Hydrogen filling hose connecting structure

Abstract

The hydrogen filling hose connecting structure comprises a gas valve arranged at the exhaust position of a gas tank, a connecting pipe is mounted on the side wall of the gas valve, a mounting seat and a sealing part are mounted at the end, away from the gas valve, of the connecting pipe, the mounting seat can be screwed into a mounting head, the mounting head movably sleeves the outer wall of a hose, and a limiting piece is fixedly mounted on the outer wall of the hose; the hose tightening device has the advantages that the mounting seat is gradually screwed into the mounting head until the clamping pipe completely enters the tightening pipe and is tightened by the tightening pipe, and at the moment, the hose is locked at a designated position by the collected clamping pipe; when the installation head and the installation seat are not fully screwed, leaked gas reaches the sealing gasket through the threaded connection gap between the nut and the threaded pipe, enters the inner cavity of the sealing gasket through the gas hole in the inner wall of the sealing gasket and then continuously fills the gas bag through the gas guide pipe to enable the gas bag to expand, and it is indicated that the gas bag is in a leakage state at the moment. And the user needs to recheck the connection part so as to ensure the long-term stable operation and safety of the system.

Description

Technical Field

[0001] The present application relates to the technical field of hose connection, and in particular to a hydrogen filling hose connection structure. Background Art

[0002] In modern industry, especially in the field of hydrogen energy application, hydrogen filling hoses play a vital role; hydrogen filling stations use specially designed filling hoses to connect fixed facilities with mobile pressure vessels for the transmission and storage of hydrogen; this dedicated hydrogen filling hose is composed of durable body materials and connectors at both ends. These connectors are designed to ensure that the hose can be safely and tightly connected to the hydrogen filling station and mobile pressure vessels, thereby achieving an efficient hydrogen delivery process.

[0003] Although in many application scenarios, people generally use threaded connections, clamp fixation or quick connectors to achieve convenient installation and disassembly of pipes or components. These methods undoubtedly improve work efficiency and make the assembly and disassembly process simple and quick; however, a potential problem with this method is that when the joints fail to achieve sufficient tightness during installation, these connection parts may gradually loosen over time and with repeated use. This loosening may not only reduce the stability of the connection, but also bring the risk of air leakage, especially in systems that need to maintain sealing performance, such as gas transmission pipelines or pressure vessels.

[0004] Therefore, in order to solve the above problems, the present application provides a hydrogen filling hose connection structure.

[0005] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0006] In order to solve the problem raised in the above background technology that when the joints fail to achieve sufficient tightness during the installation process, these connection parts may gradually become loose over time and with repeated use, and this loosening may not only lead to reduced stability of the connection but also bring the risk of air leakage, the present application provides a hydrogen filling hose connection structure.

[0007] The present application provides a hydrogen filling hose connection structure, including a gas valve arranged at the exhaust of a gas tank, a connecting pipe installed on the side wall of the gas valve, a mounting seat and a sealing portion installed on the end of the connecting pipe away from the gas valve, the mounting seat can be screwed into a mounting head, the mounting head is movably sleeved on the outer wall of the hose, and a limiting plate is fixedly installed on the outer wall of the hose.

[0008] Preferably, the sealing part includes a sealing pad, an air duct, an air bag and air holes, wherein the sealing pad is fixedly mounted on the connecting tube, and the sealing pad is provided with a plurality of air holes communicating with its inner cavity, the air bag is symmetrically mounted on the side wall of the sealing pad through the air duct, and the air bag, the air duct and the interior of the sealing pad are connected.

[0009] Preferably, the mounting seat comprises a threaded tube and a clamping tube, wherein the threaded tube is fixedly mounted on a side wall of one end of the sealing gasket away from the connecting tube, and the clamping tube is integrally injection-molded at the end of the threaded tube.

[0010] Preferably, the mounting head comprises a nut and a tightening tube, wherein the nut and the tightening tube are integrally injection-molded, and the nut and the tightening tube are movably sleeved on the outer wall of the hose.

[0011] Preferably, the side wall of the sealing gasket is provided with a through hole for the hose to pass through, and the connection is sealed.

[0012] Preferably, the hose is provided with a groove for tightening the end of the hose for movable clamping.

[0013] In summary, this application includes the following beneficial technical effects:

[0014] The mounting seat is gradually screwed into the mounting head until the clamping tube completely enters the tightening tube and is tightened by the tightening tube. At this time, the hose is locked in the specified position by the tightened clamping tube; when the mounting head and the mounting seat are not fully tightened, the leaked gas reaches the sealing gasket through the threaded connection gap between the nut and the threaded tube, and enters the inner cavity of the sealing gasket through the air holes on the inner wall of the sealing gasket, and then continuously fills the airbag through the air guide tube, causing the airbag to expand, indicating that it is a leakage state at this time. The user needs to re-inspect the connection to ensure the long-term stable operation and safety of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure in Example 1 of the present application;

[0016] Figure 2 It is a schematic diagram of the overall structure and its partial cross-section in Example 1 of the present application;

[0017] Figure 3 It is the embodiment of the present application Figure 2 Schematic diagram of the structure at A in the middle;

[0018] Explanation of the reference numerals: 1. air valve; 2. connecting pipe; 3. mounting seat; 301. threaded pipe; 302. clamping tube; 4. sealing part; 401. sealing gasket; 402. air guide tube; 403. air bag; 404. air hole; 5. mounting head; 501. nut; 502. tightening tube; 6. hose; 601. groove; 7. limit plate. DETAILED DESCRIPTION

[0019] The following is combined with Figure 1-Figure 3 This application is described in further detail.

[0020] Example 1: Reference Figure 1-Figure 3 A hydrogen filling hose connection structure includes a gas valve 1 arranged at the exhaust position of the gas tank, a connecting pipe 2 is installed on the side wall of the gas valve 1, a mounting seat 3 and a sealing portion 4 are installed on the end of the connecting pipe 2 away from the gas valve 1, the mounting seat 3 can be screwed into the mounting head 5, the mounting head 5 is movably connected to the outer wall of the hose 6, and a limiting plate 7 is fixedly installed on the outer wall of the hose 6.

[0021] The sealing portion 4 includes a sealing pad 401, an air duct 402, an air bag 403 and air holes 404, wherein the sealing pad 401 is fixedly mounted on the connecting tube 2, and the sealing pad 401 is provided with a plurality of air holes 404 communicating with its inner cavity, the air bag 403 is symmetrically mounted on the side wall of the sealing pad 401 through the air duct 402, and the air bag 403, the air duct 402 and the interior of the sealing pad 401 are communicated.

[0022] The mounting seat 3 includes a threaded tube 301 and a clamping tube 302 , wherein the threaded tube 301 is fixedly mounted on a side wall of the sealing gasket 401 away from the connecting tube 2 , and the clamping tube 302 is integrally injection-molded at the end of the threaded tube 301 .

[0023] The mounting head 5 includes a nut 501 and a tightening tube 502 , wherein the nut 501 and the tightening tube 502 are integrally injection-molded, and the nut 501 and the tightening tube 502 are movably sleeved on the outer wall of the hose 6 .

[0024] The side wall of the sealing gasket 401 is provided with a through hole for the hose 6 to pass through, and the connection is sealed.

[0025] The hose 6 is provided with a groove 601 for tightening the end of the tube 502 to be movably engaged.

[0026] The implementation principle of a hydrogen filling hose connection structure in the embodiment of the present application is:

[0027] Installation process: the user holds the installation head 5 with his hands or auxiliary tools, and keeps moving it closer to one side of the mounting seat 3. When the nut 501 touches the clamping tube 302, the flexible hose 6 in the tightening tube 502 has passed through the mounting seat 3 and inserted into the connecting tube 2. As the nut 501 is continuously tightened toward the surface of the threaded tube 301, the mounting seat 3 is gradually screwed into the installation head 5 until the clamping tube 302 completely enters the tightening tube 502 and is tightened by the tightening tube 502. At this time, the flexible hose 6 is locked in the designated position by the clamping tube 302.

[0028] When the mounting head 5 and the mounting base 3 are not fully tightened, the hydrogen provided by the connecting tube 2 can leak out through the gap between the clamping tube 302 and the outer wall of the hose 6. The leaked gas reaches the sealing gasket 401 through the threaded connection gap between the nut 501 and the threaded tube 301, and enters the inner cavity of the sealing gasket 401 through the air hole 404 on the inner wall of the sealing gasket 401, and then continuously fills the airbag 403 through the air guide tube 402, causing the airbag 403 to expand, indicating that it is in a leakage state and the user needs to recheck the connection.

[0029] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0030] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0031] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

[0032] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A hydrogen filling hose connection structure, comprising a gas valve (1) arranged at the exhaust position of a gas tank, characterized in that: A connecting pipe (2) is installed on the side wall of the air valve (1); a mounting seat (3) and a sealing portion (4) are installed on one end of the connecting pipe (2) away from the air valve (1); the mounting seat (3) can be screwed into a mounting head (5); the mounting head (5) is movably sleeved on the outer wall of the hose (6); and a limiting plate (7) is fixedly installed on the outer wall of the hose (6).

2. A hydrogen filling hose connection structure according to claim 1, characterized in that: The sealing portion (4) comprises a sealing pad (401), an air guide tube (402), an air bag (403) and air holes (404), wherein the sealing pad (401) is fixedly mounted on the connecting tube (2), and the sealing pad (401) is provided with a plurality of air holes (404) which are in communication with its inner cavity, and the air bag (403) is symmetrically mounted on the side wall of the sealing pad (401) via the air guide tube (402), and the air bag (403), the air guide tube (402) and the interior of the sealing pad (401) are in communication.

3. A hydrogen filling hose connection structure according to claim 2, characterized in that: The mounting seat (3) comprises a threaded tube (301) and a clamping tube (302), wherein the threaded tube (301) is fixedly mounted on a side wall of the sealing gasket (401) at one end away from the connecting tube (2), and the clamping tube (302) is integrally injection-molded at the end of the threaded tube (301).

4. A hydrogen filling hose connection structure according to claim 1, characterized in that: The mounting head (5) comprises a nut (501) and a tightening tube (502), wherein the nut (501) and the tightening tube (502) are integrally injection-molded, and the nut (501) and the tightening tube (502) are movably sleeved on the outer wall of the hose (6).

5. A hydrogen filling hose connection structure according to claim 2, characterized in that: The side wall of the sealing pad (401) is provided with a through hole for the hose (6) to pass through, and the connection is sealed.

6. A hydrogen filling hose connection structure according to claim 5, characterized in that: The hose (6) is provided with a groove (601) for tightening the end of the tube (502) for movable clamping.

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