CN217422915U - High-pressure gas storage cylinder - Google Patents

Abstract

The application belongs to the technical field of high-pressure vessel, especially relates to a high-pressure gas bomb, and high-pressure gas bomb includes: an inner container; the end socket is sleeved at the end part of the inner container; the auxiliary outer sleeve is sleeved on the outer walls of the inner container and the end enclosure and connected to the joint of the inner container and the end enclosure; and the fiber layer is connected to the inner container and the outer wall of the seal head and covers the auxiliary outer sleeve. The application provides a high-pressure gas bomb, can utilize supplementary overcoat and fibrous layer to guarantee the sealing performance of high-pressure gas bomb, make high-pressure gas bomb can bear great pressure, the design of cup jointing of head and inner bag simultaneously, can simplify the structural design of high-pressure gas bomb, and then reduce the shaping degree of difficulty and the manufacturing cost of high-pressure gas bomb, the big and with high costs problem of the high-pressure gas bomb shaping degree of difficulty among the prior art has effectively been solved, be favorable to the large-scale production of high-pressure gas bomb.

Description

High-pressure gas storage cylinder

Technical Field

The application belongs to the field of high-pressure containers, and particularly relates to a high-pressure gas storage cylinder.

Background

A gas cylinder (tank) is a device specially used for storing gas, and the specific structure and bearing pressure of the gas cylinder are different according to different stored gases. For example, a gas cylinder for storing hydrogen gas, which is capable of storing hydrogen gas at a high density, needs to be designed with a structure of sufficient strength to withstand the pressure from the internal hydrogen gas.

At present, a high-pressure gas storage cylinder for storing hydrogen generally comprises an inner container, a seal head and a fiber layer, wherein the inner container and the seal head are butted to form a closed inner cavity, and the fiber layer is coated on the outer walls of the inner container and the seal head so as to improve the overall structural strength of the high-pressure gas storage cylinder. However, the existing high-pressure gas cylinder has a complex connecting structure between the liner and the end socket, and the assembly precision requirement is high, so that the high-pressure gas cylinder has high molding difficulty and high production cost, and is not beneficial to large-scale production of the high-pressure gas cylinder.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the application is to provide a high-pressure gas bomb to solve the big and high technical problem of manufacturing cost of the high-pressure gas bomb shaping degree of difficulty that exists among the prior art.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions: there is provided a high pressure gas cylinder comprising:

an inner container;

the end socket is sleeved at the end part of the inner container;

the auxiliary outer sleeve is sleeved on the outer walls of the inner container and the end enclosure and connected to the joint of the inner container and the end enclosure;

and the fiber layer is connected to the inner container and the outer wall of the seal head and covers the auxiliary outer sleeve.

Optionally, the head includes pipe portion, shoulder and head connecting portion that connect gradually, the pipe portion is used for supplying gas business turn over the high-pressure gas bomb, the lateral wall of head connecting portion connect in the outer wall of inner bag.

Optionally, the high-pressure gas cylinder further comprises an auxiliary inner sleeve, and the auxiliary inner sleeve is connected to the end socket and the inner wall of the inner container and covers the joint of the end socket and the inner container.

Optionally, the auxiliary inner sleeve has a first end and a second end which are oppositely arranged, the first end extends towards the pipe part and covers at least one half of the inner wall of the shoulder part in the axial length.

Optionally, a limiting protrusion is formed on one side of the auxiliary inner sleeve close to the end enclosure, and one side of the limiting protrusion abuts against the end face of the inner container extending into the end enclosure.

Optionally, the inner container comprises an inner container main body and an inner container connecting portion connected to the inner container main body, and the outer wall of the inner container connecting portion is connected to the inner wall of the sealing head connecting portion.

Optionally, a connection structure is formed between the inner container connection part and the end enclosure connection part.

Optionally, the connecting structure includes a wavy surface structure formed on the outer wall of the liner connecting portion and the inner wall of the end enclosure connecting portion, and the outer wall of the liner connecting portion and the inner wall of the end enclosure connecting portion are attached to each other.

Optionally, the young modulus of the auxiliary outer sleeve is greater than the young modulus of the inner container, and/or the young modulus of the seal head is greater than the young modulus of the inner container.

Optionally, the fiber layer includes a first fiber layer and a second fiber layer, the first fiber layer is connected to the outer walls of the end socket and the inner container and covers the auxiliary outer sleeve, and the second fiber layer is connected to the outer wall of the first fiber layer.

The embodiment of the application provides a high-pressure gas bomb has following beneficial effect at least: compared with the prior art, the high-pressure gas storage bottle provided by the embodiment of the application forms a relatively airtight inner cavity by sleeving the end socket on the end part of the inner container, seals the joint of the inner container and the end socket by utilizing the auxiliary outer sleeve sleeved on the outer walls of the inner container and the end socket to improve the airtight performance of the end socket and the inner container, and finally improves the integral structural strength of the high-pressure gas storage bottle by utilizing the fiber layers of the inner container and the outer walls of the end socket. Meanwhile, under the action of the gas on the inner wall, a self-tightening effect can be formed between the seal head and the inner container by means of the limiting effect of the fiber layer, and the sealing effect of the high-pressure gas storage bottle is further improved. So, just can utilize supplementary overcoat and fibrous layer to guarantee the sealing performance of high-pressure gas bomb, make the high-pressure gas bomb bear great pressure, the cup joint design of head and inner bag simultaneously can simplify the structural design of high-pressure gas bomb, and then reduces the shaping degree of difficulty and the manufacturing cost of high-pressure gas bomb, has effectively solved the big and with high costs problem of the high-pressure gas bomb shaping degree of difficulty among the prior art, is favorable to the large-scale production of high-pressure gas bomb.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic perspective view of a high-pressure gas cylinder provided in an embodiment of the present application;

FIG. 2 is a top view of a high pressure gas cylinder provided in accordance with an embodiment of the present application;

FIG. 3 is a sectional view taken along line A-A of FIG. 2;

FIG. 4 is an enlarged view of a portion of FIG. 3 at B;

fig. 5 is a schematic diagram of an explosion structure provided in an embodiment of the present application.

Wherein, in the figures, the respective reference numerals:

10. an inner container; 11. a liner body; 12. an inner container connecting part; 13. a wavy surface; 131. a protrusion; 132. a concave surface; 20. sealing the end; 21. a seal head connecting part; 22. a shoulder portion; 23. a tube portion; 231. an air flow channel; 30. an auxiliary outer sleeve; 40. an auxiliary inner sleeve; 401. a first end; 402. a second end; 41. a limiting bulge; 50. a fibrous layer; 51. a first fibrous layer; 52. a second fibrous layer.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

The various features and embodiments described in the embodiments may be combined in any suitable manner, for example, different embodiments may be formed by combining different features/embodiments, and in order to avoid unnecessary repetition, various possible combinations of features/embodiments will not be further described in this application.

At present, a high-pressure gas storage cylinder for storing hydrogen generally comprises an inner container, a seal head and a fiber layer, wherein the inner container and the seal head are butted to form a closed inner cavity, and the fiber layer is coated on the outer walls of the inner container and the seal head so as to improve the overall structural strength of the high-pressure gas storage cylinder. However, the existing high-pressure gas cylinder has a complex connecting structure between the liner and the end socket, and the assembly precision requirement is high, so that the high-pressure gas cylinder has high molding difficulty and high production cost, and is not beneficial to large-scale production of the high-pressure gas cylinder.

From this, this application embodiment provides a high-pressure gas bomb, and it can solve among the prior art high-pressure gas bomb shaping degree of difficulty and problem with high costs greatly, is favorable to the large-scale production of high-pressure gas bomb.

Referring to fig. 1 to 3 together, the high pressure gas cylinder provided in the embodiment of the present application includes an inner container 10, a closure 20, an auxiliary outer sleeve 30, and a fiber layer 50. The end enclosure 20 may be sleeved at an end of the inner container 10, so that a relatively sealed inner cavity is formed between the end enclosure 20 and the inner container 10, so as to accommodate and store gas, and referring to fig. 4 and 5, the auxiliary outer sleeve 30 may be disposed on outer walls of the inner container 10 and the end enclosure 20 and connected to a joint of the inner container 10 and the end enclosure 20, so as to shield and cover the joint of the inner container 10 and the end enclosure 20. The fiber layer 50 is connected to the outer walls of the inner container 10 and the sealing head 20 and covers the auxiliary outer cover 30. In specific application, the high-pressure gas storage bottle of the embodiment can be used for storing various gases, such as hydrogen or natural gas, when the high-pressure gas storage bottle is used, the end socket 20 and the inner container 10 can be connected in a matched mode, the auxiliary outer sleeve 30 is connected to the joint of the end socket 20 and the inner container 10, the sealing performance of the end socket 20 and the inner container 10 is improved, and finally the fiber layer 50 is wound on the end socket 20, the inner container 10 and the auxiliary outer sleeve 30, so that the overall structural strength of the high-pressure gas storage bottle is improved. So, after high-pressure gas such as hydrogen is filled into inside the high-pressure gas bomb, the gas can form the effort to head 20 and inner bag 10 from inside, especially can form great meeting an emergency at the junction of head 20 and inner bag 10, and supplementary overcoat 30 in this embodiment is used in the junction of head 20 and inner bag 10, can show the meeting an emergency that reduces the junction of head 20 and inner bag 10, effectively improve the uneven problem of strain distribution of high-pressure gas bomb, guarantee that the high-pressure gas bomb can not appear the circumstances that local strain rises, effectively improve the sealed effect of high-pressure gas bomb. Meanwhile, under the action of the inner wall gas, a self-tightening effect can be formed between the end socket 20 and the liner 10 by means of the limiting effect of the fiber layer 50, and the sealing effect of the high-pressure gas storage bottle is further improved. Like this, just can utilize the structure that head 20 and inner bag 10 cup jointed to simplify the structural design of high-pressure gas bomb, reduce the design cost and the shaping degree of difficulty of high-pressure gas bomb, can utilize supplementary overcoat 30 and fibrous layer 50 to guarantee the sealing performance of high-pressure gas bomb simultaneously again, be favorable to the large-scale production of high-pressure gas bomb.

In a specific application, the specific size of the high-pressure gas cylinder of this embodiment may be appropriately selected according to actual conditions, and the high-pressure gas cylinder of this embodiment is particularly suitable for a small-diameter design, for example, the inner diameter of the inner container 10 may be between 50mm and 80mm, and the wall thickness of the inner container 10 may be between 3mm and 5 mm. When the gas storage device is used, the high-pressure gas storage cylinders with proper quantity can be arranged in an array mode according to the required gas quantity, and the gas storage device is particularly suitable for relatively effective moving facilities in spaces such as vehicles and ships and can effectively improve the space utilization rate. Meanwhile, for the pressure container, the wall thickness is in direct proportion to the borne large pressure and the diameter of the inner container 10, and is in inverse proportion to the material strength of the inner container 10, and the diameter of the inner container 10 of the embodiment is relatively small, so that the thickness of the fiber layer 50 can be reduced, the design difficulty of the fiber layer 50 is favorably reduced, the fiber layer 50 accumulated at the position of the seal head 20 is reduced, and the utilization rate of fibers is improved.

As an alternative embodiment of this embodiment, please refer to fig. 4 and 5, the sealing head 20 includes a tube portion 23, a shoulder portion 22 and a sealing head connecting portion 21, which are connected in sequence, the tube portion 23 may be used for supplying gas to and from the high pressure gas storage bottle, and a side wall of the sealing head connecting portion 21 may be connected to an outer wall of the inner container 10. Specifically, pipe portion 23 can have airflow channel 231, and pipe portion 23 can be used for being connected with pneumatic valve or pipeline to realize inflating and deflating of high pressure gas bomb, head connecting portion 21 can with the outer wall butt of inner bag 10, under the effect of inside high-pressure gas and outside supplementary overcoat 30 and fibrous layer 50, the inner wall of head connecting portion 21 can tightly laminate with the outer wall of inner bag 10. The shoulder 22 may be a curved surface structure, such as a spherical surface structure with a predetermined diameter, or a plurality of spherical surface structures with different diameters connected in sequence. In the specific application, head 20 can be integrated into one piece to improve the holistic structural strength of head 20.

In specific application, the maximum outer diameter of the end socket 20 can be less than one third of the axial length of the liner 10, so that the condition of line sliding during winding of the fiber layer 50 is avoided, and production of the high-pressure gas storage bottle is facilitated. The minimum outer diameter of the head 20 (i.e., the diameter of the tube portion 23) may depend on the size of the pipes and valves being connected, as well as the stored gas pressure requirements, e.g., 70MPa gas pressure, 87.5MPa hydrostatic test, 157.5MPa burst pressure, etc. the tube portion 23 may be subjected to.

As an alternative embodiment of this embodiment, referring to fig. 4 and 5, the high pressure gas storage cylinder further includes an auxiliary inner sleeve 40, the auxiliary inner sleeve 40 may be connected to the inner walls of the sealing head 20 and the inner container 10, and the auxiliary inner sleeve 40 may cover the connection between the sealing head 20 and the inner wall of the inner container 10. Specifically, one side of the auxiliary inner sleeve 40 can be attached to the inner walls of the seal head 20 and the liner 10, the auxiliary inner sleeve 40 can be tightly attached to the inner walls of the seal head 20 and the liner 10 under the action of the gas in the high-pressure gas storage bottle, and the sealing performance of the high-pressure gas storage bottle is further improved by using the auxiliary inner sleeve 40. Meanwhile, the auxiliary inner sleeve 40 can also stabilize the relative position of the seal head 20 and the liner 10, and ensure the coaxiality of the seal head 20 and the liner 10.

As an alternative embodiment of this embodiment, please refer to fig. 4 and 5, the auxiliary inner sleeve 40 has a first end 401 and a second end 402 that are oppositely disposed, specifically, the auxiliary inner sleeve 40 may have a ring structure, and the first end 401 and the second end 402 of the auxiliary inner sleeve 40 may be respectively located at an opening position of the auxiliary inner sleeve 40, wherein the first end 401 may extend toward the tube portion 23, and the first end 401 of the auxiliary inner sleeve 40 may cover at least one half of the axial length of the shoulder portion 22 and at most the position of the tube portion 23 of the sealing head 20 (but not covering the air flow channel 231 of the sealing head 20), that is, the first end 401 of the auxiliary inner sleeve 40 may extend along the inner wall of the sealing head 20 to cover at least one half of the axial length of the shoulder portion 22 of the sealing head 20 (i.e., the axial direction of the high pressure air storage bottle). With such a design, when the high-pressure gas cylinder stores high-pressure gas, the strain of the high-pressure gas cylinder in the axial direction is greater than the strain in the circumferential direction, but the first end 401 of the auxiliary inner sleeve 40 of the present embodiment extends in the direction of the tube portion 23, so that self-sealing can be achieved by the circumferential and axial internal pressures, and it is ensured that the gas inside does not leak from the joint between the closure 20 and the inner container 10.

As an optional embodiment of this embodiment, a limiting protrusion 41 may be formed on a side of the auxiliary inner sleeve 40 close to the end socket 20, and a side of the limiting protrusion 41 may abut against an end surface of the inner container 10 extending into the end socket 20. Specifically, after the end socket 20 is sleeved on the inner container 10, one end of the inner container 10 extending into the end socket 20 may be protruded 131 and an inner wall of the end socket 20, and the limiting protrusion 41 of the auxiliary inner sleeve 40 in this embodiment may abut against an end surface of the end of the inner container 10. Due to the design, on one hand, the limit bulge 41 of the auxiliary inner sleeve 40 can be abutted to the joint of the inner container 10 and the end socket 20, and under the action of gas, the relative positions of the auxiliary inner sleeve 40, the end socket 20 and the inner container 10 can be ensured, so that the auxiliary inner sleeve 40 is prevented from deviating; on the other hand, the limiting protrusion 41 can block the joint of the liner 10 and the end enclosure 20, and further improves the sealing performance of the liner 10 and the end enclosure 20.

In specific application, the thickness of the first end 401 of the auxiliary inner sleeve 40 can be 1mm to 2mm, the outer wall of the auxiliary inner sleeve 40 can be matched with the inner wall of the seal head 20, the height of the limiting protrusion 41 can be 0.5mm to 2mm, the length from the limiting protrusion 41 to the second end 402 of the auxiliary inner sleeve 40 can be 5mm to 50mm, the thickness of the second end 402 of the auxiliary inner sleeve 40 can be 1mm to 3mm, and the second end 402 of the auxiliary inner sleeve 40 can be provided with a fillet.

As an optional implementation manner of this embodiment, please refer to fig. 4 and 5, the liner 10 includes a liner main body 11 and a liner connecting portion 12, the liner connecting portion 12 is connected to the liner main body 11, and an outer wall of the liner connecting portion 12 may be connected to an inner wall of the sealing head connecting portion 21. Specifically, the outer wall of inner bag connecting portion 12 can be inwards sunken to make head connecting portion 21 and inner bag 10 be connected the butt joint back, junction between them can be smooth and transition, can be favorable to the cup jointing of supplementary overcoat 30 and the winding of fibrous layer 50 on the one hand, prevent head connecting portion 21 and inner bag connecting portion 12 scratch supplementary overcoat 30 and fibrous layer 50, on the other hand, can also effectively reduce the thickness of head connecting portion 21 and inner bag connecting portion 12 junction, increase the capacity of high pressure gas bomb.

As one optional embodiment of this embodiment, a connection structure may be formed between the liner connection portion 12 and the end enclosure connection portion 21, so that the connection structure may be used to improve the connection strength and the sealing performance between the liner connection portion 12 and the end enclosure connection portion 21.

As one optional implementation manner of this embodiment, the connection structure may be a wavy surface structure 13, the wavy surface structure 13 may be formed in the outer wall of the liner connection portion 12 and the interior of the head connection portion 21, and the outer wall of the liner connection portion 12 and the inner wall of the head connection portion 21 may be attached to each other. Specifically, for example, the inner bag connecting portion 12, the outer wall of the inner bag connecting portion 12 may be raised and lowered from one end connected to the inner bag main body 11 to the other end to form a structure of the protrusion 131 and the concave 132, and one or more sets of the protrusion 131 and the concave 132 may be provided, or only one protrusion 131 or one concave 132 may be provided. Correspondingly, the wavy surface structure 13 on the inner wall of the end enclosure connecting part 21 is matched with the wavy surface 13 of the liner connecting part 12, so that the connection strength and the sealing performance of the wavy surface structure 13 can be improved.

In specific application, taking the wave surface structure 13 on the inner wall of the head connecting portion 21 as an example, the radius of the virtual circle corresponding to the highest point of the wave surface structure 13 (i.e., the highest point of the protrusion 131) may be smaller than the radius of the virtual circle corresponding to the end (close to the shoulder 22) of the wave surface structure 13 (i.e., the clam essence of the virtual circle corresponding to the connection between the head connecting portion 21 and the shoulder 22), and the depth of the concave surface 132 in the wave surface structure 13 may be 25% to 40% of the thickness of the shoulder 22 of the head 20, so as to ensure that the head connecting portion 21 and the liner connecting portion 12 have sufficient strength, and at the same time, effectively avoid the problem of stress concentration.

As an alternative to this embodiment, referring to fig. 4 and 5, the auxiliary outer sleeve 30 may have a ring-shaped structure, the auxiliary outer sleeve 30 may be formed by forging, extrusion molding, etc., the thickness of the auxiliary outer sleeve 30 may be between 0.1mm and 1mm, and the width of the auxiliary outer sleeve 30 may be between 10mm and 50 mm. In specific application, when the auxiliary outer sleeve 30 is installed, the auxiliary outer sleeve 30 can be heated to a set temperature (for example, between 100 and 120 degrees) to expand the auxiliary outer sleeve 30, and then the auxiliary outer sleeve is sleeved on the outer walls of the inner container 10 and the end enclosure 20, when the temperature of the auxiliary outer sleeve 30 is recovered, the auxiliary outer sleeve 30 can be contracted and tightly sleeved on the inner container 10 and the end enclosure 20, and the assembly and production of the high-pressure gas storage bottle are facilitated.

As one optional implementation manner of this embodiment, the young's modulus of the auxiliary outer sleeve 30 may be greater than the young's modulus of the inner container 10, or the young's modulus of the end socket 20 is greater than the young's modulus of the inner container 10; alternatively, the young's modulus of the auxiliary outer cover 30 may be greater than the young's modulus of the inner container 10, and the young's modulus of the end socket 20 may be greater than the young's modulus of the inner container 10. In a specific application, the end socket 20, the inner container 10, the auxiliary outer sleeve 30 and the auxiliary inner sleeve 40 may be made of suitable materials according to different stored gases, for example, when the high-pressure gas storage cylinder is used for storing hydrogen gas, the end socket 20 may be made of aluminum alloy T6061 or austenitic stainless steel S31603, the inner container 10 may be made of resin materials (such as commercially available resin pipes, high-density polyethylene, nylon 6, and modified materials thereof) so as to facilitate molding and assembling of the inner container 10 and the end socket 20, and the auxiliary outer sleeve 30 may be made of aluminum alloy T6061 (a carbon fiber tape may also be wound to a preset thickness to form the auxiliary outer sleeve 30), so that, due to the great difference in young' S modulus between the inner container 10 made of resin and the end socket 20 made of aluminum alloy, a great difference in strain may occur at a joint between the inner container 10 and the end socket 20 under the action of internal gas, that is, that the inner container 10 may have a significant strain, if the fiber layer 50 is directly wound on the outer walls of the liner 10 and the end enclosure 20, the fiber layer 50 at the joint of the liner 10 and the end enclosure 20 will be damaged due to the deformation and the like, which seriously affects the safety of the high-pressure gas cylinder. In the present embodiment, since the young's modulus of the auxiliary outer sleeve 30 is greater than that of the inner container 10, the influence of a large strain caused by a low young's modulus of the inner container 10 can be effectively reduced, the problem of breakage of the fiber layer 50 can be avoided, and the safety performance of the high-pressure gas cylinder can be effectively improved. Meanwhile, for the pressure container, when the pressure container falls, the seal head 20 is most easily damaged, and the seal head 20 made of metal is adopted in the embodiment, so that the strength of the seal head 20 can be improved, and the possibility of damage is reduced.

As an alternative embodiment of this embodiment, referring to fig. 4 and 5, the fiber layer 50 includes a first fiber layer 51 and a second fiber layer 52, the first fiber layer 51 may be wound around and connected to the outer walls of the end socket 20 and the inner container 10, and may cover the auxiliary outer cover 30, and the second fiber layer 52 may be wound around and connected to the outer wall of the first fiber layer 51. By adopting the design of the double-layer fiber layer 50 from the inside to the outside, the strength of the high-pressure gas storage cylinder can be further improved, and the high-pressure gas storage cylinder can contain gas with higher pressure. In a specific application, the first fiber layer 51 and the second fiber layer 52 may be wrapped around the inner container 10 in a winding manner, and the winding manner of the first fiber layer 51 and the winding manner of the second fiber layer 52 may be different, but may also be the same.

Illustratively, the first fiber layer 51 may be wound circumferentially around the outer walls of the liner 10 and the end enclosure 20, and the second fiber layer 52 may be spirally wound around the outer peripheries of the liner 10 and the end enclosure 20, so that on one hand, the structural strength of the liner 10 is enhanced by the circumferential winding of the first fiber layer 51, and on the other hand, the liner 10 and the end enclosure 20 can be connected more tightly by the spiral winding of the second fiber layer 52, thereby effectively improving the connection strength between the liner 10 and the end enclosure 20. Of course, in other embodiments, the first fiber layer 51 and the second fiber layer 52 may be wound in other suitable manners, such as longitudinally (i.e. along the axial direction of the inner container 10).

Specifically, as an alternative embodiment of the present embodiment, the fiber layer 50 may be formed by winding at least one fiber material of carbon fibers, carbon nanotube fibers, or composite fibers composed of carbon fibers and carbon nanotube fibers. In a specific application, the first fiber layer 51 and the second fiber layer 52 may be formed by winding the same fiber material, or may be formed by winding different fiber materials, which is not limited in this embodiment.

The embodiment of the application provides a high-pressure gas bomb has following beneficial effect at least: compared with the prior art, the high-pressure gas storage bottle provided by the embodiment of the application forms a relatively closed inner cavity by sleeving the end socket 20 on the end part of the inner container 10, seals the joint of the inner container 10 and the end socket 20 by using the auxiliary outer sleeve 30 sleeved on the outer walls of the inner container 10 and the end socket 20 so as to improve the sealing performance of the end socket 20 and the inner container 10, and finally improves the integral structural strength of the high-pressure gas storage bottle by using the fiber layers 50 on the outer walls of the inner container 10 and the end socket 20. Meanwhile, under the action of the inner wall gas, a self-tightening effect can be formed between the end socket 20 and the liner 10 by means of the limiting effect of the fiber layer 50, and the sealing effect of the high-pressure gas storage bottle is further improved. So, just can utilize supplementary overcoat 30 and fibrous layer 50 to guarantee the sealing performance of high-pressure gas bomb, make the high-pressure gas bomb bear great pressure, the cup joint design of head 20 and inner bag 10 simultaneously can simplify the structural design of high-pressure gas bomb, and then reduce the shaping degree of difficulty and the manufacturing cost of high-pressure gas bomb, effectively solved the big and with high costs problem of the high-pressure gas bomb shaping degree of difficulty among the prior art, be favorable to the large-scale production of high-pressure gas bomb.

The above description is only a preferred embodiment of the present application and should not be taken as limiting the present application, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. A high pressure gas cylinder, comprising:

an inner container (10);

the end socket (20) is sleeved at the end part of the inner container (10);

the auxiliary outer sleeve (30) is sleeved on the outer walls of the inner container (10) and the end enclosure (20) and connected to the joint of the inner container (10) and the end enclosure (20);

and the fiber layer (50) is connected to the inner container (10) and the outer wall of the seal head (20) and covers the auxiliary outer sleeve (30).

2. The high-pressure gas cylinder as claimed in claim 1, characterized in that the closure (20) comprises a tube portion (23), a shoulder portion (22) and a closure connecting portion (21) which are connected in sequence, the tube portion (23) is used for gas to enter and exit the high-pressure gas cylinder, and the side wall of the closure connecting portion (21) is connected to the outer wall of the liner (10).

3. The high-pressure gas cylinder as claimed in claim 2, further comprising an auxiliary inner sleeve (40), wherein the auxiliary inner sleeve (40) is connected to the inner walls of the sealing head (20) and the inner container (10) and covers the joint of the sealing head (20) and the inner container (10).

4. The high-pressure gas cylinder as claimed in claim 3, characterized in that the auxiliary inner jacket (40) has a first end (401) and a second end (402) which are arranged opposite one another, the first end (401) extending in the direction of the tube section (23) and covering at least one half of the axial length of the inner wall of the shoulder section (22).

5. The high-pressure gas storage bottle as claimed in claim 3, characterized in that a limiting protrusion (41) is formed on one side of the auxiliary inner sleeve (40) close to the end socket (20), and one side of the limiting protrusion (41) abuts against the end face of the inner container (10) extending into the end socket (20).

6. The high-pressure gas cylinder as claimed in claim 2, characterized in that the liner (10) comprises a liner main body (11) and a liner connecting portion (12) connected to the liner main body (11), and the outer wall of the liner connecting portion (12) is connected to the inner wall of the end socket connecting portion (21).

7. The high-pressure gas cylinder as claimed in claim 6, characterized in that a connecting structure is formed between the liner connecting portion (12) and the closure connecting portion (21).

8. The high-pressure gas cylinder as claimed in claim 7, characterized in that the connecting structure comprises a wave surface structure (13) formed on the outer wall of the liner connecting portion (12) and the inner wall of the head connecting portion (21), and the outer wall of the liner connecting portion (12) and the inner wall of the head connecting portion (21) are attached to each other.

9. The high-pressure gas cylinder as claimed in one of claims 1 to 8, characterized in that the young's modulus of the auxiliary outer jacket (30) is greater than the young's modulus of the inner container (10) and/or the young's modulus of the closure head (20) is greater than the young's modulus of the inner container (10).

10. The high-pressure gas cylinder according to any one of claims 1 to 8, characterized in that the fiber layer (50) comprises a first fiber layer (51) and a second fiber layer (52), the first fiber layer (51) is connected to the outer walls of the head (20) and the liner (10) and covers the auxiliary outer jacket (30), and the second fiber layer (52) is connected to the outer wall of the first fiber layer (51).

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