Corrosion-resistant through-wall gas pipeline

Abstract

The utility model relates to the technical field of gas pipelines, in particular to an anti-corrosive through-wall gas pipeline which comprises a pipeline body. The pipeline further comprises an outer protection layer and an engineering plastic shell, the outer protection layer is arranged on the outer sides of the pipeline bodies, the two pipeline bodies are connected through flanges, the engineering plastic shell is arranged at the flange connecting position of the pipeline bodies, and a positioning assembly used for fixing the outer protection layer is arranged on the outer protection layer. According to the gas pipeline, the anti-corrosion layer on the surface of the pipeline is prevented from falling off in the mode that the gas pipeline is isolated from the external environment through the outer protection layers, different outer protection layers can be replaced or additionally arranged according to different environments so as to cope with different environments, installation and fixing are extremely convenient, sealing performance is good, and the service life is long. The protective structure at the flange can play a role in fixed connection at the same time, the connecting rod is used for prolonging the distance of the upper shell, and when the protective layer sleeve is added according to different environments, the connecting rod is pulled outwards, and then the length can be increased.

Description

Technical Field

[0001] This utility model relates to the field of gas pipeline technology, and in particular to corrosion-resistant through-wall gas pipelines. Background Technology

[0002] The main function of gas pipelines is to transport natural gas, including associated gas produced in oil fields, from extraction sites or processing plants to urban gas distribution centers or industrial users.

[0003] During the use of gas pipelines, because gas pipelines are often exposed to the outside, the anti-corrosion layer installed on the outer layer of gas pipelines is prone to peeling off from the surface of gas pipelines due to long-term weathering and temperature differences between day and night. This corrosion of gas pipelines may lead to gas leaks.

[0004] To address the problem that gas pipelines are often exposed to the elements, and the anti-corrosion layer on the outer surface of the pipeline is prone to detachment due to long-term weathering and diurnal temperature variations, leading to gas leaks, a gas pipeline with a replaceable protective layer structure that can be added according to different environments can be designed to overcome this problem. Utility Model Content

[0005] To overcome the problem that the anti-corrosion layer installed on the outer layer of gas pipelines is often exposed to the elements and is prone to detachment from the surface of the gas pipeline due to long-term weathering and temperature differences between day and night, leading to gas leaks.

[0006] The technical solution of this utility model is as follows: a corrosion-resistant through-wall gas pipeline, including a pipeline body; and an outer protective layer and an engineering plastic shell. The outer protective layer is provided on the outside of the pipeline body, and the two pipeline bodies are connected by a flange. An engineering plastic shell is provided at the flange connection of the pipeline body, and a positioning component for fixing the outer protective layer is provided on the outer protective layer.

[0007] Preferably, the pipe body has grooves on both sides, sealing gaskets are provided in the grooves on both sides, connection holes are evenly distributed on the surface of the pipe body, positioning holes are provided on the side of the pipe body, and the flange connection of the pipe body is a bevel.

[0008] Preferably, the outer protective layer has a positioning hole on its surface, an upper housing is provided at the connection hole, a threaded connector is provided at the lower end of the upper housing, the upper housing is threadedly connected to the connection hole through the threaded connector, the upper housing passes through the positioning hole, a slider is slidably connected inside the upper housing, a slide groove is provided inside the upper housing, the slide groove is adapted to the slider, a connecting rod is fixedly connected to the upper end of the slider, and a handle is fixedly connected to the upper end of the connecting rod.

[0009] Preferably, an upper cover is fixedly connected to the upper end of the upper housing, and a spring is provided between the upper cover and the slider, with the spring sleeved on the connecting rod.

[0010] Preferably, the engineering plastic shell is provided with positioning hole three, the end of the engineering plastic shell is provided with groove, the end groove of the engineering plastic shell is provided with rubber pad, and the engineering plastic shell is provided with groove that is adapted to the connection of the flange of the pipe body.

[0011] Preferably, one end of the outer protective layer has a Velcro velvet side, and the other end of the outer protective layer has a Velcro hook side.

[0012] Preferably, the surface of the engineering plastic housing is provided with a strip-shaped sealing ring, and the lower end of the handle is provided with an annular sealing ring. Both the annular sealing ring and the strip-shaped sealing ring are in contact with the surface of the outer protective layer.

[0013] The beneficial effects of this utility model are: the gas pipeline prevents the anti-corrosion layer on the pipeline surface from falling off by isolating the gas pipeline from the external environment through an outer protective layer, and different outer protective layers can be replaced or added according to different environments to cope with different environments. It is also extremely convenient to install and fix, has good sealing performance, and the protective structure at the flange can also play a role in fixing the connection. Attached Figure Description

[0014] Figure 1 The diagram shows a three-dimensional structure of the corrosion-resistant through-wall gas pipeline and sealing gasket of this utility model.

[0015] Figure 2 The diagram shows a three-dimensional structure of the corrosion-resistant through-wall gas pipeline and the main body of the pipeline according to this utility model.

[0016] Figure 3 The diagram shows a three-dimensional structural schematic of the corrosion-resistant through-wall gas pipeline and positioning hole of this utility model.

[0017] Figure 4 The diagram shows a three-dimensional structure of the corrosion-resistant through-wall gas pipeline and its outer protective layer according to this utility model.

[0018] Figure 5 The diagram shows a three-dimensional structure of the corrosion-resistant through-wall gas pipeline and rubber gasket of this utility model.

[0019] Figure 6 The diagram shows a three-dimensional structure of the corrosion-resistant through-wall gas pipeline and the engineering plastic shell of this utility model.

[0020] Figure 7 The diagram shows a three-dimensional structure of the corrosion-resistant through-wall gas pipeline and slider of this utility model.

[0021] Figure 8 The diagram shows a three-dimensional structure of the corrosion-resistant through-wall gas pipeline and the annular sealing ring of this utility model.

[0022] Explanation of reference numerals in the attached drawings: 1. Pipe body; 2. Sealing gasket; 3. Connection hole; 4. Outer protective layer; 5. Positioning hole one; 6. Upper shell; 7. Threaded connector; 8. Slide groove; 9. Sliding block; 10. Connecting rod; 11. Spring; 12. Handle; 13. Annular sealing ring; 14. Upper cover; 15. Engineering plastic shell; 16. Rubber gasket; 17. Positioning hole two; 18. Strip sealing ring; 19. Positioning hole two. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Please see Figures 1-8 This utility model provides an embodiment of a corrosion-resistant through-wall gas pipeline, including a pipeline body 1; it also includes an outer protective layer 4 and an engineering plastic shell 15. The outer protective layer 4 is provided on the outside of the pipeline body 1, and the two pipeline bodies 1 are connected by a flange. The flange connection of the pipeline body 1 is provided with an engineering plastic shell 15, and the outer protective layer 4 is provided with a positioning component for fixing the outer protective layer 4.

[0025] Please see Figure 3 , Figure 7 and Figure 8 In this embodiment, the pipe body 1 has grooves on both sides, and sealing gaskets 2 are provided in the grooves on both sides of the pipe body 1. Connection holes 3 are evenly distributed on the surface of the pipe body 1. Positioning holes 17 are provided on the side of the pipe body 1. The flange connection of the pipe body 1 is beveled. Positioning holes 5 are provided on the surface of the outer protective layer 4. An upper housing 6 is provided at the connection hole 3. A threaded connector 7 is provided at the lower end of the upper housing 6. The upper housing 6 is threadedly connected to the connection hole 3 through the threaded connector 7. The upper housing 6 passes through the positioning hole 5. A slider 9 is slidably connected inside the upper housing 6. There is a sliding groove 8, which is adapted to the slider 9. The upper end of the slider 9 is fixedly connected to a connecting rod 10, and the upper end of the connecting rod 10 is fixedly connected to a handle 12. The upper end of the upper housing 6 is fixedly connected to an upper cover 14. A spring 11 is provided between the upper cover 14 and the slider 9. The spring 11 is sleeved on the connecting rod 10. The sliding groove 8 is adapted to the slider 9 to facilitate the movement of the slider 9. When the slider 9 rotates, it can drive the upper housing 6 to rotate. The connecting rod 10 is used to extend the distance of the upper housing 6. When adding a protective layer according to different environments, the connecting rod 10 can be pulled outward to increase the length.

[0026] Please see Figure 5 and Figure 6In this embodiment, the engineering plastic housing 15 is provided with positioning holes 19, and the end of the engineering plastic housing 15 is provided with a groove. A rubber pad 16 is provided in the groove at the end of the engineering plastic housing 15. The engineering plastic housing 15 is provided with a groove that is adapted to the flange connection of the pipe body 1. One end of the outer protective layer 4 is provided with a Velcro velvet surface, and the other end of the outer protective layer 4 is provided with a Velcro hook surface. The surface of the engineering plastic housing 15 is provided with a strip sealing ring 18, and the lower end of the handle 12 is provided with an annular sealing ring 13. Both the annular sealing ring 13 and the strip sealing ring 18 are attached to the surface of the outer protective layer 4. The annular sealing ring 13 at the lower end of the handle 12 ensures the tightness of the connection between the outer protective layer 4 and the handle 12, preventing external rainwater from entering. The strip sealing ring 18 is used to ensure the tightness between the engineering plastic housing 15 and the outer protective layer 4, preventing rainwater from entering the flange connection and causing the screws to corrode and loosen. The groove of the engineering plastic housing 15 is used to squeeze the inclined surface of the flange connection of the pipe body 1, further ensuring the tightness of the connection of the pipe body 1.

[0027] During use, first, pass the bolt through the positioning hole 17 and connect another pipe body 1 to one side of the pipe body 1. Then tighten the bolt to complete the flange connection between the pipe bodies 1. The sealing gasket 2 is used to ensure the sealing of the flange connection of the pipe body 1. Then, wrap the outer protective layer 4 around the surface of the pipe body 1. Connect the Velcro side of one end of the outer protective layer 4 to the Velcro hook side of the other end to complete the initial positioning of the outer protective layer 4. Then, threaded connector 7 at one end of the upper housing 6 is threaded through the positioning hole 5 and connected to the connection hole 3. Under the action of the spring 11, the slider 9 slides downward in the upper housing 6, and the handle 12 simultaneously presses down on the outer protective layer 4, thereby fixing the outer protective layer 4. The annular sealing ring 13 at the lower end of the handle 12 ensures the tightness of the connection between the outer protective layer 4 and the handle 12 to prevent rainwater from entering. The handle 12 makes it easy to tighten the threaded connector 7. On the connecting hole 3, the sliding groove 8 is adapted to the slider 9, which facilitates the movement of the slider 9. When the slider 9 rotates, it can drive the upper housing 6 to rotate. The connecting rod 10 is used to extend the distance of the upper housing 6. Depending on the environment, when adding a protective layer sleeve, the connecting rod 10 is pulled outward to increase the length. The new protective layer sleeve is then placed on the outer protective layer 4. Then the connecting rod 10 is released, and under the action of the spring 11, the handle 12 is used to fix the new protective layer sleeve again. The engineering plastic housing 15 is installed at the flange connection of the pipe body 1. Then, the two engineering plastic housings 15 are fixed by connecting them to the positioning hole 3 19 with plastic bolts. The strip sealing ring 18 is used to ensure the tightness between the engineering plastic housing 15 and the outer protective layer 4, and to prevent rainwater from entering the flange connection and causing the screws to corrode and loosen. The groove of the engineering plastic housing 15 is used to squeeze the bevel of the flange connection of the pipe body 1, further ensuring the tightness of the connection of the pipe body 1.

[0028] Through the above steps, the gas pipeline is isolated from the external environment by the outer protective layer 4 to prevent the anti-corrosion layer on the pipeline surface from falling off. Different outer protective layers 4 can be replaced or added according to different environments to cope with different environments. The installation and fixing are extremely convenient and the sealing performance is good.

[0029] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A corrosion-resistant through-wall gas pipeline, comprising a pipeline body (1); characterized in that: It also includes an outer protective layer (4) and an engineering plastic shell (15). The outer protective layer (4) is provided on the outside of the pipe body (1). The two pipe bodies (1) are connected by a flange. The flange connection of the pipe body (1) is provided with an engineering plastic shell (15). The outer protective layer (4) is provided with a positioning component for fixing the outer protective layer (4).

2. The corrosion-resistant through-wall gas pipeline according to claim 1, characterized in that: The pipe body (1) has grooves on both sides, and sealing gaskets (2) are provided in the grooves on both sides of the pipe body (1). Connection holes (3) are evenly distributed on the surface of the pipe body (1). Positioning holes (17) are provided on the side of the pipe body (1). The flange connection of the pipe body (1) is a bevel.

3. The corrosion-resistant through-wall gas pipeline according to claim 2, characterized in that: The outer protective layer (4) has a positioning hole (5) on its surface. The upper housing (6) is located at the connection hole (3). The lower end of the upper housing (6) is provided with a threaded connector (7). The upper housing (6) is threadedly connected to the connection hole (3) through the threaded connector (7). The upper housing (6) passes through the positioning hole (5). A slider (9) is slidably connected inside the upper housing (6). A groove (8) is provided inside the upper housing (6). The groove (8) is adapted to the slider (9). A connecting rod (10) is fixedly connected to the upper end of the slider (9). A handle (12) is fixedly connected to the upper end of the connecting rod (10).

4. The corrosion-resistant through-wall gas pipeline according to claim 3, characterized in that: The upper end of the upper housing (6) is fixedly connected to the upper cover (14), and a spring (11) is provided between the upper cover (14) and the slider (9). The spring (11) is sleeved on the connecting rod (10).

5. The corrosion-resistant through-wall gas pipeline according to claim 4, characterized in that: The engineering plastic housing (15) is provided with positioning hole three (19), the end of the engineering plastic housing (15) is provided with groove, the end of the engineering plastic housing (15) is provided with rubber pad (16), and the engineering plastic housing (15) is provided with groove that is adapted to the flange connection of the pipe body (1).

6. The corrosion-resistant through-wall gas pipeline according to claim 5, characterized in that: One end of the outer protective layer (4) is provided with a Velcro velvet surface, and the other end of the outer protective layer (4) is provided with a Velcro hook surface.

7. The corrosion-resistant through-wall gas pipeline according to claim 6, characterized in that: The surface of the engineering plastic housing (15) is provided with a strip-shaped sealing ring (18), and the lower end of the handle (12) is provided with an annular sealing ring (13). Both the annular sealing ring (13) and the strip-shaped sealing ring (18) are attached to the surface of the outer protective layer (4).

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