Aluminum alloy flexible cable for power supply to communications facilities

Abstract

The invention discloses an aluminum alloy flexible cable for power supply to communications facilities. The cable comprises three conductive wire cores. Multiple first aluminum alloy circular conductors are twisted on the outer surface of each circular aramid fiber core, the multiple first aluminum alloy circular conductors form an inner conductive layer, and multiple second aluminum alloy circular conductors are twisted on the outer surface of the inner conductive layer. The outer surface of each polyethylene insulating tape is coated with a polyvinyl chloride lining layer. Each circular aramid fiber core is formed by twisting multiple aramid fiber precursors together. A fire-resistant mica tape wraps the outer surfaces of the three conductive wire cores. An adhesive filling part fills the spaces inside of aluminum layers and the gaps among the multiple aramid fiber precursors, and the adhesive filling part is composed of maleic anhydride, butyl acrylate, 2-ethylhexyl acrylate, n-butyl alcohol, dibenzoyl peroxide, triethylene tetramine, graphite particles, aluminum powder, diatomite, and methylbenzene. The transmission capacity is increased, the line loss is reduced, the temperature of the conductors is reduced, the service life of the cable is prolonged, and the electrical conductivity of the cable is improved.

Description

technical field [0001] The invention relates to a communication power cable, in particular to an aluminum alloy flexible cable used for power supply of communication facilities. Background technique [0002] Flexible cables for communication power supply not only require good flexibility to facilitate laying in narrow spaces or similar situations, but also require ideal flame retardancy to meet the requirements for use in occasions with strict fire ratings. Although not limited to the flexible cables for communication power sources listed above, although each has corresponding technical effects, there are the following common shortcomings: First, since they are all made of twisted fine copper wires as conductors, and this conductor is known as Five types of copper conductors, so the degree of softness does not meet the desired requirements. And due to the poor softness, the bending radius is limited, so when laying in a narrow space, obstructed by immovable objects or even ...

AI Technical Summary

Problems solved by technology

Although not limited to the flexible cables for communication power sources listed above, although each has corresponding technical effects, there are the following common shortcomings: First, since they are all made of twisted fine copper wires as conductors, and this conductor is known as Class 5 copper conductors, so the softness does not meet the expected requirements

And due to the poor softness, the bending radius is limited, so when laying in a narrow space, obstructed by immovable objects or even corners, it is easy to affect the construction speed; As the conductor of flexible cables, copper not only has blindness in the rational use of raw materials, but also leads to high manufacturing costs for flexible cables; The labor intensity of medium construction personnel is high, and the labor cost is high

On the other hand, those skilled in the art often think that the filler in the communication power cable only keeps the shape of the cable round, and often ignores that it has a positive impact on the electrical performance of the cable and the external conduction and heat dissipation.

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