Easily-identifiable communication optical cable for power grid use

Abstract

The invention relates to the technical field of cables, especially to an easily-identifiable communication optical cable for power grid use. The optical cable comprises a cable core, an outer sheath wrapping the cable core, a reinforcing element made of a single steel wire or glass fiber reinforced plastics, a supporting wire protective layer wrapping the reinforcing element, and ribs connecting the supporting wire protective layer and the outer sheath, wherein the cable core consists of a central reinforcing member in the center, at least one filler rope or a plurality of loosen sleeves outside the central reinforcing member and a protective layer wrapping up the filler rope and the loosen sleeves, and the loosen sleeves have at least one optical fiber. In the cable core, the filler rope and the loosen sleeves are twisted about the central reinforcing member in a spiral twisting or clockwise-counterclockwise twisting, and identification strips are made of special materials. The optical cable is advantageous in that the thickness of the supporting wire protective layer is easy to control, the supporting wire protective layer is smoother and round, the production speed is faster, the qualified rate is higher, the deadweight of the optical cable is lighter, the color-locking optical cable is applicable to longer span, and the colors of the identification strips are more stable.

Description

[0001] This application is a divisional application for an invention patent named: self-supporting optical cable with identification strip, application date: January 26, 2014, and application number: 201410036276.5. technical field [0002] The invention relates to the technical field of cables, in particular to an easily identifiable communication optical cable for power grids. Background technique [0003] Most of the self-supporting optical cables are used for overhead laying. Due to their excellent load-bearing performance, the cables can be laid without additional steel strands for support. Usually, the cables are fixed on the clamps at the towers. That is, it can be placed freely between adjacent towers. However, with the rapid development of the communication industry, the number of cables between poles and towers increases sharply, which brings great trouble to maintenance because it is not easy to distinguish. For this reason, a large amount of researches have been...

AI Technical Summary

Problems solved by technology

The above-mentioned document does disclose the marking strip for optical cable identification, but it has the following common defects: (1) using stranded steel wire as the reinforcement part of the suspension wire to realize self-support, although it has achieved the function of greater bearing capacity, but , the sheath outside the stranded steel wire is extremely rough, and the performance of the sheath of the optical cable is extremely unsatisfactory; to achieve smoothness, the thickness of the sheath must be greatly increased, which increases the weight and cost of the optical cable and shortens the span of the optical cable.

(2) According to the defect of (1) above, it is difficult to control the thickness of the marking strip on the suspension wire sheath, so the quality of the product is extremely unstable and the production speed is quite slow

In addition, the color of the identification strips in the prior art is generally unstable. In Southeast Asia, after one year of overhead cable laying, the identification strips have faded to varying degrees, which affects the accurate use of the identification.

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