GAS TURBINE FACILITY

摘要

Provided is a gas turbine facility in which active clearance control for achieving a minimum tip clearance during load operation can be performed while keeping ensuring a tip clearance of single-stage moving blade of a turbine required at the time of starting. The gas turbine facility is equipped with a cooler in an air system used for cooling a two-stage stationary blade of a turbine, in which a single-stage split ring and a two-stage split ring respectively facing the tip ends of the single-stage moving blade and the two-stage moving blade are supported by the same blade ring member, and a cooling air channel in which air for cooling the two-stage moving blade is flown while cooling the blade ring is formed, whereby thermal expansion of the blade ring can be controlled and the clearance between the blade ring and the tip end of the blade can be controlled.