PUMP FOR PUMPING GAS-LIQUID MIXTURE Russian patent published in 2019 - IPC F04D13/10 F04D31/00 

FIELD: oil industry.

SUBSTANCE: invention relates to oil industry, particularly, to oil production equipment with high concentration of gas, and can be used for surface pumping or well production of gas-liquid mixture. Pump comprises a housing accommodating a pressure unit of axial stages, a dispersing unit of stator-sleeves and rotors having ledges and recesses on coupling surfaces, package of centrifugal type transient stages and packages with centrifugal pump main stages consisting of guiding devices and impellers fitted on shaft and rotating together with it. Between the pressure unit and the dispersing unit there is a stack with diagonal stages containing guide vanes and impellers with dispersing holes on the blade edges. In the transition stages flow channels are formed, the width of which exceeds the width of the flow channels of the main pump stages.

EFFECT: invention is aimed at efficient operation of the pump and development of high head in a wide range of concentrations of undissolved gas in the mixture.

1 cl, 1 dwg