GAS TURBINE POWER GENERATION EQUIPMENT, AND DEVICE AND METHOD FOR DRYING GAS TURBINE COOLING AIR SYSTEM.

摘要

Rusting of the inner surfaces of pipes is to be suppressed in a cooling air system of a gas turbine. Specifically, this system has: a gas turbine (200) provided with a turbine (203) connected to a power generator (100), a combustor (202) for supplying combustion gas to the turbine (203), and a compressor (201) for supplying compressed air to the combustor (202); a cooling air system (300) for supplying compressed air bled from the compressor (201) to the turbine (203), the cooling air system (300) being connected at one end side to an intermediate stage or an outlet of the compressor (201) and connected at the other end side to the turbine (203); and a drying air system (400) for supplying drying air into the cooling air system (300) when the gas turbine (200) is stopped, the drying air system (400) being connected to the cooling air system (300).