Photoelectricity composite cable with flexible metallic sheath

Abstract

The invention relates to the technical field of composition of optical cables and electric cables, in particular to a photoelectricity composite cable with a flexible metallic sheath. The photoelectricity composite cable with the flexible metallic sheath comprises a central strengthening piece, a plurality of feeder lines and a plurality of optical transmission units distributed around the central strengthening piece, a wrapping tape layer coated on the feeder lines and the optical transmission units, a metallic shield armor layer outside the wrapping tape layer, and an outer sheath coated outside the metallic shield armor layer, wherein each feeder lines is composed of an inner conductor layer and an outer insulation layer. The photoelectricity composite cable with the flexible metallic sheath is characterized in that the each optical transmission unit is composed of a plurality of tight-buffered optical fibers, a strengthening core coated outside the tight-buffered optical fibers, and a sheath layer coated outside the strengthening core. The conductor layers are made of flexible conductors. The metallic shield armor layer is made of a corrugation aluminum tube. The photoelectricity composite cable with the flexible metallic sheath has the advantages of being flexible in structure, easy to construct, and high in tensile strength.

Description

technical field [0001] The invention relates to the technical field of optical cable and cable compounding, in particular to a flexible photoelectric composite cable, which can not only transmit optical signals, but also realize power supply. Background technique [0002] In the prior art, there have been a lot of research and development on composite cables for transmitting electric energy and transmitting optical signals. For example, the name disclosed in CN201020622900.7 is a layer-twisted feeder cable, which includes a central strengthening member located in the center, and a central strengthening member surrounding the central strengthening member. The stranded body formed by twisting and the protective sheath wrapped outside the stranded body; the stranded body includes power lines and optical cables; the stranded body is stranded in an SZ manner around the central strength member; the power line is located in the central strength member outside, and tangent between t...

AI Technical Summary

Problems solved by technology

Although the above-mentioned composite cables can achieve the purpose of transmitting electric energy and transmitting optical signals at the same time, their optical units are all formed by placing optical fibers in loose tubes. In order to protect the performance of optical fibers, they are usually placed in loose tubes. Filling in the water-blocking grease, the filling of the water-blocking grease affects the laying and use of the composite cable. On the one hand, due to the transmission of electricity, the heat emitted by the transmission line makes the water-blocking grease in the loose tube evaporate continuously, thus Affect the optical transmission performance; on the other hand, due to the soft and hard material of the loose tube, it is not convenient for the construction of small bending radius, that is to say, the softness of the product is not good.

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