Novel tensile special cable

Abstract

The invention discloses a novel tensile special cable, and the cable comprises at least one conductor unit, a tensile cable and a filling layer. The conductor unit comprises a cable core and a split-phase insulating isolation layer, wherein the split-phase insulating isolation layer is set around the cable core. The tensile cable is located at the center of the cable, and the filling layer is disposed outside the tensile cable. The conductor units are arranged around the tensile cable, and are distributed in the filling layer. One side, far from the tensile cable, of the filling layer is provided with a fireproof isolation layer, and one side, far from the tensile cable, of the fireproof isolation layer is provided with a reinforcing layer. One side, far from the fireproof isolation layer,of the reinforcing layer is provided with an impact-resistant layer, and one side, far from the reinforcing layer, of the impact-resistant layer is provided with an outer protection sheath. The reinforcing layer comprises a flame-retardant oxygen isolating layer and an armored layer wrapping the flame-retardant oxygen isolating layer in an annular manner.

Description

technical field [0001] The invention relates to the technical field of electric wires and cables, in particular to a novel tensile special cable. Background technique [0002] The full name of aramid fiber is "polyphenylene phthalamide", and it is Aramid fiber in English. It is a new type of high-tech synthetic fiber with excellent properties such as ultra-high strength, high modulus, high temperature resistance, acid and alkali resistance, and light weight. , its strength is 5 to 6 times that of steel wire, its modulus is 2 to 3 times that of steel wire or glass fiber, its toughness is 2 times that of steel wire, and its weight is only about 1 / 5 of that of steel wire. Decomposes, does not melt. It has good insulation and anti-aging performance, and has a long life cycle. The discovery of aramid fiber is considered to be a very important historical process in the material industry. [0003] With the rapid development of society, cables, as an important product of electric...

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Problems solved by technology

[0003] With the rapid development of society, cables, as an important product of electric energy transmission, have also obtained rapid and effective development. The fireproof cables in the prior art are mainly composed of outer sheath layers, metal conductors, fire-resistant layers and flame-retardant filling materials. Although The conduction function can be realized at a relatively certain temperature and degree of ignition, but the products produced by the current cable technology have poor stability in use, and the fire prevention effect is not obvious, and the impact resistance and compression resistance are very poor. It affects the applicability of the cable; moreover, most of the current cables are relatively simple in structure, and are prone to moisture, corrosion, impact, and pressure damage in some special occasions, and their service life is not long. Among them, most of the cable protection is composed of bimetallic steel strips or steel wires, usually one layer. When used in some environments, the protection of the cable core is not enough, especially when it is subjected to external impact pressure, it is easy to damage the cable. Core, affect the normal use of the cable

Moreover, the cost of erecting poles in some special occasions is relatively high, which requires a cable with better tensile resistance to reduce the cost of cable erection

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