A anti-torsion and anti-fatigue long-life wind power cable and its preparation method

Abstract

The invention discloses an anti-torsion anti-fatigue long-life wind power cable and a manufacturing method thereof. The cable is sequentially provided with a high-strength layer, a supporting layer, alining, an insulating layer and a conductor from outside to inside, wherein a toughening layer is further arranged between the high-strength layer and the supporting layer; a nylon PA66 layer for solidified with polyvinyl chloride mortar is arranged at the junction of the toughening layer and the supporting layer; the high-strength layer is made of copper wires, silicon carbide ceramic fibers andPP flat wires in a mass ratio of 1: (3.5-5):(75-90) by the steps of performing uniform mixing and braiding, and sealing by vulcanized rubber; the supporting layer is made of graphitized carbon fibers; and the toughening layer is formed by uniformly mixing polyvinyl chloride mortar and a condensation type single-component room-temperature vulcanized silicone rubber and carrying out curing and vulcanizing. The anti-torsion anti-fatigue long-life wind power cable can adapt to relatively high wind power, can bear a relatively large torsion moment, can tolerate long-term reciprocating fatigue stress, and is relatively slow in aging.

Description

technical field [0001] The invention relates to the field of electrical components, in particular to a torsion-resistant and fatigue-resistant long-life wind power cable and a preparation method thereof. Background technique [0002] A cable is usually a rope-like cable twisted by several or groups of conductors (at least two in each group). Each group of conductors is insulated from each other and is often twisted around a center. Highly insulating overlay. The cable has the characteristics of internal electrification and external insulation. [0003] The insulating layer is to evenly and hermetically wrap a layer of non-conductive material around the cable conductor, such as: resin, plastic, silicone rubber, PVC, etc., but these materials are limited by their essential properties, and their heat resistance and insulation properties are relatively weak . [0004] Among the relevant patents that have been applied in China, the patent "A Flame Retardant Tensile Flexible Ca...

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Problems solved by technology

[0003] The insulating layer is to evenly and hermetically wrap a layer of non-conductive material around the cable conductor, such as: resin, plastic, silicone rubber, PVC, etc., but these materials are limited by their essential properties, and their heat resistance and insulation properties are relatively weak

[0004] Among the relevant patents that have been applied in China, the patent "A Flame Retardant Tensile Flexible Cable" (application number: 201610040262.X, publication date: 2016-05-04) discloses a flexible cable with flame retardant capability. However, it uses five layers of metal armor. Since it is a circular tubular armor layer, its bendability is inevitably poor, the minimum bending radius is large, the comprehensive mechanical properties are poor, the fatigue resistance is poor, and the torsion resistance is poor. Except for the material on the surface of the core material, the insulating material is mainly conventional polyester fiber. This kind of material has general insulation performance and is not even used as an insulating material. It is easily corroded by acid and alkali, has poor water resistance, is easy to age, and has a short service life.

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