Hydrogenation equipment connecting pipe with quick connector

Abstract

The utility model discloses a hydrogenation equipment connecting pipe with a quick connector, and relates to the technical field of fluid conveying. Comprising a hydrogenation equipment connecting pipe body, a 360-degree multidirectional rotating ball and a metal corrugated pipe. The front end of the hydrogenation equipment connecting pipe body is connected with the 360-degree multidirectional rotating ball through the steering connecting block, the rotating ball can freely adjust the direction of a pipeline, the installation flexibility is improved, quick connection and disassembly are achieved in cooperation with an elastic knob, tool assistance is not needed, and the hydrogenation equipment connecting pipe is suitable for the working condition of high-frequency replacement or maintenance. The metal corrugated pipe is arranged on the pipeline body, the first sealing ring is installed between the metal corrugated pipe and the pipeline body, and the corrugated pipe can deform when encountering pressure impact or vibration, so that stress concentration is effectively buffered, the fatigue cracking risk of the pipeline is reduced, and the service life is prolonged. In addition, the sealing gasket is fixed through a steel wire, a locking buckle is arranged, and the sealing stability is enhanced. The structure optimizes the sealing performance, the anti-seismic performance and the operation convenience of the pipeline, and is suitable for a high-pressure conveying system of hydrogenation equipment.

Description

Technical Field

[0001] This utility model relates to the field of fluid transport technology, and specifically discloses a connecting pipe for a hydrogen refueling device with a quick-connect interface. Background Technology

[0002] Hydrogen refueling equipment connection pipes are widely used in hydrogen transportation, storage, and hydrogen refueling stations. Their main function is to ensure the safe transport of hydrogen under high pressure conditions. Due to the flammability, explosiveness, small molecular radius, and high permeability of hydrogen, hydrogen refueling equipment connection pipes need to possess high sealing performance, high pressure resistance, and excellent corrosion resistance to prevent leakage and ensure long-term stable operation. A search of existing patents did not find any patents specifically addressing hydrogen refueling equipment connection pipes. Existing hydrogen refueling equipment connection pipes have the following drawbacks:

[0003] 1. Existing threaded or flanged connections usually require tools for tightening or disassembly, which is time-consuming and inconvenient, making it difficult to meet the needs of high-frequency and rapid connections. Therefore, there is an urgent need for a device that can quickly interface.

[0004] 2. Existing rigid connecting pipes are prone to local stress concentration when subjected to pressure impact or external force. Long-term use may lead to fatigue cracking of the pipes, affecting their service life. Therefore, there is an urgent need for a device that can effectively control cracking. Utility Model Content

[0005] The main objective of this invention is to provide a connecting pipe for hydrogen refueling equipment with a quick-connect interface, which can effectively solve the problems in the background art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a hydrogen refueling equipment connecting pipe with a quick interface, comprising a hydrogen refueling equipment connecting pipe body, a 360-degree multi-directional rotating ball, and a metal bellows. A steering connecting block is installed in front of the hydrogen refueling equipment connecting pipe body, and a 360-degree multi-directional rotating ball is installed in front of the steering connecting block. A metal bellows is installed on the hydrogen refueling equipment connecting pipe body, and a first sealing ring is installed between the metal bellows and the hydrogen refueling equipment connecting pipe body.

[0007] Preferably, a tension knob is installed in front of the connecting pipe body of the hydrogenation equipment.

[0008] Preferably, a sealing gasket is installed between the hydrogenation equipment connecting pipe body and the tightening / loosening knob.

[0009] Preferably, the sealing gasket is fixed with steel wire.

[0010] Preferably, the steel wire is equipped with a locking buckle.

[0011] Preferably, a second sealing ring is installed between the hydrogenation equipment connecting pipe body and the 360-degree multi-directional rotating ball.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. This utility model employs a 360-degree multi-directional rotating ball and a tension knob structure, enabling rapid insertion and removal of the hydrogen refueling equipment's connecting pipes without the need for additional tools, thus improving installation and disassembly efficiency. The rotating ball structure allows the pipe to be freely adjusted at different angles, avoiding the need to adjust the pipe direction required by traditional rigid pipes and reducing assembly time. Adjusting the tension knob allows for quick locking or releasing of the connection, making it suitable for high-frequency replacement or maintenance conditions and significantly improving operational convenience.

[0014] 2. This utility model incorporates a metal bellows on the connecting pipe body of the hydrogenation equipment. This bellows deforms upon encountering pressure shocks or vibrations, thereby buffering pressure fluctuations and preventing stress concentration. This structure effectively reduces the impact of external vibrations on the pipeline, lowering the risk of seal failure or structural damage due to long-term vibration and extending its service life. Because the bellows absorbs axial displacement changes caused by thermal expansion and contraction, the pipeline maintains a stable connection even in environments with significant temperature variations, preventing fatigue damage caused by temperature differences. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present utility model. Figure 1 ;

[0016] Figure 2 This is a schematic diagram of the overall structure of the present utility model. Figure 2 ;

[0017] In the diagram: 1. Hydrogenation equipment connecting pipe body; 2. Metal bellows; 3. Tightening knob; 4. Rotating connecting block; 5. Locking buckle; 6. Steel wire; 7. Sealing gasket; 8. 360-degree multi-directional rotating ball; 9. Second sealing ring; 10. First sealing ring. Detailed Implementation

[0018] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0019] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" 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 "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] Example

[0022] Please see Figure 1-2 This utility model provides a technical solution:

[0023] A hydrogen refueling equipment connecting pipe with a quick-connect interface includes a hydrogen refueling equipment connecting pipe body, a 360-degree multi-directional rotating ball, and a metal bellows. A steering connecting block is installed at the front of the hydrogen refueling equipment connecting pipe body, and the 360-degree multi-directional rotating ball is installed at the front of the steering connecting block. The metal bellows is installed on the hydrogen refueling equipment connecting pipe body, and a first sealing ring is installed between the metal bellows and the hydrogen refueling equipment connecting pipe body. A tension knob is installed at the front of the hydrogen refueling equipment connecting pipe body, and a sealing gasket is installed between the hydrogen refueling equipment connecting pipe body and the tension knob. The sealing gasket is fixed with a steel wire, and a locking buckle is installed on the steel wire. A second sealing ring is installed between the hydrogen refueling equipment connecting pipe body and the 360-degree multi-directional rotating ball.

[0024] It should be noted that the 360-degree multi-directional rotating ball and tightening knob structure enables quick plug-in connections, improving installation and disassembly efficiency. Traditional hydrogen refueling equipment connecting pipes use threaded or flanged connections, which are cumbersome to install and disassemble, requiring tools and failing to meet the high-frequency, rapid connection requirements. This invention, through its 360-degree multi-directional rotating ball and tightening knob structure, enables quick plug-in connections without additional tools, significantly improving operational convenience. The 360-degree multi-directional rotating ball connects to the hydrogen refueling equipment connecting pipe body via a steering connection block. This rotating ball structure allows the pipe to rotate freely at different 360-degree angles, avoiding twisting or mismatch problems caused by the 360-degree limitation of the pipe installation angle, thus improving installation flexibility.

[0025] The tightening knob is installed at the front end of the connecting pipe body of the hydrogenation equipment and works in conjunction with the sealing gasket. When the knob is tightened, the sealing gasket is compressed, ensuring the seal at the interface and providing a quick locking connection. When the knob is loosened, the sealing gasket springs back, allowing the connecting pipe to release quickly, achieving convenient assembly and disassembly. The sealing gasket is fixed with steel wire to ensure that it will not shift or fall off during long-term use, improving the stability of the seal.

[0026] An externally mounted locking buckle on the steel wire provides additional securing force when the tightening / loosening knob is turned, preventing loosening and improving interface stability and sealing. This structure makes the installation and disassembly of the connecting pipe more efficient, requiring no additional tools; connection and unlocking can be quickly completed simply by adjusting the knob, making it particularly suitable for applications requiring frequent replacement or maintenance. The rotating ball design allows for 360-degree multi-angle connections, reducing installation errors, preventing uneven stress on the pipe, and improving system reliability. The combination of the tightening / loosening knob and the sealing gasket ensures the airtightness of the connection during high-pressure hydrogen transportation, effectively preventing leakage and improving safety.

[0027] This invention employs a metal bellows structure to absorb pressure shocks and vibrations, prevent stress concentration, and extend pipeline lifespan. Traditional rigid hydrogen refueling connection pipes, when encountering high-pressure hydrogen flow, experience localized stress concentrations due to pressure fluctuations or external vibrations. Long-term use may lead to fatigue cracking, affecting the pipeline's lifespan. This invention, through the installation of a metal bellows, allows the pipeline to deform under external forces or pressure changes, thereby buffering pressure shocks, reducing stress concentration, and improving pipeline stability and durability. The metal bellows connects to the hydrogen refueling equipment connection pipe body via a first sealing ring. This sealing ring not only ensures airtightness but also provides a certain degree of elastic buffering, allowing the bellows to expand and contract normally under different pressure environments. The bellows structure of the metal bellows deforms under pressure shocks or external vibrations, effectively absorbing the impact force from pressure changes, avoiding stress concentration, and improving pipeline durability. The bellows structure also allows the pipeline to adapt to different 360-degree changes in length under thermal expansion and contraction, making it particularly suitable for applications with large temperature differences, preventing pipeline damage caused by 360-degree temperature variations. Because of its flexibility, the corrugated pipe can effectively reduce the impact of external mechanical vibration on the pipeline and improve the seismic performance of the entire hydrogen refueling system.

[0028] This design effectively buffers pressure fluctuations during hydrogen transportation, reducing the risk of pipeline cracking due to pressure shocks and significantly improving the service life of the connecting pipes. The use of sealing rings ensures a stable connection between the bellows and the pipeline body, preventing leaks at the joints due to long-term vibration. This structure also reduces the impact of external vibrations on the pipeline, enabling the hydrogen refueling equipment to maintain efficient operation even in harsh environments and improving the overall reliability of the system.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A hydrogenation equipment connecting pipe with quick interface, comprising a hydrogenation equipment connecting pipe body (1), a 360-degree multi-orientation rotating ball (8), and a metal bellows (2), characterized in that: The hydrogenation equipment connecting pipe body (1) is provided with a steering connecting block (4) in front, the steering connecting block (4) is provided with a 360-degree multi-directional rotating ball (8) in front, a metal bellow (2) is installed on the hydrogenation equipment connecting pipe body (1), and a first sealing ring (10) is installed between the metal bellow (2) and the hydrogenation equipment connecting pipe body (1).

2. A hydrogenation equipment connection pipe with a quick interface according to claim 1, characterized in that: The hydrogenation equipment connecting pipe body (1) is provided with a tension knob (3) in front.

3. The hydrogenation equipment connection pipe with a quick interface according to claim 1, characterized in that: A sealing gasket (7) is installed between the hydrogenation equipment connecting pipe body (1) and the tension knob (3).

4. The hydrogenation equipment connection pipe with a quick interface according to claim 3, characterized in that: A steel wire (6) is arranged on the sealing gasket (7) for fixing.

5. A hydrogenation equipment connection pipe with a quick interface according to claim 4, characterized in that: A locking buckle (5) is installed on the steel wire (6).

6. The hydrogenation equipment connection pipe with quick interface according to claim 1, characterized in that: A second sealing ring (9) is installed between the hydrogenation equipment connecting pipe body (1) and the 360-degree multi-directional rotating ball (8).

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