A twist-resistant fire-resistant power cable

Abstract

The invention discloses a torsion-resistant and fire-resistant power cable, comprising: a cable core, the cable core is composed of a conductor, an insulating layer coated on the outer periphery of the conductor, a mica tape wrapping layer and an inner extruded cladding layer, wherein the inner extruded cladding layer There are multiple sets of elastic connectors formed on the outer periphery during the extrusion process. The elastic connectors are evenly distributed along the outer ring surface of the inner extrusion cladding and the length of the elastic connectors is consistent with the length of the inner extrusion cladding. At the same time, each set of elastic connectors The elastic surface far away from the inner extruded cladding is on the same annulus, and this annulus is defined as the top annulus; the elastic connector is provided with grooves on the elastic surface far away from the inner extruded cladding, and the grooves are provided with multiple groups and along the distributed along the length direction of the elastic connector; the top ring surface is covered with a wrapping layer, and the wrapping layer is formed by a wrapping tape wrapped in each groove, and the thickness of the wrapping layer is smaller than the depth of the groove; The outer periphery of the cladding is covered with an extruded cladding. The present invention can improve the anti-torsion ability of the cable through the arrangement of the elastic connector, and has strong fire resistance.

Description

technical field [0001] The invention relates to the technical field of power transmission, in particular to a torsion-resistant and fire-resistant power cable. Background technique [0002] All countries in the world have turned their attention to nuclear energy, photovoltaic, wind energy and other clean energy, and the development of renewable resources has become the energy strategy of most countries. With the closure of a large number of photovoltaic companies, most countries resist nuclear energy, and the cleanliness, renewability, and extensive resources of wind energy have attracted much attention, making it the largest and most mature technology among all new energy sources. The most promising power generation model for commercial development. At the same time, it also promotes the development of the cable industry supporting wind power generation. However, due to the harsh environment of the wind field, and the power cable is twisted with the swing of the impeller,...

AI Technical Summary

Problems solved by technology

However, due to the harsh environment of the wind field, and the power cable is twisted with the swing of the impeller, the cable core will be broken if it is affected by the twist for a long time, and the service life of the cable will be shortened.

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