| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a steam turbine in which an outer casing in a double-structured casing composed of the outer casing and an inner casing can be designed regardless of conditions of exhaust steam and production cost can be suppressed, and a steam turbine plant system provided with the steam turbine. <P>SOLUTION: This steam turbine 10 includes the double-structured casing composed of the outer casing 21 and inner casing 20; a turbine rotor 23 disposed in the inner casing and having a plurality of stages of moving blades 22 implanted; a plurality of stages of stationary blades 25 disposed alternately with moving blades 22 in the axial direction of the turbine rotor 23 in the inner casing 20; and a discharge passage 30 guiding steam flown in the inner casing while performing expansion work and passed the final stage moving blades, directly from an inner casing interior to the outside. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
