SUBMERSIBLE MULTI-PHASE PUMP STAGE (VARIANTS) Russian patent published in 2017 - IPC F04D13/10 F04D29/22 F04D29/02 F04D31/00 

FIELD: machine engineering.

SUBSTANCE: stage of the submersible multi-phase pump comprises a guide device with the upper and lower discs, between which the blades are arranged, forming channels, a working wheel with main blades located on the upper surface of impeller disc, an anti-friction washer on the disc lower side and a bushing coupled to the shaft through a key. Wheel disc is connected to the bushing with additional blades or disc with through holes.

EFFECT: enhancing the abrasion resistance of the stage, increasing heat resistance of the impeller and guide apparatus, reduced tendency of stage structure to deposition of mechanical impurities between the impeller disc and the upper disc of the guide apparatus, reduced labour input of the stage repair process, simplified design of the working wheel in the section between the bushing and the disc, improved efficiency of dissolving gas process in the formation liquid, improved conditions of the gas-liquid mixture flow through the main blades of the working wheel.

23 cl, 22 dwg