Old pipeline restoration framework supporting repair method

Abstract

The invention provides an old pipeline restoration framework supporting repair method. The method comprises the steps that S1, a netlike pipe framework with an outer diameter smaller than the inner diameter of a pipeline is selected, and an elastic material is arranged at the outer side of the netlike pipe framework in a sleeving mode; S2, the netlike pipe framework is arranged outside an expansion and contraction device in a sleeving mode, the expansion and contraction device is adopted to tightly support the netlike pipe framework, and the expansion and contraction device and the netlike pipe framework are jointly moved to a damaged position in the pipeline; S3, the expansion and contraction device is expanded to open the netlike pipe framework in a supporting mode; and S4, the expansionand contraction device is contracted to separate from the netlike pipe framework and then is moved out of the pipeline. The pipeline repair method is more convenient to operate; the expansion and contraction device is adopted to move the netlike pipe framework to the damaged position of the pipeline, and then the netlike pipe framework is opened in a supported mode through the expansion and contraction device; the pipeline is not prone to damage again after being repaired, and elastic rubber is arranged at the outer side of the pipeline in a sleeving mode, so that the pipeline is corrosion-resistant and long in service life; and manpower and material resources are saved, and pipeline repair cost is lowered.

Description

technical field [0001] The invention relates to the technical field of pipeline repair, in particular to a method for repairing old pipelines with rounded skeleton support. Background technique [0002] When the pipeline is damaged, it needs to be repaired. The existing pipeline repair technology has the following four methods: [0003] 1. Diameter reduction replacement: replace the original pipe with a pipe whose outer diameter is smaller than the previous pipe. The disadvantage of this method is that the replaced pipe space is much smaller than the previous space, resulting in a reduction in displacement. [0004] 2. Light curing, point repair: The damaged part is filled and repaired by resin. The disadvantage of this method is that the resin is easy to fall off after repair, and the maintenance time and effect are not ideal, which cannot solve the problem of service life after repair. [0005] 3. Water turning: Water turning is a lining method. After a solid slurry bag i...

AI Technical Summary

Problems solved by technology

[0003] 1. Diameter reduction replacement: replace the original pipe with a pipe whose outer diameter is smaller than the previous pipe. The disadvantage of this method is that the replaced pipe space is much smaller than the previous space, resulting in a reduction in displacement.

[0004] 2. Light curing, point repair: the damaged part is filled and repaired by resin. The disadvantage of this method is that the resin is easy to fall off after repair, and the maintenance time and effect are not ideal, which cannot solve the problem of service life after repair.

[0005] 3. Water turning: Water turning is a lining method. After a solid slurry bag is sent into the pipeline, resin is injected into the solid slurry bag, and the resin is saturated and then cooled and solidified. The disadvantage of this method is that it is easy to delamination, rupture, collapse

[0006] 4. Recirculation of small-diameter old pipes: the disadvantage of this method is that it is difficult to operate, and the operation is difficult

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