GAS TURBINE FOR COMBINED CYCLE POWER PLANT

摘要

In a gas turbine for a combined cycle power plant wherein steam for cooling is generated in an exhaust heat recovery boiler to which exhaust gas of a gas turbine is supplied, and stationary blades are cooled by the steam for cooling, a cooling steam system is provided by connecting a cooling steam supply pipe from an exhaust heat recovery boiler to a cooling path formed in the first stage stationary blade, connecting a cooling steam recovery pipe connecting the steam turbine to the cooling path formed in the second stage stationary blade, providing a connecting pipe for cooling steam which has a relatively large cross-sectional area connecting the cooling paths in the first and second stage stationary blades.