RADIAL GUIDE VANE Russian patent published in 2012 - IPC F04D29/44 

FIELD: engines and pumps.

SUBSTANCE: radial guide vane included in multi-stage pump is designed for well oil production and for water supply to productive oil-bearing formation to maintain and increase the formation pressure in it. Guide vane consists of lower disc having impeller cavity, upper disc and vanes arranged between those discs and forming return channels. On upper side of lower disc there are spiral grooves shaped as to thickness, in which projections shaped as to height and made on lower side of upper disc are arranged. Transition channels are shaped between upper surfaces of projections and spiral inclined surface of the bottom of grooves. Around the cavity in lower disc there formed are spiral branch pieces, which are adjacent to spiral grooves along the place of end faces with formation of a through rectangular hole. Besides, lower edge of projection shaped as to height is combined with upper edge of rectangular hole.

EFFECT: invention provides the possibility of manufacturing radial guide vanes using high-capacity casting methods.

6 dwg