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:
Apr. 30, 1996
Filed:
Sep. 30, 1994
Theodore Papageorgiou, Winter Park, FL (US);
Westinghouse Electric Corporation, Pittsburgh, PA (US);
Abstract
A gas turbine vane airfoil has an aft cavity in which an insert is placed so as to form a cooling air passage between the insert and the walls that form the cavity. The insert serves to distribute cooling air around the passage. Cooling air from the passage exits the vane airfoil via film cooling holes in the pressure surface of the airfoil and via a passage formed in the trailing edge of the airfoil. A W-shaped flexible regulator seal is attached to the trailing edge of the insert and has legs that are pressed against ridges in the airfoil walls. Holes in the regulating seal regulate the amount of cooling air flowing from the passage surrounding the insert to the trailing edge passage, thereby preventing too low a pressure differential between the cooling air in the passage surrounding the insert and the hot compressed gas flowing over the airfoil, which would inhibit adequate film cooling.