Cooling circuit for a turbine rotor blade and corresponding cooling method

Cooling circuit for a turbine rotor blade and corresponding cooling method

A cooling circuit for a turbine bucket (10) having a shank (14), a platform (18) and an airfoil (12). The cooling circuit includes a first cooling passage (38) extending from an inlet (20) located at a radially inward end of the shank (14) and adapted to communicate with a turbine wheel-space, the f...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: SEELY, MELISSA ANN
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
BLASTING
ENGINE PLANTS IN GENERAL
HEATING
LIGHTING
MACHINES OR ENGINES IN GENERAL
MECHANICAL ENGINEERING
NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES
STEAM ENGINES
WEAPONS
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Beschreibung
Zusammenfassung:A cooling circuit for a turbine bucket (10) having a shank (14), a platform (18) and an airfoil (12). The cooling circuit includes a first cooling passage (38) extending from an inlet (20) located at a radially inward end of the shank (14) and adapted to communicate with a turbine wheel-space, the first cooling passage (38), in use, supplying cooling air to a serpentine cooling circuit (24) extending within and across at least one region of the platform (18). The serpentine cooling circuit (24) connects with a separate internal cooling circuit in the airfoil (12), such that the cooling air used to cool the platform (18) is re-used in the airfoil cooling circuit.