Carbon fiber winding composite gas cylinder

Abstract

The utility model discloses a carbon fiber winding composite gas cylinder which comprises an inner container, a carbon fiber layer, a fixed connection layer and a valve body connector. A carbon fiber layer is wound on the outer side of the inner container; a bottle opening formed by connecting the inner container and the carbon fiber layer is covered with a fixed connection layer, and the inner container and the carbon fiber layer are wrapped. A valve body connector is detachably connected to the side, located on the inner container, of the fixed connection layer. The carbon fiber winding composite gas cylinder has the advantages that the inner container and the carbon fiber layer are stably connected through the fixedly-connecting layer, the valve body connector is connected with the inner side of the fixedly-connecting layer, leakage of the carbon fiber winding composite gas cylinder can be effectively prevented, use safety is guaranteed, the outer layer, the end layer and the inner layer are integrally designed, and the carbon fiber winding composite gas cylinder is more stable in use. And the end parts of the outer layer and the inner layer are arc-shaped, so that the attachment is convenient, and the connection strength and stability are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas cylinders, in particular to a carbon fiber wound composite gas cylinder. Background Art

[0002] A carbon fiber wound gas cylinder is a high-pressure gas cylinder that is wound with carbon fiber materials to enhance the structural strength and pressure resistance of the gas cylinder. Compared with metal gas cylinders, carbon fiber wound oxygen cylinders have some remarkable characteristics and advantages. Due to the use of carbon fiber materials, carbon fiber gas cylinders are much lighter than metal gas cylinders of the same volume, about 50% lighter, which makes them more convenient to carry and transport. Carbon fiber wound gas cylinders have a very broad application prospect in the fields of aerospace, fire rescue, diving, and medical treatment, especially in the case of equipment that requires portability and high safety. However, due to the use of different materials at the bottle mouth of the existing carbon fiber wound gas cylinders, leakage problems are likely to occur at the bottle mouth, leading to safety accidents. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a carbon fiber wound composite gas cylinder that can ensure no leakage problem at the bottle mouth.

[0004] In order to solve the above technical problems, the technical solution of the utility model is as follows:

[0005] A carbon fiber wound composite gas cylinder includes an inner liner, a carbon fiber layer, a bonding layer, and a valve body joint; the carbon fiber layer is wound outside the inner liner; a bonding layer is covered at the bottle mouth formed by the connection of the inner liner and the carbon fiber layer, and wraps the inner liner and the carbon fiber layer; the bonding layer is detachably connected with the valve body joint on the inner liner side.

[0006] Further, a plurality of circumferentially distributed bolt holes are opened on the inner liner, the carbon fiber layer, and the bonding layer from the outside to the inside of the bottle mouth, and bolts are threadedly connected in the bolt holes.

[0007] Further, the bonding layer includes an outer layer, an end layer, and an inner layer; the outer layer, the end layer, and the inner layer are integrally formed.

[0008] Further, an annular groove is opened on the end layer; a sealing ring is placed in the groove.

[0009] Further, one end of the outer layer away from the end layer is arc-shaped for fitting with the outside of the carbon fiber layer.

[0010] Further, one end of the inner layer away from the end layer is arc-shaped for fitting with the inner wall of the inner liner.

[0011] Further, a plurality of annular protrusions are provided on the fitting surface of the inner layer and the inner liner.

[0012] Advantages of the present utility model:

[0013] By providing a fixed connection layer to stably connect the inner liner and the carbon fiber layer, and then connecting the valve body joint to the inner side of the fixed connection layer, it can effectively prevent leakage of the carbon fiber wound composite gas cylinder, ensuring the safety of use. Through the integrated molding design of the outer layer, end layer, and inner layer, and the ends of the outer layer and inner layer being arc-shaped for easy fitting, the connection strength and stability are improved. Description of the drawings

[0014] Figure 1 is a structural schematic diagram of the present utility model;

[0015] Figure 2 is Figure 1 an enlarged view of part A in

[0016] Figure 3 a structural schematic diagram of the fixed connection layer.

[0017] In the figure, 1 - inner liner, 2 - carbon fiber layer, 3 - fixed connection layer, 4 - valve body joint, 5 - bolt hole, 6 - sealing ring;

[0018] 31 - outer layer, 32 - end layer, 33 - inner layer, 34 - annular groove, 35 - annular protrusion. Detailed implementation manners

[0019] The following further describes the detailed implementation manners of the present utility model with reference to the drawings. It should be noted here that the description of these implementation manners is for helping to understand the present utility model, but does not constitute a limitation to the present utility model. In addition, the technical features involved in the various implementation manners of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0020] Referring to Figures 1-3 as shown, a carbon fiber wound composite gas cylinder includes an inner liner 1, a carbon fiber layer 2, a fixed connection layer 3, and a valve body joint 4; the outer side of the inner liner 1 is wound with a carbon fiber layer 2; a fixed connection layer 3 covers the bottle mouth formed by the connection of the inner liner 1 and the carbon fiber layer 2, and wraps the inner liner 1 and the carbon fiber layer 2; the fixed connection layer 3 is detachably connected with a valve body joint 4 on the side of the inner liner 1.

[0021] Specifically, in order to improve the connection strength, a plurality of circumferentially distributed bolt holes 5 are provided on the inner liner 1, the carbon fiber layer 2, and the fixed connection layer 3 from the outside to the inside of the bottle mouth, and bolts are threadedly connected in the bolt holes 5.

[0022] It should be noted that the inner liner 1 and the carbon fiber layer 2 are materials used in the normal use process, and it is easy for those skilled in the art to know the materials; the fixing layer 3 can wrap the inner liner 1 and the carbon fiber layer 2 to ensure the tightness of the connection, so that it can be effectively connected to the valve body joint 4, improving the sealing performance; the valve body joint 4 can facilitate the connection.

[0023] Specifically, the fixing layer 3 includes an outer layer 31, an end layer 32, and an inner layer 33; the outer layer 31, the end layer 32, and the inner layer 33 are integrally formed. The outer layer 31, the end layer 32, and the inner layer 33 can effectively connect the inner liner 1 and the carbon fiber layer 2.

[0024] Specifically, in order to improve the sealing performance, an annular groove 34 is formed on the end layer 32; a sealing ring 6 is placed in the groove.

[0025] Specifically, in order to improve the fitting degree, one end of the outer layer 31 away from the end layer 32 is arc-shaped for fitting with the outside of the carbon fiber layer 2.

[0026] Similarly, in order to further improve the fitting degree, one end of the inner layer 33 away from the end layer 32 is arc-shaped for fitting with the inner wall of the inner liner 1.

[0027] Specifically, in order to improve the connectivity, a plurality of annular protrusions 35 are provided on the fitting surface of the inner layer 33 and the inner liner 1.

[0028] The working principle of the present utility model:

[0029] By arranging the fixing layer 3 to stably connect the inner liner 1 and the carbon fiber layer 2, and then connecting the valve body joint 4 to the inner side of the fixing layer 3, it can effectively prevent the leakage of the carbon fiber wound composite gas cylinder, ensuring the safety of use. Through the integrally formed design of the outer layer 31, the end layer 32, and the inner layer 33, and the ends of the outer layer 31 and the inner layer 33 are both arc-shaped, which is convenient for fitting and improves the connection strength and stability.

[0030] The above has described the embodiments of the present utility model in detail in conjunction with the accompanying drawings, but the present utility model is not limited to the described embodiments. For those skilled in the art, without departing from the principle and spirit of the present utility model, various changes, modifications, substitutions, and variations made to these embodiments still fall within the protection scope of the present utility model.

Claims

1. A carbon fiber wrapped composite gas cylinder, characterized in that: The invention comprises an inner liner (1), a carbon fiber layer (2), a fixing layer (3), and a valve body joint (4); the outer side of the inner liner (1) is wound with a carbon fiber layer (2); the bottle mouth formed by the connection between the inner liner (1) and the carbon fiber layer (2) is covered with a fixing layer (3), and the inner liner (1) and the carbon fiber layer (2) are wrapped; the fixing layer (3) is located on the side of the inner liner (1) and is detachably connected to the valve body joint (4).

2. The carbon fiber wrapped composite gas cylinder according to claim 1, characterized in that: A plurality of bolt holes (5) distributed circumferentially are provided on the inner liner (1), the carbon fiber layer (2) and the fixing layer (3) from the outside to the inside of the bottle mouth, and bolts are connected to the inner threads of the bolt holes (5).

3. The carbon fiber wrapped composite gas cylinder according to claim 2, characterized in that: The fixing layer (3) comprises an external layer (31), an end layer (32), and an internal layer (33); the external layer (31), the end layer (32), and the internal layer (33) are integrally formed.

4. The carbon fiber wound composite gas cylinder according to claim 3, characterized in that: An annular groove (34) is provided on the end layer (32); a sealing ring (6) is placed in the groove.

5. The carbon fiber wrapped composite gas cylinder according to claim 3, characterized in that: One end of the outer layer (31) away from the end layer (32) is arc-shaped and is used to fit with the outside of the carbon fiber layer (2).

6. The carbon fiber wound composite gas cylinder according to claim 3, characterized in that: One end of the inner layer (33) away from the end layer (32) is arc-shaped and is used to fit with the inner wall of the liner (1).

7. The carbon fiber wound composite gas cylinder according to claim 3, characterized in that: The contact surface between the inner layer (33) and the inner liner (1) is provided with a plurality of annular protrusions (35).

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