Turbine incorporating endwall fences

US11125089B2 · kind B2 · utility

Assignees

• General Electric Company · US
• GE AVIO S.R.L. · IT

Inventors

• Francesco Bertini · Tetti Gabriolotti, IT
• Aspi Rustom Wadia · Loveland, US
• Lyle Douglas Dailey · West Chester, US
• Andrea Arnone · Firenze, IT
• Filippo Rubechini · Firenze, IT
• Matteo Giovannini · Pratovecchio, IT
• Paul Hadley Vitt · Monroe, US
• Jeffrey Donald Clements · Evendale, US

Key dates

• Filing date: Aug 7, 2019
• Grant date: Sep 21, 2021
• Expiry date: Sep 14, 2039

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F05D2250/712
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A turbomachinery apparatus includes: a turbine, including: a turbine component defining an arcuate flowpath surface; an array of axial-flow turbine airfoils extending from the flowpath surface, the turbine airfoils defining spaces therebetween; and a plurality of fences extending from the flowpath surface, in the spaces between the turbine airfoils, each fence having opposed concave and convex sides extending between a leading edge and a trailing edge, wherein the fences have a nonzero camber and a constant thickness, are axially located near the leading edges of adjacent turbine airfoils, and wherein at least one of a chord dimension of the fences and a span dimension of the fences is less than the corresponding dimension of the turbine airfoils.