Title:
回転機械翼及び回転機械
Document Type and Number:
Japanese Patent JP6801973
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a rotary machine blade stabilized in vibration frequency and friction attenuation characteristics in vibration, a rotary machine including the rotary machine blade, and a damper device for the rotary machine blade.SOLUTION: A rotary machine blade includes a first wall portion, a second wall portion, and a leaf spring and a guide portion respectively disposed in a space formed between the first wall portion and the second wall portion. The leaf spring includes a fixed portion fixed to the first wall portion, and a leaf spring-side opposed region positioned at a rear edge side with respect to the fixed portion in a blade chord line direction, and opposed to the second wall portion in an energizing direction caused by an elastic deformation state, and the second wall portion includes a second wall portion-side opposed region opposed to the leaf spring-side opposed region. The first wall portion includes a first wall portion-side opposed region opposed to the leaf spring-side opposed region, and the guide portion includes a first guide portion disposed between the leaf spring-side opposed region and the first wall portion-side opposed region to limit a size of a clearance between the leaf spring-side opposed region and the second wall portion-side opposed region.SELECTED DRAWING: Figure 4
Inventors:
Naoki Onori
Hiroyuki Yamashita
Hideaki Sato
Takashi Maruyama
Hiroyuki Yamashita
Hideaki Sato
Takashi Maruyama
Application Number:
JP2016059477A
Publication Date:
December 16, 2020
Filing Date:
March 24, 2016
Export Citation:
Assignee:
Mitsubishi Power, Ltd.
International Classes:
F01D9/02; F01D5/16; F01D5/18; F01D5/26; F01D25/06
Domestic Patent References:
| JP2008133825A | ||||
| JP2015137634A | ||||
| JP2013072333A | ||||
| JP9195799A |
Foreign References:
| US20100189933 |
Attorney, Agent or Firm:
Seishin ip patent business corporation