Hydrogen storage device for hydrogen fuel cell

Abstract

The utility model discloses a hydrogen storage device for a hydrogen fuel cell, and belongs to the field of hydrogen fuel storage. A hydrogen storage device for a hydrogen fuel cell comprises a shell with an opening, a limiting hole is formed in the shell, a protective cover is detachably connected to the opening end of the shell, a top disc is arranged on the protective cover in a lifting mode, the central axis of the top disc coincides with the axis of the limiting hole, and at least three sets of limiting plates are evenly distributed in a cavity of the shell in a circumferential mode. The limiting plates are in sliding fit with the shell and the protective cover through sliding rail structures, and a locking part is arranged on the outer wall of the shell and used for limiting the limiting plates; according to the utility model, the distances among the three groups of limiting plates can be adjusted, so that the diameters of the clamping circumferences of the limiting plates are increased, the limiting plates are further suitable for gas storage tanks with different sizes, and the stable clamping effect formed by the three groups of limiting plates can improve the stability of the hydrogen storage tank and prevent the hydrogen storage tank from shaking and even toppling over.

Description

Technical Field

[0001] This utility model relates to the field of hydrogen fuel storage technology, and in particular to a hydrogen storage device for hydrogen fuel cells. Background Technology

[0002] Hydrogen has advantages such as being clean and efficient. Its calorific value is also the highest among all fossil fuels, chemical fuels, and biofuels except for nuclear fuels. These advantages make hydrogen one of the key technologies for solving global energy shortages and environmental pollution problems. Hydrogen fuel cells are batteries that use hydrogen as a chemical element to store energy. Their basic principle is the reverse reaction of water electrolysis. Hydrogen and oxygen are supplied to the anode and cathode, respectively. After hydrogen diffuses outward through the anode and reacts with the electrolyte, it releases electrons and reaches the cathode through an external load. In the process of hydrogen fuel cell manufacturing, hydrogen storage equipment is usually used to store the hydrogen feedstock.

[0003] A search revealed Chinese patent publication number CN218001155U, which discloses a hydrogen storage device for a hydrogen fuel cell. The device features multiple evenly spaced slots on a tank base, each containing a high-pressure hydrogen storage tank. A replacement assembly is mounted on the tank base, comprising multiple symmetrically arranged arc-shaped clamps. Reinforcing frames are connected to the outer sides of the arc-shaped clamps, and springs connect adjacent reinforcing frames. The two outermost reinforcing frames are fixedly connected to the main frame. The springs are compressed, causing adjacent reinforcing frames to move in opposite directions. The symmetrical arc-shaped clamps clamp the corresponding high-pressure hydrogen storage tanks.

[0004] However, in actual use, it was found that in the above-mentioned patent, multiple high-pressure hydrogen storage tanks can be moved simultaneously by moving the replacement component through a mechanical mobile device. When multiple high-pressure hydrogen storage tanks need to be replaced, only the replacement component needs to be moved as a whole. The replacement component can move multiple high-pressure hydrogen storage tanks to the designated position. However, the above-mentioned patent only uses springs to fix the hydrogen storage tanks. As is known, due to the instability of springs, the hydrogen storage tanks may shake or even tip over during the movement or transportation of the entire hydrogen storage equipment. It is also not applicable to gas storage tanks of different sizes, and has certain limitations. Utility Model Content

[0005] The purpose of this invention is to solve the problems in the prior art where hydrogen storage tanks are prone to shaking during transportation and cannot be used with storage tanks of different sizes, and to propose a hydrogen storage device for hydrogen fuel cells.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A hydrogen storage device for a hydrogen fuel cell includes a housing with an opening and a limiting hole. A protective cover is detachably connected to the opening end of the housing. A top plate is raised and lowered on the protective cover. The central axis of the top plate coincides with the axis of the limiting hole. At least three sets of limiting plates are evenly distributed in a circle inside the cavity of the housing. Each limiting plate slides with the housing and the protective cover through a slide rail structure. A locking part is provided on the outer wall of the housing for limiting the positioning of the limiting plates.

[0008] To facilitate sliding adjustment of the limiting plate, preferably, the slide rail structure includes through holes corresponding to those opened on the housing and the protective cover, and limiting blocks and extension columns are fixedly connected to both ends of the limiting plate, with the limiting blocks and extension columns slidably connected in the through holes on the housing and the protective cover, respectively.

[0009] To improve the stability between the limiting plate and the hydrogen storage tank, the contact surface of the limiting plate is further provided with a wear-resistant layer.

[0010] To facilitate the positioning of the limiting plate, preferably, the locking part includes a locking bolt, a fixing plate is fixedly connected to the housing, the locking bolt is threaded onto the fixing plate, and a movable block that fits against the outer wall of the housing is provided on the top of the limiting block, the movable block cooperating with the locking bolt.

[0011] To facilitate the fixation of the bottom of the hydrogen storage tank, preferably, the protective cover is threaded with a screw, the top plate is fixedly connected to one end of the screw, and the other end of the screw is provided with a handle.

[0012] To facilitate the installation of the protective cover, preferably, a mounting plate is fixedly connected to the inner wall of the housing, and the mounting plate has mounting holes, and the protective cover is fixedly connected to the mounting holes by connecting bolts.

[0013] Compared with the prior art, the present invention provides a hydrogen storage device for hydrogen fuel cells, which has the following advantages:

[0014] 1. The hydrogen storage device for the hydrogen fuel cell adjusts the distance between the three sets of limiting plates by sliding the position of the limiting plate, thereby increasing the clamping circumference diameter of the limiting plate, making it suitable for gas storage tanks of different sizes. It is further limited and fixed by a top plate that can be lifted and moved.

[0015] 2. The hydrogen storage device for the hydrogen fuel cell improves the practicality of the device by setting a wear-resistant layer on the contact surface of the limiting plate. During the movement or transportation of the entire hydrogen storage device, the stable clamping effect formed by the three sets of limiting plates will improve the stability of the hydrogen storage tank and prevent it from shaking or even tipping over.

[0016] The parts of this device not described herein are the same as or can be implemented using existing technology. This utility model can adjust the distance between the three sets of limiting plates, thereby increasing the clamping circumference diameter of the limiting plates, making it suitable for gas storage tanks of different sizes. Furthermore, the stable clamping effect formed by the three sets of limiting plates will improve the stability of the hydrogen storage tank and prevent it from shaking or even tipping over. Attached Figure Description

[0017] Figure 1 This is a first-view structural schematic diagram of a hydrogen storage device for a hydrogen fuel cell proposed in this utility model.

[0018] Figure 2 This is a second-view structural schematic diagram of a hydrogen storage device for a hydrogen fuel cell proposed in this utility model.

[0019] Figure 3 This is a cross-sectional structural diagram of a hydrogen storage device for a hydrogen fuel cell proposed in this utility model;

[0020] Figure 4 This is a partial structural schematic diagram of a hydrogen storage device for a hydrogen fuel cell proposed in this utility model.

[0021] In the diagram: 1. Housing; 2. Limiting hole; 3. Protective cover; 4. Screw; 5. Top plate; 6. Connecting bolt; 7. Through hole; 8. Limiting plate; 9. Limiting block; 10. Movable block; 11. Fixing plate; 12. Locking bolt. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 utility model.

[0024] Hydrogen boasts advantages such as cleanliness and high efficiency, and its calorific value is the highest among all fossil fuels, chemical fuels, and biofuels except for nuclear fuels. These advantages make hydrogen a key technology for addressing global energy shortages and environmental pollution. Hydrogen fuel cells use hydrogen as a chemical element to create energy storage batteries. Their basic principle is the reverse reaction of water electrolysis. Hydrogen and oxygen are supplied to the anode and cathode, respectively. Hydrogen diffuses outward through the anode and reacts with the electrolyte, releasing electrons that travel through an external load to the cathode. During the hydrogen fuel cell manufacturing process, hydrogen storage equipment is typically used to store the hydrogen feedstock. This storage equipment is called a hydrogen storage tank, with a valve at the top for releasing or sealing the hydrogen, similar to the blue oxygen cylinders used in hospitals.

[0025] Example:

[0026] Reference Figures 1-4 A hydrogen storage device for a hydrogen fuel cell includes a housing 1 with an opening. A limiting hole 2 is provided on the housing 1, allowing placement of a valve located on the top of a hydrogen storage tank. A protective cover 3 is detachably connected to the opening of the housing 1. The protective cover 3 can be removed, and the hydrogen tank can then be placed inside the housing 1 for external safety protection. A top plate 5 is raised and lowered on the protective cover 3, with its central axis coinciding with the axis of the limiting hole 2, used to limit and abut against the bottom of the hydrogen storage tank. At least three sets of limiting plates 8 are evenly distributed circumferentially within the cavity of the housing 1. Each limiting plate 8 forms a sliding contact with the housing 1 and the protective cover 3 via a sliding rail structure. The device utilizes a sliding mechanism to adjust the distance between the three sets of limiting plates 8, thereby increasing the clamping circumference diameter of the limiting plates 8. This makes it suitable for gas storage tanks of different sizes. The movable top plate 5 further limits and secures the tank, improving its practicality. Furthermore, during the movement or transportation of the hydrogen storage equipment, the stable clamping effect formed by the three sets of limiting plates 8 enhances the stability of the hydrogen storage tank, preventing it from shaking or even tipping over. A locking part is provided on the outer wall of the housing 1 to limit the movement of the limiting plates 8, preventing them from moving too far and maintaining a certain size.

[0027] In the above scheme, hydrogen storage equipment is usually used to store hydrogen feedstock during the hydrogen fuel cell processing. This hydrogen storage equipment is a hydrogen storage tank. A switch valve is set on the top of the hydrogen storage tank for releasing or sealing hydrogen, similar to the blue oxygen metal tank used in hospitals. The three sets of limiting plates 8 can be adjusted and moved, and then the locking part is used to limit the movement of the limiting plates 8 to prevent the movement range of the limiting plates 8 from becoming too large, so as to maintain a certain size. Then the hydrogen storage tank is pushed into the housing 1 from the beginning, and then its switch valve is passed through the limiting hole 2. Then the protective cover 3 is installed on the opening end of the housing 1 and fixed. Then the distance between the top plate 5 and the hydrogen storage tank is adjusted so that the top plate 5 abuts against the bottom of the hydrogen storage tank, thereby improving the stability of the device. It should be noted that the diameter of the hydrogen storage tank to be stored cannot be greater than the width or length of the housing 1, and the diameter of the clamping range formed between the limiting plates 8 also needs to be greater than the diameter of the hydrogen storage tank.

[0028] The aforementioned slide rail structure includes through holes 7 corresponding to those opened on the housing 1 and the protective cover 3. Limiting blocks 9 and extension columns are fixedly connected to both ends of the limiting plate 8. The limiting blocks 9 and extension columns are slidably connected in the through holes 7 on the housing 1 and the protective cover 3, so that the limiting plate 8 can be slidably connected to the housing 1 and the protective cover 3, and move along the direction of the through holes 7. There are three sets of through holes 7, and the three sets of through holes 7 are evenly distributed in a circle.

[0029] To improve the limiting effect of the limiting plate 8, a wear-resistant layer is provided on the contact surface of the limiting plate 8. The wear-resistant layer can be made of rubber or silicone.

[0030] To facilitate the fixed installation of the protective cover 3, a mounting plate is fixedly connected to the inner wall of the housing 1. The mounting plate has mounting holes, and the protective cover 3 is fixedly connected to the mounting holes by connecting bolts 6.

[0031] It should be explained that the above-mentioned locking part includes a locking bolt 12, a fixing plate 11 is fixedly connected to the housing 1, the locking bolt 12 is threadedly connected to the fixing plate 11, and the top of the limiting block 9 is provided with a movable block 10 that fits against the outer wall of the housing 1. The movable block 10 cooperates with the locking bolt 12. When the locking bolt 12 is rotated clockwise, it can abut against the outer wall of the movable block 10, thereby achieving the effect of limiting the movable block 10.

[0032] To facilitate the lifting and lowering of the top plate 5, a screw rod 4 is threaded onto the protective cover 3. The top plate 5 is fixedly connected to one end of the screw rod 4, and a handle is provided at the other end of the screw rod 4.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A hydrogen storage device for a hydrogen fuel cell comprising a housing (1) provided with an opening, characterized in that, A limiting hole (2) is provided on the housing (1). The shell (1) is detachably connected to a protective cover (3) at its open end. A top plate (5) is raised and lowered on the protective cover (3). The central axis of the top plate (5) coincides with the axis of the limiting hole (2). At least three sets of limiting plates (8) are evenly distributed in a circle inside the cavity of the shell (1). Each limiting plate (8) forms a sliding fit with the shell (1) and the protective cover (3) through a slide rail structure. A locking part is provided on the outer wall of the shell (1) for limiting the limiting plate (8).

2. The hydrogen storage device for a hydrogen fuel cell according to claim 1, wherein The slide rail structure includes through holes (7) corresponding to the housing (1) and the protective cover (3). The two ends of the limiting plate (8) are fixedly connected to the limiting block (9) and the extension column. The limiting block (9) and the extension column are slidably connected in the through holes (7) on the housing (1) and the protective cover (3).

3. The hydrogen storage device for a hydrogen fuel cell according to claim 2, wherein The contact surface of the limiting plate (8) is provided with a wear-resistant layer.

4. The hydrogen storage device for a hydrogen fuel cell according to claim 2, wherein The locking part includes a locking bolt (12), and a fixing plate (11) is fixedly connected to the housing (1). The locking bolt (12) is threadedly connected to the fixing plate (11). The top of the limiting block (9) is provided with a movable block (10) that fits against the outer wall of the housing (1). The movable block (10) cooperates with the locking bolt (12).

5. The hydrogen storage device for a hydrogen fuel cell according to claim 1, wherein The protective cover (3) is threaded with a screw (4), the top plate (5) is fixedly connected to one end of the screw (4), and the other end of the screw (4) is provided with a handle.

6. The hydrogen storage device for a hydrogen fuel cell according to claim 1, wherein An installation plate is fixedly connected to the inner wall of the housing (1), and an installation hole is provided on the installation plate. The protective cover (3) is fixedly connected to the installation hole by connecting bolts (6).

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