Dustproof protection device for hydrogen bottle opening

Abstract

The utility model relates to the technical field of hydrogen bottle opening protection devices, and aims to solve the problems that an existing bottle opening protection device for a hydrogen bottle is inconvenient to install, does not prevent dust and easily causes pollution of the hydrogen bottle. The utility model provides a dustproof protection device for a hydrogen bottle opening. The dustproof protection device comprises an elastic cover body and an elastic plug body, the side wall of the elastic cover body is wedge-shaped along the axial direction; the thickness of the side wall of the elastic cover body is gradually increased from the bottom opening end to the top; an air hole is formed in the middle of the elastic cover body; the elastic plug body is embedded in the air hole; according to the dustproof protection device for the hydrogen bottle opening, threads of the bottle opening of the hydrogen bottle cannot be damaged, meanwhile, the fastening degree after connection is guaranteed, and the sealing performance of the hydrogen bottle in the follow-up working procedures such as valve body installation is guaranteed; furthermore, an elastic plug body is adopted, so that air hole blocking and dust prevention are facilitated, and dismounting for air pressure balance is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydrogen bottle mouth protection device technical field, specifically, relate to a dustproof device for hydrogen bottle mouth. BACKGROUND

[0002] The hydrogen bottle is a special container for storing high-pressure hydrogen, and is widely used in hydrogen fuel cell vehicles, aerospace, industrial hydrogen storage and other fields. The bottle mouth of the hydrogen bottle is a key part connecting the hydrogen storage container and the external pipeline. Sealing failure may cause hydrogen leakage or even explosion, and thus there is a high requirement for the cleanliness inside the hydrogen bottle. During the production of the bottle body of the hydrogen bottle, and when it is delivered without a valve, it is particularly important to protect the bottle body from pollution. That is, after the bottle body is cleaned, effective dustproof or anti-pollution measures should be taken before the valve is installed, or when the bottle body is delivered without a valve, anti-pollution measures should be taken.

[0003] In the prior art, a plastic cap similar to a mineral water bottle cap is usually used to cap the bottle mouth of the hydrogen bottle. An air pressure balancing hole is provided in the plastic cap body for further balancing the air pressure inside and outside the bottle. However, the use of the plastic cap body with the air pressure balancing hole has the following defects: first, it cannot match hydrogen bottles with multiple sizes of bottle mouths; second, the protective cover has an exposed air pressure balancing hole and cannot effectively prevent dust; third, the joint position between the cap body and the bottle mouth has the same thickness, which makes installation or removal troublesome and easily causes wear to the bottle mouth.

[0004] Based on the above description, there is an urgent need for a dustproof protection device for the bottle mouth of a hydrogen bottle that is suitable for both large and small hydrogen bottles, does not damage the bottle mouth, and can effectively prevent dust. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a dustproof protection device for the bottle mouth of a hydrogen bottle, which solves the technical problems of the existing bottle mouth protection device for a hydrogen bottle, such as inconvenient installation, no dust prevention, and easy pollution of the hydrogen bottle.

[0006] The embodiments of the utility model are implemented by the following technical solutions:

[0007] A dustproof protection device for the bottle mouth of a hydrogen bottle includes an elastic cap body and an elastic plug body. The side wall of the elastic cap body is wedge-shaped along the axial direction. The thickness of the side wall of the elastic cap body gradually increases from the bottom opening end to the top. An air hole is provided in the middle of the elastic cap body. The elastic plug body is embedded in the air hole.

[0008] As a preferred embodiment, the elastic cap body includes a top cap, a first ring side wall, and a second ring side wall. The first ring side wall and the second ring side wall are oppositely arranged at the two ends of the top cap. The air hole penetrates through the top cap. The air hole is connected between the first ring side wall and the second ring side wall.

[0009] Preferably, the inner diameter of the first ring sidewall is smaller than the inner diameter of the second ring sidewall.

[0010] Preferably, one end of the elastic plug body is embedded in the air hole; and the other end of the elastic plug body is connected with the first ring sidewall through the elastic rope.

[0011] Preferably, one end of the elastic plug body is embedded in the air hole; and the other end of the elastic plug body is connected with the second ring sidewall through the elastic rope.

[0012] Preferably, the elastic plug body is a conical plug body; the conical plug body has a tapered end embedded in the air hole and extending to be provided with an elastic suction cup; and the opening end of the elastic suction cup faces the top cover.

[0013] Preferably, the conical plug body is externally provided with a stop ring at the expanded end.

[0014] The technical scheme of the utility model has at least the following advantages and beneficial effects:

[0015] In the utility model, the sidewall of the elastic cover body is wedge-shaped along the axial direction, and the thickness of the sidewall of the elastic cover body gradually increases from the bottom opening end to the top, so that the overall non-equal-wall-thickness elastic cover body is formed. Compared with the equal-wall-thickness plastic cover body with poor elasticity in the prior art, the elastic cover body is more convenient to disassemble and assemble, does not damage the bottle opening thread of the hydrogen cylinder, ensures the fastening degree after joint, and ensures the sealing property of the hydrogen cylinder during the subsequent process of installing the valve body. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 FIG. 1 is a first perspective view of the utility model;

[0017] Figure 2 FIG. 2 is a second perspective view of the utility model;

[0018] Figure 3 FIG. 3 is a third perspective view of the utility model;

[0019] Figure 4 FIG. 4 is a sectional view of the utility model;

[0020] Figure 5 FIG. 5 is a structure diagram of the elastic plug body of the utility model.

[0021] FIG. 1 is a first perspective view of the utility model; DETAILED DESCRIPTION

[0022] The specific embodiments are described below with reference to the accompanying drawings.

[0023] Embodiment 1

[0024] Please refer to Figures 1 to 5 The utility model provides the following technical scheme: a dustproof protection device for hydrogen cylinder mouth is suitable for the dustproof protection condition after hydrogen cylinder cleaning.

[0025] Specifically, as Figures 1 to 4 shown, a dustproof protection device for hydrogen cylinder mouth includes an elastic cover body 1 and an elastic plug body 2; the side wall of the elastic cover body 1 is wedge-shaped along the axial direction; the thickness of the side wall of the elastic cover body 1 gradually increases from the bottom opening end to the top; a gas hole 3 is formed in the middle of the elastic cover body 1; the elastic plug body 2 is embedded in the gas hole 3.

[0026] In this embodiment, the elastic cover body 1 and the elastic plug body 2 are made of rubber or silicone or other materials with elasticity, and are made by injection molding or mold pressing process commonly used in the field; wherein the side wall of the elastic cover body 1 is wedge-shaped along the axial direction; the thickness of the side wall of the elastic cover body 1 gradually increases from the bottom opening end to the top, thereby forming a whole non-equal wall thickness elastic cover body 1, which is more convenient to disassemble than the equal wall thickness plastic cover body with poor elasticity in the prior art, and will not damage the bottle thread of the hydrogen cylinder, while ensuring the fastening degree after joint and the sealing property of the hydrogen cylinder during subsequent processes such as installation of valve body; by using the elastic plug body 2, it is convenient to plug the gas hole 3 to prevent dust and also convenient to disassemble for pressure balance.

[0027] Specifically, as Figures 2 to 4 shown, the elastic cover body 1 includes a top cover 11, a first ring side wall 12 and a second ring side wall 13; the first ring side wall 12 and the second ring side wall 13 are oppositely arranged at both ends of the top cover 11; the gas hole 3 penetrates through the top cover 11; the gas hole 3 is communicated between the first ring side wall 12 and the second ring side wall 13.

[0028] In this embodiment, the inner diameter of the first ring side wall 12 is smaller than the inner diameter of the second ring side wall 13; by using the first ring side wall 12 and the second ring side wall 13 with different inner diameters and oppositely arranging them at both ends of the top cover 11, and at the same time, the gas hole 3 is arranged in the middle of the top cover 11 to communicate the first ring side wall 12 and the second ring side wall 13; thereby, it is convenient to apply the elastic cover body 1 to large and small bottle mouths, and also convenient to use the same elastic plug body 2 to achieve bidirectional plugging of the gas hole 3, and also to use the ring side wall on the other side as a pull handle for pulling off the cover, which can be quickly and low-damage disassembled in cooperation with the non-equal wedge-shaped wall thickness.

[0029] Specifically, as Figure 1 and Figure 5 shown, one end of the elastic plug body 2 is embedded in the gas hole 3; the other end of the elastic plug body 2 is connected with the first ring side wall 12 through the elastic rope 4.

[0030] Specifically, as shown in Figure 1 and Figure 5 One end of the elastic plug body 2 is embedded in the air hole 3; the other end of the elastic plug body 2 is connected with the second ring side wall 13 through the elastic rope 4.

[0031] In this embodiment, the elastic rope 4 can be made of the same material as the elastic cover body 1, and is set as an integral structure through the process of injection molding. In addition, it can also be separately bonded to the first ring side wall 12 or the second ring side wall 13 by bonding. In order to strengthen the stability of the connection between the elastic rope 4 and the first ring side wall 12 or the second ring side wall 13, the connecting end of the elastic rope 4 and the ring side wall can be further thickened or a reinforcing ring seat can be provided. Alternatively, a separate elastic rope 4 or a pull ring can also be directly used.

[0032] Specifically, as shown in Figure 5 The elastic plug body 2 is a conical plug body; the conical plug body is embedded in the air hole 3 and is extended with an elastic suction cup 5; the opening end of the elastic suction cup 5 faces the top cover 11. The expanding end of the conical plug body is externally provided with a stop ring 6.

[0033] In this embodiment, the elastic suction cup 5 can be made of rubber or silicone material consistent with the elastic plug body 2; by passing the conical plug body through the air hole 3, and then passing the elastic suction cup 5 through the air hole 3, and then pulling it in reverse, the elastic suction cup 5 is adsorbed on the top cover 11, thereby ensuring the stable sealing of the air hole 3. When disassembly is needed, the elastic suction cup 5 is first pushed to release the negative pressure state, and then the elastic rope 4 is pulled out.

Claims

1. A dust protection device for a hydrogen cylinder port, characterized by: The utility model provides an elastic cover (1) and elastic plug body (2) are included, the side wall of elastic cover (1) is wedge-shaped along the axial direction, the side wall thickness of elastic cover (1) gradually increases from the bottom opening end to top, the middle part of elastic cover (1) is provided with air hole (3), and elastic plug body (2) is embedded in air hole (3).

2. The dust protection device for a hydrogen cylinder port according to claim 1, characterized by: The elastic cover (1) includes a top cover (11), a first ring side wall (12), and a second ring side wall (13); the first ring side wall (12) and the second ring side wall (13) are oppositely arranged at both ends of the top cover (11); the air hole (3) penetrates through the top cover (11); and the air hole (3) is in communication between the first ring side wall (12) and the second ring side wall (13).

3. The dust protection device for a hydrogen cylinder port according to claim 2, characterized by: The inner diameter of the first ring side wall (12) is smaller than the inner diameter of the second ring side wall (13).

4. The dust protection device for a hydrogen cylinder port according to claim 3, characterized by: One end of the elastic plug body (2) is embedded in the air hole (3); the other end of the elastic plug body (2) is connected to the first ring side wall (12) through an elastic string (4).

5. The dust protection device for a hydrogen cylinder port according to claim 3, characterized by: One end of the elastic plug body (2) is embedded in the air hole (3); the other end of the elastic plug body (2) is connected to the second ring side wall (13) through an elastic string (4).

6. The dust protection device for a hydrogen cylinder port according to any one of claims 3 to 4, characterized by: The elastic plug body (2) is a conical plug body; the conical plug body has a tapered end embedded in the air hole (3) and an extended elastic suction cup (5); and the opening end of the elastic suction cup (5) faces the top cover (11).

7. The dust protection device for a hydrogen cylinder port according to claim 6, characterized by: The conical plug body is externally provided with a stop ring (6).

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