Gas pipeline expansion piece
By designing a gas pipeline telescope with wear-resistant ring and O-ring, the problems of low strength, low pressure bearing, time-consuming and labor-intensive operation in the existing technology are solved, and the effects of high strength, large pressure bearing, simple operation and large expansion and contraction are achieved. It is suitable for a wide range of gas transmission and distribution sites, and the maintenance convenience of equipment is improved.
Patent Information
- Application Number
- CN202420915664.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-29
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-04-29
AI Technical Summary
The existing gas pipeline telescope has low strength, low pressure bearing, time-consuming and labor-intensive operation, and small expansion and contraction, and has limited scope of application.
A gas pipeline telescope including inlet and outlet pipes is designed. By providing wear-resistant rings and O-rings on the pipe walls, flexible adjustment of the pipe length is achieved and equipped with oil injection holes for online maintenance.
It realizes a gas pipeline telescope with high strength, large pressure bearing, simple operation and large expansion and contraction. It has a wide range of applications and is suitable for large urban gate stations, long-distance pipelines and other places, and improves the convenience of equipment maintenance and replacement.
Smart Images
Figure CN222650803U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of gas transmission and distribution equipment, and in particular relates to a gas pipeline expansion joint. Background Art
[0002] On gas transmission and distribution pipelines, expansion joints are needed to adjust the length. The expansion joints currently used are made of thin plates pressed into a wavy shape. The thickness of the thin plates is 1-2 mm, with low strength and low pressure bearing capacity. When used, they are reinforced by forced stretching with screws. The operation is time-consuming and labor-intensive, and the expansion amount is small, generally 10-20 mm, and the scope of use is small. Utility Model Content
[0003] The technical problem to be solved by the utility model is to provide a gas pipeline expander with high strength, large pressure bearing, simple operation and large expansion amount.
[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: including an inlet pipe and an outlet pipe, the air inlet end of the inlet pipe is provided with an inlet flange, the outer diameter of the air outlet end of the inlet pipe is smaller than the outer diameter of the air inlet end of the inlet pipe, the inner diameter of the outlet pipe matches the outer diameter of the air outlet end of the inlet pipe, the outer diameter of the outlet pipe matches the outer diameter of the air inlet end of the inlet pipe, the air outlet end of the outlet pipe is provided with an outlet flange, the inner wall of the outlet pipe is provided with a first wear-resistant groove, a first sealing groove, a second sealing groove, and a second wear-resistant groove, the first wear-resistant groove and the second wear-resistant groove are respectively provided with wear-resistant rings, the first sealing groove and the second sealing groove are respectively provided with O-type rubber rings, and an oil filling hole is provided on the pipe wall of the outlet pipe between the first sealing groove and the second sealing groove.
[0005] The gas pipeline expansion joint provided by the utility model is assembled by respectively setting wear-resistant rings in the first wear-resistant groove and the second wear-resistant groove, respectively setting O-type rubber rings in the first sealing groove and the second sealing groove, and then aligning the air inlet end of the outlet pipe with the air outlet end of the inlet pipe and inserting them. During installation, the inlet flange of the air inlet end of the inlet pipe and the outlet flange of the air outlet end of the outlet pipe are respectively connected to the gas pipeline, and the air inlet end of the outlet pipe and the air outlet end of the inlet pipe are pulled in and out according to the installation length required by the user during construction. The gas pipeline expansion joint provided by the utility model has a connection length of the inlet pipe and the outlet pipe that can be freely designed and adjusted according to the length required by the user, a wear-resistant ring is used as a guide, an O-type rubber ring is used as a seal, and an oil filling hole for online maintenance is provided, which makes installation and use more convenient, saves time and labor, has a high design strength, can be used without traditional support, has a wide range of applications, and can be widely used in large-scale city gate stations, long-distance pipelines for gas transmission and distribution, valve wells, and equipment modification sites, etc., and also brings convenience to the subsequent maintenance and replacement of equipment. The wear-resistant ring is made of polyoxymethylene with a width of 15-25 mm, and the O-ring is made of nitrile rubber. BRIEF DESCRIPTION OF THE DRAWINGS
[0006] Figure 1 This is a schematic diagram of the structure of the gas pipeline expansion joint of the utility model;
[0007] Figure 2 It is a cross-sectional view of a gas pipeline expansion joint;
[0008] Figure 3 It is the structural schematic diagram of the inlet pipe;
[0009] Figure 4 This is a schematic diagram of the structure of the outlet pipe. DETAILED DESCRIPTION
[0010] The specific structure of the gas pipeline expansion joint of the utility model is further described in detail below in conjunction with the accompanying drawings.
[0011] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the utility model gas pipeline expansion joint comprises an inlet pipe 1 and an outlet pipe 2, the inlet end of the inlet pipe 1 is provided with an inlet flange 3, the outer diameter 101 of the outlet end of the inlet pipe 1 is smaller than the outer diameter 102 of the inlet end of the inlet pipe 2, the inner diameter 201 of the outlet pipe matches the outer diameter 101 of the outlet end of the inlet pipe 1, the outer diameter 202 of the outlet pipe matches the outer diameter 102 of the inlet end of the inlet pipe 1, the outlet end of the outlet pipe 2 is provided with an outlet flange 4, the inner wall of the outlet pipe 2 is provided with a first wear-resistant groove 5, a first sealing groove 6, a second sealing groove 7, and a second wear-resistant groove 8, the first wear-resistant groove 5 and the second wear-resistant groove 8 are respectively provided with wear-resistant rings 9, the first sealing groove 6 and the second sealing groove 7 are respectively provided with O-type rubber rings 10, and an oil filling hole 11 is provided on the pipe wall of the outlet pipe 2 between the first sealing groove 6 and the second sealing groove 7.
[0012] The gas pipeline expansion joint provided by the utility model, when assembled, wear-resistant rings 9 are respectively arranged in the first wear-resistant groove 5 and the second wear-resistant groove 8, and O-type rubber rings 10 are respectively arranged in the first sealing groove 6 and the second sealing groove 7, and then the air inlet end of the outlet pipe 2 is aligned and inserted with the air outlet end of the inlet pipe 1. During installation, the inlet flange 3 of the air inlet end of the inlet pipe 1 and the outlet flange 4 of the air outlet end of the outlet pipe 2 are respectively connected to the gas pipeline, and the air inlet end of the outlet pipe 2 and the air outlet end of the inlet pipe 1 are pulled in and out according to the installation length required by the user during construction. The gas pipeline expansion joint provided by the utility model, the connection length of the inlet pipe 1 and the outlet pipe 2 is arbitrarily designed and adjusted according to the length required by the user, the wear-resistant ring 9 is used as a guide, the O-type rubber ring 10 is used as a seal, and an oil injection hole 11 for online maintenance is provided, which makes installation and use more convenient, saves time and labor, has a high design strength, can be used without traditional support, has a wide range of applications, can be widely used in large-scale city gate stations, long-distance pipelines for gas transmission and distribution, valve wells, and equipment transformation sites, etc., and also brings convenience for the subsequent maintenance and replacement of equipment. The wear-resistant ring 9 is made of polyoxymethylene with a width of 15-25 mm, and the O-type rubber ring 10 is made of nitrile rubber.
[0013] The gas pipeline expansion joint provided by the utility model is not limited to the above-mentioned structure. Any modification, equivalent replacement and improvement made on the basis of the utility model shall be included in the protection scope of the utility model.
Claims
1. A gas pipeline expansion joint, comprising an inlet pipe and an outlet pipe, characterized in that: The air inlet end of the inlet pipe is provided with an inlet flange, the outer diameter of the air outlet end of the inlet pipe is smaller than the outer diameter of the air inlet end of the inlet pipe, the inner diameter of the outlet pipe matches the outer diameter of the air outlet end of the inlet pipe, the outer diameter of the outlet pipe matches the outer diameter of the air inlet end of the inlet pipe, the air outlet end of the outlet pipe is provided with an outlet flange, the inner wall of the outlet pipe is provided with a first wear-resistant groove, a first sealing groove, a second sealing groove, and a second wear-resistant groove, the first wear-resistant groove and the second wear-resistant groove are respectively provided with wear-resistant rings, the first sealing groove and the second sealing groove are respectively provided with O-type rubber rings, and an oil filling hole is provided on the pipe wall of the outlet pipe between the first sealing groove and the second sealing groove.