Self-supporting overhead optical cable anti-corona ring

Abstract

The invention discloses a self-supporting overhead optical cable anti-corona ring which comprises a spiral part and a straight part which are fixedly connected, the spiral part is formed by bending a steel wire, the straight part is an iron wire, and a positioning wire is spirally wound on the straight part. When the anti-corona ring is installed, only the spiral part needs to be arranged at the tail end of a pre-twisted wire fitting in a sleeving mode, then the straight part is manually and spirally wound on the pre-twisted wire fitting. Compared with the prior art, the number of times of spirally stirring the anti-corona ring is reduced, the straight part is made of iron wires and is easier to bend, the climbing operation time of workers is effectively shortened, the assembled anti-corona ring can be axially limited through the matching of the positioning wire and the pre-twisted wire fitting, so that the normal working position of the anti-corona ring can be well kept.

Description

technical field [0001] The invention relates to the field of electric power communication equipment, in particular to a self-supporting anti-halo ring for overhead optical cables. Background technique [0002] The anti-corona ring is also called the anti-corona ring, which is mainly used on the ADDS optical cable erected on the same pole as the transmission line, such as figure 2 As shown, the existing anti-corona ring includes two helical parts 8 and 9 with different diameters. The two helical parts 8 and 9 are bent from steel wires. The helical part 8 with a smaller diameter is hooped on the pre-twisted wire fitting 4, the helical part 9 with a larger diameter surrounds the end of the pre-twisted metal fitting 4. Since the cable 5 and the pre-twisted metal fitting 4 are located in a higher electric field space, the end of the pre-twisted metal fitting 4 is vulnerable to corona discharge influence, which poses a threat to the safe operation of the optical cable, and the an...

AI Technical Summary

Problems solved by technology

[0002] The anti-corona ring is also called the anti-corona ring, which is mainly used on the ADDS optical cable erected on the same pole as the transmission line, such as figure 2 As shown, the existing anti-corona ring includes two helical parts 8 and 9 with different diameters. The two helical parts 8 and 9 are bent from steel wires. The helical part 8 with a smaller diameter is hooped on the pre-twisted wire fitting 4, the helical part 9 with a larger diameter surrounds the end of the pre-twisted metal fitting 4. Since the cable 5 and the pre-twisted metal fitting 4 are located in a higher electric field space, the end of the pre-twisted metal fitting 4 is vulnerable to corona discharge influence, which poses a threat to the safe operation of the optical cable, and the anti-halo ring can greatly improve the electric field state at the end of the pre-twisted wire, reduce the electrical corrosion caused by corona to the optical cable, and prolong the service life of the optical cable, but the existing anti-halo ring The installation is relatively troublesome, you need to snap the pre-twisted wire fitting 4 into the gap between the two adjacent coils at the end of the anti-halo ring, and then keep screwing the anti-halo ring on the pre-twisted wire fitting 4 and the cable 5 So that the whole anti-halo ring is put on the pre-twisted wire fitting 4 and the cable 5, because the number of turns of the anti-halo ring is more and the steel wire is harder, it will take a long time for workers to assemble an anti-halo ring, which prolongs In addition, the existing anti-halo ring lacks an axial limit after being assembled, and the anti-halo ring is prone to axial displacement and then leaves the normal working position, which cannot be guaranteed to be always in place. The vicinity of the end of pre-twisted metal fittings 4 plays the role of anti-corona

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