Turbine bucket platform cooling circuit and method

Turbine bucket platform cooling circuit and method

In a turbine bucket having an airfoil portion (212) and a root portion with a platform (216) at an interface between the airfoil portion and the root portion, a platform cooling arrangement including: a cooling passage (224,226) defined in the platform (216) to extend along at least a portion of a c...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: MACARIAN, CHRISTOPHER ARDA, VELTRE, LOUIS
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:In a turbine bucket having an airfoil portion (212) and a root portion with a platform (216) at an interface between the airfoil portion and the root portion, a platform cooling arrangement including: a cooling passage (224,226) defined in the platform (216) to extend along at least a portion of a concave, pressure side (228) of the airfoil portion (212), at least one cooling medium inlet to said cooling passage extending from an airfoil cooling medium cavity (230,244) in a vicinity of an axial center of the airfoil portion, and at least one outlet opening (242,248) for expelling cooling medium from said cooling passage.