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Pipeline non-excavation repair method

A repair method and non-excavation technology, applied in the direction of pipe elements, pipes/pipe joints/pipe fittings, mechanical equipment, etc., can solve the problems of long construction period and high cost of pipe network, and achieve long curing time and no joint fluidity. Effect

Pending Publication Date: 2021-10-22
广东润球实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The service life of the drainage pipeline is usually 30 to 50 years. After the drainage pipeline reaches the service life, it often needs to be repaired or re-laid with a new pipeline, and the construction period of re-excavating the tunnel and laying the pipeline network is long and the cost is high.

Method used

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  • Pipeline non-excavation repair method

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Effect test

Embodiment 1

[0021] A trenchless repair method for pipelines, comprising the following steps:

[0022] S1. Pipeline desilting: remove silt and obstacles in the pipeline to be repaired, and clean the inner wall of the repaired pipeline; make the pipeline free of foreign matter, silt, and water; when the pipeline is desilted, use high-pressure water to clear it, The silt is cleaned from the pipeline to the inspection well, and then the silt is taken out of the well by machine suction or manpower. When cleaning, do the following treatment to the tree roots: first dredge and then clean, and finally choose an appropriate method to cut the tree roots; to deal with the cement block: use the vibrating nozzle to break the cement block, and then clean it with the cleaning nozzle; Asphalt treatment: use rotating nozzles and cleaning nozzles for cleaning; cleaning of well walls and large-diameter pipe walls: choose rotating nozzles for cleaning.

[0023] S2. Pipeline sealing: air bag sealing or mason...

Embodiment 2

[0027]Partial resin curing repair is repaired by CIPP hot water turning method. The auxiliary lining material is turned over in the old pipe to protect the resin lined pipe. The resin lined hose is sent into the pipe by turning over, and air When pressure or water pressure makes the lining pipe expand, use steam circulation heating to solidify the lining pipe wall, cut off the excess material at the nozzle, and seal it well, forming a new continuous high-strength lining new pipe in the old pipe . Use fiber-reinforced hose or braided hose with impermeable membrane soaked in thermosetting resin as the lining material, turn one end of the hose soaked in resin over and fix it at the entrance of the pipeline to be repaired with a clamp, and then use water pressure or air pressure to make it The resin-soaked inner layer of the soft liner is turned outside and bonded to the inner wall of the old pipe. When the soft lining pipe reaches the end point, immediately inject hot water into...

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Abstract

The invention discloses a pipeline non-excavation repair method. The pipeline non-excavation repair method comprises the following steps that dredging a pipeline; plugging the pipeline; performing pretreatment; and local resin curing and repairing. The pipeline non-excavation repair method has the advantages that the whole pipeline does not need to be excavated to be replaced, repairing can be directly conducted from the inner wall of the pipeline, underground pipelines made of various materials such as cast iron pipes, steel pipes and concrete can be repaired, the pipeline non-excavation repair method can be used for repairing water supply pipelines, sewage pipelines and gas pipelines and can be used for repair industrial pipelines such as chemical industry pipelines, the repairing technology has the advantages of all-weather construction, no joint, good fluidity, adaptability to non-circular section and bent pipe sections and the like, and the resin curing time is long.

Description

technical field [0001] The invention relates to the technical field of pipeline repair, in particular to a trenchless pipeline repair method. Background technique [0002] Urban drainage pipe network is an important infrastructure for urban water pollution prevention and control, urban drainage and flood control. The service life of drainage pipes is usually 30 to 50 years. After the drainage pipes reach their service life, they often need to be repaired or re-laid with new pipes. The construction period and cost of re-excavating tunnels and laying pipe networks are long and high. Contents of the invention [0003] The purpose of the present invention is to solve the shortcomings in the prior art, and propose a non-excavation pipeline repair method. [0004] In order to achieve the above object, the present invention adopts the following technical solutions: [0005] A trenchless repair method for pipelines, comprising the following steps: [0006] S1. Pipeline dredging...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L55/1645F16L55/18
CPCF16L55/1645F16L55/18
Inventor 黄时球
Owner 广东润球实业有限公司