Crosslinked polyethylene welding type insulated cable joint and manufacturing and installation processes thereof

Abstract

The invention relates to a cross-linked polyethylene fusion-bonded insulated cable joint and its manufacturing and installation process, belonging to the technical field of the electrical industry. It includes a cable, a shielding layer, an inner sheath and an outer sheath from the inside to the outside, the cable includes a conductive layer and an insulating layer from the inside to the outside, and the conductive layer includes a conductor layer and an inner sheath from the inside to the outside. The semiconductor layer, the insulating layer is a cross-linked polyethylene insulating layer formed by melting cross-linked polyethylene insulating tape; the shielding layer is a semi-conductive paint layer; the outer protective layer includes a steel armor, a waterproof layer from the inside to the outside and armor belt. The invention adopts the method of directly melting the cross-linked polyethylene insulating layer with the cross-linked polyethylene tape, so that the manufacturing and installation process of the cross-linked polyethylene fusion-bonded insulating cable joint is very simple and convenient, and the success rate and efficiency are improved .

Description

technical field [0001] The invention relates to a cross-linked polyethylene fusion-bonded insulated cable joint and its manufacturing and installation process, belonging to the technical field of the electrical industry. Background technique [0002] XLPE insulated wires and cables are popular among users because of their excellent electrical properties, allowable operating temperature of conductors up to 90°C, large transmission capacity, simple structure, convenient installation and laying, no drop limit, and especially no risk of fire caused by oil leakage. Welcome. [0003] In the cable manufacturing plant, whether it is in the manufacturing process or the transportation process, there will inevitably be manufacturing defects or due to collisions, the finished or semi-finished products of XLPE insulated power cables will fail to withstand voltage (breakdown) or damage. In this case, the manufacturing plant intelligently saws it into sections, and those finished or semi...

AI Technical Summary

Problems solved by technology

Although the XLPE fusion-bonded insulated cable joint formed by this repair method can also complete the repair and connection of the damaged XLPE insulated power cable, its manufacturing process is quite cumbersome and complicated, requiring high technical participation. Any link may lead to the failure of XLPE fusion-bonded insulated cable joints, which is difficult to manufacture and low in production efficiency, which directly leads to low repair and connection efficiency

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