Novel technology for intermediate connection of high-voltage cable

Abstract

The invention relates to the technical field of cable connection, in particular to a manufacturing method of an intermediate connector of a high-voltage cable, which comprises the following steps of: fusing a cable conductor core at high temperature, recovering an inner semi-conductive layer, an insulating layer and an outer semi-conductive layer from inside to outside according to the continuous layers of materials with the same performance of a cable body through the structure of the cable body; recovering the structures of the grounding copper net, the inner protection layer, the outer steel armor and the outer protection layer, and performing waterproof treatment on a cable waterproof layer; after the whole middle connector is recovered, various index parameters are tested and detected to reach the standard of the original cable through national standard specifications, and the cable has the physical properties of the original cable, such as tensile property, waterproof property, bending property and impact property; the technology is based on a cable body structure and is formed by seamless connection of cable body materials from inside to outside. The method is completed based on the inside-to-outside structure of the cable, operation is easy, and efficiency is high.

Description

technical field [0001] The technology relates to the technical field of intermediate connection of power high-voltage cables, in particular to a manufacturing method of an intermediate connection head of a high-voltage cable. Background technique [0002] With the continuous and rapid growth of my country's economy, the power consumption is also increasing. At the same time, the urbanization process is accelerating, and the number of cable lines is increasing, gradually replacing high-voltage overhead lines. The length of each reel of the distribution network cable is generally about 600 meters, that is, a straight-through joint should be set at every corresponding distance on the cable line, and the straight-through intermediate joint is often the weakest part of the cable line, which is prone to failure. Therefore, the quality of the straight-through intermediate joint determines an important factor for the safe operation of the cable line. [0003] The main factors that ...

AI Technical Summary

Problems solved by technology

At present, most of the cables used in the domestic distribution network are three-core. Once a breakdown accident occurs at the cable straight-through joint, simple repairs cannot restore the insulation performance of the joint, and a new cable must be replaced as a joint.

In addition, due to the dense arrangement of cables in cable trenches / wells, if a joint on one cable fails and catches fire, other cables will be ignited, which will easily lead to major accidents

Images