EP 1335111 A2 20030813 - Coolant recovery type gas turbine
Title (en)
Coolant recovery type gas turbine
Title (de)
Gasturbine mit Kühlflüssigkeiten-Rückgewinnungssystem
Title (fr)
Turbine à gaz avec système de récupération du réfrigérant
Publication
Application
Priority
- EP 03004315 A 19961129
- EP 96940152 A 19961129
Abstract (en)
A gas turbine includes a rotor shaft comprising a plurality of discs (8, 9, 10, 11, 12a). Each disc (8, 9, 10, 11, 12a) has a plurality of moving blades (4, 5, 6, 7, 7a) driven by combustion gas and arranged annularly on the peripheral portion. Spacers (11a, 13, 14, 15) are arranged between the discs (8, 9, 10, 11, 12a), the respective discs (8, 9, 10, 11, 12a) and the spacers (11a, 13, 14, 15) being arranged in the axial direction. The moving blades (4, 5, 6, 7, 7a) are provided with flow paths (8a, 9a) for introducing coolant for cooling and discharging the coolant heated by the combustion gas. Contact surfaces (16a, 31, 32, 33, 34, 35, 36) contacting both the discs (8, 9, 10, 11, 12a) in rotor peripheral side regions and adjacent spacers (11a, 13, 14, 15) are formed therebetween. A supply flow path (8a) passes through the discs (8, 9, 10, 11, 12a) and the spacers (11a, 13, 14, 15) in the regions forming the contact surfaces (16a, 31, 32, 33, 34, 35, 36) and supply the coolant for cooling the moving blades (4, 5, 6, 7, 7a). A recovery flow path (9a) recovers the coolant which is heated by the moving blades (4, 5, 6, 7, 7a). <IMAGE>
IPC 1-7
IPC 8 full level
F01D 5/08 (2006.01)
CPC (source: EP)
F01D 5/084 (2013.01); F05D 2260/205 (2013.01)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 1335111 A2 20030813; EP 1335111 A3 20031105; EP 1335111 B1 20050413
DOCDB simple family (application)
EP 03004315 A 19961129