A composite insulator suspended double series tower device

Abstract

The invention relates to a composite insulator suspension double series connection tower device, which belongs to the technical field of composite insulator suspension double series connection tower device. Including tower connection center string, tower connection short backup string, tower connection long backup string installed between the iron tower wire tower connection device and the LFS connection plate, the tower connection center string is located in the middle of the iron tower wire tower connection device, and tower connection fittings The short backup string and the long backup string of connected tower fittings are symmetrically arranged on the left and right sides of the connected tower center string. , There are two insulator strings installed under the LFS connecting plate, L-shaped triangular connecting plates are installed under the two insulator strings, and two pairs of wire suspension clamps are installed under the L-shaped delta connecting plate. The wires are connected. The invention can realize double-connection single-hanging of double-hanging strings, avoid string dropping, be safe and reliable, and meet load requirements of disconnected working conditions stipulated in eighteen major anti-accident measures of power grids.

Description

technical field [0001] The invention relates to a composite insulator suspension double series connection tower device, which belongs to the technical field of composite insulator suspension double series connection tower device. Background technique [0002] On November 9, 2018, the State Grid Corporation of China issued 18 major anti-accident measures for power grids (State Grid Equipment [2018] No. 979, Revised Edition), Article 6.3.1.3 stipulates that the suspension composite of 500kV (330kV) and 750kV lines The insulator strings shall adopt double-connection (including single-V string) and above design, and the single-connection shall meet the load requirements of disconnection condition; Article 6.3.1.4 stipulates: Overhead transmission lines spanning 110kV (including 66kV) and above transmission lines, For railways and graded roads, navigable rivers and residential areas, etc., the wire suspension strings should adopt a double-connected structure, and double hanging p...

AI Technical Summary

Problems solved by technology

[0006] 1. Wire suspension single string single fixed mode (see attached figure 1 ), there is no problem with the length difference between the two links, but the single fixed mode is not safe, and strings may drop;

[0007] 2. Wire suspension double string single fixed mode (see attached figure 2 ), there is a problem of the length difference between the two joints. By changing the direction of the joint plate to eliminate the difference in the length of the two joints, there is no need to increase the length of the single joint, but the single fixed mode is not safe, and strings may be dropped;

[0008] 3. Wire suspension double string double fixed mode (see attached image 3 ), there is a problem of the difference in length between the two joints, and it is necessary to add fittings to the single joint on the downhill side to increase the length of the single joint to eliminate the problem of the length difference between the two joints, but the structural height of the general fittings cannot be different from the difference in the length of the two joints one-to-one correspondence

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