COMPACT TURBOPUMP SET Russian patent published in 2007 - IPC F04D13/04 

FIELD: shipbuilding, rocketry, aircraft, chemical and other industries.

SUBSTANCE: invention relates to hydraulic machine building and it can be used in industries where stringent requirements to reliability, cavitation, and variable characteristics at minimum mass of construction are placed. Proposed turbopump contains sliding bearings lubricated by handled liquid, axial vortex stage with conical bushing of screw and additional channels with restrictors connecting pressure and intake parts. To reduce overall dimensions and increase reliability, hydraulic balancing device and rear bearing are combined. Pulsations are reduced owing to division of liquid and gas-phase leaks and their removal along separate pipelines. Relief holes are made in turbine disk to reduce axial force at non-standard conditions.

EFFECT: improved reliability and stability of turbopump set within wide range of changes of flow rate of handled liquid, improved cavitation characteristics, reduced weight and overall dimensions.

3 cl, 1 dwg