SINGLE-SHAFT GAS-TURBINE UNIT WITH MULTISTAGE TURBINE Russian patent published in 2001 - IPC

FIELD: gas-turbine units. SUBSTANCE: unit has disk carrying non-cooled exhaust blades and intermediate disks. Hub of intermediate disk mounted in front of disk carrying exhaust blades is placed between U-shaped annular member secured on mentioned intermediate disk and supporting flange on splined bushing mounted on rotor shaft. Cooling air admitting holes are made in intermediate disk and in supporting flange. Proposed design provides for effective cooling conditions due to internal sealing of rotor and organizing cooling air flow unidirectionally with gas flow. EFFECT: improved operating reliability of turbine disks. 3 dwg