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:
Aug. 04, 2020
Filed:
Dec. 22, 2015
Mitsubishi Hitachi Power Systems, Ltd., Kanagawa, JP;
Azumi Yoshida, Tokyo, JP;
Hidekazu Uehara, Tokyo, JP;
Hiroharu Oyama, Kanagawa, JP;
Kohei Ozaki, Tokyo, JP;
Katsuhisa Hamada, Yokohama, JP;
Hideaki Sugishita, Tokyo, JP;
Toyoharu Nishikawa, Tokyo, JP;
Yoshihiro Kuwamura, Tokyo, JP;
Kohei Hatano, Tokyo, JP;
Keisuke Matsuyama, Tokyo, JP;
MITSUBISHI HITACHI POWER SYSTEMS, LTD., Kanagawa, JP;
Abstract
A seal device for a turbine is disposed around a rotor so as to separate a high-pressure space and a low-pressure space and includes: a plurality of thin plates arranged along an outer peripheral surface of the rotor. Each of the thin plates has a thin-plate tip surface facing the outer peripheral surface of the rotor; a first side plate disposed so as to face the high-pressure space and covering outer peripheral regions of first side surfaces; and a second side plate disposed so as to face the low-pressure space and covering outer peripheral regions of second side surfaces. The first side surface of each of the thin plates is covered with the first side plate in a region extending further to an inner side, in a radial direction of the rotor, than a region of the second side surface covered with the second side plate.