Sealing structure of composite material gas cylinder

Abstract

The utility model discloses a sealing structure of a composite material gas cylinder, which relates to the technical field of automobile parts and comprises an end jacket connected with the end part of a non-metal liner, an end connected with the end jacket, and a sealing ring arranged between the end and the non-metal liner and used for sealing, a protruding part used for supporting the non-metal inner container is arranged on the end socket outer sleeve, the protruding part is matched with a groove which is formed in the non-metal inner container and provided with an outward opening, and a through hole which is connected with the non-metal inner container and used for installing an accessory is formed in the end socket. According to the utility model, the welding process is not needed, the pore defect and the welding slag defect are avoided, the end jacket is in threaded connection with the non-metal liner, the end is in threaded connection with the end jacket, the connection is more stable, the later maintenance is simple and convenient, and the defect problem existing in injection molding of a pre-embedded metal piece is solved; efficient sealing is achieved, gas leakage is effectively prevented, and the overall safety and reliability of the gas cylinder are improved.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to a sealing structure for a composite material gas cylinder. Background Technology

[0002] Traditional automotive gas cylinders are made of steel or aluminum, with the end connected to the cylinder body by welding. The sealing is ensured by the quality of the welding, but the welding process is prone to defects such as pores and weld slag, which affect the sealing of the gas cylinder. At the same time, the weld slag affects the cleanliness of the inside of the gas cylinder and can easily cause blockage of the gas system.

[0003] In recent years, composite material gas cylinders have emerged. Most gas cylinder liners are made using injection molding and sealed by pre-embedded metal parts. Due to the different shrinkage rates of metal and non-metal when the temperature changes, gaps are easily generated, leading to gas leakage. In addition, when the gas cylinder is repeatedly filled and discharged, the metal joints are subjected to pressure, and the connection between them and the non-metallic cylinder body is prone to loosening, posing a risk of detachment.

[0004] Therefore, it is necessary to design a sealing structure for composite material gas cylinders to improve the above-mentioned problems. Utility Model Content

[0005] To address the aforementioned problems in the prior art, this utility model provides a sealing structure for composite material gas cylinders that eliminates the need for welding processes and adds an end sleeve and sealing ring, resulting in a good sealing effect.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A sealing structure for a composite gas cylinder includes an end sleeve connected to the end of a non-metallic inner liner, an end connected to the end sleeve, and a sealing ring disposed between the end and the non-metallic inner liner for sealing. The end sleeve has a protrusion for supporting the non-metallic inner liner, the protrusion matching an outward-facing groove formed on the non-metallic inner liner. The end has a through hole connected to the non-metallic inner liner for installing accessories.

[0008] As a preferred embodiment of this invention, the end sleeve is threadedly connected to the non-metallic inner liner.

[0009] As a preferred embodiment of this invention, the end cap is connected to the end cap sleeve by a threaded connection.

[0010] As a preferred embodiment of this utility model, the accessories include a nut seat, a test connector, a drain valve, a drain pipe, an air inlet, and an air outlet.

[0011] As a preferred embodiment of this invention, the outer surface of the end sleeve is provided with anti-slip texture to facilitate operation during installation and disassembly.

[0012] By adopting the above technical solution, the beneficial effects of this utility model compared with the prior art are:

[0013] 1. The sealing structure of the composite gas cylinder of this utility model does not require welding process, avoiding the generation of pore defects and welding slag defects. The end sleeve is threaded to the non-metallic inner liner, and the end is threaded to the end sleeve, which simplifies the installation process, improves assembly efficiency, makes the connection more stable, and makes later maintenance simple.

[0014] 2. The sealing structure of the composite material gas cylinder of this utility model solves the defects of the injection-molded embedded metal parts. The end is sealed with a sealing ring to avoid the risk of the embedded parts loosening or falling out. It also achieves efficient sealing, effectively prevents gas leakage, improves the overall safety and reliability of the gas cylinder, and has broad market application prospects. Attached Figure Description

[0015] Other objects and results of this invention will become more apparent and readily understood with reference to the following description taken in conjunction with the accompanying drawings, and with a more complete understanding of the invention. In the drawings:

[0016] Figure 1 This is a cross-sectional view of an example of this utility model;

[0017] The reference numerals in the drawings include: end sleeve 1, end 2, sealing ring 3, non-metallic inner liner 4, protrusion 11, and through hole 21. Detailed Implementation

[0018] The technical solutions of various embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. 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.

[0019] 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 component 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.

[0020] 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. It should be pointed out that all accompanying drawings are exemplary representations. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] The present invention will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0022] Reference Figure 1 , Figure 1 This is a cross-sectional view of an example of this utility model. This utility model provides a sealing structure for a composite material gas cylinder, including an end sleeve 1, an end 2, a sealing ring 3, and a non-metallic inner liner 4. The end sleeve 1 is connected to the end of the non-metallic inner liner 4, preferably by a threaded connection. An anti-loosening thread design can be used to prevent loosening due to vibration during use. The end sleeve 1 is made of materials including, but not limited to, steel and aluminum. The end sleeve 1 has a protrusion 11 for supporting the non-metallic inner liner 4. The protrusion 11 matches an outward-facing groove formed on the non-metallic inner liner 4. The protrusion 11 can be achieved by machining, welding, bolting, etc. The shape and number of the protrusion can be optimized according to the structure and support requirements of the non-metallic inner liner. The end sleeve 1 mainly serves a connecting, supporting, and protective function. The outer surface of the end sleeve 1 has anti-slip textures (not shown) to facilitate operation during installation and disassembly. End 2... The end cap 2 is connected to the end cap 1, preferably by a threaded connection. An anti-loosening thread design can be used to prevent loosening due to vibration during use. The end cap 2 is made of materials including, but not limited to, steel and aluminum. It is processed by die casting, casting, machining, etc. The end cap 2 has a through hole 21 for installing accessories (not shown) that connects to the non-metallic inner liner 4, allowing gas to pass through. Accessories include a nut seat, a test connector, a drain valve, a drain pipe, an air inlet, and an air outlet. The side of the through hole 21 facing the non-metallic inner liner 4 is generally connected to a drain pipe, while the other side is generally connected to a nut seat, a test connector, a drain valve, an air inlet, and an air outlet. A sealing ring 3 is placed between the end cap 2 and the non-metallic inner liner 4 for sealing. The sealing ring 3 is made of materials including, but not limited to, rubber, polytetrafluoroethylene, and polyurethane. The sealing ring 3 can be an O-ring or other shaped sealing structure to ensure the reliability and durability of the seal.

[0023] The following will refer to Figure 1 The working principle of this utility model will be explained.

[0024] During installation, the end cap 1 and the non-metallic inner liner 4 are first assembled together, so that the protrusion 11 of the end cap 1 supports the non-metallic inner liner 4 and the part that mates with it. Then the sealing ring 3 is installed, and finally the end cap 2 is installed. The end cap 2 is screwed into the non-metallic inner liner 4 through the thread of the end cap 1 until the end cap 2 presses against the sealing ring 3, thereby achieving the sealing function.

[0025] This utility model discloses a sealing structure for a composite material gas cylinder that eliminates the need for welding, thus avoiding porosity and weld slag defects. The end sleeve is threadedly connected to the non-metallic inner liner, and the end sleeve is threadedly connected to the end sleeve, simplifying the installation process, improving assembly efficiency, ensuring a more stable connection, and simplifying subsequent maintenance. It solves the defects of injection-molded embedded metal parts. The end sleeve is sealed to the non-metallic inner liner through a sealing ring, avoiding the risk of loosening or detachment of the embedded parts, achieving efficient sealing, effectively preventing gas leakage, and improving the overall safety and reliability of the gas cylinder. It has broad market application prospects.

[0026] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A sealing structure of a composite material gas cylinder, characterized by comprising: The end sleeve is connected with the end of the non-metal liner, the end is connected with the end sleeve, and the sealing ring is arranged between the end and the non-metal liner for sealing.

2. The sealing structure of a composite material gas cylinder according to claim 1, wherein The end sleeve is screwed with the non-metal liner.

3. The sealing structure of a composite material gas cylinder according to claim 1, wherein The end is screwed with the end sleeve.

4. The sealing structure of a composite material gas cylinder according to claim 1, wherein The accessory includes a nut seat, a detection joint, a drain valve, a drain pipe, an air inlet and an air outlet.

5. The sealing structure of a composite material gas cylinder according to claim 1, wherein The outer surface of the end sleeve is provided with anti-skid lines to facilitate the operation during the installation and disassembly.

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