Mitsubishi Heavy Industries Limited

Mitsubishi Power, Ltd.

Ryuichi Matsubara

Kenji Sato

Masashi Yoshikawa

Shigeki Senoo

Soichiro Tabata

Hiroyuki Mitsui

Yuichi Shimizu

Kiyoshi Tatsuhara

Kunio Asai

Tetsuya Sawatsubashi

Toshiya Komuro

Hiroyuki Mizuma

Tatsuya Furukawa

Noboru Kurokawa

Osamu Fukushige

A steam turbine according to the present invention comprises: a shaft which rotates about the rotation axis thereof; a plurality of moving blades which extend in the radial direction from the outer peripheral surface of the shaft and which are arranged along the circumferential direction; a casing main body which covers the shaft and the moving blades from the outer peripheral side; a plurality of stationary blades which are arranged on the inner circumferential surface of the casing main body; and a substance supply unit which supplies, to the surfaces of the moving blades and/or the surfaces of the stationary blades, a film forming substance that is hydrophobic, wherein the substance supply unit has a storage unit, a supply passage which is formed inside the casing and through which the film forming substance flows, and discharge units which are formed inside the moving blades and/or the stationary blades and which guide the film forming substance to the surfaces.

Steam turbine, blade, and method for improving performance and reliability of steam turbine

A dehydrogenation processing method for a turbine blade of a steam turbine. The method includes a step of heating the turbine blade by suppling heating steam into a casing of the steam turbine after a steam turbine plant is stopped. The heating steam supplied to the casing has a temperature that is higher than steam passing through the turbine blade during operation of the steam turbine plant. The method further includes repeating the process of supplying the heating steam into the casing a multiple of times.

Dehydrogenation processing method for turbine blades

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Tokyo, Japan

Ryuichi Matsubara