Energy-saving flexible fireproof multi-core cable

Abstract

The invention discloses an energy-saving flexible fireproof multi-core cable which comprises a cable core. The cable core is formed by twisting a plurality of fan-shaped insulating cable cores,and the fan-shaped insulating cable cores are composed of fan-shaped conductors and insulating layers wrapped outside the fan-shaped conductors. Composite bronze mica tapes are wrapped outside the cable core, a corrugated copper sheath is longitudinally wrapped outside the composite bronze mica tapes, and a low-smoke zero-halogen polyolefin outer sheath for preventing oxidative deterioration caused by long-term contact of the corrugated copper sheath and air and serving as an oxygen barrier layer concurrently is arranged outside the corrugated copper sheath in an extruding mode. The round conductors of the energy-saving flexible fireproof multi-core cable are changed to be fan-shaped, so that the surface area is increased, the surface effect of current transmission is strengthened, and the cable can have large current-carrying capacity. When the cable is formed, complicated material filling operation is omitted, the production efficiency is improved, the overall outer diameter of the cable is reduced by 5%-7%, accordingly materials required by layers are decreased on the premise that structures of the layers are invariable, and resources are saved.

Description

[0001] technical field [0002] The invention relates to the field of wires and cables, in particular to an energy-saving flexible fireproof multi-core cable. Background technique [0003] As fireproof cables play an extremely important role in modern urban buildings, such as high-rise civil buildings, office buildings, hotels, shopping malls, exhibition centers, museums, libraries, hospitals, gymnasiums, airports and other densely populated places, they have been widely used. [0004] However, the existing fireproof cables are often wrapped with mica tape, phlogopite or muscovite to form an insulated core outside the circular stranded conductor, and then the insulated core is stranded to form a cable core. , so there are gaps in the cable core after the insulated cores are twisted, and filling is placed in the gap of the cable core, which not only increases the cost, but also has a large outer diameter; The amount of patterned copper sheath is also huge. The important is...

AI Technical Summary

Problems solved by technology

[0004] However, the existing fireproof cables are often wrapped with mica tape, phlogopite or muscovite to form an insulated core outside the circular stranded conductor, and then the insulated core is stranded to form a cable core. , so there are gaps in the cable core after the insulated cores are twisted, and filling is placed in the gap of the cable core, which not only increases the cost, but also has a large outer diameter; The amount of patterned copper sheath is also very large

The important issue of saving energy and reducing consumption is often ignored in the production process

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