BLADE TURN REGULATOR OF PRE-CHAMBER SWIRLER Russian patent published in 2001 - IPC

FIELD: combustion chambers of high-temperature gas-turbine engines. SUBSTANCE: proposed regulator has cylindrical housing with circular cavity where circular piston is located. Circular piston is spring-loaded on side of one of butt ends. Circular cavity is brought into communication with fuel passage of injector at other butt end. Swirler is divided radially into outer and inner swirlers. Rigidly secured to piston is cylindrical bush provided with longitudinal cuts according to number of blades of inner swirler. On one side of cuts, gear racks are provided which are thrown into engagement with splines of guides of swivel roots of inner swirler. Guides of blade roots of outer swirler are thrown into engagement with gear racks made in cuts of cylindrical bush rigidly secured with bellows. Pressure of air is supplied inside bellows before compressor and on the outside it is acted on by pressure of air after compressor. EFFECT: extended range of control of bladed swirler; enhanced efficiency. 3 dwg