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:
Jun. 09, 2015
Filed:
Dec. 20, 2011
Brian Kenneth Wardle, Brugg-Lauffohr, CH;
Christoph Didion, Wettingen, CH;
Herbert Brandl, Waldshut-Tiengen, DE;
Shailendra Naik, Gebenstorf, CH;
Brian Kenneth Wardle, Brugg-Lauffohr, CH;
Christoph Didion, Wettingen, CH;
Herbert Brandl, Waldshut-Tiengen, DE;
Shailendra Naik, Gebenstorf, CH;
ALSTOM TECHNOLOGY LTD., Baden, CH;
Abstract
A turbine blade of an axial turbine includes internal cooling fluid passages with radially outwardly extending passages connected to holes in the blade root. The holes are generally core printouts providing stability to the core during the casting process, but are not needed and need to be closed to guarantee the functioning of the cooling system. This is achieved by at least one covering plate. The plate is held by at least two slots located at the root of the turbine blade. Thus, the supply holes for cooling fluid located at the root section are closed by a simple mechanical device, e.g., a plate that does not require any subsequent brazing/welding operations. In addition, the plate is removable to facilitate inspection/cleaning, or further processing of the blade at service intervals.