Novel single-stage isolating switch

Abstract

The invention discloses a novel single-stage isolating switch, which relates to the field of power equipment, and comprises a bottom plate, an insulating support column A and an insulating support column B vertically fixed at two ends of the bottom plate, a wiring board A and a wiring board B respectively and fixedly connected to the top ends of the insulating support column A and the insulating support column B, a contact A and a contact B respectively and fixedly connected to the wiring board A and the wiring board B, a pin shaft connected to the top end of the contact B, and a disconnectinglink rotationally connected with the pin shaft and in contact connection with the contact A. The pin shaft is sleeved with a torsion spring, and the two ends of the torsion spring are fixedly connected with the contact B and the disconnecting link respectively; a lower locking pipe is arranged at the end, close to the wiring board B, of the wiring board A, an upper locking pipe is fixed to the position, corresponding to the lower locking pipe, of the lower surface of the disconnecting link, the lower locking pipe is sleeved with the upper locking pipe to form a pressing rotary locking structure, a handle is arranged on the upper surface of the disconnecting link, and operation is easy, stable and reliable.

Description

technical field [0001] The invention relates to power system application equipment, in particular to a novel single-stage isolating switch. Background technique [0002] The isolation switch is a switching device mainly used for isolating power supply, switching operation, connecting and cutting off small current circuits, and has no arc extinguishing function. When the isolating switch is in the off position, there is an insulation distance between the contacts that meets the specified requirements and an obvious disconnection mark; when it is in the close position, it is a switchgear that can carry the current under normal circuit conditions and the current under abnormal conditions within a specified time . It is generally used as a high-voltage disconnector, that is, a disconnector with a rated voltage above 1kV. Its working principle and structure are relatively simple, but due to the large amount of use and high requirements for working reliability, it is very importa...

AI Technical Summary

Problems solved by technology

During the overhaul and defect handling of the isolating switch, the faults of the isolating switch generally include: corrosion of components, heating of connections, oxidation of the main body, shedding of mechanisms, etc. Safe and stable operation of power lines

In order to avoid the loss caused by line tripping due to the failure of the isolating switch to the user, research and improve the device components in the parts where the isolating switch is prone to failure, select high-quality materials, carry out reasonable and compliant design, process and manufacture a new type of single Level isolating switch to ensure that no line tripping accidents occur due to isolating switch

[0004] For example, the invention with application number 201520690267.8 discloses a new type of GW9 isolating switch. The hook structure is formed by hook plate, clamp plate, torsion spring and limit plate structure to realize the hook lock function. The structure is exposed to the outside air and is easily weathered. Corrosion, which affects structural stability and is prone to failure

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