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:
Aug. 29, 2023
Filed:
Mar. 30, 2018
Siemens Energy Global Gmbh & Co. KG, Munich, DE;
Ross Gustafson, Charlotte, NC (US);
Li Shing Wong, Oviedo, FL (US);
Farzad Taremi, Palm Beach Gardens, FL (US);
SIEMENS ENERGY GLOBAL GMBH & CO. KG, Munich, DE;
Abstract
A turbine stage includes a first airfoil and a second airfoil extending respectively from a first platform and a second platform that form an endwall for a flow passage. The endwall has a nominal surface that is axisymmetric about an axis of the turbine stage. The endwall further includes at least one contoured region that is non-axisymmetric with respect to the axis. The at least one contoured region extends from the first platform to the second platform across a platform splitline. The global maximum variation in elevation ΔEW of the endwall is at least 3% of an axial chord length L of the airfoils on the endwall. The maximum variation in elevation ΔMF at the mate facea of the platforms lies in the range 15-60% ΔEW.