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. 21, 2003
Filed:
Oct. 22, 2001
Shigehiro Shiozaki, Takasago, JP;
Yasuoki Tomita, Takasago, JP;
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Abstract
A gas turbine segmental ring has an increased rigidity to suppress a thermal deformation and enables less cooling air leakage by less number of connecting portions of segment structures. Cooling air ( ) from a compressor flows through cooling holes ( ) of an impingement plate ( ) to enter a cavity ( ) and to impinge on a segmental ring ( ) for cooling thereof. The cooling air ( ) further flows into cooling passages ( ) from openings ( ) of the cavity ( ) for cooling an interior of the segmental ring ( ) and is discharged into a gas path from openings of a rear end of the segmental ring ( ). Waffle pattern ( ) of ribs arranged in a lattice shape is formed on an upper surface of the segmental ring ( ) to thereby increase the rigidity. A plurality of slits ( ) are formed in flanges ( ) extending in the turbine circumferential direction to thereby absorb the deformation and thermal deformation of the segmental ring ( ) is suppressed.