A functional test device for hydrogen flame detectors

Abstract

A hydrogen flame detector function test device relates to a simulation device of a real hydrogen fuel combustion place, in order to solve the problem that the existing test device cannot simulate the real flame of hydrogen combustion, resulting in poor authenticity of evaluating the sensitivity and response performance of the hydrogen flame detector. The present application comprises a hydrogen storage gas supply tank, a flame simulation box and a handheld ignition controller. The hydrogen storage gas supply tank provides suitable hydrogen fuel for the flame simulation box; the flame simulation box can generate real hydrogen flame by control adjustment; the handheld ignition controller can be used for remote ignition. The beneficial effect is that the hydrogen flame detector provides the hydrogen combustion flame scene in the real environment, which is used for the function test of the sensor sensitivity; different flame forms and different fire sizes can be provided; an effective detection device is provided for the detection accuracy of the hydrogen flame detector function test; the modular box design is convenient for scene test.

Description

Technical Field

[0001] This invention relates to a device for simulating a real hydrogen fuel combustion environment. Background Technology

[0002] With the rapid development of the hydrogen energy industry, the safe utilization of hydrogen energy is attracting increasing attention. Due to the thermophysical properties and combustion characteristics of hydrogen, leaked hydrogen can easily cause fires or explosions. Hydrogen deflagration can lead to the rapid expansion of the combustion zone and a rapid increase in pressure in a confined space. The high-speed detonation wave generated by hydrogen deflagration may have a huge impact on the environment outside the combustion zone, accompanied by the rapid spread of high-temperature gases. Hydrogen flames are pale blue and difficult to detect, while hydrogen flame detectors can detect fires immediately, providing alarm support for fire fighting.

[0003] To verify the functionality of hydrogen flame detectors, a real flame generator is required. Currently, common flame detector testing devices include rechargeable flame simulators, which can simultaneously provide ultraviolet and infrared radiation energy, but cannot detect hydrogen flame sensors and are not real flames; there are also flame detector testing devices using butane as the combustion medium, which can conduct fire response tests on infrared and ultraviolet flame detectors; and there are fixed laboratory point-type flame detector calibration devices, which use methane combustion to generate the test flame. None of these are suitable for hydrogen as a medium. According to research, there is currently no professional hydrogen real flame generator, which affects the use of real flame for hydrogen flame detector testing. Summary of the Invention

[0004] The purpose of this invention is to solve the problem that existing test devices cannot simulate the real flame of hydrogen combustion, resulting in poor realism in evaluating the sensitivity and response performance of hydrogen flame detectors. A functional test device for hydrogen flame detectors is proposed.

[0005] The hydrogen flame detector functional test device of the present invention includes a flame simulation box, a handheld ignition controller, a hydrogen storage and supply box, interconnected hydrogen hoses, interconnected control cables, and an explosion-proof control box;

[0006] The hydrogen storage and supply tank has its gas outlet connected to the gas inlet of the flame simulation box via interconnected hydrogen hoses. The hydrogen storage and supply tank is used to provide suitable hydrogen fuel to the flame simulation box.

[0007] The explosion-proof control box is equipped with a display device on its door for displaying leakage alarms, ignition, and combustion status.

[0008] Flame simulation chamber, used to generate realistic hydrogen flames;

[0009] The ignition command output of the handheld ignition controller is connected to the ignition command input of the explosion-proof control box via an interconnection control cable. The handheld ignition controller is used to provide remote ignition for generating a realistic hydrogen flame in the flame simulation box.

[0010] Furthermore, the hydrogen storage and supply tank includes a skid assembly, a gas cylinder, a gas cylinder valve, branch hoses, branch valves, a manifold, a first pressure gauge, a multi-stage pressure reducing device, a second pressure gauge, and a main supply valve.

[0011] The gas cylinder is used to store hydrogen and is fixed inside the skid assembly.

[0012] The hydrogen outlet of the gas cylinder is connected to one end of a branch valve via a branch hose, and the other end of the branch valve converges at the inlet of the manifold.

[0013] The cylinder valve is installed on the branch hose of the hydrogen outlet of the cylinder;

[0014] One end of the main gas supply valve is connected to the manifold outlet of the manifold. The main gas supply valve is used to shut off the hydrogen supply in the pipeline at any time. The other end of the main gas supply valve is the gas supply outlet A. Gas supply outlet A is connected to one end of the interconnected hydrogen hose.

[0015] The multi-stage pressure reducing device is installed on the manifold outlet pipeline, and displays the pressure at the manifold inlet using a first pressure gauge and the pressure at the manifold outlet using a second pressure gauge.

[0016] Furthermore, the flame simulation chamber includes a chamber assembly, a flow regulating valve, a flow meter, a third pressure gauge, an overpressure protection switch, a first-stage safety shut-off solenoid valve, a leakage test switch, a second-stage safety shut-off solenoid valve, a shut-off valve, a fire baffle, a replaceable flame cover, and a hydrogen flame generator.

[0017] The front and rear sides of the enclosure assembly are detachable movable door panels, which are equipped with key locks. Louvered ventilation openings are installed on both sides of the enclosure assembly for natural ventilation. The top of the enclosure assembly is connected to a replaceable flame hood via a flange structure. A round hole is opened on the top of the enclosure assembly for a hydrogen flame generator to extend out of the top of the enclosure assembly. The hydrogen flame generator is connected to the flange on the top of the enclosure assembly via the flange structure.

[0018] The fire baffle is installed on top of the hydrogen flame generator;

[0019] The flow regulating valve, flow meter, third pressure gauge, overpressure protection switch, first-stage safety shut-off solenoid valve, leakage test switch, second-stage safety shut-off solenoid valve and shut-off valve are respectively installed inside the housing assembly;

[0020] The hydrogen flame generator is used to generate a real hydrogen flame. The hydrogen flame generator includes a burner inlet C, an ignition electrode D, and a flame detection electrode E. The burner inlet C is connected to one end of a shut-off valve, and the ignition electrode D and the flame detection electrode E are electrically connected to the explosion-proof control box.

[0021] One end of the flow regulating valve is connected to the other end of the shut-off valve; the other end of the flow regulating valve is a gas supply inlet B, and the gas supply inlet B is connected to the other end of the interconnected hydrogen hose.

[0022] The flow meter, second pressure gauge, overpressure protection switch, first-stage safety shut-off solenoid valve, leakage test switch, and second-stage safety shut-off solenoid valve are sequentially installed on the pipeline between one end of the flow regulating valve and the other end of the shut-off valve. The flow regulating valve is used to regulate the gas flow rate. The flow meter displays the gas flow rate in real time, and its flow signal output is connected to the flow signal input of the explosion-proof control box. The first-stage and second-stage safety shut-off solenoid valves are two solenoid valves connected in series to ensure safe shut-off of the hydrogen pipeline. The first electromagnetic signal input of the first-stage safety shut-off solenoid valve is connected to the first electromagnetic signal output of the explosion-proof control box. The second electromagnetic signal input of the second-stage safety shut-off solenoid valve is connected to the second electromagnetic signal output of the explosion-proof control box. The overpressure protection switch monitors whether the pipeline pressure exceeds the limit, and its pressure protection control signal input is connected to the pressure protection control signal output of the explosion-proof control box. The leakage test switch shuts off the pipeline in case of hydrogen leakage, and its leakage control signal input is connected to the leakage control signal output of the explosion-proof control box.

[0023] Furthermore, the hydrogen flame generator outlet is equipped with multi-specification flame nozzles, which are connected to the burner inside the hydrogen flame generator via threads.

[0024] Furthermore, the flame simulation box is equipped with a flame arrester inside;

[0025] The flame arrester is installed between the burner inlet C of the hydrogen flame generator and the shut-off valve to prevent backfire.

[0026] Furthermore, the fire baffle adopts a U-shaped structure, and the height of the fire baffle is adjustable.

[0027] Furthermore, the test apparatus also includes interconnecting sensor signal cables, a first hydrogen leak detector, and a second hydrogen leak detector;

[0028] The first hydrogen leak detector is installed inside the hydrogen storage and supply tank by bolts. The first hydrogen leak detector is used to monitor in real time whether there is a hydrogen leak inside the hydrogen storage and supply tank. The first sensor signal output terminal of the first hydrogen leak detector is connected to the first sensor signal input terminal of the explosion-proof control box through an interconnecting sensor signal cable.

[0029] The second hydrogen leak detector is bolted inside the flame simulation box and is used to monitor whether hydrogen is leaking inside the flame simulation box in real time. The second sensor signal output terminal of the second hydrogen leak detector is connected to the second sensor signal input terminal of the explosion-proof control box.

[0030] Furthermore, the experimental setup also includes four wheels;

[0031] All four wheels are located at the bottom of the flame simulation box;

[0032] Two of the four movable wheels are fixed wheels, and the two fixed wheels are equipped with brakes; the other two of the four movable wheels are swivel wheels.

[0033] Furthermore, the interconnected hydrogen hose is made of metal and has a length greater than 30 meters.

[0034] The beneficial effects of this invention are as follows:

[0035] 1. It can provide a real-world hydrogen combustion flame scenario for hydrogen flame detectors, serving as a functional testing device for sensor sensitivity, thus improving the realism of evaluating the sensitivity and response performance of hydrogen flame detectors.

[0036] 2. It can provide test scenarios with different flame patterns and fire sizes;

[0037] 3. Improved the detection accuracy of hydrogen flame detector functional tests;

[0038] 4. Modular enclosure design facilitates site relocation testing. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the overall structure of a hydrogen flame detector functional test device as described in Specific Embodiment 1;

[0040] Figure 2 This is a schematic diagram of the hydrogen storage and supply tank in Specific Implementation Method 1;

[0041] Figure 3 This is a schematic diagram of the flame simulation box in Specific Implementation Method 1;

[0042] Among them, 1 is the flame simulation box; 2 is the handheld ignition controller; 3 is the hydrogen storage and supply box; 4 is the interconnected hydrogen hose; 5 is the interconnected sensor signal cable; 6 is the interconnected control cable; and 7 is the explosion-proof control box.

[0043] 3-1 Skid assembly; 3-2 Gas cylinder; 3-3 Gas cylinder valve; 3-4 Branch hose; 3-5 First hydrogen leak detector; 3-6 Branch valve; 3-7 Manifold; 3-8 First pressure gauge; 3-9 Multi-stage pressure reducing device; 3-10 Second pressure gauge; 3-11 Main gas supply valve;

[0044] 1-1 is the housing assembly; 1-2 is the flow regulating valve; 1-3 is the flow meter; 1-4 is the third pressure gauge; 1-5 is the overpressure protection switch; 1-6 is the first-stage safety shut-off solenoid valve; 1-7 is the leakage test switch; 1-8 is the second-stage safety shut-off solenoid valve; 1-9 is the shut-off valve; 1-10 is the flame arrester; 1-11 is the flame baffle; 1-12 is the replaceable flame shield; 1-13 is the hydrogen flame generator.

[0045] Port A is the gas outlet; Port B is the gas inlet; Port C is the burner inlet; Port D is the ignition electrode; and Port E is the flame detector electrode. Detailed Implementation

[0046] Specific Implementation Method 1: Combination Figures 1 to 3 This embodiment describes a functional test device for a hydrogen flame detector. The test device includes a flame simulation box 1, a handheld ignition controller 2, a hydrogen storage and supply box 3, interconnected hydrogen hoses 4, interconnected control cables 6, and an explosion-proof control box 7.

[0047] The hydrogen storage and supply tank 3 has its gas supply outlet connected to the gas supply inlet of the flame simulation box 1 via an interconnecting hydrogen hose 4. The hydrogen storage and supply tank 3 is used to provide suitable hydrogen fuel to the flame simulation box 1.

[0048] The explosion-proof control box 7 is equipped with a display device on its door for displaying leakage alarms, ignition and combustion status;

[0049] Flame Simulation Box 1, used to generate a realistic hydrogen flame;

[0050] The ignition command output of the handheld ignition controller 2 is connected to the ignition command input of the explosion-proof control box 7 via the interconnection control cable 6. The handheld ignition controller 2 is used to provide remote ignition for generating a real hydrogen flame for the flame simulation box 1.

[0051] In this embodiment, the explosion-proof control box 7 is installed inside the flame simulation box 1; the flame simulated by the hydrogen flame detector functional test device is a naturally spreading flame, the flame and control equipment are arranged in separate areas, which is convenient to move and suitable for outdoor testing, and the flame height is adjustable.

[0052] This test device can simulate an accidental fire caused by a pipeline leak in a hydrogen fuel site. This scenario can be used by manufacturers developing hydrogen flame detectors to conduct real fire detection function tests in the laboratory, providing a reliable test method for evaluating the sensitivity and response performance of hydrogen flame detectors.

[0053] The test device adopts a modular structure design, which facilitates field transfer testing; it can provide hydrogen combustion flame scenarios in a real environment for hydrogen flame detectors, serving as a functional test device for sensor sensitivity; it can provide test scenarios with different flame shapes and fire sizes; and it improves the detection accuracy of hydrogen flame detector functional tests.

[0054] In a preferred embodiment, the hydrogen storage and supply tank 3 includes a skid assembly 3-1, a gas cylinder 3-2, a gas cylinder valve 3-3, a branch hose 3-4, a branch valve 3-6, a manifold 3-7, a first pressure gauge 3-8, a multi-stage pressure reducing device 3-9, a second pressure gauge 3-10, and a main gas supply valve 3-11.

[0055] The gas cylinder 3-2 is used to store hydrogen, and the gas cylinder 3-2 is fixed inside the skid assembly 3-1;

[0056] The hydrogen outlet of the gas cylinder 3-2 is connected to one end of the branch valve 3-6 via the branch hose 3-4, and the other end of the branch valve 3-6 converges at the inlet of the manifold 3-7.

[0057] The gas cylinder valve 3-3 is installed on the branch hose 3-4 of the hydrogen outlet of the gas cylinder 3-2;

[0058] One end of the main gas supply valve 3-11 is connected to the manifold outlet of the manifold 3-7. The main gas supply valve 3-11 is used to shut off the hydrogen supply in the pipeline at any time. The other end of the main gas supply valve 3-11 is the gas supply outlet A. The gas supply outlet A is connected to one end of the interconnected hydrogen hose 4.

[0059] The multi-stage pressure reducing device 3-9 is installed on the manifold outlet pipeline of manifold 3-7, and displays the pressure at the manifold inlet of manifold 3-7 through the first pressure gauge 3-8 and the pressure at the manifold outlet of manifold 3-7 through the second pressure gauge 3-10.

[0060] In this embodiment, hydrogen cylinders 3-2 are standard 40L steel cylinders, totaling four, all of which are fixed to the skid assembly 3-1 frame by semi-circular pressure plates. The outlet of each hydrogen cylinder 3-2 is equipped with a cylinder valve 3-3, which is connected to a branch ball valve 3-6 via a hose 3-4. The manifold 3-7 collects the ball valves 3-6 from each branch into a main pipeline for gas delivery. The pressure reducing device 3-9 is installed on the outlet pipeline of the manifold 3-7 to regulate pressure. The pressure at the inlet of the manifold 3-7 is displayed by a first pressure gauge 3-8, and the pressure at the outlet of the manifold 3-7 is displayed by a second pressure gauge 3-10. The main gas supply valve 3-11 is installed at the rear end of the pressure reducing device 3-9 to shut off the hydrogen supply in the pipeline at any time. The hydrogen leak detector 3-5 is bolted to the housing frame to monitor for hydrogen leaks in real time, ensuring safety.

[0061] In this embodiment, an overpressure protection measure is provided. When the gas supply pressure exceeds the downstream allowable pressure, the gas fuel supply will be interlocked and cut off immediately.

[0062] In a preferred embodiment, the flame simulation chamber 1 includes a chamber assembly 1-1, a flow regulating valve 1-2, a flow meter 1-3, a second pressure gauge 1-4, an overpressure protection switch 1-5, a first-stage safety shut-off solenoid valve 1-6, a leakage test switch 1-7, a second-stage safety shut-off solenoid valve 1-8, a shut-off valve 1-9, a fire baffle 1-11, a replaceable flame hood 1-12, and a hydrogen flame generator 1-13;

[0063] The front and rear sides of the housing assembly 1-1 are detachable movable door panels, which are equipped with key locks. Louvered ventilation openings are installed on both sides of the housing assembly 1-1 for natural ventilation. The top of the housing assembly 1-1 is connected to the replaceable flame hood 1-12 via a flange structure. A round hole is opened on the top of the housing assembly 1-1 for the hydrogen flame generator 1-13 to extend out of the top of the housing assembly 1-1. The hydrogen flame generator 1-13 is connected to the flange on the top of the housing assembly 1-1 via the flange structure.

[0064] The fire baffle 1-11 is installed on top of the hydrogen flame generator 1-13;

[0065] The flow regulating valve 1-2, flow meter 1-3, third pressure gauge 1-4, overpressure protection switch 1-5, first-stage safety shut-off solenoid valve 1-6, leakage test switch 1-7, second-stage safety shut-off solenoid valve 1-8, and shut-off valve 1-9 are respectively installed inside the housing assembly 1-1.

[0066] The hydrogen flame generator 1-13 is used to generate a real hydrogen flame. The hydrogen flame generator 1-13 includes a burner inlet C, an ignition electrode D, and a flame detection electrode E. The burner inlet C is connected to one end of the shut-off valve 1-9, and the ignition electrode D and the flame detection electrode E are electrically connected to the explosion-proof control box 7, respectively.

[0067] One end of the flow regulating valve 1-2 is connected to the other end of the shut-off valve 1-9; the other end of the flow regulating valve 1-2 is the gas supply inlet B, and the gas supply inlet B is connected to the other end of the interconnected hydrogen hose 4.

[0068] The flow meter 1-3, the third pressure gauge 1-4, the overpressure protection switch 1-5, the first-stage safety shut-off solenoid valve 1-6, the leakage test switch 1-7, and the second-stage safety shut-off solenoid valve 1-8 are sequentially installed on the pipeline between one end of the flow regulating valve 1-2 and the other end of the shut-off valve 1-9. The flow regulating valve 1-2 is used to regulate the gas flow rate; the flow meter 1-3 is used to display the gas flow rate value in real time, and the flow signal output terminal of the flow meter 1-3 is connected to the flow signal input terminal of the explosion-proof control box 7; the first-stage safety shut-off solenoid valve 1-6 and the second-stage safety shut-off solenoid valve 1-8 are two solenoid valves connected in series to ensure the safety of the hydrogen pipeline. Safety shut-off: The first electromagnetic signal input terminal of the first-stage safety shut-off solenoid valve 1-6 is connected to the first electromagnetic signal output terminal of the explosion-proof control box 7; the second electromagnetic signal input terminal of the second-stage safety shut-off solenoid valve 1-8 is connected to the second electromagnetic signal output terminal of the explosion-proof control box 7; the overpressure protection switch 1-5 is used to monitor whether the pipeline pressure is overpressured, and the pressure protection control signal input terminal of the overpressure protection switch 1-5 is connected to the pressure protection control signal output terminal of the explosion-proof control box 7; the leakage test switch 1-7 is used to shut off the pipeline in case of hydrogen leakage, and the leakage control signal input terminal of the leakage test switch 1-7 is connected to the leakage control signal output terminal of the explosion-proof control box 7.

[0069] In this embodiment, louvered ventilation openings are installed on both sides of the enclosure assembly 1-1 to allow for natural ventilation and ensure a safe internal environment; a rectangular square tube mounting frame is installed inside the enclosure assembly 1-1 for mounting other equipment accessories; the entire enclosure assembly 1-1 is made of 304 stainless steel, which has strong corrosion resistance.

[0070] The flow regulating valve 1-2 is installed on the hydrogen pipeline to regulate the gas flow rate, and the gas flow rate value is displayed in real time by the flow meter 1-3; the first-stage safety shut-off solenoid valve 1-6 and the second-stage safety shut-off solenoid valve 1-8 are connected in series to ensure safe shut-off of the hydrogen pipeline; the overpressure protection switch 1-5 is installed at the front end of the first-stage safety shut-off solenoid valve to monitor whether the pressure regulator output pressure is over-pressured; the leakage test switch 1-7 is installed after the first-stage safety shut-off solenoid valve to detect whether the solenoid valve has internal leakage; the explosion-proof control box 7 is installed on the frame inside the box assembly 1-1 and has an explosion-proof structure; the hydrogen flame generator 1-13 is an integrated structure containing an ignition electrode and a flame detection electrode to generate a real flame; the hydrogen leak detector 1-14 is fixed to the box frame with bolts; the outlet of the hydrogen flame generator 1-13 is equipped with multi-specification flame nozzles 1-12, which are connected to the hydrogen flame generator 1-13 by threads; the flame baffle 1-11 is a telescopic structure and is connected to the box assembly 1-1 by a flange. Valves 1-9 are the main air shut-off valves, used to regulate flow and inspect for leaks in the solenoid valves.

[0071] In a preferred embodiment, the outlet of the hydrogen flame generator 1-13 is equipped with multi-specification flame nozzles, which are connected to the burner inside the hydrogen flame generator 1-13 via threads.

[0072] In this embodiment, the hydrogen flame generator 1-13 can generate a maximum real flame height of 0.7m, and the simulated flame is a natural diffusion combustion flame.

[0073] In a preferred embodiment, the flame simulation box 1 is equipped with a flame arrester 1-10 inside;

[0074] The flame arrester 1-10 is installed between the burner inlet C of the hydrogen flame generator 1-13 and the shut-off valve 1-9 to prevent backfire.

[0075] In this embodiment, the test device is designed with a variety of safety protection measures, including a hydrogen leak detector, all selected products are explosion-proof, it has a monitoring function to check whether the flame ignition is successful, and it is designed to separate gas and open flame.

[0076] In a preferred embodiment, the fire baffle 1-11 adopts a U-shaped structure, and the height of the fire baffle 1-11 is adjustable.

[0077] In a preferred embodiment, the test apparatus further includes an interconnecting sensor signal cable 5, a first hydrogen leak detector 3-5, and a second hydrogen leak detector 1-14;

[0078] The first hydrogen leak detector 3-5 is installed inside the hydrogen storage and supply tank 3 by bolts. The first hydrogen leak detector 3-5 is used to monitor in real time whether the hydrogen inside the hydrogen storage and supply tank 3 is leaking. The first sensor signal output terminal of the first hydrogen leak detector 3-5 is connected to the first sensor signal input terminal of the explosion-proof control box 7 through the interconnecting sensor signal cable 5.

[0079] The second hydrogen leak detector 1-14 is installed inside the flame simulation box 1 by bolts. The second hydrogen leak detector 1-14 is used to monitor whether hydrogen is leaking inside the flame simulation box 1 in real time. The second sensor signal output terminal of the second hydrogen leak detector 1-14 is connected to the second sensor signal input terminal of the explosion-proof control box 7.

[0080] In a preferred embodiment, the testing apparatus further includes four wheels;

[0081] All four wheels are located at the bottom of the flame simulation box 1;

[0082] Two of the four movable wheels are fixed wheels, and the two fixed wheels are equipped with brakes; the other two of the four movable wheels are swivel wheels.

[0083] In a preferred embodiment, the interconnected hydrogen hose 4 is made of metal and has a length greater than 30 meters.

[0084] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A functional test device for a hydrogen flame detector, the test device comprising a flame simulation box (1), a handheld ignition controller (2), a hydrogen storage and supply box (3), interconnected hydrogen hoses (4), interconnected control cables (6), and an explosion-proof control box (7). The outlet of the hydrogen storage and supply tank (3) is connected to the inlet of the flame simulation box (1) via an interconnecting hydrogen hose (4). The hydrogen storage and supply tank (3) is used to provide suitable hydrogen fuel to the flame simulation box (1). The explosion-proof control box (7) is equipped with a display device on its door for displaying leakage alarms and ignition and combustion status; Flame simulation chamber (1) is used to generate a real hydrogen flame; The ignition command output terminal of the handheld ignition controller (2) is connected to the ignition command input terminal of the explosion-proof control box (7) via the interconnection control cable (6). The handheld ignition controller (2) is used to provide remote ignition for the flame simulation box (1) to generate a real hydrogen flame. The hydrogen storage and supply tank (3) includes a skid assembly (3-1), a gas cylinder (3-2), a gas cylinder valve (3-3), a branch hose (3-4), a branch valve (3-6), a manifold (3-7), a first pressure gauge (3-8), a multi-stage pressure reducing device (3-9), a second pressure gauge (3-10), and a main gas supply valve (3-11). The gas cylinder (3-2) is used to store hydrogen gas, and the gas cylinder (3-2) is fixed inside the skid assembly (3-1); The hydrogen outlet of the gas cylinder (3-2) is connected to one end of the branch valve (3-6) via a branch hose (3-4), and the other end of the branch valve (3-6) converges at the inlet of the manifold (3-7). The gas cylinder valve (3-3) is installed on the branch hose (3-4) of the hydrogen outlet of the gas cylinder (3-2); One end of the main gas supply valve (3-11) is connected to the manifold outlet of the manifold (3-7). The main gas supply valve (3-11) is used to shut off the hydrogen supply in the pipeline at any time. The other end of the main gas supply valve (3-11) is the gas supply outlet A. The gas supply outlet A is connected to one end of the interconnected hydrogen hose (4). The multi-stage pressure reducing device (3-9) is installed on the manifold outlet pipeline of the manifold (3-7), and displays the pressure at the manifold inlet of the manifold (3-7) through the first pressure gauge (3-8) and the pressure at the manifold outlet of the manifold (3-7) through the second pressure gauge (3-10); Its features are, The flame simulation chamber (1) includes a chamber assembly (1-1), a flow regulating valve (1-2), a flow meter (1-3), a third pressure gauge (1-4), an overpressure protection switch (1-5), a first-stage safety shut-off solenoid valve (1-6), a leakage test switch (1-7), a second-stage safety shut-off solenoid valve (1-8), a shut-off valve (1-9), a fire baffle (1-11), a replaceable flame cover (1-12), and a hydrogen flame generator (1-13). The front and rear sides of the housing assembly (1-1) are detachable movable door panels, which are equipped with key locks. Louvered ventilation openings are installed on both sides of the housing assembly (1-1) for natural ventilation. The top of the housing assembly (1-1) is connected to the replaceable flame hood (1-12) via a flange structure. A round hole is opened on the top of the housing assembly (1-1) for the hydrogen flame generator (1-13) to extend out of the top of the housing assembly (1-1). The hydrogen flame generator (1-13) is connected to the flange on the top of the housing assembly (1-1) via the flange structure. The fire baffle (1-11) is located on top of the hydrogen flame generator (1-13); The flow regulating valve (1-2), flow meter (1-3), third pressure gauge (1-4), overpressure protection switch (1-5), first-stage safety shut-off solenoid valve (1-6), leakage test switch (1-7), second-stage safety shut-off solenoid valve (1-8) and shut-off valve (1-9) are respectively installed inside the housing assembly (1-1); The hydrogen flame generator (1-13) is used to generate a real hydrogen flame. The hydrogen flame generator (1-13) includes a burner inlet C, an ignition electrode D and a flame detection electrode E. The burner inlet C is connected to one end of the shut-off valve (1-9), and the ignition electrode D and the flame detection electrode E are electrically connected to the explosion-proof control box (7). One end of the flow regulating valve (1-2) is connected to the other end of the shut-off valve (1-9); the other end of the flow regulating valve (1-2) is the gas supply inlet B, and the gas supply inlet B is connected to the other end of the interconnected hydrogen hose (4); The flow meter (1-3), the third pressure gauge (1-4), the overpressure protection switch (1-5), the first-stage safety shut-off solenoid valve (1-6), the leakage test switch (1-7), and the second-stage safety shut-off solenoid valve (1-8) are sequentially installed on the pipeline between one end of the flow regulating valve (1-2) and the other end of the shut-off valve (1-9). The flow regulating valve (1-2) is used to regulate the gas flow rate. The flow meter (1-3) is used to display the gas flow rate value in real time, and the flow signal output terminal of the flow meter (1-3) is connected to the flow signal input terminal of the explosion-proof control box (7). The first-stage safety shut-off solenoid valve (1-6) and the second-stage safety shut-off solenoid valve (1-8) are two solenoid valves connected in series to ensure the control of hydrogen flow. The gas pipeline is safely shut off. The first electromagnetic signal input terminal of the first-stage safety shut-off solenoid valve (1-6) is connected to the first electromagnetic signal output terminal of the explosion-proof control box (7). The second electromagnetic signal input terminal of the second-stage safety shut-off solenoid valve (1-8) is connected to the second electromagnetic signal output terminal of the explosion-proof control box (7). The overpressure protection switch (1-5) is used to monitor whether the pipeline pressure is overpressured, and the pressure protection control signal input terminal of the overpressure protection switch (1-5) is connected to the pressure protection control signal output terminal of the explosion-proof control box (7). The leak test switch (1-7) is used to shut off the pipeline when hydrogen leaks, and the leak control signal input terminal of the leak test switch (1-7) is connected to the leak control signal output terminal of the explosion-proof control box (7).

2. The hydrogen flame detector functional testing device according to claim 1, characterized in that, The hydrogen flame generator (1-13) is equipped with multi-specification flame nozzles at its outlet, which are connected to the burner inside the hydrogen flame generator (1-13) via threads.

3. The hydrogen flame detector functional testing device according to claim 1, characterized in that, The flame simulation box (1) is equipped with a flame arrester (1-10). The flame arrester (1-10) is positioned between the burner inlet C of the hydrogen flame generator (1-13) and the shut-off valve (1-9) to prevent backfire.

4. The hydrogen flame detector functional testing device according to claim 1, characterized in that, The fire baffle (1-11) adopts a U-shaped structure, and the height of the fire baffle (1-11) is adjustable.

5. The hydrogen flame detector functional testing device according to claim 1, characterized in that, The test setup also includes interconnected sensor signal cables (5), a first hydrogen leak detector (3-5), and a second hydrogen leak detector (1-14). The first hydrogen leak detector (3-5) is installed inside the hydrogen storage and supply tank (3) by bolts. The first hydrogen leak detector (3-5) is used to monitor in real time whether the hydrogen inside the hydrogen storage and supply tank (3) is leaking. The first sensor signal output terminal of the first hydrogen leak detector (3-5) is connected to the first sensor signal input terminal of the explosion-proof control box (7) through the interconnecting sensor signal cable (5). The second hydrogen leak detector (1-14) is installed inside the flame simulation box (1) by bolts. The second hydrogen leak detector (1-14) is used to monitor in real time whether hydrogen leaks inside the flame simulation box (1). The second sensor signal output terminal of the second hydrogen leak detector (1-14) is connected to the second sensor signal input terminal of the explosion-proof control box (7).

6. The hydrogen flame detector functional testing device according to claim 1, characterized in that, The experimental setup also includes four wheels; All four wheels are located at the bottom of the flame simulation box (1); Two of the four movable wheels are fixed wheels, and the two fixed wheels are equipped with brakes; the other two of the four movable wheels are swivel wheels.

7. The hydrogen flame detector functional testing device according to claim 1, characterized in that, The interconnected hydrogen hose (4) is made of metal and has a length greater than 30 meters.

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