Pipe penetrating device and method for large-diameter pipeline

Abstract

The invention relates to a pipe penetrating device and method for a large-diameter pipeline. The device is arranged between the pipe walls of a thick pipe and a thin pipe and comprises a vehicle bodyof an arc structure, walking wheels connected to the convex face of the vehicle body and a pipe clamping device connected to the concave face of the vehicle body. The vehicle body is arranged in the thick pipe in a sliding manner, and the thin pipe is arranged on the concave face of the vehicle body in a lap joint manner. The walking wheels are arranged on the inner wall of the thick pipe in a sliding manner to drive the vehicle body to move in the axial direction of the thick pipe. The pipe clamping device is arranged at the axial end of the vehicle body, and one end of the thin pipe is arranged on the pipe clamping device in a butt joint manner and is clamped by the pipe clamping device. The vehicle body is an arc frame body formed by metal rod connection or an arc plate body formed by bending a metal plate. At least the two columns of walking wheels are arranged in the axial direction of the vehicle body, and the number of each row of walking wheels is at least two. The pipe penetrating device can be suitable for pipe penetrating use of different specifications of anticorrosion pipelines, and pipeline anticorrosive layers are better protected.

Description

technical field [0001] The invention relates to the technical field of pipeline installation, in particular to a large-diameter pipeline threading device and method. Background technique [0002] At present, with the advancement of science and technology and the continuous improvement of environmental protection awareness, the depth of factory prefabrication continues to deepen. Various types of pipeline anticorrosion no longer completely rely on on-site construction, and more choose factory derusting and anticorrosion. The use of factory rust removal and anticorrosion has high construction efficiency and can save construction time. The shot blasting treatment in the workshop is more thorough in rust removal and less pollution. However, for large-diameter pipes, especially pipes with a diameter of 820mm to 2800mm, the transportation cost will increase. In order to reduce transportation costs, casing transportation is often selected, that is, pipes of different diameters ar...

AI Technical Summary

Problems solved by technology

[0003] However, in the process of pipe threading and pumping, it is easy to damage the anti-corrosion layer, which will affect the use and anti-corrosion ability of the pipeline

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