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Title:
STEAM TURBINE, AND BLADE
Document Type and Number:
WIPO Patent Application WO/2021/200954
Kind Code:
A1
Abstract:
This steam turbine comprises: a rotating shaft that extends along an axis; a plurality of rotor blades that are arranged in the circumferential direction and that extend in a radial direction from the outer circumferential surface of the rotating shaft; a casing body that covers the rotating shaft and the rotor blades from the outer circumference side; and a plurality of stationary blades that extend in the radial direction from a position on the inner circumferential surface of the casing body on the upstream side of the rotor blades and that are arranged in the circumferential direction. A plurality of microgrooves that extend in the steam flow direction are formed on the surface of the rotor blades and/or the stationary blades.

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Inventors:
SENOO SHIGEKI (JP)
TABATA SOICHIRO (JP)
Application Number:
PCT/JP2021/013554
Publication Date:
October 07, 2021
Filing Date:
March 30, 2021
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
MITSUBISHI POWER LTD (JP)
International Classes:
F01D9/02; F01D5/28
Foreign References:
JPS6480705A1989-03-27
JP2017096261A2017-06-01
JP2014095309A2014-05-22
JP2014531989A2014-12-04
US20180283180A12018-10-04
JP2014077397A2014-05-01
US1862827A1932-06-14
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
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