirements, the functional requirements of each plant in the nuclear power plant are determined to include the dehumidification function; (7) Based on the relative humidity range requirements and / or special operating conditions and / or air quality requirements, the functional requirements of each plant in the nuclear power plant are determined to include the humidification function. For example, if the humidity requirement of a control room is 40-60%, when the humidity is greater than the preset humidity range, the functional requirements are determined to include the humidification function, and when the humidity is less than the preset humidity range, the functional requirements are determined to include the dehumidification function.

[0111] (8) Based on the radioactivity demand and / or exhaust gas emission demand, the functional requirements of each nuclear power plant building, including the purification function, are determined. For example, in the event of a nuclear accident, the radiation dose in some rooms will exceed the standard. When the radiation dose is ≥2.5E+02μGy / h, the functional requirements of each nuclear power plant building, including the purification function, are determined.

[0112] (9) Based on the explosion-proof requirements, the functional requirements of each plant in the nuclear power plant, including explosion-proof functions, must be determined. For example, when there is a risk of hydrogen leakage in the plant room, the explosion-proof function needs to be considered, such as when designing the ventilation system in the battery room.

[0113] According to the HVAC demand table, calculate the cooling load, heating load, air supply volume, exhaust volume, and plant room volume, and determine the functions that the HVAC system of each plant room should complete in combination with outdoor meteorological parameters, such as ventilation, air conditioning, pressurization, cooling, heating, dehumidification, humidification, purification, explosion-proof, etc. Figure 2 The HVAC demand table of the electrical plant LX shown in the figure shows that the electrical plant LX needs to meet all the above functions. Table 1 shows the functional requirements of each plant in a nuclear power plant determined in a specific embodiment of the present invention. Specifically, it includes the reactor plant RX, the electrical plant LX, the nuclear fuel plant KX, the nuclear auxiliary plant NX, the auxiliary plant AX and the spare cooling plant CX.

[0114] Table 1 Main equipment and functional requirements of each plant building in a nuclear power plant

[0115]

[0116]

[0117] S2. Determine the configuration of the HVAC system in each factory building based on functional requirements.

[0118] The HVAC system of a nuclear power plant plays an important role in the normal operation and environmental protection of the nuclear power plant. Its main functional requirements are: providing a comfortable environment for personnel to enter and work; creating safe environmental conditions for the normal operation of equipment; and controlling and limiting the emission of polluted air and gases.

[0119] Specifically, the ventilation function corresponds to the configuration of the HVAC system in the factory building, which is one or more of the supply fan, exhaust fan, fresh air unit, return air fan, fresh air regulating valve, exhaust air regulating valve, return air regulating valve, and check valve; the air conditioning function corresponds to the configuration of the HVAC system in the factory building, which is the air conditioning unit and the circulating cooling unit; the pressurization function corresponds to the configuration of the HVAC system in the factory building, which is the pressurization fan and the differential pressure balancing valve; the cooling function corresponds to the configuration of the HVAC system in the factory building, which is the refrigeration unit, cooling coil or cold air fan, and the cooling coil is equipped with a cold water regulating valve; the heating function corresponds to the configuration of the HVAC system in the factory building, which is the heating coil or electric heater, and the heating coil is equipped with a hot water regulating valve; the dehumidification function corresponds to the configuration of the HVAC system in the factory building, which is a humidifier; the purification function corresponds to the configuration of the HVAC system in the factory building, which is one or more of the filter, iodine adsorber, air purifier, circulating filter unit, and electric isolation valve; the explosion-proof function corresponds to the configuration of the HVAC system in the factory building, which is an exhaust fan.

[0120] In addition, the present invention also considers the following factors when determining the configuration of the HVAC system of a nuclear power plant: 1) The nuclear power plant building has no doors or windows, and a mechanical fresh air fan is configured for natural ventilation to exchange cold and hot loads; 2) Considering the special exhaust emission requirements and restrictions of the nuclear power plant, a centralized exhaust outlet is configured; 3) Considering the environmental requirements of special rooms in the nuclear power plant, it is necessary to improve the reliability of the HVAC system to meet uninterrupted operating conditions, and redundant equipment is configured; 4) In order to ensure the pressure difference in the room, supply and exhaust or pressurized fans are configured; 5) Air volume regulating valves or fresh air regulating valves, exhaust regulating valves or return air regulating valves are configured according to the room air volume requirements; 6) Under special working conditions of the nuclear power plant, the emergency breathing system also needs to be configured with a compression control tank and pipelines, and a pipeline electric isolation valve and an electric regulating valve are configured.

[0121] S3, determine the controlled equipment and monitoring point requirements corresponding to the HVAC system based on the configuration.

[0122] The filters, iodine adsorbers, air purifiers, cooling coils, hot water coils and other equipment in the HVAC system of a nuclear power plant are mechanical equipment, and there is no electric part that needs to be controlled. The controlled equipment corresponding to the HVAC system is determined according to the configuration, including: one or more equipment in the supply fan, exhaust fan, booster fan, cold water regulating valve, hot water regulating valve, fresh air regulating valve, return air regulating valve, exhaust air regulating valve, electric heater, electric isolation valve, check valve, fresh air unit, air conditioning unit and circulating filter unit.

[0123] Among them, the monitoring point requirements corresponding to the supply fan and exhaust fan include one or more monitoring requirements of supply air temperature monitoring, return air temperature monitoring, exhaust air temperature monitoring, room temperature monitoring, air volume monitoring, and wind speed monitoring; the monitoring point requirements corresponding to the air-conditioning unit include one or more monitoring requirements of supply air temperature monitoring, return air temperature monitoring, exhaust air temperature monitoring, room temperature monitoring, and room humidity monitoring; the monitoring point requirements corresponding to the booster fan include duct air volume monitoring and / or room pressure monitoring; the monitoring point requirements corresponding to the cooling coil, air cooler, heating coil, and electric heater include temperature monitoring; the monitoring point requirements corresponding to the humidifier include humidity monitoring; the monitoring point requirements corresponding to the filter, iodine adsorber and air purifier include room radioactive dose monitoring and / or harmful exhaust gas monitoring; the monitoring point requirements corresponding to the exhaust fan include hydrogen, oxygen and / or flammable gas monitoring.

[0124] In addition, various fan or motor protections also require fan motor bearing vibration temperature monitoring; the electric heater safety protection function requires high temperature monitoring; special equipment filter pipeline flow detection, chimney flow radiation dose monitoring, iodine adsorber flow monitoring and differential pressure monitoring; special areas or rooms require reactor pit top temperature and humidity monitoring, reactor pit top flow detection, concrete temperature monitoring, containment internal and external differential pressure monitoring, cooler upstream and downstream temperature monitoring, air flow direction monitoring, chimney flow radiation dose monitoring, etc.

[0125] S4, based on the functional requirements of the factory building, the controlled equipment and monitoring point requirements of the HVAC system, generate an intelligent control solution for the HVAC system corresponding to each factory building.

[0126] The intelligent control schemes for the HVAC systems corresponding to the various plant buildings generated by the present invention mainly include: regular rotation control of the HVAC system configuration, intelligent control schemes for the HVAC system's internal safety equipment, enthalpy value adjustment control and mode switching of the HVAC system, one-button start-stop sequence control, and adaptive PID adjustment control. The specific contents of each control scheme will be introduced in detail below.

[0127] In order to reduce the probability of equipment damage, reduce equipment maintenance pressure, and improve system reliability, a regular rotation plan for one-in-use and one-backup equipment and a regular rotation plan for three-in-use and one-backup equipment are designed for HVAC system configuration. Figure 3 The flowchart of the one-in-use and one-in-standby equipment regular rotation scheme for the HVAC system is shown in Figure 3 As shown, the process includes the following steps:

[0128] S401, determining whether the main device is in a startup state.

[0129] S402: If the master device is in the startup state, the operation cycle of the master device is timed.

[0130] S403: If the main device is not in the startup state, determine whether the backup device is in the startup state.

[0131] S404: If the standby device is in the startup state, the operation cycle of the standby device is timed.

[0132] S405, determining whether the operation cycle of the main device or the backup device exceeds a preset operation cycle.

[0133] S406: If the operation cycle exceeds the preset operation cycle, determine whether the main device is currently in a startup state.

[0134] S407: If the main device is in the startup state, switch to the backup device.

[0135] S408: If the master device is in an unstarted state, switch to the master device.

[0136] like Figure 4 The flowchart corresponding to the three-in-one-standby equipment regular rotation scheme is shown in FIG. 1 , and the flow mainly includes the following steps:

[0137] S410, obtaining the operating status of the first device, the second device, and the third device.

[0138] S411: If only one of the first device, the second device, and the third device is in an unstarted state, start the backup device.

[0139] S412, timing the operation cycles of the three devices in the startup state respectively.

[0140] S413, determining whether there is a device whose operation cycle is greater than a preset operation cycle.

[0141] S414: If the operation cycle of a certain device is greater than the preset operation cycle, the device is shut down and a device in an unstarted state is rotated.

[0142] Considering that some nuclear island plant HVAC system functions are nuclear safety functions, the main nuclear safety functions include realizing the startup control of the emergency ventilation subsystem under accident conditions, isolating the control of the normal ventilation system; realizing the filtration and purification of the room and maintaining the positive and negative pressure control of the room when the radiation dose exceeds the standard; realizing the control and monitoring of related equipment such as the habitability of the main control room. The above-mentioned nuclear safety level functions must realize the highest priority control function, and the corresponding priority control function logic diagram is as follows Figure 5 As shown. Combined Figure 5 Generally speaking, the intelligent control solution for the core safety equipment of the HVAC system is as follows:

[0143] Obtain a nuclear safety automatic interlock signal, a nuclear safety manual control signal, a non-nuclear safety automatic interlock signal and a non-nuclear safety manual control signal; input the nuclear safety automatic interlock signal to the first NOT gate 101 for a NOT operation, and output a first operation result; input the nuclear safety manual control signal and the first operation result to the first AND gate 201 for an AND operation, and output a second operation result; input the nuclear safety manual control signal to the second NOT gate 102 for a NOT operation, and output a third operation result; input the first operation result, the third operation result and the non-nuclear safety automatic interlock signal to the second AND gate 202 for an AND operation, and output a fourth operation result; input the non-nuclear safety automatic interlock signal to the third NOT gate 103 for a NOT operation, and output a fifth operation result; input the first operation result, the third operation result, the fifth operation result and the non-nuclear safety manual control signal to the third AND gate 203 for an AND operation, and output a sixth operation result; input the nuclear safety automatic interlock signal, the second operation result, the fourth operation result and the sixth operation result to the first OR gate 300 for an OR operation, and output a seventh operation result, which is used to control the start or shutdown of nuclear safety-level equipment.

[0144] Regarding the operation mode switching control scheme of the HVAC system, based on the functional requirements of the plant, the controlled equipment and monitoring point requirements corresponding to the HVAC system, the operation mode switching control scheme of the HVAC system corresponding to each plant is generated, including: monitoring the outdoor enthalpy value and temperature of the room corresponding to the HVAC system; switching the operation mode of the HVAC system according to the outdoor enthalpy value and the temperature change, and accurately controlling the room temperature and humidity. The operation modes include minimum fresh air mode, maximum fresh air mode, variable fresh air mode, emergency cooling mode, emergency breathing mode and intelligent prediction mode.

[0145] Among them, the minimum fresh air mode is used to adjust the chilled water and the heater to meet the room requirements when the outdoor enthalpy value is greater than the preset enthalpy value and the temperature is less than the preset temperature. Specifically, the preset enthalpy value can be set to 38kJ / kg, and the preset temperature can be set to 0°C; the maximum fresh air mode is used to shut down the chilled water and the heater when the outdoor enthalpy value is less than the preset enthalpy value; the variable fresh air mode is used to operate the chilled water or the heater at the lowest power when the change rate of the outdoor enthalpy value is greater than the preset change rate, and adjust the fresh air valve / exhaust valve / return air valve to meet the room requirements; the emergency cooling mode (which is a unique working mode of nuclear power plants. In the event of a nuclear accident, the ventilation of some rooms in some areas must be cut off, and only the core area or room is retained ventilation demand in rooms), which is used to ensure the maximum allowable temperature of important rooms by only a small amount of ventilation or cooling, so that the HVAC system is maintained in a state of minimum energy consumption; the emergency breathing mode (which is a working mode unique to nuclear power plants. When a larger nuclear accident occurs, the ventilation demand required for the safety of personnel's lives must be guaranteed. Through temperature, humidity and CO2 detection, the compressed air pipeline is started to control and adjust the ventilation system), which is used to ensure that the carbon dioxide concentration in the rooms where personnel can stay does not exceed the standard by only a small amount of fresh air, so that the HVAC system is maintained in a state of minimum energy consumption; the intelligent prediction mode is a self-learning or adaptive working mode of the control system, which is used to predict the baseline operating mode of the HVAC system based on the accumulated operating data or outdoor meteorological parameters over the years.

[0146] The startup process of the maximum fresh air mode, the minimum fresh air mode, and the variable fresh air mode can be summarized as follows: determine whether the fire damper or the isolation valve is fully open; if the fire damper or the isolation valve is fully open, determine whether the opening of the fresh air regulating valve, the opening of the exhaust regulating valve, and the opening of the return air regulating valve all meet the preset opening range; if the opening of the fresh air regulating valve, the opening of the exhaust regulating valve, and the opening of the return air regulating valve all meet the preset opening range, then the corresponding mode runs successfully. It should be understood that the maximum fresh air mode, the minimum fresh air mode, and the variable fresh air mode have different preset valve opening ranges. The preset valve opening range for the maximum fresh air mode is 90%-100%, the preset valve opening range for the minimum fresh air mode is 0-10%, and the preset valve opening range for the variable fresh air mode is 10%-90%.

[0147] Regarding the one-button start-stop sequential control solution, the present invention sets a "one-button start" button to sequentially start the system equipment by designing the sequential control logic of the equipment; and sets a "one-button stop" button to stop the operation of the system equipment. Figure 6 , Figure 7 Part of the one-key start sequential control flow chart and part of the one-key stop sequential control flow chart of the auxiliary plant AX system are shown respectively.

[0148] Regarding the adaptive PID control scheme, the principle of adaptive PID control is: according to the system error (i.e. the difference between the expected value and the actual value), the control quantity is adjusted through the calculation of proportional, integral and derivative links to achieve the control target. The functions of the supply and return air temperature and humidity control, enthalpy value control, fresh air valve, return air valve and exhaust valve opening control, fan air volume control, etc. of the present invention are all realized by applying the adaptive PID control scheme.

[0149] To achieve the above object, the present invention proposes a device for determining an intelligent control scheme for a HVAC system of a nuclear power plant.

[0150] like Figure 8 , a schematic diagram of a device for determining an intelligent control scheme for a nuclear power plant HVAC system is shown, the device comprising: a first determination module 801, a second determination module 802, a third determination module 803 and a generation module 804. The functions of each module will be described in detail below.

[0151] The first determination module 801 is used to determine the functional requirements of each plant room based on the HVAC requirement table of each plant room in the nuclear power plant.

[0152] Furthermore, before determining the functional requirements of each plant room based on the HVAC demand table of each plant room in the nuclear power plant, it also includes:

[0153] Generate a HVAC demand table for each plant room in a nuclear power plant, which includes: temperature range of each plant room, relative humidity range, heating value of main equipment, operating status of main equipment, lighting load, wet load, exhaust gas emission, air quality requirements, radioactivity, explosion protection, and a combination of one or more requirements in special working conditions.

[0154] Further, the first determining module 801 is used to:

[0155] Determine the functional requirements of each plant building in the nuclear power plant, including ventilation function, based on the temperature range requirements of each plant room and / or the heat requirements of the main equipment and / or the air quality requirements;

[0156] Determine the functional requirements of each plant building in the nuclear power plant, including air conditioning functions, based on the temperature range requirements, relative humidity range requirements and / or the heat generation requirements of the main equipment in each plant building;

[0157] Determine the functional requirements of each nuclear power plant building, including pressurization function, based on radioactivity requirements and / or special operating conditions;

[0158] Determine the functional requirements of each plant building in the nuclear power plant, including cooling functions, based on the temperature range requirements of each plant room and / or the heat generation requirements of the main equipment;

[0159] Determine the functional requirements of each plant building in the nuclear power plant, including heating functions, based on the temperature range requirements and / or special working conditions requirements of each plant room;

[0160] Determine the functional requirements of each nuclear power plant building including dehumidification function based on relative humidity range requirements and / or special operating conditions and / or air quality requirements;

[0161] Determine the functional requirements of each nuclear power plant building including humidification function based on relative humidity range requirements and / or special operating conditions and / or air quality requirements;

[0162] Determine the functional requirements of each nuclear power plant building, including purification function, based on radioactivity requirements and / or exhaust gas emission requirements;

[0163] Based on the explosion-proof requirements, the functional requirements of each plant building in a nuclear power plant include explosion-proof functions.

[0164] The second determination module 802 is used to determine the configuration of the HVAC system in each factory building according to the functional requirements.

[0165] The third determination module 803 is used to determine the controlled equipment and monitoring point requirements corresponding to the HVAC system according to the configuration situation.

[0166] The generation module 804 is used to generate an intelligent control solution for the HVAC system corresponding to each plant building according to the functional requirements of the plant building, the controlled equipment and monitoring point requirements of the HVAC system.

[0167] It should be understood that the description of a device for determining an intelligent control scheme for a nuclear power plant HVAC system is consistent with the description of a corresponding method for determining an intelligent control scheme for a nuclear power plant HVAC system, so this embodiment will not be repeated.

[0168] In summary, it can be seen from the above description that the above embodiments of the present invention achieve the following technical effects:

[0169] The present invention determines the functional requirements and HVAC system configuration of each plant building through the HVAC demand table of each plant room, and based on the functional requirements of the nuclear power plant building, the controlled equipment and monitoring point requirements in the HVAC system configuration, generates a regular rotation control plan for the HVAC system configuration corresponding to each plant building, an intelligent control plan for the nuclear safety equipment in the HVAC system, etc. Through this method and device, automatic control of the HVAC system can be achieved, the reliability of the system can be improved, and the maintenance pressure of the system can be reduced.

[0170] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0171] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0172] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, which can be embodied in any computer-readable medium for use by an instruction execution system, apparatus or device (such as a computer-based system, a system including a processor or other system that can fetch instructions from an instruction execution system, apparatus or device and execute instructions), or used in combination with these instruction execution systems, apparatuses or devices.

[0173] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, a plurality of steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0174] It should be noted that, in the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

Claims

1. A method for determining an intelligent control scheme for a nuclear power plant HVAC system, characterized in that: include: Determine the functional requirements of each plant room based on the HVAC demand table of each plant room in the nuclear power plant; Determine the configuration of the HVAC system in each factory building according to the functional requirements; Determine the controlled equipment and monitoring point requirements corresponding to the HVAC system according to the configuration; According to the functional requirements of the plant, the controlled equipment and monitoring point requirements of the HVAC system, an intelligent control solution for the HVAC system corresponding to each plant is generated.

2. The method according to claim 1, characterized in that Before determining the functional requirements of each plant based on the HVAC demand table of each plant room in the nuclear power plant, it also includes: Generate a HVAC demand table for each plant room in a nuclear power plant, the HVAC demand table including: a temperature range of each plant room, a relative humidity range, the heating value of main equipment, the operating status of main equipment, lighting load, wet load, exhaust gas emission, air quality requirements, radioactivity, explosion protection, and a combination of one or more requirements of special working conditions.

3. The method according to claim 2, characterized in that Based on the HVAC demand table of each plant room in the nuclear power plant, the functional requirements of each plant room are determined, including: Determine the functional requirements of each plant building of the nuclear power plant, including ventilation function, based on the temperature range requirements of each plant building room and / or the heat generation requirements of the main equipment and / or the air quality requirements; Determining the functional requirements of each plant room of the nuclear power plant, including air conditioning function, based on the temperature range requirements of each plant room, the relative humidity range requirements and / or the heating requirements of the main equipment; Determining the functional requirements of each plant building in the nuclear power plant including the pressurization function based on the radioactivity requirements and / or the special working condition requirements; Determining the functional requirements of each plant room of the nuclear power plant including cooling function based on the temperature range requirements of each plant room and / or the heating requirements of the main equipment; Determining the functional requirements of each plant room of the nuclear power plant including a heating function based on the temperature range requirements of each plant room and / or the special working condition requirements; Determining the functional requirements of each plant building in the nuclear power plant including a dehumidification function based on the relative humidity range requirements and / or the special operating conditions and / or the air quality requirements; Determining the functional requirements of each plant building in the nuclear power plant including a humidification function based on the relative humidity range requirements and / or the special operating conditions and / or the air quality requirements; Determining the functional requirements of each plant in the nuclear power plant including purification function based on the radioactivity requirements and / or the exhaust gas emission requirements; Based on the explosion-proof requirements, it is determined that the functional requirements of each plant building in the nuclear power plant include explosion-proof function.

4. The method according to claim 3, characterized in that Determine the configuration of the HVAC system in each plant building according to the functional requirements, including: The ventilation function corresponds to the configuration of the HVAC system in the factory building, which is one or more devices selected from the group consisting of a supply fan, an exhaust fan, a fresh air unit, a return air fan, a fresh air regulating valve, an exhaust air regulating valve, a return air regulating valve, and a check valve; The air conditioning function corresponds to the configuration of the HVAC system in the factory building, which is an air conditioning unit and a circulating cooling unit; The pressurization function corresponds to the configuration of the HVAC system in the factory building, which is a pressurization fan and a differential pressure balancing valve; The cooling function corresponds to the configuration of the HVAC system in the factory building, which is a refrigeration unit, a cooling coil or a cold air blower, and the cooling coil is equipped with a cold water regulating valve; The heating function corresponds to the configuration of the HVAC system in the factory building, which is a heating coil or an electric heater, and the heating coil is equipped with a hot water regulating valve; The dehumidification function corresponds to the configuration of the HVAC system in the factory building as a humidifier; The purification function corresponds to the configuration of the HVAC system in the factory building, which is one or more devices selected from the group consisting of a filter, an iodine adsorber, an air purifier, a circulating filter unit, and an electric isolation valve; The explosion-proof function corresponds to the configuration of the HVAC system in the factory building as an exhaust fan.

5. The method according to claim 4, characterized in that The controlled equipment corresponding to the HVAC system is determined according to the configuration, including: one or more devices selected from the group consisting of a supply fan, an exhaust fan, a return air fan, a pressurized fan, a cold water regulating valve, a hot water regulating valve, a fresh air regulating valve, a return air regulating valve, an exhaust air regulating valve, an electric heater, an electric isolation valve, a check valve, a fresh air unit, an air conditioning unit, a circulating cooling unit, a differential pressure balancing valve, a refrigeration unit and a circulating filter unit.

6. The method according to claim 4, characterized in that Determining the monitoring point requirements corresponding to the HVAC system according to the configuration conditions includes: The monitoring point requirements for the supply and exhaust fans include one or more of the following monitoring requirements: supply air temperature monitoring, return air temperature monitoring, exhaust air temperature monitoring, room temperature monitoring, air volume monitoring, and wind speed monitoring; The monitoring point requirements corresponding to the air conditioning unit include one or more monitoring requirements of supply air temperature monitoring, return air temperature monitoring, exhaust air temperature monitoring, room temperature monitoring, and room humidity monitoring; The monitoring point requirements for the pressurized fan include duct air volume monitoring and / or room pressure monitoring; The monitoring point requirements for cooling coils, air coolers, heating coils, and electric heaters include temperature monitoring; The monitoring point requirements for humidifiers include humidity monitoring; The monitoring point requirements for filters, iodine adsorbers and air purifiers include room radioactive dose monitoring and / or hazardous exhaust gas monitoring; The monitoring point requirements for exhaust fans include hydrogen, oxygen and / or flammable gas monitoring.

7. The method according to any one of claims 1 to 6, characterized in that: The intelligent control scheme of the HVAC system includes a regular rotation scheme of one-in-one-standby equipment and a regular rotation scheme of three-in-one-standby equipment configured for the HVAC system. The regular rotation scheme of one-in-one-standby equipment of the HVAC system includes: Determine whether the main device is in the startup state; If the master device is in a startup state, timing the operation cycle of the master device; If the main device is not in the startup state, determining whether the backup device is in the startup state; If the standby device is in a startup state, timing the operation cycle of the standby device; Determining whether the operation cycle of the main device or the backup device exceeds a preset operation cycle; If the operation cycle exceeds the preset operation cycle, determining whether the main device is currently in a startup state; If the main device is in the startup state, switch to the backup device; If the master device is in an unstarted state, switch to the master device.

8. The method according to claim 7, characterized in that The three-in-one-standby equipment regular rotation plan includes: Obtaining the operating status of the first device, the second device, and the third device; If only one of the first device, the second device, and the third device is in an unstarted state, start the backup device; The operation cycles of the three devices in the startup state are respectively timed; Determine whether there is a device whose operation cycle is greater than a preset operation cycle; If the operation cycle of a certain device is greater than the preset operation cycle, the device is shut down and the device in the unstarted state is rotated.

9. The method according to claim 7, characterized in that: The intelligent control scheme of the HVAC system also includes an intelligent control scheme for the core safety equipment in the HVAC system. The intelligent control scheme for the core safety equipment in the HVAC system includes: Obtain nuclear safety automatic interlocking signals, nuclear safety manual control signals, non-nuclear safety automatic interlocking signals and non-nuclear safety manual control signals; Inputting the nuclear safety automatic interlocking signal into a first NOT gate to perform a NOT operation, and outputting a first operation result; Inputting the nuclear safety manual control signal and the first operation result into a first AND gate for AND operation, and outputting a second operation result; Inputting the nuclear safety manual control signal into the second NOT gate to perform a NOT operation, and outputting a third operation result; Inputting the first operation result, the third operation result and the non-nuclear safety automatic interlocking signal into a second AND gate for AND operation, and outputting a fourth operation result; Inputting the non-nuclear safety automatic interlocking signal into the third NOT gate for NOT operation, and outputting a fifth operation result; Inputting the first operation result, the third operation result, the fifth operation result and the non-nuclear safety manual control signal into a third AND gate for AND operation, and outputting a sixth operation result; The nuclear safety automatic interlock signal, the second operation result, the fourth operation result and the sixth operation result are input into the first OR gate for OR operation, and the seventh operation result is output to control the start or shutdown of nuclear safety-level equipment.

10. A device for determining an intelligent control scheme for a nuclear power plant HVAC system, characterized in that: include: The first determination module is used to determine the functional requirements of each plant room based on the HVAC demand table of each plant room in the nuclear power plant; A second determination module is used to determine the configuration of the HVAC system in each factory building according to the functional requirements; A third determination module is used to determine the controlled equipment and monitoring point requirements corresponding to the HVAC system according to the configuration; The generation module is used to generate an intelligent control solution for the HVAC system corresponding to each factory building according to the functional requirements of the factory building, the controlled equipment and monitoring point requirements corresponding to the HVAC system.

11. The device according to claim 10, characterized in that Before determining the functional requirements of each plant based on the HVAC demand table of each plant room in the nuclear power plant, it also includes: Generate a HVAC demand table for each plant room in a nuclear power plant, the HVAC demand table including: a temperature range of each plant room, a relative humidity range, the heating value of main equipment, the operating status of main equipment, lighting load, wet load, exhaust gas emission, air quality requirements, radioactivity, explosion protection, and a combination of one or more requirements of special working conditions.

12. The device according to claim 11, characterized in that The first determining module is used to: Determine the functional requirements of each plant building of the nuclear power plant, including ventilation function, based on the temperature range requirements of each plant building room and / or the heat generation requirements of the main equipment and / or the air quality requirements; Determining the functional requirements of each plant room of the nuclear power plant, including air conditioning function, based on the temperature range requirements of each plant room, the relative humidity range requirements and / or the heating requirements of the main equipment; Determining the functional requirements of each plant building in the nuclear power plant including the pressurization function based on the radioactivity requirements and / or the special working condition requirements; Determining the functional requirements of each plant room of the nuclear power plant including cooling function based on the temperature range requirements of each plant room and / or the heating requirements of the main equipment; Determining the functional requirements of each plant room of the nuclear power plant including a heating function based on the temperature range requirements of each plant room and / or the special working condition requirements; Determining the functional requirements of each plant building in the nuclear power plant including a dehumidification function based on the relative humidity range requirements and / or the special operating conditions and / or the air quality requirements; Determining the functional requirements of each plant building in the nuclear power plant including a humidification function based on the relative humidity range requirements and / or the special operating conditions and / or the air quality requirements; Determining the functional requirements of each plant in the nuclear power plant including purification function based on the radioactivity requirements and / or the exhaust gas emission requirements; Based on the explosion-proof requirements, it is determined that the functional requirements of each plant building in the nuclear power plant include explosion-proof function.

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