Flexible oil-resistant waterproof medium-voltage cable

Abstract

The invention discloses a flexible oil-resistant waterproof medium-voltage cable, which comprises a soft copper conductor at the center, and a semi-conductive ribbon layer, an inner semi-conductive shielding layer, an insulating layer, an outer semi-conductive shielding layer, a metal main shielding layer, a polyester ribbon and an outer protective sleeve which are sequentially coated from the soft copper conductor to the outer layer, wherein the semi-conductive ribbon layer wraps the soft copper conductor by adopting an interval wrapping technology; the inner semi-conductive shielding layer,the insulating layer and the outer semi-conductive shielding layer are three-layer co-extruded; and the metal total shielding layer and the polyester cable tie layer are arranged outside the three-layer co-extrusion, and the extruded outer sheath layer is arranged on the outermost layer. The flexible oil-resistant waterproof medium-voltage cable provided by the invention has the advantages of goodflexibility, oil resistance, water resistance, excellent mechanical resistance, convenience in installation, movement and maintenance, strong large-current overload resistance and safety and reliability in operation, can meet the matching application requirements of modern military vehicle-mounted equipment, ships, high-speed rails, mines, through tunnels, subway construction, nuclear power engineering, oil exploitation and other related large mobile electrical equipment, and has excellent electrical performance.

Description

technical field [0001] The invention relates to the technical field of power cables, in particular to a flexible oil-resistant waterproof medium voltage cable. Background technology [0002] In recent years, China's military vehicle industry, ships, high-speed railway construction, nuclear power technology, tunnel engineering, oil production and other industries have developed rapidly, and the development field of all kinds of heavy mobile equipment has been expanding. The working voltage of the existing mobile electrical supporting cables for power supply can no longer meet the supporting requirements of the mobile heavy equipment system, rising from low voltage to medium voltage power supply, In order to better support the transmission circuit of heavy mobile construction equipment; Due to this kind of high voltage cable, there is no supporting production in China; At present, only a few cable enterprises in developed countries can produce in the world, and all domestic demand ...

AI Technical Summary

Problems solved by technology

[0002] In recent years, my country's military vehicles, ships, high-speed rail construction, nuclear power technology, tunnel engineering, oil extraction and other industries have developed rapidly, and the development field of various heavy mobile equipment has continued to expand. It can no longer meet the supporting requirements of mobile heavy equipment systems. Only by upgrading from low voltage to medium voltage power supply can it better support the transmission circuits of heavy mobile construction equipment; due to such high-voltage cables, there is no supporting production in China. ; At present, only a few cable companies in developed countries can produce in the world, and domestic demand depends entirely on imports. Due to the limitations of the safety, reliability and tracking service of the import of flexible medium-voltage cable products, it restricts my country's development of this product. bottleneck

At present, domestic medium-voltage cable products of 3KV and below are XLPE insulated cables, which can only be used as flexible medium-voltage cables for fixed laying and heavy-duty mobile equipment. The characteristics of this level of flexible medium-voltage cable structure products cannot Meet the electrical supporting construction needs of heavy mobile equipment

However, there is no research and development report for cables for mobile supporting projects below 10KV and medium voltage.

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