TURBO MACHINE LABYRINTH SEAL

摘要

FIELD: machine building.SUBSTANCE: labyrinth seal comprises cellular flange mounted at the stator and labyrinth with damping ring in circular groove at rim edge. Rim edge is directed to turbine disc. Axial position of said cellular flange can be adjusted by adjusting ring arranged between said flange and said stator. Disc deflector hub is arranged between labyrinth and disc to make slotted cavity between hub side surface and circular radial rib nearby said disc to constrict circular groove. Ratio between damping ring diameter, in cross-section, and slotted cavity height makes 6?12.EFFECT: higher reliability.2 dwg