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Title:
NESTED CLOSURE TURBINE BUCKET GROUP
Document Type and Number:
Japanese Patent JP2007292074
Kind Code:
A
Abstract:

To provide an improved closure turbine bucket capable of supporting aerofoil without generating excessive stress.

A closure bucket group 100 is installed on a dovetail 140 of a turbine wheel 150. The closure bucket group 100 may include a leading bucket 110 with a leading bucket rear side, a closure bucket 120 with a closure bucket front side and a closure bucket rear side, and a trailing bucket 130 with a trailing bucket front side. The leading bucket rear side and the closure bucket front side define a pair of first enclosed keyway 390, and the closure bucket rear side and the trailing bucket front side define a pair of second enclosed keyway 400. A plurality of keys 410 and 420 may be arranged in the first enclosed keyway 390 and the second enclosed keyway 400.

COPYRIGHT: (C)2008,JPO&INPIT


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Inventors:
CARUSO DAVID ALAN
LAVASH JOHN CLELAND
Application Number:
JP2007111579A
Publication Date:
November 08, 2007
Filing Date:
April 20, 2007
Export Citation:
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Assignee:
GEN ELECTRIC
International Classes:
F01D5/26; F01D5/30
Domestic Patent References:
JPS62111102A1987-05-22
JPS623102A1987-01-09
JP2000220405A2000-08-08
Foreign References:
US1415266A1922-05-09
US2220918A1940-11-12
US2844355A1958-07-22
US4165949A1979-08-28
GB2006884A1979-05-10
EP0369926A11990-05-23
Attorney, Agent or Firm:
Kenichi Matsumoto
Hirokazu Ogura
Toshihisa Kurokawa
Arakawa Satoshi



 
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