Overhaul method of folding arm isolating switch

Abstract

The invention provides a folding arm disconnecting switch maintenance method, which is implemented by using a special tooling platform designed in a matching manner. The folding arm disconnecting switch maintenance method comprises the following steps such as: (1) placing the special tooling platform to a set station and performing horizontal calibration; (2) fixing the disconnecting switch on thespecial tooling platform; (3) dismounting an upper conductive arm; (4) dismounting an intermediate joint; (5) dismounting a lower conductive arm; (6) disassembling the upper conductive arm; (7) dismounting a clamping spring; (8) disassembling a moving contact assembly; (9) reassembling after maintenance and treatment; and (10) debugging. The folding arm disconnecting switch maintenance method provided by the invention is implemented by using the special tooling platform designed in a matching manner; compared with the common methods in the prior art, the folding arm disconnecting switch maintenance method can greatly reduce the number of personnel required for on-site maintenance, save manpower, greatly improve maintenance efficiency, and shorten maintenance time; therefore, the time of maintenance and power failure is greatly reduced, which has good economic and social benefits; and the folding arm disconnecting switch maintenance method can effectively protect the relevant components of the disconnecting switch, therefore, the quality of maintenance is improved.

Description

technical field [0001] The invention relates to a method for overhauling a folding arm type isolating switch by a power supply department. Background technique [0002] 110kV, 220kV folding arm type disconnectors (such as SPV, SPO, GW16, GW17, GW22, GW23 and other types of folding arm type disconnectors) have compact structure, small footprint, large current carrying capacity, and good sealing of moving parts , high safety and reliability, and many other characteristics, it is an ideal equipment for the layout of incoming and outgoing lines of substations, and has been widely used in power grids. During the long-term use of the folding arm isolating switch, it is greatly affected by the outdoor environment. The upper and lower conductive arms of the folding arm isolating switch are prone to rust and jamming. Components such as covers and fasteners are easily seized due to corrosion, which makes the folding arm type isolating switch malfunction and needs to be overhauled. T...

AI Technical Summary

Problems solved by technology

The traditional method of on-site maintenance of the folding arm isolating switch is that the maintenance personnel rely on relatively simple tools and tools, and use methods such as hammering, wrench screwing, screwdriver prying, etc. The fixing of the folding arm isolating switch requires the cooperation of multiple people during maintenance, The disassembly and assembly of the moving contact and the clamping spring is more difficult, time-consuming and labor-intensive, and it is easy to damage the relevant components of the folding arm type disconnector

Images