| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a turbine casing capable of suppressing the concentration of a stress in a junction such as a weld zone.SOLUTION: A turbine casing of the embodiment comprises a compartment body and a wrapper rib. In the compartment body, vapor flows to the inside from an upper part via a steam inlet part, and the stream to the side along the axis of rotation of a turbine rotor housed in the inside. A wrapper rib extends in a direction along the axis of rotation in the outer peripheral surface of the compartment body, and is formed with a notch containing an R-shaped part.</p> |
