| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a turbine rotor of a steam turbine, the rotor capable of achieving reduction in thermal stress generating in a welded portion and near the welded portion joining structural members of the turbine rotor, and to provide a steam turbine including the turbine rotor. <P>SOLUTION: The turbine rotor 10 is structured by joining a high-temperature side turbine rotor structural member 20 and a low-temperature side turbine rotor structural member 30 in an axial direction of the turbine rotor. The turbine rotor structural members 20 and 30 include, respectively, rotor drums 21 and 31, wheels 22 and 32, which are disposed in a circumference direction so as to radially and outwardly protrude from the rotor drums 21 and 31 and on which moving blades 70 are planted, joining ends composed of the wheels 22 and 32, and recesses 24 and 34 formed in a center side of the joining faces 23 and 33 of the joining ends. The joining faces 23 and 33 are welded together to integrate the high-temperature side turbine rotor structural member 20 and the low-temperature side turbine rotor structural member 30. <P>COPYRIGHT: (C)2012,JPO&INPIT |
