Composite insulator suspension double-series-connection tower device

Abstract

The invention relates to a composite insulator suspension double-series-connection tower device, and belongs to the technical field of composite insulator suspension double-series-connection tower devices. The tower device comprises a tower connection center string, a tower connection hardware fitting short backup string and a tower connection hardware fitting long backup string, which are installed between an iron tower wire tower connection device and an LFS yoke plate. The tower connection center string is positioned in the middle of the tower wire tower connection device. The tower connection fitting short backup string and the tower connection fitting long backup string are symmetrically arranged on the left side and the right side of the tower connection center string. The tower connection hardware fitting short backup string is longer than the tower connection central string. The tower connection hardware fitting long backup string is longer than the tower connection hardware fitting short backup string. Two connection insulator strings are installed under the LFS link plate, L-shaped triangular yoke plates are installed under the two connection insulator strings. Two pairs of wire suspension clamps are installed under the L-shaped triangular yoke plates. The two pairs of wire suspension clamps are connected with two wires. According to the invention, double-connection and single-hanging of double suspension strings can be achieved, string falling is avoided, safety and reliability are achieved, and the requirement for disconnection working condition loads stipulated in eighteen major anti-accident measures of a power grid is met.

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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