A three-support insulator fixing structure and gil

Abstract

The invention relates to a three-support insulator fixing structure and a GIL. The fixed structure of the three-support insulator includes: a sealing cylinder, the end of which has a butt flange for sealing and docking with the adjacent sealing cylinder; an avoidance groove, which is arranged on the inner edge of the butt flange and communicates with the inner cavity of the sealing cylinder; three supports The insulator is located at the position close to the butt joint flange in the sealing cylinder; the connecting plate section extends in the axial direction of the sealing cylinder; the transfer structure is fixedly connected with the inner wall of the avoidance groove; the inner end of the connecting plate section is connected to the three supporting insulators The support is fixedly connected, and the outer end is fixedly connected with the transfer structure. The three-support insulator fixing structure of the present invention can conveniently fix and connect the three-support insulator and the sealing cylinder through the connecting plate section and the transition structure, and when two adjacent sections of the sealing cylinder are butted, the escape through the escape groove will not Interference is caused to the docking, and the fixed installation of the three-support insulator at the docking position of the two-segment sealing cylinder is realized simply and conveniently.

Description

technical field [0001] The invention relates to the field of metal-enclosed gas-insulated transmission lines, in particular to a three-support insulator fixing structure and a GIL. Background technique [0002] At present, most of my country's energy bases are far away from load centers. How to scientifically solve the problem of large-capacity remote power transmission channels is one of the major issues facing power development. Due to the increasing scarcity of land resources, coupled with the huge pressure from ecological environment protection and the space constraints of special geographical areas, traditional power transmission channels dominated by overhead transmission lines are facing severe challenges. The electrical characteristics of GIL are similar to those of overhead transmission lines. It occupies a small space in the transmission corridor and does not generate harmful electromagnetic environment to the outside. At the same time, its operation is not affecte...

AI Technical Summary

Problems solved by technology

[0003] In the current GIL, the butt joint position of the two-section sealed cylinder is generally referred to the basin insulator in GIS, but the basin insulator is costly and heavy on the one hand; The basin-type insulator completely seals the joint position of the two sections of the sealed cylinder, and the dust particles in the vertical layout section are easily deposited in the concave space of the basin-type insulator, which will greatly improve the insulation performance at this position. big impact

Based on such problems, the idea of ​​arranging three-support insulators at the docking position of the two-segment sealing cylinders was proposed, but there is no suitable way to fix the three-supporting insulators at the docking positions of the two-segment sealing cylinders in the prior art fixed installation method

Images