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

2006-07-18

2006-07-18

Barlow, John (Department: 2863)

Data processing: measuring, calibrating, or testing

Measurement system in a specific environment

Mechanical measurement system

C060S782000, C415S173200

Reexamination Certificate

active

07079957

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

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patent: 5219268 (1993-06-01), Johnson
patent: 5545007 (1996-08-01), Martin
patent: 6626635 (2003-09-01), Prowse et al.

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