HYDRAULIC SYSTEM OF DRIVE IN DEVICE FOR MEDIUM PRESSURE TRANSFER FROM ONE SYSTEM TO ANOTHER WITHOUT CONTACT OF MEDIUMS Russian patent published in 2009 - IPC F15B3/00 

FIELD: machine building.

SUBSTANCE: system is intended for pumping of fluid mediums with widely varied physical-mechanical properties. System comprises two identical working hydraulic cylinders, stems of which are connected to corresponding stems of two identical drive hydraulic cylinders, piston cavities of which are communicated by hydraulic lines with creation of closed system of working fluid circulation with reverse controlled pump with system of reversal and control of pump displacement communicated to stem, and make-up pump with system for make-up of closed system of working fluid circulation, at that it is equipped by valves for alignment of driven hydraulic cylinder pistons, and valves are installed in their pistons. System of pump displacement includes three-way hydraulic distributor, which is kinematically connected to stem of hydraulic cylinder connected by its inlet to discharge line of make-up pump, and taps of which are connected to hydraulic cylinder of movement of hydraulic pump displacement control, in stem of which fork is fixed for limitation of pump displacement, and which is installed with the possibility of motion along lever, throttling slide valve of control, taps of which are connected to hydraulic cylinders of inclined washer inclination angle, and washer is connected via feedback link with control slide valve and lever of pump displacement control.

EFFECT: increased reliability.

1 dwg