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. 21, 2009
Filed:
Jul. 10, 2006
Shailandra Naik, Gebenstorf, CH;
Sacha Parneix, Mulhouse, FR;
Ulrich Rathmann, Baden, CH;
Helene Saxer-felici, Mellingen, CH;
Stefan Schlechtriem, Taegerig, CH;
Beat Von Arx, Trimbach, CH;
Shailandra Naik, Gebenstorf, CH;
Sacha Parneix, Mulhouse, FR;
Ulrich Rathmann, Baden, CH;
Helene Saxer-Felici, Mellingen, CH;
Stefan Schlechtriem, Taegerig, CH;
Beat Von Arx, Trimbach, CH;
Alstom Technology Ltd, Baden, CH;
Abstract
A cooled blade for a gas turbine has a blade airfoil, which emerges from a blade root and a blade shank and has a leading edge and a trailing edge and, within the blade airfoil, a plurality of sequential coolant ducts, in terms of flow, extending in a radial direction. A first coolant duct along the leading edge, and a second coolant duct along the trailing edge, have a main flow of a coolant flowing through them from the blade root to the tip of the blade airfoil. An inlet of the first coolant duct is in connection with a main coolant inlet, and an outlet of the first coolant duct is in connection with the inlet to the second coolant duct via a first deflection region. A third coolant duct is arranged between the first and the second coolant duct and a second deflection region. An additional flow of cooler coolant provided from outside is added from the third coolant duct into the heated main flow of the coolant flowing into the second coolant duct. An orifice can, for example, extend from the main coolant inlet to the second deflection region.