公开(公告)号：US20190010821A1

公开(公告)日：2019-01-10

申请号：US16001561

申请日：2018-06-06

Applicant: General Electric Company

Inventor： Debabrata MUKHOPADHYAY ,  James ADAICKALASAMY ,  Muralikrishna RANGHARAJHAN

IPC: F01D11/20 ,  F02C9/50

Abstract: This disclosure provides systems and methods for controlling gas turbine airfoil clearance using virtual clearance measurement. The disclosure includes a gas turbine system having a stage of airfoils and a casing adjacent the stage of airfoils that define a clearance distance between them. A clearance control mechanism controllably adjusts the clearance distance based upon a clearance control signal. The clearance control signal to the clearance control mechanism is based on a virtual clearance function that generates a clearance value from at least one system measurement of the gas turbine system.