Large-power hydraulic operating mechanism

Abstract

The invention discloses a large-power hydraulic operating mechanism which is used for super-high voltage and ultrahigh voltage sulfur hexafluoride circuit breakers. The large-power hydraulic operating mechanism comprises an energy storage cylinder, a butterfly group module, a work cylinder module, a control valve module and an oil pump tank module, wherein the work cylinder module is coaxially sheathed and fixed in the energy storage cylinder and an energy storage cylinder of the butterfly group module, and the oil pump tank module, the control valve module and the work cylinder module are sequentially and coaxially connected in series into a whole; an oil tank of the oil pump tank module is communicated with a cylinder of the work cylinder module through a high voltage oil circuit, a low voltage oil circuit and a signal oil circuit; a mechanical lock is arranged on the stroke of a piston rod, and the mechanical lock is matched with a connector at the top end of the piston rod through the top end of a crank to realize locking or delocking; and a connecting rod and a rack which are linked are fixed on energy storage flanges of the energy storage cylinder and the butterfly group module, and the other end of the connecting rod is connected with a safety valve outer crank in the control valve module. The hydraulic operating mechanism is changed from a parallel integrated mode into a series integrated mode with firm mechanical connection and good seal effect.

Description

technical field [0001] The invention belongs to the field of high-voltage power transmission and transformation equipment, and relates to a spring-energy-storage hydraulic operating mechanism for a high-voltage circuit breaker, which is used for ultra-high voltage and ultra-high voltage sulfur hexafluoride circuit breakers. Background technique [0002] The high-power hydraulic operating mechanism is an electric opening and closing drive device for high-voltage circuit breakers. Historically, the main structures of this type of products at home and abroad are all combined and integrated, that is, the working cylinder is the central module, and the Energy storage cylinders, control valves, oil pumps, safety valves and other modules are mounted horizontally on the working cylinder. Many seals and fasteners are used, the mechanical connection is not well stressed, and the high-pressure connection is easy to loosen and leak oil, so that the entire The reliability of the organiza...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a high-power hydraulic operating mechanism to solve the problem of improving the traditional high-power hydraulic operating mechanism from a side-by-side integrated type to a series-mounted integrated type with strong mechanical connection and better sealing effect and meeting ultra-high pressure. , UHV SF6 circuit breaker technical requirements and other technical issues

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