A low-temperature-resistant and crack-resistant power cable

Abstract

The invention discloses a low-temperature-resistant anti-cracking power cable. The cable comprises a rubber skeleton, and the rubber skeleton comprises a serrated-edge-shaped annular skeleton. Each serrated concave corner of the outer side of the annular skeleton is fixedly connected with a V-shaped plate to to form a plurality of quadrilateral cavities; a first wire core and two second wire coresare arranged in the annular skeleton; the first wire core and the two second wire cores are twisted and then coated with a high-density polyethylene protective layer; third wire cores are respectively arranged in the quadrilateral cavities, and the outer side of the rubber skeleton is sequentially coated with a glass fiber woven layer, a heat preservation cotton layer, an aluminum belt interlocking armor layer and a butadiene styrene rubber outer sheath. The serrated-edge-shaped annular skeleton has a very good pressure-resistant buffer effect, and can well protect the wire cores in the skeleton; the V-shaped plate from forms a plurality of quadrilateral cavities to protect the third wire cores in the skeleton, and has very good pressure-resistant, tensile and torsional effects; the internal structure of the cable is more compact and tidy, and the cable is not liable to deform after being used for a long time.

Description

technical field [0001] The invention relates to the technical field of cables, in particular to a low-temperature-resistant and crack-resistant power cable. Background technique [0002] Power cables are cables used to transmit and distribute electric energy. Power cables are often used in urban underground power grids, power station lead lines, internal power supply in industrial and mining enterprises, and underwater transmission lines across rivers and seas. In power lines, the proportion of cables is gradually increasing. Power cables are cable products used to transmit and distribute high-power electric energy in the main line of the power system, including 1-500KV and above various voltage levels and various insulated power cables. [0003] However, there are a lot of shortcomings in the existing power cables. For example, the existing power cables do not have a good low temperature resistance effect, and the cold climate will cause serious damage to the cables, and th...

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Problems solved by technology

[0003] However, there are a lot of shortcomings in the existing power cables. For example, the existing power cables do not have a good low temperature resistance effect, and the cold climate will cause serious damage to the cables, and the existing power cables do not have very good The anti-cracking function of the cable, different climates, or long-term use will cause the cable to crack, so that the cable cannot work well, and seriously reduces the service life of the power cable

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