Patent · US Active

Gas turbine engine transition duct and turbine center frame

US10344602B2 · kind B2 · utility

0Cited by

10References

25Claims

0Family size

Assignee

General Electric Company · US

Inventors

Harjit S. Hura · Cincinnati, US
Paul Hadley Vitt · Monroe, US
Brian David Keith · Cincinnati, US
Jonathan Ong · Garching an der Alz, DE

Key dates

Filing date	Apr 18, 2016
Grant date	Jul 9, 2019
Priority date	—
Expiry date	Jun 27, 2037

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T50/60
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A transition duct includes fairings with transition duct flow passage and hollow fairing airfoils extending between outer and inner walls of fairings and means for smoothing pressure gradients along inner wall. One means is a contracting duct flow area of flow passage from leading edge of fairing airfoil to about 30% of fairing chord. Leading edges of fairing airfoil intersect outer walls aft of regions of high curvature of outer walls. Leading edges may curve axially aftwardly and radially into fairing airfoils and transition duct flow passage between radially outer and inner walls from radially outer and inner intersection points. Transition duct downstream second area/upstream first area may be greater than about 1.35. Turbine center frame may include outer ring coupled to central hub with struts extending through hollow airfoils.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.