Fuel injector having an ignitor for igniting a combustor of a gas turbine
AssigneeGeneral Electric Company
InventorsKaitlin Marie Graham, James Scott Flanagan, Jeffrey Scott LeBegue
Life of this patent
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Abstract
A fuel injector for a combustor of a gas turbine includes an annular main body. A fluid circuit extends at least partially through the main body. An axially extending inner body extends within the main body. The inner body at least partially defines an inner chamber that extends at least partially through the inner body. The inner chamber is in fluid communication with the fluid circuit. A retractable igniter extends linearly outward from the inner chamber when the fluid circuit is charged.
Claims20
A fuel injector for a combustor of a gas turbine, comprising:
- a. an annular main body;
- b. a fluid circuit that extends at least partially through the main body;
- c. an axially extending inner body that extends within the main body;
- d. an inner chamber at least partially defined within the inner body, the inner chamber being in fluid communication with the fluid circuit;
- and
- e. a retractable igniter that extends linearly outward from the inner chamber when the fluid circuit is charged.
A combustor for a gas turbine, comprising:
- a. an end cover coupled to a casing, a fuel nozzle that extends downstream from the end cover, a cap assembly that at least partially surrounds a portion of the fuel nozzle, and an annular liner that extends downstream from the cap assembly;
- and
- b. a fuel injector that extends radially through the liner, the fuel injector comprising:
- i. an annular main body that at least partially defines a flow path through the fuel injector, the main body having a downstream end;
- ii. a fluid circuit that extends at least partially through the main body;
- iii. an inner body disposed within the flow path of the main body, the inner body having an opening at a downstream end of the inner body;
- iv. an inner chamber at least partially defined within the inner body, the inner chamber being in fluid communication with the fluid circuit;
- and
- v. a retractable igniter disposed within the inner chamber, the igniter extending linearly through the opening of the inner body and at least partially into the flow path of the main body when the fluid circuit is charged.
A gas turbine comprising:
- a. a compressor section;
- b. a combustion section downstream from the compressor section, the combustion section having a combustor, the combustor having at least one annular liner that at least partially defines a hot gas path through the combustor;
- c. a turbine section downstream from the combustion section;
- and
- d. a fuel injector that extends at least partially through the liner of the combustor, the fuel injector comprising:
- i. an annular main body that at least partially defines a flow path through the fuel injector;
- ii. a fluid circuit that extends at least partially through the main body;
- iii. an inner chamber that extends at least partially through the main body, the inner chamber being in fluid communication with the fluid circuit;
- and
- iv. a retractable igniter that actuates linearly outward from the inner chamber into the flow path of the main body towards the hot gas path when the fluid circuit is charged.
Dependencies are inferred from the claim text.