A hydrogen storage cylinder

Abstract

This utility model relates to a hydrogen storage bottle, belonging to the field of hydrogen storage technology. It includes a hydrogen storage bottle body with a flexible expansion structure partially fixed to the inner wall of the bottle body. The flexible expansion structure has a accommodating space for holding solid hydrogen particles. An expansion space also exists between the flexible expansion structure and the inner wall of the bottle body. The solid hydrogen particles in the accommodating space absorb hydrogen and expand, changing the size of the expansion space. Furthermore, the expansion space between the flexible expansion structure and the side wall of the bottle body allows the solid particles to be placed within the flexible expansion structure. With the same volume of solid particles, the expansion space raises the height of the solid particles within the bottle body, preventing excessive accumulation at the bottom and avoiding the risk of excessive pressure on the bottom of the bottle body. Because the solid particles do not excessively accumulate, the hydrogen absorption and desorption reaction effect is better.

Description

Technical Field

[0001] This utility model belongs to the field of hydrogen storage technology, and specifically relates to a hydrogen storage bottle. Background Technology

[0002] Solid hydrogen granular storage cylinders are an application of solid-state hydrogen storage technology. By storing hydrogen in a solid form within a specific material, they offer higher hydrogen storage density and better safety compared to traditional gaseous and liquid hydrogen storage methods. However, solid hydrogen granules expand upon absorbing hydrogen, and due to their own weight, they accumulate at the bottom of the reaction chamber. This can affect the hydrogen absorption reaction and also pose a risk of excessive pressure on the bottom of the storage cylinder due to particle expansion.

[0003] Therefore, in view of the problems that existing hydrogen storage bottles have with the effect of hydrogen absorption reaction and the risk of excessive pressure on the bottom of the hydrogen storage bottle due to particle expansion, there is a need to provide a new type of hydrogen storage bottle. Utility Model Content

[0004] This invention provides a hydrogen storage bottle to solve the problem that existing hydrogen storage bottles affect the hydrogen absorption reaction and also cause excessive pressure on the bottom of the bottle due to particle expansion.

[0005] This utility model is achieved through the following technical solution: a hydrogen storage bottle, including a hydrogen storage bottle body, wherein a flexible expansion structure is partially fixed to the inner wall of the hydrogen storage bottle body, the flexible expansion structure has a accommodating space for accommodating solid hydrogen particles, and an expansion space is also provided between the flexible expansion structure and the inner wall of the hydrogen storage bottle body, wherein the solid hydrogen particles in the accommodating space absorb hydrogen and expand, changing the size of the expansion space.

[0006] To better realize this utility model, further optimization is made to the above structure. The flexible expansion structure is a flexible perforated plate. A hydrogen delivery pipe is provided inside the flexible perforated plate. Multiple air vents are opened on the side of the hydrogen delivery pipe. Multiple hydrogen delivery pipes are evenly arranged inside the flexible perforated plate.

[0007] To better realize this utility model, further optimizations are made to the above structure. Limiting plates are provided at the upper and lower ends of the hydrogen storage cylinder body, and the two ends of the hydrogen delivery pipe are welded to the two limiting plates.

[0008] To better realize this utility model, further optimizations are made to the above structure. The hydrogen storage cylinder body is provided with a top end cap and a bottom end cap. Both the top end cap and the bottom end cap are arc-shaped surfaces. The top end cap and the bottom end cap are provided with anti-disassembly threaded plugs.

[0009] To better realize this utility model, further optimizations are made to the above structure. The anti-disassembly threaded plug of the top end cap is provided with a disposable steel wire seal. The disposable steel wire seal includes a steel wire rope and a lock head. The anti-disassembly threaded plug is an internal hexagon bolt. The steel wire rope passes through both sides of the internal hexagon bolt and through the shaft. The lock head locks both ends of the steel wire rope.

[0010] To better realize this utility model, further optimizations are made to the above structure. A stop valve is provided on the top end cap, and a filter screen is provided at the connection between the stop valve and the inside of the top end cap.

[0011] To better realize this utility model, further optimization is made to the above structure. A temperature detection device is provided on the top end cap, and the bottom of the temperature detection device is inserted into the top end cap.

[0012] To better realize this utility model, the above structure is further optimized by providing a mechanical pressure relief valve on the top end cap.

[0013] To better realize this utility model, further optimizations are made to the above structure, and a cutting position line is provided on the top end cap.

[0014] To better realize this utility model, further optimizations are made to the above structure, with a protective handrail at the top of the hydrogen storage cylinder body and protective feet at the bottom of the hydrogen storage cylinder body.

[0015] Compared with the prior art, this utility model has the following advantages:

[0016] This utility model provides a hydrogen storage cylinder, including a hydrogen storage cylinder body. The hydrogen storage cylinder body has a flexible expansion structure partially fixed to the inner wall of the hydrogen storage cylinder body. The flexible expansion structure has a accommodating space for accommodating solid hydrogen particles. There is also an expansion space between the flexible expansion structure and the inner wall of the hydrogen storage cylinder body. The solid hydrogen particles in the accommodating space absorb hydrogen and expand, changing the size of the expansion space.

[0017] The above structure incorporates a flexible expansion structure within the hydrogen storage tank, with an expansion space between the flexible expansion structure and the side wall of the hydrogen storage tank. Solid particles are placed within the flexible expansion structure. With the same volume of solid particles, the expansion space raises the height of the solid particles within the hydrogen storage tank, preventing excessive accumulation at the bottom and avoiding the risk of excessive pressure on the bottom of the tank. Furthermore, because the solid particles do not accumulate excessively, the hydrogen absorption and desorption reaction is more efficient. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a front view of the hydrogen storage bottle in this utility model;

[0020] Figure 2 This is a cross-sectional view of the hydrogen storage bottle in this utility model;

[0021] Figure 3 This is a cross-sectional view of the hydrogen storage cylinder body in this utility model;

[0022] Figure 4 This is a front view of the disposable steel wire seal of this utility model.

[0023] In the picture:

[0024] 1-Hydrogen storage cylinder body; 2-Flexible perforated plate; 3-Solid granules; 4-Hydrogen delivery pipe; 5-Limiting plate; 6-Top end cap; 7-Anti-tamper threaded plug; 8-Disposable steel wire seal; 9-Stop valve; 10-Temperature detection device; 11-Mechanical pressure relief valve; 12-Cutting position line; 13-Safety handrail; 14-Safety feet. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] In the description of this utility model, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] Example 1:

[0029] A hydrogen storage cylinder includes a hydrogen storage cylinder body 1, wherein a flexible expansion structure is partially fixed to the inner wall of the hydrogen storage cylinder body 1, the flexible expansion structure has a accommodating space for accommodating solid hydrogen particles, and an expansion space is also provided between the flexible expansion structure and the inner wall of the hydrogen storage cylinder body 1, wherein the solid hydrogen particles in the accommodating space absorb hydrogen and expand, changing the size of the expansion space.

[0030] The above structure, by setting a flexible expansion structure inside the hydrogen storage cylinder body 1, and providing an expansion space between the flexible expansion structure and the side wall of the hydrogen storage cylinder body 1, places solid particles 3 inside the flexible expansion structure; with the same volume of solid particles 3, the expansion space will raise the height of the solid particles 3 inside the hydrogen storage cylinder body 1, and will not excessively accumulate at the bottom of the hydrogen storage cylinder body 1, avoiding the risk of excessive pressure at the bottom of the hydrogen storage cylinder body 1; and because the solid particles 3 will not excessively accumulate, the hydrogen absorption and desorption reaction effect of the solid particles 3 is better.

[0031] The aforementioned flexible expansion structure is a flexible perforated plate 2, within which a hydrogen delivery pipe 4 is provided. Multiple vent holes are formed on the side of the hydrogen delivery pipe 4, and these multiple hydrogen delivery pipes 4 are evenly distributed within the flexible perforated plate 2. By using a flexible perforated plate 2 as the flexible expansion structure, the flexible perforated plate 2 partially contacts the inner wall of the hydrogen storage cylinder body 1, which facilitates heat transfer; the multiple hydrogen delivery pipes 4 improve the efficiency of hydrogen input and output.

[0032] The upper and lower ends of the hydrogen storage cylinder body 1 are provided with limiting plates 5, and the two ends of the hydrogen delivery pipe 4 are welded to the two limiting plates 5. The two limiting plates 5 and the flexible mesh plate 2 form an internal space for placing solid hydrogen particles, preventing the solid hydrogen particles from sticking to the inner wall of the hydrogen storage cylinder body 1. When recycling and cutting the device, the limiting plates 5 and the flexible mesh plate 2 can be easily separated.

[0033] The aforementioned hydrogen storage cylinder body 1 is provided with a top end cap 6 and a bottom end cap, both of which are curved surfaces. Anti-tamper threaded plugs 7 are provided on both the top and bottom end caps. The anti-tamper threaded plugs 7 are smaller than the flange size, which, while maintaining the pressure-bearing capacity of the hydrogen storage cylinder body 1, reduces welding deformation between the anti-tamper threaded plugs 7 and the hydrogen storage cylinder body 1, thus lowering the sealing difficulty.

[0034] The tamper-evident threaded plug 7 of the top end cap 6 is equipped with a disposable steel wire seal 8. The disposable steel wire seal 8 includes a steel wire rope and a lock head. The tamper-evident threaded plug 7 is an internal hexagon bolt. The steel wire rope passes through both sides of the internal hexagon bolt and through the shaft. The lock head locks both ends of the steel wire rope. Because the steel wire rope passes through both sides of the internal hexagon bolt and through the shaft, a wrench cannot be inserted into the internal hexagon bolt, thus achieving the tamper-evident function. Furthermore, the lock head is marked with the corresponding hydrogen storage cylinder information.

[0035] The top end cap 6 is equipped with a shut-off valve 9, and a filter screen is provided at the connection between the shut-off valve 9 and the interior of the top end cap 6. The shut-off valve 9 is used to control the flow between the inside and outside of the hydrogen storage cylinder body 1, and the filter screen is provided to prevent debris from clogging the shut-off valve 9.

[0036] A temperature detection device 10 is provided on the top end cap 6, and the bottom of the temperature detection device 10 is inserted into the top end cap 6. The temperature detection device 10 is used to observe the temperature inside the hydrogen storage cylinder body 1.

[0037] The aforementioned top end cap 6 is equipped with a mechanical pressure relief valve 11. The mechanical pressure relief valve 11 is used to deal with sudden pressure changes in the hydrogen storage cylinder body 1 to protect the cylinder body. A filter screen is provided at the connection between the mechanical pressure relief valve 11 and the inside of the top end cap 6 to prevent debris from entering.

[0038] The top end cap 6 is provided with a cutting position line 12. The cutting position line 12 is used to guide the cutting of the hydrogen storage cylinder during recycling.

[0039] The hydrogen storage cylinder body 1 is provided with a protective handle 13 at the top and a protective foot 14 at the bottom. The protective handle 13 and the protective foot 14 respectively protect the top and bottom of the hydrogen storage cylinder body 1 to prevent it from colliding with hard objects.

[0040] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model 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 this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A hydrogen storage bottle characterized by: The device includes a hydrogen storage cylinder body (1), and the hydrogen storage cylinder body (1) has a flexible expansion structure partially fixed to the inner wall of the hydrogen storage cylinder body (1). The flexible expansion structure has a accommodating space for accommodating solid hydrogen particles (3). There is also an expansion space between the flexible expansion structure and the inner wall of the hydrogen storage cylinder body. The solid hydrogen particles (3) in the accommodating space absorb hydrogen and expand, changing the size of the expansion space.

2. The hydrogen storage bottle of claim 1, wherein: The flexible expansion structure is a flexible perforated plate (2), and a hydrogen delivery pipe (4) is provided inside the flexible perforated plate (2). Multiple air vents are opened on the side of the hydrogen delivery pipe (4), and multiple hydrogen delivery pipes (4) are evenly arranged inside the flexible perforated plate (2).

3. A hydrogen storage bottle according to claim 2, wherein: The upper and lower ends of the hydrogen storage cylinder body (1) are provided with limiting plates (5), and the two ends of the hydrogen delivery pipe (4) are welded to the two limiting plates (5).

4. The hydrogen storage bottle of claim 1, wherein: The hydrogen storage cylinder body (1) is provided with a top end cap (6) and a bottom end cap. Both the top end cap (6) and the bottom end cap are arc-shaped surfaces. The top end cap (6) and the bottom end cap are provided with anti-disassembly threaded plugs (7).

5. A hydrogen storage bottle according to claim 4, wherein: The top end cap (6) has a disposable steel wire seal (8) on its anti-dismantling threaded plug (7). The disposable steel wire seal (8) includes a steel wire rope and a lock head. The anti-dismantling threaded plug (7) is an internal hexagon bolt. The steel wire rope passes through both sides of the internal hexagon bolt and through the shaft. The lock head locks both ends of the steel wire rope.

6. The hydrogen storage bottle of claim 4, wherein: The top end cap (6) is provided with a stop valve (9), and a filter screen is provided at the connection between the stop valve (9) and the inside of the top end cap (6).

7. The hydrogen storage bottle of claim 4, wherein: The top end cap (6) is provided with a temperature detection device (10), and the bottom of the temperature detection device (10) is inserted into the top end cap (6).

8. The hydrogen storage bottle of claim 1, wherein: The top end cap (6) is equipped with a mechanical pressure relief valve (11).

9. The hydrogen storage bottle of claim 7, wherein: The top end cap (6) is provided with a cutting position line (12).

10. The hydrogen storage bottle of claim 7, wherein: The top of the hydrogen storage cylinder body (1) is provided with a protective handrail (13), and the bottom of the hydrogen storage cylinder body (1) is provided with a protective foot (14).

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