Branching tower for four-loop overhead transmission line

Abstract

The invention discloses a branching tower for a four-loop overhead transmission line. A ground wire cross arm set, an upper-layer double-loop wire cross arm set and a lower-layer double-loop wire cross arm set are sequentially arranged on a tower body of the branching tower from top to bottom, the upper-layer double-loop wire cross arm set is provided with three pairs of upper-layer wire cross arms spaced up and down and symmetric about the tower body, the lower-layer double-loop wire cross arm set is provided with three pairs of lower-layer wire cross arms spaced up and down and symmetric about the tower body, and the upper-layer wire cross arms and the lower-layer wire cross arms are staggered around the vertical midline of the tower body clockwise or anticlockwise by 30-60 degrees. Compared with the prior art, mounting structures of T joint branching cross arms are reduced, thus, while the problem of independent branching of two upper-layer loops and two lower-layer loops of the branching tower for the four-loop overhead transmission line is solved, the structure of the same-tower four-loop branching tower is greatly simplified, the tower height and the tower weight of the four-loop branching tower are effectively reduced, and meanwhile the laying cost of the same-tower four-loop overhead line is reduced.

Description

technical field [0001] The invention relates to an iron tower of a high-voltage overhead transmission line, in particular to a branch tower for a four-circuit overhead transmission line. Background technique [0002] In recent years, my country's power grid has developed rapidly, and the scale of the power grid has ranked first in the world. With the increasingly prominent contradictions between power grid construction and local economy, the land resources of power corridors are becoming increasingly tight. Therefore, the use of the same-tower four-circuit power transmission technology has high economic and social benefits for reducing the land occupation and house demolition of overhead power transmission corridors. . [0003] Chinese Utility Model Patent Publication Document CN203729648U discloses a 66 kV same-tower four-circuit double-T junction branch tower. There are three-phase upper layer double-circuit phase line crossarm and three-phase lower layer double-circuit ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a branch tower for four-circuit overhead transmission lines with simple structure and convenient construction, so as to solve the problems existing in the existing four-circuit double-T connection branch tower on the same tower

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