IMPELLER SHROUD WITH PNEUMATIC PISTON FOR CLEARANCE CONTROL IN A CENTRIFUGAL COMPRESSOR

A system for controlling the clearance distance between an impeller blade tip (213) of a centrifugal compressor (210) and a radially inner surface of an impeller shroud (220) in a turbine engine. The system comprises a high pressure air source (262), an air piston (264) mounted between an engine cas...

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Bibliographische Detailangaben
Hauptverfasser:	Acker, Jonathan, Ottow, Nathan, Crutchfield, Jeffrey, Nesteroff, Michael
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING HEATING LIGHTING MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT PUMPS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS WEAPONS
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Beschreibung
Zusammenfassung:	A system for controlling the clearance distance between an impeller blade tip (213) of a centrifugal compressor (210) and a radially inner surface of an impeller shroud (220) in a turbine engine. The system comprises a high pressure air source (262), an air piston (264) mounted between an engine casing (231) and the shroud and adapted to receive high pressure air from the high pressure air source, a mounting arm (277, 278) coupling the shroud and air piston, and a slidable coupling (266) adapted to allow axial movement of the shroud and joining the shroud to an axial member.