| 摘要 |
A clearance control system for a turbine (10) having a stator assembly and a rotor assembly includes a hydraulic or pneumatic controller (26,28) that axially drives, through a shaft (34), one or more actuators (36,38) connected to the stator assembly casing (30,32). The controller (26,28) causes relative movement between the stator and rotor assemblies to adjust the clearances between portions of the stator and rotor in accordance with the varying operating conditions of the turbine. More particularly, the controller (26,28) moves the stator relative to the rotor in first and second axial directions to compensate for thermal expansion and contraction during the operating conditions of the turbine (10). |
