BELLOWS HYDRAULIC ACCUMULATOR Russian patent published in 2019 - IPC F15B1/10 

FIELD: machine building.

SUBSTANCE: invention relates to machine building, particularly, to gas-hydraulic accumulators, and can be used for accumulation of energy in hydraulic-pneumatic systems and damping of working medium vibrations. Hydraulic accumulator includes housing (1), containing in opposite ends filling valve (2) and mounting branch pipe (3). In housing (1), there is bellows (7) with gas medium, one end of which is tightly fixed in end part of housing in area with built-in filling valve (2), and movable end is tightly closed by metal cover (8). In cavity of bellows (7), there are elastomer elements (9). In end part of housing (1) equipped with filling valve (2), in zone of tightly fixed end of bellows there are holes, in which on threaded connection covers (10) are installed. Elastomeric elements (9) can be assembled in elastic-unloading modules (11) uniformly located in circumferential direction around bellows axis. Module comprises vertical metal tube (12) filled with elastomer elements (9), one end of the tube is coaxially connected to cover 10, and the other end of tube (12) is closed by bushing (13) installed on it by means of a threaded connection with finger pusher (14) installed in it, installed in bellows cover (8) with possibility of interaction with elastomer elements (9) placed in the tube.

EFFECT: technical result consists in improvement of operating reliability of bellows and increase in range of working pressures of bellows hydraulic accumulator.

9 cl, 4 dwg