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. 02, 1999
Filed:
Nov. 14, 1996
Neil Leslie Kilpatrick, Winter Springs, FL (US);
George Franklin Dailey, Pittsburgh, PA (US);
Siemens Westinghouse Power Corporation, Orlando, FL (US);
Abstract
A process for repairing leaks in turbine generators that have water cooled stator coils with hollow conductor strands, wherein the lead ends of the conductor strands are joined to a header. First a vacuum enclosure is provided around a portion of one of the stator coils in proximity to the header. Then a vacuum is applied to the portion. Finally, a resin is injected into voids in the portion. In a second embodiment, the header first is cut into an outboard section, and into an inboard section that remains attached to the conductor strands. Then the exposed lead ends of the conductor strands and the attached inboard section are cleaned to remove oxidation. Next, a water-tight braze seal is applied over the lead ends of the conductor strands. Then the stator coil and the inboard section are joined to a new outboard section and a vacuum is subsequently applied to the inboard section. The resin is then injected into voids in the inboard section.