TWO-STROKE PNEUMOHYDRAULIC PULSE PUMP Russian patent published in 2005 - IPC

FIELD: hydraulic machinery.

SUBSTANCE: proposed pulse pump contains pair of pneumohydraulic boosters, each provided with pulse generator and connected into closed hydraulic system with pair of pneumohydraulic accumulators. Pneumatic spaces of pneumohydraulic booster are antiparallel connected with outputs of pneumatic pulse generators. Output hydraulic line of high-pressure space of first hydraulic booster is connected through return hydraulic valve to hydraulic line of second pneumohydraulic accumulator. Hydraulic line of first pneumohydraulic accumulator is co0nnected through hydraulic valve in opposition to hydraulic high-pressure line of second pneumohydraulic booster. Tank hydraulic line is connected in parallel to high-pressure hydraulic lines of both pneumohydraulic accumulators. Outputs of high-pressure hydraulic line of both pneumohydraulic booster are connected in parallel to inputs of OR hydraulic valve with output into high-pressure hydraulic line of closed hydraulic system.

EFFECT: possibility of smoothing out high pressure peaks, provision of uniform operation of hydraulic drives.

1 dwg