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Method for Locating Defect Points in Trenchless Repair of Underground Pipelines

A technology for underground pipelines and positioning methods, which is applied to pipe components, special pipes, pipes/pipe joints/fittings, etc., can solve the problems of high cost, low efficiency, time-consuming, etc., save time and times, simplify the repair process, improve The effect of work efficiency

Active Publication Date: 2019-09-10
浙江景迈环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Apparently, the above-mentioned method of integrally repairing damaged underground pipelines and inspection wells after excavation is labor-intensive, time-consuming, inefficient and expensive.

Method used

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  • Method for Locating Defect Points in Trenchless Repair of Underground Pipelines
  • Method for Locating Defect Points in Trenchless Repair of Underground Pipelines
  • Method for Locating Defect Points in Trenchless Repair of Underground Pipelines

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1a

[0046] A method for locating defects in underground pipelines without excavation repairing, comprising the following steps:

[0047] pipe cleaning

[0048] Step1.1, determine the underground pipeline 91 of the section that needs to be repaired, set up roadblocks 21 and warning signs 22 around the two drainage wells 1 that communicate with the underground pipeline 91 of this section, (for the convenience of expression, the two drainage wells 1 are named respectively below the first drainage well 11 and the second drainage well 12);

[0049] Step1.2, manually enter the first drainage well 11 and the second drainage well 12, and separate the underground pipeline 91 that needs to be repaired and the underground pipeline 91 that does not need to be repaired through the sealing plate 23 with the water hole;

[0050] Step1.3, the dredging vehicle 3 is parked near the first drainage well 11, the dredging nozzle 31 is sent into the pipe mouth of the underground pipeline 91 by the firs...

Embodiment 1b

[0066] Embodiment 1b provides a positioning method for non-excavation repair defect points of underground pipelines. The difference between the embodiment 1b and the embodiment 1a lies only in the threading manner of the traction rope 52 .

[0067] Step1.4, repeat step1.3 for 1~3 times to complete the cleaning of the garbage inside the underground pipeline 91. During the last cleaning process, tie the traction rope 52 to the dredging nozzle 31, and drive the traction rope 52 through the dredging nozzle 31. located in the underground pipeline 91;

[0068] Step1.5 Untie the traction rope 52 and dredge the nozzle 91.

[0069] Step2.2 Send the remote control car 4 from the first drainage well 11 into the underground pipeline 91, control the remote control car 4 to walk inside the underground pipeline 91, and transmit the picture to the ground through the camera 41;

[0070] Step2.5 Repeat Step2.4 and Step2.5, determine the defect points 94 inside several pipelines on the connect...

Embodiment 2a

[0073] A method for locating defects in underground pipelines without excavation repairing, comprising the following steps:

[0074] pipe cleaning

[0075] Step1.1, determine the underground pipeline 91 of the section that needs to be repaired, set up roadblocks 21 and warning signs 22 around the two drainage wells 1 that communicate with the underground pipeline 91 of this section, (for the convenience of expression, the two drainage wells 1 are named respectively below the first drainage well 11 and the second drainage well 12);

[0076] Step1.2, manually enter the first drainage well 11 and the second drainage well 12, and separate the underground pipeline 91 that needs to be repaired and the underground pipeline 91 that does not need to be repaired through the sealing plate 23 with the water hole;

[0077] Step1.3, the dredging vehicle 3 is parked near the first drainage well 11, the dredging nozzle 31 is sent into the pipe mouth of the underground pipeline 91 by the firs...

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Abstract

The invention discloses a positioning method of underground pipe non-excavation repair defect points, and solves the problem of a difficulty how to determine defect points of underground pipes alwaysin the repair process caused by people incapable of entering the pipes to examine the defect points. The positioning method comprises the following steps: a dredging car is cleaned; a connecting ropeis arranged on a remote control car provided with a camera, and the defect points in the pipes are searched through the camera; a first positioning mark is arranged in the position, positioned in an opening of a drainage well, of the connecting rope; a positioning rope is bound on a pipe repair airbag, and is provided with a second positioning mark corresponding to the first positioning mark; thesurface of the pipe repair airbag is coated with a repair material; after the second positioning mark is positioned in the opening of the drainage well, the pipe repair airbag is used for repair; andmultiple defect points can be once determined, and can be gradually repaired, so that the time and the times of the remote control car searching the defect points are saved, the working efficiency isimproved, and the repair flow is simplified.

Description

technical field [0001] The invention relates to pipeline repair, in particular to a method for locating defects in underground pipelines without excavation. Background technique [0002] In the past, when municipal drainage pipes, agricultural water, industrial water, tap water pipes, gas pipes and other underground pipes and inspection wells were damaged, in order to repair the damaged section, it was usually necessary to excavate the damaged section of the above-mentioned pipeline. , to replace the damaged section of pipeline. Apparently, the above-mentioned method of overall repairing damaged underground pipelines and inspection wells after excavation is labor-intensive, time-consuming, low in efficiency, and high in cost. [0003] In recent years, some people have developed and used in practical applications a non-excavation overall repair method for the overall repair of the above-mentioned damaged underground pipelines and inspection well sections. Such as figure 1 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L55/30F16L55/48F16L55/1645F16L101/12F16L101/30F16L101/60
Inventor 周逸汪武忠
Owner 浙江景迈环境科技有限公司
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