| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide gas turbine equipment and a cooling air feeding method, in which compressed air quantity to extract for cooling an exhaust plenum can be reduced, and the energy efficiency can be improved. <P>SOLUTION: The gas turbine equipment is provided with the exhaust plenum 8 having comprising an exhaust casing 10 comprising a casing 10a at an outer peripheral side and a casing 10b at an inner peripheral side, which are connected to the downstream side of a turbine 3, and an exhaust diffuser 11 comprising a diffuser 11a at an outer peripheral side and a diffuser 11b at an inner peripheral side installed between the casing 10a at the outer peripheral side and the casing 10b at the inner peripheral side, a first cooling system 37 to lead cooling air to cool the exhaust plenum 8 from the outer peripheral side further than the diffuser 11a at the outer peripheral side, and a second cooling system 40 to lead cooling air to cool the exhaust plenum 8 from the inner peripheral side nearer and closer than the diffuser 11b at the inner peripheral side. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
