Flame tolerant secondary fuel nozzle
US8959921B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 13, 2010 |
| Grant date | Feb 24, 2015 |
| Priority date | — |
| Expiry date | Jul 23, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23R2900/03044
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A combustor for a gas turbine engine includes a plurality of primary nozzles configured to diffuse or premix fuel into an air flow through the combustor; and a secondary nozzle configured to premix fuel with the air flow. Each premixing nozzle includes a center body, at least one vane, a burner tube provided around the center body, at least two cooling passages, a fuel cooling passage to cool surfaces of the center body and the at least one vane, and an air cooling passage to cool a wall of the burner tube. The cooling passages prevent the walls of the center body, the vane(s), and the burner tube from overheating during flame holding events.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.