US 11,668,466 B2
Combustor nozzle assembly and gas turbine combustor including same
Mu Hwan Chon, Changwon (KR); and Young Jun Shin, Seongnam (KR)
Assigned to DOOSAN ENERBILITY CO., LTD, Changwon (KR)
Filed by DOOSAN ENERBILITY CO., LTD, Changwon (KR)
Filed on Jun. 27, 2021, as Appl. No. 17/359,574.
Claims priority of application No. 10-2020-0088931 (KR), filed on Jul. 17, 2020.
Prior Publication US 2022/0018542 A1, Jan. 20, 2022
Int. Cl. F23R 3/34 (2006.01); F23R 3/14 (2006.01); F23R 3/28 (2006.01)
CPC F23R 3/343 (2013.01) [F23R 3/14 (2013.01); F23R 3/286 (2013.01); F23R 3/28 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A combustor nozzle assembly comprising:
a central nozzle tube;
an inner nozzle tube surrounding the central nozzle tube in a spaced-apart state;
an outer nozzle tube surrounding the inner nozzle tube in a spaced-apart state;
a pilot fuel injector provided between the central nozzle tube and the inner nozzle tube; and
a main fuel injector provided between the inner nozzle tube and the outer nozzle tube,
wherein the pilot fuel injector comprises:
a pilot annular ring disposed between the central nozzle tube and the inner nozzle tube; and
a plurality of pilot struts extending radially from the central nozzle tube toward the pilot annular ring,
wherein the pilot annular ring includes a plurality of first fuel injection holes along a circumferential direction thereof.