Thermally free aft frame for a transition duct
US6619915B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 6, 2002 |
| Grant date | Sep 16, 2003 |
| Priority date | — |
| Expiry date | Aug 6, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S138/04
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A transition duct with a thermally free aft frame for use in a gas turbine engine is disclosed. The transition duct includes an aft frame that is thermally free through the use of a plurality of retention lugs, bushings, and bulkhead assemblies. The aft frame is allowed to adjust from thermal changes as a result of relative sizing between the bushings and retention lugs of the aft frame. An additional feature of this invention is the use of radially extending ribs along the sidewalls of the aft frame, to form an interlocking sealing means with adjacent transition ducts to reduce the amount compressor air leakage into the turbine inlet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.