Bottle mouth valve and gas reservoir

Abstract

The utility model provides a kind of bottle mouth valve, bottle mouth valve includes: valve body, valve body is recessed inward and is formed with accommodating groove along axial one end, and the other end of valve body is opened with air hole along axial penetration;Plug, plug is accommodated in accommodating groove from one end of valve body, and air supply passage is opened with along radial penetration in plug, and filter space is formed in the middle of plug, and air supply passage passes filter space along axial penetration, and one end of plug is provided with the resistance portion that protrudes into air supply passage along radial, and air supply passage penetrates resistance portion along axial;Filter screen, filter screen is arranged in filter space;Retainer, retainer is arranged in filter space, and the one end of retainer along axial is in contact with filter screen, and the other end is in contact with resistance portion.The bottle mouth valve and gas storage tank of the utility model, by setting retainer to carry out axial location to filter screen, fundamentally eliminate the risk of axial displacement of filter screen under high pressure and large flow, ensure that filtering function is always effective.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a bottle neck valve and a gas storage tank. Background Technology

[0002] With the development of the world economy, energy and environmental issues are becoming a focus of attention for all countries and are gradually becoming a hot topic in the field of power system technology research. Fuel cell technology, as a clean and efficient power device, generates electricity through the chemical reaction of hydrogen and oxygen, which can be used in various fields of production and life. Its only byproduct is water, making it a clean technology.

[0003] When the fuel cell system of an electric two-wheeler uses solid-state hydrogen storage technology, the cylinder valve integrates components such as a check valve, safety valve, pressure reducing valve, manual valve, and filter to control the sealing, flow, pressure reduction, and filtration of hydrogen fuel. Currently, effectively filtering the solid materials used to store hydrogen to prevent it from entering the cylinder valve and compromising its function is a pressing problem that needs to be solved.

[0004] The existing structure uses an elastic element to press the filter screen. When the air supply is high, the reaction force generated by the medium on the filter screen may exceed the preload of the elastic element, causing the filter screen to shift axially and fail. Solid materials may then enter the bottle valve and damage its function.

[0005] In view of this, it is necessary to improve the existing bottle valve to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a bottle neck valve to solve the problem that the filter screen of existing bottle neck valves is prone to axial displacement under high flow pressure, which can damage the function of the bottle neck valve.

[0007] To achieve the above objectives, this utility model provides a bottle neck valve, which is used to open and close a gas storage tank and filter the flowing gas. The bottle neck valve includes: The valve body has a receiving groove recessed inward at one end along the axial direction, and an air hole is opened through the other end along the axial direction. A stopcock is received in the receiving groove from one end of the valve body. The stopcock has a radially penetrating air supply channel. A filter space is formed in the middle of the stopcock. The air supply channel passes through the filter space axially. One end of the stopcock is provided with a stop portion that protrudes radially into the air supply channel. The air supply channel passes through the stop portion axially. A filter screen, wherein the filter screen is disposed within the filtration space; A baffle ring is disposed within the filter space, with one end of the baffle ring abutting against the filter screen along the axial direction and the other end abutting against the blocking part. The baffle ring has a through hole in the middle for air to pass through.

[0008] As a further improvement of this utility model, the valve has a partition extending radially into the air supply channel in the middle, the air supply channel passes through the partition axially, and the filter is located between the retaining ring and the partition.

[0009] As a further improvement of this utility model, the bottle valve also includes an elastic element, which is disposed in the filtration space and abuts against the partition and the filter screen in the axial direction.

[0010] As a further improvement of this utility model, the partition divides the air supply channel into an air outlet channel close to the air hole and an air inlet channel away from the air hole, and the filter space is arranged in the air outlet channel.

[0011] As a further improvement of this utility model, an opening structure is formed on the blocking part, and the opening structure is in the shape of a trumpet that gradually increases in size towards the air hole.

[0012] As a further improvement of this utility model, the retaining ring is broken circumferentially to form a notch.

[0013] As a further improvement of this utility model, the valve body has a stop portion formed by radially protruding outward at one end with an air hole.

[0014] As a further improvement of this utility model, the stop part of the plug is made of a hard material.

[0015] As a further improvement of this utility model, the valve body is provided with a limiting part protruding radially into the receiving groove, the plug abuts against the limiting part axially, and the plug is spaced apart from the air hole axially.

[0016] This utility model also provides a gas storage tank, which includes a tank body with a tank opening and the aforementioned bottle opening valve, the bottle opening valve being used to open and close the tank opening.

[0017] The beneficial effects of this utility model are: the bottle valve and gas tank of this utility model, by setting a retaining ring to axially limit the filter screen, fundamentally eliminate the risk of axial displacement of the filter screen under high pressure and high flow, and ensure that the filtration function is always effective. Attached Figure Description

[0018] Figure 1 This is a cross-sectional structural diagram of the bottle valve of this utility model; Figure 2This is a three-dimensional structural diagram of the retaining ring of the bottle neck valve of this utility model. Detailed Implementation

[0019] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0022] like Figure 1 and Figure 2 As shown, the bottle valve 100 of this utility model is used to open and close the gas storage tank and filter the gas flowing through it.

[0023] The gas storage tank includes a tank body with a can opening and a valve 100 for opening and closing the can opening. In this embodiment, the gas storage tank can store hydrogen, but is not limited to this.

[0024] The bottle neck valve 100 includes a valve body 1, a stopcock 2, a filter screen 3, and a retaining ring 4.

[0025] The valve body 1 is recessed inward at one end along the axial direction to form a receiving groove 11, and the other end of the valve body 1 is provided with an air hole 12 through the axial direction.

[0026] The valve plug 2 is housed in the receiving groove 11 from one end of the valve body 1. The valve plug 2 has a radially penetrating air supply channel 21. A filter space 22 is formed in the middle of the valve plug 2. The air supply channel 21 passes through the filter space 22 axially. One end of the valve plug 2 is provided with a stop part 23 that protrudes radially into the air supply channel 21. The air supply channel 21 passes through the stop part 23 axially.

[0027] Filter 3 is installed in the filtration space 22 and is used to filter solid materials.

[0028] The baffle ring 4 is set in the filter space 22, and one end of the baffle ring 4 abuts against the filter screen 3 along the axial direction, and the other end abuts against the blocking part 23. The baffle ring 4 has a through hole 41 in the middle for air to pass through.

[0029] In this embodiment, the filter screen 3 is fixed by the retaining ring 4. Even under the maximum flow rate of air supply, the filter screen 3 will not have axial displacement. Therefore, the function of the filter screen 3 will not fail, the solid material will not enter the bottle valve 100, and the function of the bottle valve 100 will not be damaged.

[0030] In this embodiment, a partition 24 protrudes radially into the air supply channel 21 from the center of the valve 2. The air supply channel 21 passes through the partition 24 axially, and the filter screen 3 is located between the retaining ring 4 and the partition 24. The filter screen 3 directly or indirectly abuts against the partition 24 axially.

[0031] In this embodiment, the bottle neck valve 100 also includes an elastic element 5, which is disposed within the filter space 22 and axially abuts against the partition 24 and the filter screen 3. The elastic element 5 undergoes elastic deformation after compression, further ensuring the stability of the axial abutment. Simultaneously, the elastic element 5 forms an effective seal with the filter screen 3 and the partition 24 on both sides along the axial direction, completely eliminating the narrow gaps at the end face and blocking the passage of solid materials into the bottle neck valve 100.

[0032] The partition 24 divides the air supply channel 21 into an air outlet channel 211 that is close to the air hole 12 and an air inlet channel 212 that is far away from the air hole 12. The filter space 22 is disposed in the air outlet channel 211.

[0033] An opening structure 231 is formed on the blocking part 23, and the opening structure 231 is funnel-shaped, gradually increasing in size towards the air hole 12. The opening structure 231 is configured in this way to allow the installation of the retaining ring 4, which is inserted through the opening structure 231.

[0034] The retaining ring 4 is broken circumferentially to form a notch 42. The retaining ring 4 with the notch 42 has a certain elasticity in the circumferential direction, so that the retaining ring 4 can be compressed from the opening structure 231 and enter the filter space 22.

[0035] One end of the valve body 1 with the air hole 12 protrudes radially outward to form a stop portion. The stop portion is used to restrain and limit the movement of the air tank.

[0036] The stop part 23 of the stopcock 2 is made of a hard material, so that the retaining ring 4 can play a hard limiting role. After the retaining ring 4 is fixed, it not only presses the end face of the filter screen 3, but also keeps the elastic element 5 in a compressed state, so that it maintains a certain proportion of compression.

[0037] The valve body 1 has a limiting part 13 protruding radially into the receiving groove 11, and the plug 2 abuts against the limiting part 13 axially. The limiting part 13 limits the position of the plug 2 axially.

[0038] The plug 2 is spaced apart from the air hole 12 along the axial direction, thereby reserving a space between the plug 2 and the valve body 1 for gas to stay.

[0039] The working principle of the bottle valve 100 and the gas storage tank is as follows: The bottle neck valve 100 seals the gas storage tank. When the gas storage tank supplies gas, the stored gas flows from the tank into the bottle neck valve 100, and the gas medium flows in a designated direction. The airflow first enters the inlet channel 212, and when it passes through the filter screen 3, the solid material is filtered, and the pure gas enters the outlet channel 211 and flows to the air hole 12. The retaining ring 4 firmly presses the filter screen 3 and the elastic element 5 through a hard limit, so that the filter screen 3 will not have axial displacement even under high flow conditions. The compression of the elastic element 5 ensures the durability of the end face seal, and the airflow can only pass through the filter screen 3 and cannot leak from the bypass. The opening structure 231 of the retaining ring 4 allows it to be compressed and installed after installation from the trumpet-shaped opening structure 231 of the blocking part 23, making the installation simple and reliable.

[0040] The bottle neck valve 100 and gas storage tank of this utility model, by setting a retaining ring 4 to axially limit the filter screen 3, fundamentally eliminate the risk of axial displacement of the filter screen 3 under high pressure and high flow, ensuring that the filtration function is always effective. The compression design of the elastic element 5 forms two effective seals at the upper and lower end faces, completely eliminating the narrow gaps at the end faces, preventing solid materials from entering the bottle neck valve 100 through the gaps, and improving the system's sealing performance, safety, and axial support stability.

[0041] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0042] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A bottle neck valve (100) for opening and closing a gas storage tank and filtering the flowing gas, characterized in that: The bottle valve (100) includes: a valve body (1), which has a recessed receiving groove (11) at one end along the axial direction, and an air hole (12) through the other end along the axial direction; a stopcock (2), which is received in the receiving groove (11) from one end of the valve body (1), and has a gas supply channel (21) through the stopcock (2) along the radial direction, and has a filter space (22) in the middle of the stopcock (2), through which the gas supply channel (21) passes along the axial direction. One end of the plug (2) is provided with a stop (23) that protrudes radially into the air supply channel (21), and the air supply channel (21) passes through the stop (23) axially; a filter (3) is provided in the filter space (22); a baffle (4) is provided in the filter space (22), and one end of the baffle (4) abuts against the filter (3) axially, and the other end abuts against the stop (23), and the baffle (4) is provided with a through hole (41) for air to pass through in the middle.

2. The bottle valve according to claim 1, characterized in that: The valve (2) has a partition (24) protruding radially into the air supply channel (21) in the middle. The air supply channel (21) passes through the partition (24) axially. The filter (3) is located between the retaining ring (4) and the partition (24).

3. The bottle valve according to claim 2, characterized in that: The bottle valve (100) also includes an elastic element (5), which is disposed in the filter space (22) and abuts against the partition (24) and the filter screen (3) in an axial direction.

4. The bottle valve according to claim 2, characterized in that: The partition (24) divides the air supply channel (21) into an air outlet channel (211) close to the air hole (12) and an air inlet channel (212) away from the air hole (12), and the filter space (22) is disposed in the air outlet channel (211).

5. The bottle neck valve according to claim 1, characterized in that: An opening structure (231) is formed on the blocking part (23), and the opening structure (231) is in the shape of a trumpet that gradually increases in size toward the air hole (12).

6. The bottle valve according to claim 1, characterized in that: The retaining ring (4) is broken circumferentially to form a notch (42).

7. The bottle neck valve according to claim 1, characterized in that: The valve body (1) has a stop portion formed by the radially outward protruding end with an air hole (12).

8. The bottle valve according to claim 1, characterized in that: The stop part (23) of the stopcock (2) is made of hard material.

9. The bottle valve according to claim 1, characterized in that: The valve body (1) is provided with a limiting part (13) protruding radially into the receiving groove (11), the plug (2) abuts against the limiting part (13) axially, and the plug (2) is spaced apart from the air hole (12) axially.

10. A gas storage tank, characterized in that: The gas storage tank includes a tank body with a tank opening and a bottle opening valve (100) as described in any one of claims 1-9, the bottle opening valve (100) being used to open and close the tank opening.

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