Patent ID: 6220014
Filing Date: 2001-04-24
Classification: F01K,Y02E

Abstract:
A single shaft combined cycle plant, comprising:a gas turbine;an exhaust heat recovery boiler for generating steam using exhaust heat discharged from the gas turbine; anda steam turbine driven by steam generated from the exhaust heat recovery boiler,rotors of the gas turbine and rotors of the steam turbine being coupled, and the steam turbine comprising: a high pressure turbine being driven by high pressure steam generated at a superheater of the exhaust heat recovery boiler supplied via a first steam path, and a reheating turbine supplied with and driven by steam that passes through the high pressure turbine, and a second steam path, and is reheated by a reheater of the exhaust heat recovery boiler, with the reheated steam then passing through a third steam path,wherein:separately provided steam supplying means supplies steam to the reheating turbine;a steam connecting path connects the third steam path and the first steam path; anddischarging means discharges steam supplied from the steam supplying means that flows via the reheating turbine and flows through the second steam path to outside of the second steam path.