Air cylinder liner

Abstract

The utility model discloses an inner container for air cylinder, including cylinder, gas pipe joint subassembly and inlay, is equipped with connecting port at both ends of cylinder, is equipped with outer thread portion one outside connecting port, is equipped with limit mesa in inlay, gas pipe joint subassembly includes metal outer sleeve, gas pipe joint and sealing washer, is equipped with the installation through -hole on metal outer sleeve, is equipped with internal thread joint in installation through -hole, gas pipe joint includes joint seat, is equipped with gas pipe connecting hole on joint seat, gas pipe joint sets up in installation through -hole, and gas pipe joint one end is equipped with along ascending boss, and along ascending boss has the sealing washer of sleeve, and sealing washer includes sealing ring body, and is equipped with sealing convex ring on sealing ring body one end surface, and sealing convex ring upper end surface and gas pipe joint one end surface abut, and sealing convex ring lower end surface and inlay outer end surface abut, and the inside of sealing ring body is equipped with trapezoidal limit platform, and along ascending boss outside is equipped with with trapezoidal limit platform matched inclined mesa, and sealing ring body other end and limit mesa abut. The structure improves the connection sealing property.

Description

Technical Field

[0001] This utility model relates to the technical field of automobile brake air storage, specifically to an inner liner for an air storage cylinder. Background Technology

[0002] An air reservoir is a gas storage device in a car's braking system. It stores gas compressed by an air compressor for use in systems such as braking and horn. Trucks have numerous air-dependent functions, from small things like the horn to large things like the brakes. Without an air reservoir, the amount of air pumped by the air compressor alone would be far from sufficient. Therefore, the air pumped by the air compressor needs to be stored in an air reservoir for use in critical situations. It typically consists of an inner liner and fiberglass wrapped around the outer liner.

[0003] As disclosed in our earlier application 202321442892.1, a gas storage cylinder is the inner liner of the gas storage cylinder. The two ends of this structure need to be threaded to tighten external air pipe connectors (one end serves as an air inlet with three inlets, and the other end serves as an air outlet with two outlets). At the same time, in order to ensure the airtightness of the final gas storage cylinder, sealing rings need to be set at the joints between the air pipe connectors and the two ends of the cylinder body. In order to limit the sealing rings, corresponding limiting grooves are generally machined on the inner side of the openings at both ends of the cylinder body. However, considering that the thickness and size of the ports at both ends of the cylinder body are not large, it is difficult to machine the limiting grooves separately. If the machining is not done properly, the ports are prone to puncture, which will eventually lead to the scrapping of the entire cylinder body. At the same time, concentricity cannot be guaranteed. In addition, the current sealing effect between the joints at both ends of the cylinder body and the air pipe connectors uses ordinary sealing rings, which have relatively poor sealing effect and the connection structure is complicated to operate. Therefore, improvements are needed. Utility Model Content

[0004] The purpose of this utility model is to provide an inner liner for a gas storage cylinder to solve the problems mentioned in the background art, such as the need for machining the limiting grooves on the inner side of the two ends of the cylinder body of the existing gas storage cylinder, which is difficult to process and cannot guarantee the concentricity of the processing. At the same time, the connection between the inner side of the two ends of the cylinder body and the gas pipe connector has poor sealing performance and the connection structure is complicated to operate.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an inner liner for a gas storage cylinder, comprising a cylinder body and a gas pipe connector assembly. Both ends of the cylinder body are provided with a connection port integrally formed with the cylinder body. Each connection port has an external thread portion on its outer side. The assembly also includes an insert heat-pressed into the connection port. The insert is a hollow cylinder, and its inner side has a limiting platform. The gas pipe connector assembly includes a metal outer sleeve, a gas pipe connector, and a sealing ring. The metal outer sleeve has a mounting through hole, and the mounting through hole has an internal thread interface threaded to the external thread portion. The gas pipe connector includes a connector seat, and the connector seat has a... The above-mentioned tracheal connection hole has a tracheal connector installed in the mounting through hole. The end of the tracheal connector facing the connection port has a rising boss. The rising boss is fitted with the sealing ring, which includes a sealing ring body. One end face of the sealing ring body has a forward-extending sealing protrusion. The upper end face of the sealing protrusion abuts against the end face of the tracheal connector facing the connection port, and the lower end face of the sealing protrusion abuts against the outer end face of the insert. The inner side of the sealing ring body has a trapezoidal limiting platform, and the outer side of the rising boss has an inclined platform that mates with the trapezoidal limiting platform. The outer side of the sealing ring body is inserted into the insert, ensuring that the lower end face of the sealing ring body abuts against the limiting platform.

[0006] Preferably, to further improve connectivity, the metal jacket includes an end face cap and an extension post. The mounting through hole is disposed in the extension post. The extension post and the end face cap are integrally formed, and the shape of the end face cap is consistent with the shape of the side of the cylinder, ensuring that the outer surface of the end face cap fits the outer surface of the side of the cylinder.

[0007] Preferably, for ease of disassembly, the internal thread interface covers the entire mounting through hole, a portion of the internal thread interface is threaded to the external thread portion, and the remaining portion of the internal thread interface is threaded to the external thread portion on the outside of the connector seat.

[0008] As a preferred embodiment, to further improve the sealing effect, an extension ring is provided at one end of the lifting boss facing the connection port. The extension ring is integrally formed with the lifting boss and passes through the limiting platform.

[0009] Preferably, in order to make the overall weight light and easy to manufacture, the cylinder is integrally molded from polyethylene material.

[0010] Preferably, the insert has a limiting notch on the outer side of the end face facing the tracheal connector assembly.

[0011] Preferably, to improve the overall strength of the final connection port and the connection performance with the insert, a reinforcing convex ring is provided on the outer side of the insert, and one or more reinforcing ribs are provided above and below the reinforcing convex ring, with the reinforcing ribs distributed in a ring around the outer periphery of the insert.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] Compared to directly machining a limiting platform inside the connection port of the cylinder, this structure can further ensure that the final connection port of the cylinder is stronger and harder, and it is also easier to machine. It avoids the problem of difficult machining caused by the small thickness and size of the ports at both ends of the cylinder. At the same time, it further ensures the concentricity of the machining.

[0014] Meanwhile, this structure uses a sealing ring with a special sealing shape. After the air pipe connector is combined with the sealing ring and insert, the sealing contact surface is increased, which ultimately improves the overall sealing effect. Moreover, the air pipe connector, connector seat and the outer side of the connection port are all connected by threads, which facilitates disassembly. After disassembly, the large-diameter connection port is exposed, which facilitates the cleaning of the inside of the cylinder. Attached Figure Description

[0015] Figure 1 This is a three-dimensional view of the left side structure of an inner liner for a gas storage cylinder in Embodiment 1.

[0016] Figure 2 This is a schematic diagram of the structure of the cylinder without the air pipe connector assembly installed on one side in this embodiment 1;

[0017] Figure 3 This is a schematic diagram of the inlay component.

[0018] Figure 4 This is a schematic diagram of the sealing ring structure;

[0019] Figure 5 This is a schematic diagram of the combined structure of the endotracheal connector assembly and the insert.

[0020] Figure 6 This is a schematic diagram of the metal jacket structure;

[0021] Figure 7 This is a top view of the assembled air pipe connector, sealing ring, and inserts.

[0022] Figure 8 for Figure 7 A cross-sectional view along the AA direction;

[0023] Figure 9 This is an exploded structural diagram of the endotracheal connector assembly and insert.

[0024] Figure 10This is a schematic diagram of the right side structure of an inner liner for a gas storage cylinder in Example 1.

[0025] In the diagram: 1. Cylinder body; 2. Air pipe connector assembly; 3. Connecting port; 4. External thread part 1; 5. Insert; 6. Limiting platform; 7. Limiting notch; 8. Reinforcing convex ring; 9. Reinforcing rib; 10. Metal jacket; 11. End face cap; 12. Extension column; 13. Air pipe connector; 14. Connector seat; 15. Air pipe connection hole; 16. Lifting boss; 17. Inclined platform; 18. Sealing ring; 19. Sealing ring body; 20. Sealing convex ring; 20. Trapezoidal limiting platform; 20. Mounting through hole; 20. Internal thread interface; 20. Small pitch internal thread interface; 20. Small pitch internal thread interface; 20. External thread part 2; 3. Extension ring. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying 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 this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] Example 1

[0029] Please see Figures 1-10As shown, this embodiment discloses an inner liner for an air storage cylinder, comprising a cylinder body 1, an air pipe connector assembly 2, and an insert 4 hot-pressed into the connection port 3. Both ends of the cylinder body 1 are provided with a connection port 3 integrally formed with the cylinder body 1. The outer side of each connection port 3 is provided with an external thread portion 301. The insert 4 is a hollow cylinder, with a limiting platform 401 on its inner side. A limiting notch 402 is provided on the outer side of the end face of the insert 4 facing the air pipe connector assembly 2. The air pipe connector assembly 2 includes a metal outer sleeve 201, an air pipe connector 202, and a sealing ring 203. The metal outer sleeve 201 is provided with a mounting through hole 204, and an internal thread interface 205 threadedly connected to the external thread portion 301 is provided within the mounting through hole 204. The air pipe connector 202 includes a connector seat 2021, and the connector seat 2021 is provided with one or more air pipe connection holes. 2022, the endotracheal connector 202 is disposed within the mounting through hole 204. A rising boss 2023 is provided at one end of the endotracheal connector 202 facing the connection port 3. The rising boss 2023 is fitted with the sealing ring 203. The sealing ring 203 includes a sealing ring body 2031. A forward-extending sealing protrusion 2032 is provided on one end face of the sealing ring body 2031. The upper end face of the sealing protrusion 2032 is flush with the endotracheal connector 202. The sealing ring 2032 abuts against the end face facing the connection port 3, and the lower end face of the sealing ring 2032 abuts against the outer end face of the insert 4. A trapezoidal limiting platform 2033 is provided on the inner side of the sealing ring body 2031, and an inclined platform 2024 that cooperates with the trapezoidal limiting platform 2033 is provided on the outer side of the rising boss 2023. The outer side of the sealing ring body 2031 is inserted into the insert 4 and ensures that the lower end face of the sealing ring body 2031 abuts against the limiting platform 401.

[0030] Preferably, to further improve connectivity, the metal jacket 201 includes an end face cap 2011 and an extension post 2012. The mounting through hole 204 is disposed in the extension post 2012. The extension post 2012 and the end face cap 2011 are integrally formed, and the shape of the end face cap 2011 is consistent with the shape of the side of the cylinder 1, ensuring that the outer surface of the end face cap 2011 fits the outer surface of the side of the cylinder 1. In this structure, by using the end face cap 2011, it is possible to achieve a precise fit between the end face cap 2011 and the side of the cylinder 1 after it is installed, further improving the sealing and connectivity.

[0031] Preferably, for ease of disassembly, the internal thread interface 205 covers the entire mounting through hole 204. A portion of the internal thread interface 205 is threadedly connected to the external thread portion 301, and the remaining portion is threadedly connected to the external thread portion 5 on the outer side of the connector seat 2021. To ensure connection stability, the internal thread interface 205 employs two pitch forms, one large and one small pitch, such as... Figure 6 As shown, the small-pitch internal thread interface 2051 is used for threaded connection with the external thread portion 25 on the outside of the connector seat 2021, and the large-pitch internal thread interface 2052 is used for threaded connection with the external thread portion 301.

[0032] As a preferred option, to further improve the sealing effect, an extension ring 6 is provided at one end of the lifting boss 2023 facing the connection port 3. The extension ring 6 is integrally formed with the lifting boss 2023, and the extension ring 6 passes through the limiting platform 401. By adding the extension ring 6, it extends further into the cylinder 1, thereby increasing the contact area with the insert 4 and further improving the sealing effect.

[0033] Preferably, in order to make the overall weight light and easy to manufacture, the cylinder 1 is integrally molded from polyethylene material.

[0034] Preferably, to improve the overall strength of the final connection port 3 and the connection performance with the insert 4, a reinforcing convex ring 403 is provided on the outer side of the insert 4, and one or more reinforcing ribs 404 are provided above and below the reinforcing convex ring 403. The reinforcing ribs 404 are distributed in a ring around the outer periphery of the insert 4. The insert 4 is provided with reinforcing convex ring 403 and reinforcing ribs 404. After being hot-pressed together with the connection port 3, the overall strength of the final connection port 3 and the connection performance with the insert 4 can be further improved.

[0035] This structure pre-fabricates the insert 4, and sets a limiting platform 401 within the insert 4. The insert 4 is then hot-pressed onto the connection port 3 of the cylinder 1, ultimately forming an integral structure of the insert 4 and the cylinder 1. Compared to directly machining the limiting platform 401 within the connection port 3 of the cylinder 1, this method further ensures increased strength and hardness of the final connection port 3 of the cylinder 1, and is also easier to process, avoiding the problem of difficult processing due to the small thickness and size of the ports at both ends of the cylinder. It also further ensures concentricity during processing. Additionally, this structure has a sealing ring 2032 at one end of the sealing ring. The upper surface of the sealing ring 2032 abuts against the end face of the air pipe connector 202 facing the connection port 3. The lower end face abuts against the outer end face of the insert 4. The lower end of the sealing ring body 2031 is inserted into the insert 4 and abuts against the limiting platform 401. A trapezoidal limiting platform 2033 is provided on the inner side of the sealing ring body 2031. An inclined platform 2024 is provided on the outer side of the rising boss 2023 on the air pipe connector 202, which abuts against the trapezoidal limiting platform 2033. This structure uses a sealing ring with a special sealing shape. After the air pipe connector 202 is combined with the sealing ring 203 and the insert 4, the sealing contact surface is increased, which ultimately improves the overall sealing effect. Moreover, the air pipe connector 202, the connector seat 2021 and the outer side of the connection port 3 are all connected by threads, which facilitates disassembly later. After disassembly, the large-diameter connection port 3 is exposed, which facilitates cleaning of the inside of the cylinder 1 later. It should also be noted that... Figure 7 and Figure 8 This is a structural diagram of the air inlet. The structure on the other side of the cylinder 1 is the same as that of the air inlet, the difference being that there are only two air pipe connection holes 2022 on the outlet. For details, please refer to [reference needed]. Figure 10 As shown.

[0036] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An inner liner for a gas storage cylinder, comprising a cylinder body (1) and a gas pipe connector assembly (2), wherein both ends of the cylinder body (1) are provided with a connection port (3) integrally formed with the cylinder body (1), and the outer side of each connection port (3) is provided with an external thread portion (301), characterized in that: It also includes an insert (4) hot-pressed into the connection port (3). The insert (4) is a hollow cylinder. A limiting platform (401) is provided on the inner side of the insert (4). The air pipe connector assembly (2) includes a metal jacket (201), an air pipe connector (202), and a sealing ring (203). The metal jacket (201) is provided with a mounting through hole (204). An internal thread interface (205) that is threadedly connected to the external thread part (301) is provided in the mounting through hole (204). The air pipe connector (202) includes a connector seat (2021). The connector seat (2021) is provided with one or more air pipe connection holes (2022). The air pipe connector (202) is located in the mounting through hole (204). An extension boss (2023) is provided at the end of the air pipe connector (202) facing the connection port (3). The lifting boss (2023) is fitted with the sealing ring (203), which includes a sealing ring body (2031). One end face of the sealing ring body (2031) is provided with a forward-extending sealing protrusion (2032). The upper end face of the sealing protrusion (2032) abuts against the end face of the tracheal connector (202) facing the connection port (3). The lower end of the sealing protrusion (2032) The sealing ring body (2031) abuts against the outer end face of the insert (4). The inner side of the sealing ring body (2031) is provided with a trapezoidal limiting platform (2033). The outer side of the lifting boss (2023) is provided with an inclined platform (2024) that cooperates with the trapezoidal limiting platform (2033). The outer side of the sealing ring body (2031) is inserted into the insert (4) and ensures that the lower end face of the sealing ring body (2031) abuts against the limiting platform (401).

2. The inner liner for a gas storage cylinder according to claim 1, characterized in that: The metal jacket (201) includes an end face cap (2011) and an extension post (2012). The mounting through hole (204) is disposed in the extension post (2012). The extension post (2012) and the end face cap (2011) are integrally formed. The shape of the end face cap (2011) is consistent with the shape of the side of the cylinder (1), ensuring that the outer surface of the end face cap (2011) fits against the outer surface of the side of the cylinder (1).

3. The inner liner for a gas storage cylinder according to claim 1, characterized in that: The internal thread interface (205) covers the entire mounting through hole (204), a portion of the internal thread interface (205) is threaded to the external thread part one (301), and the remaining portion of the internal thread interface (205) is threaded to the external thread part two (5) on the outside of the connector seat (2021).

4. The inner liner for a gas storage cylinder according to claim 1, 2, or 3, characterized in that: An extension ring (6) is provided at one end of the lifting boss (2023) facing the connection port (3). The extension ring (6) is integrally formed with the lifting boss (2023) and passes through the limiting platform (401).

5. The inner liner for a gas storage cylinder according to claim 1, 2, or 3, characterized in that: The cylinder (1) is integrally formed from polyethylene material.

6. The inner liner for a gas storage cylinder according to claim 1, 2, or 3, characterized in that: The insert (4) has a limiting notch (402) on the outer side of the end face facing the tracheal connector assembly (2).

7. The inner liner for a gas storage cylinder according to claim 1, 2, or 3, characterized in that: The outer side of the inlay (4) is provided with a reinforcing protrusion ring (403), and the upper and lower sides of the reinforcing protrusion ring (403) are provided with one or more reinforcing ribs (404), which are distributed in a ring around the outer periphery of the inlay (4).

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