Refractory power flexible cable

Abstract

The invention discloses a refractory power flexible cable. The refractory power flexible cable comprises a cable core consisting of at least one insulated wire core, a refractory layer encircled on the cable core and an external protection layer wrapping the refractory layer in an extruding manner, wherein the insulated wire core comprises a conductor produced by a conductive material and a refractory insulation layer wrapping the outer layer of the conductor in an extending manner, a gap between the insulated wire core and the refractory layer is filled with a high-temperature filling rope, the refractory layer adopts a ceramic fireproof and refractory silicone rubber and high temperature-resistant glass fiber cloth composite belt layer, and double layers are overlapped and bound on the cable core in opposite positions. The cable disclosed by the invention is excellent in electric insulation performance, good in softness, resistance to high temperature and low temperature, and excellent in fireproofness and fire resistance; the cable is further simple in processing technology and convenient to transport and mount.

Description

technical field [0001] The invention relates to electric wires and cables, in particular to a power flexible cable with fire-proof and fire-resistant functions. Background technique [0002] With the development of modern power industry and the rapid growth of urban population, high-rise buildings, hotels, large supermarkets, hospitals, subways, power plants, nuclear power plants, warehouses, and airports continue to increase. Fire-resistant and fire-resistant cables are widely used in these important public places . And with the proposal of RoHS environmental directives by the European Parliament and the Council of the European Union, people's environmental protection requirements for cables are also getting higher and higher. [0003] At present, there are two main types of fire-resistant and fire-resistant cables in my country's cable industry: one is a relatively common composite fire-resistant cable with fire-resistant mica tape wrapped and insulated; the other is a mi...

AI Technical Summary

Problems solved by technology

Mineral insulated metal sheathed cables require special production equipment, large capital investment, high production costs, and the outer sheath is made of metal, the product has a large specificity, small bending radius, and difficult transportation, installation and laying; mica tape wrapped fire-resistant cables It cannot pass the spray and vibration test. Many existing mica tapes are relatively thick, have high adhesive content, and high hardness. The mica sheets are easy to fall off during the wrapping or bending process, and there are many types of mica tapes, which are good or bad. uneven, poor stability, it is difficult to guarantee the quality of its fire resistance

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