Wire and cable outer insulation layer repair mold

Abstract

The invention discloses a mold for repairing the outer insulation layer of electric wires and cables, which includes a cleaning part, a repairing part and a trimming part. The cleaning part, the repairing part and the trimming part are each an independent device. For repair, the trimming department cuts off the repair margin. The cleaning part of the present invention will first effectively clean the damaged part of the cable insulation layer, and most impurities will be eliminated in the cleaning part. After cleaning, remove the cleaning part and install the repairing part on the damaged part of the cable. The repairing part forms a sealed cavity at the damaged part and heats the insulating layer. While heating, the glue filling cavity will inject melt into the sealed cavity, and the insulating After the layer is heated and melted, the repairing part will transfer the metal ore and some impurities to the repairing surplus part by rotating. The trimming part trims the repair allowance and deburrs the surface of the cable.

Description

technical field [0001] The invention relates to the technical field of cable repair, in particular to a repair mold for the outer insulating layer of electric wires and cables. Background technique [0002] With the rapid development of power cable buried laying projects, higher requirements are put forward for cable protection. The cable protection sleeve is made of polyethylene PE and high-quality steel pipes, which are pre-treated by sandblasting and shot blasting, dipped in plastic or coated, and heated and cured. Craft made. It is the most commonly used electrical insulating tube for protecting wires and cables. It is widely used because of its good insulation performance, high chemical stability, no rust, no aging, and adaptability to harsh environments. However, cables located in mountainous areas are often damaged by landslides during heavy rains, and the debris of landslides will cause damage to the cable surface when it rubs against the surface of the cable. Tra...

AI Technical Summary

Problems solved by technology

However, cables located in mountainous areas are often damaged by landslides during heavy rains. Landslide debris will cause damage to the cable surface when it rubs against the surface of the cable

Traditional cable insulation repair tools mainly fill the damage by adding colloid to the damaged part when repairing the cable. This repair method will cause uneven material density in various parts of the insulation layer.

Due to the damage of the insulating layer caused by landslides, a large amount of impurities are often retained in the damaged area, and even metal minerals in the mountain body are retained in the damaged area. Traditional repair tools lack the cleaning function and cannot effectively remove the impurities in the damaged area.

If there are metal minerals left in the insulating layer after the damage is repaired, the impedance of the insulating layer will be greatly reduced, resulting in breakdown accidents

On the other hand, traditional repair tools cannot effectively remove the burrs on the repaired part after the repair is completed. If there are too many burrs on the surface of the cable buried underground, more small liquid droplets will accumulate on the surface of the cable. Excessive moisture will cause the cable to The interior is more prone to water tree aging

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