High-pressure hydrogen storage cylinder sealing structure capable of achieving multiple sealing

Abstract

The high-pressure hydrogen storage bottle sealing structure comprises a bottle body, a bottle opening is welded to the upper portion of the inner wall of the bottle body, the top of the inner wall of the bottle body abuts against a first sealing ring abutting against the outer wall of the bottle opening, the top of the bottle body abuts against a second sealing ring abutting against the outer wall of the bottle opening, and the second sealing ring abuts against the outer wall of the bottle opening. The top of the second sealing ring abuts against a threaded sleeve, and the inner wall of the threaded sleeve is in threaded connection with the lower portion of the outer wall of the bottle opening. According to the high-pressure hydrogen storage cylinder sealing structure capable of achieving multiple sealing, through cooperation of the cylinder body, the cylinder opening, the first sealing ring, the second sealing ring, the threaded sleeve, the limiting sleeve and the deformable annular plate, multiple sealing can be achieved at the position, prone to leakage, of the cylinder opening, so that the overall use safety is guaranteed; and the external second sealing ring can be shielded, so that the influence of external illumination and the like is avoided, the service life of the sealing ring is prolonged, and the aging speed is reduced.

Description

Technical Field

[0001] This invention relates to the field of high-pressure hydrogen storage technology, specifically a high-pressure hydrogen storage cylinder sealing structure that can achieve multiple seals. Background Technology

[0002] High-pressure hydrogen storage is currently the most mature and widely used hydrogen storage method. It mainly achieves hydrogen compression storage through multi-layer composite containers. This technology is divided into Type III (metal liner) and Type IV (plastic liner) hydrogen storage containers, which can be applied to vehicle-mounted hydrogen storage, hydrogen refueling stations and long-tube trailer transportation. High-pressure hydrogen storage cylinders are required when storing hydrogen. High-pressure hydrogen storage is one of the key technologies for hydrogen energy storage and transportation. Its safety lies in preventing the leakage of high-pressure hydrogen. Traditional single-seal structures are at risk of failure under extreme working conditions or material aging, which makes them inconvenient to use and poses a high safety hazard. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a high-pressure hydrogen storage cylinder sealing structure that can achieve multiple seals. This solves the problem that high-pressure hydrogen storage is one of the key technologies for hydrogen energy storage and transportation, and its safety hinges on preventing the leakage of high-pressure hydrogen. Traditional single-seal structures are at risk of failure under extreme working conditions or material aging, which makes them inconvenient to use and poses a high safety hazard.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a high-pressure hydrogen storage cylinder sealing structure capable of multiple seals, comprising a cylinder body, a cylinder opening welded to the upper part of the inner wall of the cylinder body, a first sealing ring abutting against the outer wall of the cylinder opening at the top of the inner wall of the cylinder body, a second sealing ring abutting against the outer wall of the cylinder opening at the top of the cylinder body, a threaded sleeve abutting against the top of the second sealing ring, and the inner wall of the threaded sleeve being threadedly connected to the lower part of the outer wall of the cylinder opening.

[0005] Preferably, a limiting sleeve is engaged with the outer wall of the threaded sleeve, and the upper and lower parts of the limiting sleeve are respectively attached to the outer wall of the bottle mouth and the bottle body. Deformable limiting ring plates are engaged with the lower sides of the outer wall of the limiting sleeve, and the bottom of the two deformable limiting ring plates are fixedly connected to the top of the bottle body.

[0006] Preferably, the inner wall of the bottle opening is rotatably connected to a rotating cylinder via a bearing, the inner wall of the rotating cylinder is fixedly connected to a bracket, the bottom of the bracket is fixedly connected to a first perforated plate, and the outer wall of the first perforated plate is in contact with the inner wall of the bottle opening. The bottom of the first perforated plate is in contact with a second perforated plate that is fixedly connected to the inner wall of the bottle opening. Both the first and second perforated plates are fixedly connected to a sealing gasket on their respective sides, and the outer walls of both sealing gaskets are interference-fitted with the inner wall of the bottle opening.

[0007] Preferably, a third sealing ring is fixedly connected above and below the connection between the rotating cylinder and the bottle mouth, and a protective barrier is welded to the upper part of the outer wall of the bottle mouth, with the bottom of the protective barrier welded and fixed to the top of the limiting sleeve.

[0008] Preferably, the outer wall of the rotating drum is textured.

[0009] Beneficial effects This invention provides a high-pressure hydrogen storage cylinder sealing structure capable of multiple seals. It offers the following advantages: This high-pressure hydrogen storage cylinder sealing structure, through the cooperation of the cylinder body, cylinder mouth, first sealing ring, second sealing ring, threaded sleeve, limiting sleeve, and deformable ring plate, achieves multiple seals at the cylinder mouth where leakage is likely to occur, ensuring overall safety. Furthermore, it can shield the external second sealing ring from external light and other influences, thus extending its service life and reducing aging. By combining the bottle mouth, bracket, first orifice plate, second orifice plate, third sealing ring of the rotating cylinder, sealing gasket, and protective barrier, a seal can be provided at the opening to prevent leakage caused by malfunction of the bottle's own opening control valve. The protective barrier can also shield the rotating cylinder, and the third sealing ring can increase rotational friction while ensuring a seal between the rotating cylinder and the bottle mouth. This prevents the rotating cylinder from rotating accidentally when not operated manually, thus ensuring safety during use. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 for Figure 1 A sectional view; Figure 3 for Figure 2 A schematic diagram of the structure of the bottle mouth, bottle body, and first perforation plate; Figure 4 for Figure 2 A schematic diagram of the structure of the bottle neck, rotating cylinder, and third sealing ring.

[0011] In the diagram: 1. Bottle body; 2. Bottle mouth; 3. First sealing ring; 4. Second sealing ring; 5. Threaded sleeve; 6. Limiting sleeve; 7. Deformable limiting ring plate; 8. Rotary cylinder; 9. Support; 10. Second perforated plate; 11. First perforated plate; 12. Third sealing ring; 13. Protective barrier; 14. Sealing gasket. Detailed Implementation

[0012] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0013] Those skilled in the art can connect the components in this case sequentially. The specific connection and operation sequence should refer to the working principle described below. The detailed connection methods are well-known technologies in the field. The working principle and process are mainly described below.

[0014] High-pressure hydrogen storage is one of the key technologies for hydrogen energy storage and transportation. Its safety lies in preventing the leakage of high-pressure hydrogen. Traditional single-seal structures are at risk of failure under extreme working conditions or material aging, which makes them inconvenient to use and poses a high safety hazard. In view of this, the present invention provides a high-pressure hydrogen storage cylinder sealing structure that can achieve multiple seals. Through the cooperation of the cylinder body, the cylinder mouth, the first sealing ring, the second sealing ring, the threaded sleeve, the limiting sleeve and the deformable ring plate, multiple seals can be achieved at the point where leakage is likely to occur at the cylinder mouth, so as to ensure overall safety in use. In addition, the second sealing ring can be shielded from external light and other influences, so as to extend its service life and reduce the aging rate.

[0015] Example 1: By Figure 1 , 2 As can be seen from 3 and 4, a high-pressure hydrogen storage cylinder sealing structure that can achieve multiple seals includes a cylinder body 1, a cylinder mouth 2 welded to the upper part of the inner wall of the cylinder body 1, a first sealing ring 3 that abuts against the outer wall of the cylinder mouth 2 at the top of the inner wall of the cylinder body 1, a second sealing ring 4 that abuts against the outer wall of the cylinder mouth 2 at the top of the cylinder body 1, a threaded sleeve 5 that abuts against the top of the second sealing ring 4, and the inner wall of the threaded sleeve 5 is threadedly connected to the lower part of the outer wall of the cylinder mouth 2. In the specific implementation process, it is worth noting that the materials of the first sealing ring 3, the second sealing ring 4, the third sealing ring 12 and the sealing gasket 14 are not limited, as long as they meet the usage requirements. The threaded sleeve 5 can firmly press the second sealing ring 4 against the connection between the bottle mouth 2 and the bottle body 1. Furthermore, the outer wall of the threaded sleeve 5 is clamped to the limiting sleeve 6, and the upper and lower parts of the limiting sleeve 6 are respectively attached to the outer walls of the bottle mouth 2 and the bottle body 1. Deformable limiting ring plates 7 are clamped to the lower sides of the outer wall of the limiting sleeve 6, and the bottom of the two deformable limiting ring plates 7 are fixed to the top of the bottle body 1. In the specific implementation process, it is worth noting that the limiting sleeve 6 can restrict the position of the threaded sleeve 5, thereby preventing the threaded sleeve 5 from reversing and reducing the sealing performance of the second sealing ring 4. The deformable limiting ring plate 7 can limit the position of the limiting sleeve 6. The material of the deformable limiting ring plate 7 is not limited. It can be made of hard plastic or other materials. The specific material is not limited as long as it meets the usage requirements. Furthermore, a rotating cylinder 8 is rotatably connected to the inner wall of the bottle mouth 2 via a bearing. A bracket 9 is fixedly connected to the inner wall of the rotating cylinder 8. A first perforated plate 11 is fixedly connected to the bottom of the bracket 9, and the outer wall of the first perforated plate 11 is in contact with the inner wall of the bottle mouth 2. A second perforated plate 10, which is fixedly connected to the inner wall of the bottle mouth 2, is in contact with the bottom of the first perforated plate 11. Sealing gaskets 14 are fixedly connected to the sides of the first perforated plate 11 and the second perforated plate 10 that are close to each other, and the outer walls of the two sealing gaskets 14 are both interference fit with the inner wall of the bottle mouth 2. In the specific implementation process, it is worth noting that when rotating the rotating drum 8, the position of the first perforated plate 11 can be changed by the bracket 9. When the openings of the first perforated plate 11 and the second perforated plate 10 are misaligned, the inside of the bottle mouth 2 can be sealed. Furthermore, a third sealing ring 12 is fixedly connected above and below the connection between the rotating cylinder 8 and the bottle mouth 2. A protective barrier 13 is welded to the upper part of the outer wall of the bottle mouth 2, and the bottom of the protective barrier 13 is welded and fixed to the top of the limiting sleeve 6. In the specific implementation process, it is worth noting that the third sealing ring 12 can ensure the sealing performance between the rotating cylinder 8 and the bottle mouth 2, and can also increase the friction between the rotating cylinder 8 and the bottle mouth 2, so as to prevent the rotating cylinder 8 from rotating on its own when not operated manually, and the protective bar 13 can shield and protect the rotating cylinder 8 to prevent accidental contact with foreign objects. Furthermore, the outer wall of the rotating drum 8 is machined with grinding texture; In the specific implementation process, it is worth noting that the grinding can increase the friction between the rotating drum 8 and people's fingers, so as to improve the ease of use; Specifically, when using this high-pressure hydrogen storage cylinder sealing structure that enables multiple seals, during installation, the worker places the first sealing ring 3 on the outer wall of the cylinder mouth 2, then inserts the cylinder mouth 2 into the opening of the unwelded cylinder body 1, and then welds and fixes the cylinder mouth 2 and cylinder body 1 together. Next, the second sealing ring 4 is placed on the cylinder mouth 2, and then the threaded sleeve 5 is used to tighten and fix the second sealing ring 4. Then, the limiting sleeve 6 is placed on the outer wall of the cylinder mouth 2 and inserted into the inside of the deformable limiting ring plate 7. Then, the second perforated plate 10, the first perforated plate 11, and the rotating cylinder 8 are installed in this way. Finally, the protective barrier 13 is welded to the outer wall of the cylinder mouth 2 and the limiting sleeve 6. At this point, the installation work is completed, and the cylinder can be put into use.

[0016] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-pressure hydrogen storage cylinder sealing structure capable of achieving multiple sealing, comprising a cylinder body (1), characterized in that: The inner wall of the bottle body (1) is welded with a bottle mouth (2), the top of the inner wall of the bottle body (1) is tightly closed with a first sealing ring (3) which is tightly closed with the outer wall of the bottle mouth (2), the top of the bottle body (1) is tightly closed with a second sealing ring (4) which is tightly closed with the outer wall of the bottle mouth (2), the top of the second sealing ring (4) is tightly closed with a threaded sleeve (5), and the inner wall of the threaded sleeve (5) is threadedly connected with the outer wall of the bottle mouth (2).

2. The high-pressure hydrogen storage cylinder sealing structure capable of achieving multiple sealing according to claim 1, characterized in that: The outer wall of the threaded sleeve (5) is clamped with a limiting sleeve (6), the upper and lower parts of the limiting sleeve (6) are respectively attached to the outer walls of the bottle mouth (2) and the bottle body (1), the outer wall of the limiting sleeve (6) is clamped with deformable limiting ring plates (7) on both sides of the lower part, and the bottoms of the two deformable limiting ring plates (7) are fixedly connected with the top of the bottle body (1).

3. The high-pressure hydrogen storage cylinder sealing structure capable of achieving multiple sealing according to claim 1, characterized in that: The inner wall of the bottle mouth (2) is rotatably connected with a rotating drum (8) through a bearing, the inner wall of the rotating drum (8) is fixedly connected with a support (9), the bottom of the support (9) is fixedly connected with a first hole plate (11), the outer wall of the first hole plate (11) is attached to the inner wall of the bottle mouth (2), the bottom of the first hole plate (11) is attached with a second hole plate (10) which is fixedly connected with the inner wall of the bottle mouth (2), the side of the first hole plate (11) and the second hole plate (10) which are close to each other are fixedly connected with sealing gaskets (14), and the outer walls of the two sealing gaskets (14) are in interference fit with the inner wall of the bottle mouth (2).

4. The high-pressure hydrogen storage cylinder sealing structure capable of achieving multiple sealing according to claim 1, characterized in that: The connecting part of the rotating drum (8) and the bottle mouth (2) is fixedly connected with a third sealing ring (12) above and below, the outer wall of the bottle mouth (2) is welded with a protective barrier rod (13), and the bottom of the protective barrier rod (13) is welded and fixed with the top of the limiting sleeve (6).

5. The high-pressure hydrogen storage cylinder sealing structure capable of achieving multiple sealing according to claim 4, characterized in that: The outer wall of the rotating drum (8) is processed with grinding lines.

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