Cylinder valve protection device and gas storage cylinder

Abstract

The utility model provides a cylinder valve protection device and a gas storage cylinder. The cylinder valve protection device comprises a first end cover and a second end cover, the second end cover is buckled with the first end cover to form a mounting cavity and a penetrating hole, the mounting cavity is communicated with the penetrating hole, the mounting cavity is used for mounting a bottle valve, the penetrating hole is used for allowing a bottle neck of an air bottle to penetrate through, at least one of the first end cover and the second end cover is provided with a connector, and the connector is communicated with the mounting cavity. By means of the scheme, the problem that in the prior art, a cylinder valve can be damaged in a gas cylinder falling experiment or vehicle collision, and consequently hydrogen leakage is caused can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas storage bottles, in particular to a bottle valve protection device and a gas storage bottle. Background Art

[0002] Hydrogen storage cylinders currently mainly use seamless aluminum liners, but they are heavy. In order to reduce the weight of the product, a fully wrapped gas cylinder with a plastic liners can be used, which has excellent properties such as light weight, high strength, and corrosion resistance.

[0003] For fully wrapped gas cylinders with plastic liner, both ends of the gas cylinder are equipped with protective covers, which can well protect the gas cylinder in horizontal and 45° drop tests, and can also protect the gas cylinder body in the impact of vehicle collision. However, the protective cover cannot protect the gas cylinder valve, which will still be damaged in the drop test and vehicle collision, which may cause hydrogen leakage. Utility Model Content

[0004] The utility model provides a bottle valve protection device and a gas storage bottle, so as to solve the problem in the prior art that the bottle valve may be damaged in a drop test of the gas bottle or a vehicle collision, resulting in hydrogen leakage.

[0005] According to one aspect of the utility model, a bottle valve protection device is provided, which includes: a first end cover; a second end cover, which is snap-fitted with the first end cover to form an installation cavity and a penetration hole, the installation cavity and the penetration hole are connected, the installation cavity is used to install the bottle valve, and the penetration hole is used to penetrate the bottleneck of the gas bottle, and at least one of the first end cover and the second end cover is provided with an interface, which is connected to the installation cavity.

[0006] Further, the first end cover includes a first end plate and a first enclosure portion, the first enclosure portion is arranged on one side of the first end plate and extends along the circumference of the first end plate, and a first notch is arranged on one side of the first end plate; the second end cover includes a second end plate and a second enclosure portion, the second enclosure portion is arranged on one side of the second end plate and extends along the circumference of the second end plate, and a second notch is arranged on one side of the second end plate, the first notch and the second notch cooperate to form a through hole, and the first enclosure portion and the second enclosure portion form an annular enclosure portion.

[0007] Furthermore, the first end cover and the second end cover are detachably connected.

[0008] Furthermore, the bottle valve protection device further includes: a fastening portion, which is arranged between the first end cover and the second end cover, and the first end cover and the second end cover are connected by the fastening portion.

[0009] Further, the fastening portion is disposed between the first end plate and the second end plate.

[0010] Furthermore, a limiting structure is provided on the side wall of the penetration hole, and the limiting structure is used to limit the relative position between the cylinder valve protection device and the bottleneck of the gas cylinder.

[0011] Furthermore, the bottle valve protection device also includes: a positioning structure, which is arranged between the first end cover and the second end cover, and the positioning structure is used to limit the relative position of the first end cover and the second end cover along the vertical direction from the first end cover to the second end cover.

[0012] Furthermore, the positioning structure includes: a first step structure, which is arranged on the first end cover; a second step structure, which is arranged on the second end cover, and the first end cover and the second end cover are positioned and matched by the first step structure and the second step structure.

[0013] Furthermore, one end of the installation cavity away from the penetration hole is open, and the bottle valve protection device also includes: a cover plate, which is arranged at one end of the installation cavity away from the penetration hole, and the cover plate is respectively connected to the first end cover and the second end cover.

[0014] Furthermore, the installation cavity includes a first cavity, a transition cavity and a second cavity which are connected in sequence. The cross-sectional area of ​​the first cavity is smaller than the cross-sectional area of ​​the second cavity. The cross-sectional area of ​​the transition cavity gradually increases from the first cavity to the second cavity, and the through hole is connected to the second cavity.

[0015] According to another aspect of the utility model, a gas storage cylinder is provided, which includes: a gas cylinder body, including a bottleneck; a bottle valve body, arranged on the bottleneck, and the bottle valve body has a connecting hole; the above-mentioned bottle valve protection device, the bottleneck is penetrated in the penetration hole of the bottle valve protection device, the bottle valve body is installed in the installation cavity of the bottle valve protection device, and the interface of the bottle valve device is arranged corresponding to the connecting hole.

[0016] By applying the technical solution of the utility model, the first end cover and the second end cover cooperate to form an installation cavity and a penetration hole, and the installation cavity and the penetration hole are connected. Such a setting can make it possible for the bottleneck of the gas cylinder installed with a bottle valve to be penetrated in the penetration hole, and the bottle valve is located in the installation cavity, so that the bottle valve protection device can protect the bottle valve, reduce or avoid the possibility of damaging the bottle valve in a drop test and a vehicle collision, and reduce or avoid the risk of hydrogen leakage. Specifically, during assembly, the bottle valve can be installed on the bottleneck of the gas cylinder, and then the first end cover and the second end cover are surrounded by the outer periphery of the bottle valve, so that the bottleneck is penetrated in the penetration hole formed by the first end cover and the second end cover. The setting of this scheme has a simple structure and is easy to operate, and at least one of the first end cover and the second end cover is provided with an interface, and the interface is arranged corresponding to the connecting hole of the bottle valve. Such a setting can facilitate the assembly of the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0018] Figure 1 A schematic diagram of an exploded structure of a first end cover and a second end cover provided by an embodiment of the utility model from one viewing angle is shown;

[0019] Figure 2 A schematic structural diagram of one viewing angle after the first end cover and the second end cover provided by an embodiment of the utility model are buckled together is shown;

[0020] Figure 3 A schematic structural diagram of another viewing angle after the first end cover and the second end cover provided by an embodiment of the utility model are buckled together is shown;

[0021] Figure 4 A structural schematic diagram of a bottle valve protection device provided by an embodiment of the utility model from one viewing angle is shown;

[0022] Figure 5 A schematic diagram of an exploded structure of the first end cover and the second end cover provided by an embodiment of the utility model from another perspective is shown;

[0023] Figure 6 A structural schematic diagram of the bottle valve protection device provided by an embodiment of the utility model is shown from another perspective.

[0024] The above drawings include the following reference numerals:

[0025] 10. A first end cover;

[0026] 11. first end plate; 1101. first notch;

[0027] 12. first enclosure portion; 121. first convex edge;

[0028] 20. Second end cover;

[0029] 21. second end plate; 2101. second notch;

[0030] 22. Second enclosure portion; 221. Second convex edge;

[0031] 30. Fastening part;

[0032] 40. Positioning structure; 41. First step structure; 42. Second step structure;

[0033] 50. Cover plate;

[0034] 01. Installation cavity;

[0035] 011, first chamber; 012, transition chamber; 013, second chamber;

[0036] 02. Drill holes;

[0037] 03. Interface. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] like Figures 1 to 3 As shown, the embodiment of the utility model provides a bottle valve protection device, which includes a first end cap 10 and a second end cap 20. The second end cap 20 is buckled with the first end cap 10 to form an installation cavity 01 and a penetration hole 02, the installation cavity 01 and the penetration hole 02 are connected, the installation cavity 01 is used to install the bottle valve, and the penetration hole 02 is used to penetrate the bottleneck of the gas bottle, and at least one of the first end cap 10 and the second end cap 20 is provided with an interface 03, which is connected with the installation cavity 01.

[0040] By applying the technical solution of the utility model, the first end cap 10 and the second end cap 20 cooperate to form the installation cavity 01 and the penetration hole 02, and the installation cavity 01 and the penetration hole 02 are connected. Such a setting can make it possible for the bottleneck of the gas cylinder with a bottle valve installed to be penetrated in the penetration hole 02, and the bottle valve is located in the installation cavity 01, so that the bottle valve protection device can protect the bottle valve, reduce or avoid the possibility of damaging the bottle valve in the drop test and vehicle collision, and reduce or avoid the risk of hydrogen leakage. Specifically, during assembly, the bottle valve can be installed on the bottleneck of the gas cylinder, and then the first end cap 10 and the second end cap 20 are surrounded by the outer periphery of the bottle valve, so that the bottleneck is penetrated in the penetration hole 02 formed by the first end cap 10 and the second end cap 20. The setting of this solution has a simple structure and is easy to operate, and at least one of the first end cap 10 and the second end cap 20 is provided with an interface 03, and the interface 03 is arranged corresponding to the communication hole of the bottle valve. Such a setting can facilitate the assembly of the pipeline.

[0041] In the embodiment of the present scheme, the first end cover 10 includes a first end plate 11 and a first enclosure 12, the first enclosure 12 is arranged on one side of the first end plate 11 and extends along the circumference of the first end plate 11, and a first notch 1101 is arranged on one side of the first end plate 11. The second end cover 20 includes a second end plate 21 and a second enclosure 22, the second enclosure 22 is arranged on one side of the second end plate 21 and extends along the circumference of the second end plate 21, and a second notch 2101 is arranged on one side of the second end plate 21, the first notch 1101 and the second notch 2101 cooperate to form a through hole 02, and the first enclosure 12 and the second enclosure 22 form an annular enclosure. That is, in this embodiment, the first enclosure portion 12 has two first ends arranged opposite to each other along the circumference of the first end plate 11, and the first notch 1101 is located between the two first ends; the second enclosure portion 22 has two second ends arranged opposite to each other along the circumference of the second end plate 21, and the second notch 2101 is located between the two second ends; the first notch 1101 and the second notch 2101 are arranged opposite to each other, and the two first ends of the first enclosure portion 12 are respectively close to and connected to the two first ends of the second enclosure portion 22.

[0042] In the embodiment of this scheme, a plurality of interfaces 03 are provided, some of which are provided on the first enclosure portion 12 , and some of which are provided on the second enclosure portion 22 . Some of the interfaces 03 are formed by snapping the first enclosure portion 12 and the second enclosure portion 22 .

[0043] This solution does not limit the shape of the interface 03. The interface 03 can be set as a circular hole, a polygonal hole, or a special-shaped hole.

[0044] Further, the installation cavity 01 includes a first cavity 011, a transition cavity 012, and a second cavity 013 which are connected in sequence, the cross-sectional area of ​​the first cavity 011 is smaller than the cross-sectional area of ​​the second cavity 013, and the cross-sectional area of ​​the transition cavity 012 gradually increases along the direction from the first cavity 011 to the second cavity 013, and the through hole 02 is connected to the second cavity 013. Some bottle valves usually include multiple integrated parts, and the arrangement of this solution can make the bottle valve protection device adapt to the contour of the bottle valve, thereby improving the adaptability of this solution to the bottle valve.

[0045] In this solution, the first end cover 10 and the second end cover 20 are detachably connected. This arrangement can facilitate the assembly and disassembly of the first end cover 10 and the second end cover 20.

[0046] This solution does not limit the connection method between the first end cover 10 and the second end cover 20.

[0047] In some embodiments of the present solution, the first end cover 10 and the second end cover 20 are connected by snapping or plugging.

[0048] like Figure 1 and Figure 4 As shown, in the embodiment of the present solution, the bottle valve protection device further includes a fastening portion 30, which is disposed between the first end cap 10 and the second end cap 20, and the first end cap 10 and the second end cap 20 are connected via the fastening portion 30. The fastening portion 30 is simple in structure and has strong convenience in operation.

[0049] Specifically, the fastening portion 30 is disposed between the first end plate 11 and the second end plate 21. Such an arrangement can further improve the convenience of connecting the first end cover 10 and the second end cover 20.

[0050] In some embodiments of the present solution, the fastening portion 30 is disposed in the mounting cavity 01 .

[0051] In the embodiment of this solution, the fastening part 30 is arranged between the outer surface of the first end plate 11 and the outer surface of the second end plate 21. Such arrangement can improve the convenience of assembly and avoid the possibility of interference between the fastening part 30 and the bottle valve.

[0052] Specifically, a first protrusion is provided on the outer surface of the first end plate 11, and a first threaded hole is provided on the first protrusion; a second protrusion is provided on the outer surface of the second end plate 21, and a second threaded hole is provided on the second protrusion; the first threaded hole and the second threaded hole are coaxial, and at least one of the first threaded hole and the second threaded hole is a through hole; the fastening portion 30 is a fastening bolt, and the fastening bolt is threadedly connected to the first threaded hole and the second threaded hole, respectively.

[0053] This solution does not limit the specific number of the fastening parts 30 .

[0054] In the embodiment of the present solution, a plurality of fastening parts 30 are provided, and the plurality of fastening parts 30 are distributed at intervals along the distribution direction of the two first ends of the first end plate 11 .

[0055] Furthermore, a limiting structure is provided on the side wall of the through hole 02, and the limiting structure is used to limit the relative position between the bottle valve protection device and the bottleneck of the gas cylinder. Such a setting can prevent the bottle valve protection device and the bottleneck from rotating relative to each other in the circumferential direction, thereby improving the stability of the bottle valve protection device.

[0056] In the embodiment of the present scheme, the through hole 02 is a polygonal hole structure. When assembled with the gas cylinder, the bottleneck of the gas cylinder is kept in the same shape as the through hole 02. Such an arrangement allows the bottle valve protection device and the bottleneck to limit each other, and its structure is simple and easy to process. Moreover, after the first end cap 10 and the second end cap 20 are fixed by the fastening part 30, the through hole 02 can be interference-fitted with the bottleneck to limit the position of the bottle valve protection device relative to the bottleneck in the axial direction, thereby improving the stability of the bottle valve protection device.

[0057] Furthermore, the bottle valve protection device further includes a positioning structure 40, which is disposed between the first end cap 10 and the second end cap 20, and is used to limit the relative position of the first end cap 10 and the second end cap 20 along the vertical direction from the first end cap 10 to the second end cap 20. The provision of the positioning structure 40 can improve the stability of the connection between the first end cap 10 and the second end cap 20, and improve the buckling accuracy of the first end cap 10 and the second end cap 20, and reduce the possibility of misalignment of the first end cap 10 and the second end cap 20.

[0058] like Figure 5 As shown, in the embodiment of the present solution, the positioning structure 40 includes a first step structure 41 and a second step structure 42. The first step structure 41 is arranged on the first end cover 10; the second step structure 42 is arranged on the second end cover 20, and the first end cover 10 and the second end cover 20 are positioned and matched by the first step structure 41 and the second step structure 42. The arrangement of the first step structure 41 and the second step structure 42 is simple in structure and easy to achieve positioning.

[0059] Specifically, the first step structure 41 is arranged on one side of the first end plate 11 facing the second end plate 21, and two groups of the first step structures 41 are arranged, and the two groups of first step structures 41 are respectively located on both sides of the first notch 1101. The first step structure 41 includes a first concave portion and a first convex portion arranged at intervals along the distribution direction of the two first ends of the first end plate 11.

[0060] The second step structure 42 is arranged on one side of the second end plate 21 facing the first end plate 11, and two groups of the second step structures 42 are arranged, and the two groups of second step structures 42 are respectively located on both sides of the second notch 2101. The second step structure 42 includes a second convex portion and a second concave portion arranged at intervals along the distribution direction of the two second ends of the second end plate 21, and the second convex portion and the first concave portion are arranged correspondingly, and the second concave portion and the first convex portion are arranged correspondingly.

[0061] like Figure 2 and Figure 6 As shown, further, one end of the installation cavity 01 away from the penetration hole 02 is open, and the bottle valve protection device also includes a cover plate 50, which is arranged at one end of the installation cavity 01 away from the penetration hole 02, and the cover plate 50 is connected to the first end cover 10 and the second end cover 20 respectively. The provision of the cover plate 50 can further enhance the protection effect of the device on the bottle valve. In the embodiment of the present scheme, the cover plate 50 is a mesh plate. After the cover plate 50 is covered, the bottle valve is located in the installation cavity 01, and the first end plate 11, the second end plate 21 and the cover plate 50 cooperate and limit the bottle valve in the axial direction of the bottleneck.

[0062] This solution does not limit the connection method between the cover plate 50 and the first end cover 10 and the second end cover 20 respectively.

[0063] In some embodiments of the present solution, the cover plate 50 is respectively engaged with the first end cover 10 and the second end cover 20 .

[0064] In the embodiment of the present scheme, a first convex edge 121 is provided on the outer edge of the end surface of the first enclosure portion 12 away from the first end plate 11, and the first convex edge 121 extends along the extension direction of the first enclosure portion 12; a second convex edge 221 is provided on the outer edge of the end surface of the second enclosure portion 22 away from the second end plate 21, and the second convex edge 221 extends along the extension direction of the second enclosure portion 22. After the first end cover 10 and the second end cover 20 are buckled, the first convex edge 121 and the second convex edge 221 form an annular convex edge, and after the cover plate 50 is covered to the opening of the installation cavity 01, the cover plate 50 abuts against the end surfaces of the first enclosure portion 12 and the second enclosure portion 22 and is located inside the annular convex edge, and the annular convex edge has the same shape as the contour of the cover plate 50, and is positioned and matched with the cover plate 50.

[0065] The bottle valve protection device further includes a fastener, and a plurality of fasteners are provided. The first enclosure portion 12 and the second enclosure portion 22 are respectively connected to the cover plate 50 through the fasteners.

[0066] The utility model also provides a gas storage cylinder, which includes a gas cylinder body, a bottle valve body and the above-mentioned bottle valve protection device. The gas cylinder body includes a bottleneck; the bottle valve body is arranged on the bottleneck, and the bottle valve body has a connecting hole; the bottleneck is penetrated in the penetration hole 02 of the bottle valve protection device, the bottle valve body is installed in the installation cavity 01 of the bottle valve protection device, and the interface 03 of the bottle valve device is arranged corresponding to the connecting hole.

[0067] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0068] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being only exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0069] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0070] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways, and the spatially relative descriptions used here are interpreted accordingly.

[0071] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only to facilitate the distinction between corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0072] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A bottle valve protection device, characterized in that: The bottle valve protection device comprises: A first end cap (10); The second end cover (20) is snap-fitted with the first end cover (10) to form a mounting cavity (01) and a penetration hole (02); the mounting cavity (01) and the penetration hole (02) are in communication; the mounting cavity (01) is used to mount a bottle valve; the penetration hole (02) is used to penetrate the bottleneck of a gas bottle; at least one of the first end cover (10) and the second end cover (20) is provided with an interface (03); the interface (03) is in communication with the mounting cavity (01).

2. The bottle valve protection device according to claim 1, characterized in that: The first end cover (10) comprises a first end plate (11) and a first enclosure portion (12), wherein the first enclosure portion (12) is arranged on one side of the first end plate (11) and extends along the circumference of the first end plate (11), and a first notch (1101) is arranged on one side of the first end plate (11); The second end cover (20) comprises a second end plate (21) and a second enclosure portion (22), wherein the second enclosure portion (22) is arranged on one side of the second end plate (21) and extends along the circumference of the second end plate (21), and a second notch (2101) is arranged on one side of the second end plate (21), wherein the first notch (1101) and the second notch (2101) cooperate to form the through hole (02), and the first enclosure portion (12) and the second enclosure portion (22) form an annular enclosure portion.

3. The bottle valve protection device according to claim 2, characterized in that: The first end cover (10) and the second end cover (20) are detachably connected.

4. The bottle valve protection device according to claim 3, characterized in that: The bottle valve protection device also includes: A fastening portion (30) is arranged between the first end cover (10) and the second end cover (20); the first end cover (10) and the second end cover (20) are connected via the fastening portion (30).

5. The bottle valve protection device according to claim 4, characterized in that: The fastening portion (30) is disposed between the first end plate (11) and the second end plate (21).

6. The bottle valve protection device according to claim 1, characterized in that: A limiting structure is arranged on the side wall of the penetration hole (02), and the limiting structure is used to limit the relative position between the bottle valve protection device and the bottleneck of the gas bottle.

7. The bottle valve protection device according to claim 1, characterized in that: The bottle valve protection device also includes: A positioning structure (40) is arranged between the first end cover (10) and the second end cover (20), and the positioning structure (40) is used to limit the relative position of the first end cover (10) and the second end cover (20) along the vertical direction from the first end cover (10) to the second end cover (20).

8. The bottle valve protection device according to claim 7, characterized in that: The positioning structure (40) comprises: A first stepped structure (41) is arranged on the first end cover (10); The second step structure (42) is arranged on the second end cover (20), and the first end cover (10) and the second end cover (20) are positioned and matched through the first step structure (41) and the second step structure (42).

9. The bottle valve protection device according to claim 1, characterized in that: One end of the installation cavity (01) away from the penetration hole (02) is open, and the bottle valve protection device further comprises: A cover plate (50) is arranged at one end of the installation cavity (01) away from the penetration hole (02), and the cover plate (50) is respectively connected to the first end cover (10) and the second end cover (20).

10. The bottle valve protection device according to claim 1, characterized in that: The installation cavity (01) comprises a first cavity (011), a transition cavity (012) and a second cavity (013) which are connected in sequence, the cross-sectional area of ​​the first cavity (011) is smaller than the cross-sectional area of ​​the second cavity (013), and the cross-sectional area of ​​the transition cavity (012) gradually increases along the direction from the first cavity (011) to the second cavity (013), and the through hole (02) is connected to the second cavity (013).

11. A gas storage cylinder, characterized in that: include: The cylinder body, including the neck; A bottle valve body, arranged on the bottle neck, and having a communication hole; The bottle valve protection device according to any one of claims 1 to 10, wherein the bottleneck is penetrated in the penetration hole (02) of the bottle valve protection device, the bottle valve body is installed in the installation cavity (01) of the bottle valve protection device, and the interface (03) of the bottle valve protection device is arranged corresponding to the connecting hole.

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