Trenchless repairing method of underground pipeline with drawing-type liner pipe

An underground pipeline and repair method technology, applied in the direction of pipes/pipe joints/fittings, pipe components, mechanical equipment, etc., can solve the problems of uneven heat transfer of hot water, uneven curing strength of resin hoses, etc., to protect the environment, Accelerate the curing reaction speed, good social and economic benefits

Inactive Publication Date: 2010-12-08
管丽环境技术(上海)有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, when heating with hot water circulation, due to the uneven inner wall of the old pipe, it is easy to cause uneven heat transfer of hot water, which in turn leads to uneven curing strength of the resin hose.

Method used

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  • Trenchless repairing method of underground pipeline with drawing-type liner pipe
  • Trenchless repairing method of underground pipeline with drawing-type liner pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Before the impermeable cylindrical auxiliary lining hose is sent into the old pipeline to be repaired, the thermosetting resin is pre-impregnated in the non-woven hose to form a resin hose, and the inside and outside are turned over. Then,

[0050] Block and clean the old sewage pipelines that need to be repaired, and use closed-circuit television system CCTV equipment to detect the inside of the pipelines. The pipeline is fed into the impermeable cylindrical auxiliary lining hose, which is lined on the inner wall of the pipeline to be repaired.

[0051] The resin hose that has been turned inside and outside beforehand is pulled together with the hot water delivery pipe for heating into the impermeable cylindrical auxiliary lining hose in a deflated state.

[0052] After the inside and outside of the resin hose are turned over, the pulling operation of sending the resin hose together with the hot water delivery pipe for heating into the water-tight cylindrical auxiliar...

Embodiment 2

[0061] Except for the following differences, it is the same as Embodiment 1, implementing the lining pipe pulling type underground pipeline trenchless repair method of the present invention.

[0062] 0.8kgf / cm2 air pressure is used to make the lining pipe expand and stick to the inner wall of the old pipe. Then, the inside of the resin hose is heated with 85-degree hot water circulation, so that the thermosetting resin hose is gradually hardened and formed.

[0063] The diameter of the pipeline to be repaired in this embodiment is Φ300-Φ600mm.

Embodiment 3

[0065] Except for the following differences, it is the same as Embodiment 1, implementing the lining pipe pulling type underground pipeline trenchless repair method of the present invention.

[0066] 0.8kgf / cm2 air pressure is used to make the lining pipe expand and stick to the inner wall of the old pipe. Then, the inside of the resin hose is heated with 85-degree hot water circulation, so that the thermosetting resin hose is gradually hardened and formed.

[0067] The diameter of the pipeline to be repaired in this embodiment is Φ500-Φ800 mm.

[0068] According to the non-excavation repair method of lined pipe pulling type underground pipeline of the present invention, the resin hose and the hot water delivery pipe for heating that have been made and turned over in the factory in advance are pulled into the old pipe that has been placed inside the old pipe. The water-permeable cylindrical auxiliary lining hose, and then, the above-mentioned resin hose pulled in is expanded ...

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PUM

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Abstract

The invention relates to a trenchless repairing method of an underground pipeline with a drawing-type liner pipe. The method comprises the following steps of: (1) blocking and cleaning a worn sewage pipeline and detecting the interior of the pipeline; (2) drawing a watertight cylindrical auxiliary liner hose in the worn pipeline, preliminarily impregnating thermosetting resin in a non-woven hose to form a resin hose and well turning the resin hose; (3) drawing the well-turned resin hose and a warm water conveying pipe for heating in the watertight cylindrical auxiliary liner hose which is already arranged in the worn pipeline; and (4) expanding the resin hose by adopting compression air to tightly attach to the worn pipe, directly adding hot water to the resin hose to harden and form the thermosetting resin hose in the worn pipe and forming a new high-strength liner pipe on the inner wall of the worn pipe. The invention solves limitation caused by a construction site when repairing an underground pipeline through liner by using a turning method, solves the problem of uneven resin curing strength, simplifies the process flows of on-site construction and has the advantages of easy and simple operation, time saving and damage resistance.

Description

technical field [0001] The present invention relates to the improved invention of the overall repair technology of municipal drainage underground pipes, agricultural water underground pipes, industrial water underground pipes, tap water underground pipes, gas underground pipes and other underground pipes. Trenchless repair method for underground pipelines. Background technique [0002] In the past, when the damage of underground pipelines such as municipal drainage underground pipelines, agricultural water pipelines, industrial water pipelines, tap water pipelines, gas pipelines and other underground pipelines was repaired without excavation, the underground pipelines were repaired by the lining pipe flipping method. . [0003] For the non-excavation overall repair of underground pipelines such as municipal drainage pipelines, agricultural water pipelines, industrial water pipelines, tap water pipelines, gas pipelines and other underground pipelines, such as figure 1 As sh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L55/163F16L55/165
Inventor 孙跃平
Owner 管丽环境技术(上海)有限公司
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