Device for cooling a gas turbine coolant and installing a gas turbine and steam turbine with such a device

摘要

"DEVICE FOR COOLING AGENT FOR A GAS TURBINE AND INSTALLATION OF GAS TURBINE AND STEAM TURBINE WITH A TYPE OF THIS TYPE". The present invention relates to a device (100) for cooling a gas turbine coolant (2), of relatively simple construction and of low complexity in installation technique, which should enable particularly high efficiency. in taking advantage of the heat produced when cooling the gas turbine cooling agent (2). For this purpose, according to the invention, in a coolant channel (102) connected with the gas turbine (2) there is arranged a series of evaporator tubes (140, 150, 160, 170) which are connected together to the formation of a forced-flow steam generator with respect to a fluid medium. Such a device (100) is preferably employed in a gas and steam turbine installation (1, 1, 1 ") with an excess heat steam generator (30) connected after a gas turbine (2) by the exhaust gas side, which generator whose heating surfaces are connected to the water-steam circuit (24) of a steam turbine (20), in which case the evaporator tubes (140) of the The device (100) is connected at the inlet side through a supply line (112) with the supply water line of the steam-water circuit (24) of the steam turbine (20).