System for supplying fuel to a late-lean fuel injector of a combustor
A system for supplying fuel to a combustor includes a combustion chamber and a fuel nozzle that provides fluid communication into the combustion chamber. A plurality of passages circumferentially arranged around the combustion chamber provide fluid communication into the combustion chamber. A liquid fuel plenum provides fluid communication to the plurality of passages. A baffle circumferentially surrounds at least a portion of the liquid fuel plenum inside the plurality of passages and forms a plurality of lobes around the liquid fuel plenum.
1. A system for supplying fuel to a combustor, comprising:
a. a combustion chamber;
b. a fuel nozzle that provides fluid communication into the combustion chamber;
c. a plurality of passages circumferentially arranged surrounding the combustion chamber, wherein the plurality of passages provide fluid communication into the combustion chamber;
d. a liquid fuel plenum that provides fluid communication to the plurality of passages;
e. a baffle circumferentially surrounding at least a portion of the liquid fuel plenum inside the plurality of passages, wherein the baffle forms a plurality of lobes around the liquid fuel plenum and;
f. a plurality of gaseous fuel ports circumferentially surrounding the baffle inside the plurality of passages.
2. The system as in claim 1 , wherein at least one of the plurality of passages extends inside the combustion chamber.
3. The system as in claim 1 , wherein at least a portion of the liquid fuel plenum circumferentially surrounds the combustion chamber.
4. The system as in claim 1 , further comprising a sleeve that circumferentially surrounds at least a portion of the combustion chamber and wherein the plurality of passages provide fluid communication through the sleeve.
5. The system as in claim 1 , wherein the liquid fuel plenum terminates at a plurality of liquid fuel ports radially aligned between the plurality of lobes.
6. The system as in claim 1 , wherein the baffle defines a first fluid passage between the liquid fuel plenum and the baffle and a second fluid passage between the baffle and the plurality of passages.
7. A system for supplying fuel to a combustor, comprising:
a. a combustion chamber;
b. a liner that circumferentially surrounds at least a portion of the combustion chamber;
c. a plurality of passages through the liner and into the combustion chamber;
d. a liquid fuel plenum that extends inside each of the plurality of passages;
e. a baffle circumferentially surrounding at least a portion of the liquid fuel plenum inside the plurality of passages, wherein the baffle forms a plurality of lobes around the liquid fuel plenum and;
f. a plurality of gaseous fuel ports circumferentially arranged around the baffle inside the plurality of passages.
8. The system as in claim 7 , wherein at least one of the plurality of passages extends inside the combustion chamber.
9. The system as in claim 7 , further comprising a sleeve that circumferentially surrounds at least a portion of the combustion chamber and wherein the plurality of passages provide fluid communication through the sleeve.
10. The system as in claim 7 , wherein the liquid fuel plenum terminates at a plurality of liquid fuel ports radially aligned with the plurality of lobes.
11. The system as in claim 7 , wherein the liquid fuel plenum terminates at a plurality of liquid fuel ports radially aligned between the plurality of lobes.
12. The system as in claim 7 , wherein the baffle defines a first fluid passage between the liquid fuel plenum and the baffle and a second fluid passage between the baffle and the plurality of passages.
13. A system for supplying fuel to a combustor, comprising:
a. a combustion chamber;
b. a liner that circumferentially surrounds at least a portion of the combustion chamber;
c. a plurality of injectors circumferentially arranged around the combustion chamber, wherein the plurality of injectors provide fluid communication through the liner and into the combustion chamber;
d. a liquid fuel plenum centrally aligned inside at least some of the plurality of injectors;
e. a baffle circumferentially surrounding at least a portion of the liquid fuel plenum inside the at least some of the plurality of injectors, wherein the baffle forms a plurality of lobes around the liquid fuel plenum; and
f. a plurality of gaseous fuel ports circumferentially arranged around the baffle inside the plurality of passages.
14. The system as in claim 13 , wherein the baffle is connected to at least one of the liner or the liquid fuel plenum.
15. The system as in claim 13 , wherein the liquid fuel plenum terminates at a plurality of liquid fuel ports radially aligned with the plurality of lobes.
16. The system as in claim 13 , wherein the liquid fuel plenum terminates at a plurality of liquid fuel ports radially aligned between the plurality of lobes.
17. The system as in claim 13 , wherein the baffle defines a first fluid passage between the liquid fuel plenum and the baffle and a second fluid passage between the baffle and the plurality of passages.