| 摘要 |
PROBLEM TO BE SOLVED: To effectively suppress erosion of a moving blade and deterioration of efficiency due to water droplet.SOLUTION: A steam turbine includes a moving blade and a stationary blade 60 forming steam flow to the moving blade. In the steam turbine, a plurality of projections 90 are formed in a range from a front edge part 63 of the stationary blade 60 in a back side 61 of the stationary blade 60 to 50% or more and 70% or less of the blade width of the stationary blade 60. The projection 90 has an inclination surface in which a projection amount from the surface of the stationary blade 60 increases toward the downstream side of steam, and a cliff surface that forms an acute angle with respect to the inclination surface. The width of the inclination surface is formed so as to narrow toward the downstream side. |
