Cold-resistant, corrosion-resistant, flame-retardant and anti-interference double-sheath cable

Abstract

The invention discloses a cold-resistant, corrosion-resistant, flame-retardant and anti-interference double-sheath cable. The cable comprises an outer sheath, an anti-torsion layer, an inner sheath, awater-blocking filler and a cable core; the inner sheath is extruded on the outer side of the cable core, the anti-torsion layer is wrapped on the outer side of the inner sheath, and the outer sheathis extruded on the outer side of the anti-torsion layer; and the cable core comprises three wire cores, a tensile rope and a fixing rope. The inner sheath, the anti-torsion layer and the outer sheathare sequentially wrapped on the outer side of the cable core; double protection can be effectively performed on the cable; the cold resistance, moisture resistance and corrosion resistance of the cable are improved; the wire core can be effectively fixed and dragged through the fixing rope; the cable core is prevented from deforming and breaking due to mutual extrusion in the bending process, thefriction force between the cable core and the sheath can be effectively improved through the circularly wrapped fixing rope, the slippage between the cable core and the inner sheath is avoided, the generated stress is homogenized and eliminated through the ductility of the fixing rope, the cracking and deformation of the cable are avoided, and the service life of the cable is prolonged.

Description

technical field [0001] The invention relates to the field of cables, in particular to a cold-resistant, corrosion-resistant, flame-retardant, and anti-interference double-sheath cable. Background technique [0002] At present, the electric power industry is already the most essential industry in our country. It provides the most basic driving force for the development of our country's industry and other sectors of the national economy, and is also the leading sector of our country's development. The cable is the most important equipment for connecting various important electrical equipment in the cable industry. [0003] A double-sheathed cable is disclosed in the patent application publication number CN 203562229 U, which includes a power core (1) and a ground core (2), and a power core (1) and a ground core (2) Twisted into a cable core (3), the cable core (3) is provided with an inner sheath (4), a reinforcement layer (5), and an outer sheath (6) in sequence, wherein: th...

AI Technical Summary

Problems solved by technology

But it has the following disadvantages: In this application, the power core and the ground core are directly twisted to form a cable, and the cores are staggered, which will cause mutual extrusion between the cores when the cable is squeezed by an external force. There is a phenomenon that the protective layer on the surface of the core is rubbed against each other, which can easily cause the core to be damaged and affect the use of the cable, and the twisted cable core is easy to cause gaps between the cores after the cable is twisted later. It is very easy to cause slippage between the sheath and the cable core, which affects the use of the cable. At the same time, the cable will cause local stress on the cable core due to the external environment during use. The stress cannot be eliminated by homogenization, which can easily cause cracking and deformation of the cable core. , reducing the service life of the cable

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