Resisting-tensile tower for double-circuit lines in height permitted region

Abstract

The invention provides a resisting-tensile tower for double-circuit lines in a height permitted region. The tower comprises a cross arm and two main iron tower columns. Lower ends of the main iron tower column are connected with a foundation. The cross arm is horizontally arranged at tops of the two main iron tower columns. Two ends of the cross arm are located on two sides of the main iron towercolumns. An I circuit and an II circuit are symmetrically arranged on the cross arm. Multiple jumper suspension points are arranged at the bottom of the cross arm. V-shaped jumper strings of the I circuit and the II circuit are symmetrically suspended below the cross arm. Multiple wire suspension points are arranged at the bottom of the cross arm at intervals. Three-phase wires of the I circuit and the II circuit are connected with the wire suspension points. Multiple ground wire suspension points are arranged on the cross arm at intervals. Ground wires of the I circuit and the II circuit areconnected with the ground wire suspension points. Due to the tower shape, the height of a double-circuit pole and tower is effectively reduced so that the height permission requirement can be met to the maximum extent. Meanwhile, an increase in the width of line corridors is avoided. As a result, the engineering construction difficulty is effectively reduced. The resisting-tensile tower generatesobvious social and economic benefits.

Description

technical field [0001] The invention relates to the field of transmission line construction, in particular to a door-type tension tower for a double-circuit line in a height-limited area. Background technique [0002] In recent years, with the continuous advancement of power grid construction, the problem of line corridors has increasingly become a key factor affecting the smooth progress of line projects. In the crowded areas of line corridors and the surrounding areas of the city, power lines are scattered all over the place, and there are often situations where two line paths cross, and even the line paths need to pass through limited and high-demand areas. Taking the intersection of two lines as an example, in previous projects, two methods of crossing or drilling were generally used to solve the problem of crossing lines. The spanning method is generally used in the case where the voltage level of the built line is low, the tower height is low, and the voltage level of...

AI Technical Summary

Problems solved by technology

This method needs to divide the double circuit on the same tower into two single circuit constructions, and the corridor width occupied by the two single circuit lines will be much larger than that of the original double circuit. The drill-through position of the single-circuit line is bound to be more difficult; at the same time, the weight of the wine glass-shaped tension tower designed with the horizontal arrangement of three-phase conductors is relatively high, and the engineering cost is relatively high

These factors have increased the difficulty of engineering construction

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