STATOR OF SCREW GEROTOR HYDRAULIC MACHINE Russian patent published in 2008 - IPC F04C2/107 F01C1/107 E21B4/02 

FIELD: oil producing industry; well equipment.

SUBSTANCE: invention relates to screw gerotor hydraulic machines placed in wells and it can be used in engine to rotate rotors under action of fluid medium delivered by pumps on or in pumps for delivering fluid medium. Stator of screw gerotor hydraulic machine has hollow housing, tubular shell with inner and outer helical teeth arranged inside hollow housing, elastomer lining placed inside tubular shell and connected to its internal helical teeth, and elastomer screw dampers located in screw channels between eternal helical teeth of tubular shell. Tubular shell with internal and external helical teeth and with lining with screw dampers made of elastomer is installed inside hollow housing to form ring chamber between its external helical teeth, outer surface of screw dampers and inner surface of hollow housing. Ring chamber accommodates damper lining made of elastomer connected to inner surface of hollow housing, screw dampers and external helical teeth of tubular shell.

EFFECT: improved power characteristics of machine.

5 cl, 2 dwg