Anti-winding high pressure inflation line quick connector

Abstract

The utility model discloses a high pressure inflation pipeline quick -operation joint of anti -entanglement, including female joint and male joint, female joint and male joint inner wall all are fixedly connected with installation cylinder, female joint and male joint are connected in screw thread, female joint and male joint in respectively fixedly connected with first installation ring and second installation ring, and the side wall of first installation ring and second installation ring opposite is equipped with first sealing ring in common, female joint and male joint all are equipped with the connecting mechanism for connecting external pipeline in, the connecting mechanism includes the joint pipe of setting in female joint. The utility model sets up the connecting mechanism, and the joint pipe is rotatably connected with the connecting cylinder, and cooperates first rotary sealing ring, and both allow the joint pipe synchronous rotation with external pipeline ( avoid pipeline entanglement), and can keep high pressure seal in the rotating process, solve the entanglement problem caused by traditional rigid connection.

Description

Technical Field

[0001] This utility model relates to the field of high-pressure gas filling quick coupling technology, and in particular to a high-pressure gas filling pipeline quick coupling that prevents tangling. Background Technology

[0002] High-pressure gas filling pipeline quick connectors are core connectors in high-pressure gas transmission systems (such as hydrogen refueling for new energy vehicles, industrial high-pressure pneumatic equipment, and aerospace ground support). Their core function is to enable rapid connection and disconnection of high-pressure gas pipelines, while ensuring sealing safety under high-pressure conditions (typically ≥10MPa, and in some scenarios 30-100MPa) to prevent gas leakage and safety risks. They are key components supporting the efficient and safe operation of high-pressure gas operations.

[0003] While traditional quick couplings offer the advantage of "quick assembly and disassembly," they often employ a single O-ring seal, which is prone to deformation of the seal and cracking of the coupling body under high pressure, leading to gas leakage. Furthermore, they lack anti-tangling capabilities. Traditional couplings have a rigid connection between the pipe and the coupling; when the high-pressure inflation pipeline rotates due to equipment movement or operational adjustments, the pipes on both sides of the coupling are easily pulled and twisted, leading to tangling and knotting. This not only accelerates pipe wear and shortens service life but may also cause the coupling to shift under stress due to tangling, damaging the sealing structure and causing high-pressure gas leakage. To address these issues, this invention proposes an anti-tangling high-pressure inflation pipeline quick coupling. Utility Model Content

[0004] The main purpose of this invention is to provide a quick connector for high-pressure air-filling pipelines that prevents tangling, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A quick-connector for anti-tangling high-pressure gas filling pipeline includes a female connector and a male connector. An installation cylinder is fixedly connected to the inner wall of both the female and male connectors. The female and male connectors are threaded together. A first installation ring and a second installation ring are fixedly connected inside each of the female and male connectors. A first sealing ring is provided on the opposite sidewalls of the first and second installation rings. Each of the female and male connectors has a connecting mechanism for connecting to an external pipeline. The connecting mechanism includes a connector tube disposed within the female connector. A first rotating sealing ring is fitted onto the sidewall of the connector tube. A connecting cylinder is rotatably connected to the sidewall of the connector tube. Multiple screws penetrate the sidewall of the connecting cylinder. A first fixing ring and a second fixing ring are fixedly connected to the sidewalls of the female and male connectors, respectively. Multiple installation pieces are fixedly connected to the sidewall of the first fixing ring. The male connector has multiple constraint mechanisms for restraining the position of the installation pieces.

[0007] Preferably, the constraint mechanism includes a mounting block fixedly connected to the upper end of the male connector, a vertical rod fixedly connected to the upper end of the mounting block, an insert block sleeved on the upper end of the vertical rod, the lower end of the insert block being elastically connected to the upper end of the mounting block by a spring, and a through hole being opened on the upper end of the insert block.

[0008] Preferably, the side wall of the insert block has an inclined surface, and a toggle block is fixedly connected to the side wall of the insert block.

[0009] Preferably, a common ring is provided on multiple actuating blocks, and the inner wall of each actuating block is provided with an inclined surface.

[0010] Preferably, the side wall of the actuating block is fixedly connected with a first limiting ring and a second limiting ring, and the plurality of the insert blocks are arranged at equal intervals.

[0011] Preferably, the inner walls of both the female and male connectors are fixedly connected with support rings, and the opposite side walls of the two connector tubes are provided with multiple ball bearings.

[0012] Preferably, the connecting cylinder is provided with a second rotating sealing ring, and the plurality of screws are arranged at equal intervals.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. This device is equipped with a connection mechanism, in which the connector tube is rotatably connected to the connecting cylinder. With the help of the first rotating sealing ring, the connector tube is allowed to rotate synchronously with the external pipeline (to avoid pipeline entanglement), and a high-pressure seal is maintained during rotation, thus solving the entanglement problem caused by traditional rigid connections.

[0015] 2. This device is equipped with a constraint mechanism. Under the elastic action of the spring, the insert block is always located in the through groove of the mounting plate, which completes the positioning of the male and female connectors and further ensures high-pressure sealing. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the anti-tangle high-pressure air-filling pipeline quick connector proposed in this utility model.

[0017] Figure 2 for Figure 1 Enlarged view of the structure at point A;

[0018] Figure 3 This is a side view of the anti-tangling high-pressure air-filling pipeline quick connector proposed in this utility model;

[0019] Figure 4 This is another side view of the anti-tangling high-pressure air-filling pipeline quick connector proposed in this utility model.

[0020] Figure 5 for Figure 1 The front view.

[0021] In the diagram: 1. Female connector, 2. First fixing ring, 3. Second fixing ring, 4. Male connector, 5. Connector tube, 6. First sealing ring, 7. First mounting ring, 8. Second mounting ring, 9. Mounting plate, 10. Insert block, 11. Through hole, 12. Vertical rod, 13. Spring, 14. Mounting block, 15. Connecting cylinder, 16. Screw, 17. First rotating sealing ring, 18. Second rotating sealing ring, 19. Mounting cylinder, 20. Ball bearing, 21. Actuating block, 22. Actuating ring, 23. First limiting ring, 24. Second limiting ring, 25. Support ring. Detailed Implementation

[0022] 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.

[0023] like Figure 1-5 As shown, the anti-winding high-pressure air-filling pipeline quick connector includes a female connector 1 and a male connector 4. The inner walls of both the female connector 1 and the male connector 4 are fixedly connected with mounting cylinders 19. The female connector 1 and the male connector 4 are threaded together. The female connector 1 and the male connector 4 are respectively fixedly connected with a first mounting ring 7 and a second mounting ring 8. The opposite side walls of the first mounting ring 7 and the second mounting ring 8 are provided with a first sealing ring 6. The connector tube 5 has threads on the outer side walls of the female connector 1 and the male connector 4.

[0024] Both the female connector 1 and the male connector 4 are equipped with a connection mechanism for connecting external pipes. The connection mechanism includes a connector tube 5 installed in the female connector 1. A first rotary sealing ring 17 is sleeved on the side wall of the connector tube 5. A connecting cylinder 15 is rotatably connected to the side wall of the connector tube 5. Multiple screws 16 are provided through the side wall of the connecting cylinder 15. A first fixing ring 2 and a second fixing ring 3 are fixedly connected to the side walls of the female connector 1 and the male connector 4, respectively. Multiple mounting pieces 9 are fixedly connected to the side wall of the first fixing ring 2. A through groove is opened at the upper end of the mounting piece 9 (shown in the figure).

[0025] The male connector 4 is equipped with multiple constraint mechanisms for constraining the position of the mounting piece 9. The constraint mechanism includes a mounting block 14 fixedly connected to the upper end of the male connector 4. A vertical rod 12 is fixedly connected to the upper end of the mounting block 14. An insert block 10 is sleeved on the upper end of the vertical rod 12. The lower end of the insert block 10 is elastically connected to the upper end of the mounting block 14 through a spring 13. A through hole 11 is opened on the upper end of the insert block 10. The spring 13 provides an upward elastic force to the insert block 10. When the female connector 1 and the male connector 4 are mated, the insert block 10 can automatically extend into the through groove of the mounting piece 9. The position of the two can be completed without manual alignment, which greatly shortens the mating time. The vertical rod 12 limits the movement direction of the insert block 10 to prevent the insert block 10 from shifting and causing positioning failure.

[0026] In this invention, the side wall of the insert 10 is provided with an inclined surface, and a toggle block 21 is fixedly connected to the side wall of the insert 10. The inclined surface design of the insert 10 utilizes the "wedge principle". When the mounting piece 9 moves with the female connector 1 to the male connector 4, the mounting piece 9 can directly squeeze the inclined surface of the insert 10, pushing the insert 10 to automatically compress the spring 13 downwards. There is no need to manually press the insert 10, realizing a docking process without manual intervention. Especially in single-person operation or in confined space, it can significantly improve the ease of operation. The toggle block 21 provides a force point for the manual adjustment of the insert 10. When disassembly or adjustment is required, the insert 10 can be easily moved by the toggle block 21, avoiding slippage caused by direct contact with the insert 10.

[0027] In this invention, multiple actuating blocks 21 are provided with a common actuating ring 22. The inner wall of the actuating block 21 is provided with an inclined surface. The actuating ring 22 links the multiple actuating blocks 21 together. When the actuating ring 22 moves to the right, it can simultaneously squeeze the inclined surfaces of all the actuating blocks 21, causing the multiple inserts 10 to move downward synchronously. This avoids positioning deviations or time-consuming operations caused by adjusting individual inserts 10. Especially when the connector size is large and the number of inserts 10 is large, the disassembly time can be shortened by more than 50%. The inclined surface of the inner wall of the actuating block 21 cooperates with the actuating ring 22 to ensure that the force is even when the actuating ring 22 moves, and the actuating block 21 will not be damaged due to excessive local force, thus extending the service life of the component.

[0028] In this invention, a first limiting ring 23 and a second limiting ring 24 are fixedly connected to the side wall of the actuating block 21. Multiple insert blocks 10 are arranged at equal intervals. The first limiting ring 23 and the second limiting ring 24 form a "bidirectional limiting" to restrict the dial ring 22 between the two limiting rings, preventing the dial ring 22 from falling off the actuating block 21 during movement or transportation, thus ensuring the integrity of the component. The multiple insert blocks 10 are arranged at equal intervals to ensure that the positioning force in all directions is uniform when the female connector 1 and the male connector 4 are mated, avoiding connector misalignment due to excessively loose local positioning, and further improving the connection stability under high-voltage conditions.

[0029] In this invention, both the inner walls of the female connector 1 and the male connector 4 are fixedly connected with support rings 25. The side walls of the opposite ends of the two connector tubes 5 are provided with multiple balls 20. The support rings 25 support the opposite ends of the two connector tubes 5, preventing the connector tubes 5 from sagging due to gravity or gas impact under high pressure, ensuring that the connector tubes 5 are always in a coaxial state, and reducing friction during rotation. The balls 20 convert the sliding friction between the connector tubes 5 into rolling friction, greatly reducing rotational resistance, making the rotation of the connector tubes 5 smoother when the external pipe drives them, and reducing wear on the ends of the connector tubes 5.

[0030] In this invention, a second rotary sealing ring 18 is provided inside the connecting cylinder 15, and multiple screws 16 are equally spaced. The second rotary sealing ring 18 and the first rotary sealing ring 17 form a "double rotary seal", which not only seals between the connector tube 5 and the connecting cylinder 15, but also seals between the connecting cylinder 15 and the female connector 1 or the male connector 4, completely blocking the path of high-pressure gas leakage from the rotating part, and adapting to higher pressure working conditions (such as hydrogen filling ≥70MPa). The multiple screws 16 are equally spaced to ensure that the fixing force between the connecting cylinder 15 and the female connector 1 / male connector 4 is evenly distributed, avoiding the connecting cylinder 15 from tilting due to the loosening of some screws 16, which would affect the rotation accuracy of the connector tube 5.

[0031] When in use, after the external high-pressure pipeline is connected to the connector pipe 5 (fixed by the thread at the outer end of the connector pipe 5), if the external pipeline rotates due to equipment movement or operation adjustment, the external pipeline will drive the connector pipe 5 to rotate synchronously. When the connector pipe 5 rotates in the female connector 1 or male connector 4, the first rotating sealing ring 17 on its side wall is always tightly fitted with the inner wall of the connecting cylinder 15 to ensure that the high-pressure gas does not leak during the rotation. The connecting cylinder 15 is fixed in the female connector 1 / male connector 4 by screws 16 and does not rotate with the connector pipe 5, but only provides fixed support. At the same time, the ball bearings 20 at the opposite ends of the two connector pipes 5 reduce rotational friction, and the support ring 25 ensures that the connector pipe 5 does not deviate when rotating, so that the entire rotation process is smooth and stable.

[0032] When it is necessary to disassemble the male connector 4 and the female connector 1: the operator moves the dial ring 22 to the right, the inner wall of the dial ring 22 presses against the inclined surface of multiple actuating blocks 21 (using the wedge force principle), pushing multiple actuating blocks 21 to move synchronously towards the center of the male connector 4. The actuating blocks 21 drive the fixed insert block 10 to move downward along the vertical rod 12. The insert block 10 compresses the spring 13 and disengages from the through groove of the mounting plate 9, releasing the positioning constraint on the male connector 4 and the female connector 1. Then, the operator turns the male connector 4 counterclockwise. Because the female connector 1 and the male connector 4 are threaded, the male connector 4 is gradually unscrewed from the female connector 1, completing the disassembly. After disassembly, the dial ring 22 is released, the spring 13 returns to its deformation, and drives the insert block 10 and the actuating block 21 to reset.

[0033] When the male connector 4 needs to be connected to the female connector 1, the operator first manually presses multiple actuating blocks 21, causing the insert block 10 to move downward along the vertical rod 12 and compress the spring 13, so that the insert block 10 is in a "contracted state". Then, the male connector 4 is aligned with the female connector 1, and the male connector 4 is turned clockwise until the threads of the female connector 1 and the male connector 4 are fully engaged (at this time, the first mounting ring 7 and the second mounting ring 8 press the first sealing ring 6 tightly to form an initial seal). The actuating blocks 21 are released, the spring 13 releases its elastic potential energy, and causes the insert block 10 to move upward along the vertical rod 12 and automatically extend into the through groove of the mounting plate 9, completing the positioning of the male connector 4 and the female connector 1. At this time, the first sealing ring 6 is further compressed to ensure high-pressure sealing, and the connection process is completed.

[0034] 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 quick-connect coupling for high-pressure gas filling lines that prevents tangling, comprising a female connector (1) and a male connector (4), characterized in that, The inner walls of both the female connector (1) and the male connector (4) are fixedly connected with mounting sleeves (19). The female connector (1) and the male connector (4) are threaded together. A first mounting ring (7) and a second mounting ring (8) are fixedly connected inside the female connector (1) and the male connector (4), respectively. The opposite side walls of the first mounting ring (7) and the second mounting ring (8) are provided with a first sealing ring (6). Both the female connector (1) and the male connector (4) are provided with a connecting mechanism for connecting external pipes. The connecting mechanism includes a mechanism set inside the female connector (1). The connector tube (5) has a first rotating sealing ring (17) sleeved on its side wall. The connector tube (5) is rotatably connected to a connecting cylinder (15). The connecting cylinder (15) has multiple screws (16) penetrating through its side wall. The female connector (1) and the male connector (4) are respectively fixedly connected to a first fixing ring (2) and a second fixing ring (3). The first fixing ring (2) has multiple mounting pieces (9) fixedly connected to its side wall. The male connector (4) has multiple constraint mechanisms for constraining the position of the mounting pieces (9).

2. The anti-tangle high-pressure air-filling pipeline quick connector according to claim 1, characterized in that, The constraint mechanism includes a mounting block (14) fixedly connected to the upper end of the male connector (4). A vertical rod (12) is fixedly connected to the upper end of the mounting block (14). An insert (10) is sleeved on the upper end of the vertical rod (12). The lower end of the insert (10) is elastically connected to the upper end of the mounting block (14) through a spring (13). A through hole (11) is opened on the upper end of the insert (10).

3. The anti-tangle high-pressure air-filling pipeline quick connector according to claim 2, characterized in that, The side wall of the insert (10) is provided with an inclined surface, and a toggle block (21) is fixedly connected to the side wall of the insert (10).

4. The anti-tangle high-pressure air-filling pipeline quick connector according to claim 3, characterized in that, Multiple actuating blocks (21) are provided with a common actuating ring (22), and the inner wall of the actuating block (21) is provided with an inclined surface.

5. The anti-tangle high-pressure air-filling pipeline quick connector according to claim 4, characterized in that, The actuating block (21) has a first limiting ring (23) and a second limiting ring (24) fixedly connected to its side wall, and the multiple inserts (10) are arranged at equal intervals.

6. The anti-tangle high-pressure air-filling pipeline quick connector according to claim 5, characterized in that, The inner walls of the female connector (1) and the male connector (4) are both fixedly connected with support rings (25), and the side walls of the two connector tubes (5) at opposite ends are provided with multiple balls (20).

7. The anti-tangle high-pressure air-filling pipeline quick connector according to claim 1, characterized in that, The connecting cylinder (15) is provided with a second rotating sealing ring (18), and a plurality of screws (16) are arranged at equal intervals.

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