Leakage-proof structure for hydrogen liquefaction

Abstract

The utility model relates to the technical field of liquefied hydrogen discloses a kind of leakage-proof structure for hydrogen liquefaction, including hydrogen storage tank, the hydrogen storage tank top is fixedly connected with connecting pipe, the hydrogen storage tank side wall is provided with protection mechanism, the hydrogen storage tank bottom is provided with buffer mechanism;The buffer mechanism includes damper, the hydrogen storage tank bottom is provided with base, the damper is fixedly connected between hydrogen storage tank and base, the base inside is fixedly connected with guide rod, the guide rod side wall is slidably connected with sliding block, the sliding block top is fixedly connected with hinged frame one, the hinged frame one inside is rotatably connected with connecting plate.In the utility model, by setting up buffer mechanism by damper, guide rod, sliding block and spring in the hydrogen storage tank bottom, multidimensional buffer shock attenuation in vertical direction is realized, not only can effectively absorb and dissipate the impact energy from transportation, earthquake and other external vibration, protect the structural stability of tank body and its connecting pipeline.

Description

Technical Field

[0001] This utility model relates to the field of liquefied hydrogen technology, and in particular to a leak-proof structure for hydrogen liquefaction. Background Technology

[0002] Hydrogen liquefaction is a critical technology for converting gaseous hydrogen into liquid hydrogen for storage and transportation. This process involves extreme conditions of high pressure and low temperature, placing stringent requirements on the sealing and safety of the equipment. Leak-proof structures are essential systems used to prevent hydrogen leakage during liquefaction, and their design must take into account the physical properties of hydrogen, its high flammability, and wide explosive limits. A good leak-proof structure not only ensures the safety of hydrogen during storage and transportation but also prevents environmental pollution.

[0003] Leak-proof structures for hydrogen liquefaction are primarily used in storage tanks for the safe storage of liquid hydrogen. Existing leak-proof designs for hydrogen storage tanks typically employ single protective measures, such as fixing devices or simple gasket seals. While these designs can prevent hydrogen leakage to a certain extent, their buffering designs for external vibrations and impacts are relatively simple and often fail to provide sufficient shock absorption, lacking multi-dimensional buffering and stability control capabilities. Therefore, a leak-proof structure for hydrogen liquefaction is proposed to address these issues. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a leak-proof structure for hydrogen liquefaction, which aims to improve the problem that the buffer design in the prior art is relatively simple in response to external vibration and impact, and often fails to provide sufficient shock absorption effect.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A leak-proof structure for hydrogen liquefaction includes a hydrogen storage tank, a connecting pipe fixedly connected to the top of the hydrogen storage tank, a protective mechanism provided on the side wall of the hydrogen storage tank, and a buffer mechanism provided at the bottom of the hydrogen storage tank.

[0007] The buffer mechanism includes a damper. A base is provided at the bottom of the hydrogen storage tank. The damper is fixedly connected between the hydrogen storage tank and the base. A guide rod is fixedly connected inside the base. A slider is slidably connected to the side wall of the guide rod. A first hinge frame is fixedly connected to the top of the slider. A connecting plate is rotatably connected inside the first hinge frame. A second hinge frame is rotatably connected inside the connecting plate. The second hinge frame is fixedly connected to the side wall of the hydrogen storage tank.

[0008] As a further description of the above technical solution:

[0009] A spring is sleeved on the outside of the guide rod, and the side wall of the slider is slidably connected to the inside of the base.

[0010] As a further description of the above technical solution:

[0011] One end of the spring is fixedly connected to the side wall of the base, and the other end of the spring is fixedly connected to the side wall of the slider.

[0012] As a further description of the above technical solution:

[0013] The protective mechanism includes a crossbar and a protective cover. A fixing plate is fixedly connected to the side wall of the hydrogen storage tank. The crossbar is fixedly connected between the fixing plates, and the protective cover is fixedly connected to the side wall of the fixing plate.

[0014] As a further description of the above technical solution:

[0015] A fixing frame is fixedly connected to the side wall of the outer crossbar, and a foot pedal is fixedly connected inside the fixing frame.

[0016] As a further description of the above technical solution:

[0017] The pedal has anti-slip grooves evenly distributed inside.

[0018] As a further description of the above technical solution:

[0019] The base is cross-shaped, and the guide rods are distributed in a cross shape.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, by setting a buffer mechanism composed of a damper, a guide rod, a slider and a spring at the bottom of the hydrogen storage tank, multi-dimensional buffering and shock absorption in the vertical direction is achieved. It can not only effectively absorb and dissipate the impact energy from external vibrations such as transportation and earthquakes, and protect the structural stability of the tank and its connecting pipes, but also ensure that the buffering process is stable and controllable through the guide rod, which significantly improves the impact resistance and seismic performance of the overall structure.

[0022] 2. In this utility model, a protective mechanism consisting of a fixed plate, a crossbar, and a protective cover is set on the side wall of the hydrogen storage tank to form a solid physical barrier, which can effectively resist external accidental impacts and prevent the tank from breaking. At the same time, a footboard with anti-slip grooves is integrated into this protective structure, providing a stable and safe standing platform for workers to inspect and operate. Attached Figure Description

[0023] Figure 1 This is a three-dimensional schematic diagram of a leak-proof structure for hydrogen liquefaction proposed in this utility model;

[0024] Figure 2 This is a schematic diagram of the buffer mechanism of a leak-proof structure for hydrogen liquefaction proposed in this utility model;

[0025] Figure 3 This is a schematic diagram of the protective mechanism of a leak-proof structure for hydrogen liquefaction proposed in this utility model.

[0026] Legend:

[0027] 1. Hydrogen storage tank; 2. Connecting pipe; 3. Base; 4. Guide rod; 5. Slider; 6. Spring; 7. Hinge frame one; 8. Connecting plate; 9. Hinge frame two; 10. Damper; 11. Fixing plate; 12. Crossbar; 13. Protective cover; 14. Fixing frame; 15. Pedal; 16. Anti-slip groove. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Reference Figures 1-3This utility model provides an embodiment of a leak-proof structure for hydrogen liquefaction, comprising a hydrogen storage tank 1, with a connecting pipe 2 fixedly connected to the top of the hydrogen storage tank 1, facilitating the safe transport of hydrogen and ensuring the sealing reliability of the connection. A protective mechanism is provided on the side wall of the hydrogen storage tank 1 to effectively resist accidental external impacts, acting as a physical barrier to prevent tank damage and subsequent internal hydrogen leakage. A buffer mechanism is provided at the bottom of the hydrogen storage tank 1 to absorb and dissipate impact energy during transportation, earthquakes, or other external vibrations, thereby protecting the structural stability of the tank and its connecting pipes. The buffer mechanism includes a damper 10, with a base 3 at the bottom of the hydrogen storage tank 1. The damper 10 is fixedly connected between the hydrogen storage tank 1 and the base 3, achieving a flexible connection between the tank and the base, significantly reducing impact forces from the vertical direction and improving overall seismic performance. A guide rod 4 is fixedly connected inside the base 3. The base 3 is cross-shaped, and the guide rods 4 are distributed in a cross shape, which enhances the buffering capacity and stability of the structure in multiple horizontal directions. The guide rods 4 are slidably connected to the side wall of the slider 5, so that the tank can move along a predetermined trajectory when horizontal shaking occurs. The guide rod 4 is fitted with a spring 6. The side wall of the slider 5 is slidably connected to the inside of the base 3. One end of the spring 6 is fixedly connected to the side wall of the base 3, and the other end of the spring 6 is fixedly connected to the side wall of the slider 5. When the tank is subjected to lateral impact, the spring can be quickly compressed or stretched, thereby effectively absorbing the impact energy and pushing the tank to return to the center position smoothly after the external force disappears. The top of the slider 5 is fixedly connected to the first hinge frame 7. The first hinge frame 7 is rotatably connected to the connecting plate 8. The connecting plate 8 is rotatably connected to the second hinge frame 9. The second hinge frame 9 is fixedly connected to the side wall of the hydrogen storage tank 1.

[0030] Reference Figures 1-3 The protective mechanism includes a crossbar 12 and a protective cover 13. A fixed plate 11 is fixedly connected to the side wall of the hydrogen storage tank 1, ensuring the stability and reliability of the entire protective structure. The crossbar 12 is fixedly connected between the fixed plates 11, forming a sturdy structural frame and enhancing the overall impact resistance. The protective cover 13 is fixedly connected to the side wall of the fixed plate 11, further improving the stability and load-bearing strength of the structure. A fixed frame 14 is fixedly connected to the side wall of the outer crossbar 12. A footboard 15 is fixedly connected inside the fixed frame 14, providing a convenient standing platform for workers to inspect and operate. Anti-slip grooves 16 are evenly distributed inside the footboard 15, increasing the friction of the contact surface and effectively reducing the risk of slipping when stepping on it.

[0031] Working principle: During transportation, when the equipment encounters bumpy roads and shakes, the shaking of the hydrogen storage tank 1 will cause one side of the connecting plate 8 to deflect in the second hinge frame 9, while the other side will deflect inside the first hinge frame 7 and push the slider 5 to slide, forcing the spring 6 to be compressed and deformed. As the hydrogen storage tank 1 moves downward, the force generated by the shaking is transferred to the inside of the damper 10, which relieves the force generated by the shaking until it is relieved. In addition, when the hydrogen storage tank 1 is impacted, the crossbar 12 and the protective cover 13 can effectively block it, preventing the force generated by the impact from acting directly on the hydrogen storage tank 1, which could cause equipment damage and leakage.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A leak-proof structure for hydrogen liquefaction, comprising a hydrogen storage tank (1), characterized in that: The hydrogen storage tank (1) is fixedly connected to the top of the connecting pipe (2), the side wall of the hydrogen storage tank (1) is provided with a protective mechanism, and the bottom of the hydrogen storage tank (1) is provided with a buffer mechanism; The buffer mechanism includes a damper (10), and a base (3) is provided at the bottom of the hydrogen storage tank (1). The damper (10) is fixedly connected between the hydrogen storage tank (1) and the base (3). A guide rod (4) is fixedly connected inside the base (3). A slider (5) is slidably connected to the side wall of the guide rod (4). A first hinge frame (7) is fixedly connected to the top of the slider (5). A connecting plate (8) is rotatably connected inside the first hinge frame (7). A second hinge frame (9) is rotatably connected inside the connecting plate (8). The second hinge frame (9) is fixedly connected to the side wall of the hydrogen storage tank (1).

2. The leak-proof structure for hydrogen liquefaction according to claim 1, characterized in that: The guide rod (4) is fitted with a spring (6) on its outside, and the slider (5) is slidably connected to the inside of the base (3) on its side wall.

3. The leak-proof structure for hydrogen liquefaction according to claim 2, characterized in that: One end of the spring (6) is fixedly connected to the side wall of the base (3), and the other end of the spring (6) is fixedly connected to the side wall of the slider (5).

4. The leak-proof structure for hydrogen liquefaction according to claim 3, characterized in that: The protective mechanism includes a crossbar (12) and a protective cover (13). A fixing plate (11) is fixedly connected to the side wall of the hydrogen storage tank (1). The crossbar (12) is fixedly connected between the fixing plates (11), and the protective cover (13) is fixedly connected to the side wall of the fixing plate (11).

5. The leak-proof structure for hydrogen liquefaction according to claim 4, characterized in that: A fixing frame (14) is fixedly connected to the side wall of the outer crossbar (12), and a foot pedal (15) is fixedly connected inside the fixing frame (14).

6. The leak-proof structure for hydrogen liquefaction according to claim 5, characterized in that: The pedal (15) has anti-slip grooves (16) evenly distributed inside.

7. The leak-proof structure for hydrogen liquefaction according to claim 1, characterized in that: The base (3) is cross-shaped, and the guide rods (4) are distributed in a cross shape.

Images