PRESSURE EXCHANGER Russian patent published in 1999 - IPC

FIELD: transmission of energy from flow to flow of liquid. SUBSTANCE: rotor 10 has central lubricant supply main 22 and stepped bearing surfaces at reduced clearance in way to each end. Lubricant flows to main 11 available at each end and to low-pressure side via axial clearance. During motion of rotor, pressure in main increases at one end and reduces at other end, thus giving rise to axial centering force at surface of clearance. Stages of radial bearing surfaces 23 create centering force similar since radial motion cause rose of pressure gradient at reduced clearance and reduction of pressure gradient at increased clearance. Passages of rotor are provided with curvilinear separating walls 24. End parts 1 and 21 have passage 14 connected with high-pressure hole 15; it acts on limited part of plate 13 and balances deformation. EFFECT: reduced mechanical and hydraulic losses; enhanced reliability. 6 cl, 8 dwg