A GAS TURBINE ENGINE ACTIVE CLEARANCE CONTROL SYSTEM AND METHOD

A GAS TURBINE ENGINE ACTIVE CLEARANCE CONTROL SYSTEM AND METHOD

Clearance control schemes for controlling a clearance (CL) defined between a first component (190a) and a second component (166a) of a gas turbine engine (100) are provided. In one aspect, an engine controller (210) of the gas turbine engine (100) implements a clearance control scheme, which include...

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Bibliographische Detailangaben
Hauptverfasser: MATHEWS, JR., Harry Kirk, WESTERVELT, Eric Richard
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:Clearance control schemes for controlling a clearance (CL) defined between a first component (190a) and a second component (166a) of a gas turbine engine (100) are provided. In one aspect, an engine controller (210) of the gas turbine engine (100) implements a clearance control scheme, which includes receiving data (240) indicating a clearance (CL) between the first component (190a) and the second component (166a), the clearance (CL) being at least one of a measured clearance (CLM) captured by a sensor (232a) and a predicted clearance (CLP) specific to the gas turbine engine (100) at that point in time; comparing the clearance (CL) to an allowable clearance (CLA); determining a clearance setpoint (CS) for a clearance adjustment system (101) based on a clearance difference (CLΔ) determined by comparing the clearance (CL) to the allowable clearance (CLA); and causing the clearance adjustment system (101) to adjust the clearance (CL) to the allowable clearance (CLA) based on the clearance setpoint (CS).