STEAM TURBINE, BLADE, AND METHOD FOR IMPROVING PERFORMANCE AND RELIABILITY OF STEAM TURBINE

WIPO Patent Application WO/2021/200918

A1

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.

SENOO SHIGEKI (JP)
TABATA SOICHIRO (JP)
SAWATSUBASHI TETSUYA (JP)
MITSUI HIROYUKI (JP)
ASAI KUNIO (JP)
MATSUBARA RYUICHI (JP)
TATSUHARA KIYOSHI (JP)

PCT/JP2021/013492

October 07, 2021

March 30, 2021

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MITSUBISHI POWER LTD (JP)

F01D9/02; F01D5/28

JP2014077397A	2014-05-01
JP2014531989A	2014-12-04
JP2019502862A	2019-01-31
JPH0734804A	1995-02-03

MATSUNUMA Yasushi et al. (JP)

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