Periodic test and regeneration device for catalytic plate of passive hydrogen recombiner

Abstract

The utility model relates to a passive hydrogen recombiner catalytic plate periodic test and regeneration device which comprises a support, a detection device and a regeneration device, the detection device comprises a detection heating box, a first gas inlet assembly and a first gas outlet assembly, and the first gas inlet assembly is connected to the gas inlet end of the detection heating box; the first gas outlet assembly comprises a first gas outlet adjusting pipeline and a first gas outlet analysis pipeline, and the first gas outlet adjusting pipeline and the first gas outlet analysis pipeline are connected to the gas outlet end of the detection heating box in parallel; the first air outlet adjusting pipeline is provided with a first air outlet flow adjusting valve; the first gas outlet analysis pipeline is provided with a first gas outlet flow meter and a hydrogen analyzer; the regeneration device comprises a regeneration heating box, a second air inlet assembly and a second air outlet assembly, and the regeneration heating box is located below the detection device; the second air inlet assembly is connected to the air inlet end of the regeneration heating box; the second air outlet assembly is connected to the air outlet end of the regeneration heating box. The detection reliability can be improved, and meanwhile the detection and regeneration efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of hydrogen removal system maintenance in nuclear power plants, and in particular to a device for periodic testing and regeneration of catalyst plates in a passive hydrogen recombination unit. Background Technology

[0002] The containment hydrogen removal system (EUH) is designed to reduce the hydrogen concentration in the containment air to below safe limits under design basis accident and beyond design basis accident conditions, thereby preventing the failure of the third barrier due to hydrogen explosion. When a nuclear power plant experiences a Localized Accident Centering (LOCA) or a severe accident, a large amount of hydrogen can be released in a short period due to radiolysis of the core coolant, radiolysis of sump water, reactions between reactor core metals and water, reactions between molten core material and concrete, and reactions between zirconium in the core fuel cladding and water. Without hydrogen removal measures, this could lead to deflagration, explosion, or other hazards that could compromise the containment.

[0003] For hydrogen generated inside the containment under accident conditions, a passive hydrogen recombiner is generally used for hydrogen removal. The principle of passive hydrogen recombiner hydrogen removal is as follows: Under the action of a catalyst, hydrogen combines with oxygen in the air to form water, thus removing hydrogen and releasing a large amount of heat of reaction. When the hydrogen concentration reaches the activation threshold under accident conditions, the hydrogen-containing gas mixture enters from the lower inlet of the hydrogen recombiner. On the surface of the catalytic plate, the hydrogen is oxidized, releasing heat of chemical reaction, which raises the temperature of the gas mixture, thereby reducing its density. The gas rises and exits from the upper outlet of the equipment. In other words, under the combined effect of the catalytic reaction on the catalyst surface and the "chimney effect," the hydrogen recombiner automatically starts operating, requiring no human intervention or energy supply, and automatically removes hydrogen.

[0004] In the event of a nuclear power plant accident, the passive hydrogen recombination unit automatically activates, requiring neither human intervention nor a power source. Following a loss-of-coolant accident, a large amount of hydrogen is instantly generated within the nuclear island. When the hydrogen concentration in the air reaches 1%–2%, the gas in the catalytic plate drawer spontaneously undergoes a hydrogen-oxygen recombination reaction, reducing the hydrogen concentration, generating water vapor, and releasing heat. The gas flows out from the top of the unit. Gas surrounding the unit enters the catalytic bed from the bottom, forming a continuous catalytic reaction. When the hydrogen concentration in the air falls below approximately 0.5%, it is below the minimum hydrogen concentration required by the catalytic plate, and the heat generated is insufficient to drive continued natural convection. Therefore, the unit gradually and automatically shuts down. At this point, the hydrogen concentration within the nuclear island has reached a low level, within a safe range.

[0005] As a core component of the unit, the catalytic plate requires regular testing of its hydrogen removal performance. The testing standards for the catalytic plate are based on the working characteristics of the catalyst. Under normal operating conditions in a nuclear power plant, the hydrogen recombination unit operates in a non-hydrogen removal state, and the catalytic plate's lifespan is not affected by the hydrogen-oxygen recombination reaction. However, the adsorption of volatile organic compounds and oxidation caused by long-term exposure of active components to air may reduce the catalytic plate's start-up performance, resulting in excessively long start-up times or excessively high start-up temperatures. However, the catalytic plate exhibits a "domino effect" characteristic in catalyst start-up; that is, once a localized catalytic plate starts working, the reaction heat generated by that plate can accelerate the start-up speed of adjacent catalytic plates, thus enabling the entire hydrogen recombination unit to quickly enter operation. Therefore, by conducting inspection tests, if there are normally starting catalytic plates in the hydrogen recombination unit, the unit can be guaranteed to operate normally. If a catalytic plate fails the performance test, its start-up activity can be restored through regeneration, ensuring the normal operation of the hydrogen recombination unit.

[0006] The periodic testing and regeneration device for passive hydrogen recombination devices (EUH test platform) serves as a tool for checking the performance of catalytic plates. In related technologies, the device contains a catalytic bed to hold the catalytic plates. Gas is blown onto the catalytic plates, causing the hydrogen-containing test gas to oxidize the hydrogen on the plate surface. The hydrogen concentration of the gas discharged from the device is measured to analyze whether the catalytic plates have normal hydrogen removal performance. For catalytic plates that fail the performance test, the catalytic bed is removed, and a regeneration support containing the catalytic plate requiring regeneration is placed back into the device for regeneration. However, related technologies lack airtightness testing during the testing process. Airtightness can affect the detection results of the hydrogen analyzer, thus impacting the reliability of the test data. Utility Model Content

[0007] This application provides a device for periodic testing and regeneration of a passive hydrogen recombination catalyst plate to improve the reliability of detection while increasing detection and regeneration efficiency.

[0008] This application provides a device for periodic testing and regeneration of a passive hydrogen recombination catalyst plate, comprising:

[0009] support;

[0010] The detection device includes a detection heating chamber, a first air inlet assembly, and a first air outlet assembly. The detection heating chamber is mounted on the support frame. The first air inlet assembly is connected to the air inlet end of the detection heating chamber, and a first air inlet flow meter is provided between the first air inlet assembly and the air inlet end of the detection heating chamber. The first air outlet assembly includes a first air outlet regulating pipeline and a first air outlet analysis pipeline, which are connected in parallel to the air outlet end of the detection heating chamber. The first air outlet regulating pipeline is equipped with a first air outlet flow regulating valve. The first air outlet analysis pipeline is equipped with a first air outlet flow meter and a hydrogen analyzer.

[0011] The regeneration device includes a regeneration heating box, a second air inlet assembly, and a second air outlet assembly. The regeneration heating box is mounted on the support and located below the detection device. The second air inlet assembly is connected to the air inlet end of the regeneration heating box, and a second air inlet flow meter is provided between the second air inlet assembly and the air inlet end of the regeneration heating box. The second air outlet assembly is connected to the air outlet end of the regeneration heating box.

[0012] Furthermore, it also includes a first receiving chamber, which is located above the regeneration heating box and on the side of the detection heating box; the first receiving chamber has a first receiving cavity and is provided with a first air inlet, a first air outlet, and a first exhaust port communicating with the first receiving cavity; the first air inlet assembly and the first air outlet assembly are disposed in the first receiving chamber;

[0013] The first air intake assembly is connected to the air intake end of the detection heating box through the first air intake connection port;

[0014] The first gas outlet assembly further includes a first gas outlet pipe, wherein the inlet end of the first gas outlet regulating pipe and the inlet end of the first gas outlet analysis pipe are merged and connected to the outlet end of the first gas outlet pipe, and the inlet end of the first gas outlet pipe is connected to the outlet end of the detection heating box through the first gas outlet connecting port; the first gas outlet pipe is provided with a dryer; and the outlet end of the first gas outlet regulating pipe and the outlet end of the first gas outlet analysis pipe are merged and connected to the first exhaust port.

[0015] Furthermore, the hydrogen analyzer is located in the first containment chamber, and the display screen of the hydrogen analyzer is exposed outside the first containment chamber;

[0016] And / or, the first inlet flow meter and the first outlet flow meter are located in the first receiving chamber and are respectively exposed outside the first receiving chamber;

[0017] And / or, the first outlet flow regulating valve is located in the first receiving chamber, and the regulating handle of the first outlet flow regulating valve is exposed outside the first receiving chamber.

[0018] Furthermore, the first intake assembly includes:

[0019] An air duct, the air inlet of which is used to connect to an air supply device; the air duct is equipped with an air shut-off valve and an air regulating valve; the air shut-off valve is used to control the opening and closing of the air duct, and the air regulating valve is used to regulate the airflow rate in the air duct; the air shut-off valve and the air regulating valve are located in the first receiving chamber, and the adjusting handles of the air shut-off valve and the air regulating valve are exposed outside the first receiving chamber;

[0020] A detection gas pipeline is provided, with its inlet end connected to a detection gas supply device. The detection gas pipeline is equipped with a detection gas shut-off valve and a detection gas regulating valve. The shut-off valve controls the opening and closing of the detection gas pipeline, and the regulating valve adjusts the flow rate of the detection gas within the pipeline. The shut-off valve and the regulating valve are located in the first receiving chamber, with their respective handles exposed outside the chamber.

[0021] The first air intake pipe is provided, wherein the air pipe and the detection air pipe are connected in parallel, and the outlet end of the air pipe and the outlet end of the detection air pipe are merged and connected to the inlet end of the first air intake pipe. The outlet end of the first air intake pipe is connected to the inlet end of the detection heating box through the first air intake connection port. The first air intake flow meter is provided in the first air intake pipe.

[0022] Furthermore, the detection heating chamber includes:

[0023] The detection chamber has a detection cavity, and the cavity wall is provided with a first heating tube;

[0024] A catalytic bed is disposed within the detection chamber and is used to place a catalytic plate; the gas outlet end of the catalytic bed is connected to the gas inlet end of the first gas outlet pipeline;

[0025] A first preheating coil is disposed in the detection chamber, and one end of the first preheating coil is connected to the first air inlet pipe, and the other end is connected to an air blowing pipe. The air blowing pipe is inserted into the catalyst bed, and the air blowing pipe is provided with air blowing holes for blowing air toward the catalyst plate.

[0026] Furthermore, it also includes a second receiving chamber, which is located below the first receiving chamber and on the side of the regeneration heating box; the second receiving chamber has a second receiving cavity and is provided with a second air inlet communicating with the second receiving cavity; the second air inlet assembly is disposed in the second receiving chamber, and the second air inlet is connected to the air inlet end of the regeneration heating box.

[0027] Furthermore, the second intake assembly includes:

[0028] A nitrogen pipeline, the inlet of which is used to connect to a nitrogen supply device; the nitrogen pipeline is equipped with a nitrogen shut-off valve and a nitrogen regulating valve; the nitrogen shut-off valve is used to control the opening and closing of the nitrogen pipeline, and the nitrogen regulating valve is used to regulate the nitrogen flow rate in the nitrogen pipeline; the nitrogen shut-off valve and the nitrogen regulating valve are located in the second receiving chamber, and the adjusting handles of the nitrogen shut-off valve and the nitrogen regulating valve are exposed outside the second receiving chamber;

[0029] A regenerated gas pipeline, the inlet end of which is used to connect to a regenerated gas supply device; the regenerated gas pipeline is equipped with a regenerated gas shut-off valve and a regenerated gas regulating valve, wherein the regenerated gas shut-off valve is used to control the opening and closing of the regenerated gas pipeline, and the regenerated gas regulating valve is used to regulate the regenerated gas flow rate in the regenerated gas pipeline; the regenerated gas shut-off valve and the regenerated gas regulating valve are located in the second receiving chamber, and the regulating handles of the regenerated gas shut-off valve and the regenerated gas regulating valve are exposed outside the second receiving chamber;

[0030] The second air inlet pipeline includes a nitrogen pipeline and a regeneration gas pipeline connected in parallel. The outlet ends of the nitrogen pipeline and the regeneration gas pipeline merge and connect to the inlet end of the second air inlet pipeline. The outlet end of the second air inlet pipeline is connected to the inlet end of the regeneration heating box through a second air inlet connector. A second air inlet flow meter is installed in the second air inlet pipeline. The second air inlet pipeline also includes a second preheating coil, which is located between the second air inlet flow meter and the regeneration heating box.

[0031] Furthermore, the regenerative heating box includes:

[0032] The regeneration box has a regeneration chamber, and the chamber wall is provided with a second heating tube;

[0033] A regeneration support is detachably disposed within the regeneration chamber; the regeneration support includes a frame, a fixing strip, and multiple hinge assemblies, the frame having a placement cavity, the fixing strip being disposed on the bottom wall of the placement cavity, and the hinge assemblies being rotatably disposed on the fixing strip; wherein, the catalyst plate is placed between two adjacent hinge assemblies.

[0034] Furthermore, there are two fixing strips, which are parallel and spaced apart; both ends of the hinge assembly are rotatably connected to the two fixing strips respectively.

[0035] The regeneration support also includes a central support strip disposed within the regeneration cavity and located between the two fixing strips. The side of the central support strip facing away from the bottom wall of the regeneration cavity is flush with the side of the fixing strip facing away from the bottom wall of the placement cavity. The side of the central support strip facing away from the bottom wall of the regeneration cavity and the side of the fixing strip facing away from the bottom wall of the regeneration cavity are used to support the catalyst plate placed between the hinge assemblies.

[0036] Furthermore, the hinge assembly includes:

[0037] The first hinge is door-shaped and located between the two fixing strips; both ends of the first hinge are rotatably connected to the two fixing strips respectively;

[0038] The second hinge is door-shaped, and the two fixing strips are located between the two sides of the second hinge. The two ends of the second hinge are respectively rotatably connected to the two fixing strips. The size of the second hinge is smaller than that of the first hinge, so that the second hinge fits onto the first hinge.

[0039] The technical solution provided in this application has the following advantages compared with the prior art:

[0040] In this application's technical solution, a support bracket provides a foundation for the detection device and the regeneration device. The detection device performs detection operations on the catalytic plate, and the regeneration device performs regeneration operations on the catalytic plate. That is, by setting up the detection device and the regeneration device, the detection process and the regeneration process are separated and can be operated independently and synchronously, thus improving detection and regeneration efficiency. Furthermore, arranging the detection device and the regeneration device vertically reduces the horizontal space occupied by the periodic testing and regeneration of the passive hydrogen recombination catalytic plate, thus making rational use of space. Simultaneously, the second air inlet assembly provides air for the regeneration operation of the regeneration heating chamber. After the regeneration operation is completed, the gas is discharged through the second air outlet assembly. The first air inlet assembly provides air for the detection operation in the detection heating chamber. The first air outlet assembly discharges the gas after the detection operation is completed, and the hydrogen concentration information of the discharged gas is detected and analyzed by a hydrogen analyzer. In this application, by setting a first air outlet analysis pipeline and a first air outlet regulation pipeline in parallel, and setting a first air outlet flow meter in the first air outlet analysis pipeline and a first air outlet flow regulation valve in the first air outlet regulation pipeline, the flow rate of the first air outlet regulation pipeline can be adjusted by the first air outlet flow regulation valve, thereby adjusting the flow rate of the first air outlet analysis pipeline. The airtightness of the detection process can be judged by the data change of the first air outlet flow meter, avoiding leakage during the detection process from affecting the reliability of the test data. Attached Figure Description

[0041] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0042] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0043] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0044] Figure 1 This is a schematic diagram of a passive hydrogen recombination catalyst plate periodic testing and regeneration device provided in an embodiment of this application;

[0045] Figure 2 for Figure 1 A schematic diagram of the structure after the hidden portion is shown.

[0046] Figure 3A schematic diagram of the detection device in a periodic testing and regeneration apparatus for a passive hydrogen recombination catalyst plate provided in this application embodiment;

[0047] Figure 4 A schematic flow diagram of the regeneration device in a periodic testing and regeneration apparatus for a passive hydrogen recombination catalyst plate provided in this application embodiment;

[0048] Figure 5 for Figure 1 Schematic diagram of the regenerative stent structure;

[0049] Figure 6 for Figure 1 A schematic diagram of the exploded structure of the regenerative stent.

[0050] Explanation of reference numerals in the attached figures:

[0051] Bracket 1, Casters 11, Handle 12

[0052] The system includes: a detection device 2, a detection heating chamber 21, a detection chamber body 211, a first heating element 212, a catalytic bed 213, a first preheating coil 214, a blowing pipe 215, a first air intake assembly 22, a first air intake flow meter 221, an air pipeline 222, a detection gas pipeline 223, a first air intake pipeline 224, an air shut-off valve 225, an air regulating valve 226, a detection gas shut-off valve 227, a detection gas regulating valve 228, a first gas outlet assembly 23, a first gas outlet regulating pipeline 231, a first gas outlet analysis pipeline 232, a first gas outlet flow regulating valve 233, a first gas outlet flow meter 234, a hydrogen analyzer 235, a first gas outlet pipeline 236, a dryer 237, and a first exhaust port 24.

[0053] The regeneration device 3 includes a regeneration heating box 31, a regeneration box body 311, a second heating element 312, a regeneration support 313, a frame 3131, a fixing strip 3132, a hinge assembly 3133, a first hinge 31331, a second hinge 31332, a central support strip 3134, a second air inlet assembly 32, a nitrogen pipeline 321, a regeneration gas pipeline 322, a second air inlet pipeline 323, a nitrogen shut-off valve 324, a nitrogen regulating valve 325, a regeneration gas shut-off valve 326, a regeneration gas regulating valve 327, a second preheating coil 328, a second air inlet flow meter 329, a second air outlet assembly 33, and a first exhaust port 34.

[0054] First storage compartment 4, second storage compartment 5

[0055] Air supply device 6, air pressure reducing valve 61, first hose 62, detection gas supply device 7, detection gas pressure reducing valve 71, second hose 72, nitrogen supply device 8, nitrogen pressure reducing valve 81, third hose 82, regeneration gas supply device 9, regeneration gas pressure reducing valve 91, fourth hose 92, power switch 10.

[0056] Catalytic plate 100. Detailed Implementation

[0057] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0058] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0059] For ease of description, spatial relative terms may be used in the text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0060] Figures 1 to 6An embodiment of this application provides a device for periodic testing and regeneration of a passive hydrogen recombination catalyst plate, comprising a support 1, a detection device 2, and a regeneration device 3. The detection device 2 includes a detection heating chamber 21, a first inlet assembly 22, and a first outlet assembly 23. The detection heating chamber 21 is mounted on the support 1. The first inlet assembly 22 is connected to the inlet end of the detection heating chamber 21. A first inlet flow meter 221 is provided between the first inlet assembly 22 and the inlet end of the detection heating chamber 21 to measure the flow rate of the gas entering the detection heating chamber 21. The first outlet assembly 23 includes a first outlet regulating pipe 231 and a first outlet analysis pipe 232, which are connected in parallel to the outlet end of the detection heating chamber 21. The first outlet regulating pipe 231 is provided with a first outlet flow regulating valve 233. The first outlet analysis pipe 232 is provided with a first outlet flow meter 234 and a hydrogen analyzer 235.

[0061] The regeneration device 3 includes a regeneration heating box 31, a second air inlet assembly 32, and a second air outlet assembly 33. The regeneration heating box 31 is mounted on the support 1 and located below the detection device 2. The second air inlet assembly 32 is connected to the air inlet end of the regeneration heating box 31. A second air inlet flow meter 329 is provided between the second air inlet assembly 32 and the air inlet end of the regeneration heating box 31 to measure the flow rate of the gas entering the regeneration heating box 31. The second air outlet assembly 33 is connected to the air outlet end of the regeneration heating box 31.

[0062] It is understood that the support bracket 1 provides a supporting foundation for the detection device 2 and the regeneration device 3. This application uses the detection device 2 to perform detection operations on the catalyst plate 100 and the regeneration device 3 to perform regeneration operations on the catalyst plate 100. That is, by setting up the detection device 2 and the regeneration device 3, this application separates the detection process and the regeneration process, which can be operated independently and synchronously, thereby improving the detection and regeneration efficiency. Furthermore, by arranging the detection device 2 and the regeneration device 3 vertically, the horizontal space occupied by the periodic testing and regeneration device of the passive hydrogen recombination catalyst plate can be reduced, thus making reasonable use of space. Meanwhile, the second air intake assembly 32 provides air intake for the regeneration operation of the regeneration heating chamber 31. After the regeneration operation of the regeneration heating chamber 31 is completed, the gas is discharged through the second air outlet assembly 33. The first air intake assembly 22 provides air intake for the detection operation in the detection heating chamber 21. The first air outlet assembly 23 discharges the gas after the detection operation is completed, and the hydrogen concentration information of the discharged gas is detected and analyzed by the hydrogen analyzer 235. In this application, by setting the first air outlet analysis pipeline 232 and the first air outlet regulating pipeline 231 in parallel, and setting the first air outlet flow meter 234 in the first air outlet analysis pipeline 232 and the first air outlet flow regulating valve 233 in the first air outlet regulating pipeline 231, the flow rate of the first air outlet regulating pipeline 231 can be adjusted by the first air outlet flow regulating valve 233, thereby adjusting the flow rate of the first air outlet analysis pipeline 232. The air tightness of the detection process is judged by the data change of the first air outlet flow meter 234, so as to avoid air leakage during the detection process from affecting the reliability of the test data.

[0063] like Figure 1 and Figure 2 As shown, the technical solution of this embodiment also includes a first receiving chamber 4, which is located above the regeneration heating box 31 and on the side of the detection heating box 21. The first receiving chamber 4 has a first receiving cavity and is provided with a first air inlet, a first air outlet, and a first exhaust port 24 communicating with the first receiving cavity. The first air inlet assembly 22 and the first air outlet assembly 23 are disposed in the first receiving chamber 4. The first air inlet assembly 22 is connected to the air inlet end of the detection heating box 21 through the first air inlet. It can be understood that the first receiving chamber 4 provides installation space for the first air outlet assembly 23 and the first air inlet assembly 22, and can also isolate and protect the components of the first air outlet assembly 23 and the second air outlet assembly 33 located in the receiving chamber, so as to avoid the pipeline exposure.

[0064] The first exhaust assembly 23 further includes a first exhaust pipe 236. The inlet end of the first exhaust regulating pipe 231 and the inlet end of the first exhaust analyzing pipe 232 are merged and connected to the outlet end of the first exhaust pipe 236. The inlet end of the first exhaust pipe 236 is connected to the outlet end of the detection heating chamber 21 through a first exhaust connection port. Thus, the inlet ends of the first exhaust regulating pipe 231 and the first exhaust analyzing pipe 232 can be connected to the outlet end of the detection heating chamber 21 through the first exhaust pipe 236. The first exhaust pipe 236 is equipped with a dryer. 237. Since water is generated from the reaction of hydrogen and oxygen during the detection process, the discharged gas contains a mixture of oil and water vapor. By setting a dryer 237 in the first outlet pipe 236, the water vapor in the discharged gas can be absorbed, thereby improving the accuracy of the hydrogen analyzer 235 in detecting and analyzing the hydrogen concentration in the discharged gas. The outlet end of the first outlet regulating pipe 231 and the outlet end of the first outlet analyzing pipe 232 are connected to the first exhaust port 24. In this way, the gas is discharged through a unified first exhaust port 24, which reduces the number of interfaces and allows direct connection to the external gas storage equipment through the first exhaust port 24.

[0065] like Figure 1 As shown, in the technical solution of this embodiment, the hydrogen analyzer 235 is disposed in the first receiving chamber 4, and the display screen of the hydrogen analyzer 235 is exposed outside the first receiving chamber 4; thus, the detection data and analysis results can be displayed intuitively through the display screen of the hydrogen analyzer 235.

[0066] like Figure 1 As shown, in this embodiment, the first inlet flow meter 221 and the first outlet flow meter 234 are located in the first receiving chamber 4 and are respectively exposed outside the first receiving chamber 4; the first outlet flow regulating valve 233 is located in the first receiving chamber 4, and the regulating handle of the first outlet flow regulating valve 233 is exposed outside the first receiving chamber 4. Thus, the flow data displayed by the first inlet flow meter 221 and the first outlet flow meter 234 can be directly observed, and the first outlet flow regulating valve 233 can be easily adjusted.

[0067] It should be noted that the first outlet flow regulating valve 233 can also be a solenoid valve. The solenoid valve is connected to the controller, and the opening degree of the first outlet flow regulating valve 233 can be controlled by the controller to achieve automatic flow regulation.

[0068] like Figure 3As shown, in the technical solution of this embodiment, the first air intake assembly 22 includes an air pipe 222, a detection air pipe 223, and a first air intake pipe 224. The air intake end of the air pipe 222 is used to connect to the air supply device 6, and the air supply device supplies air to the air pipe 222. The air pipe 222 is provided with an air shut-off valve 225 and an air regulating valve 226. The air shut-off valve 225 is used to control the opening and closing of the air pipe 222, and the air regulating valve 226 is used to regulate the air flow rate in the air pipe 222. The air shut-off valve 225 and the air regulating valve 226 are located in the first receiving chamber 4, and the adjusting handles of the air shut-off valve 225 and the air regulating valve 226 are exposed outside the first receiving chamber 4 for easy operation.

[0069] The inlet end of the detection gas pipeline 223 is used to connect to the detection gas supply device 7, which provides detection gas to the detection gas pipeline 223. The detection gas pipeline 223 is equipped with a detection gas shut-off valve 227 and a detection gas regulating valve 228. The detection gas shut-off valve 227 is used to control the opening and closing of the detection gas pipeline 223, and the detection gas regulating valve 228 is used to regulate the flow rate of the detection gas in the detection gas pipeline 223. The detection gas shut-off valve 227 and the detection gas regulating valve 228 are located in the first receiving chamber 4, and the adjusting handles of the detection gas shut-off valve 227 and the detection gas regulating valve 228 are exposed outside the first receiving chamber 4 for easy operation.

[0070] Air pipe 222 and detection air pipe 223 are connected in parallel, and the outlet end of air pipe 222 and the outlet end of detection air pipe 223 are merged and connected to the inlet end of first air inlet pipe 224. The outlet end of first air inlet pipe 224 is connected to the inlet end of detection heating box 21 through first air inlet connection port; wherein, first air inlet flow meter 221 is provided in first air inlet pipe 224.

[0071] refer to Figure 1 An air pressure reducing valve 61 and a first hose 62 are provided on the connecting pipe between the air supply device 6 and the air pipeline 222. The air supply device 6 supplies air. A test gas pressure reducing valve 71 and a second hose 72 are provided on the connecting pipe between the test gas supply device 7 and the test gas pipeline 223. The test gas provided by the test gas supply device 7 is airborne hydrogen standard gas, which refers to a gas containing a small amount of hydrogen in the air. For example, airborne hydrogen gas containing 3% hydrogen in the air is used.

[0072] Understandably, after placing the catalytic plate 100 into the detection heating chamber 21, the detection gas supply device 7 and the detection gas shut-off valve 227 are opened to supply detection gas into the detection heating chamber 21. The hydrogen in the detection gas reacts with oxygen on the surface of the catalytic plate 100 to generate water vapor. Then, the gas is discharged from the first outlet pipe 236 to the dryer 237. After being dried by the dryer 237, the gas enters the first outlet regulating pipe 231 and the first outlet analysis pipe 232. The hydrogen concentration information of the gas in the first outlet analysis pipe 232 is analyzed by the hydrogen analyzer 235 to confirm the effect of the catalytic plate 100. If the expected results are not achieved, the catalytic plate 100 needs to be placed in the regeneration heating chamber 31 for regeneration. If the expected results are achieved, the catalytic plate 100 is qualified and can be put into normal use. After the detection operation is completed, close the detection gas shut-off valve 227 and the detection gas supply device 7, then open the air shut-off valve 225 and the air supply device 6, and purge the pipeline with supplied air to reduce the hydrogen concentration in the pipeline. After the hydrogen concentration drops to the preset value, close the air shut-off valve 225 and the air supply device 6, and then remove the catalytic plate 100 from the detection heating box 21.

[0073] like Figure 2 and Figure 3 As shown, in the technical solution of this embodiment, the detection heating box 21 includes a detection box body 211, a catalyst bed 213, and a first preheating coil 214. The detection box body 211 has a detection chamber, and the cavity wall of the detection chamber is provided with a first heating tube 212. After the first heating tube 212 heats up, it transfers heat to the gas in the detection chamber, which can ensure that the catalyst bed 213, the preheating coil, and other pipelines are in a high-temperature environment during the detection operation. The catalyst bed 213 is located in the detection chamber and is used to place the catalyst plate 100. The gas outlet end of the catalyst bed 213 is connected to the gas inlet end of the first gas outlet pipeline 236. The first preheating coil 214 is located in the detection chamber, and one end of the first preheating coil 214 is connected to the first gas inlet pipeline 224, and the other end is connected to a blowing pipe 215. The blowing pipe 215 is inserted into the catalyst bed 213, and the blowing pipe 215 is provided with blowing holes for blowing air toward the catalyst plate 100. The first preheating coil 214 can preheat the gas blown into the catalytic bed 213 to improve the hydrogen removal effect and efficiency.

[0074] It should be noted that, Figure 2 Catalytic bed 213 is not shown. The gas outlet of the detection chamber 211 is located above the gas blowing pipe 215.

[0075] It should be noted that this application does not improve the structure of the catalyst bed 213; the catalyst bed 213 in the prior art can be used in this application.

[0076] For example, a reference value is determined. Before the start of the preliminary test, the air supply device 6 and the air pipeline 222 are turned on to blow in air. The gas flow rate is adjusted by the first outlet flow rate regulating valve 233 so that the flow rate of the first inlet flow meter 221 is 6.7L / min and the flow rate of the first outlet flow meter 234 is 0.5L / min.

[0077] During the later stages of the test, the opening of the first outlet flow regulating valve 233 was adjusted or maintained at the position corresponding to the above reference value, and the flow reading of the first inlet flow meter 221 was adjusted to 6.7 L / min. When the flow reading of the first outlet flow meter 234 was lower than 0.5 L / min, it proved that there was a gas leak, and the catalyst bed or pipeline was leaking, which caused the gas in the first outlet flow meter 234 to decrease and the reading to drop. If the flow reading of the first outlet flow meter 234 did not change to 0.5 L / min, then the catalyst bed or pipeline was normal and no leak had occurred.

[0078] It should be noted that, after multiple tests, the chemical reaction between the test gas and the air on the surface of the catalytic plate during the test has a small and negligible impact on the flow rate due to the temperature rise during the reaction.

[0079] like Figure 1 and Figure 2 As shown, the technical solution of this embodiment also includes a second receiving compartment 5, which is located below the first receiving compartment 4 and on the side of the regeneration heating box 31. The second receiving compartment 5 has a second receiving cavity and a second air inlet communicating with the second receiving cavity. A second air inlet assembly 32 is disposed in the second receiving compartment 5, and the second air inlet is connected to the air inlet of the regeneration heating box 31. It can be understood that the second receiving compartment 5 provides isolation and protection for the pipelines located inside it. It can also serve as a storage compartment for other items.

[0080] like Figure 2 and Figure 4 As shown, in the technical solution of this embodiment, the second air intake assembly 32 includes a nitrogen pipeline 321, a regeneration gas pipeline 322, and a second air intake pipeline 323. The air intake end of the nitrogen pipeline 321 is used to connect to the nitrogen supply device 8. The nitrogen pipeline 321 is provided with a nitrogen shut-off valve 324 and a nitrogen regulating valve 325. The nitrogen shut-off valve 324 is used to control the opening and closing of the nitrogen pipeline 321, and the nitrogen regulating valve 325 is used to regulate the nitrogen flow rate in the nitrogen pipeline 321. The nitrogen shut-off valve 324 and the nitrogen regulating valve 325 are located in the second receiving chamber 5, and the adjusting handles of the nitrogen shut-off valve 324 and the nitrogen regulating valve 325 are exposed outside the second receiving chamber 5.

[0081] The inlet end of the regenerated gas pipeline 322 is used to connect to the regenerated gas supply device 9; the regenerated gas pipeline 322 is equipped with a regenerated gas shut-off valve 326 and a regenerated gas regulating valve 327, wherein the regenerated gas shut-off valve 326 is used to control the opening and closing of the regenerated gas pipeline 322, and the regenerated gas regulating valve 327 is used to regulate the regenerated gas flow rate in the regenerated gas pipeline 322; the regenerated gas shut-off valve 326 and the regenerated gas regulating valve 327 are located in the second receiving chamber 5, and the regulating handles of the regenerated gas shut-off valve 326 and the regenerated gas regulating valve 327 are exposed outside the second receiving chamber 5;

[0082] Nitrogen line 321 and regeneration gas line 322 are connected in parallel, and the outlet ends of nitrogen line 321 and regeneration gas line 322 are merged and connected to the inlet end of second inlet line 323. The outlet end of second inlet line 323 is connected to the inlet end of regeneration heating box 31 through second inlet port. Second inlet flow meter 329 is provided in second inlet line 323. Second inlet line 323 is also provided with second preheating coil 328, which is located between second inlet flow meter 329 and regeneration heating box 31.

[0083] refer to Figure 4 A nitrogen pressure reducing valve 81 and a third flexible hose 82 are installed on the connecting pipe between the nitrogen supply device 8 and the nitrogen pipeline 321. The nitrogen supply device 8 supplies nitrogen. A regeneration gas pressure reducing valve 91 and a fourth flexible hose 92 are installed on the connecting pipe between the regeneration gas supply device 9 and the regeneration gas pipeline 322. The regeneration gas supplied by the regeneration gas supply device 9 is a nitrogen-hydrogen standard gas. The nitrogen-hydrogen standard gas refers to a mixed gas containing nitrogen and hydrogen; exemplarily, a nitrogen-hydrogen standard gas containing 5% hydrogen is used.

[0084] Understandably, after placing the catalytic converter 100 into the regeneration heating chamber 31, the nitrogen shut-off valve 324 and the nitrogen supply device 8 are opened to purge the pipeline with nitrogen. After purging for a certain period of time, the nitrogen shut-off valve 324 and the nitrogen supply device 8 are closed. The regeneration gas supply device 9 and the regeneration gas shut-off valve 326 are then opened to supply regeneration gas into the regeneration heating chamber 31. After purging for a certain period of time, the regeneration gas supply device 9 and the regeneration gas shut-off valve 326 are closed. The nitrogen shut-off valve 324 and the nitrogen supply device 8 are then opened to purge the pipeline with nitrogen. After purging for a certain period of time, the nitrogen shut-off valve 324 and the nitrogen supply device 8 are closed. After regeneration is complete, the regenerated catalytic converter 100 is removed.

[0085] It should be noted that this application uses a regeneration method in the prior art to regenerate the catalyst plate 100.

[0086] like Figure 2 , Figure 5 and Figure 6As shown, in this embodiment, the regeneration heating box 31 includes a regeneration box body 311 and a regeneration support 313. The regeneration box body 311 has a regeneration chamber, and the chamber wall of the regeneration chamber is provided with a second heating tube 312. The second heating tube 312 heats the gas in the regeneration chamber, so that the regeneration chamber is in a high-temperature environment. The regeneration support 313 is detachably disposed in the regeneration chamber, which facilitates the installation of more catalyst plates 100 on the regeneration support 313 and the removal of the regenerated catalyst plates 100. The regeneration support 313 includes a frame 3131, a fixing strip 3132, and multiple hinge assemblies 3133. The frame 3131 has a placement cavity, the fixing strip 3132 is disposed on the bottom wall of the placement cavity, and the hinge assemblies 3133 are rotatably disposed on the fixing strip 3132. The space between two adjacent hinge assemblies 3133 is used to place the catalyst plates 100. It can be understood that the hinge assembly 3133 is rotatably disposed to facilitate the placement and removal of the catalyst plates 100.

[0087] like Figure 5 and Figure 6 As shown, in the technical solution of this embodiment, there are two fixing strips 3132, which are parallel and spaced apart. The two ends of the hinge assembly 3133 are rotatably connected to the two fixing strips 3132 respectively. By setting two parallel and spaced fixing strips 3132, the connection stability of the hinge assembly 3133 can be improved. When the catalyst plate 100 is placed between two adjacent hinge assemblies 3133, the catalyst plate 100 abuts against the two fixing strips 3132, and the two fixing strips 3132 can improve the placement stability of the catalyst plate 100.

[0088] The regeneration support 313 also includes a central support bar 3134, which is disposed in the regeneration chamber and located between two fixing bars 3132. The side of the central support bar 3134 facing away from the bottom wall of the regeneration chamber is flush with the side of the fixing bar 3132 facing away from the bottom wall of the placement chamber. The side of the central support bar 3134 facing away from the bottom wall of the regeneration chamber and the side of the fixing bar 3132 facing away from the bottom wall of the regeneration chamber are used to support the catalyst plate 100 placed between the hinge assembly 3133.

[0089] It is understandable that by setting the central support bar 3134, the central support bar 3134 and the fixing bar 3132 together support the catalyst plate 100, improve the stability of the catalyst plate 100 and improve the bearing capacity of the regeneration support 313, so that more catalyst plates 100 can be placed and the efficiency can be improved.

[0090] like Figure 6As shown, in this embodiment, the hinge assembly 3133 includes a first hinge 31331 and a second hinge 31332. The first hinge 31331 is door-shaped and located between two fixing strips 3132. Both ends of the first hinge 31331 are rotatably connected to the two fixing strips 3132. The second hinge 31332 is also door-shaped, with the two fixing strips 3132 located between its two sides. Both ends of the second hinge 31332 are rotatably connected to the two fixing strips 3132. The size of the second hinge 31332 is smaller than that of the first hinge 31331, so that the second hinge 31332 fits over the first hinge 31331. This design allows the regeneration support 313 to be adapted to various catalytic plates 100 of different specifications. When a smaller catalytic plate 100 is placed, the first hinge 31331 abuts against the side of the catalytic plate 100; when a larger catalytic plate 100 is placed, the first hinge 31331 and the second hinge 31332 abut against the side of the catalytic plate 100 together.

[0091] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0092] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0093] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0094] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0095] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0096] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0097] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Since these modifications and variations fall within the scope of the claims and their equivalents, this application also intends to include these modifications and variations.

[0098] The above description describes specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A device for periodic testing and regeneration of a passive hydrogen recombination catalyst plate, characterized in that, include: Frame (1); The detection device (2) includes a detection heating box (21), a first air inlet assembly (22), and a first air outlet assembly (23). The detection heating box (21) is mounted on the bracket (1). The first air inlet assembly (22) is connected to the air inlet end of the detection heating box (21), and a first air inlet flow meter (221) is provided between the first air inlet assembly (22) and the air inlet end of the detection heating box (21). The first air outlet assembly (23) includes a first air outlet regulating pipe (231) and a first air outlet analysis pipe (232), which are connected in parallel to the air outlet end of the detection heating box (21). The first air outlet regulating pipe (231) is provided with a first air outlet flow regulating valve (233). The first air outlet analysis pipe (232) is provided with a first air outlet flow meter (234) and a hydrogen analyzer (235). The regeneration device (3) includes a regeneration heating box (31), a second air inlet assembly (32), and a second air outlet assembly (33). The regeneration heating box (31) is mounted on the bracket (1) and located below the detection device (2). The second air inlet assembly (32) is connected to the air inlet end of the regeneration heating box (31), and a second air inlet flow meter (329) is provided between the second air inlet assembly (32) and the air inlet end of the regeneration heating box (31). The second air outlet assembly (33) is connected to the air outlet end of the regeneration heating box (31).

2. The passive hydrogen recombination catalytic plate periodic testing and regeneration device according to claim 1, characterized in that, It also includes a first receiving chamber (4), which is located above the regeneration heating box (31) and on the side of the detection heating box (21); the first receiving chamber (4) has a first receiving cavity and is provided with a first air inlet, a first air outlet, and a first exhaust port (24) communicating with the first receiving cavity; the first air inlet assembly (22) and the first air outlet assembly (23) are located in the first receiving chamber (4); The first air intake assembly (22) is connected to the air intake end of the detection heating box (21) through the first air intake communication port; The first exhaust assembly (23) further includes a first exhaust pipe (236), the inlet end of the first exhaust regulating pipe (231) and the inlet end of the first exhaust analysis pipe (232) are combined and connected to the exhaust end of the first exhaust pipe (236), the inlet end of the first exhaust pipe (236) is connected to the exhaust end of the detection heating box (21) through the first exhaust communication port; the first exhaust pipe (236) is provided with a dryer (237); the exhaust end of the first exhaust regulating pipe (231) and the exhaust end of the first exhaust analysis pipe (232) are combined and connected to the first exhaust port (24).

3. The passive hydrogen recombination catalytic plate periodic testing and regeneration device according to claim 2, characterized in that, The hydrogen analyzer (235) is located in the first container (4), and the display screen of the hydrogen analyzer (235) is exposed outside the first container (4). And / or, the first inlet flow meter (221) and the first outlet flow meter (234) are disposed in the first receiving chamber (4) and are respectively exposed outside the first receiving chamber (4); And / or, the first outlet flow regulating valve (233) is located in the first receiving chamber (4), and the regulating handle of the first outlet flow regulating valve (233) is exposed outside the first receiving chamber (4).

4. The passive hydrogen recombination catalytic plate periodic testing and regeneration device according to claim 2, characterized in that, The first intake assembly (22) includes: An air duct (222) is provided, the air inlet of which is used to connect to an air supply device (6); the air duct (222) is provided with an air shut-off valve (225) and an air regulating valve (226); the air shut-off valve (225) is used to control the opening and closing of the air duct (222), and the air regulating valve (226) is used to regulate the air flow rate in the air duct (222); the air shut-off valve (225) and the air regulating valve (226) are located in the first receiving chamber (4), and the adjusting handles of the air shut-off valve (225) and the air regulating valve (226) are exposed outside the first receiving chamber (4); A detection gas pipeline (223) is provided, the inlet end of which is used to connect to a detection gas supply device (7); the detection gas pipeline (223) is provided with a detection gas shut-off valve (227) and a detection gas regulating valve (228), wherein the detection gas shut-off valve (227) is used to control the opening and closing of the detection gas pipeline (223), and the detection gas regulating valve (228) is used to regulate the flow rate of the detection gas in the detection gas pipeline (223); the detection gas shut-off valve (227) and the detection gas regulating valve (228) are located in the first receiving chamber (4), and the adjusting handle of the detection gas shut-off valve (227) and the adjusting handle of the detection gas regulating valve (228) are exposed outside the first receiving chamber (4); The first air intake pipe (224) is connected in parallel with the air pipe (222) and the detection air pipe (223). The outlet end of the air pipe (222) and the outlet end of the detection air pipe (223) are connected to the inlet end of the first air intake pipe (224). The outlet end of the first air intake pipe (224) is connected to the inlet end of the detection heating box (21) through the first air intake connection port. The first air intake flow meter (221) is located in the first air intake pipe (224).

5. The passive hydrogen recombination catalytic plate periodic testing and regeneration device according to claim 4, characterized in that, The detection heating box (21) includes: The detection chamber (211) has a detection cavity, and the cavity wall of the detection cavity is provided with a first heating tube (212); A catalyst bed (213) is disposed in the detection chamber and is used to place the catalyst plate (100); the gas outlet end of the catalyst bed (213) is connected to the gas inlet end of the first gas outlet pipe (236); A first preheating coil (214) is disposed in the detection chamber, and one end of the first preheating coil (214) is connected to the first air inlet pipe (224), and the other end is connected to a blowing pipe (215). The blowing pipe (215) is inserted into the catalyst bed (213), and the blowing pipe (215) is provided with blowing holes for blowing air toward the catalyst plate (100).

6. The passive hydrogen recombination catalytic plate periodic testing and regeneration device according to claim 2, characterized in that, It also includes a second receiving chamber (5), which is located below the first receiving chamber (4) and on the side of the regeneration heating box (31); the second receiving chamber (5) has a second receiving cavity and is provided with a second air inlet communicating with the second receiving cavity; the second air inlet assembly (32) is provided in the second receiving chamber (5), and the second air inlet is connected to the air inlet end of the regeneration heating box (31).

7. The passive hydrogen recombination catalytic plate periodic testing and regeneration device according to claim 6, characterized in that, The second intake assembly (32) includes: A nitrogen pipeline (321) is provided, the inlet end of which is used to connect to a nitrogen supply device (8); the nitrogen pipeline (321) is provided with a nitrogen shut-off valve (324) and a nitrogen regulating valve (325); the nitrogen shut-off valve (324) is used to control the opening and closing of the nitrogen pipeline (321), and the nitrogen regulating valve (325) is used to regulate the nitrogen flow rate in the nitrogen pipeline (321); the nitrogen shut-off valve (324) and the nitrogen regulating valve (325) are located in the second receiving chamber (5), and the adjusting handles of the nitrogen shut-off valve (324) and the nitrogen regulating valve (325) are exposed outside the second receiving chamber (5); A regenerated gas pipeline (322) is provided, the inlet end of which is used to connect to a regenerated gas supply device (9); the regenerated gas pipeline (322) is provided with a regenerated gas shut-off valve (326) and a regenerated gas regulating valve (327), wherein the regenerated gas shut-off valve (326) is used to control the opening and closing of the regenerated gas pipeline (322), and the regenerated gas regulating valve (327) is used to regulate the regenerated gas flow rate in the regenerated gas pipeline (322); the regenerated gas shut-off valve (326) and the regenerated gas regulating valve (327) are located in the second receiving chamber (5), and the regulating handles of the regenerated gas shut-off valve (326) and the regenerated gas regulating valve (327) are exposed outside the second receiving chamber (5); The second air inlet pipe (323) is provided, wherein the nitrogen pipe (321) and the regeneration gas pipe (322) are connected in parallel, and the outlet end of the nitrogen pipe (321) and the outlet end of the regeneration gas pipe (322) are combined and connected to the inlet end of the second air inlet pipe (323). The outlet end of the second air inlet pipe (323) is connected to the inlet end of the regeneration heating box (31) through the second air inlet port. The second air inlet flow meter (329) is provided in the second air inlet pipe (323). The second air inlet pipe (323) is also provided with a second preheating coil (328), which is located between the second air inlet flow meter (329) and the regeneration heating box (31).

8. The passive hydrogen recombination catalytic plate periodic testing and regeneration device according to claim 7, characterized in that, The regenerative heating box (31) includes: The regeneration box (311) has a regeneration chamber, and the chamber wall of the regeneration chamber is provided with a second heating tube (312); A regeneration support (313) is detachably disposed within the regeneration chamber; the regeneration support (313) includes a frame (3131), a fixing strip (3132), and a plurality of hinge assemblies (3133). The frame (3131) has a placement cavity, the fixing strip (3132) is disposed on the bottom wall of the placement cavity, and the hinge assembly (3133) is rotatably disposed on the fixing strip (3132); wherein, the catalyst plate (100) is placed between two adjacent hinge assemblies (3133).

9. The passive hydrogen recombination catalytic plate periodic testing and regeneration device according to claim 8, characterized in that, The number of fixing strips (3132) is two, and the two fixing strips (3132) are parallel and spaced apart; the two ends of the hinge assembly (3133) are respectively rotatably connected to the two fixing strips (3132); The regeneration support (313) further includes a central support strip (3134) disposed within the regeneration chamber and located between the two fixing strips (3132). The side of the central support strip (3134) facing away from the bottom wall of the regeneration chamber is flush with the side of the fixing strip (3132) facing away from the bottom wall of the placement chamber. The side of the central support strip (3134) facing away from the bottom wall of the regeneration chamber and the side of the fixing strip (3132) facing away from the bottom wall of the regeneration chamber are used to support the catalyst plate (100) placed between the hinge assemblies (3133).

10. The device for periodic testing and regeneration of the catalytic plate of the passive hydrogen recombination unit according to claim 9, characterized in that, The hinge assembly (3133) includes: The first hinge (31331) is door-shaped and located between the two fixing strips (3132); the two ends of the first hinge (31331) are respectively rotatably connected to the two fixing strips (3132); The second hinge (31332) is door-shaped, and the two fixing strips (3132) are located between the two sides of the second hinge (31332). The two ends of the second hinge (31332) are respectively rotatably connected to the two fixing strips (3132). The size of the second hinge (31332) is smaller than that of the first hinge (31331) so that the second hinge (31332) fits onto the first hinge (31331).

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