Online monitoring system and emergency data collection and analysis device for nuclear power plant containment leakage rate

Abstract

The present invention relates to an online monitoring system and an emergency collection and analysis device for the leakage rate of a containment of a nuclear power plant. The emergency collection and analysis device comprises a collection box and an analysis machine connected to each other. The collection box comprises: an access module for accessing signals; a collection module for collecting access signals; a voltage and current transducer module; a switching module for sending the pressure signal to the voltage and current transducer module and then to the collection module when the pressure signal is a voltage-type analog signal; and directly sending the pressure signal to the collection module when the pressure signal is a current-type analog signal; the analysis machine comprises: an input module for receiving the current power plant / unit identification; an import module for receiving historical collection data; a processing module for analyzing the leakage of the containment, and associating the analysis result with the current power plant / unit identification; and an output module for outputting the associated analysis result. The technical solution of the present invention has strong mobility and can be applied to different power plants and different units, thus realizing continuous monitoring of the leakage of the containment.

Description

Technical Field

[0001] The present invention relates to the field of nuclear power, and in particular to an online monitoring system for leakage rate of a containment of a nuclear power plant and an emergency collection and analysis device. Background Art

[0002] Radioactivity will exist during the operation of nuclear power plants. As a building that contains these radioactive materials, the sealing performance of the containment must be guaranteed. In nuclear power plants that use pneumatic valves in the containment, some compressed air will be released into the containment due to the operation of the pneumatic valves, causing the pressure in the containment to continue to rise. When the pressure reaches a certain limit, the radioactive gas is purified by a high-efficiency filter / iodine adsorber after testing and then discharged into the environment. Because the containment cannot be completely sealed, some radioactive gases will leak into the environment through the penetrations of the containment. In order to protect the environment and the public, during the normal operation of the nuclear power unit, the gas parameters in the containment need to be collected and the leakage situation needs to be analyzed and calculated to ensure that the amount of leakage from the containment to the environment through the penetrations is within the regulatory range.

[0003] The online monitoring system for daily containment leakage rate is a dedicated system for monitoring containment leakage during normal operation of nuclear power plants. Figure 1 The online monitoring system for daily leakage rate of containment shown in the figure includes an acquisition and analysis cabinet EPP002AR and a signal integration cabinet EPP001AR, wherein the acquisition and analysis cabinet EPP002AR is composed of several acquisition boards, cages, industrial computers (including software), displays, printers, time synchronization hubs, power modules, air switches, terminal blocks, fans, indicator lights and other equipment, and the acquisition boards continuously collect compressed air injection flow, atmospheric pressure and temperature, humidity, pressure and other parameters in the containment through the signal channel of the signal integration cabinet EPP001AR, and then send them to the software of the industrial computer for calculation to output the leakage rate of the containment to the environment to realize the monitoring function. The EPP002AR acquisition and analysis cabinet is fixed inside the plant, and its size is about 1000mm×1000mm×2000mm, and each unit is equipped with one acquisition and analysis cabinet.

[0004] The EPP002AR data acquisition and analysis cabinet has the advantages of high data acquisition accuracy, fast speed, comprehensive board functions, and stable operation of industrial computers, but it also has the following problems:

[0005] 1. The collection and analysis cabinet is composed of a standard cabinet, which is large in size and cannot be moved after installation;

[0006] 2. Due to the large time span of batch construction of nuclear power units, the data collection and analysis cabinets are from different suppliers or different versions from the same supplier, and the data collection and analysis are implemented in different ways, resulting in the hardware and software being incompatible between units, and the cabinets can only be used in the unit to which they belong;

[0007] 3. When the hardware or software in the collection and analysis cabinet fails and cannot be repaired in the short term, the containment leakage rate will lose monitoring;

[0008] 4. When the cabinet is restarted due to a fault or the software is put back into use, it is necessary to enter the initialization phase (5 days). During this phase, the containment leakage rate cannot be calculated and the monitoring of containment leakage will be lost. Summary of the invention

[0009] The technical problem to be solved by the present invention is to provide an online monitoring system for the leakage rate of a nuclear power plant containment and an emergency collection and analysis device in view of the above-mentioned defects in the prior art.

[0010] The technical solution adopted by the present invention to solve the technical problem is: construct an emergency collection and analysis device for the leakage rate of the containment of a nuclear power plant, including a collection box and an analysis machine connected to each other, wherein:

[0011] The collection box comprises:

[0012] Access module, used to access the external atmospheric pressure signal and compressed air flow signal outside the containment, and access the temperature signal, humidity signal and internal pressure signal inside the containment through the signal integration cabinet;

[0013] A collection module, used for collecting the temperature signal, the humidity signal, the pressure signal inside the shell, the atmospheric pressure signal outside the shell, and the compressed air flow signal to generate current collection data;

[0014] Voltage and current transmitter module;

[0015] A switching module, for, according to a switching signal input by a user, when the pressure signal inside the shell and the atmospheric pressure signal outside the shell are voltage-type analog signals, first sending them to the voltage-current transducer module to convert them into current-type analog signals, and then sending them to the acquisition module; when the pressure signal inside the shell and the atmospheric pressure signal outside the shell are current-type analog signals, directly sending them to the acquisition module;

[0016] The analysis machine comprises:

[0017] An input module, used to receive the current power station identifier and the current unit identifier input by the user;

[0018] Import module, used to receive historical collection data imported by users;

[0019] A processing module, used for analyzing the leakage of the containment according to the historical collected data and the current collected data output by the collection module, and associating the analysis result with the current power plant identifier and the current unit identifier;

[0020] The output module is used to output the analysis results after correlation.

[0021] Preferably, the access module includes:

[0022] A plurality of first connectors, respectively used to access the temperature signal in the containment through the signal integration cabinet;

[0023] The acquisition module comprises:

[0024] The resistance temperature acquisition board is connected to the plurality of first connectors and is used to acquire the temperature signal.

[0025] Preferably, the access module includes:

[0026] A plurality of second connectors, used for accessing an external atmospheric pressure signal outside the containment shell, and for accessing an internal pressure signal inside the containment shell through a signal integration cabinet;

[0027] The acquisition module comprises:

[0028] An analog quantity acquisition board, used for acquiring the pressure signal inside the shell and the atmospheric pressure signal outside the shell;

[0029] The voltage and current transducer module includes a plurality of voltage and current transducers corresponding one to one with each second connector;

[0030] The switching module includes a plurality of selection switches corresponding to each second connector one by one, and the input end of the selection switch is connected to the corresponding second connector, the first selection end of the selection switch is connected to the input end of the corresponding voltage and current transmitter, and the second selection end of the selection switch and the output end of the voltage and current transmitter are connected to the corresponding input end of the analog quantity acquisition board.

[0031] Preferably, the access module includes:

[0032] A plurality of third connectors, used for accessing the humidity signal in the containment through the signal integration cabinet;

[0033] A fourth connector, used for accessing a compressed air flow signal outside the containment vessel;

[0034] and,

[0035] The analog quantity acquisition board is also used to collect the humidity signal and the compressed air flow signal.

[0036] Preferably, the first connector, the second connector, the third connector and the fourth connector are all JAEGER connectors.

[0037] Preferably, the collection box further comprises:

[0038] Power input module, used to access AC mains;

[0039] The voltage conversion module is used to convert the AC mains into a 12V / 24V DC voltage and supply power to the acquisition module.

[0040] Preferably, the collection box further comprises:

[0041] Power output module, used to output 12V / 24V DC voltage.

[0042] Preferably, the collection box further comprises:

[0043] The first RJ45 interface;

[0044] A first network module, used for converting the current collected data output by the collection module into a network signal, and transmitting it to the analysis machine through a first RJ45 interface;

[0045] The analysis machine also includes:

[0046] Second RJ45 interface;

[0047] The second network module is used to convert the network signal received through the second RJ45 interface into current collection data.

[0048] Preferably, the collection box includes a box body, which includes a box body main body provided with a accommodating cavity and a box cover connected to the box body for opening and closing. Moreover, a roller is provided on one side of the box body, and a handle is provided on the other side of the box body. The access module, the collection module, the voltage and current transmission module and the switching module are arranged in the accommodating cavity.

[0049] Preferably, a cage is provided in the accommodating cavity of the box body, a panel is provided on the upper end surface of the cage, and the access module is provided on the panel, and a fixing part for fixing the acquisition module and the voltage and current transmitter module is provided inside the cage.

[0050] The present invention also constructs an online monitoring system for the leakage rate of a nuclear power plant containment, comprising:

[0051] A plurality of temperature sensors, a humidity sensor, and a first pressure sensor are arranged in the containment vessel;

[0052] A second pressure sensor and a compressed air flow meter are arranged outside the containment;

[0053] A signal integration cabinet connected to the temperature sensor, the humidity sensor, and the first pressure sensor; and,

[0054] The emergency collection and analysis device described above.

[0055] The technical solution provided by the present invention has the following beneficial effects:

[0056] 1. The emergency data collection and analysis device of the present invention eliminates unnecessary printers, time synchronization hubs and other large, high-power, and expensive equipment, so it is not only low-cost, short-term, and low-power, but also small in size and highly mobile, and can be easily moved to the required unit. When the hardware or software in the existing data collection and analysis cabinet fails and cannot be repaired in the short term, the emergency data collection and analysis device of the present invention can be used to replace the existing data collection and analysis cabinet, thereby avoiding the situation where the containment leak is lost and monitoring occurs;

[0057] 2. It was found through investigation that different units may use different types of pressure sensors for the pressure sensor inside the shell and the atmospheric pressure sensor outside the shell. Some units use current type pressure sensors, and some units use voltage type pressure sensors. Therefore, the acquisition and analysis cabinet in the prior art needs to design its corresponding acquisition board and analysis software according to the type of pressure sensor of the unit to which it is applied, so that the acquisition and analysis cabinets of different units cannot be used interchangeably. In the emergency acquisition and analysis device of the present invention, since the switching module can be used to select whether the pressure signal inside the shell and the atmospheric pressure signal outside the shell are converted through the voltage and current transmitter module, the emergency acquisition and analysis device of the present invention is suitable for both units using current type pressure sensors and units using voltage type pressure sensors. Moreover, no matter whether the voltage type pressure signal or the current type pressure signal is collected, the current type analog signal is finally sent to the analyzer, so that the analyzer can use a unified analysis software for processing. Therefore, the emergency acquisition and analysis device of the present invention is universal in hardware and software among various units, realizing the acquisition and analysis of multiple signal types, and also realizing the free switching of power stations and units, that is, it can be applied to the daily leakage monitoring of containment of different power stations and different units;

[0058] 3. Since the import module of the analyzer allows users to manually input historical collection data, and it takes effect immediately in the calculation process of the analysis software, the emergency collection and analysis device of the present invention can calculate the containment leakage even in the initial stage of being put into use, and does not need to be initialized, avoiding the situation where the leakage data cannot be calculated during the 5-day initialization stage, thereby realizing continuous monitoring of the containment leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] In order to more clearly illustrate the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0060] Figure 1 It is a structural schematic diagram of an existing online monitoring system for daily leakage rate of containment;

[0061] Figure 2 It is a structural diagram of Embodiment 1 of the online monitoring system for daily leakage rate of containment vessel of the present invention;

[0062] Figure 3 yes Figure 1 The middle emergency collection and analysis device is a logical structure diagram of the first embodiment;

[0063] Figure 4 yes Figure 1 A schematic diagram of the structure of the panel of the collection box in Embodiment 1;

[0064] Figure 5 yes Figure 1 Schematic diagram of the interface for importing historical data into the analysis machine. DETAILED DESCRIPTION

[0065] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0066] Figure 2 This is a structural diagram of the first embodiment of the online monitoring system for the daily leakage rate of the containment of the present invention. The online monitoring system of this embodiment includes: an emergency collection and analysis device 10; multiple temperature sensors 21 (for example, 10), humidity sensors 22 (for example, 2), and a first pressure sensor (inside the containment) 23 arranged in the containment (inside the reactor building); a second pressure sensor (atmospheric pressure sensor) 24 and a compressed air flow meter 25 arranged outside the containment; and a signal integration cabinet 30 (for example, EPP001AR). The signal integration cabinet 30 is respectively connected to the temperature sensor 21, the humidity sensor 22, and the first pressure sensor 23, and is used to summarize and transfer the temperature signal, humidity signal, and inside pressure signal in the containment.

[0067] Moreover, in this embodiment, the emergency collection and analysis device 10 includes a collection box 11 and an analysis machine 12 connected to each other. Figure 3 The acquisition box 11 specifically includes: an access module 111, an acquisition module 112, a switching module 113 and a voltage and current transmission module 114; the analysis machine 12 specifically includes: an input module 121, an import module 122, a processing module 123 and an output module 124. Among them:

[0068] The access module 111 is used to access the external atmospheric pressure signal and the compressed air flow signal outside the containment shell, and to access the temperature signal, humidity signal and the internal pressure signal inside the containment shell through the signal integration cabinet 30;

[0069] The acquisition module 112 is used to acquire the temperature signal, the humidity signal, the pressure signal inside the shell, the atmospheric pressure signal outside the shell, and the compressed air flow signal to generate current acquisition data;

[0070] The switching module 113 is used for, according to the switching signal input by the user, when the pressure signal inside the shell and the atmospheric pressure signal outside the shell are voltage-type analog signals, first sending them to the voltage-current transducer module 114 to convert them into current-type analog signals, and then sending them to the acquisition module 112; when the pressure signal inside the shell and the atmospheric pressure signal outside the shell are current-type analog signals, directly sending them to the acquisition module 112;

[0071] The input module 121 is used to receive the current power station identifier and the current unit identifier input by the user;

[0072] The import module 122 is used to receive historical collection data imported by the user;

[0073] The processing module 123 is used to analyze the leakage of the containment according to the historical collected data and the current collected data output by the collection module 112, and associate the analysis result with the current power plant identifier and the current unit identifier. Specifically, when analyzing the leakage of the containment, the leakage parameters of the containment can be calculated based on the historical collected data and the current collected data, for example, including: the average temperature of the containment, the average humidity, the rising trend of the pressure of the containment, the trend of the flow rate of the injected gas in the containment, etc., and then, based on these parameter data, the leakage of the containment to the atmosphere during the operation of the nuclear power plant can be analyzed.

[0074] The output module 124 is used to output the associated analysis results.

[0075] The emergency collection and analysis device of this embodiment has the following beneficial effects:

[0076] 1. The emergency data collection and analysis device of this embodiment has eliminated unnecessary equipment such as printers and time synchronization hubs that are large in size, high in power, and high in price. Therefore, it is not only low in cost, short in construction period, and low in power consumption, but also small in size and highly mobile, and can be easily moved to the required unit. When the hardware or software in the existing data collection and analysis cabinet fails and cannot be repaired in the short term, the emergency data collection and analysis device of this embodiment can be used to replace the existing data collection and analysis cabinet, thereby avoiding the situation where the containment leak is lost for monitoring;

[0077] 2. It was found through investigation that different units may use different types of pressure sensors for the pressure sensor inside the shell and the atmospheric pressure sensor outside the shell. Some units use current-type pressure sensors, while some units use voltage-type pressure sensors. Therefore, the acquisition and analysis cabinet in the prior art needs to design the corresponding acquisition board and analysis software according to the type of pressure sensor of the unit to which it is applied, so that the acquisition and analysis cabinets of different units cannot be used interchangeably. In the emergency acquisition and analysis device of this embodiment, since the switching module can be used to select whether the pressure signal inside the shell and the atmospheric pressure signal outside the shell are converted through the voltage and current transmitter module, the emergency acquisition and analysis device of this embodiment is suitable for both units using current-type pressure sensors and units using voltage-type pressure sensors. Moreover, no matter whether the voltage-type pressure signal or the current-type pressure signal is collected, the current-type analog signal is finally sent to the analyzer, so that the analyzer can use a unified analysis software for processing. Therefore, the emergency collection and analysis device of this embodiment has common hardware and software among various units, realizes the collection and analysis of various signal types, and also realizes the free switching of power stations and units, that is, it can be applied to the daily leakage monitoring of containment in different power stations and different units;

[0078] 3. Since the import module of the analysis machine allows users to manually input historical collection data, and it takes effect immediately in the calculation process of the analysis software, the emergency collection and analysis device of this embodiment can calculate the containment leakage even when it is just put into use, and does not need to be initialized, avoiding the situation where the leakage data cannot be calculated during the 5-day initialization stage, thereby realizing continuous monitoring of the containment leakage.

[0079] Further, in an optional embodiment, the access module includes: a plurality of first connectors, a plurality of second connectors, a plurality of third connectors, and a fourth connector, and the first connector, the second connector, the third connector, and the fourth connector may all be JAEGER connectors. The acquisition module includes: a resistance temperature acquisition board and an analog quantity acquisition board, wherein the resistance temperature acquisition board is connected to the plurality of first connectors. The voltage and current transducer module includes a plurality of voltage and current transducers, and each voltage and current transducer corresponds to a second connector. The switching module includes a plurality of selection switches, and each selection switch corresponds to a second connector.

[0080] In this embodiment, a plurality of first connectors are used to access the temperature signal in the containment shell through the signal integration cabinet; a plurality of second connectors are used to access the outer shell atmospheric pressure signal outside the containment shell, and to access the inner shell pressure signal in the containment shell through the signal integration cabinet; a plurality of third connectors are used to access the humidity signal in the containment shell through the signal integration cabinet; and a fourth connector is used to access the compressed air flow signal outside the containment shell. The resistance temperature acquisition board is used to collect the temperature signal; the analog quantity acquisition board is used to collect the inner shell pressure signal, the outer shell atmospheric pressure signal, and the humidity signal and the compressed air flow signal. For each selection switch, its input end is connected to the corresponding second connector, its first selection end is connected to the input end of the corresponding voltage and current transmitter, and its second selection end and the output end of the voltage and current transmitter are connected to the corresponding input end of the analog quantity acquisition board.

[0081] In an optional embodiment, the acquisition box further includes: a power input module and a voltage conversion module, wherein the power input module is used to access the AC mains; the voltage conversion module is used to convert the AC mains into a 12V / 24V DC voltage and supply power to the acquisition module. The acquisition box may further include a power output module, which is used to output a 12V / 24V DC voltage to supply power to other on-site devices.

[0082] In an optional embodiment, the collection box also includes: a first RJ45 interface and a first network module. Correspondingly, the analysis machine also includes: a second RJ45 interface and a second network module. The first network module of the collection box is used to convert the current collection data output by the collection module into a network signal, and transmit it to the analysis machine through the first RJ45 interface; the second network module is used to convert the network signal received through the second RJ45 interface into the current collection data. In this embodiment, the collection box and the analysis machine communicate data via a network cable using the Modbus_TCP communication protocol.

[0083] In an optional embodiment, the collection box may further include a heat dissipation device, such as a fan, a heat dissipation hole, etc.

[0084] In an optional embodiment, the collection box includes a box body, which includes a box body main body provided with a receiving cavity and a box cover connected to the box body main body, and the box body is, for example, a 640 mm × 505 mm × 280 mm military-grade quality portable safety protection box. Moreover, a roller is provided on one side of the box body main body, and the roller is, for example, a universal wheel, and a handle is provided on the other side of the box body, so that the emergency collection and analysis device can be easily moved to the required unit. In addition, the access module, the collection module, the voltage and current transmission module, and the switching module are arranged in the receiving cavity.

[0085] Furthermore, a cage is provided in the accommodating cavity of the box body, a panel is provided on the upper end surface of the cage, and an access module, a power input module, a power output module, a heat dissipation hole, a first RJ45 interface, etc. are provided on the panel, and fixing parts for fixing the acquisition module and the voltage and current transmitter module are provided inside the cage.

[0086] Combination Figure 4 The panel schematic diagram shown is a metal panel, for example, and includes a JAEGER connector, a 220V power input port, an RJ45 network port, and is designed with ventilation holes and fans to dissipate heat for the device. According to different functions, the panel is divided into four areas A1, A2, A3, and A4, where area A1 is the signal acquisition area, area A2 is the ventilation area, area A3 is the pressure signal type selection area, and area A4 is the network port and 220V power area.

[0087] 28 JAEGER 7-core female connectors are installed in the signal collection area to access temperature signals, humidity signals, pressure signals inside the containment, atmospheric pressure signals outside the containment, and compressed air flow signals. Four 3-core female connectors are also installed to provide external DC power supply.

[0088] Since pressure signals are of two types, voltage type (passive signal) and current type (active signal), when the emergency data acquisition and analysis device is connected to different units, the user manually sets the state of the selection switch through the 6 dial selection switches on the panel according to the type of pressure sensor used in the currently connected unit. Specifically, when a passive voltage type signal is connected, the first 3 selection switches in the panel are set to 1 (i.e., the on state) and the last 3 selection switches are set to 0 (i.e., the off state); conversely, when an active current type signal is connected, the last 3 selection switches in the panel are set to 1 and the first 3 selection switches are set to 0, so as to ensure that both voltage type and current type pressure signals can be sent to the same board channel.

[0089] In an optional embodiment, the analysis machine is installed with analysis software, which calculates the collected data and outputs containment related parameters, leakage results and reports. In addition, compared with the existing analysis software, the following functions are added:

[0090] 1. Power station and unit switching function: The switching process only needs to be operated in the software interface, and it can take effect without exiting the software or restarting the computer. After the switch, the corresponding calculation reports, software interface pages, etc. will be changed accordingly, so it is convenient for this emergency analysis device to connect to different power stations and units;

[0091] 2. Continuous calculation function: supports importing historical data collected over the past few days, such as Figure 5As shown, the user can import 19 days of historical data, thus avoiding the 5-day initialization and achieving continuous calculation of the containment leakage rate.

[0092] In summary, the emergency collection and analysis device for the leakage rate of the containment of a nuclear power plant of the present invention is an emergency backup device when the fixed collection and analysis cabinet EPP002AR fails, which is suitable for different types of containment signal collection and analysis and has strong versatility. Moreover, compared with the existing collection and analysis cabinet EPP002AR, it can also avoid entering the initialization stage, realize seamless connection of containment data monitoring, improve the reliability of key equipment, and realize real-time monitoring of containment parameters and functions.

[0093] 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 substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. An emergency collection and analysis device for the leakage rate of a nuclear power plant containment, characterized in that: It includes a collection box and an analysis machine connected together, wherein: The collection box comprises: Access module, used to access the external atmospheric pressure signal and compressed air flow signal outside the containment, and access the temperature signal, humidity signal and internal pressure signal inside the containment through the signal integration cabinet; A collection module, used for collecting the temperature signal, the humidity signal, the pressure signal inside the shell, the atmospheric pressure signal outside the shell, and the compressed air flow signal to generate current collection data; Voltage and current transmitter module; A switching module, for, according to a switching signal input by a user, when the pressure signal inside the shell and the atmospheric pressure signal outside the shell are voltage-type analog signals, first sending them to the voltage-current transducer module to convert them into current-type analog signals, and then sending them to the acquisition module; when the pressure signal inside the shell and the atmospheric pressure signal outside the shell are current-type analog signals, directly sending them to the acquisition module; The analysis machine comprises: An input module, used to receive the current power station identifier and the current unit identifier input by the user; Import module, used to receive historical collection data imported by users; A processing module, used for analyzing the leakage of the containment according to the historical collected data and the current collected data output by the collection module, and associating the analysis result with the current power plant identifier and the current unit identifier; The output module is used to output the analysis results after correlation.

2. The emergency collection and analysis device for the leakage rate of the containment of a nuclear power plant according to claim 1, characterized in that: The access module comprises: A plurality of first connectors, respectively used to access the temperature signal in the containment through the signal integration cabinet; The acquisition module comprises: The resistance temperature acquisition board is connected to the plurality of first connectors and is used to acquire the temperature signal.

3. The emergency collection and analysis device for the leakage rate of the containment of a nuclear power plant according to claim 2, characterized in that: The access module comprises: A plurality of second connectors, used for accessing an external atmospheric pressure signal outside the containment shell, and for accessing an internal pressure signal inside the containment shell through a signal integration cabinet; The acquisition module comprises: An analog quantity acquisition board, used for acquiring the pressure signal inside the shell and the atmospheric pressure signal outside the shell; The voltage and current transducer module includes a plurality of voltage and current transducers corresponding one to one with each second connector; The switching module includes a plurality of selection switches corresponding to each second connector one by one, and the input end of the selection switch is connected to the corresponding second connector, the first selection end of the selection switch is connected to the input end of the corresponding voltage and current transmitter, and the second selection end of the selection switch and the output end of the voltage and current transmitter are connected to the corresponding input end of the analog quantity acquisition board.

4. The emergency collection and analysis device for nuclear power plant containment leakage rate according to claim 3 is characterized in that: The access module comprises: A plurality of third connectors, used for accessing the humidity signal in the containment through the signal integration cabinet; A fourth connector, used for accessing a compressed air flow signal outside the containment vessel; and, The analog quantity acquisition board is also used to collect the humidity signal and the compressed air flow signal.

5. The emergency collection and analysis device for nuclear power plant containment leakage rate according to claim 4, characterized in that: The first connector, the second connector, the third connector and the fourth connector are all JAEGER connectors.

6. The emergency collection and analysis device for nuclear power plant containment leakage rate according to claim 1, characterized in that: The collection box also includes: Power input module, used to access AC mains; The voltage conversion module is used to convert the AC mains into a 12V / 24V DC voltage and supply power to the acquisition module.

7. The emergency collection and analysis device for nuclear power plant containment leakage rate according to claim 6, characterized in that: The collection box also includes: Power output module, used to output 12V / 24V DC voltage.

8. The emergency collection and analysis device for nuclear power plant containment leakage rate according to claim 1, characterized in that: The collection box also includes: The first RJ45 interface; A first network module, used for converting the current collected data output by the collection module into a network signal, and transmitting it to the analysis machine through a first RJ45 interface; The analysis machine also includes: Second RJ45 interface; The second network module is used to convert the network signal received through the second RJ45 interface into current collection data.

9. The emergency collection and analysis device for nuclear power plant containment leakage rate according to claim 1, characterized in that: The collection box includes a box body, which includes a box body main body provided with a accommodating cavity and a box cover connected to the box body for opening and closing. Moreover, a roller is provided on one side of the box body, and a handle is provided on the other side of the box body. The access module, the collection module, the voltage and current transmission module and the switching module are arranged in the accommodating cavity.

10. The emergency collection and analysis device for nuclear power plant containment leakage rate according to claim 9, characterized in that: A cage is arranged in the accommodating cavity of the box body, a panel is arranged on the upper end surface of the cage, and the access module is arranged on the panel, and a fixing part for fixing the acquisition module and the voltage and current transducer module is arranged inside the cage.

11. An online monitoring system for the leakage rate of a nuclear power plant containment, characterized in that: include: A plurality of temperature sensors, a humidity sensor, and a first pressure sensor are arranged in the containment vessel; A second pressure sensor and a compressed air flow meter are arranged outside the containment; A signal integration cabinet connected to the temperature sensor, the humidity sensor, and the first pressure sensor; as well as, The emergency collection and analysis device according to any one of claims 1 to 10.

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