Back to results
US 12,624,836 B2Granted
Combustor nozzle, combustor, and gas turbine including same
AssigneeDoosan Enerbility Co., Ltd.
InventorsJoong Hyun Lim, Young Gun Go, Kyoung Taek Oh, Sang Pil Jo
Life of this patent
Estimating the term…
Abstract
A combustor nozzle includes a plurality of mixing tubes through which air and fuel flow, an accommodation tube accommodating and supporting the plurality of mixing tubes therein, a first fuel tube coupled to the accommodation tube to supply a first fuel into the accommodation tube, a second fuel tube coupled to the accommodation tube to supply a second fuel into the accommodation tube, a first fuel supply member supplying the first fuel into each mixing tube, and a second fuel supply member supplying the second fuel into each mixing tube.
Claims16
A combustor nozzle comprising:
- a plurality of mixing tubes, extending in an axial direction, through which air and fuel flow;
- an accommodation tube accommodating and supporting the plurality of mixing tubes therein;
- a first fuel tube coupled to the accommodation tube to supply a first fuel into the accommodation tube;
- a second fuel tube coupled to the accommodation tube to supply a second fuel into the accommodation tube;
- a plurality of first fuel supply members supplying the first fuel into the plurality of mixing tubes;
- and
- a plurality of second fuel supply members supplying the second fuel into the plurality of mixing tubes, each second fuel supply member having a rear end configured to receive the second fuel supplied from the second fuel tube and a leading end coupled with a hole formed on a corresponding mixing tube from among the plurality of mixing tubes to discharge the second fuel into the corresponding mixing tube,
- wherein each of the plurality of second fuel supply members is provided with a guide portion for injecting the second fuel toward a wall portion of an inner circumferential wall of the corresponding mixing tube, the wall portion being axially aligned with and located directly downstream of the hole formed on the corresponding mixing tube, and the guide portion is curved in an arc or inclined toward the wall portion of the inner circumferential wall such that an outlet of each second fuel supply member is open toward the wall portion of the inner circumferential wall,
- wherein a virtual plane forming the outlet of each second fuel supply member is formed to be inclined at a first inclination angle with respect to the inner circumferential wall of the corresponding mixing tube located downstream of the outlet, and the first inclination angle ranges from 30 degrees to 80 degrees so as to inject the second fuel toward the wall portion of the inner circumferential wall of the corresponding mixing tube.
6 more elements
A combustor comprising:
- a burner having a plurality of nozzles through which fuel and air are injected;
- and
- a duct assembly coupled to one side of the burner to allow the fuel and the air to be combusted therein and combustion gases to be transferred to a turbine, wherein each nozzle of the plurality of nozzles comprises:
- a plurality of mixing tubes, extending in an axial direction, through which air and fuel flow;
- an accommodation tube accommodating and supporting the plurality of mixing tubes therein;
- a first fuel tube coupled to the accommodation tube to supply a first fuel into the accommodation tube;
- a second fuel tube coupled to the accommodation tube to supply a second fuel into the accommodation tube;
- a plurality of first fuel supply members supplying the first fuel into the plurality of mixing tubes;
- and
- a plurality of second fuel supply members supplying the second fuel into the plurality of mixing tubes, each second fuel supply member having a rear end configured to receive the second fuel supplied from the second fuel tube and a leading end coupled with a hole formed on a corresponding mixing tube from among the plurality of mixing tubes to discharge the second fuel into the corresponding mixing tube,
- wherein each second fuel supply member is provided with a guide portion for injecting the second fuel toward a wall portion of an inner circumferential wall of the corresponding mixing tube, the wall portion being axially aligned with and located directly downstream of the hole formed on the corresponding mixing tube, and the guide portion is curved in an arc or inclined toward the wall portion of the inner circumferential wall such that an outlet of each second fuel supply member is open toward the wall portion of the inner circumferential wall,
- wherein a virtual plane forming the outlet of each second fuel supply member is formed to be inclined at a first inclination angle with respect to the inner circumferential wall of the corresponding mixing tube located downstream of the outlet, and the first inclination angle ranges from 30 degrees to 80 degrees so as to inject the second fuel toward the wall portion of the inner circumferential wall of the corresponding mixing tube.
9 more elements
A gas turbine comprising:
- a compressor compressing an externally introduced air;
- a combustor mixing the compressed air from the compressor with fuel to produce a mixture and combusting the mixture;
- and
- a turbine having a plurality of turbine blades rotated by the combustion gases from the combustor, wherein the combustor comprises:
- a burner having a plurality of nozzles through which fuel and air are injected;
- and
- a duct assembly coupled to one side of the burner to allow the fuel and the air to be combusted therein and combustion gases to be transferred to a turbine, wherein each nozzle of the plurality of nozzles includes:
- a plurality of mixing tubes, extending in an axial direction, through which air and fuel flow;
- an accommodation tube accommodating and supporting the plurality of mixing tubes therein;
- a first fuel tube coupled to accommodation tube to supply a first fuel into the accommodation tube;
- a second fuel tube coupled to accommodation tube to supply a second fuel into the accommodation tube;
- a plurality of first fuel supply members supplying the first fuel into the plurality of mixing tubes;
- and
- a plurality of second fuel supply members supplying the second fuel into the plurality of mixing tubes, each second fuel supply member having a rear end configured to receive the second fuel supplied from the second fuel tube and a leading end coupled with a hole formed on a corresponding mixing tube from among the plurality of mixing tubes to discharge the second fuel into the corresponding mixing tube,
- wherein each second fuel supply member is provided with a guide portion for injecting the second fuel toward a wall portion of an inner circumferential wall of the corresponding mixing tube, the wall portion being axially aligned with and located directly downstream of the hole formed on the corresponding mixing tube, and the guide portion is curved in an arc or inclined toward the wall portion of the inner circumferential wall such that an outlet of each second fuel supply member is open toward the wall portion of the inner circumferential wall,
- wherein a virtual plane forming the outlet of each second fuel supply member is formed to be inclined at a first inclination angle with respect to the inner circumferential wall of the corresponding mixing tube located downstream of the outlet, and the first inclination angle ranges from 30 degrees to 80 degrees so as to inject the second fuel toward the wall portion of the inner circumferential wall of the corresponding mixing tube.
13 more elements
Dependencies are inferred from the claim text.