A solid hydrogen storage device

Abstract

The utility model discloses a solid hydrogen storage device, including the shell body, the upper end fixed mounting of shell body has the vacuumizing pipe, the inside of shell body is provided with the inner bag, the upper end fixed mounting of inner bag has the hydrogen injection pipe, the upper end fixed mounting of shell body has the sealing cylinder, the hydrogen injection pipe is located in the sealing cylinder, and with sealed sliding connection thereof, the inside of inner bag is equal interval and is provided with a plurality of mounting grooves, and the inside of each mounting groove is provided with hydrogen storage alloy, and a plurality of mounting grooves are connected through the intercommunication cavity intercommunication. The utility model discloses the setting of up and down buffer structure can effectively absorb and disperse energy when the device is impacted by external force, vibrates or jolts in the transportation process, alleviates the shaking and stress of inner bag, reduces the risk of damaging inner bag due to collision, and cooperates with air bag protection measures, ensures the safe use of air bag.

Description

Technical Field

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

[0002] Currently, common solid hydrogen storage devices mainly consist of an outer shell and an inner liner, with a hydrogen storage alloy placed inside for adsorbing and storing hydrogen. However, existing solid hydrogen storage devices still have many problems in practical applications, seriously affecting their performance and safety.

[0003] In terms of shock resistance and vibration damping, most existing devices lack effective cushioning mechanisms. During transportation or use, the devices will inevitably be subjected to external impacts, vibrations, or bumps. Due to the lack of a buffer structure between the inner liner and the outer shell, these external forces will act directly on the inner liner, causing it to shake or even collide with the outer shell, increasing the risk of damage to the inner liner. Once the inner liner ruptures, the hydrogen storage alloy will leak, not only wasting hydrogen but also potentially causing a safety accident.

[0004] However, some hydrogen storage devices with buffer mechanisms have certain design flaws in these mechanisms. While some devices incorporate buffer bladders, the connection between the bladders and surrounding components is flawed, making the bladders susceptible to external environmental influences during operation. For example, in a vacuum environment, the bladders may burst due to excessive pressure differences, thus losing their buffering effect. Furthermore, some devices lack effective protective measures for their buffer bladders, making them prone to rupture under excessive compression, further reducing the device's safety. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a solid hydrogen storage device. Utilizing an upper and lower buffer structure, it can effectively absorb and disperse energy when the device is subjected to external impacts, vibrations, or bumps during transportation, reducing the shaking and stress on the inner liner, lowering the risk of damage to the inner liner due to collisions, and, in conjunction with airbag protection measures, ensuring the safe use of the airbag.

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

[0007] A solid hydrogen storage device includes an outer shell, a vacuum tube fixedly installed at the upper end of the outer shell, an inner liner provided inside the outer shell, a hydrogen injection tube fixedly installed at the upper end of the inner liner, and a sealing cylinder fixedly installed at the upper end of the outer shell. The hydrogen injection tube is located inside the sealing cylinder and is slidably connected to it in a sealed manner.

[0008] The inner liner has multiple equally spaced mounting slots inside, each mounting slot is filled with a hydrogen storage alloy, and the multiple mounting slots are connected by a connecting cavity.

[0009] A buffer mechanism is provided between the inner liner and the outer shell to improve the stability of the inner liner.

[0010] Preferably, the buffer mechanism includes an upper buffer sleeve fixedly installed on the upper end of the inner liner, an airbag limiting cylinder fixedly installed on the inner top of the outer shell, and an upper buffer airbag provided between the airbag limiting cylinder and the upper buffer sleeve.

[0011] A lower buffer sleeve is fixedly installed at the lower end of the inner liner, and a lower buffer seat is fixedly installed at the inner bottom of the outer shell. A lower buffer airbag is provided between the lower buffer sleeve and the lower buffer seat.

[0012] Preferably, the upper buffer sleeve is welded and fixed by a vertical ring plate and a horizontal ring plate, and the upper buffer sleeve and the airbag limiting cylinder are in a sealed sliding connection.

[0013] Preferably, the lower buffer seat is composed of a cylinder and a disk, the height of the disk is less than the inner height of the cylinder, and the lower buffer sleeve and the disk are connected in a sealed sliding connection.

[0014] Preferably, a vacuum interlayer is formed between the outer shell and the inner liner, and the vacuum interlayer is filled with an aluminized polyester film, hollow glass microspheres, or carbon insulation paper.

[0015] Preferably, the outer shell is made of low-carbon steel or aluminum alloy, and the inner liner is made of stainless steel or aluminum alloy.

[0016] This utility model has the following beneficial effects:

[0017] A vacuum interlayer is formed between the outer shell and the inner liner, filled with high-quality insulation materials such as aluminized polyester film, hollow glass microspheres, or carbon insulation paper. The vacuum environment greatly reduces gas convection heat transfer, while the insulation materials further hinder heat conduction and radiation, effectively reducing the transfer of external heat to the inner liner and the loss of heat from the inner liner. This creates a stable temperature environment for the hydrogen storage alloy, extends the hydrogen storage time, and reduces the risk of hydrogen leakage due to temperature fluctuations.

[0018] By setting up upper and lower buffer mechanisms, the inner liner is provided with all-round buffer protection. The upper buffer airbag between the upper buffer sleeve and the airbag limiting cylinder, and the lower buffer airbag between the lower buffer sleeve and the lower buffer seat, can effectively absorb and disperse energy when the device is subjected to external impact, vibration or bumps during transportation, reduce the shaking and stress on the inner liner, and reduce the risk of damage to the inner liner due to collision.

[0019] The upper buffer sleeve is sealed and slidably connected to the airbag limiting cylinder, while the lower buffer sleeve is sealed and slidably connected to the disc of the lower buffer seat. This design not only ensures the normal operation of the buffer airbag but also prevents the airbag from being detonated by an external vacuum. Simultaneously, the height of the disc of the lower buffer seat is less than the inner height of the cylinder. When the lower buffer airbag is compressed close to its limit, the cylinder can support the inner liner, preventing the lower buffer airbag from over-compressing and bursting, further improving the safety of the device. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a solid hydrogen storage device proposed in this utility model;

[0021] Figure 2 This is a vertical cross-sectional schematic diagram of a solid hydrogen storage device proposed in this utility model;

[0022] Figure 3 This is a cross-sectional schematic diagram of a solid hydrogen storage device proposed in this utility model.

[0023] In the diagram: 1 Outer shell, 2 Vacuum tube, 3 Sealing cylinder, 4 Hydrogen injection tube, 5 Inner liner, 6 Mounting groove, 7 Upper buffer sleeve, 8 Upper buffer airbag, 9 Airbag limiting cylinder, 10 Lower buffer seat, 11 Lower buffer airbag, 12 Lower buffer sleeve, 13 Hydrogen storage alloy, 14 Connecting cavity. Detailed Implementation

[0024] 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.

[0025] 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.

[0026] Reference Figures 1-3A solid hydrogen storage device includes an outer shell 1, with a vacuum tube 2 fixedly installed at the upper end of the outer shell 1. An electrically controlled valve is installed on the vacuum tube 2. By controlling the opening of the electrically controlled valve, a vacuum equipment can be used to evacuate the vacuum interlayer between the outer shell 1 and the inner liner 5, further enhancing the heat insulation effect and providing a good storage environment for the hydrogen storage alloy inside the inner liner 5. The inner liner 5 is located inside the outer shell 1, and a temperature control module is installed inside the inner liner 5. This module can precisely control the heating temperature and time according to the actual needs of the hydrogen storage alloy. For example, in some cases, the hydrogen storage alloy needs to absorb heat to release hydrogen, or it needs to maintain a specific temperature range during storage to maintain its stability. The temperature control module can accurately achieve these functions, ensuring that the hydrogen storage alloy is always in optimal working condition. This is existing technology and will not be elaborated further here.

[0027] A vacuum interlayer is formed between the outer shell 1 and the inner liner 5. The vacuum interlayer is filled with aluminized polyester film, hollow glass microspheres or carbon insulation paper to provide heat insulation, reduce heat transfer, and maintain the stability of the hydrogen storage environment inside the inner liner. The outer shell 1 is made of low carbon steel or aluminum alloy, and the inner liner 5 is made of stainless steel or aluminum alloy. A hydrogen injection pipe 4 is fixedly installed at the upper end of the inner liner 5, and a sealing cylinder 3 is fixedly installed at the upper end of the outer shell 1. The hydrogen injection pipe 4 is located inside the sealing cylinder 3 and is slidably connected to it in a sealed manner.

[0028] The inner liner 5 has multiple installation slots 6 evenly spaced inside, and each installation slot 6 is equipped with a hydrogen storage alloy 13. The hydrogen storage alloy 13 is a vanadium-based hydrogen storage alloy. The multiple installation slots 6 are connected by a connecting cavity 14.

[0029] A buffer mechanism for improving the stability of the inner liner 5 is provided between the inner liner 5 and the outer shell 1. The buffer mechanism includes an upper buffer sleeve 7 fixedly installed on the upper end of the inner liner 5. An airbag limiting cylinder 9 is fixedly installed on the inner top of the outer shell 1. An upper buffer airbag 8 is provided between the airbag limiting cylinder 9 and the upper buffer sleeve 7. The upper buffer sleeve 7 is fixedly welded by a vertical ring plate and a horizontal ring plate. The upper buffer sleeve 7 and the airbag limiting cylinder 9 are sealed and slidably connected, which can prevent the upper buffer airbag 8 from being detonated by the external vacuum.

[0030] The lower end of the inner liner 5 is fixedly installed with a lower buffer sleeve 12, and the inner bottom of the outer shell 1 is fixedly installed with a lower buffer seat 10. The lower buffer seat 10 is composed of a cylinder and a disc. The height of the disc is less than the inner height of the cylinder, which serves to limit the compression. When the lower buffer airbag 11 is compressed to near its limit, it can support the upper inner liner 5 to prevent the lower buffer airbag 11 from being compressed too severely and bursting. The lower buffer sleeve 12 and the disc are sealed and slidably connected. The lower buffer airbag 11 is provided between the lower buffer sleeve 12 and the lower buffer seat 10 to prevent the lower buffer airbag 11 from being detonated by the external vacuum.

[0031] Working principle:

[0032] Hydrogen gas is injected into the inner liner 5 through a hydrogen injection pipe 4 located at the upper end of the inner liner 5. The hydrogen injection pipe 4 is located inside the sealing cylinder 3 at the upper end of the outer shell 1 and is slidably connected to it to ensure the airtightness of the hydrogen injection process. Multiple mounting slots 6 are equally spaced inside the inner liner 5, and each mounting slot 6 is equipped with a hydrogen storage alloy 13. The multiple mounting slots 6 are connected by a connecting cavity 14. After hydrogen gas is injected, it is absorbed and stored by the hydrogen storage alloy 13.

[0033] When the device is subjected to external impact or vibration, the upper buffer airbag 8 absorbs energy by compression or expansion, reducing the shaking and impact of the inner liner 5. At the same time, the sealed sliding connection method can prevent the upper buffer airbag 8 from being detonated by the external vacuum.

[0034] When the device is subjected to a downward impact force, the lower buffer airbag 11 is compressed to absorb energy. When the lower buffer airbag 11 is compressed to near its limit, the cylinder of the lower buffer seat 10 can support the inner liner 5 to prevent the lower buffer airbag 11 from being over-compressed and bursting. The sealed sliding connection method can also prevent the lower buffer airbag from being detonated by the external vacuum.

[0035] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A solid hydrogen storage device, characterized by: Includes an outer shell (1), a vacuum tube (2) is fixedly installed at the upper end of the outer shell (1), an inner liner (5) is provided inside the outer shell (1), a hydrogen injection tube (4) is fixedly installed at the upper end of the inner liner (5), a sealing cylinder (3) is fixedly installed at the upper end of the outer shell (1), and the hydrogen injection tube (4) is located inside the sealing cylinder (3) and is slidably connected to it in a sealed manner; The inner liner (5) has multiple mounting slots (6) evenly spaced inside, and each mounting slot (6) is provided with a hydrogen storage alloy (13). The multiple mounting slots (6) are connected by a connecting cavity (14). A buffer mechanism is provided between the inner liner (5) and the outer shell (1) to improve the stability of the inner liner (5).

2. The solid hydrogen storage device of claim 1, wherein The buffer mechanism includes an upper buffer sleeve (7) fixedly installed on the upper end of the inner liner (5), an airbag limiting cylinder (9) fixedly installed on the inner top of the outer shell (1), and an upper buffer airbag (8) provided between the airbag limiting cylinder (9) and the upper buffer sleeve (7). The lower end of the inner liner (5) is fixedly installed with a lower buffer sleeve (12), and the bottom of the outer shell (1) is fixedly installed with a lower buffer seat (10). A lower buffer airbag (11) is provided between the lower buffer sleeve (12) and the lower buffer seat (10).

3. A solid hydrogen storage device according to claim 2, wherein The upper buffer sleeve (7) is fixed by welding a vertical ring plate and a horizontal ring plate, and the upper buffer sleeve (7) is sealed and slidably connected to the airbag limiting cylinder (9).

4. The solid hydrogen storage device of claim 3, wherein The lower buffer seat (10) is composed of a cylinder and a disk. The height of the disk is less than the inner height of the cylinder. The lower buffer sleeve (12) is in a sealed sliding connection with the disk.

5. The solid hydrogen storage device of claim 1, wherein A vacuum interlayer is formed between the outer shell (1) and the inner liner (5), and the vacuum interlayer is filled with aluminum-plated polyester film, hollow glass microspheres or carbon insulation paper.

6. The solid hydrogen storage device of claim 1, wherein The outer shell (1) is made of low-carbon steel or aluminum alloy, and the inner liner (5) is made of stainless steel or aluminum alloy.

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