Mitsubishi Heavy Industries Limited

Mitsubishi Power, Ltd.

Shohei Danno

Yoshinori Tanaka

Soichiro Tabata

Takashi Maruyama

Yasuhiro Sasao

Hideyuki Toda

Yu Shibata

Keiichiro Miyajima

A steam turbine blade includes a blade body () including blade surfaces () extending in a blade height direction. The blade body () includes a first suction port () extending in the blade height direction and opening in the blade surface (), a first drain flow path () internally extending in the blade height direction, and first communication passages () internally provided away from one another in the blade height direction and independently of one another and making the first drain port () and the first drain flow path () in communication with each other.

Steam turbine blade, steam turbine, and method for manufacturing steam turbine blade

A steam turbine rotor blade includes a protrusion portion () which is provided on a tip end portion of a blade body (), on which a leading edge portion () is formed, in a blade height direction and protrudes from a suction-side surface () toward the leading edge portion () side, and a transition-region seal member which is provided so as to cover at least a portion of a base end-side surface of the protrusion portion () and a leading edge-side transition region, which faces the leading edge portion () side, of a connection portion between the protrusion portion () and the suction-side surface (), the transition-region seal member being formed of a material having a hardness higher than that of the blade body ().

Steam turbine rotor blade, steam turbine, and method for manufacturing steam turbine rotor blade

Growing community of inventors

Yokohama, Japan

Shohei Danno