SUPER DISPERSION IMPELLER OF CENTRIFUGAL PUMP STAGE WITH SUBMERSIBLE MOTOR FOR OIL PRODUCTION Russian patent published in 2009 - IPC F04D29/22 F04D13/10 F04D31/00 

FIELD: motors and pumps.

SUBSTANCE: impeller is implemented as closed element with driving and driven discs. There are blades between discs. Additional impeller blades are mounted full-circle on the upper surface of the driving disc. The circular disc is mounted above driving disc which is provided with radial extensions on its upper surface. The extensions form open dispersing channels along the wheel periphery. Closed dispersing channels are formed between circular disc and driving disc of impeller. The extensions of circular disc are placed along impeller radius crossing the centre of their edge or being inclined to the above radius. The said extensions are directed either to the side of impeller rotation or counter wise. The additional blades are placed at an angle to the said impeller radius and orientated in the same or opposite directions as the extensions on the circular disc.

EFFECT: improved dispersing capability of impeller while operating with high gas content in formation water avoiding complication of impeller manufacture technology.

9 cl, 5 dwg