| 摘要 |
<P>PROBLEM TO BE SOLVED: To surely restrain self-excited vibration generated in a stator blade, in the stator blade of a steam turbine and the steam turbine. <P>SOLUTION: This stator blade includes blade members 17 and 18 within which a space 14 is formed, and a leaf spring member 19 arranged in the space 14 of the blade members 17 and 18 and elastically contacting with inner surfaces 21 and 22 of the blade members 17 and 18. The leaf spring member 19 is constituted of a positioning portion 27, an elastic contact portion 28, and a coupling portion 29. The elastic contact portion 28 is divided into a plurality in the longitudinal direction of the blade members 17 and 18. As a result of this, in the stator blade, the elastic contact portion 28 elastically contacts the inner surfaces 21 and 22 of the blade members 17 and 18 across substantially the entire surfaces without partial contact. Thus, the elastically contacting area between the elastic contact portion 28 and the inner surfaces 21 and 22 of the blade members 17 and 18 is expanded, and the self-excited vibration generated in the stator blade can be surely restrained. <P>COPYRIGHT: (C)2012,JPO&INPIT |
