Nuclear power plant card machine test circuit and device
By designing a burn-in test circuit for nuclear power plant electronic cards, the need for offline testing of electronic cards in nuclear power plants was addressed, ensuring the normal functioning of the cards and improving the safety and testing efficiency of nuclear power plants.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGXI FANGCHENGGANG NUCLEAR POWER
- Filing Date
- 2025-05-13
- Publication Date
- 2026-06-12
AI Technical Summary
Nuclear power plants lack equipment to perform offline burn-in tests on backup electronic cards, resulting in compromised spare parts quality and potential damage to on-site equipment or wasted human resources.
A nuclear power plant card burn-in test circuit was designed, including an isolation module, a rectifier and filter module, an inverter module, an energy storage module, and a monitoring module. It can perform offline testing on electronic cards to ensure their normal function.
Offline burn-in testing of electronic cards for nuclear power plants was achieved, ensuring that the cards functioned normally when installed on-site, thus improving the safety and testing efficiency of nuclear power plants.
Smart Images
Figure CN224354502U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of nuclear power plant equipment maintenance technology, and in particular to a nuclear power plant card burn-in test circuit and device. Background Technology
[0002] In nuclear power plants, various functional systems (including DCS systems) are typically equipped with multiple electronic cards. Due to issues such as malfunctions and aging, some electronic cards frequently need to be replaced during daily operation. Currently, due to the lack of equipment capable of offline burn-in testing of backup electronic cards (referred to as spare parts), spare parts are usually only installed on-site after passing visual inspection and then subjected to live burn-in testing. Although the electronic cards are functionally tested by the manufacturer before delivery, the reliability of the spare parts cannot be guaranteed after long-distance transportation and prolonged storage. If a spare part has quality problems, at best, another spare part needs to be installed, wasting manpower; at worst, the faulty spare part may damage other equipment on-site. Therefore, nuclear power plants urgently need equipment capable of offline burn-in testing of electronic cards. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a circuit and device for testing the card burn-in of nuclear power plants.
[0004] The technical solution adopted by this utility model to solve its technical problem is: constructing a nuclear power plant card burn-in test circuit, including:
[0005] A first isolation module for connecting to and isolating a first AC power supply;
[0006] A rectifier and filter module connected to the first isolation module, used to connect to the isolated first AC power supply and output DC power;
[0007] An inverter module connected to the rectifier and filter module for providing a second AC power supply for testing;
[0008] An energy storage module connected to the inverter module for providing DC power when the first AC power supply fails; and
[0009] A monitoring module connected to the inverter module, used to connect the card under test and record and display the current amplitude, voltage amplitude and voltage waveform of the second AC power supply of the card under test during the test.
[0010] Preferably, the rectifier-filter module includes:
[0011] The rectifier, the first end of which is connected to the first isolation module;
[0012] A first inductor, the first end of which is connected to the second end of the rectifier, and the second end of which is connected to the first end of the inverter module;
[0013] A DC filter capacitor is connected between the second terminal of the first inductor and ground.
[0014] Preferably, the energy storage module includes:
[0015] Battery components;
[0016] A soft-start bypass, the first end of which is connected to the battery assembly, is used to turn on when the first AC power is lost and to turn off after a certain delay.
[0017] The second inductor has its first end connected to the second end of the soft-start bypass and its second end connected to the first end of the inverter module.
[0018] A first switch, connected in parallel with the soft-start bypass, is used to turn on during the soft-start bypass delay period; and
[0019] A diode, connected in series between the second terminal of the first inductor and the first terminal of the inverter module, is used to prevent the DC power output from the battery assembly from flowing back to the rectifier.
[0020] Preferably, the inverter module includes:
[0021] An inverter, the first end of which is connected to the rectifier and filter module;
[0022] The third inductor has its first end connected to the second end of the inverter;
[0023] A first isolation transformer, the first end of which is connected to the second end of the third inductor, is used to isolate the second AC power supply;
[0024] A first fuse, the first end of which is connected to the second end of the first isolation transformer, and the second end of which is connected to the monitoring module; and
[0025] An AC filter capacitor is connected between the second terminal of the first isolation transformer and ground.
[0026] Preferably, the monitoring module includes:
[0027] A waveform recorder, connected to the inverter module, is used to detect the voltage waveform output by the second AC power supply.
[0028] A first current transmitter, connected to the inverter module, is used to detect the current amplitude output by the second AC power supply.
[0029] A first voltage transmitter, connected to the inverter module, is used to detect the voltage amplitude output by the second AC power supply; and
[0030] The recording and display module, together with the waveform recorder, the first current transmitter, and the first current transducer, is used to record and display the current amplitude, the voltage amplitude, and the voltage waveform.
[0031] Preferably, the monitoring module further includes:
[0032] A second current transmitter, connected to the energy storage module and the recording and display module, is used to detect the DC power current output by the energy storage module and output the DC power current to the recording and display module; and
[0033] The second voltage transmitter is connected to the energy storage module and the recording and display module, and is used to detect the DC power supply voltage output by the energy storage module and output the DC power supply voltage to the recording and display module.
[0034] Preferably, the nuclear power plant card burn-in test circuit further includes:
[0035] A bypass power supply module connected to the second end of the inverter module, used to preferentially replace the power supply of the first AC power source when the first AC power source fails.
[0036] Preferably, the bypass power supply module includes:
[0037] The second switch has its first end used to connect to a third AC power source;
[0038] A second isolation transformer, the first terminal of which is connected to the second terminal of the second switch; and
[0039] The switching switch includes a first switching channel and a second switching channel. The first switching channel is connected between the second terminal of the second isolation transformer and the monitoring module, and the second switching channel is connected between the inverter module and the monitoring module.
[0040] This utility model also constructs a nuclear power plant card burn-in test device, including a cabinet, the cabinet including several receiving structures, each receiving structure being provided with the nuclear power plant card burn-in test circuit described above.
[0041] Preferably, each of the receiving structures further includes:
[0042] A temperature sensor, connected to the nuclear power plant card burn-in test circuit, is used to measure the temperature of the containment structure; and
[0043] The heat dissipation module is connected to the nuclear power plant card burn-in test circuit.
[0044] The present invention provides the following beneficial effects: it provides a nuclear power plant card burn-in test circuit that can perform offline burn-in tests on various electronic cards in nuclear power plants, ensuring that the electronic cards function normally when installed on site, and playing a positive role in improving the safety of nuclear power plants. Attached Figure Description
[0045] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:
[0046] Figure 1 This is a circuit diagram of the nuclear power plant card burn-in test circuit in some embodiments of this utility model;
[0047] Figure 2 This is a front view of the nuclear power plant card burn-in test device in some embodiments of this utility model. Detailed Implementation
[0048] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.
[0049] In the following description, it should be understood that the orientations or positional relationships indicated by terms such as "front," "rear," "up," "down," "left," "right," "longitudinal," "horizontal," "vertical," "horizontal," "top," "bottom," "inner," "outer," "head," and "tail" are based on the orientations or positional relationships shown in the accompanying drawings, and are constructed and operated in a specific orientation. They are only for the convenience of describing this technical solution and do not indicate that the device or component referred to must have a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0050] Figure 1 This is a circuit diagram of a nuclear power plant card burn-in test circuit in some embodiments of this utility model. The nuclear power plant card burn-in test circuit can perform offline burn-in tests on various electronic cards in nuclear power plants to ensure that the electronic cards function normally when installed on site, which plays a positive role in improving the safety of nuclear power plants.
[0051] Please see Figure 1 The nuclear power plant card burn-in test circuit may include a first isolation module 1, a rectifier and filter module 2, an inverter module 3, an energy storage module 4, and a monitoring module 5.
[0052] The first isolation module 1 is used to connect to a first AC power supply for isolating the first AC power supply. Specifically, the first AC power supply can be 380VAC mains power. Isolating the first AC power supply can improve test safety, reduce the risk of electric shock to personnel during the test process, and also prevent the test circuit from being affected by power grid fluctuations, thus helping to improve the stability of the test environment.
[0053] In some embodiments, please refer to Figure 1 The first isolation module 1 may include a third switch 11 and a third isolation transformer 12. The first terminal of the third switch 11 can be connected to a first AC power supply, and the second terminal of the third switch 11 is connected to the rectifier and filter module 2 via the third isolation transformer 12. The third isolation transformer 12 can be an existing isolation transformer capable of reducing 380VAC to 220VAC.
[0054] The rectifier and filter module 2 is connected to the first isolation module 1. The rectifier and filter module 2 is used to connect to the isolated first AC power supply, rectify and filter the first AC power supply, and output DC power supply.
[0055] In some embodiments, please refer to Figure 1 The rectifier-filter module 2 may include a rectifier 21, a first inductor 22, and a DC filter capacitor 23. The first terminal of the rectifier 21 is connected to the third isolation transformer 12 in the first isolation module 1. The first terminal of the first inductor 22 is connected to the second terminal of the rectifier 21. The second terminal of the first inductor 22 is connected to the first terminal of the inverter module 3 to provide it with the DC power supply. The DC filter capacitor 23 is connected between the second terminal of the first inductor 22 and ground. The rectifier 21 can be an existing rectifier bridge for rectifying the first AC power supply. The DC filter capacitor 23 can be an existing electrolytic capacitor to reduce output voltage ripple. The first inductor 22 can filter out high-frequency harmonics.
[0056] Inverter module 3 is connected to rectifier and filter module 2. Inverter module 3 is used to provide a second AC power supply for testing.
[0057] In some embodiments, please refer to Figure 1 The inverter module 3 may include an inverter 31, a third inductor 32, a first isolation transformer 33, a first fuse 34, and an AC filter capacitor 35. The first terminal of the inverter 31 is connected to the rectifier and filter module 2, and the inverter 31 is used to convert DC power to a second AC power. The first terminal of the third inductor 32 is connected to the second terminal of the inverter 31, and the third inductor 32 is used to filter out high-frequency interference in the second AC power, improving the quality of the second AC power. The first terminal of the first isolation transformer 33 is connected to the second terminal of the third inductor 32, and the first isolation transformer 33 is used to isolate the second AC power, similar in function to the third isolation transformer 12. The first terminal of the first fuse 34 is connected to the second terminal of the first isolation transformer 33, and the second terminal of the first fuse 34 is connected to the monitoring module 5. The first fuse 34 is used to blow when the second AC power is overcurrent, protecting the test circuit. The AC filter capacitor 35 is connected between the second terminal of the first isolation transformer 33 and ground. The AC filter capacitor 35 and the third inductor 32 form an LC filter circuit, used to filter out high-frequency harmonics in the second AC power.
[0058] The energy storage module 4 is connected to the inverter module 3. The energy storage module 4 is used to provide DC power to the inverter module 3 when the first AC power supply fails, so as to avoid the interruption of the stress test due to the mains power failure.
[0059] In some embodiments, please refer to Figure 1 The energy storage module 4 may include a battery assembly 41, a soft-start bypass 42, a second inductor 43, a first switch 44, and a diode 45. The battery assembly 41 may include a lithium battery cluster for outputting DC power and a charging circuit connected to the lithium battery cluster for charging the lithium battery cluster; the charging circuit can be an existing charging circuit. The first end of the soft-start bypass 42 is connected to the battery assembly 41. The soft-start bypass 42 is used to turn on when the first AC power is lost and turn off after a certain delay to prevent voltage surges in the battery assembly 41 at the moment of power-on, which could damage subsequent circuits. The first end of the second inductor 43 is connected to the second end of the soft-start bypass 42, and the second end of the second inductor 43 is connected to the first end of the inverter module 3. The second inductor 43 is used to filter the DC power output from the stable battery assembly 41, improving the stability of the DC power. The first switch 44 is connected in parallel with the soft-start bypass 42. The first switch 44 is used to turn on during the delay period of the soft-start bypass 42 (typically turning on just before the soft-start bypass 42 turns off). Diode 45 is connected in series between the second end of the first inductor 22 and the first end of the inverter module 3. Diode 45 is used to prevent the DC power output from the battery assembly 41 from flowing back to the rectifier 21.
[0060] Monitoring module 5 is connected to inverter module 3. Monitoring module 5 is used to connect to the card under test and record and display the current amplitude, voltage amplitude, and voltage waveform of the second AC power supply during the test of the card under test. This allows staff to monitor and review the test process of the card under test in real time to assess whether the card under test meets the usage requirements. It should be noted that the card under test refers to the electronic card being tested.
[0061] In some embodiments, please refer to Figure 1 The monitoring module 5 may include a waveform recorder 51, a first current transmitter 52, a first voltage transmitter 53, and a recording and display module 54. The waveform recorder 51 is connected to the inverter module 3 and is used to detect the voltage waveform output by the second AC power supply. The waveform recorder 51 can be an existing oscilloscope. The first current transmitter 52 is connected to the inverter module 3 and is used to detect the current amplitude output by the second AC power supply. The first voltage transmitter 53 is connected to the inverter module 3 and is used to detect the voltage amplitude output by the second AC power supply.
[0062] The recording and display module 54, along with the waveform recorder 51, the first current transmitter 52, and the first current transmitter 52, are used to record and display the current amplitude, voltage amplitude, and voltage waveform.
[0063] Further, please refer to Figure 1 The monitoring module 5 may further include a second current transmitter 55 and a second voltage transmitter 56. The second current transmitter 55 is connected to the energy storage module 4 and the recording and display module 54. The second current transmitter 55 detects the DC power supply current output by the energy storage module 4 and outputs the DC power supply current to the recording and display module 54, so that the recording and display module 54 can display the magnitude of the DC power supply current output by the energy storage module 4. The second voltage transmitter 56 is connected to the energy storage module 4 and the recording and display module 54. The second voltage transmitter 56 detects the DC power supply voltage output by the energy storage module 4 and outputs the DC power supply voltage to the recording and display module 54, so that the recording and display module 54 can display the magnitude of the DC power supply voltage output by the energy storage module 4.
[0064] In some embodiments, the recording and display module 54 may include a controller and a display 541. The controller is connected to the waveform recorder 51, the first current transmitter 52, the first voltage transmitter 53, the recording and display module 54, the second current transmitter 55, the second voltage transmitter 56, and the display 541. The controller receives and records the current amplitude, voltage amplitude, voltage waveform, DC power supply current, and DC power supply voltage, and then controls the display 541 to display the current amplitude, voltage amplitude, voltage waveform, DC power supply current, and DC power supply voltage. The recording and display module 54 may be an existing PLC controller.
[0065] In some embodiments, please refer to Figure 1 The nuclear power plant card burn-in test circuit may also include a bypass power supply module 6. The bypass power supply module 6 is connected to the second terminal of the inverter module 3, and is used to preferentially replace the first AC power supply when the first AC power supply fails. Understandably, in this embodiment, the energy storage module 4 will only be used to power the test circuit when both the first AC power supply and the power supply of the bypass power supply module 6 fail simultaneously. This is to ensure that the energy storage module 4 retains as much electrical energy as possible to cope with prolonged power outages.
[0066] In some embodiments, please refer to Figure 1The bypass power supply module 6 may include a second switch 61, a second isolation transformer 62, and a switching switch 63. The first terminal of the second switch 61 is used to connect to a third AC power source, and the second switch 61 is activated when the first AC power source fails. The first terminal of the second isolation transformer 62 is connected to the second terminal of the second switch 61. The function of the second isolation transformer 62 is similar to that of the first isolation transformer 33, and will not be described further here. The switching switch 63 may include a first switch channel and a second switch channel. The first switch channel is connected between the second terminal of the second isolation transformer 62 and the monitoring module 5, and is activated when powered by the third DC power source. The second switch channel is connected between the inverter module 3 and the monitoring module 5, and is activated when powered by the first AC power source or the energy storage module 4.
[0067] In this embodiment, the switch 63 can be an existing multi-pole multi-throw switch, which can control the conduction of the first and second switch channels according to the operator's operation. The third AC power supply can be 220VAC mains power.
[0068] In some embodiments, the first switch 44, the second switch 61, and the third switch 11 can be contactors, relays, or other types of electrically controlled switches. Accordingly, the control terminals of the first to third switches (equivalent to the coils of contactors or relays) are also connected to a controller in the recording and display module 54, which is also used to control the on / off state of the first to third switches. Of course, the first to third switches can also be existing manually operated switches (such as knife switches, etc.).
[0069] In some embodiments, the nuclear power plant card burn-in test circuit may further include a human-machine interface module 71, which is connected to the controller. The human-machine interface module 71 is used to input relevant operation commands to the controller according to the operation, so that the controller can perform corresponding operations, including controlling the on / off state of the first to third switches. The human-machine interface module 71 can be a touch screen. It should be noted that controlling contactors, relays, and other electrically controlled switches through a controller is a very mature technology; please refer to existing technologies for details, which will not be elaborated here.
[0070] In some embodiments, please refer to Figure 1The bypass power supply module 6 may further include a second fuse 64, a fourth switch 65, and a fifth switch 66. Correspondingly, the switching switch 63 also includes a third switching channel. The first end of the third switching channel is connected to the second end of the second isolation transformer 62, and the second end of the third switching channel is connected to the first end of the second switching channel (the second end of the second switching channel is connected to the monitoring module 5) via the second fuse 64 and the fourth switch 65. The fifth switch 66 is connected between the first end of the second switching channel and the inverter module 3. The fourth switch 65 and the fifth switch 66 can be contactors. The controller is also connected to the fourth switch 65 and the fifth switch 66, and the controller is also used to control the on / off state of the fourth and fifth switches. Understandably, the purpose of this embodiment is to enable the switching of power supply between the third AC power supply and the first AC power supply (or the energy storage module 4) to be achieved using electronic control.
[0071] It should be noted that the first switch 44 is normally closed. This is to facilitate the energy storage module 4 drawing power from the rectifier 21 to charge the lithium battery clusters, and to allow the energy storage module 4 to provide alternative power when the first AC power supply fails. When the operator finds that the third AC power supply is normal, they can switch the power supply by operating the switching switch 63 or by inputting relevant operation commands through the human-machine interface module 71 to turn on the controller's fourth switch 65 and turn off the fifth switch 66. In addition, since the controller actually draws power from the first AC power supply or the energy storage module 4, when the first AC power supply fails or the energy storage module 4 is over-discharged, the power supply can only be switched manually by operating the switching switch 63.
[0072] Please see Figure 1 This utility model also provides a nuclear power plant card burn-in testing device. This device may include a cabinet 10, which may include several receiving structures 101. Each receiving structure 101 contains the nuclear power plant card burn-in testing circuit provided in this embodiment. It is understood that the nuclear power plant card burn-in testing device can simultaneously perform burn-in testing on multiple electronic cards, improving testing efficiency.
[0073] To prevent the test circuit from overheating, in some embodiments, each housing structure 101 is further provided with a temperature sensor and a heat dissipation module. The temperature sensor is connected to the controller in the nuclear power plant card burn-in test circuit and is used to measure the temperature of the housing structure 101. Correspondingly, the display 541 is also used to display the temperature of the housing structure 101. The heat dissipation module is connected to the nuclear power plant card burn-in test circuit and is used to cool the corresponding housing structure 101.
[0074] In some embodiments, please refer to Figure 2The cabinet 10 includes a cavity, within which are several partitions (not shown) dividing the cavity space into multiple receiving spaces. Each receiving space has a hinged door 102 that can be opened and closed. Each door 102 has a handle 103 to facilitate opening or closing by personnel. Furthermore, the human-machine interface module 71 and display 541 in each nuclear power plant card burn-in test circuit are respectively mounted on their corresponding door 102.
[0075] It is understood that the above embodiments only illustrate preferred embodiments of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present utility model patent. It should be noted that for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present utility model, all of which fall within the protection scope of the present utility model. Therefore, all equivalent transformations and modifications made within the scope of the claims of the present utility model should fall within the coverage of the claims of the present utility model.
Claims
1. A nuclear power plant card burn-in test circuit, characterized in that, include: A first isolation module (1) is used to connect to and isolate a first AC power supply; A rectifier and filter module (2) connected to the first isolation module (1) for connecting to the isolated first AC power supply and outputting DC power; An inverter module (3) connected to the rectifier and filter module (2) for providing a second AC power supply for testing; An energy storage module (4) connected to the inverter module (3) for providing DC power when the first AC power supply fails; and A monitoring module (5) is connected to the inverter module (3) and is used to connect the card under test and record and display the current amplitude, voltage amplitude and voltage waveform of the second AC power supply of the card under test during the test.
2. The nuclear power plant card burn-in test circuit according to claim 1, characterized in that, The rectifier and filter module (2) includes: A rectifier (21) has its first end connected to the first isolation module (1); A first inductor (22) has its first end connected to the second end of the rectifier (21) and its second end connected to the first end of the inverter module (3); A DC filter capacitor (23) is connected between the second terminal of the first inductor (22) and ground.
3. The nuclear power plant card burn-in test circuit according to claim 2, characterized in that, The energy storage module (4) includes: Battery assembly (41); A soft-start bypass (42) is connected at its first end to the battery assembly (41) and is used to turn on when the first AC power is lost and to turn off after a certain delay. The second inductor (43) has its first end connected to the second end of the soft start bypass (42) and its second end connected to the first end of the inverter module (3); A first switch (44), connected in parallel with the soft-start bypass (42), is used to turn on during the delay period of the soft-start bypass (42); and A diode (45) is connected in series between the second end of the first inductor (22) and the first end of the inverter module (3) to prevent the DC power output from the battery assembly (41) from flowing back to the rectifier (21).
4. The nuclear power plant card burn-in test circuit according to claim 1, characterized in that, The inverter module (3) includes: Inverter (31), the first end of which is connected to the rectifier and filter module (2); The third inductor (32) has its first end connected to the second end of the inverter (31); A first isolation transformer (33) is connected at its first end to the second end of the third inductor (32) for isolating the second AC power supply; A first fuse (34), the first end of which is connected to the second end of the first isolation transformer (33), and the second end of which is connected to the monitoring module (5); and An AC filter capacitor (35) is connected between the second terminal of the first isolation transformer (33) and ground.
5. The nuclear power plant card burn-in test circuit according to claim 1, characterized in that, The monitoring module (5) includes: A waveform recorder (51) is connected to the inverter module (3) and is used to detect the voltage waveform output by the second AC power supply. The first current transmitter (52) is connected to the inverter module (3) and is used to detect the current amplitude output by the second AC power supply. A first voltage transmitter (53), connected to the inverter module (3), is used to detect the voltage amplitude output by the second AC power supply; and The recording and display module (54), together with the waveform recorder (51), the first current transmitter (52), and the first current transmitter (52), is used to record and display the current amplitude, the voltage amplitude, and the voltage waveform.
6. The nuclear power plant card burn-in test circuit according to claim 5, characterized in that, The monitoring module (5) also includes: A second current transmitter (55), connected to the energy storage module (4) and the recording and display module (54), is used to detect the DC power supply current output by the energy storage module (4) and output the DC power supply current to the recording and display module (54); and The second voltage transmitter (56) is connected to the energy storage module (4) and the recording and display module (54) and is used to detect the DC power supply voltage output by the energy storage module (4) and output the DC power supply voltage to the recording and display module (54).
7. The nuclear power plant card burn-in test circuit according to any one of claims 1 to 6, characterized in that, The nuclear power plant card burn-in test circuit also includes: A bypass power supply module (6) is connected to the second end of the inverter module (3) and is used to preferentially replace the first AC power supply when the first AC power supply fails.
8. The nuclear power plant card burn-in test circuit according to claim 7, characterized in that, The bypass power supply module (6) includes: The second switch (61) has its first end used to connect to the third AC power source; The second isolation transformer (62) has its first end connected to the second end of the second switch (61); and The switching switch (63) includes a first switching channel and a second switching channel. The first switching channel is connected between the second end of the second isolation transformer (62) and the monitoring module (5), and the second switching channel is connected between the inverter module (3) and the monitoring module (5).
9. A nuclear power plant card burn-in test device, characterized in that, Includes a cabinet (10), the cabinet (10) including a plurality of housing structures (101), each housing structure (101) being provided with a nuclear power plant card burn-in test circuit as described in any one of claims 1 to 8.
10. The nuclear power plant card burn-in test device according to claim 9, characterized in that, Each of the aforementioned housing structures (101) is further provided with: A temperature sensor, connected to the nuclear power plant card burn-in test circuit, is used to measure the temperature of the housing structure (101); and The heat dissipation module is connected to the nuclear power plant card burn-in test circuit.