Low temperature resistant anti-crack rubber sleeve flexible cable used for wind power generation

Abstract

The invention relates to a low-temperature resistant and anti-crack cabtyre flexible cable for the wind power generation and is characterized in that a plasticiser inside a rubber insulation and sheath is a low-temperature resistant plasticizer and is added with 2 to 5 portions of pine tar oil and / or cylinder oil and 3 to 8 portions of coupling agent; the pitch of flexible conductor strands is intertwisted by 8 to 14 times; in the situation of a multiple-core cable, the cable pitch of insulating core is 8 to 10 times. Compared with the prior art, the invention improves the flexility at a low temperature, the anti-crack performance, the mechanical performance at a low temperature and the torsibility of the cable of the rubber insulation and sheath and can satisfy the torsibility requirements of a wind energy cable. The cable of the invention is not cracked in an impact test at a low temperature of 40 DEG C below zero and a flexion test, can maintain the flexility at a very low temperature, satisfies the requirement of the cable used at a low temperature or a maritime climate environment, and can be applicable to the use in the environmental conditions of big difference in environmental temperature, salt mist, moist heat, mould fungus, etc. In addition, an environment-friendly auxiliary material is used and the cable insulation as well as the sheath environment are good; therefore, the invention can satisfy the environment-friendly requirements of PAH such as ROHS and RAHS of the EU.

Description

technical field [0001] The invention relates to a rubber-sheathed flexible cable, in particular to a low-temperature-resistant and crack-resistant rubber-sheathed flexible cable for wind power generation. Background technique [0002] Wind energy has been paid more and more attention due to its advantages such as wide distribution, huge reserves, renewability, and no pollution. my country's wind power industry has maintained a trend of rapid development in recent years. However, the distribution of wind energy is very extensive, coupled with the vast territory of our country, the large difference in wind levels, and the large difference in climate between the north and the south. Anti-mold and three-proof functions; and in the design of wind power generation, in order to avoid frequent deflection of major impellers with the wind, it is usually to make the impeller yaw with the wind, twist for three consecutive weeks, and then re-rotate and reset; and the wind energy cable is...

AI Technical Summary

Problems solved by technology

The low temperature resistance is not enough, the maximum can only reach -20 ℃, and it is easy to crack and damage in low temperature environment; in addition, its torsional performance can not meet the above requirements