Title:
TURBINE STATOR VANE AND STEAM TURBINE
Document Type and Number:
WIPO Patent Application WO/2023/276385
Kind Code:
A1
Abstract:
A turbine stator vane comprising: a stator vane body extending in a radial direction intersecting the flow direction of steam; a recovery potion that is formed on the surface of the stator vane body, and recovers a liquid film flowing along the surface; and a center region, which is formed on the surface of the stator vane body and in which a plurality of first fine grooves extending from the upstream side toward the recovery portion in the flow direction are formed, wherein the interval between adjacent first fine grooves narrows from the upstream side toward the recovery portion.
Inventors:
MIZUMI SHUNSUKE (JP)
TABATA SOICHIRO (JP)
ISHIBASHI KOJI (JP)
MIYAKE SATOSHI (JP)
TABATA SOICHIRO (JP)
ISHIBASHI KOJI (JP)
MIYAKE SATOSHI (JP)
Application Number:
PCT/JP2022/015932
Publication Date:
January 05, 2023
Filing Date:
March 30, 2022
Export Citation:
Assignee:
MITSUBISHI POWER LTD (JP)
MITSUBISHI HEAVY IND LTD (JP)
MITSUBISHI HEAVY IND LTD (JP)
International Classes:
F01D9/02; F01D25/32
Foreign References:
| JPS6480705A | 1989-03-27 | |||
| JPS63263204A | 1988-10-31 | |||
| JP2017106451A | 2017-06-15 | |||
| EP2985426A1 | 2016-02-17 | |||
| JP2021106944A | 2021-07-29 | |||
| JP2016166569A | 2016-09-15 |
Other References:
See also references of EP 4212705A4
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
Download PDF:
Previous Patent: STICKY NOTE FOR STUDY, STICKY NOTE SET FOR STUDY, AND COMPUTER PROGRAM
Next Patent: ROTOR AND MOTOR
Next Patent: ROTOR AND MOTOR