| 摘要 |
<p>A gas turbine has moving blades which are cooled by steam. A cooling steam circulating flow passage in a turbine rotor (30) having turbine discs (41-47) comprises central, axial holes (73-77) opened to one axial end of the rotor and extending centrally of the turbine rotor, a steam feed and discharge pipe (79) arranged coaxially with the axial holes and defining outside thereof a cooling steam annular passage (81), steam spaces (89a, 89b) defined between facing side surfaces of the turbine discs (41, 43), steam spaces (91a, 91b), respectively, defined on non-facing side surfaces of the turbine discs, axial steam holes (61, 63) formed to extend through the turbine discs and containing therein a compartment pipe (99), and radial steam holes (97, 103a, 103b, 105, 107) extending toward a moving blade mount from the respective steam spaces (91a, 101, 89a).</p> |
