Composite cable with good flame retardant effect

Abstract

The invention discloses a composite cable with a good flame-retardant effect, which comprises a plurality of uniformly distributed cable core bodies, conductor cores arranged at the centers of the cable core bodies, conductor shielding layers arranged at the peripheries of the conductor cores, insulating layers arranged at the peripheries of the conductor shielding layers, insulating shielding layers arranged at the peripheries of the insulating layers, and metal shielding layers arranged at the peripheries of the insulating shielding layers, the composite cable with the good flame-retardant effect further comprises a core fixing structure which is arranged outside the cable core bodies and used for positioning the cable core bodies, and the core fixing structure comprises core fixing clamping petals movably arranged on the outer surfaces of the cable core bodies in a sleeving mode. According to the composite cable with the good flame-retardant effect, wire bodies in the cable can be uniformly dispersed, the mutual influence among the wire bodies is effectively reduced, meanwhile, some elastic structures are adopted, the impact resistance of the cable is greatly improved, an inner-outer-layer flame-retardant structure is adopted, and the flame-retardant effect is good. Spontaneous combustion of the cable and external fire combustion are effectively avoided, and use safety is guaranteed.

Description

technical field [0001] The invention relates to the technical field of cable application, in particular to a composite cable with good flame-retardant effect. Background technique [0002] Power cable is a cable product used to transmit and distribute high-power electric energy in the main line of the power system. It is often used in urban underground power grids, power station lead lines, internal power supply of industrial and mining enterprises, and underwater transmission lines across rivers and seas. The basic structure of power cables It consists of four parts: core, insulation layer, shielding layer and protective layer. 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 backbone lines of power systems. , including 1-500KV and above various voltage levels, various insulated power cables. The fire resistance of the existing cables is insufficient, which of...

AI Technical Summary

Problems solved by technology

The fire resistance of the existing cables is insufficient, which often leads to cable burning accidents, which will cause great economic losses in the power industry. At the same time, the cables are buried in the ground, and it is inevitable that the outside of the cables will be subjected to the extrusion stress of the land. It is also not enough, it is easy to cause the cable to be squeezed and damaged, which will affect the normal use of the cable

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