GAS-HYDRAULIC ACCUMULATOR Russian patent published in 2019 - IPC H01H33/34 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering, namely to a gas-hydraulic accumulator, which can be used in a hydraulic drive for high-voltage power switches. Gas-hydraulic accumulator is made in the form of metal power vessel, internal volume of which is divided into gas and hydraulic cavities, at that in the vessel on the side of hydraulic cavity there is neck for connection with hydraulic actuator, and on the side of gas cavity filling wall is mounted into vessel wall. Inside the vessel there is a metal bellows assembly, one end of which is movable and hermetically closed by the metal cover, and the other end is tightly fixed to the vessel wall in the zone of the filling valve location. Metal bellows unit is made in the form of several metal bellows, in which corrugations on external surfaces of recesses are reinforced with rings, to each other bellows are connected by a pipe, wherein centering seat arranged between extreme reinforcing rings comprises support centering seats with balls to support axial travel and to protect bellows and crimp creases from loss of lateral stability. Technical result of the invention is increased reliability of operation of the gas-hydraulic accumulator due to increased stability of bellows unit to excessive deformation.

EFFECT: proposed device can be operated in any climatic conditions for a long period of time.

1 cl, 2 dwg