High pressure turbine elastic clearance control system and method

A system and method for achieving clearance control for a high-pressure turbine by means of casing mechanical deflection. An active clearance control system is provided to act on a blade (14) that rotates near a shroud (16). The shroud (16) is attached to a case (24) at a shroud supporting location,...

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Bibliographische Detailangaben
Hauptverfasser:	RUIZ, RAFEL, BOYLE, MARCIA, ALBERS, ROBERT J
Format:	Patent
Sprache:	eng ; fre ; ger
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:	A system and method for achieving clearance control for a high-pressure turbine by means of casing mechanical deflection. An active clearance control system is provided to act on a blade (14) that rotates near a shroud (16). The shroud (16) is attached to a case (24) at a shroud supporting location, or shroud hanger (22). A clearance (18) is required between a tip of the blade (14) and the shroud (16). The blade (14) tip and shroud (16) are surrounded with an elastic case (24). This case (24) can deflect radially in response not only to thermal expansion, but also to a difference in pressures acting on the inner and outer diameters of the case (24).