TURBOPUMP UNIT Russian patent published in 2014 - IPC F04D13/04 F04D29/58 

FIELD: engines and pumps.

SUBSTANCE: invention relates to turbomachinery, particularly to high-rpm high-pressure rotary pumps to be used in turbopump units of liquid-propellant rocket engines. Turbopump unit consists of the turbine and pump working wheels of which are fitted on common shaft running in bearings, and seals separating the cavity of one of bearings from pump and turbine. Said cavity is connected with working wheel outlet cavity via shaped channels, their inlet is arranged at acute angle to working fluid peripheral speed.

EFFECT: reliable operation in liquid-propellant rocket engine, higher efficiency.

7 cl, 2 dwg