Mobile monitoring type flexible cable with low-smoke zero-halogen scandium-aluminum alloy conductor for coal mine

Abstract

The invention discloses a mobile monitoring type flexible cable with a low-smoke zero-halogen scandium-aluminum alloy conductor for a coal mine, relating to the technical field of cables. The mobile monitoring type flexible cable comprises an external protective jacket, power line cores and an internal protective jacket; the power line cores are formed by sequentially pressing and wrapping an insulating and shielding layer, an insulating layer and a conductor shielding layer; the internal protective jacket is woven with metal fibers added to a low-smoke zero-halogen rubber which uses ethylene-propylene diene copolymer as a base material; the three power line cores are stranded and are wrapped into a cable core by means of the internal protective jacket; a semiconductor wrapping layer, an insulating wrapping tape and the external protective jacket are arranged outside the cable core in sequence; and three monitoring line cores are equally distributed in the semiconductor wrapping layer along the circumferential direction of the cable. The cable is simple in design and good in flexibility; the conductor line core of the cable is not easy to break; the cable has the characteristics of being resistant in creep deformation, high in flexibility, strong in extension, low in rebounding, good in connection stability and good in conductivity; no toxic gas is released and the cost is reduced greatly.

Description

technical field [0001] The invention relates to cables, in particular to a low-smoke halogen-free scandium-aluminum alloy conductor movement monitoring flexible cable for coal mines. Background technique [0002] Coal is a mineral resource in nature. At present, my country's coal mining industry has entered the era of electrification. Coal mine cables are used a lot. The main component of the cable conductor is copper, accounting for about 70% of the total copper consumption. However, my country's copper resources are very short. With the depletion of China's copper mine resources, 80% of China's copper mines need to be imported, which is highly dependent. With the rising price of copper, replacing copper with aluminum is an inevitable trend in the development of wire and cable. More than 80% of the wires and cables in France are aluminum conductors, and the aluminum conductors in Japan also account for more than 50%. my country's aluminum resources are very rich, but the ...

AI Technical Summary

Problems solved by technology

[0003] In the past, pure aluminum used as a wire and cable conductor had many shortcomings, and it was rarely used for insulating cores. It was even more difficult to draw thinner wires for wiring, magnet wires, and communication cables.

Because the strength and elongation of aluminum cannot meet the requirements, aluminum alloys at home and abroad are basically used as overhead wires, and are rarely used to prepare cable insulation cores. Sometimes coal mines release a lot of smoke and poisonous smoke when cables burn. Gas absenteeism will cause poisoning and death. So far, there is no conductive material with excellent electrical conductivity, low price, and releases a small amount of smoke when burning, and no toxic gas is released. It is used as a cable for coal mines.

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