ENERGY ACCUMULATION SYSTEM COMPRISING EXPANDABLE ACCUMULATOR UNIT AND TANK Russian patent published in 2015 - IPC F15B1/26 B65D90/00 F17C1/00 

FIELD: electricity.

SUBSTANCE: expandable accumulator and tank unit comprising a tank pre-setting an internal chamber with the working fluid medium inside, and an expandable accumulator. The expandable accumulator comprises the inner layer pre-setting the internal space which contains the working fluid medium, and the external layer, at least partially surrounding the inner layer. The inner layer is characterized by a failure strain, higher than that of the external layer. The accumulator is at least partially located in the tank and at least partially is immersed into the working fluid medium contained in the internal chamber.

EFFECT: accumulator is designed with a possibility of exchange of the working fluid medium with the tank.

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