Angel wing abradable seal and sealing method

An abradable seal (40) is provided to improve turbine performance by physically reducing the clearance between a flange portion (28, 30, 32) of the nozzle (34, 36) and an opposed angel wing/seal plate member (14. 16, 18) of the bucket (10). The provision of an abradable seal also mitigates angel win...

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Bibliographische Detailangaben
Hauptverfasser:	MCGOVERN, TARA EASTER, FANG, BIAO, WOLFE, CHRISTOPHER E, CHENG, YINGUO
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:	An abradable seal (40) is provided to improve turbine performance by physically reducing the clearance between a flange portion (28, 30, 32) of the nozzle (34, 36) and an opposed angel wing/seal plate member (14. 16, 18) of the bucket (10). The provision of an abradable seal also mitigates angel wing/seal plate tooth or fin (22,24,26) wear by providing for abradable contact without metal to metal hard rub.