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Title:
ROTARY MACHINE
Document Type and Number:
WIPO Patent Application WO/2017/163911
Kind Code:
A1
Abstract:
This rotary machine (100) is equipped with: a rotor (1) on the outer circumferential surface (1S) of which recesses (8) are formed; stator blades (7) each having a stator blade body (70) extending from the outside toward the inside in the radial direction of an axial line (Ac) and a shroud (71) provided on the inside of the stator blade body (70) in the radial direction; and fins (72) protruding from the inner circumferential surface (74) of the shroud (71) toward a bottom surface (83). The recesses (8) have a recess radial-direction wall surface (82) extending in the radial direction, and the recess radial-direction wall surface (82) has a first wall surface (85) extending to the outside in the radial direction, a second wall surface (86) extending farther to the outside in the radial direction than the first wall surface (85), and a protruding surface (84S) protruding from the first wall surface (85) toward the upstream side in the axial line (Ac) direction. The shroud (71) has a shroud radial-direction wall surface (73) facing the downstream side of the recess radial-direction wall surface (82) in the axial line (Ac) direction, and on the shroud there is formed a shroud groove section (75).

Inventors:
KUWAMURA Yoshihiro (16-5, Konan 2-chome, Minato-k, Tokyo 15, 〒1088215, JP)
MATSUMOTO Kazuyuki (16-5, Konan 2-chome, Minato-k, Tokyo 15, 〒1088215, JP)
Application Number:
JP2017/009556
Publication Date:
September 28, 2017
Filing Date:
March 09, 2017
Export Citation:
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Assignee:
MITSUBISHI HITACHI POWER SYSTEMS, LTD. (3-1 Minatomirai 3-Chome, Nishi-ku Yokohama-sh, Kanagawa 01, 〒2208401, JP)
International Classes:
F01D5/02; F01D11/02; F01D25/00; F02C7/28
Foreign References:
JPS61229903A1986-10-14
JPS6081202U1985-06-05
JP2006138259A2006-06-01
JPH08193501A1996-07-30
JP2015094220A2015-05-18
JP2015140916A2015-08-03
Attorney, Agent or Firm:
MORI Ryuichirou et al. (1-9-2, Marunouchi Chiyoda-k, Tokyo 20, 〒1006620, JP)
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