skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Flame tolerant secondary fuel nozzle

Patent ·
OSTI ID:1171102
; ; ; ;

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.

Research Organization:
General Electric Co., Schenectady, NY (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
FC26-05NT42643
Assignee:
General Electric Company (Schenectady, NY)
Patent Number(s):
8,959,921
Application Number:
12/835,227
OSTI ID:
1171102
Resource Relation:
Patent File Date: 2010 Jul 13
Country of Publication:
United States
Language:
English

References (17)

Hypersonic scramjet engine fuel injector patent January 1991
Premixed secondary fuel nozzle with integral swirler patent March 1993
Two stage (premixed/diffusion) gas only secondary fuel nozzle patent April 1993
Dry low NOx single stage dual mode combustor construction for a gas turbine patent November 1993
Gas turbine combustor patent February 1996
Tertiary fuel, injection system for use in a dry low NOx combustion system patent November 1996
Air fuel mixer for gas turbine combustor patent January 1997
Diffusion-premix nozzle for a gas turbine combustor and related method patent November 1997
Dual fuel mixer for gas turbine combustor patent July 1998
Mixer having intervane fuel injection patent October 2001
Gas only nozzle fuel tip patent April 2002
Swozzle based burner tube premixer including inlet air conditioner for low emissions combustion patent August 2002
Combustor liner with ring turbulators and related method patent January 2004
Burner tube and method for mixing air and gas in a gas turbine engine patent February 2006
Fully premixed secondary fuel nozzle with dual fuel capability patent January 2007
Liquid fuel enhancement for natural gas swirl stabilized nozzle and method patent-application April 2008
Flame Holding Tolerant Fuel and Air Premixer for a Gas Turbine Combustor patent-application April 2010

Similar Records

Related Subjects

42 ENGINEERING
33 ADVANCED PROPULSION SYSTEMS