Title:
SECONDARY FLOW SUPPRESSION STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2021/199718
Kind Code:
A1
Abstract:
A secondary flow suppression structure (10) comprising: a turbine rotor blade (12) that has an outer shroud (14); a turbine stator blade (22) that has an outer band (24) and that is positioned behind the turbine rotor blade (12); a seal surface (32) that faces the outer shroud (14) outside the outer shroud (14) in a radial direction; a fin (16) that projects from the outer shroud (14) toward the seal surface (32); and a cavity (42) that is formed into an annular shape so as to extend in a circumferential direction and that incudes an opening (44) formed between the seal surface (32) and the turbine stator blade (22) and is opened radially inward in a virtual surface (34) of the seal surface (32) extending rearward, wherein the front end (24a) of the outer band (24) is positioned at the same height as that of the virtual surface (34) in the radial direction or positioned inside the virtual surface (34) in the radial direction.
Inventors:
NISHII DAISUKE (JP)
HAMABE MASAAKI (JP)
HAMABE MASAAKI (JP)
Application Number:
PCT/JP2021/005338
Publication Date:
October 07, 2021
Filing Date:
February 12, 2021
Export Citation:
Assignee:
IHI CORP (JP)
International Classes:
F01D11/08; F01D5/20; F01D9/02
Domestic Patent References:
| WO2011090083A1 | 2011-07-28 |
Foreign References:
| JP2012211527A | 2012-11-01 | |||
| JP2002371802A | 2002-12-26 | |||
| JP2019203398A | 2019-11-28 | |||
| JP2016084730A | 2016-05-19 | |||
| JP2011241826A | 2011-12-01 | |||
| JP2011208602A | 2011-10-20 | |||
| JP2011001894A | 2011-01-06 | |||
| JP2015108340A | 2015-06-11 |
Attorney, Agent or Firm:
MIYOSHI Hidekazu et al. (JP)
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