Natural gas pipeline leakproof device

Abstract

The utility model provides a natural gas pipeline leakproof device, which relates to the technical field of natural gas pipelines and comprises a pipeline body, an auxiliary sealing mechanism is arranged inside the joint of the pipeline body, a protective cover is mounted on the outer side of the pipeline body, and connecting mechanisms for fixing are arranged at two ends of the pipeline body and the protective cover. A through hole is formed in the top of the protection cover in a penetrating mode, and a sealing plug is movably installed in the through hole. The first sealing ring and the second sealing ring are connected into a whole through matching of the triangular protrusion and the triangular groove, so that the connecting position of the pipeline body has better sealing performance, position deviation is not prone to occurring, good sealing can be kept all the time, and the service life of the pipeline body is prolonged. An annular closed space is formed between the inner wall of the protective cover and the outer wall of the pipeline body, when natural gas in the pipeline body leaks, the leaked natural gas can be collected, waste of the natural gas can be effectively reduced, and safety is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of natural gas pipelines, and particularly relates to a natural gas pipeline leakage prevention device. Background Technique

[0002] A natural gas pipeline is a pipeline for transporting natural gas. A natural gas transportation line is generally composed of multiple sections of natural gas pipelines connected together. There is generally a connection structure at the connection of the natural gas pipelines. For example, a natural gas pipeline connection structure proposed in the patent with the application number 202120260995.0 includes pipeline one and pipeline two. The natural gas pipeline connection structure further includes: a base, two groups of movable rings one and two groups of movable rings two are movably connected to the top of the base. Connecting plates are fixedly connected to the tops of the two groups of movable rings one and the two groups of movable rings two. The connecting plates are fixedly connected by bolts. The two groups of movable rings one and the two groups of movable rings two are sleeved on the outer walls of pipeline one and pipeline two. The above scheme fixes the two sides of the natural gas pipeline by externally connecting two connecting pieces with movable ring one and movable ring two. Arc-shaped reinforcing plates that fit the pipeline are fixedly connected to the horizontal ends of the two movable rings one and the two movable rings two, strengthening the stress resistance strength of the pipeline. And the bellows arranged at the horizontal end weakens the deformation caused by thermal expansion and contraction at the pipeline connection, and strengthens the service life of the pipeline.

[0003] After long-term use of the existing natural gas pipeline connection, loosening will occur, resulting in poor sealing performance. After there is pressure inside the pipeline, leakage will occur at the connection, which will not only cause waste of natural gas, but also pose a great safety hazard. Therefore, we make improvements and propose a natural gas pipeline leakage prevention device. Content of the Utility Model

[0004] The main purpose of the utility model is to provide a natural gas pipeline leakage prevention device, which can effectively solve the problems that after long-term use of the natural gas pipeline connection, loosening will occur, resulting in poor sealing performance. After there is pressure inside the pipeline, leakage will occur at the connection, which will not only cause waste of natural gas, but also pose a great safety hazard.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A natural gas pipeline leakage prevention device includes a pipeline body. An auxiliary sealing mechanism is arranged inside the connection of the pipeline body. A protective cover is installed outside the pipeline body. Connection mechanisms for fixing are arranged at both ends of the pipeline body and the protective cover. A through hole is formed through the top of the protective cover, and a sealing plug is movably installed inside the through hole.

[0007] Preferably, the auxiliary sealing mechanism includes a first sealing ring and a second sealing ring. The first sealing ring and the second sealing ring are respectively installed on the inner walls of adjacent pipe bodies, and a connecting strip is installed at one end of the first sealing ring.

[0008] Preferably, a plurality of triangular protrusions are uniformly distributed on one side surface of the connecting strip, and a connecting groove is formed on one end surface of the second sealing ring.

[0009] Preferably, a plurality of triangular grooves are formed on the inner wall of the connecting groove, and the triangular protrusions can cooperate with the triangular grooves.

[0010] Preferably, the connecting mechanism includes side plates. The side plates are uniformly distributed and installed on the two end surfaces of the protective cover. A fastening bolt is movably installed on one side of each side plate, and threaded holes for cooperating with the fastening bolts are formed on the outer surfaces of the side plates and the pipe body.

[0011] Preferably, an annular clamping groove is formed on the outer surface of the pipe body. First inclined surfaces are arranged on both sides of the top of the annular clamping groove. Annular sealing gaskets are installed on the inner walls of both ends of the protective cover, and second inclined surfaces are arranged on both sides of the bottom of each annular sealing gasket.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] During the docking process of adjacent pipe bodies, the triangular protrusions will cooperate with the triangular grooves, which can make the position of the connecting strip in the connecting groove more stable, connect the first sealing ring and the second sealing ring into a whole, make the connection part of the pipe body have better sealing performance, and is not easy to shift in position, and can always maintain good sealing. An annular closed space will be formed between the inner wall of the protective cover and the outer wall of the pipe body. When natural gas leaks inside the pipe body, it can play a role in collecting the leaked natural gas, and it is convenient to suck the collected natural gas through the through hole, which can effectively reduce the waste of natural gas and has higher safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a three-dimensional structural diagram of the utility model;

[0015] Figure 2 is a side view of the utility model;

[0016] Figure 3 is the Figure 2 three-dimensional structural sectional view at A-A of the utility model;

[0017] Figure 4 is the Figure 3 enlarged view at B of the utility model;

[0018] Figure 5 For the present utility model Figure 3 The enlarged view at position C in the figure.

[0019] In the figure: 1. Pipeline body; 101. Annular clamping groove; 1011. First inclined surface; 2. Auxiliary sealing mechanism; 201. First sealing ring; 2011. Connecting strip; 2012. Triangular protrusion; 202. Second sealing ring; 2021. Connecting groove; 2022. Triangular groove; 3. Protective cover; 301. Annular gasket; 302. Second inclined surface; 4. Connecting mechanism; 401. Side plate; 402. Fastening bolt; 403. Threaded hole; 5. Through hole; 6. Sealing plug. Specific embodiments

[0020] Next, in combination with the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present utility model.

[0021] As Figure 1 , Figure 2 , Figure 3 shown, a natural gas pipeline anti-leakage device includes a pipeline body 1. An auxiliary sealing mechanism 2 is arranged inside the connection part of the pipeline body 1. A protective cover 3 is installed outside the pipeline body 1. Connection mechanisms 4 for fixation are arranged at both ends of the pipeline body 1 and the protective cover 3. A through hole 5 is penetrated and opened at the top of the protective cover 3, and a sealing plug 6 is movably installed inside the through hole 5.

[0022] As Figure 3 , Figure 4 shown, the auxiliary sealing mechanism 2 includes a first sealing ring 201 and a second sealing ring 202. The first sealing ring 201 and the second sealing ring 202 are respectively installed on the inner walls of adjacent pipeline bodies 1. A connecting strip 2011 is installed at one end of the first sealing ring 201. A plurality of triangular protrusions 2012 are uniformly distributed on one side surface of the connecting strip 2011. A connecting groove 2021 is opened on one end surface of the second sealing ring 202, and a plurality of triangular grooves 2022 are opened on the inner wall of the connecting groove 2021. The triangular protrusions 2012 can cooperate with the triangular grooves 2022.

[0023] When splicing the pipeline body 1, through the cooperation between the triangular protrusions 2012 and the triangular grooves 2022, the first sealing ring 201 and the second sealing ring 202 can be connected into a whole, thus having a better sealing effect.

[0024] As shown Figure 3 、 Figure 5 in, the connecting mechanism 4 includes side plates 401 which are evenly distributed and installed on the two end surfaces of the protective cover 3. A fastening bolt 402 is movably installed on one side of each side plate 401. Threaded holes 403 that cooperate with the fastening bolts 402 are provided on the outer surfaces of the side plates 401 and the pipe body 1. An annular card slot 101 is provided on the outer surface of the pipe body 1. First inclined surfaces 1011 are provided on both sides of the top of the annular card slot 101. Annular gaskets 301 are installed on the inner walls of both ends of the protective cover 3. Second inclined surfaces 302 are provided on both sides of the bottom of each annular gasket 301.

[0025] Through the cooperation between the annular gasket 301 and the annular card slot 101, a better sealing effect can be achieved at the contact position between the protective cover 3 and the surface of the pipe body 1. When installing the protective cover 3, the annular gasket 301 itself has a certain elasticity. Through the cooperation between the first inclined surface 1011 and the second inclined surface 302, the annular gasket 301 can enter the inside of the annular card slot 101. By installing and disassembling the fastening bolts 402, the protective cover 3 can be installed and disassembled, which is more convenient to use.

[0026] The working principle of this natural gas pipeline anti-leakage device:

[0027] When installing adjacent pipe bodies 1, first, the protective cover 3 is sleeved on the outside of the pipe body 1. During the butt joint of adjacent pipe bodies 1, the connecting strip 2011 at one end of the first sealing ring 201 will be inserted into the connecting groove 2021 at the end of the second sealing ring 202. During the insertion process, the triangular protrusion 2012 will cooperate with the triangular groove 2022, which can make the position of the connecting strip 2011 in the connecting groove 2021 more stable, so that the first sealing ring 201 and the second sealing ring 202 are connected into a whole, which can make the joint of the pipe body 1 have better sealing performance and is not easy to shift in position, and can always maintain good sealing. Through the fastening bolts 402, the position of the protective cover 3 outside the pipe body 1 can be fixed. There will be an annular closed space between the inner wall of the protective cover 3 and the outer wall of the pipe body 1. When natural gas leaks inside the pipe body 1, it can play a role in collecting the leaked natural gas. The collected natural gas can be sucked through the through hole 5, which can effectively reduce the waste of natural gas and has higher safety.

[0028] Obviously, the above embodiments of the present utility are merely examples for clearly illustrating the present utility, rather than limitations on the implementation manners of the present utility. For those of ordinary skill in the art, other different forms of changes or alterations can be made based on the above description. It is impossible to enumerate all implementation manners here. Any obvious changes or alterations derived from the technical solutions of the present utility still fall within the protection scope of the present utility.

Claims

1. A natural gas pipeline anti-leakage device, comprising a pipeline body (1), characterized in that: An auxiliary sealing mechanism (2) is arranged inside the joint of the pipeline body (1). A protective cover (3) is installed on the outer side of the pipeline body (1). Connection mechanisms (4) for fixation are arranged at both ends of the pipeline body (1) and the protective cover (3). A through hole (5) is formed through the top of the protective cover (3), and a sealing plug (6) is movably installed inside the through hole (5).

2. The natural gas pipeline leakage prevention device according to claim 1, characterized in that: The auxiliary sealing mechanism (2) includes a first sealing ring (201) and a second sealing ring (202). The first sealing ring (201) and the second sealing ring (202) are respectively installed on the inner walls of adjacent pipeline bodies (1). A connection strip (2011) is installed at one end of the first sealing ring (201).

3. The natural gas pipeline leakage prevention device according to claim 2, characterized in that: A number of triangular protrusions (2012) are evenly distributed on one side surface of the connection strip (2011). A connection groove (2021) is formed on one end surface of the second sealing ring (202).

4. The natural gas pipeline leakage prevention device according to claim 3, characterized in that: A number of triangular grooves (2022) are formed on the inner wall of the connection groove (2021), and the triangular protrusions (2012) can cooperate with the triangular grooves (2022).

5. The natural gas pipeline leakage prevention device according to claim 1, characterized in that: The connection mechanism (4) includes side plates (401). The side plates (401) are evenly distributed and installed on the two end surfaces of the protective cover (3). A fastening bolt (402) is movably installed on one side of each side plate (401). Threaded holes (403) for cooperating with the fastening bolts (402) are formed on the outer surfaces of the side plates (401) and the pipeline body (1).

6. The natural gas pipeline leakage prevention device according to claim 1, wherein: An annular clamping groove (101) is formed on the outer surface of the pipeline body (1). First inclined surfaces (1011) are arranged on both sides at the top of the annular clamping groove (101). Annular sealing gaskets (301) are installed on the inner walls at both ends of the protective cover (3). Second inclined surfaces (302) are arranged on both sides at the bottom of each annular sealing gasket (301).

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