The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 12, 2021
Filed:
Oct. 07, 2014
Applicant:
Mitsubishi Hitachi Power Systems, Ltd., Kanagawa, JP;
Inventors:
Assignee:
MITSUBISHI POWER, LTD., Kanagawa, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04D 29/64 (2006.01); F04D 29/54 (2006.01); F04D 29/52 (2006.01); F01D 25/24 (2006.01); F01D 5/00 (2006.01); F01D 9/04 (2006.01);
U.S. Cl.
CPC ...
F04D 29/644 (2013.01); F01D 5/005 (2013.01); F01D 9/041 (2013.01); F01D 25/246 (2013.01); F04D 29/522 (2013.01); F04D 29/542 (2013.01); F05D 2220/31 (2013.01); F05D 2220/32 (2013.01); F05D 2230/70 (2013.01);
Abstract
A dummy ring assembly for removal is provided with a plurality of dummy rings. Each of the dummy rings has a dummy shroud section fitted into a vane ring groove of a casing into which a shroud of a vane segment is fitted, and has an arc shape whose central angle centered on a rotational axis is less than 90°. The dummy shroud sections of the plurality of dummy rings are fitted sequentially into the vane ring groove of the casing. The vane segment is removed from the casing by moving the dummy rings in a circumferential direction along the vane ring groove.