Tensile anti-rat and anti-termite water-blocking low voltage cable

Abstract

The invention discloses a tensile anti-rat and anti-termite water-blocking low voltage cable, which comprises a cable core, wherein the cable core is formed by twisting three insulated wire cores; cable core filling for filling a gap of the cable core is arranged in the cable core; the cable core is sequentially coated with a shielding layer, an insulating layer and an outer sheath layer from inside to outside; a bonding layer is also arranged between the insulating layer and the outer sheath layer; a plurality of uniformly arranged grooves are formed in the contact surface of the insulating layer and the bonding layer; convex blocks matched with the grooves are arranged on the bonding layer and are clamped into the grooves; the outer surface of the outer sheath layer is firstly plated with a water-blocking film and then coated with an anti-rat and anti-termite coating layer; and a plastic reinforcing rib for connecting and fixing the three insulated wire cores is arranged among the three insulated wire cores. The tensile anti-rat and anti-termite water-blocking low voltage cable has the characteristics of tensile property, shielding property and rat and termite bite resistance.

Description

technical field [0001] The invention relates to the field of cables, in particular to a tensile-resistant rodent-proof and water-blocking low-voltage cable. Background technique [0002] The existing low-voltage cables are used more and more widely, and are used in some places that need to be pulled frequently. Due to the low connection strength between the insulating layer and other structures of the cable, the insulating layer will be damaged when the cable is pulled for a long time. It is very easy to loosen or even fall off, so that the overall structural strength of the cable is greatly reduced, seriously affecting the normal use of the cable, and the use effect of the cable is also greatly reduced. Moreover, the wire cores in the cable are easily deformed due to external extrusion, and the position in the cable changes, which affects the shielding between the wire cores. [0003] The traditional low-voltage cable production technology has the following problems: 1. Th...

AI Technical Summary

Problems solved by technology

[0002] The existing low-voltage cables are used more and more widely, and are used in some places that need to be pulled frequently. Due to the low connection strength between the insulating layer and other structures of the cable, the insulating layer will be damaged when the cable is pulled for a long time. It is very easy to loosen or even fall off, which greatly reduces the overall structural strength of the cable, seriously affects the normal use of the cable, and greatly reduces the use effect of the cable

Moreover, the wire cores in the cable are easily deformed due to external extrusion, and the position in the cable changes, which affects the shielding between the wire cores.

[0003] The traditional low-voltage cable production technology has the following problems: 1. The poor performance of the material itself leads to poor insulation and mechanical properties; 2. Poor insulation and sheath elasticity, large compression deformation, and low strength; 3. Anti-rat, anti-termite, anti-insect erosion Poor performance; 4. Poor water resistance. Water is the primary factor affecting the safety performance of cables. Once water vapor enters the interior of the cable, the insulating XLPE of the cable will easily produce water trees, and the service life of the cable will be greatly reduced.

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