Method and system for active tip clearance control in turbines

Details Method and system for active tip clearance control in turbines Method and system for active tip clearance control in turbines

F - Mech Eng,Light,Heat,Weapons

01

D

F01D 11/22 (2006.01)

Patent

CA 2490628

A system for controlling blade tip clearance in a turbine. The system includes a stator including a shroud having a plurality of shroud segments (38) and a rotor (12) including a blade (14) rotatable within the shroud. An actuator assembly (30) is positioned radially around the shroud and includes a plurality of actuators (18). A sensor (16) senses a turbine parameter and generates a sensor signal representative of the turbine parameter. A modeling module (22) generates a tip clearance prediction in response to turbine cycle parameters. A controller (20) receives the sensor signal and the tip clearance prediction and generates at least one command signal. The actuators (18) include at least one actuator receiving the command signal and adjusts a position of at least one of the shroud segments (38) in response to the command signal.

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