Patent ID: 9488062
Filing Date: 2016-11-08
CPC Classification: F01D,F05D

Claim Text:
1. A clearance control system for a turbine having a stator assembly and a rotor assembly, the system comprising: a controller for axially moving the stator assembly relative to the rotor assembly and an outer casing of the turbine; a pair of actuators fixedly connected to an inner casing of the turbine that is fixedly connected to the stator assembly; and an actuator shaft adapted to alternately engage a first actuator of the pair of actuators and a second actuator of the pair of actuators such that when the actuator shaft engages the first actuator, the actuator shaft moves the pair of actuators, the inner casing and the stator assembly in a first axial direction relative to the rotor assembly and when the actuator shaft engages the second actuator, the actuator shaft moves the pair of actuators, the inner casing and the stator assembly in a second axial direction relative to the rotor assembly, wherein said controller moves the stator assembly relative to the rotor assembly and the outer casing of the turbine in an axial direction to adjust the clearance between certain portions of the rotor assembly and the stator assembly.