Energy accumulator with air leakage alarm apparatus and hydraulic operating mechanism

Abstract

The invention relates to an energy accumulator with an air leakage alarm apparatus and a hydraulic operating mechanism. The energy accumulator with the air leakage alarm apparatus comprises an energy accumulator cylinder and a piston arranged in the energy accumulator cylinder, a pre-inflated cavity is formed in the energy accumulator cylinder through division by the piston, and a piston displacement detection device used for detecting the displacement of the piston is arranged at the end, close to the pre-inflated cavity, of the energy accumulator. As the pressure in the pre-inflated cavity will be reduced after air in the pre-inflated cavity is leaked, the piston can correspondingly move, the position of the piston can be detected through the piston displacement detection device accordingly, and air leakage conditions are accordingly leant in time; in addition, an alarm position can be set, if it is detected that the piston moves to the set alarm position, it is indicated that the air of the pre-inflated cavity is leaked, and overhauling is needed; compared with the prior art, a breaker does not need to be stopped for air pressure detection, and normal work of the breaker is not influenced.

Description

technical field [0001] The invention relates to an accumulator with a gas leakage alarm device and a hydraulic operating mechanism. Background technique [0002] Most of the accumulators in the hydraulic operating mechanism of high-voltage circuit breakers are gas-filled accumulators. The existing accumulators generally include an accumulator cylinder and a piston that guides and moves in the accumulator cylinder. The barrel is divided into left and right chambers, which are high-pressure oil chamber and pre-inflated chamber respectively. When storing energy in the accumulator, fill the pre-charged chamber with gas, then feed high-pressure hydraulic oil into the high-pressure oil chamber, drive the piston in the accumulator to move to the right, and compress the pre-charged gas in the pre-charged chamber. Gas is used to store energy; when the circuit breaker is in normal operation, the rated oil pressure of the hydraulic system is the oil pressure of the high-pressure oil c...

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Problems solved by technology

[0004] The object of the present invention is to provide an accumulator with a gas leakage alarm device to solve the problems in the prior art that there is a lag in the discovery of gas leakage and that it will affect the work of the circuit breaker; at the same time, the present invention also provides a A hydraulic operating mechanism using the accumulator

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