Cat-head type tower for one-way overhead line cable T joint

Abstract

The invention discloses a cat-head type tower for a one-way overhead line cable T joint. The cat-head type tower comprises a tower body, ground wire cross arms, middle-phase wire cross arms, side-phase wire cross arms, upper-layer cable auxiliary cross arms and lower-layer cable auxiliary cross arms; the two layers of ground wire cross arms are located on the uppermost portion of the tower body, arranged to be perpendicular to the line direction and used for hanging ground wires; the middle-phase wire cross arms are located under the ground wire cross arms, V-shaped suspension strings are fixed to the inner upper portions of the middle-phase wire cross arms and used for hanging middle-phase wires, and double-I-type downward cable leading terminals are arranged under wire hanging points arranged in the middle-phase wire cross arms. The cat-head type tower for the one-way overhead line cable T joint has the advantages that the cable T joint is achieved by adopting one base tower, the building cost is low, small area is occupied, little influences on stress of adjacent poles and towers are generated, an original line arrangement mode is not changed, adjacent tower transformation is generally not needed, and the cat-head type tower is suitable for building adjacent linear towers and tension-resistant towers.

Description

technical field [0001] The invention relates to the technical field of high-voltage transmission lines, in particular to a cat head tower suitable for T-connection of single-circuit overhead line cables. Background technique [0002] At present, existing solutions in the prior art usually adopt a base double-circuit cable terminal tower, which is usually arranged in a drum shape, and a layer of auxiliary cross-arm is added below the lower conductor cross-arm. In the single-circuit overhead line cable T connection project, use the three-layer conductor cross arm on one side of the double-circuit terminal tower to suspend the conductor, use the conductor cross arm and auxiliary cross arm to suspend the cable terminal, and lead the conductor through the jumper To the hanging string of the cable terminal, the lightning arrester and the connection of the cable head, so as to realize the T connection of the overhead line cable. [0003] The double-circuit tension pole tower is us...

AI Technical Summary

Problems solved by technology

[0003] The double-circuit tension pole tower is used to realize the T connection, the construction cost is high, and the tower base occupies a large area. The vertical arrangement of the wire suspension points at the T connection is different from the conventional triangular or upper-shaped arrangement, resulting in adjacent straight-line towers. The suspension string of wires deviates from the vertical state. When the electrical clearance does not meet the requirements, the adjacent tower needs to be rebuilt, which greatly increases the construction cost and floor area.

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