A hydrogen storage cylinder

Abstract

The present invention relates to the technical field of hydrogen cylinders, and in particular to a hydrogen storage cylinder, comprising an outer bottle body, the rear end of the outer bottle body is fixedly connected to an outer spherical shell, the inner side of the outer bottle body is provided with an inner bottle body, the front end of the inner bottle body is fixedly connected to an outer bottle mouth, and the outer bottle mouth is fixedly passed through the front end of the outer bottle body, the rear end of the inner bottle body is fixedly connected to the inner spherical shell, the inner spherical shell and the outer spherical shell are both hemispherical in shape and are concentrically arranged, an upper plate is slidably attached to the lower surface of the inner bottle body, a plurality of elastic plates are fixedly connected to the lower surface of the upper plate, and a bottom plate is fixedly connected to the front and rear ends of the lower sides of the plurality of elastic plates. In the process of horizontal placement, the outer bottle body can play a role of dispersing force and buffering when it contacts the ground; in the process of vertical placement, when the end contacts the ground, it can play a role of dispersing force and buffering; the installation process between the inner bottle mouth and the outer bottle mouth is convenient, no stamping equipment is required, and the connection is stable after installation.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen cylinders, and in particular to a hydrogen storage cylinder. Background Art

[0002] A hydrogen storage cylinder is a large-volume cylinder specially used for filling hydrogen. The pure steel metal cylinder is made of high-strength steel and can withstand high internal pressure to ensure the safety of hydrogen during storage. The manufacturing technology of steel cylinders is relatively mature and the production cost is low.

[0003] In order to increase the structural strength, fiber materials are wrapped around the steel inner shell to enhance the strength. However, during transportation, there is still the problem that the surface is easily damaged by bumps. In the prior art, there is a way to add an outer shell to the surface of the inner shell for protection, and the outer shell is easily deformed due to bumps. When the outer shell of the hydrogen cylinder is deformed and damaged, it will bring the following disadvantages:

[0004] Weakened structural strength: The outer shell is an important barrier to protect the inner liner. Its deformation means a reduction in the overall structural strength, which cannot effectively withstand internal pressure and external impact.

[0005] Shortened cycle life: Shell deformation accelerates the aging process of hydrogen cylinders, causing them to reach the end of their service life in a shorter time and require more frequent replacement or repair.

[0006] Increased maintenance costs: When the hydrogen cylinder shell is deformed, professional inspection and repair are required, or even the entire cylinder needs to be replaced, which will increase the cost of use.

[0007] Failure to meet safety standards: The hydrogen cylinder shell is deformed so that it no longer meets relevant safety standards and regulatory requirements.

[0008] Therefore, a hydrogen storage cylinder is proposed, which can provide better protection without the need for high-strength steel for the outer shell. Summary of the invention

[0009] The purpose of the present invention is to solve the shortcomings existing in the background technology and to propose a hydrogen storage cylinder.

[0010] To achieve the above purpose, the technical solution adopted by the present invention is: a hydrogen storage cylinder, including an outer bottle body, the rear end of the outer bottle body is fixedly connected to an outer spherical shell, the inner side of the outer bottle body is provided with an inner bottle body, the front end of the inner bottle body is fixedly connected to an outer bottle mouth, and the outer bottle mouth fixedly passes through the front end of the outer bottle body, the rear end of the inner bottle body is fixedly connected to the inner spherical shell, the inner spherical shell and the outer spherical shell are both hemispherical and concentrically arranged, an upper plate is slidably attached to the lower surface of the inner bottle body, a plurality of elastic plates are fixedly connected to the lower surface of the upper plate, a bottom plate is commonly fixedly connected to the front and rear ends of the lower sides of the plurality of elastic plates, a bent pipe is commonly rotatably connected to the rear ends of the two side surfaces of the upper plate, the bent pipe is located between the inner spherical shell and the outer spherical shell, the central axis of the bent pipe when rotating passes through the center of the inner spherical shell, the inner side of the outer bottle mouth is threadedly connected to the inner bottle mouth, and a tightening mechanism is arranged at the rear end of the inner bottle mouth.

[0011] Preferably, reinforcement plates are fixedly connected at the rear ends of the two side surfaces of the upper plate, and a connecting rod is fixedly connected to the upper end of the reinforcement plate. The two front end surfaces of the bent pipe are fixedly connected to two connecting seats, and a connecting wheel is rotatably connected between the two connecting seats on each side. A rotating shaft is fixedly passed through the inner side of the connecting wheel, and both ends of the rotating shaft respectively rotate through the side surfaces of the connecting seats. A spherical head is provided at one end of the rotating shaft, which contacts the inner wall of the connection between the outer bottle body and the outer spherical shell, and the center axis of the rotating shaft passes through the center of the outer spherical shell.

[0012] Preferably, deformation openings are respectively provided on the upper and lower surfaces of the curved pipe.

[0013] Preferably, a limiting ring is fixedly sleeved at the front end of the outer surface of the inner bottle mouth, and the rear surface of the limiting ring contacts the front end surface of the outer bottle mouth.

[0014] Preferably, the tightening mechanism includes a connecting plate fixedly connected to the rear end of the inner bottle mouth, and the outer surface of the connecting plate is respectively inserted with a plurality of limiting rods arranged in a circular array through elastic mechanisms, and the front surface of the limiting rod is provided with a friction surface, which contacts the inner wall of the inner bottle body.

[0015] Preferably, the elastic mechanism includes a slide groove opened on the outer surface of the connecting disk, one end of the limiting rod is inserted into the slide groove and fixedly connected with an anti-slip edge, the anti-slip edge slides with the inner wall of the slide groove, a compression spring is arranged on the inner side of the slide groove, one end of the compression spring is against the surface of the anti-slip edge, and a sealing plate is fixedly installed on the rear surface of the connecting disk.

[0016] Preferably, at least two mounting bolts are slidably provided through the rear surface of the sealing plate, and the front end threads of the mounting bolts are inserted into the rear surface of the connecting plate.

[0017] Preferably, the front end of the outer bottle body is fixedly connected to the first circle body, the front surface of the first circle body is fixedly connected to a plurality of connecting columns arranged in a circular array, the front ends of the plurality of connecting columns are commonly fixedly connected to the second circle body, and the outer surface of the outer bottle mouth is welded to the first circle body, the connecting columns and the second circle body.

[0018] Preferably, an air pressure valve is fixedly installed at the front end of the inner bottle mouth.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. When the outer bottle of the present invention is placed horizontally, it can disperse force and provide buffering when it contacts the ground;

[0021] 2. When the end of the present invention contacts the ground during vertical placement, it can disperse force and provide buffering effects;

[0022] 3. The installation process between the inner bottle mouth and the outer bottle mouth of the present invention is convenient, no punching equipment is required, and the connection is stable after installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural schematic diagram of a hydrogen storage cylinder of the present invention;

[0024] Figure 2 This is a cross-sectional view of the outer bottle body of a hydrogen storage gas bottle of the present invention;

[0025] Figure 3 It is a partial cross-sectional view of the rear end of a hydrogen storage cylinder of the present invention;

[0026] Figure 4 Another partial cross-sectional view of the rear end of a hydrogen storage cylinder of the present invention;

[0027] Figure 5 A hydrogen storage cylinder of the present invention Figure 4 Enlarged view of point A in the middle;

[0028] Figure 6 It is a partial cross-sectional view of the front end of a hydrogen storage cylinder of the present invention;

[0029] Figure 7 A hydrogen storage cylinder of the present invention Figure 6 Enlarged view of point B in the middle;

[0030] Figure 8 This is a schematic diagram of the inner bottle mouth of a hydrogen storage bottle of the present invention;

[0031] Fig. 9 This is a schematic diagram of the first circle of a hydrogen storage cylinder of the present invention.

[0032] 1. Outer bottle body; 2. Outer spherical shell; 3. Inner bottle body; 4. Inner spherical shell; 5. Bottom plate; 6. Elastic plate; 7. Upper plate; 8. Bend pipe; 9. Deformation mouth; 10. Connecting seat; 11. Connecting wheel; 12. Rotating shaft; 13. Spherical head; 14. Connecting rod; 15. Reinforcement plate; 16. Outer bottle mouth; 17. Inner bottle mouth; 18. Limiting ring; 19. Air pressure valve; 20. Connecting plate; 21. Slide groove; 22. Compression spring; 23. Limiting rod; 24. Friction surface; 25. Anti-slip edge; 26. Closing plate; 27. Mounting bolt; 28. First circle; 29. ​​Connecting column; 30. Second circle. DETAILED DESCRIPTION

[0033] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0034] like Figure 1-Figure 9 A hydrogen storage cylinder shown in the figure comprises an outer bottle body 1, the rear end of the outer bottle body 1 is fixedly connected to an outer spherical shell 2, the inner side of the outer bottle body 1 is provided with an inner bottle body 3, the front end of the inner bottle body 3 is fixedly connected to an outer bottle mouth 16, and the outer bottle mouth 16 is fixedly passed through the front end of the outer bottle body 1, the rear end of the inner bottle body 3 is fixedly connected to an inner spherical shell 4, the inner spherical shell 4 and the outer spherical shell 2 are both hemispherical in shape and are concentrically arranged, an upper plate 7 is slidably attached to the lower surface of the inner bottle body 3, a plurality of elastic plates 6 are fixedly connected to the lower surface of the upper plate 7, a bottom plate 5 is commonly fixedly connected to the front and rear ends of the lower sides of the plurality of elastic plates 6, a curved pipe 8 is commonly rotatably connected to the rear ends of the two side surfaces of the upper plate 7, the curved pipe 8 is located between the inner spherical shell 4 and the outer spherical shell 2, the central axis of the curved pipe 8 when rotating passes through the center of the inner spherical shell 4, the inner side of the outer bottle mouth 16 is threadedly connected to the inner bottle mouth 17, and a tightening mechanism is arranged at the rear end of the inner bottle mouth 17. The bottom plate 5, the elastic plate 6, the upper plate 7 and the curved pipe 8 are all made of carbon fiber material.

[0035] like Figure 3 , Figure 4 , Figure 5 As shown, reinforcement plates 15 are fixedly connected at the rear ends of the two side surfaces of the upper plate 7, and a connecting rod 14 is fixedly connected to the upper ends of the reinforcement plates 15. The two front end surfaces of the bent pipe 8 are fixedly connected to two connecting seats 10, and a connecting wheel 11 is rotatably connected between the two connecting seats 10 on each side. A rotating shaft 12 is fixedly passed through the inner side of the connecting wheel 11, and both ends of the rotating shaft 12 rotate through the side surfaces of the connecting seats 10, respectively. A spherical head 13 is provided at one end of the rotating shaft 12, and the spherical head 13 contacts the inner wall of the connection between the outer bottle body 1 and the outer spherical shell 2 to limit the position of the bent pipe 8 to prevent it from getting stuck during rotation. The center axis of the rotating shaft 12 passes through the center of the outer spherical shell 2, so that the bent pipe 8 can move between the inner spherical shell 4 and the outer spherical shell 2 when it rotates around the rotating shaft 12.

[0036] The upper and lower surfaces of the curved pipe 8 are respectively penetrated with deformation openings 9 to improve the deformation degree of the curved pipe 8 to achieve a better buffering effect.

[0037] like Figure 6 , Figure 8 As shown, a limiting ring 18 is fixedly sleeved at the front end of the outer surface of the inner bottle mouth 17, and the rear surface of the limiting ring 18 contacts the front end surface of the outer bottle mouth 16. The limiting ring 18 can prevent the inner bottle mouth 17 from rotating excessively during installation.

[0038] like Figure 6 , Figure 7 , Figure 8 As shown, the tightening mechanism includes a connection plate 20 fixedly connected to the rear end of the inner bottle mouth 17, and a plurality of limiting rods 23 arranged in a circular array are inserted on the outer surface of the connection plate 20 through elastic mechanisms. The front surface of the limiting rod 23 is provided with a friction surface 24, and the friction surface 24 contacts the inner wall of the inner bottle body 3. The surface of the friction surface 24 is provided with convex patterns to increase the stability of the limiting rod 23 when in contact and prevent the problem of looseness.

[0039] The elastic mechanism includes a slide groove 21 provided on the outer surface of the connection disk 20, one end of the limiting rod 23 is inserted into the slide groove 21 and fixedly connected with an anti-slip edge 25, the anti-slip edge 25 is slidably matched with the inner wall of the slide groove 21, a compression spring 22 is provided on the inner side of the slide groove 21, one end of the compression spring 22 is against the surface of the anti-slip edge 25, and a sealing plate 26 is fixedly installed on the rear surface of the connection disk 20. The anti-slip edge 25 can prevent the end of the limiting rod 23 from being separated from the inner side of the slide groove 21 by the elastic force.

[0040] The rear surface of the sealing plate 26 is slidably penetrated by at least two mounting bolts 27, and the front end of the mounting bolts 27 is threadedly inserted into the rear surface of the connecting plate 20. After the mounting bolts 27 are unscrewed, the compression spring 22 and the limiting rod 23 can be assembled.

[0041] like Fig. 9 As shown, the front end of the outer bottle body 1 is fixedly connected to a first ring body 28, the front surface of the first ring body 28 is fixedly connected to a plurality of connecting posts 29 arranged in a circular array, the front ends of the plurality of connecting posts 29 are commonly fixedly connected to a second ring body 30, and the outer surface of the outer bottle mouth 16 is welded to the first ring body 28, the connecting posts 29 and the second ring body 30. During welding, the welding material travels around the position between the first ring body 28 and the second ring body 30, which plays a role in guiding the welding position and brings convenience to the welding process.

[0042] like Figure 6 As shown, a pressure valve 19 is fixedly installed at the front end of the inner bottle mouth 17. This is a common matching usage mode, which makes the release of internal hydrogen easy to control.

[0043] During the placement process, under the action of gravity, the bottom plate 5 and the upper plate 7 will always be at the lower surface of the inner bottle body 3, and the outer bottle body 1 will contact the ground. When it is hit, it will squeeze the bottom plate 5, and the force applied to the bottom plate 5 will continue to be transmitted upward and transmitted to the upper plate 7 through the elastic plate 6. Since the upper plate 7 has a large contact area with the lower surface of the inner bottle body 3, the force applied during the collision will be effectively dispersed to prevent the problem of damage caused by bumps. In this process, since the outer bottle body 1 will be slightly deformed, the elastic plate 6 will be deformed, that is, the elastic plate 6 achieves a buffering effect while transmitting the force. In summary, it has a better anti-fall protection effect.

[0044] During the vertical transportation process, under the action of gravity, the bottom plate 5 and the upper plate 7 will move downward, and under the action of the spherical head 13, the downward sliding position is limited to ensure that the curved pipe 8 rotates around the rotating shaft 12 without getting stuck. In the event of a collision, the outer spherical shell 2 contacts the ground and transmits the force to the curved pipe 8. The two ends of the curved pipe 8 disperse the force to the two sides of the upper plate 7, achieving a better force distribution effect and preventing damage from collisions. During this process, the outer spherical shell 2 will undergo slight deformation. Due to the design of the deformation mouth 9, the curved pipe 8 can be squeezed and deformed, achieving a buffering effect, and playing an anti-fall protection effect on the end position.

[0045] During the assembly process of the inner bottle mouth 17, the end of the limiting rod 23 is first pressed, and then the limiting rod 23 is moved to the inner side of the slide groove 21, and then the inner bottle mouth 17 is screwed into the outer bottle mouth 16. When the position of the connecting plate 20 reaches the inner side of the inner bottle body 3, under the elastic force of the compression spring 22, the limiting rod 23 extends outward, and the friction surface 24 contacts the inner wall of the inner bottle body 3. Since the friction surface 24 contacts the inner wall of the inner bottle body 3 to generate friction, the inner air pressure can be effectively prevented from causing the threaded connection between the inner bottle mouth 17 and the outer bottle mouth 16 to loosen. The installation process is convenient and does not require the aid of stamping equipment.

[0046] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A hydrogen storage cylinder, comprising an outer cylinder body (1), characterized in that: The rear end of the outer bottle body (1) is fixedly connected to an outer spherical shell (2), an inner bottle body (3) is arranged on the inner side of the outer bottle body (1), a front end of the inner bottle body (3) is fixedly connected to an outer bottle mouth (16), and the outer bottle mouth (16) is fixedly passed through the front end of the outer bottle body (1), and a rear end of the inner bottle body (3) is fixedly connected to an inner spherical shell (4), the inner spherical shell (4) and the outer spherical shell (2) are both hemispherical in shape and are concentrically arranged, and an upper plate (7) is slidably attached to the lower surface of the inner bottle body (3), and the upper plate (7) is A plurality of elastic plates (6) are fixedly connected to the lower surface, and the front and rear ends of the lower sides of the plurality of elastic plates (6) are commonly fixedly connected to the bottom plate (5). The rear ends of the two side surfaces of the upper plate (7) are commonly rotatably connected to a curved pipe (8), the curved pipe (8) is located between the inner spherical shell (4) and the outer spherical shell (2), and the central axis of the curved pipe (8) during rotation passes through the center of the inner spherical shell (4). The inner side of the outer bottle mouth (16) is threadedly connected to the inner bottle mouth (17), and a tightening mechanism is provided at the rear end of the inner bottle mouth (17); During the placement process, under the action of gravity, the bottom plate (5) and the upper plate (7) are always located at the lower surface of the inner bottle body (3), and the outer bottle body (1) is in contact with the ground. When a collision occurs, the bottom plate (5) is squeezed and continues to be transmitted upwards, and is transmitted to the upper plate (7) through the elastic plate (6), thereby dispersing the force acting during the collision; During the vertical transport process, under the action of gravity, the bottom plate (5) and the upper plate (7) move downward, the outer spherical shell (2) contacts the ground, and transmits the force to the curved pipe (8). The two ends of the curved pipe (8) disperse the force to the two sides of the upper plate (7), thereby achieving a force distribution effect.

2. A hydrogen storage cylinder according to claim 1, characterized in that: The rear ends of the two side surfaces of the upper plate (7) are respectively fixedly connected to reinforcing plates (15), the upper ends of the reinforcing plates (15) are fixedly connected to connecting rods (14), the two front end surfaces of the bent pipe (8) are respectively fixedly connected to two connecting seats (10), a connecting wheel (11) is rotatably connected between the two connecting seats (10) on each side, a rotating shaft (12) is fixedly passed through the inner side of the connecting wheel (11), the two ends of the rotating shaft (12) respectively rotatably pass through the side surfaces of the connecting seats (10), a spherical head (13) is provided at one end of the rotating shaft (12), the spherical head (13) contacts the inner wall of the connection between the outer bottle body (1) and the outer spherical shell (2), and the center axis of the rotating shaft (12) passes through the center of the outer spherical shell (2).

3. A hydrogen storage cylinder according to claim 1, characterized in that: The upper and lower surfaces of the curved pipe (8) are respectively provided with deformation openings (9).

4. A hydrogen storage cylinder according to claim 1, characterized in that: A limiting ring (18) is fixedly sleeved at the front end of the outer surface of the inner bottle mouth (17), and the rear surface of the limiting ring (18) contacts the front end surface of the outer bottle mouth (16).

5. A hydrogen storage cylinder according to claim 1, characterized in that: The tightening mechanism comprises a connection plate (20) fixedly connected to the rear end of the inner bottle mouth (17); a plurality of limiting rods (23) arranged in a circular array are respectively inserted on the outer surface of the connection plate (20) through elastic mechanisms; a friction surface (24) is provided on the front surface of the limiting rod (23); and the friction surface (24) contacts the inner wall of the inner bottle body (3).

6. A hydrogen storage cylinder according to claim 5, characterized in that: The elastic mechanism comprises a slide groove (21) provided on the outer surface of the connecting plate (20), one end of the limiting rod (23) is inserted into the slide groove (21) and fixedly connected to an anti-slip edge (25), the anti-slip edge (25) is slidably matched with the inner wall of the slide groove (21), a compression spring (22) is provided on the inner side of the slide groove (21), one end of the compression spring (22) is pressed against the surface of the anti-slip edge (25), and a sealing plate (26) is fixedly installed on the rear surface of the connecting plate (20).

7. A hydrogen storage cylinder according to claim 6, characterized in that: No less than two mounting bolts (27) are slidably provided on the rear surface of the sealing plate (26), and the front ends of the mounting bolts (27) are threadedly inserted into the rear surface of the connecting plate (20).

8. A hydrogen storage cylinder according to claim 1, characterized in that: The front end of the outer bottle body (1) is fixedly connected to a first ring body (28), the front surface of the first ring body (28) is fixedly connected to a plurality of connecting columns (29) arranged in a circular array, the front ends of the plurality of connecting columns (29) are commonly fixedly connected to a second ring body (30), and the outer surface of the outer bottle mouth (16) is welded to the first ring body (28), the connecting columns (29) and the second ring body (30).

9. A hydrogen storage cylinder according to claim 1, characterized in that: An air pressure valve (19) is fixedly inserted at the front end of the inner bottle mouth (17).

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