COOLED GAS TURBINE Russian patent published in 1998 - IPC

FIELD: power engineering industry. SUBSTANCE: cooled gas turbine has rotor with blades and auxiliary disk connected with rotor disk forming inner cavity. Auxiliary disk is provided with movable seal bounding the near-disk cavity. Connected with rotor are tubes whose outlet sections are located in inner cavity in near-disk cavity between seals. Additional movable seal which may be provided with labyrinth lugs on rotor and mating smooth sections on stator is also mounted in near-disk cavity. EFFECT: enhanced efficiency due to reduction of power losses and flow rate of cooling air. 3 cl, 2 dwg