Large-diameter underground pipeline non-excavation rehabilitation method

A technology for underground pipelines and repair methods, applied in the direction of pipe elements, pipes/pipe joints/pipes, mechanical equipment, etc., can solve the problem of neglecting the research and development of complete sets of equipment, and achieve the effect of wide applicable temperature range, accelerated curing, and high degree of automation

Active Publication Date: 2016-03-02
WUXI CHENHUA COMPOSITE MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the use of trenchless pipeline repair technology in my country is still a small part. On the one hand, it is because there has been a lack of mature materials in China to support the large-scale promotion and application of this technology in China. Research and development of complete sets of equipment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The steps of the technical solution of the present invention are as follows: 1. Collection of internal information of the pipeline; 2. Cleaning of the inner wall of the pipeline; 3. Inspection of the interior of the pipeline; 4. Carrying out leak repair treatment on the damaged part of the pipeline, and cleaning the pipeline by flattening the inner wall; 5. Turning over the lining, Send the CIPP lined hose into the pipeline with a turning device; 6. Use unsaturated polyester solution as the adhesive to heat and solidify the lined hose; 7. After the heating is completed, perform forming and cooling treatment on the pipeline; 8. For The repaired pipeline will be inspected and accepted.

[0020] 1. Collection of internal information of the pipeline: In this step, the damaged pipeline is first isolated and drained, and then the internal information of the pipeline is collected through a special pipeline photography system.

[0021] 2. Cleaning of the inner wall of the pipel...

Embodiment 2

[0029] The steps of the technical solution of the present invention are as follows: 1. Collection of internal information of the pipeline; 2. Cleaning of the inner wall of the pipeline; 3. Inspection of the interior of the pipeline; 4. Carrying out leakage repair treatment on the damaged part of the pipeline, and cleaning the pipeline by flattening the inner wall; 5. Turning over the lining, Send the CIPP lined hose into the pipeline with a turning device; 6. Heat and solidify the lined hose; 7. After the heating is completed, shape and cool the pipeline; 8. Test and accept the repaired pipeline.

[0030] 1. Collection of internal information of the pipeline: In this step, the damaged pipeline is first isolated and drained, and then the internal information of the pipeline is collected through a special pipeline photography system.

[0031] 2. Cleaning of the inner wall of the pipeline: Use special cleaning equipment to remove the sediment and iron filings in the pipeline, and ...

Embodiment 3

[0039] The steps of the technical solution of the present invention are as follows: 1. Collection of internal information of the pipeline; 2. Cleaning of the inner wall of the pipeline; 3. Inspection of the interior of the pipeline; 4. Carrying out leakage repair treatment on the damaged part of the pipeline, and cleaning the pipeline by flattening the inner wall; 5. Turning over the lining, Send the CIPP lined hose into the pipeline with a turning device; 6. Heat and solidify the lined hose; 7. After the heating is completed, shape and cool the pipeline; 8. Test and accept the repaired pipeline.

[0040] 1. Collection of internal information of the pipeline: In this step, the damaged pipeline is first isolated and drained, and then the internal information of the pipeline is collected through a special pipeline photography system.

[0041] 2. Cleaning of the inner wall of the pipeline: Use special cleaning equipment to remove the sediment and iron filings in the pipeline, and ...

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PUM

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Abstract

The invention relates to a large-diameter underground pipeline non-excavation rehabilitation method. The method comprises the following steps: (1) collecting the internal information of a pipeline; (2) cleaning the inner wall of the pipeline; (3) detecting the interior of the pipeline; (4) performing leak repairing treatment of a damaged part in the pipeline, leveling the inner wall and cleaning the pipeline; (5) turning a lining, and feeding a CIPP lining hose into the pipeline with a turning equipment; (6) heating and curing the lining hose by using an unsaturated polyester solution as an adhesive; (7) performing forming cooling treatment of the pipeline after heating is finished; and (8) detecting and accepting the rehabilitated pipeline.

Description

technical field [0001] The invention relates to a method for repairing a pipeline, in particular to a method for repairing a large-diameter underground pipeline without excavation. Especially suitable for the repair of underground pipelines Background technique [0002] With the rapid development of urban construction, the number of underground pipelines worldwide is increasing day by day. In these pipelines that are built at different times and run day and night, problems such as damage, fouling, and corrosion often occur, which lead to a decrease in pipeline transportation capacity, and even cause leakage, explosion, blockage, ground subsidence, and "the city looks at the sea" and other incidents. It represents and tests the "conscience of the city". [0003] Excavation has been used in the past for pipeline replacement and repair in my country, but this method consumes too much manpower and material resources due to its large amount of work, and is increasingly unable t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L55/165
CPCF16L55/1651
Inventor 黄文迎李双
Owner WUXI CHENHUA COMPOSITE MATERIALS CO LTD
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