GAS TURBINE BUCKET WITH SERPENTINE COOLED PLATFORM AND RELATED METHOD

PROBLEM TO BE SOLVED: To provide a cooling circuit for a turbine bucket (10) having a shank (14), a platform (18) and an airfoil (12).SOLUTION: 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 com...

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Bibliographische Detailangaben
1. Verfasser:	SEELY MELISSA ANN
Format:	Patent
Sprache:	eng
Schlagworte:	AIR INTAKES FOR JET-PROPULSION PLANTS BLASTING COMBUSTION ENGINES CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS ENGINE PLANTS IN GENERAL GAS-TURBINE PLANTS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS 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:	PROBLEM TO BE SOLVED: To provide a cooling circuit for a turbine bucket (10) having a shank (14), a platform (18) and an airfoil (12).SOLUTION: 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.