Method for laying cable in pipeline

Abstract

The invention relates to a method for laying a cable in a pipeline. Devices used in the method comprise a pull wire, a plurality of supporting frames and a plurality of hanging vehicles, each supporting frame comprises a circular track, a cylindrical connecting rod is arranged between every two adjacent supporting frames, a first supporting frame is placed in a pipeline, one end of the pull wire is fixed to the corresponding supporting frame, and the connecting rods are connected to the first supporting frame; the multiple supporting frames and the connecting rods are repeatedly connected in sequence, and the previous supporting frame is pushed into the pipeline; the pull wire is fixed on suspension vehicles and the end part of the cable, and the suspension vehicles are suspended on the outer wall of a circular track; one end, far away from the cable, of the traction wire is connected with traction equipment, and the traction equipment pulls the traction wire; the suspension vehicles walk along the circular track and the connecting rods, and the plurality of suspension vehicles are sequentially mounted on the cable until the cable penetrates the pipeline; and then the supporting frames and the suspension vehicles are pulled out of the pipeline to complete cable laying. The method for laying a cable in a pipeline has the effect of being stable in the cable conveying process.

Description

technical field [0001] The invention relates to the technical field of cable laying, in particular to a method for laying cables in pipelines. Background technique [0002] In the pipeline laying project of electric high-voltage cables, due to the thick diameter and heavy weight of high-voltage cables (such as 10kV-500kV cables), it is usually necessary to use a lot of manpower and large machinery such as winches and tractors when the cables are inserted into the pipeline. Traction: The cable is dragged in the pipe, and the friction between the pipe wall and the cable surface is relatively large, which causes the outer insulation layer of the cable to wear and seriously affects its insulation performance. This construction method not only has slow dragging speed and low work efficiency, but also often has problems such as insufficient traction force, and the strong pulling of construction machinery will also cause a certain degree of damage to the interior of the cable. [...

AI Technical Summary

Problems solved by technology

[0004] During the installation process of the above-mentioned cables, the weight of the cables is pressed on multiple conveyors. When the conveyors are walking along the length of the pipeline, the cables are located on the upper part of the conveyors. When the conveyors are walking, the weight of the cables is likely to shift. , causing the cable on the conveyor to touch the pipe, and when the staff continues to pull the cable, it will cause the cable to wear

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