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

FIELD: hydraulic machinery.

SUBSTANCE: invention relates to screw gyrator hydraulic machines arranged in well and it can be used in motors to rotate rotors by fluid medium delivered by pumps or in pumps to deliver fluid medium owing to rotation of rotors. Stator of screw gyrator hydraulic machine has hollow housing with inner surface made in form of helicoil with internal helical teeth elastomer lining secured in hollow housing and fitting to inner surface of hollow housing. Said lining is made with internal helical teeth and it coincides in form with internal helical teeth of hollow housing. Thickness of elastomer lining, for instance, rubber lining, is maximum in radially pointed outwards spaces between internal helical teeth. Thickness of lining in radially directed outwards tooth spaces between internal helical teeth and thickness of lining on internal helical teeth radially pointed inwards are described by definite equation.

EFFECT: improved reliability and increased service life.

4 cl, 2 dwg