PORTABLE SUBMERSIBLE DEWATERING TURBOPUMP UNIT Russian patent published in 1998 - IPC

FIELD: turbopump units used for emergency removal of water and other liquids from flooded basements, tunnels, wells, etc. SUBSTANCE: turbopump unit includes housing made in form of body of revolution with pump impeller and turbine wheel mounted in it on common shaft with their back sides directed towards each other. Housing is provided with filter fitted at pump impeller inlet and flexible supply and discharge hoses; hose supplying pressure working medium to turbine wheel is located inside flexible hose discharging liquid being handled and working liquid from pump impeller and turbine wheel. Unit is provided with spacer having passage for supply of working medium to turbine wheel and sickle-shaped discharge passage. One end of spacer is connected with housing combining the passages supplying the working medium to turbine wheel and communicating the sickle-shaped discharge passage with passages discharging the media from turbine wheel and pump impeller. Other end of spacer is connected with discharge hose, the supply hose being connected to supply passage of spacer. Check valve is fitted at outlet of passage discharging the medium from pump impeller. EFFECT: enhanced reliability. 3 cl, 6 dwg