Repairing method and repairing pipe structure for partially dug old pipeline with stainless lining

A technology of local excavation and repair method, applied in the direction of pipes/pipe joints/pipes, pipe components, mechanical equipment, etc. Increased corrosion life, high strength, and beneficial effects on human health

Inactive Publication Date: 2003-01-01
侯贤忠 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing repair methods and repair pipeline structures for old pipelines made of steel pipes, cast iron pipes, plastic pipes, glass steel pipes, cement pipes, etc. Cement mortar, resin cement, various plastics, rubber and other non-metallic materials are tried to be applied to the inner wall of the old pipeline, and solidified to form a solid inner lining. Secondary pollution cannot meet the requirements of modern people

Method used

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  • Repairing method and repairing pipe structure for partially dug old pipeline with stainless lining
  • Repairing method and repairing pipe structure for partially dug old pipeline with stainless lining
  • Repairing method and repairing pipe structure for partially dug old pipeline with stainless lining

Examples

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Embodiment Construction

[0053] 1. Use the vertical operation well to repair the old pipeline made of carbon steel pipe, the carbon steel pipe is 73×5.5mm, the stainless steel lining pipe is made of 304 stainless steel, the size is 61×0.4mm, and the segment length is 9-20m. After shrinking, the size is 59-60mm. Put it into the old carbon steel pipe and seal it. Use gasoline and oxygen mixture to explode the diameter. After the diameter of the stainless steel lined pipe is expanded, the inner wall is smooth and checked by 20MPa water pressure. There is no leakage and meets the original requirements. Technical requirements for carbon steel pipes.

[0054] 2. Use the vertical operation well to repair the 300×40mm cement pipe. The interior is lined with a stainless steel lining pipe made of 304 stainless steel. The size is 280×0.5mm and the length is 80m. After it is placed in the cement pipe, the cement pipe and stainless steel Put a number of equidistant cards between the lining pipes, the distance betw...

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Abstract

The present invention aims at preparing old pipe with relatively higher increased strength, longer life and no secondary pollution. When the stainless steel pipe has outside diameter near the inner diameter of the repaired old pipe, the stainless steel pipe will have its outside diameter reduced or enlarged before setting into the old pipe, and there are stainelss steel unions at two ends and adhesive between two pipes. When the stainless steel pipe has outside diameter smaller than the inner diameter of the repaired old pipe, there will be separating wedges, adhesive and stuffing between the two pipes. The method and structure is used mainly in repairing various underground pipes.

Description

technical field [0001] The stainless steel lining pipe repair method and the repair pipeline structure of the partially excavated old pipeline proposed by the present invention belong to the technical field of pipeline repair, and in particular relate to the repair of old pipelines with stainless steel lining pipes. Background technique [0002] There are criss-crossing oil, gas, water supply and drainage, electricity, communication and other pipelines buried underground in modern cities. After long-term operation of these pipelines, various pipelines need to be updated or repaired in order to restore the functions of the pipelines. [0003] The existing repair methods and repair pipeline structures for old pipelines made of steel pipes, cast iron pipes, plastic pipes, glass steel pipes, cement pipes, etc. Cement mortar, resin cement, various plastics, rubber and other non-metallic materials are tried to be applied to the inner wall of the old pipeline, and solidified to for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L55/162
Inventor 侯贤忠
Owner 侯贤忠
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