Power plants – Combustion products used as motive fluid
Patent
1996-03-29
1997-11-11
Freay, Charles G.
Power plants
Combustion products used as motive fluid
60 39091, 60 3911, 60737, 60742, 239428, F02L 726, F02G 300
Patent
active
056851391
ABSTRACT:
A fuel nozzle for a gas turbine includes a nozzle body having a tip portion, the nozzle body including an inner tube defining an axially extending air passage; an intermediate tube concentrically arranged and radially spaced from the inner tube and defining a diffusion fuel passage therebetween; and an outer tube concentrically arranged and radially spaced from the intermediate tube and defining a premix fuel passage therebetween. The outer tube has a plurality of radially extending injectors in communication with the premix fuel passage. The premix fuel passage is further defined in part by an outer tube wall portion formed with at least one weakened region adapted to burn through in the event of a flashback, thereby causing a substantial portion of premix fuel to bypass the injectors and to exit the nozzle body at the at least one weakened region. A related method is also disclosed.
REFERENCES:
patent: 4292801 (1981-10-01), Wilkes et al.
patent: 4850196 (1989-07-01), Scalzo et al.
patent: 4982570 (1991-01-01), Waslo et al.
patent: 5259184 (1993-11-01), Borkowicz et al.
patent: 5274991 (1994-01-01), Fitts
patent: 5408830 (1995-04-01), Lovett
Davis, Jr. L. Berkley
Fitts David O.
Mick Warren J.
Sciocchetti Michael B.
Freay Charles G.
General Electric Company
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