| 摘要 |
<p>A steam turbine has: a stationary section, a turbine rotor, nozzle diaphragms, and a nozzle box. The stationary section includes a casing. The turbine rotor includes rotor blade stages arranged in an axial direction. Each of the rotor blade stages is provided with turbine rotor blades arranged in a circumferential direction, and rotatably arranged in the casing. Each of the nozzle diaphragms has turbine nozzles arranged in the circumferential direction and forms a pair with each of the rotor blade stages, held by the stationary section so as to be arranged substantially coaxially with the turbine rotor. The nozzle box is held by the stationary section and arranged at most upstream part of the rotor blade stages substantially coaxially with the turbine rotor so as to allow steam to flow toward the turbine rotor blades and holds at least two stages of the nozzle diaphragms.</p> |
