Old pipeline repairing process

A pipeline repair and process technology, applied in the direction of pipe elements, pipes/pipe joints/pipe fittings, mechanical equipment, etc., can solve the problems of high cost, long time required, poor lining performance, etc., to improve the success rate and shorten the construction. time, the effect of ensuring the quality of the repair

Inactive Publication Date: 2012-11-21
HENAN ZHONGTUO PIPELINE ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The CIPP lining method is one of the commonly used processes for the repair of old pipelines. It has the advantages of less negative impact on the repair and has a very weak impact on the ground, the environment, and the surrounding underground pipelines. However, the current CIPP lining method needs to be fabricated on the construction site. The hose takes a long time and cannot control the curing time well. The performance of the lining after curing is poor and the cost is high

Method used

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Examples

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Embodiment Construction

[0013] The old pipeline repair process, first, roll the composite sandwich felt into a barrel according to the required size, soak the barrel-shaped composite sandwich felt with UV resin to form a hose, in which the composite sandwich felt is divided into three layers, and the outer layer is multi-axial Glass fiber yarn, the middle layer is a resin diversion layer, the inner surface layer is a shear mat, and the inner and outer membranes are respectively pasted on the inner and outer surfaces of the composite sandwich felt; the hose is stored in an environment lower than 15°C;

[0014] Then lay a layer of plastic film on the lower part of the old pipeline, drag the hose with the inner and outer membranes removed into the old pipeline with a clean inner wall; put the UV lamp into the hose, and connect the traction rope and power supply;

[0015] Secondly, seal both ends of the hose with heads, pour nitrogen gas into the hose to make the hose fit the old pipe, use a traction rope...

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PUM

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Abstract

The invention relates to an old pipeline repairing process. The old pipeline repairing process comprises the steps of: first, soaking a barrel composite sandwich felt in UV resin to form a hose, and sticking an inner film and an outer film respectively on the inner and outer surfaces of the composite sandwich felt; then, dragging the hose into the oil pipeline with cleaned inner wall; placing a UV (ultraviolet) lamp in an end socket at one end of the hose, and connecting a traction rope and a power supply; and second, sealing both ends of the hose by the end socket, and pulling the UV lamp to move slowly to irradiate the hose by the traction rope to cure the hose. The hose provided by the invention is made of composite sandwich felt soaked in the UV resin, the curing time of the hose can be controlled, and the hose can be manufactured in a workshop, so that the construction time in a construction site is shortened, the curing time and speed of the UV resin can be effectively controlled, the success rate is improved, and the liner repairing quality is ensured.

Description

technical field [0001] The invention relates to an old pipeline repair technology. Background technique [0002] The CIPP lining method is one of the commonly used processes for the repair of old pipelines. It has the advantages of less negative impact on the repair and has a very weak impact on the ground, the environment, and the surrounding underground pipelines. However, the current CIPP lining method needs to be fabricated on the construction site. The hose takes a long time, and the curing time cannot be well controlled. The performance of the inner lining after curing and molding is poor, and the cost is high. Contents of the invention [0003] The purpose of the present invention is to provide an old pipeline repair process that can effectively control the curing time, has high success rate, short construction period, and good performance of the lining after curing. [0004] Technical scheme of the present invention is: [0005] The old pipeline repair process, f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L55/162
Inventor 王永红葛艳超张严普王士委王兴磊
Owner HENAN ZHONGTUO PIPELINE ENG
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