GIS device and three-phase common box bus bar cylinder

Abstract

The invention provides a GIS device and a three-phase common box bus bar cylinder. The three-phase common box bus bar cylinder comprises a cylinder body, three single-phase attachment mounting holes are axially arranged in the cylinder body at intervals, single-phase attachment mounting flanges are arranged at the single-phase attachment mounting holes, and the flange is a neckless plate flange welded to the edge of a single-phase accessory mounting hole. Single-phase attachment mounting flanges are neckless plate flanges that have a reduced height compared to flanges with necks in the prior art, and under a condition that an axial distance between adjacent two single-phase attachment mounting flanges is unchanged, it is more conducive to extending to the junction of the single-phase attachment mounting flange and the bus bar body for the welding gun. The advantages are further demonstrated in miniaturized GIS devices where the cylinder body length is small and the length cannot be prolonged. The three-phase common box bus bar cylinder can be formed by welding and processing the cylinder body and the single-phase attachment mounting flanges. The casting method is not used, the cost is reduced, and the welding quality is more easily controlled.

Description

technical field [0001] The invention relates to a GIS device and a three-phase common-box bus bar cylinder body thereof. Background technique [0002] GIS equipment is the abbreviation of gas-insulated metal-enclosed switchgear. The components composed of the busbar structure and the isolating switch and circuit breaker connected to the busbar structure in the GIS equipment are called intervals. The busbar structure includes a three-phase common box busbar cylinder. For miniaturized GIS equipment, such as 252kV miniaturized GIS equipment, the length of the interval (or three-phase common tank busbar cylinder) is less than 1.6 meters, and its structure is particularly compact. The structure of the three-phase common tank busbar cylinder is as follows figure 1 and figure 2 As shown, the cylinder body of the three-phase common box busbar includes a cylinder body, and three single-phase accessory installation holes (not shown in the figure) are arranged at intervals along the ...

AI Technical Summary

Problems solved by technology

However, since the cylinder body is a large thin-walled casting cylinder (length greater than 1500mm, cylinder diameter about 700mm, wall thickness about 10mm), the scrap rate is high, especially the current domestic casting technology is relatively backward, and the quality of the cylinder is difficult. Control, insufficient production capacity, and high cost have become the production bottleneck of GIS manufacturers' production capacity and cost control

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