Outdoor high-voltage isolating switch

Abstract

The invention relates to the technical field of an outdoor AC high-voltage isolation switch, specifically a transmission system of the outdoor high-voltage isolation switch. The system comprises a frame beam, a switch mechanism, a main cutter, an insulation pillar, a connection base, a conductive pipe, a moving contact and a static contact, wherein a drive mechanism is connected with a vertical transmission link, which is connected with a transmission regulation crank of the main cutter arranged in the frame beam; the transmission regulation crank of the main cutter is connected with a first-stage transmission link, which is connected with the transmission regulation crank, which is connected with a main transmission shaft, which is respectively connected with six regulation cranks; two second-stage transmission rods of each phase are connected with the transmission regulation crank; and the two second-stage transmission rods of each phase are connected with the transmission regulation crank below the rotation shaft in a bearing pedestal. The rotation joint of the inventive transmission system is prevented from the direct corrosion of the rain and the snow, and the direct irradiation of the sunlight, thereby improving the anti-rust capacity of the transmission joint, and the six rotation shafts of three phases are applied with uniform force. The inter-phase transmission travel is not influenced by the temperature difference, and the operation is more flexible and reliable.

Description

Technical field: [0001] The invention relates to the technical field of a high-voltage AC isolating switch, specifically, it is a transmission system of an outdoor AC high-voltage isolating switch. Background technique: [0002] The transmission system of the outdoor high-voltage isolating switch used in the current power system is the structural form of the 20th century, and the transmission system is exposed in the space. Due to the decline of air quality, the joints of the transmission system are easy to be eroded. Once the transmission system exposed in the space is eroded, it will seriously affect the operation of the knife switch. The push-pull transmission mode of interphase transmission and connecting pipe is greatly affected by the environment, especially in the northeast region, due to the large temperature difference between winter and summer, the temperature can reach 40 degrees in summer, and the surface temperature can reach -40 degrees in winter. In the 220kV...

AI Technical Summary

Problems solved by technology

A temperature difference of 80 degrees can cause the length of the 4-meter-long connecting pipe to change to more than 10 mm, thus destroying the synchronization of the isolating switch and making the diversion circuit unable to work normally

Both of the above two points will bring hidden dangers to the safe operation of the power system.

In addition, in bad weather, ice floes are easy to freeze on the connecting rods and transmission joints, making switching operations impossible and bringing hidden dangers to the safe operation of the system

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