Improved waterproof coaxial overhead cable

Abstract

The invention discloses an improved waterproof coaxial overhead cable comprising an inner conductor, a water blocking layer, an outer conductor, an insulating layer and an outer sheath. The inner conductor is formed by twisting of a reinforced core arranged at the center and a plurality of single aluminium alloy wires encircling the reinforced core by using the reinforced core as the center. The outer conductor is formed by combination of two pairs of bearing cores that are symmetric by using the cable as the center and a plurality of copper wires. Besides, a flexible water absorption tube is arranged between the insulating layer and the outer sheath. A humidity sensing alarming device is also arranged on the outer sheath, wherein the height of the humidity sensing alarming device is not larger than 1mm and the width is not larger than 2mm. A plurality of sponges are installed in the flexible water absorption tube; a drainage tube is arranged and passes through the inner layer of the outer sheath to be flush with the outer layer of the outer sheath; and a cover cap is arranged at the outlet of the drainage tube. According to the invention, the cable has advantages of excellent reinforced, self-bearing, and waterproof performances, good moisture-resistant and sealing properties, low attenuation, and good shielding effect and a humidity monitoring effect is also realized.

Description

technical field [0001] The invention relates to the field of electric wires and cables, in particular to an improved waterproof coaxial overhead cable. Background technique [0002] Coaxial overhead cables are an important variety in information transmission, mainly used as antenna feeders for radio transmitting or receiving equipment, and internal or interconnected cables for various communications and electronic equipment. Coaxial aerial cables are composed of inner conductor layer, insulation layer, outer conductor layer and sheath layer. The inner conductor layer and outer conductor layer are usually small in cross-section and have poor self-supporting performance, especially when the cable is not buried in the ground. At the same time, due to poor load-bearing performance, the weight of the cable itself will cause the cable conductor to break, and it is also easy to damage the small cable conductor during construction. [0003] With the development of society, people p...

AI Technical Summary

Problems solved by technology

Coaxial aerial cables are composed of inner conductor layer, insulation layer, outer conductor layer and sheath layer. The inner conductor layer and outer conductor layer are usually small in cross-section and have poor self-supporting performance, especially when the cable is not buried in the ground. At the same time, due to poor load-bearing performance, the weight of the cable itself will cause the cable conductor to break, and it is also easy to damage the small cable conductor during construction.

[0003] With the development of society, people pay more and more attention to waterproof overhead cables. At present, according to the existing installation conditions of ordinary overhead cables, the connection ends are not tight and the conductors are easy to enter water and are not easy to volatilize. The single wire break in the wire will easily cause the accelerated oxidation of the aluminum conductor, which will affect the product life and power quality.

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