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:
Dec. 20, 2005
Filed:
Sep. 25, 2002
Hidekazu Uehara, Takasago, JP;
Tanehiro Shinohara, Takasago, JP;
Kouichi Akagi, Takasago, JP;
Masanori Yuri, Takasago, JP;
Takashi Nakano, Takasago, JP;
Shin Nishimoto, Takasago, JP;
Hidekazu Uehara, Takasago, JP;
Tanehiro Shinohara, Takasago, JP;
Kouichi Akagi, Takasago, JP;
Masanori Yuri, Takasago, JP;
Takashi Nakano, Takasago, JP;
Shin Nishimoto, Takasago, JP;
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Abstract
The shaft seal structure is based on a leaf seal that includes springs, disposed between the stator blades and the leaf seal ring, to force the leaf seal ring away from the rotation shaft, and pressure guiding grooves for guiding the fluid pressure, through a boundary of planar plates, to a space between the outer peripheral surface of the leaf seal ring and the inner peripheral surface of the stator blade. Also, a turbine may be provided with the leaf seal so as to reduce gas leakage from the high-pressure-region to the low-pressure-region as well as to control the frictional wear between the planar plates and the rotation shaft.