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:
Mar. 24, 1992
Filed:
Sep. 10, 1990
Kent G Hultgren, Winter Park, FL (US);
John C Matarazzo, Orlando, FL (US);
Westinghouse Electric Corp., Pittsburgh, PA (US);
Abstract
An apparatus and method are provided for minimizing differential thermal expansion in external cooling air structures formed on the shrouds of the vane segments of a gas turbine. The external cooling air structure is formed from a laminate comprised of two layers joined in sandwich-like fashion. A passageway, which may be of a serpentine arrangement, is formed between the two layers of the laminate. Hot gas flowing over the shroud is directed through the passageway, thereby heating the structure so that its temperature is close to that of the shroud. Cooling air is bled into the hot gas directed to the passageway so as to reduce the temperature of the hot gas flowing through the passageway and prevent overheating of the external cooling air structure.