CN206346561U - A kind of single loop is arranged vertically anchor support - Google Patents

Abstract

A single-circuit vertically arranged strain tower, which includes: a tower body, a tower leg, a jumper cross arm, a wire tension string and a jumper string, and the middle of the tower body is provided with upper, middle and lower wires Tension string hanging point, in which the tension string hanging point of the lower phase conductor is basically the same as the jumper string hanging point, the tension string hanging point of the middle and upper phases is lower than the jumper string hanging point, the three-phase conductors are arranged vertically, and the jumper crossarm Arranged on the inner side of the corner; the center of the phase conductor is the center of the line, and the jumpers are all in the way of jumping around. House demolition is suitable for densely populated areas.

Description

A single-circuit vertically arranged strain tower

technical field

The utility model relates to a single-loop vertically arranged compact tower capable of reducing the width of a corridor to the greatest extent, and belongs to a tower structure of an overhead power transmission line.

Background technique

With the development of the domestic economy, the resources of high-voltage transmission line corridors are becoming more and more scarce. How to arrange transmission lines in a narrower area has become a major problem in the design of power transmission lines.

The tensile tower type of 220kV and above single-circuit towers under construction and put into operation at home and abroad generally adopts dry-shaped towers, as shown in Figure 1, and a small amount of them adopts wine glass type or other types. The dry-shaped strain tower is adopted, the three-phase conductors are arranged in a triangle, the side phase adopts the straight-jump method, and the middle phase adopts the round-jump method. The distance between lines is the distance between the next two phase conductors. In order to minimize the corridor width, especially for 500kV and above lines, in order to reduce the workload of demolition, it is necessary to compress the distance between phase conductors as much as possible.

Contents of the invention

The purpose of the utility model is to overcome the deficiencies of the existing technology, aiming at the current situation that conventional towers cannot be arranged in narrow corridors, and provide a single-loop vertical arrangement of tension towers with reasonable structure and maximum compression of the width of the corridor.

The purpose of this utility model is accomplished through the following technical solutions, a single-circuit vertically arranged strain tower, which includes: a tower body, a tower leg, a jumper cross arm, a wire tension string and a jumper string, the described In the middle of the tower, there are upper, middle and lower wire tension string hanging points, in which the lower phase wire tension string hanging point is basically the same as the jumper string hanging point, and the middle and upper phase tension string hanging points are lower than the jumper wire For the string hanging point, the three-phase wires are arranged vertically, and the jumper crossarm is arranged inside the corner.

As a preference: the center of the phase conductor is the center of the line, the jumpers are all in the way of jumping around, and the end of the jumper crossarm on the inner side of the corner is provided with an aircraft head for easy routing of the jumper.

The utility model has the characteristics of the smallest route corridor, which is suitable for narrow corridors and densely populated areas.

Description of drawings

Figure 1 is a schematic diagram of the structure of the existing single-circuit dry-shaped strain tower.

Fig. 2 is a schematic structural view of the single-circuit vertically arranged tension towers of the present invention.

detailed description

The utility model will be described in detail below in conjunction with the accompanying drawings: As shown in Figure 1, a single-circuit vertical arrangement tension tower described in the utility model includes: a tower body 1, a tower leg 2, a jumper cross arm 3 , wire tension string 4 and jumper string 5, the upper, middle and lower three wire tension string hanging points are arranged in the middle of the tower body 1, wherein the lower phase wire tension string hanging point and the jumper string hanging point It is basically equal, the middle and upper phase tension string hanging points are lower than the jumper string hanging points, the three-phase conductors are arranged vertically, and the jumper crossarms are arranged inside the corner.

Considering the appropriate floor height, the center of the phase conductor is the center of the line, and the jumper wires are all in the way of jumping around. The end of the jumper crossarm inside the corner is provided with an aircraft head that is convenient for the jumper wire routing.

Implementation case:

Taking a 500kV single-circuit vertically arranged strain tower as an example, at a height of 27m, with 4*JL/G1A-500/45 conductors, the weight of the tower is about 1.2 times that of a conventional dry-type strain tower, but the width of the line corridor is reduced by 15m , in housing-intensive areas, the use of the tower has economic advantages.

Claims (2)

1. A single-circuit vertically arranged strain tower, which includes: a tower body, a tower leg, a jumper cross arm, a wire tension string and a jumper string, and is characterized in that upper, middle, The tension string hanging points of the lower three conductors, among which the tension string hanging points of the lower phase conductors are basically the same as the jumper string hanging points, the tension string hanging points of the middle and upper phases are lower than the jumper string hanging points, and the three-phase conductors are arranged vertically , the jumper crossarm is arranged inside the corner. 2. The single-circuit vertically arranged strain tower according to claim 1, characterized in that the center of the phase conductor is the center of the line, the jumpers are all in the way of jumping around, and the end of the jumper crossarm inside the corner is set to facilitate jumping Airplane head for wire routing.