500kV line tension-resistant iron tower with 180-degree rotation angle

Abstract

The invention discloses a 500kV line tension-resistant iron tower with a 180-degree rotation angle. The 500kV line tension-resistant iron tower is provided with a tower body, and an upper-layer wire cross arm and a lower-layer wire cross arm which are symmetric left and right are arranged on the tower body in parallel up and down. A first upper-layer wire hanging point and a third upper-layer wire hanging point are correspondingly arranged at the left end point and the right end point of the upper-layer wire cross arm, the horizontal heights of the first upper-layer wire hanging point and the third upper-layer wire hanging point are the same, and a second upper-layer wire hanging point is arranged in the middle position where the connected straight line of the first upper-layer wire hanging point and the third upper-layer wire hanging point intersects with the tower body. A first lower-layer wire hanging point and a third upper-layer wire hanging point are correspondingly arranged at the left end point and the right end point of the lower-layer wire cross arm, the first lower-layer wire hanging point and the third lower-layer wire hanging point are the same in horizontal height, and a second lower-layer wire hanging point is arranged in the middle of the intersection of the tower body and the straight line where the first lower-layer wire hanging point and the third lower-layer wire hanging point are connected. The erecting mode that the direct rotation angle of a line is larger than 90 degrees is achieved, the length of an erecting path is shortened, occupied land resources are reduced, and the influence on environment ecology can be effectively reduced in environment sensitive zones.

Description

technical field [0001] The invention relates to the field of power transmission lines, in particular to a 500kV line tension type iron tower with a rotation angle of 180°. Background technique [0002] At present, the design range of the rotation angle of the tension tower of a general transmission line is only between 0° and 90°. If a larger angle of turn is required, it can only be achieved by using a multi-base iron tower. specific example figure 1 As shown in the figure, the outlet interval of the substation is O, and the terminal tower is located at point A, but the direction of the line drop point needs to be in the direction of D→E. Generally, in order to ensure that the number of rotation angles of each corner tower is between 0° and 90° In between, the transmission tower line erection angle method similar to O→A→B→C→D→E is usually adopted. However, in the actual transmission line erection, due to the special circumstances of erection topography, environmental prot...

AI Technical Summary

Problems solved by technology

However, in the actual erection of transmission lines, due to special circumstances such as erection topography, environmental protection, and land planning, it is very difficult or even impossible to erect corner towers according to the orientation of corner lines.

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