Crosslinked polyethylene insulated power cable

Abstract

The invention relates to a crosslinked polyethylene insulated power cable, which comprises a plurality of fan-shaped wire cores which are uniformly distributed along the peripheral direction at intervals; filler rods are arranged between the adjacent fan-shaped wire cores and at the distribution center of the plurality of fan-shaped wire cores; an internal lining layer, an outer fire-resistant layer, a galvanized steel wire armor, a wrapping tape layer and an outer sheath sequentially coat the outside of the fan-shaped wire cores from inside to outside; a filler is arranged between the internal lining layer and the fan-shaped wire cores; and each fan-shaped wire core comprises a conductor in fan-shaped distribution, an inner fire-resistant layer coating the outside of the conductor, and aninsulating layer coating the outside of the inner fire-resistant layer. The filler rods are arranged between the wire cores, so that a fire caused by friction is effectively avoided, the safety of the internal structure of the cable is ensured, buffer shock absorption between the wire cores can be achieved and the crosslinked polyethylene insulated power cable has excellent bending and twisting resistance; and through the arrangement of multiple layers of fireproof materials, the heat resistance and the fire resistance of the cable are greatly improved and the personal safety and the safety of public property are ensured.

Description

technical field [0001] The invention relates to the field of power cables, in particular to a cross-linked polyethylene insulated 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, outgoing lines of power stations, internal power supply of industrial and mining enterprises, and underwater transmission lines across rivers and seas. Due to the strong transmission power of the power cable, the safety of the transmission is particularly important. The cross-sectional size of the inner core of the power cable is larger than that of other cables. The heat generated by friction can cause fire, damage the internal structure of the wire core, and endanger the safety of people and public property. Contents of the invention [0003] In order to avoid and solve the above technical problems, the present invention proposes a cross-linked polyethylene insulated ...

AI Technical Summary

Problems solved by technology

Due to the strong transmission power of the power cable, the safety of the transmission is particularly important. The cross-sectional size of the inner core of the power cable is larger than that of other cables. Friction generates heat, causing fire, damaging the internal structure of the wire core, and endangering personal and public property safety

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