Leakage-proof connecting pipe for gas safety

Abstract

The utility model belongs to the technical field of fuel gas connecting pipes, and particularly relates to a leakage-proof connecting pipe for fuel gas safety, which comprises an outer pipe and a fuel gas connecting pipe, an extension pipe is integrally formed at the end part of the outer pipe, the fuel gas connecting pipe is matched on the inner wall of the extension pipe, and a sealing part is arranged between the fuel gas connecting pipe and the extension pipe. The sealing component comprises a locking ring connected to the extension pipe in a threaded mode, and a universal ball is rotationally connected to a groove formed in one side of the locking ring. The universal balls are arranged on the sealing component and make contact with one side of the sealing block, friction force generated when the locking ring rotates can be reduced, the sealing gasket on one side of the sealing block is tightly closed in the special-shaped groove of the extension pipe, meanwhile, the protective cover is arranged on the outer side of the sealing component, and the safety protection effect can be achieved; the problems that at the present stage, a device is not good enough in tightness and poor in safety protection effect are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas connecting pipes, in particular to a leak-proof connecting pipe for gas safety. Background Art

[0002] Gas pipelines are facilities responsible for transporting gas. Connecting pipes are usually used to connect two sections of gas pipelines, mainly to connect two gas pipelines that need to be docked. Flange connections, compression connections, clamp connections, etc. are often used between the connecting pipe and the outer pipe. When compression connections are used to connect pipelines, the sealing block is driven to move by a rotating annular body, thereby achieving sealing at the pipe connection. However, there are the following disadvantages in actual use.

[0003] Firstly, when the rotating annular body moves, one side of the annular body is in direct contact with the sealing block, and the friction between the annular body and the sealing block is relatively large. When the sealing block is sealed at the pipe connection, the friction is not conducive to the further movement of the sealing block. On the one hand, the operation is difficult, and on the other hand, the sealing effect is reduced, and the sealing effect of a single sealing block is not good enough. At the same time, the outer side of the pipe connection lacks a protective mechanism and is easily affected by factors such as impact from foreign objects and rain, and is then easily corroded. There are certain defects and deficiencies, and therefore improvements are needed. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a leak-proof connecting pipe for gas safety. By arranging a universal ball on the sealing component, the universal ball contacts one side of the sealing block, which can reduce the friction force when the locking ring rotates, so that the sealing gasket on one side of the sealing block is tightly closed in the special-shaped groove of the extension tube. At the same time, a protective cover is arranged on the outside of the sealing component, which can play a safety protection effect, thus solving the problem that the current device is not tight enough and the safety protection effect is poor.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0008] A leak-proof connecting pipe for gas safety comprises an outer pipe and a gas connecting pipe, an extension pipe is integrally formed at the end of the outer pipe, the gas connecting pipe is adapted to the inner wall of the extension pipe, and a sealing component is arranged between the gas connecting pipe and the extension pipe, the sealing component comprises a locking ring threadedly connected to the extension pipe, a universal ball is rotatably connected to a groove provided on one side of the locking ring, a special-shaped groove penetrating to the outside is provided on one side of the extension pipe, and an leak-proof sealing structure is arranged at the special-shaped groove of the extension pipe, the leak-proof sealing structure comprises a sealing block sleeved on the outer wall of the gas connecting pipe, and a sealing gasket sleeved on the groove body on one side of the sealing block, the sealing gasket is adapted to the special-shaped groove of the extension pipe, and the universal ball is abutted against one side of the sealing block.

[0009] Furthermore, an internal thread is provided on the inner wall of the locking ring, and the internal thread is adapted to the external thread provided on the extension tube.

[0010] Furthermore, an anti-slip protrusion is arranged on the outer wall of the locking ring.

[0011] Furthermore, a sealing ring is provided at the connection between the end of the outer tube and the locking ring.

[0012] Furthermore, a stop ring is integrally formed on one side of the outer tube close to the gas connecting pipe, a protective cover is abutted on one side of the stop ring, the protective cover is arranged on the outside of the sealing component, and a protective plate is threadedly connected to one side of the protective cover, and the protective plate is sleeved on the outer wall of the gas connecting pipe.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the utility model provides a leak-proof connecting pipe for gas safety, which has the following beneficial effects:

[0015] 1. The utility model provides a universal ball on one side of a locking ring in a sealing component, and a sealing gasket on the groove body on one side of a sealing block, and the sealing gasket fits in the special-shaped groove of the extension tube. When the locking ring is rotated, the universal ball on one side of the locking ring contacts one side of the sealing block. When the sealing block and the sealing gasket move to the special-shaped groove of the extension tube, the friction force during the rotation of the locking ring can be reduced due to the presence of the universal ball, and the resistance is reduced. Therefore, it is easier to move the friction pad to a deeper position, which can ensure the sealing performance and make the operation more convenient. By providing a sealing gasket on one side of the sealing block, the sealing gasket can ensure the sealing effect and airtightness. By providing a sealing ring at the connection between the end of the outer tube and the locking ring, a secondary protection effect can be achieved.

[0016] 2. The utility model provides a stop ring on the outer tube, and the setting of the stop ring can realize the installation of the protective cover. The protective cover is arranged on the outside of the sealing component, and a protective plate is threadedly connected to one side of the protective cover, which can realize the protection of the sealing component, avoid the influence of rainwater and the like, avoid rust, and at the same time prevent the impact and collision of foreign objects, and the use effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a cross-sectional schematic diagram of the utility model;

[0018] Figure 2 It is a cross-sectional schematic diagram of the sealing component in the utility model;

[0019] Figure 3 It is a cross-sectional schematic diagram of the anti-leakage sealing structure in the utility model.

[0020] In the figure: 1. outer tube; 2. stop ring; 3. protective cover; 4. sealing component; 401. locking ring; 402. anti-slip protrusion; 403. internal thread; 404. universal ball; 5. protective plate; 6. gas connecting pipe; 7. anti-leakage sealing structure; 701. sealing block; 702. trough body; 703. sealing gasket; 8. extension tube; 9. sealing ring. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example

[0023] like Figure 1 , Figure 2 and Figure 3As shown, an embodiment of the utility model provides a leak-proof connecting pipe for gas safety, comprising an outer pipe 1 and a gas connecting pipe 6, an extension pipe 8 is integrally formed at the end of the outer pipe 1, the gas connecting pipe 6 is adapted to the inner wall of the extension pipe 8, and a sealing component 4 is arranged between the gas connecting pipe 6 and the extension pipe 8, the sealing component 4 comprises a locking ring 401 threadedly connected to the extension pipe 8, a universal ball 404 is rotatably connected to a groove opened on one side of the locking ring 401, a special-shaped groove penetrating to the outside is opened on one side of the extension pipe 8, and an anti-leakage sealing structure 7 is arranged at the special-shaped groove of the extension pipe 8, the anti-leakage sealing structure 7 comprises a sealing block 701 sleeved on the outer wall of the gas connecting pipe 6, and a sealing gasket 703 sleeved on a groove body 702 on one side of the sealing block 701, the sealing gasket 703 is adapted to the special-shaped groove of the extension pipe 8, and the universal ball 404 is against one side of the sealing block 701.

[0024] It should be noted that, by arranging an extension tube 8 at the end of the outer tube 1, the arrangement of the extension tube 8 can realize the connection between the outer tube 1 and the gas connecting tube 6, and a groove is arranged on the inner wall of the extension tube 8. One end of the gas connecting tube 6 abuts against the groove of the extension tube 8 to realize the abutment between the outer tube 1 and the gas connecting tube 6, and perform preliminary limiting. By arranging a sealing component 4 at the connection between the outer tube 1 and the gas connecting tube 6, the sealing component 4 can realize the fixing effect between the end of the gas connecting tube 6 and the outer tube 1, and the locking ring 401 in the sealing component 4 is rotatably connected to the outer wall of the extension tube 8, and A leak-proof sealing structure 7 is provided at the special-shaped groove of the extension tube 8. The leak-proof sealing structure 7 consists of a sealing block 701 and a sealing gasket 703. When the locking ring 401 rotates, the universal ball 404 on one side thereof contacts the sealing block 701, thereby closing the sealing block 701 and the sealing gasket 703 at the special-shaped groove of the extension tube 8 to seal the outer tube 1 and the gas connecting tube 6. Due to the presence of the universal ball 404, the friction between the locking ring 401 and the sealing block 701 can be effectively reduced, and the resistance is significantly reduced, thereby facilitating the movement of the sealing block 701 and the sealing gasket 703.

[0025] like Figure 1 and Figure 2 As shown, in some embodiments, an internal thread 403 is provided on the inner wall of the locking ring 401 , and the internal thread 403 is adapted to the external thread provided on the extension tube 8 .

[0026] It should be noted that this method can realize the threaded connection of the locking ring 401 on the extension tube 8, and can move while rotating.

[0027] like Figure 2 As shown, in some embodiments, an anti-slip protrusion 402 is provided on the outer wall of the locking ring 401 .

[0028] It should be noted that the provision of the anti-slip protrusion 402 facilitates the rotation operation of the locking ring 401 .

[0029] like Figure 1 As shown, in some embodiments, a sealing ring 9 is provided at the connection between the end of the outer tube 1 and the locking ring 401 .

[0030] It should be noted that the provision of the sealing ring 9 can further increase the tightness of the connection between the outer tube 1 and the gas connecting tube 6 to prevent gas leakage.

[0031] like Figure 1 As shown, in some embodiments, a stop ring 2 is integrally formed on one side of the outer tube 1 close to the gas connecting pipe 6, a protective cover 3 is abutted on one side of the stop ring 2, the protective cover 3 is arranged on the outside of the sealing component 4, and a protective plate 5 is threadedly connected to one side of the protective cover 3, and the protective plate 5 is sleeved on the outer wall of the gas connecting pipe 6.

[0032] It should be noted that the setting of the protective cover 3 can achieve the protective effect of the sealing component 4. By setting the stop ring 2 on the outer tube 1, the setting of the stop ring 2 is convenient for the installation of the protective cover 3. During assembly, one side of the protective cover 3 abuts against the stop ring 2, and then the protective plate 5 is sleeved on the gas connecting pipe 6. The protective plate 5 is moved and threadedly connected to the end of the protective cover 3. This method can achieve effective protection of the sealing component 4 and extend the service life.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A gas safety leak-proof connecting pipe, comprising an outer pipe (1) and a gas connecting pipe (6), characterized in that: An extension tube (8) is integrally formed at the end of the outer tube (1), the gas connection tube (6) is adapted to the inner wall of the extension tube (8), and a sealing component (4) is provided between the gas connection tube (6) and the extension tube (8), the sealing component (4) comprising a locking ring (401) threadedly connected to the extension tube (8), a universal ball (404) rotatably connected to a groove provided on one side of the locking ring (401), and a through-hole (404) provided on one side of the extension tube (8) The special-shaped groove is penetrated to the outside, and a leak-proof sealing structure (7) is provided at the special-shaped groove of the extension tube (8), wherein the leak-proof sealing structure (7) comprises a sealing block (701) sleeved on the outer wall of the gas connection tube (6), and a sealing gasket (703) sleeved on a groove body (702) on one side of the sealing block (701), the sealing gasket (703) is adapted to the special-shaped groove of the extension tube (8), and the universal ball (404) is against one side of the sealing block (701).

2. A gas safety anti-leakage connecting pipe according to claim 1, characterized in that: An internal thread (403) is provided on the inner wall of the locking ring (401), and the internal thread (403) is adapted to the external thread provided on the extension tube (8).

3. A gas safety leak-proof connecting pipe according to claim 1, characterized in that: An anti-slip protrusion (402) is provided on the outer wall of the locking ring (401).

4. A gas safety leak-proof connecting pipe according to claim 1, characterized in that: A sealing ring (9) is provided at the connection between the end of the outer tube (1) and the locking ring (401).

5. The gas safety anti-leakage connecting pipe according to claim 1, characterized in that: A stop ring (2) is integrally formed on one side of the outer tube (1) close to the gas connection pipe (6); a protective cover (3) is abutted on one side of the stop ring (2); the protective cover (3) is arranged on the outside of the sealing component (4); and a protective plate (5) is threadedly connected to one side of the protective cover (3); the protective plate (5) is sleeved on the outer wall of the gas connection pipe (6).

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