Title:
ROTATING BODY PROVIDED WITH BLADES
Document Type and Number:
WIPO Patent Application WO/2014/203907
Kind Code:
A1
Abstract:
A rotating body comprising a rotating body core (D), and a plurality of blades provided at regular intervals in a circumferential direction at the outer periphery or inner periphery of the rotating body core, the plurality of blades forming a continuous blade structure by being connected over the entire periphery via an annular connection part provided separately from the rotating body core, and the resonance frequency of the two nodal diameter mode of the rotating body being less than or equal to the second-order rotation harmonic frequency at a rated speed of the rotating body, wherein the order of the maximum mistuned components among order components of the mass distribution, stiffness distribution, or characteristic frequency distribution in the circumferential direction of the plurality of blades is defined as Nd, the plurality of blades are arranged so as to satisfy Nd≥5, and so as to be composed of order components the ratio of which obtained by being divided by the magnitude of the component of the order (Nd) is less than 1/2.
Inventors:
TANAKA RYOZO (JP)
TAMAI RYOJI (JP)
YAMAMOTO TOSHIYUKI (JP)
SATO YOSHICHIKA (JP)
SAKANO YOSHINOBU (JP)
TAMAI RYOJI (JP)
YAMAMOTO TOSHIYUKI (JP)
SATO YOSHICHIKA (JP)
SAKANO YOSHINOBU (JP)
Application Number:
PCT/JP2014/066056
Publication Date:
December 24, 2014
Filing Date:
June 17, 2014
Export Citation:
Assignee:
KAWASAKI HEAVY IND LTD (JP)
International Classes:
F01D5/16; F01D5/22; F01D25/00
Foreign References:
| JPS6025670A | 1985-02-08 | |||
| JPH1047007A | 1998-02-17 | |||
| JPH074203A | 1995-01-10 | |||
| JP2011051371A | 2011-03-17 | |||
| JPS6025670A | 1985-02-08 | |||
| JPH1047007A | 1998-02-17 |
Other References:
See also references of EP 3012406A4
Attorney, Agent or Firm:
SUGIMOTO, Shuji et al. (JP)
Shuji Sugimoto (JP)
Shuji Sugimoto (JP)
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