Title:
A seal fin, seal structure, turbo machinery, and a manufacturing method of a seal fin
Document Type and Number:
Japanese Patent JP6209199
Kind Code:
B2
Abstract:
There are provided a seal fin, a seal structure, a turbo machine, and a method for manufacturing a seal fin. The seal fin suppresses leak of a fluid from a gap between a first and a second structures facing each other in a radius direction, and is formed on the first structure while keeping a clearance with respect to the second structure. The seal fin includes: a fin main body extending in the radius direction; and a protrusion being formed between a front face of the fin main body and a tip face and protruding toward an upstream side. A length of the protrusion is 1.5 times a length of the fin main body or less; an angle of the protrusion is 75 degrees or less; and a tilt angle of the fin main body is set in a range of −60 degrees or more and 60 degrees or less.
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Inventors:
Toyoharu Nishikawa
Yoshihiro Kuwamura
Koji Oyama
Hama Yuhisa Ta
Hideaki Sugishita
Yoshihiro Kuwamura
Koji Oyama
Hama Yuhisa Ta
Hideaki Sugishita
Application Number:
JP2015240487A
Publication Date:
October 04, 2017
Filing Date:
December 09, 2015
Export Citation:
Assignee:
Mitsubishi Hitachi Power Systems Co., Ltd.
International Classes:
F01D11/02; B23B5/00; B24B9/00; F01D5/20; F01D11/08; F01D25/00; F02C7/28; F16J15/447
Domestic Patent References:
| JP62133902U | ||||
| JP2013019537A | ||||
| JP2011237033A | ||||
| JP2001200937A | ||||
| JP2015108301A |
Attorney, Agent or Firm:
Yu Sanada