| 摘要 |
<p>A gas and steam turbine system comprises a gas turbine, a steam turbine (7), a superheater (4), an exhaust boiler (5) and a steam drum (6). The gas turbine comprises an air compressor (1), a combustion chamber (2) and a turbine (3) that are in fluid connection in turn. The outer walls of the combustion chamber (2) are provided with water-cooled walls (21). The water-cooled walls (21) have cooling water that flows in a circulation to cool the combustion chamber (2). The superheater (4) and the exhaust boiler (5) are installed on a flue exhausting pipeline of the turbine (3) in turn. The superheater (4) is in fluid connection with the steam drum (6) and receives saturation steam from the steam drum (6). The superheater (4) is in fluid connection with the steam turbine (7) and provides superheated steam to the steam turbine (7). The exhaust boiler (5) is in fluid connection with the steam drum (6) to form a flow loop. Since the outer walls of the combustion chamber (2) are provided with water-cooled walls (21) in which cooling water flows in circulation to cool the combustion chamber (2), the combustion chamber (2) is better cooled by the cooling water in the water-cooled walls (21), which can reduce the quantity of air discharged from the air compressor (1) into the combustion chamber (2) and therefore can reduce the energy cost.</p> |
