A kind of radial expansion concave pipe maintenance device

Abstract

The invention relates to a radial stretching type concave pipe maintenance device used for reshaping repair construction of instable pipelines, locally deformed pipelines and deformed barrels. Through the technical scheme, an outer barrel is arranged outside an inner barrel, the inner barrel is arranged on a substrate, the substrate is sleeved in a front end cover, a hydraulic motor is arranged on the substrate, a first T-shaped groove is formed in the radial direction of the front end cover, reshapers are arranged in the radial direction of the front end cover, front oil cylinders are arranged between the front end cover and the reshapers, a second T-shaped groove is formed in the radial direction of a rear end cover, slips arranged in the radial direction of the rear end cover, rear oil cylinders are arranged between the rear end cover and the slips, one end of a middle oil cylinder is arranged at the central position of the substrate, and the other end of the middle oil cylinder is fixed in the outer barrel through a mounting plate. The slips and the reshapers are driven by the independent oil cylinders, the radial stretching distance can be adjusted independently, the rebounding of deformed parts of a pipeline can be taken into account in the reshaping process, and the reshaping effect is good.

Description

technical field [0001] The invention relates to a radially expanding concave pipe repair device, which is used for plastic repair construction of unstable pipes, partially deformed pipes and deformed cylinders. Background technique [0002] In the transportation of fluid media, compared with tank transportation, pipeline transportation has the advantages of large transportation volume, continuous transportation, and low operating costs, and is widely used in the transportation of fluids such as oil, water, and gas. Usually, pipelines are laid underground. Under special conditions such as landslides, debris flows, and heavy-load extrusion, the pipelines will be squeezed and deformed, and even large deformations of instability will occur. Deformed pipelines seriously affect medium transportation and pipeline safety. At present, there is no feasible repair technology for deformed pipelines, and only the method of cutting and replacing deformed pipelines can be used for maintena...

AI Technical Summary

Problems solved by technology

Deformed pipelines seriously affect medium transportation and pipeline safety. At present, there is no feasible repair technology for deformed pipelines. The only way to repair deformed pipe sections is to cut and replace them.

This repair method usually requires medium stoppage, long operation time and high maintenance cost

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