Leak-proof gas pipeline

Abstract

The utility model provides an anti-leakage gas pipeline. Comprising a first pipeline, a second pipeline, an inner diameter hole formed in the right end face of the first pipeline, and an outer diameter concave face arranged on the left end face of the second pipeline and in clearance fit with the inner diameter hole. The fixing device is arranged between the right end surface of the first pipeline and the left end surface of the second pipeline and is used for fixedly connecting the right end surface of the first pipeline with the left end surface of the second pipeline after the outer diameter concave surface is matched with the inner diameter hole; the inner ring sealing gasket is arranged on the right end face of the first pipeline, located on the left end face of the inner diameter hole and used for sealing a gap between the inner diameter hole and the outer diameter concave face after the right end face of the first pipeline and the left end face of the second pipeline are fixedly connected. The outer ring sealing gasket is arranged on the left end face of the second pipeline, located on the right end face of the outer diameter concave face and used for sealing a gap between the right end of the first pipeline and the left end of the second pipeline after the right end face of the first pipeline and the left end face of the second pipeline are fixedly connected.

Description

Technical Field

[0001] The utility model relates to the technical field of gas pipelines, in particular to a leakage-proof gas pipeline. Background Art

[0002] Gas is a general term for gaseous fuels that can burn and release heat for use by residents and industrial enterprises. There are many types of gas, mainly natural gas, artificial gas, liquefied petroleum gas, biogas, and coal-to-gas. Gas needs, and gas pipelines refer to pipelines that transport gas from mining sites or processing plants to urban gas distribution centers or industrial enterprise users, also known as gas transmission pipelines. Once a gas pipeline leaks and comes into contact with sparks, it will cause a serious explosion. Leakage protection of gas pipelines is the top priority of gas pipeline maintenance.

[0003] A gas pipeline is a pipeline system used to transport gas fuels such as natural gas or liquefied petroleum gas. It is an important facility that transports gas from the supply site to the user terminal for user use. During the pipeline laying process, it is usually necessary to connect two pipelines to extend its length.

[0004] When the overall length of the gas pipeline is insufficient, two gas pipelines need to be connected. However, when the two gas pipelines are connected, it is difficult to improve the sealing performance of the two gas pipelines after the connection, so that the connected gas pipelines are prone to leakage. Utility Model Content

[0005] The purpose of the utility model is to provide a leak-proof gas pipeline in view of the defects and shortcomings of the existing technology.

[0006] To achieve the above-mentioned objectives, the utility model adopts the following technical solutions: a leakage-proof gas pipeline, comprising a first pipeline and a second pipeline, an inner diameter hole opened on the right end face of the first pipeline, an outer diameter concave surface provided on the left end face of the second pipeline and gap-matched with the inner diameter hole, a fixing device provided between the right end face of the first pipeline and the left end face of the second pipeline for fixedly connecting the right end face of the first pipeline and the left end face of the second pipeline after the outer diameter concave surface matches the inner diameter hole, an inner ring sealing gasket provided on the right end face of the first pipeline and located on the left end face of the inner diameter hole for sealing the gap between the inner diameter hole and the outer diameter concave surface after the right end face of the first pipeline and the left end face of the second pipeline are fixedly connected, and an outer ring sealing gasket provided on the left end face of the second pipeline and located on the right end face of the outer diameter concave surface for sealing the gap between the right end of the first pipeline and the left end face of the second pipeline after the right end face of the first pipeline and the left end face of the second pipeline are fixedly connected.

[0007] Further improvements are: the fixing device includes a fixed ring plate arranged on the right end face of the first pipe, a fixed convex ring arranged on the left end face of the second pipe, a rotating ring plate rotatably arranged on the fixed convex ring, a rotating ring opening opened on the rotating ring plate for allowing the rotating ring plate and the fixed convex ring to fit in a clearance, a threaded ring platform arranged on the right end face of the fixed ring plate, and a threaded ring hole opened on the left end face of the rotating ring plate and threadedly connected to the threaded ring platform. The fixed ring plate is located on the circumferential side of the first pipe, and the fixed convex ring is located on the circumferential side of the second pipe.

[0008] A further improvement is that an auxiliary device for reducing the rotational resistance of the rotating ring plate on the fixed convex ring is provided between the rotating ring plate and the fixed convex ring.

[0009] A further improvement is that two arc grooves are respectively provided on the left and right sides of the fixed convex ring, and balls are respectively arranged on the left and right sides of the fixed convex ring and located in the arc grooves.

[0010] A further improvement is that a sliding ring groove for cooperating with the ball is provided on the rotating ring plate and is connected to the rotating ring opening, and the sliding ring groove corresponds to the position of the ball.

[0011] A further improvement is that the inner ring sealing gasket and the outer ring sealing gasket are both rubber gaskets or silicone gaskets.

[0012] After adopting the above technical solution, the beneficial effect of the utility model is as follows: when the overall length of the gas pipeline is insufficient, the outer diameter concave surface on the second pipeline is inserted into the inner diameter hole of the first pipeline until the first pipeline and the second pipeline abut against each other, and then the right end face of the first pipeline and the left end face of the second pipeline are fixedly connected by a fixing device, and the gap between the inner diameter hole and the outer diameter concave surface and the gap between the right end of the first pipeline and the left end of the second pipeline are sealed respectively by the inner ring sealing gasket and the outer ring sealing gasket, thereby improving the connection sealing between the first pipeline and the second pipeline, and the connected gas pipeline is not prone to leakage.

[0013] Further effect: when the first pipe and the second pipe need to be fixed, the right end of the first pipe and the left end of the second pipe are abutted against each other. At this time, the threaded ring platform and the threaded ring hole are initially matched. Then, the rotating ring plate is rotated on the fixed convex ring by hand, so that the threaded ring platform and the threaded ring hole are threadedly matched, thereby fixing the rotating ring plate and the fixed ring plate.

[0014] Further effect: when the rotating ring plate rotates on the fixed convex ring, the balls roll in the placement arc groove and the sliding ring groove, thereby reducing the rotation resistance of the rotating ring plate on the fixed convex ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0016] Figure 1 It is a cutaway view of the first pipeline in the present utility model;

[0017] Figure 2 It is a cutaway view of the second pipeline in the present utility model;

[0018] Figure 3 This is a schematic diagram of the connection between the first pipeline and the second pipeline in the present utility model;

[0019] Figure 4 It corresponds to Figure 3 Magnified view of part A.

[0020] Explanation of the reference numerals: first pipe 1, second pipe 2, inner diameter hole 3, outer diameter concave surface 4, inner ring sealing gasket 5, outer ring sealing gasket 6, fixed ring plate 7, fixed convex ring 8, rotating ring plate 9, rotating ring mouth 10, threaded ring platform 11, threaded ring hole 12, placement arc groove 13, ball 14, sliding ring groove 15. DETAILED DESCRIPTION

[0021] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0022] See Figures 1 to 4As shown, the technical solution adopted in this specific embodiment is: a leakage-proof gas pipeline, comprising a first pipeline 1 and a second pipeline 2, an inner diameter hole 3 opened on the right end face of the first pipeline 1, an outer diameter concave surface 4 arranged on the left end face of the second pipeline 2 and gap-matched with the inner diameter hole 3, a fixing device arranged between the right end face of the first pipeline 1 and the left end face of the second pipeline 2 for fixedly connecting the right end face of the first pipeline 1 and the left end face of the second pipeline 2 after the outer diameter concave surface 4 matches the inner diameter hole 3, an inner ring sealing gasket 5 arranged on the right end face of the first pipeline 1 and located on the left end face of the inner diameter hole 3 for sealing the gap between the inner diameter hole 3 and the outer diameter concave surface 4 after the right end face of the first pipeline 1 and the left end face of the second pipeline 2 are fixedly connected, and an outer ring sealing gasket 6 arranged on the left end face of the second pipeline 2 and located on the right end face of the outer diameter concave surface 4 for sealing the gap between the right end of the first pipeline 1 and the left end face of the second pipeline 2 after the right end face of the first pipeline 1 and the left end face of the second pipeline 2 are fixedly connected. Alternatively, the inner diameter hole 3 and the outer diameter concave surface 4 may be directly arranged at the right and left ends of each gas pipeline. The inner ring seal 5 is fixedly arranged on the right end face of the first pipeline 1 , and the outer diameter seal is fixedly arranged on the left end face of the second pipeline 2 .

[0023] The fixing device includes a fixed ring plate 7 disposed on the right end surface of the first pipe 1, a fixed protruding ring 8 disposed on the left end surface of the second pipe 2, a rotating ring plate 9 rotatably disposed on the fixed protruding ring 8, a rotating ring opening 10 provided on the rotating ring plate 9 for providing clearance between the rotating ring plate 9 and the fixed protruding ring 8, a threaded ring step 11 provided on the right end surface of the fixed ring plate 7, and a threaded ring hole 12 provided on the left end surface of the rotating ring plate 9 and threadedly connected to the threaded ring step 11. The fixed ring plate 7 is located on the circumference of the first pipe 1, and the fixed protruding ring 8 is located on the circumference of the second pipe 2. The rotating ring plate 9 is rotatably disposed on the fixed protruding ring 8 via the rotating ring opening 10. The arrangement of the fixed protruding ring 8 also limits the left and right movement of the rotating ring plate 9 on the second pipe 2.

[0024] An auxiliary device for reducing the rotation resistance of the rotating ring plate 9 on the fixed convex ring 8 is provided between the rotating ring plate 9 and the fixed convex ring 8 .

[0025] Two arc grooves 13 are respectively formed on the left and right sides of the fixed convex ring 8 , and balls 14 are respectively arranged on the left and right sides of the fixed convex ring 8 and located in the arc grooves 13 .

[0026] A sliding ring groove 15 for cooperating with the ball 14 is provided on the rotating ring plate 9 and communicated with the rotating ring opening 10 . The sliding ring groove 15 corresponds to the position of the ball 14 .

[0027] The inner ring sealing gasket 5 and the outer ring sealing gasket 6 are both rubber gaskets or silicone gaskets.

[0028] The working principle of the present invention is as follows: when the overall length of the gas pipeline is insufficient, the outer diameter concave surface 4 on the second pipeline 2 is inserted into the inner diameter hole 3 of the first pipeline 1 until the first pipeline 1 and the second pipeline 2 abut against each other. At this time, the threaded ring platform 11 and the threaded ring hole 12 are preliminarily matched, and then the rotating ring plate 9 is rotated on the fixed convex ring 8 by hand to make the threaded ring platform 11 and the threaded ring hole 12 threadedly matched, so that the rotating ring plate 9 and the fixed ring plate 7 are fixed, and the gap between the inner diameter hole 3 and the outer diameter concave surface 4 and the gap between the right end of the first pipeline 1 and the left end of the second pipeline 2 are sealed respectively by the inner ring sealing gasket 5 and the outer ring sealing gasket 6, thereby improving the connection sealing between the first pipeline 1 and the second pipeline 2, and the connected gas pipeline is not prone to leakage.

[0029] This utility model protects the product's structure; the component models are not the subject of this utility model protection and are generally known technology. Any commercially available component that can achieve the aforementioned functions of this utility model can be used as a leak-proof gas pipeline. Therefore, component models and other parameters are not described in detail in this utility model. The contribution of this utility model lies in the scientific combination of the components.

[0030] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for illustrative purposes. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements shall fall within the scope of the present invention as claimed. The scope of protection claimed in the present invention shall be defined by the appended claims and their equivalents. Any details not described in the present invention are well known to those skilled in the art.

Claims

1. A leak-proof gas pipeline, characterized by: The invention comprises a first pipe and a second pipe, an inner diameter hole opened on the right end face of the first pipe, an outer diameter concave surface provided on the left end face of the second pipe and loosely matched with the inner diameter hole, a fixing device provided between the right end face of the first pipe and the left end face of the second pipe for fixedly connecting the right end face of the first pipe and the left end face of the second pipe after the outer diameter concave surface matches the inner diameter hole, an inner ring sealing gasket provided on the right end face of the first pipe and located on the left end face of the inner diameter hole for sealing the gap between the inner diameter hole and the outer diameter concave surface after the right end face of the first pipe and the left end face of the second pipe are fixedly connected, and an outer ring sealing gasket provided on the left end face of the second pipe and located on the right end face of the outer diameter concave surface for sealing the gap between the right end of the first pipe and the left end face of the second pipe after the right end face of the first pipe and the left end face of the second pipe are fixedly connected.

2. The leak-proof gas pipeline according to claim 1, characterized in that: The fixing device includes a fixed ring plate arranged on the right end surface of the first pipe, a fixed convex ring arranged on the left end surface of the second pipe, a rotating ring plate rotatably arranged on the fixed convex ring, a rotating ring opening opened on the rotating ring plate for allowing the rotating ring plate and the fixed convex ring to fit in a clearance, a threaded ring platform arranged on the right end surface of the fixed ring plate, and a threaded ring hole opened on the left end surface of the rotating ring plate and threadedly connected to the threaded ring platform. The fixed ring plate is located on the circumferential side of the first pipe, and the fixed convex ring is located on the circumferential side of the second pipe.

3. The leak-proof gas pipeline according to claim 2, characterized in that: An auxiliary device for reducing the rotation resistance of the rotating ring plate on the fixed convex ring is provided between the rotating ring plate and the fixed convex ring.

4. The leak-proof gas pipeline according to claim 3, characterized in that: Two arc placement grooves are respectively provided on the left and right sides of the fixed convex ring, and the balls are respectively arranged on the left and right sides of the fixed convex ring and located in the arc placement grooves.

5. The leak-proof gas pipeline according to claim 2, characterized in that: A sliding ring groove for cooperating with the ball is provided on the rotating ring plate and is connected to the rotating ring opening. The sliding ring groove corresponds to the position of the ball.

6. The leak-proof gas pipeline according to claim 1, characterized in that: The inner ring sealing gasket and the outer ring sealing gasket are both rubber gaskets or silicone gaskets.

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