Method and apparatus for shaft sealing and for cooling on the exhaust-gas side of an axial-flow gas turbine

摘要: In a method and an apparatus for shaft sealing cooling on the exhaust-gas side of thermal turbomachine, in particular axial-flow gas turbine, which outlet-side bearing arrangement turbine rotor is made inside casing construction, labyrinth seals gland are used sealing, barrier air having higher pressure than exhaust duct being directed into then duct, extracted from compressor stage fed via pipeline through exhaust-gas-side end rotor, portion cooling-air leakage diverted after some as air. addition, ambient introduced space, uniformly distributed at periphery separately air, partly ducts specifically supporting structure transported to outside passages diffuser.