Gas storage device

Abstract

According to the gas storage device provided by the utility model, the structure of the gas storage device is improved, so that the adaptability to gas storage devices with different volumes is increased, the production efficiency is improved, and the production cost is reduced. The gas storage device comprises a tank body, a guide pipe, a drying unit and an end cover covering the tank body, the end cover is provided with a gas inlet and a gas outlet, the drying unit is arranged in the end cover, in the axial direction of the tank body, an inlet of the guide pipe is formed in one side of the drying unit and is directly or indirectly communicated with the gas inlet, and an outlet of the guide pipe is formed in the other side of the drying unit. An outlet of the guide pipe is located on the other side of the drying unit, a communicating path is formed between the outlet of the guide pipe and the air outlet, and the drying unit is arranged on the communicating path. According to the gas storage device, the drying unit is arranged on one side of the end cover, so that the drying unit and the tank body are decoupled, the adaptability of the drying unit to tank bodies with different volumes is improved, the production efficiency is improved, and the production cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gas storage, in particular to a gas storage device. BACKGROUND

[0002] The gas storage device in the form of a gas storage tank can be applied to a closed air suspension system, which is installed between an air compressor and an air spring to store and dry air. In actual application, when the air supply in the air spring is insufficient, the air stored in the gas storage device can flow to the air spring to supplement the air spring; when the air stored in the gas storage device is insufficient, the air compressor can supplement the air storage device to ensure sufficient gas in the gas storage device.

[0003] However, the adaptability of the conventional gas storage device is low, mainly because the drying unit of the existing gas storage device needs to be made into different tooling to ensure the installation size of the drying unit in the gas storage device during assembly of the drying unit in the gas storage device with different volumes. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a gas storage device, which improves the adaptability of the drying unit to different volumes of the gas storage device, improves the production efficiency and reduces the production cost by improving the structure of the gas storage device.

[0005] To achieve the above-mentioned purpose, the utility model provides a gas storage device, which comprises a tank body, a conduit, a drying unit and an end cover arranged on the tank body, the end cover has an air inlet and an air outlet, the drying unit is arranged in the end cover, the inlet of the conduit is arranged on one side of the drying unit and directly or indirectly communicates with the air inlet, the outlet of the conduit is located on the other side of the drying unit and forms a communication path with the air outlet, and the drying unit is arranged on the communication path.

[0006] In the gas storage device of the present application, the drying unit is arranged on one side of the end cover, so that the drying unit is decoupled from the tank body, thereby improving the adaptability of the drying unit to different volumes of the tank body, improving the production efficiency and reducing the production cost.

[0007] Optionally, the drying unit comprises a plurality of air-permeable baffles, each air-permeable baffle is provided with a through hole in the middle, the conduit is inserted into the through hole and is interference-fitted with the through hole.

[0008] By arranging the air-permeable baffles, the space between the air-permeable baffles can be used to accommodate the drying particles and other devices, and the interference-fitting of the through hole and the conduit realizes the installation between the air-permeable baffles and the conduit.

[0009] Optionally, the gas-permeable barrier closest to the tank body in the axial direction is defined as a first gas-permeable barrier, and the gas-permeable barrier closest to the tank body in the axial direction is defined as a second gas-permeable barrier; the conduit is provided with a first stopper, and the first stopper and the first gas-permeable barrier form a stop in the axial direction; the end cover is provided with a second stopper, and the second stopper and the second gas-permeable barrier form a stop in the axial direction.

[0010] Therefore, the drying unit of the gas storage device in the application is stopped between the first stopper and the second stopper in the axial direction, and the first stopper is arranged on the conduit side, and the second stopper is arranged on the end cover side, so that the conduit and the end cover cooperate in the axial direction to limit the drying unit, so that the drying unit will not be loose even if the gas storage device is applied in an environment with a high vibration frequency, and the limiting reliability of the drying unit is high.

[0011] Optionally, the gas-permeable barrier comprises a barrier body extending in the radial direction, and a first flange extending in the axial direction is arranged in the middle of the barrier body, and the first flange surrounds the through hole.

[0012] By arranging the first flange, the first flange surrounds the through hole, and the first flange is in interference fit with the conduit, so that the connection area between the gas-permeable barrier and the conduit is increased, and the limiting reliability of the drying unit is further improved.

[0013] Optionally, the first stopper protrudes outward in the radial direction relative to the conduit, and the first stopper abuts against the part where the barrier body of the first gas-permeable barrier and the first flange meet in the axial direction. In this way, the assembly of the end cover and the drying unit is facilitated while ensuring the limiting reliability of the drying unit.

[0014] Optionally, the first stopper is an arc surface, and the part where the barrier body of the first gas-permeable barrier and the first flange meet is an arc surface. In this way, the first stopper and the first gas-permeable barrier can be prevented from being damaged in the process of vibration.

[0015] Optionally, the end cover has a barrel extending in the axial direction, and the barrel has a closed end and an open end; the open end of the barrel is inwardly retracted in the radial direction to form a necked section, and the necked section has an inner platform surface, and the inner platform surface serves as the second stopper. In this way, the necked section is formed in a stepped structure, and the inner platform surface protrudes radially outward relative to the inner wall of the barrel, so as to form the axial limiting with the second gas-permeable barrier as the second stopper.

[0016] Alternatively, the inner wall of the barrel is provided with a radially inwardly protruding protrusion, and the protrusion serves as the second stopper. Of course, the second stopper can also be formed by arranging the protrusion instead of changing the structure of the barrel as a whole to limit the drying unit in the axial direction.

[0017] Optionally, the second air permeable stopper further comprises a second flange arranged outside the stopper body, an end of the second flange extends towards the side close to the tank body in the axial direction and abuts against the second stopper in the axial direction. Thus, the second flange can increase the area of the air permeable stopper in contact with the inner wall of the end cover, thereby improving the axial limiting strength and sealing performance of the drying unit.

[0018] Optionally, the necked section is inserted into the tank body, and the necked section further has an outer abutment surface which abuts against the tank body in the axial direction. Thus, the insertion depth of the tank body into the end cover can be limited.

[0019] Alternatively, the tank body is inserted into the cylinder body and abuts against the convex point in the axial direction. Thus, the insertion depth of the tank body into the end cover can be limited, and the tank body with different radial sizes can be adapted.

[0020] Optionally, the closed end of the cylinder body is connected with a cover body, the cover body has an arc-shaped vault structure; the first air permeable stopper further comprises a second flange arranged outside the stopper body, and the part of the second flange in contact with the stopper body is limited in the axial direction and fitted to the part of the cylinder body in contact with the cover body. Thus, the part of the cylinder body in contact with the cover body can also limit the first air permeable stopper in the axial direction, thereby further improving the limiting stability of the drying unit.

[0021] Other features of the present specification, and the advantages thereof over existing prior art of the same or similar nature, will become apparent upon consideration of the following detailed description, with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0022] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present specification and, together with the description, serve to explain the principles of the present specification.

[0023] Figure 1 is a sectional view of an end cover of a gas storage device in an embodiment of the present application;

[0024] Figure 2 is a structural schematic view of a gas storage device in an embodiment of the present application;

[0025] Figure 3 is a structural schematic view of a gas storage device in an embodiment of the present application;

[0026] Figure 4 is a structural schematic view of a gas storage device in an embodiment of the present application, showing a communication path;

[0027] Figure 5 is a schematic view of an assembly process of a gas storage device in an embodiment of the present application;

[0028] Figure 6 is the structure schematic diagram of the gas inlet joint, the gas outlet joint and the pressure relief joint integrated after the gas storage device in the embodiment of the utility model;

[0029] Figure 7 is Figure 6 the sectional view.

[0030] Reference signs:

[0031] 1-conduit; 11-first stop; 2-tank body; 3-end cover; 31-cylinder body; 311-second stop; 311a-bump; 311b-necked section; 32-cover body; 321-pressure relief joint; 321a-pressure relief channel; 322-gas outlet joint; 322a-gas outlet channel; 323-gas inlet joint; 323a-gas inlet channel; 4-drying unit; 41-first air permeable stop; 42-second air permeable stop; 4a-first flange; 4b-second flange; 4c-stop body; 43-filter screen; 44-non-woven fabric; 45-drying particle. DETAILED DESCRIPTION

[0032] The utility model provides a kind of gas storage device, the adaptability of different volume gas storage device is increased by improving the structure of gas storage device, production efficiency is improved, and production cost is reduced.

[0033] In order to make the personnel in this technical field better understand the utility model scheme, the utility model is further explained in detail below with reference to the drawings and specific embodiments.

[0034] Relationship terms such as "first" and "second" are merely used to distinguish one component from another component with the same name, and do not necessarily require or imply any such actual relationship or order between the components.

[0035] Please refer to Figures 1 to 7 , as shown, Figure 1 is the sectional view of the end cover of the gas storage device in the embodiment of the utility model; Figure 2 is one of the structure schematic diagram of the gas storage device in the embodiment of the utility model; Figure 3 is the second structure schematic diagram of the gas storage device in the embodiment of the utility model; Figure 4 is the structure schematic diagram of the gas storage device in the embodiment of the utility model, showing the communication path; Figure 5 is the assembly process schematic diagram of the gas storage device in the embodiment of the utility model; Figure 6 is the structure schematic diagram of the gas inlet joint, the gas outlet joint and the pressure relief joint integrated after the gas storage device in the embodiment of the utility model; Figure 7 is the sectional view of Figure 6 .

[0036] As Figures 1 to 4As shown, the gas storage device in the present application includes a tank body 2, a conduit 1, a drying unit 4, and an end cover 3 arranged on the tank body 2. The tank body 2 is the main structure of the gas storage device, used to contain and store gas, and its shape and size can vary according to specific application requirements. The end cover 3 is arranged on one end or both ends of the tank body 2, has a gas inlet and a gas outlet, and is used for gas input and output, respectively. The gas inlet is connected with a gas inlet connector 323, which realizes the gas communication between the inside and outside of the end cover 3. The gas inlet connector 323 also integrates a pressure relief connector 321. The gas outlet is provided with a gas outlet connector 322. Of course, it can also be that Figure 6 and Figure 7 As shown, the gas inlet connector 323, the pressure relief connector 321, and the gas outlet connector 322 are integrated into a connector part, and the connector part is provided with a gas inlet channel 323a, a pressure relief channel 321a, and a gas outlet channel 322a which are isolated from each other. The gas inlet channel 323a and the gas outlet channel 322a are connected to the gas inlet and the gas outlet of the end cover 3. It can be understood that the end cover 3 is also provided with a pressure relief port which is connected to the pressure relief channel 321a.

[0037] In the axial direction of the tank body 2, the inlet of the conduit 1 is arranged on one side of the drying unit 4 and directly or indirectly connected to the gas inlet, and the outlet of the conduit 1 is located on the other side of the drying unit 4 and forms a communication path with the gas outlet. The drying unit 4 is arranged in the communication path. The drying unit 4 is arranged in the end cover 3.

[0038] In a specific example, the drying unit 4 has a lower side close to the tank body 2 and an upper side away from the tank body 2. Here, "upper" and "lower" are referred to the relative position of the tank body 2. The gas inlet and the gas outlet are both located on the upper side of the drying unit 4, i.e. the side of the end cover 3 away from the tank body 2. The drying unit 4 divides the gas storage device into an upper chamber and a lower chamber, and the upper side of the drying unit 4 is the upper chamber and the lower side is the lower chamber. The gas inlet and the gas outlet are both located in the upper chamber. One end of the conduit 1 is located in the upper chamber and connected to the gas inlet, and the other end passes through the drying unit 4 to the lower chamber, so that the gas can be introduced from the gas inlet to the lower chamber. The gas enters the lower chamber from the outlet of the conduit 1 and is discharged from the gas outlet through the communication path. The gas in the communication path passes through the lower chamber, the drying unit 4, the upper chamber, and the gas outlet in sequence.

[0039] In the gas storage device of the present application, the drying unit 4 is arranged on one side of the end cover 3, so that the drying unit 4 is decoupled from the tank body 2, thereby improving the adaptability of the drying unit 4 to different volumes of the tank body 2, improving the production efficiency, and reducing the production cost.

[0040] The specific connection mode of the drying unit 4 and the end cover 3 in the present application and the specific structure of the drying unit 4 will be described below.

[0041] The drying unit 4 comprises a plurality of air-permeable baffles, each of which is provided with a through hole in the middle part, and the conduit 1 is inserted into the through hole and is in interference fit with the through hole.

[0042] The space between the two adjacent air-permeable baffles in the axial direction is used to arrange a filter screen 43, a non-woven fabric 44, drying particles 45 and the like. By arranging the air-permeable baffles, the space between the air-permeable baffles can be used to accommodate the drying particles 45 and the like, and the interference fit between the through hole and the conduit 1 achieves the mounting between the air-permeable baffle and the conduit 1.

[0043] As an optional embodiment, the air-permeable baffle comprises a baffle body 4c extending in the radial direction, and the edge of the baffle body 4c is pressed against the inner wall of the end cover 3 in the radial direction. The middle part of the baffle body 4c is provided with a first flange 4a extending in the axial direction, and the first flange 4a surrounds the through hole. In the example shown in the figure, the first flange 4a extends downward from the side where the baffle body 4c is located, that is, toward the side close to the tank body 2. The first flange 4a is in contact with the outer wall of the conduit 1 and is pressed against it in the radial direction. The air-permeable baffle further comprises a second flange 4b arranged outside the baffle body 4c, which extends in the axial direction and is parallel to the first flange 4a, and toward the side close to the tank body 2. The second flange 4b is in contact with and pressed against the inner wall of the end cover 3 in the radial direction.

[0044] By arranging the first flange 4a, the first flange 4a surrounds the through hole, and the first flange 4a is in interference fit with the conduit 1, which increases the connection area between the air-permeable baffle and the conduit 1, and further improves the limiting reliability of the drying unit 4. By arranging the second flange 4b, the area of the air-permeable baffle in contact with the inner wall of the end cover 3 can be increased, thereby improving the axial limiting strength and sealing performance of the drying unit 4.

[0045] In a specific example, the drying unit 4 can be arranged with two air-permeable baffles as in the example shown in the figure, and of course a larger number of air-permeable baffles can also be arranged. The air-permeable baffle farthest away from the tank body 2 in the axial direction is defined as the first air-permeable baffle 41, and the air-permeable baffle closest to the tank body 2 is defined as the second air-permeable baffle 42.

[0046] The conduit 1 is provided with a first stop 11, and the first stop 11 forms a stop with the first air-permeable baffle 41 in the axial direction. The end cover 3 is provided with a second stop 311, and the second stop 311 forms a stop with the second air-permeable baffle 42 in the axial direction. The first stop 11 protrudes outward in the radial direction from the conduit 1, and the first stop 11 is in contact with the part where the baffle body 4c of the first air-permeable baffle 41 and the first flange 4a meet in the axial direction. The first stop 11 is arranged outside the first air-permeable baffle 41, and the first stop 11 is located on the side of the first air-permeable baffle 41 away from the second air-permeable baffle 42, and in the example shown in the figure, the first stop 11 is located on the upper side of the first air-permeable baffle 41.

[0047] Optionally, the first stop portion 11 is arc-shaped, and the portion of the stop body 4c of the first air permeable stop portion 41 that is connected to the first flange 4a is arc-shaped. In this way, the first stop portion 11 and the first air permeable stop portion 41 can be prevented from being damaged during vibration.

[0048] In this way, the drying unit 4 of the gas storage device is axially stopped between the first stop portion 11 and the second stop portion 311, and the first stop portion 11 is arranged on the side of the conduit 1, and the second stop portion 311 is arranged on the side of the end cover 3. In this way, the conduit 1 and the end cover 3 axially cooperate to limit the drying unit 4, so that the drying unit 4 will not loosen even if the gas storage device is used in an environment with a high vibration frequency, and the limiting reliability of the drying unit 4 is high.

[0049] In the example shown in the figure, the end cover 3 has a cylindrical body 31 extending in the axial direction, and the cylindrical body 31 has a closed end and an open end. The closed end of the cylindrical body 31 is connected to a cover body 32, and the cover body 32 is an arc-shaped dome structure. Specifically, the middle part of the cover body 32 is a flat surface parallel to the end of the tank body 2 and located on the surface in the radial direction of the tank body 2. The edge of the cover body 32 transitions to the end of the tank body 2 in an arc shape, and the cover body 32 is spaced apart from the end of the tank body 2 in the axial direction, and the radial dimension of the middle part of the cover body 32 is smaller than the radial dimension of the tank body 2, thereby forming an arc-shaped dome structure.

[0050] The first air permeable stop portion 41 also includes a second flange 4b arranged on the outside of the stop body 4c, and the portion of the second flange 4b connected to the stop body 4c is axially limited to the portion of the cylindrical body 31 connected to the cover body 32. In this way, the portion of the cover body 32 connected to the cylindrical body 31 can also axially limit the first air permeable stop portion 41, thereby further increasing the limiting stability of the drying unit 4.

[0051] The mounting method of the end cover 3 and the tank body 2 will be described below through two more detailed specific embodiments to further explain the technical solutions of the present application. It should be noted that the two embodiments are only used for illustration and are not intended to limit the scope of the technical solutions of the present application. Those skilled in the art can certainly combine the following two embodiments with the previous embodiments partially or integrally, and all the technical solutions derived after such combination fall within the protection scope of the present patent.

[0052] Embodiment One

[0053] As Figure 1 and Figure 2As shown, in this embodiment, the open end of the end cap 3 is inserted into the tank body 2. Specifically, the end cap 3 has an axially extending cylindrical body 31, which has a closed end and an open end. The open end portion of the cylindrical body 31 is radially recessed to form a necked section 311b, which has an inner platform surface that serves as a second stop 311. The inner platform surface protrudes from the inner wall of the cylindrical body 31 and can extend radially or be offset at a certain angle relative to the radial direction, as long as it can achieve circumferential positioning with the second vent baffle 42. The inner platform surface is located axially below the second vent baffle 42, that is, on the side of the second vent baffle 42 away from the first vent baffle 41. That is, on the side of the second flange 4b ​​of the second vent baffle 42 away from its baffle body 4c.

[0054] Thus, the necked section 311b is formed with a stepped structure, and its inner platform protrudes radially from the inner wall of the cylinder 31, thereby forming an axial limit between the second stop 311 and the second ventilator 42.

[0055] The necked section 311b is inserted into the tank body 2. The necked section 311b also has an outer platform, which forms an axial limit with the tank body 2. After the end cap 3 is inserted into the tank body 2, the joint between the end cap 3 and the tank body 2 can be welded. Thus, the insertion depth between the tank body 2 and the end cap 3 can be limited.

[0056] Example 2

[0057] like Figure 3 , Figure 4 and Figure 5 Figure 6 As shown, unlike Embodiment 1, in this embodiment, the tank 2 is inserted into the open end of the end cap 3. The inner wall of the cylinder 31 is provided with radially protruding protrusions 311a, which serve as the second stop portion 311. Of course, the second stop portion 311 can also be formed by providing protrusions 311a, rather than by changing the overall structure of the cylinder 31, to axially limit the drying unit 4.

[0058] The can body 2 is inserted into the cylinder 31 and abuts against the protrusion 311a along the axial direction. This allows for limiting the insertion depth of the can body 2 and the end cap 3, while also accommodating can bodies 2 with different radial dimensions.

[0059] The assembly method of the aforementioned gas storage device is described in detail below. The inlet connector 323 and the pressure relief connector 321 are welded together to integrate them. One end of the conduit 1 is press-fitted and fixed to the inlet connector 323. The inlet pipe is inserted into the end cover 3 through its inlet port, and the inlet connector 323 is welded to the end cover 3 to connect the inlet connector 323 to the inlet port, thereby achieving indirect connection between the conduit 1 and the inlet port of the end cover 3.

[0060] The first air permeable stopper 41 is inserted into the end cover 3 from the open end until the first flange 4a abuts against the first stopper 11, and the second flange 4b abuts against the cover 32 and the barrel 31 in the axial direction. The first air permeable stopper 41 is then sleeved on the outside of the conduit 1. The filter screen 43, the non-woven fabric 44, and the drying particles 45 are then inserted in sequence, and the non-woven fabric 44 and the filter screen 43 are then inserted in sequence. In this way, the non-woven fabric 44 and the filter screen 43 are arranged on both sides of the drying particles 45 in the axial direction, and the non-woven fabric 44 is arranged between the drying particles 45 and the filter screen 43.

[0061] The second air permeable stopper 42 is then inserted from the open end, and the second air permeable stopper 42 is sleeved on the outside of the conduit 1. At this time, the end of the second flange 4b of the second air permeable stopper 42 can be punched to form a protrusion 311a. Of course, if the end cover 3 is provided with a necked section 311b, the second air permeable stopper 42 is pressed into the end cover 3 until the second flange 4b of the second air permeable stopper 42 abuts against the inner platform in the axial direction.

[0062] Finally, the end cover 3 is inserted into the tank 2, or the tank 2 is inserted into the end cover 3, and the end cover 3 and the barrel are butt welded.

[0063] A specific air path system includes the aforementioned gas storage device, an air compressor, and an air spring. The air compressor is located upstream of the gas storage device, and the air spring is located downstream of the gas storage device. The air compressor, the gas storage device, and the air spring can be sequentially connected.

[0064] When the gas in the air spring is insufficient, the gas storage device can supply gas to the air spring to supplement the air spring. When the gas in the gas storage device is insufficient, the air compressor can be started to supplement the gas in the gas storage device, so as to maintain the amount of gas in the gas storage device.

[0065] The core function of the gas storage device is to buffer the gas and dry the gas to ensure the dryness of the gas supplied to the air spring.

[0066] It should be understood that the air path system in actual application is not limited to the above description, that is, the gas storage device can not only be used in cooperation with the above-mentioned air compressor and air spring. In specific practice, those skilled in the art can also adjust the types of upstream and downstream devices of the gas storage device according to the actual application scene. For example, in the chemical industry, the air spring can be replaced by a reaction tank.

[0067] The principle and implementation mode of the present application are described by using specific examples in the present application, and the above examples are only used for helping to understand the core idea of the present application. It should be pointed out that, for ordinary skilled persons in the technical field, some improvements and modifications can be made to the present application without departing from the principle of the present application, and these improvements and modifications also fall within the protection scope of the present application.

Claims

1. A gas storage device, characterized by, The application relates to a drying device for a canister, which comprises a canister body (2), a guide pipe (1), a drying unit (4) and an end cover (3) arranged on the canister body (2), wherein the end cover (3) is provided with an air inlet and an air outlet, the drying unit (4) is arranged in the end cover (3), the inlet of the guide pipe (1) is arranged on one side of the drying unit (4) and directly or indirectly communicates with the air inlet, the outlet of the guide pipe (1) is arranged on the other side of the drying unit (4) and forms a communication path with the air outlet, and the drying unit (4) is arranged on the communication path.

2. The gas storage device of claim 1, wherein, The drying unit (4) comprises a plurality of air-permeable blocking parts, and a through hole is formed in the middle part of each air-permeable blocking part, the guide pipe (1) is inserted into the through hole and is in interference fit with the through hole.

3. The gas storage device of claim 2, wherein, The air-permeable blocking part farthest from the canister body (2) in the axial direction is defined as a first air-permeable blocking part (41), and the air-permeable blocking part closest to the canister body (2) is defined as a second air-permeable blocking part (42). The guide pipe (1) is provided with a first stop part (11), and the first stop part (11) forms a stop in the axial direction with the first air-permeable blocking part (41). The end cover (3) is provided with a second stop part (311), and the second stop part (311) forms a stop in the axial direction with the second air-permeable blocking part (42).

4. The gas storage device of claim 3, wherein, The air-permeable blocking part comprises a blocking part body (4c) extending in the radial direction, and a first flange (4a) extending in the axial direction is arranged in the middle part of the blocking part body (4c), and the first flange (4a) surrounds the through hole.

5. The gas storage device of claim 4, wherein, The first stop part (11) protrudes outward in the radial direction of the guide pipe (1). The first stop part (11) abuts against the part, where the blocking part body (4c) of the first air-permeable blocking part (41) meets the first flange (4a), in the axial direction.

6. The gas storage device of claim 4, wherein, The first stop part (11) is an arc surface, and the part, where the blocking part body (4c) of the first air-permeable blocking part (41) meets the first flange (4a), is an arc surface.

7. The gas storage device of claim 4, wherein, The end cover (3) has a cylinder body (31) extending in the axial direction, and the cylinder body (31) has a closed end and an open end. The open end part of the cylinder body (31) is inwardly retracted in the radial direction to form a necked section (311b), and the necked section (311b) has an inner platform surface, and the inner platform surface serves as the second stop part (311); or An inner wall of the cylinder body (31) is provided with a convex point (311a) protruding inward in the radial direction, and the convex point (311a) serves as the second stop part (311).

8. The gas storage device of claim 7, wherein, The second air-permeable blocking part (42) further comprises a second flange (4b) arranged outside the blocking part body (4c), and the end part of the second flange (4b) extends in the axial direction towards the side close to the canister body (2) and abuts against the second stop part (311) in the axial direction.

9. The gas storage device of claim 7, wherein, The necked section (311b) is inserted into the canister body (2), and the necked section (311b) further has an outer platform surface, and the outer platform surface forms a limit in the axial direction with the canister body (2); or the canister body (2) is inserted into the cylinder body (31) and abuts against the convex point (311a) in the axial direction.

10. The gas storage device of claim 7, wherein, The closed end of the barrel (31) is connected with a cover (32), the cover (32) is arc-shaped vault structure; the first air permeable baffle (41) also includes a second flange (4b) arranged outside the baffle body (4c), the part of the second flange (4b) and the baffle body (4c) is axially limited and matched with the part of the barrel (31) and the cover (32).

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