阅读说明：本技术 高压储氢瓶 (High-pressure hydrogen storage bottle ) 是由 梁晨 陈雨时 张振翀 原诚寅 于 2021-07-13 设计创作，主要内容包括：本发明公开了一种高压储氢瓶,包括：内胆和缠绕层,内胆的外侧面上设有凹槽,凹槽中填充有编织层；缠绕层缠绕于内胆的外壁上,且将编织层包裹在内。本发明的高压储氢瓶的容重比、爆破压力高,使用寿命长,且能够显著降低生产成本,提高生产效率。(The invention discloses a high-pressure hydrogen storage bottle, comprising: the outer side surface of the inner container is provided with a groove, and a braid layer is filled in the groove; the winding layer is wound on the outer wall of the inner container, and wraps the weaving layer. The high-pressure hydrogen storage bottle has high volume-weight ratio and high bursting pressure, has long service life, and can obviously reduce the production cost and improve the production efficiency.)

1. A high pressure hydrogen storage cylinder, comprising: the outer side surface of the inner container is provided with a groove, and a braid layer is filled in the groove; the winding layer is wound on the outer wall of the inner container, and the weaving layer is wrapped inside.

2. The high pressure hydrogen storage bottle of claim 1, wherein the inner container comprises a straight cylinder section and covers respectively sealed at two ends of the straight cylinder section, and the groove is arranged on the outer side surface of the straight cylinder section.

3. The high pressure hydrogen storage cylinder according to claim 2, wherein the sealing cover is arc-shaped, and the sealing cover is seamlessly connected with the end of the straight cylinder section and the connection part adopts arc transition.

4. The high pressure hydrogen storage cylinder according to claim 2, wherein the groove is annular and is provided on the outer side surface of the straight cylinder section in the circumferential direction of the straight cylinder section, and the width of the groove is equal to the length of the straight cylinder section.

5. The high pressure hydrogen storage bottle of claim 4, wherein the groove comprises a bottom surface and side surfaces disposed on both sides of the bottom surface, and the side surfaces are arc surfaces and are transitionally connected with the bottom surface through an arc.

6. The high pressure hydrogen storage cylinder of claim 1, wherein the thickness of said braid is equal to the depth of said grooves.

7. The high pressure hydrogen storage cylinder of claim 1, wherein the liner is a metal liner or a plastic liner.

8. The high pressure hydrogen storage cylinder of claim 1, wherein said wrap is a carbon fiber wrap.

9. The high pressure hydrogen storage cylinder of claim 1, wherein said woven layer comprises carbon fiber woven cloth.

10. The high pressure hydrogen storage bottle of claim 1, wherein the inner container has openings at both ends in the length direction, and the openings have connectors extending outward and penetrating through the wrapping layer.

Technical Field

The invention belongs to the technical field of hydrogen storage, and particularly relates to a high-pressure hydrogen storage bottle.

Background

The hydrogen can be contained in a gas bottle for transportation under high pressure (15.2-70.9 MPa), and the hydrogen is directly released through the regulation of a pressure reducing valve, so that the method is convenient and reliable, and is the most common and direct hydrogen storage mode. With the development of material science, a carbon fiber and aluminum composite material high-pressure gas cylinder is developed, the quality of the gas cylinder is greatly reduced, the capacity loading efficiency is improved, and high-pressure hydrogen storage becomes a vehicle-mounted hydrogen storage mode with competitive advantages. In the prior art, the high-pressure hydrogen storage bottle needs to be produced in a single piece, the number of winding layers is large, time consumption is long, winding redundancy is arranged in the straight cylinder section in order to guarantee the whole blasting capacity, the weight of the liner and the fiber consumption are large, and the whole weight is large.

Therefore, it is desired to develop a high pressure hydrogen storage cylinder, which can reduce the weight of the inner container and the amount of fiber used, and improve the burst pressure and the volume-to-weight ratio of the high pressure hydrogen storage cylinder.

Disclosure of Invention

The invention aims to provide a high-pressure hydrogen storage bottle, which reduces the quality of an inner container and the thickness of a winding layer and improves the bearing capacity.

In order to achieve the above object, the present invention provides a high pressure hydrogen storage cylinder comprising: the outer side surface of the inner container is provided with a groove, and a braid layer is filled in the groove; the winding layer is wound on the outer wall of the inner container, and the weaving layer is wrapped inside.

Optionally, the inner container comprises a straight cylinder section and covers respectively sealed at two ends of the straight cylinder section, and the groove is formed in the outer side surface of the straight cylinder section.

Optionally, the sealing cover is arc-shaped, the sealing cover is connected with the end of the straight cylinder section in a seamless manner, and the joint is in arc transition.

Optionally, the groove is annular and is arranged on the outer side surface of the straight cylinder section along the circumferential direction of the straight cylinder section, and the width of the groove is equal to the length of the straight cylinder section.

Optionally, the groove includes a bottom surface and side surfaces disposed on two sides of the bottom surface, and the side surfaces are arc surfaces and are in arc transition connection with the bottom surface.

Optionally, the thickness of the braid is equal to the depth of the groove.

Optionally, the inner container is a metal inner container or a plastic inner container.

Optionally, the winding layer is a carbon fiber winding layer.

Optionally, the woven layer comprises woven carbon fibre cloth.

Optionally, the both ends of the length direction of inner bag are equipped with the opening respectively, be equipped with the joint on the opening, the joint extends outward and passes the winding layer.

The invention has the beneficial effects that: the inner container of the high-pressure hydrogen storage bottle only accounts for 10-15% of the pressure bearing capacity and mainly plays a role in shaping and sealing, so that the outer side surface of the inner container is provided with the grooves, and the weaving layer is laid in the grooves, thereby not only reducing the weight of the inner container, but also improving the pressure bearing capacity of the part and the volume-weight ratio of the high-pressure hydrogen storage bottle; the thickness of the winding layer is reduced by additionally arranging the weaving layer, the production speed of a single high-pressure hydrogen storage bottle is improved, and the production period is shortened.

Additional features and advantages of the invention will be set forth in the detailed description which follows.

Drawings

The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts throughout.

Fig. 1 shows a schematic structural view of a high-pressure hydrogen storage cylinder according to an embodiment of the present invention.

Description of the reference numerals

1. A winding layer; 2. weaving layer; 3. an inner container.

Detailed Description

Preferred embodiments of the present invention will be described in more detail below. While the following describes preferred embodiments of the present invention, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

The invention discloses a high-pressure hydrogen storage bottle, comprising: the outer side surface of the inner container is provided with a groove, and a braid layer is filled in the groove; the winding layer is wound on the outer wall of the inner container, and wraps the weaving layer.

Specifically, the inner container of the high-pressure hydrogen storage bottle only accounts for 10-15% of the pressure bearing capacity and mainly plays a role in shaping and sealing, so that the outer side surface of the inner container is provided with the grooves, and the weaving layer is laid in the grooves, thereby not only reducing the weight of the inner container, but also improving the pressure bearing capacity of the position and the volume-weight ratio of the high-pressure hydrogen storage bottle; the thickness of the winding layer is reduced by additionally arranging the weaving layer, the production speed of a single high-pressure hydrogen storage bottle is improved, and the production period is shortened.

As an alternative scheme, the inner container comprises a straight cylinder section and sealing covers respectively sealed at two ends of the straight cylinder section, and the groove is formed in the outer side surface of the straight cylinder section.

Specifically, the straight cylinder section is provided with a groove to realize the thinning treatment of the straight cylinder section and reduce the weight of the liner;

further, the groove can be directly formed in the machining process through a die, and can also be machined in the later stage through machining.

As an alternative, the sealing cover is arc-shaped, the sealing cover is in seamless connection with the end part of the straight cylinder section, and the connection part adopts arc transition.

Particularly, the sharp corner cannot be avoided through arc transition connection, so that stress concentration at the sharp corner is avoided, and the service life is influenced.

As an alternative scheme, the groove is annular and is arranged on the outer side surface of the straight cylinder section along the circumferential direction of the straight cylinder section, and the width of the groove is equal to the length of the straight cylinder section.

Specifically, the grooves cover the outer side of the whole straight cylinder section, namely the whole straight cylinder section is thinned, so that the thickness of the straight cylinder section is uniform.

As an alternative, the groove comprises a bottom surface and side surfaces arranged on two sides of the bottom surface, wherein the side surfaces are arc surfaces and are in transition connection with the bottom surface through arcs.

Particularly, the sharp corner cannot be avoided through arc transition connection, so that stress concentration at the sharp corner is avoided, and the service life is influenced.

Alternatively, the thickness of the braid is equal to the depth of the grooves.

Specifically, the weaving layer can be filled in the groove completely, and can be attached to the winding layer completely.

As an alternative, the inner container is a metal inner container or a plastic inner container.

The specific body and the material of the inner container can be selected according to actual use requirements, and are not limited to metal and plastic.

Alternatively, the winding layer is a carbon fiber winding layer.

Alternatively, the woven layer comprises woven carbon fiber cloth.

Specifically, the wrapping layer is the same as the woven material and can be better bonded.

As an alternative scheme, two ends of the inner container in the length direction are respectively provided with an opening, the openings are provided with joints, and the joints extend outwards and penetrate through the winding layer.

Examples

Fig. 1 shows a schematic configuration diagram of the high-pressure hydrogen storage cylinder of the present embodiment.

As shown in fig. 1, the inner container 3 comprises a straight cylinder section and sealing covers respectively sealed at two ends of the straight cylinder section, the sealing covers are arc-shaped, the sealing covers are seamlessly connected with the end parts of the straight cylinder section, and the connection positions adopt arc transition; the groove is arranged on the outer side surface of the straight cylinder section along the circumferential direction of the straight cylinder section, and the width of the groove is equal to the length of the straight cylinder section; the braid layer 2 is laid in the groove, and the groove is fully filled; the winding layer 1 is wound on the outer wall of the inner container 3, and wraps the knitting layer 2. Wherein, inner bag 3 is metal inner bag or plastics inner bag, and weaving layer 2 adopts carbon fiber woven cloth and weaving layer 2's thickness to equal with the degree of depth of recess, and winding layer 1 forms for the carbon fiber winding.

Openings are respectively arranged at two ends of the inner container 3 in the length direction, joints are arranged on the openings, and the joints extend outwards and penetrate through the winding layer 1.

In the high-pressure hydrogen storage bottle of the embodiment, the grooves are formed in the outer side surface of the inner container 3, and the braid layer 2 is laid in the grooves, so that the weight of the inner container 3 is reduced, the pressure bearing capacity of the position of the inner container 3 is improved, and the volume-weight ratio of the high-pressure hydrogen storage bottle is improved; the thickness of the winding layer 1 is reduced by additionally arranging the weaving layer 2, the production speed of a single high-pressure hydrogen storage bottle is improved, and the production period is shortened.

Attenuate processing is done at straight section of thick bamboo to inner bag 3, can be through mould direct forming in the course of working, also can handle the straight section of thick bamboo of inner bag through machining in the later stage, carbon fiber woven layer 2 adopts the carbon fiber of weaving good directly to spread in the straight section of thick bamboo recess of inner bag 3, carbon fiber woven layer 2 adopts the preimpregnation material, the direct solidification in later stage can, carbon fiber woven layer 2 has spread the back, carry out the winding process on winding layer, in order to form carbon fiber winding layer 1, adopt carbon fiber wet process winding technology, combine weaving layer and winding layer.

Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.