An experimental platform for simulating hydrogen leakage diffusion and multi-stage collaborative disposal

Abstract

The utility model discloses a kind of experimental platform of simulating hydrogen leakage diffusion and multistage collaborative disposal, including workbench and aluminium alloy frame, the top of workbench is installed with controller, transparent acrylic plate is fixedly installed outside aluminium alloy frame, concentration detection assembly and angle adjusting assembly are installed in aluminium alloy frame, height adjusting assembly is installed on concentration detection assembly, one end of angle adjusting assembly is fixedly connected with hydrogen simulation component, shooting component is placed outside aluminium alloy frame, a kind of experimental platform of simulating hydrogen leakage diffusion and multistage collaborative disposal of the utility model is realized by rotatable nozzle, leakage direction switches, with detachable acrylic cavity structure adaptation cube, cuboid, a variety of geometric configurations such as containing obstacle, solve the problem that traditional experiment is insufficient to explore multi-factor coupling effect, and when hydrogen concentration exceeds threshold value, inert gas can be automatically introduced, ensure the safety of experiment.

Description

Technical Field

[0001] This utility model relates to the field of hydrogen leakage simulation technology, specifically an experimental platform for simulating hydrogen leakage diffusion and multi-stage coordinated treatment. Background Technology

[0002] Hydrogen energy, as a clean and efficient energy carrier, is increasingly widely used in renewable energy hydrogen production systems, fuel cell vehicles, and other fields. However, hydrogen has characteristics such as low density, rapid diffusion, and a wide flammability range. The flammable clouds formed after a leak can easily cause combustion, explosions, and other safety accidents, severely restricting the large-scale development of the hydrogen energy industry. Therefore, accurately capturing the spatiotemporal distribution patterns of hydrogen concentration after a leak and establishing efficient and reliable diffusion prediction methods have become core requirements for ensuring the safe operation of hydrogen energy systems. Currently, research related to hydrogen leaks mainly focuses on concentration field monitoring and diffusion pattern analysis.

[0003] However, existing hydrogen leak simulation devices struggle to acquire concentration field data across the entire space, lack systematic research into the coupling effects of multiple factors such as leak rate, leak direction, and geometric configuration, and are unable to achieve visualization and full-domain monitoring of the diffusion flow field. Furthermore, existing devices only operate at the monitoring level and have not established an emergency response mechanism linked to monitoring. They are unable to implement graded intervention measures for different concentration risk levels during the simulation process, resulting in an inability to realistically reproduce the monitoring and handling after a leak accident. Consequently, they fail to meet the verification requirements for hydrogen leak emergency response plans in real-world scenarios.

[0004] Therefore, an experimental platform is needed to simulate hydrogen leakage and diffusion and multi-stage coordinated treatment. Utility Model Content

[0005] The purpose of this invention is to provide an experimental platform for simulating hydrogen leakage diffusion and multi-stage coordinated response, in order to solve the problems mentioned in the background art. Existing hydrogen leakage simulation devices are difficult to obtain concentration field data across the entire space, lack systematic research on the coupling effects of multiple factors such as leakage rate, leakage direction, and geometric configuration, and are difficult to visualize and monitor the diffusion flow field. Moreover, existing devices only remain at the monitoring level and have not built an emergency response mechanism linked to monitoring. They cannot take graded intervention measures for different concentration risk levels during the simulation process, resulting in the inability to realistically reproduce the monitoring and response after a leakage accident, and failing to meet the verification needs of hydrogen leakage emergency plans in real-world scenarios.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an experimental platform for simulating hydrogen leakage and diffusion and multi-stage coordinated treatment, comprising a workbench and an aluminum alloy frame. A controller is installed on the top of the workbench. A transparent acrylic plate is fixedly installed on the outside of the aluminum alloy frame. A concentration detection component and an angle adjustment component are installed inside the aluminum alloy frame. A height adjustment component is installed on the concentration detection component. One end of the angle adjustment component is fixedly connected to a hydrogen simulation component. An imaging component is placed on the outside of the aluminum alloy frame. A fan is fixedly connected to the middle of the transparent acrylic plate at the top.

[0007] Preferably, the shooting assembly includes a backplate bracket and a camera bracket, which are respectively placed at both ends of an aluminum alloy frame. A background texture plate is fixedly installed on one side of the backplate bracket, and a high-speed camera is placed on the top of the camera bracket.

[0008] Preferably, the angle adjustment component includes a mounting bracket, which is installed inside an aluminum alloy frame. A spray pipe is rotatably mounted inside the mounting bracket, and multiple nozzles are equidistantly installed in the middle of the spray pipe. One end of the spray pipe is fixedly connected to an adjustment motor, which is fixedly mounted outside the mounting bracket. The other end of the spray pipe is fixedly connected to a rotating joint. The high-density, multi-condition dataset ensures that the model can learn more comprehensive hydrogen diffusion patterns and adapt to the prediction needs of different leakage scenarios.

[0009] Preferably, the hydrogen simulation component includes a hydrogen cylinder, a nitrogen cylinder, and a carbon dioxide cylinder. The hydrogen cylinder has a gas delivery pipe fixedly connected to its delivery end. One end of the gas delivery pipe extends into the interior of the aluminum alloy frame and is fixedly connected to a rotary joint. An electric flow valve and a flow controller are installed in the middle of the gas delivery pipe. An inert delivery pipe is fixedly connected between the output ends of the nitrogen cylinder and the carbon dioxide cylinder. One end of the inert delivery pipe extends into the interior of the aluminum alloy frame. An electric flow valve and a flow controller are installed in the middle of both the gas delivery pipe and the inert delivery pipe.

[0010] Preferably, the concentration detection component includes a sliding frame, with sliding collars slidably connected to both ends of the sliding frame, and a placement frame fixedly connected between the two sliding collars. Multiple hydrogen concentration sensors are fixedly installed inside the placement frame.

[0011] Preferably, the height adjustment component includes a transmission block, which is fixedly installed on one side of the placement frame. A lead screw is internally connected to the transmission block, one end of which is fixedly connected to an output motor, and the other end of which is rotatably connected to a connecting plate. The connecting plate is fixedly installed on the sliding frame, and the bottom of the output motor is fixedly installed on the ground by screws. This allows for the detection of concentration differences at different heights under different leakage conditions, which is beneficial for more comprehensive statistical test data.

[0012] Compared with the prior art, the beneficial effects of this utility model are: The leak direction can be switched by a rotatable nozzle. The detachable acrylic cavity structure can be adapted to various geometric configurations such as cubes, cuboids, and those containing obstacles. This solves the problem of insufficient exploration of multi-factor coupling effects in traditional experiments. It can systematically acquire diffusion data under different working conditions, providing key experimental support for revealing the hydrogen leakage diffusion mechanism. The background schlieren panel, in conjunction with a high-speed camera, enables real-time visualization of the hydrogen diffusion flow field, capturing macroscopic features such as eddy formation and diffusion boundary migration; while the distributed concentration sensors accurately acquire time-series concentration data at various points in space. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a top view of the present invention; Figure 3 This is a diagram of the height adjustment component of this utility model; Figure 4 This is a diagram of the angle adjustment component of this utility model.

[0014] In the diagram: 1. Workbench; 2. Controller; 3. Aluminum alloy frame; 4. Transparent acrylic sheet; 5. Backplate bracket; 6. Background textured board; 7. Camera bracket; 8. High-speed camera; 9. Hydrogen cylinder; 10. Gas pipeline; 11. Electric flow valve; 12. Mounting bracket; 13. Spray pipe; 14. Nozzle; 15. Rotary joint; 16. Adjusting motor; 17. Sliding frame; 18. Sliding collar; 19. Placement rack; 20. Transmission block; 21. Hydrogen concentration sensor; 22. Lead screw; 23. Connecting plate; 24. Output motor; 25. Flow controller; 26. Nitrogen cylinder; 27. Carbon dioxide cylinder; 28. Inert gas delivery pipe; 29. ​​Fan. Detailed Implementation

[0015] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0016] Please see Figure 1-4This utility model provides an experimental platform for simulating hydrogen leakage and diffusion and multi-stage coordinated treatment, including a workbench 1 and an aluminum alloy frame 3. A controller 2 is installed on the top of the workbench 1. A transparent acrylic plate 4 is fixedly installed on the outside of the aluminum alloy frame 3. A concentration detection component and an angle adjustment component are installed inside the aluminum alloy frame 3. A height adjustment component is installed on the concentration detection component. One end of the angle adjustment component is fixedly connected to a hydrogen simulation component. An imaging component is placed on the outside of the aluminum alloy frame 3. A fan 29 is fixedly connected to the middle of the transparent acrylic plate 4 at the top.

[0017] Furthermore, the shooting components include a backplate bracket 5 and a camera bracket 7, which are respectively placed at both ends of the aluminum alloy frame 3. A background texture plate 6 is fixedly installed on one side of the backplate bracket 5, and a high-speed camera 8 is placed on the top of the camera bracket 7.

[0018] Furthermore, the angle adjustment assembly includes a mounting bracket 12, which is installed inside the aluminum alloy frame 3. A spray pipe 13 is rotatably mounted inside the mounting bracket 12. Multiple nozzles 14 are equidistantly installed in the middle of the spray pipe 13. One end of the spray pipe 13 is fixedly connected to an adjustment motor 16, which is fixedly installed outside the mounting bracket 12. The other end of the spray pipe 13 is fixedly connected to a rotating joint 15. The hydrogen simulation assembly includes a hydrogen cylinder 9, a nitrogen cylinder 26, and a carbon dioxide cylinder 27. The gas delivery end of the hydrogen cylinder 9 is fixedly connected to a gas delivery pipe 10, one end of which extends to the aluminum alloy frame. The interior of the aluminum alloy frame 3 is fixedly connected to the rotary joint 15. An electric flow valve 11 and a flow controller 25 are installed in the middle of the gas supply pipeline 10. An inert delivery pipe 28 is fixedly connected between the output ends of the nitrogen cylinder 26 and the carbon dioxide cylinder 27. One end of the inert delivery pipe 28 extends into the interior of the aluminum alloy frame 3. An electric flow valve 11 and a flow controller 25 are installed in the middle of both the gas supply pipeline 10 and the inert delivery pipe 28. Starting the regulating motor 16 can drive the spray pipe 13 at the output end to rotate along the rotary joint 15 at one end inside the mounting frame 12, thereby driving multiple nozzles 14 to change the spray angle.

[0019] Furthermore, the concentration detection component includes a sliding frame 17, with sliding collars 18 slidably connected to both ends of the sliding frame 17. A placement frame 19 is fixedly connected between the two sliding collars 18. Multiple hydrogen concentration sensors 21 are fixedly installed inside the placement frame 19. The height adjustment component includes a transmission block 20, which is fixedly installed on one side of the placement frame 19. A lead screw 22 is connected to the inside of the transmission block 20. An output motor 24 is fixedly connected to one end of the lead screw 22, and a connecting plate 23 is rotatably connected to the other end of the lead screw 22. The connecting plate 23 is fixedly installed on the sliding frame 17. The bottom of the output motor 24 is fixedly installed on the ground with screws. Starting the output motor 24 can drive the lead screw 22 at the output end to rotate. When the lead screw 22 rotates, it drives the transmission block 20 to move the placement frame 19 up and down along the sliding frame 17 through the sliding collars 18 at both ends, thereby changing the detection height of the hydrogen concentration sensors 21.

[0020] In this embodiment, the following is used: an aluminum alloy frame 3 is constructed from 40×40mm European standard aluminum profiles and fixed with angle brackets and bolts. A 3mm thick transparent acrylic plate 4 is glued to the outside of the frame with acrylic adhesive to form a closed experimental chamber. Only one side has a pre-drilled hole for pipe installation. A background texture plate 6 is fixed on a bracket and placed on the front of the aluminum alloy frame 3. A high-speed camera 8 is fixed on a bracket and placed on the back of the aluminum alloy frame 3. Shielded cables are used to connect the electric flow valve 11, regulating motor 16, output motor 24, and hydrogen concentration sensor 21 to the I / O port and analog input port of the controller 2, respectively. The controller 2 is a Siemens S7-1200, and the data acquisition card is connected to the computer via USB. The sensor output signal is also connected. During the experiment, the hydrogen cylinder 9 is opened, and the opening of the electric flow valve 11 is adjusted to 0.5L / min by the flow controller 25. Simultaneously, the high-speed camera 8 is started to record data in conjunction with the background texture plate 6 for data acquisition. The hydrogen concentration sensor 21 is used for real-time data processing. The concentration inside the aluminum alloy frame 3 is collected and fed back to the computer's built-in software. The high-speed camera 8 generates a video every 5 minutes and stores it to the computer's hard drive. During multi-coupling tests, if different leakage angles are adjusted, the controller 2 adjusts the angle of the adjusting motor 16, thereby driving the spray pipe 13 and nozzle 14 to change the leakage direction. For different flow rate tests, the controller 2 controls the electric flow valve 11 to change the flow rate. When it is necessary to detect hydrogen concentration at different heights, the output motor 24 is started to drive the placement rack 19 and hydrogen concentration sensor 21 to adjust the height. The hydrogen concentration sensor 21 is connected to the electric flow valve 11 and the flow controller 25. When the hydrogen concentration sensor 21 detects that the hydrogen concentration exceeds the threshold by 1%, the hydrogen cylinder 9 is closed. When the hydrogen concentration exceeds the threshold by 2%, the blower 29 is turned on to exhaust gas. When the hydrogen concentration exceeds the threshold by 3%, the nitrogen cylinder 26 and carbon dioxide cylinder 27 are turned on to transport inert gas through the inert delivery pipe 28.

[0021] All components are general standard parts or components known to those skilled in the art. Their structure and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods. All electrical components mentioned above should be electrically connected in accordance with the working principle described above and the sequence of operation between each electrical component. The detailed connection methods are well-known technologies in the field.

[0022] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An experimental platform for simulating hydrogen leakage and diffusion and multi-stage coordinated treatment, comprising a workbench (1) and an aluminum alloy frame (3), characterized in that: A controller (2) is installed on the top of the workbench (1). A transparent acrylic plate (4) is fixedly installed on the outside of the aluminum alloy frame (3). A concentration detection component and an angle adjustment component are installed inside the aluminum alloy frame (3). A height adjustment component is installed on the concentration detection component. A hydrogen simulation component is fixedly connected to one end of the angle adjustment component. A shooting component is placed on the outside of the aluminum alloy frame (3). A fan (29) is fixedly connected to the middle of the transparent acrylic plate (4) at the top.

2. The experimental platform for simulating hydrogen leakage and diffusion and multi-stage coordinated treatment according to claim 1, characterized in that: The shooting assembly includes a back plate bracket (5) and a camera bracket (7). The back plate bracket (5) and the camera bracket (7) are respectively placed at both ends of the aluminum alloy frame (3). A background texture plate (6) is fixedly installed on one side of the back plate bracket (5), and a high-speed camera (8) is placed on the top of the camera bracket (7).

3. The experimental platform for simulating hydrogen leakage and diffusion and multi-stage coordinated treatment according to claim 1, characterized in that: The angle adjustment assembly includes a mounting bracket (12), which is installed inside an aluminum alloy frame (3). A spray pipe (13) is rotatably installed inside the mounting bracket (12). Multiple nozzles (14) are equidistantly installed in the middle of the spray pipe (13). An adjustment motor (16) is fixedly connected to one end of the spray pipe (13). The adjustment motor (16) is fixedly installed outside the mounting bracket (12). A rotating joint (15) is fixedly connected to the other end of the spray pipe (13).

4. The experimental platform for simulating hydrogen leakage and diffusion and multi-stage coordinated treatment according to claim 3, characterized in that: The hydrogen simulation component includes a hydrogen cylinder (9), a nitrogen cylinder (26), and a carbon dioxide cylinder (27). The gas delivery end of the hydrogen cylinder (9) is fixedly connected to a gas delivery pipeline (10). One end of the gas delivery pipeline (10) extends into the interior of the aluminum alloy frame (3) and is fixedly connected to a rotating joint (15). An electric flow valve (11) and a flow controller (25) are installed in the middle of the gas delivery pipeline (10). An inert delivery pipe (28) is fixedly connected between the output ends of the nitrogen cylinder (26) and the carbon dioxide cylinder (27). One end of the inert delivery pipe (28) extends into the interior of the aluminum alloy frame (3). An electric flow valve (11) and a flow controller (25) are installed in the middle of both the gas delivery pipeline (10) and the inert delivery pipe (28).

5. The experimental platform for simulating hydrogen leakage and diffusion and multi-stage coordinated treatment according to claim 1, characterized in that: The concentration detection component includes a sliding frame (17), with sliding collars (18) slidably connected to both ends of the sliding frame (17), and a placement frame (19) fixedly connected between the two sliding collars (18). Multiple hydrogen concentration sensors (21) are fixedly installed inside the placement frame (19).

6. The experimental platform for simulating hydrogen leakage and diffusion and multi-stage coordinated treatment according to claim 5, characterized in that: The height adjustment assembly includes a transmission block (20), which is fixedly installed on one side of the placement frame (19). The transmission block (20) is internally connected to a lead screw (22), one end of which is fixedly connected to an output motor (24), and the other end of which is rotatably connected to a connecting plate (23). The connecting plate (23) is fixedly installed on the sliding frame (17), and the bottom of the output motor (24) is fixedly installed on the ground by screws.

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