CN220287505U - Dual-fuel integrated igniter nozzle - Google Patents
Dual-fuel integrated igniter nozzle Download PDFInfo
- Publication number
- CN220287505U CN220287505U CN202321984764.XU CN202321984764U CN220287505U CN 220287505 U CN220287505 U CN 220287505U CN 202321984764 U CN202321984764 U CN 202321984764U CN 220287505 U CN220287505 U CN 220287505U
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- Prior art keywords
- fuel
- air inlet
- igniter
- nozzle
- nozzle body
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- 239000000446 fuel Substances 0.000 title claims abstract description 128
- 238000002156 mixing Methods 0.000 claims abstract description 27
- 230000009977 dual effect Effects 0.000 claims abstract description 18
- 238000004891 communication Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000002485 combustion reaction Methods 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 9
- 239000007789 gas Substances 0.000 description 9
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Pressure-Spray And Ultrasonic-Wave- Spray Burners (AREA)
Abstract
The utility model discloses a dual fuel integrated igniter nozzle, comprising: the nozzle body is provided with a first fuel pipe, a second fuel pipe, an igniter and an air inlet; the air inlet comprises a first air inlet and a second air inlet, the first air inlet is arranged close to the fuel outlets of the first fuel pipe and the second fuel pipe, and the second air inlet is arranged close to the ignition position of the igniter; the opening area of the first air inlet hole is larger than that of the second air inlet hole; the opening of the second air inlet hole is provided as a radial chamfer opening. Through the arrangement, the first air inlet and the second air inlet are formed in the nozzle body, the first air inlet is close to the fuel outlet, and meanwhile, the opening area of the first air inlet is larger than that of the second air inlet, so that after fuel is sprayed out, a large amount of air can be mixed at the first time, the mixing effect is improved, the mixing efficiency is improved, and the combustion stability is ensured.
Description
Technical Field
The utility model belongs to the technical field of gas turbines, and particularly relates to a dual-fuel integrated igniter nozzle.
Background
The gas turbine has the advantages of high efficiency, small volume, light weight, simple maintenance, good maneuverability, high automation degree, low manufacturing cost and the like, and is widely applied to aviation, land power generation, natural gas transportation, petroleum, railway and shipbuilding industries.
In the traditional gas turbine, the fuel adaptability of the nozzle of the combustion chamber is poor, the nozzle cannot be matched with the current abundant and various energy types, is not applicable to hydrogen, ammonia, a large amount of industrial byproduct gas, oilfield associated gas, biomass energy and the like, and seriously wastes energy;
meanwhile, for the traditional nozzle, the premixing space of fuel and air is not provided, so that the fuel is often ignited without being completely mixed with the air, the combustion stability is poor, and meanwhile, more exhaust pollutants are produced after combustion, and environmental pollution is easy to cause.
Disclosure of Invention
The present utility model is directed to solving at least one of the problems of the background art described above and providing a dual fuel integrated igniter nozzle.
To achieve the above object, a dual fuel integrated igniter nozzle of the present utility model includes:
the device comprises a nozzle body, a first fuel pipe, a second fuel pipe, an igniter and an air inlet, wherein the first fuel pipe, the second fuel pipe, the igniter and the air inlet are arranged on the nozzle body;
the air inlet comprises a first air inlet and a second air inlet, the first air inlet is arranged close to fuel outlets of the first fuel pipe and the second fuel pipe, and the second air inlet is arranged close to an ignition position of the igniter;
the opening area of the first air inlet hole is larger than that of the second air inlet hole;
the opening of the second air inlet hole is arranged as a radial chamfer opening.
Preferably, an igniter mounting plate is disposed within the nozzle body;
the igniter mounting plate separates the inner space of the nozzle body to form a fuel cavity and a blending cavity.
Preferably, the igniter is disposed in the nozzle body and fixedly connected with the igniter mounting plate.
Preferably, the first and second fuel tubes are in communication with the fuel chamber and the air inlet is in communication with the blending chamber.
Preferably, the first fuel pipe is inserted into the nozzle body and is connected with the igniter mounting plate in a sealing way to form a first fuel cavity;
the second fuel pipe is communicated with a space enclosed by the inner wall of the nozzle body, the igniter mounting plate and the first fuel pipe to form a second fuel cavity.
Preferably, the first fuel pipe is disposed on a central axis of the nozzle body, the igniter penetrates into the igniter mounting plate, one end of the igniter is located in the first fuel pipe, and the other end of the igniter is located in an inner space of the nozzle body.
Preferably, a first incident air hole and a second incident air hole are arranged on the igniter mounting plate;
the first incident air hole is communicated with the first fuel cavity and the blending cavity;
the second incident air hole is communicated with the second fuel cavity and the blending cavity.
Preferably, the chamfer angle of the radial chamfer opening is 45 ° or less.
Preferably, the second air inlet is provided as a key hole.
Preferably, the first air inlet holes and the second air inlet holes are uniformly circumferentially arranged along a side wall of the nozzle body, respectively.
Based on the above, the utility model has the beneficial effects that:
1. according to the scheme, the first air inlet and the second air inlet are formed in the nozzle body, the first air inlet is close to the fuel outlet, meanwhile, the opening area of the first air inlet is larger than that of the second air inlet, so that after fuel is sprayed out, the fuel can be mixed with a large amount of air at the first time, the mixing effect is improved, the mixing efficiency is improved, and the combustion stability is ensured;
2. according to the scheme, the igniter is arranged in the nozzle body, so that the igniter is not easily influenced by external environmental factors, the gas turbine can be normally used when being restarted after being started and flamed or being ignited under severe working conditions, and the ignition success rate is improved;
3. according to the scheme provided by the utility model, the second air inlet is provided with the radial inclined cut opening, so that after air enters the nozzle body through the second air inlet, rotational flow can be formed, fuel and space are stirred, and the mixing effect is further improved.
4. According to the scheme provided by the utility model, the first fuel cavity and the second fuel cavity are arranged between the fuel entering the first fuel pipe or the second fuel pipe and being sprayed out from the first incident air hole or the second incident air hole, so that the fuel can be stabilized in the two cavities after entering the nozzle body, the initial uniformity of the gas fuel can be effectively ensured, meanwhile, the sprayed fuel is stabilized, the stability of combustion can be ensured, and the tempering problem can be effectively avoided.
Drawings
FIG. 1 schematically illustrates a perspective view of a dual fuel integrated igniter nozzle in accordance with one embodiment of the utility model;
FIG. 2 schematically illustrates a top view of a dual fuel integral igniter nozzle in accordance with one embodiment of the utility model;
FIG. 3 schematically illustrates a cross-sectional view in the direction A-A' of FIG. 2 of one embodiment of the present utility model;
description of the drawings: the fuel injector comprises a nozzle body 10, a fuel cavity 101, a first fuel cavity 1011, a second fuel cavity 1012, a blend cavity 102, a first fuel pipe 20, a second fuel pipe 30, an igniter 40, an air inlet 50, a first air inlet 501, a second air inlet 502, an igniter mounting plate 60, a first incident air hole 601, a second incident air hole 602, and a mounting flange 70.
Detailed Description
The present disclosure will now be discussed with reference to exemplary embodiments. It should be understood that the embodiments discussed are merely to enable those of ordinary skill in the art to better understand and thus practice the teachings of the present utility model and do not imply any limitation on the scope of the utility model.
As used herein, the term "comprising" and variants thereof are to be interpreted as meaning "including but not limited to" open-ended terms. The term "based on" is to be interpreted as "based at least in part on". The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment.
Fig. 1 schematically illustrates a perspective view of a dual fuel integrated igniter nozzle according to an embodiment of the present utility model, fig. 2 schematically illustrates a top view of a dual fuel integrated igniter nozzle according to an embodiment of the present utility model, and fig. 3 schematically illustrates a cross-sectional view of an embodiment of the present utility model in the direction A-A' of fig. 2, as shown in fig. 1-3, a dual fuel integrated igniter nozzle according to the present utility model includes:
a nozzle body 10, a first fuel pipe 20, a second fuel pipe 30, an igniter 40, and an air inlet hole 50 provided on the nozzle body 10;
the air inlet 50 includes a first air inlet 501 and a second air inlet 502, the first air inlet 501 being disposed near the fuel outlet of the second fuel pipe 30 of the first fuel pipe 20, the second air inlet 502 being disposed near the ignition position of the igniter 40, the second air inlet 502 being located specifically on the upstream side of the ignition position;
the opening area of the first air inlet 501 is larger than the opening area of the second air inlet 502.
In the traditional nozzle, the fuel and the air are often burnt without being completely mixed, so that the combustion stability is poor, and meanwhile, more waste gas products after combustion are produced, so that the environmental pollution is easy to cause;
the first air inlet 501 is arranged close to the fuel outlets of the first fuel pipe 20 and the second fuel pipe 30, and the opening area is large, so that the fuel can be sprayed out to be in contact with a large amount of air immediately, pre-mixing is realized, and then the second air inlet 502 is used for further mixing, so that the mixing effect of the fuel and the air is improved, and the combustion stability is ensured.
Further, an igniter mounting plate 60 is provided in the nozzle body 10;
the igniter mounting plate 60 separates the interior space of the nozzle body, forming a fuel cavity 101 and a blending cavity 102.
The igniter 40 is disposed in the nozzle body 10 and fixedly connected to the igniter mounting plate 60.
Specifically, the igniter mounting plate 60 is formed as a plate that is fitted to the cross-section of the nozzle body 10, has a certain thickness, is fixed in the nozzle body 10, and divides the interior space of the nozzle body 10 into a fuel chamber 101 and a mixing chamber 102, which communicate with each other through a through hole in the igniter mounting plate 60.
In the prior art, premixing is performed in the nozzle, and then ignition is performed outside the nozzle, so that the mode is easily influenced by external environment, and the ignition success rate is reduced.
Further, the first fuel pipe 20 and the second fuel pipe 30 are communicated with the fuel chamber 101, and the air inlet 50 is communicated with the mixing chamber, so that the fuel is ensured not to contact with the air before being sprayed out from the through holes on the igniter mounting plate 60, and the initial uniformity of the fuel during spraying is ensured.
Further, the first fuel pipe 20 is inserted into the nozzle body 10 and is connected with the igniter mounting plate 60 in a sealing manner, so as to form a first fuel cavity 1011;
the second fuel pipe 30 communicates with the space enclosed between the inner wall of the nozzle body 10, the igniter mounting plate 60 and the first fuel pipe 20 to form a second fuel cavity 1012.
The first fuel is capable of airflow stabilization in the first fuel cavity 1011 and the second fuel is capable of airflow stabilization in the second fuel cavity 1012.
Further, the first fuel pipe 20 is disposed on the central axis of the nozzle body 10, the igniter 40 is introduced into the igniter mounting plate 60, one end is located in the first fuel pipe 20, and the other end is located in the inner space of the nozzle body 10.
By arranging the igniter 40 at the center of the nozzle body 10 in this way, the igniter 40 can uniformly heat the fuel in the nozzle body 10, thereby ensuring the stability of combustion,
further, a first incident air hole 601 and a second incident air hole 602 are provided on the igniter mounting plate 60;
the first incident air hole 601 communicates the first fuel cavity 1011 with the blending cavity 102;
the second incident air hole 602 communicates the second fuel cavity 1012 with the blending cavity 102.
Specifically, the first incident air hole 601 is disposed on the projection area of the first fuel cavity 1011 on the igniter mounting plate 60, and may be a plurality of uniformly arranged circular small holes; other shapes may be provided.
While the second inlet air holes 602 are disposed in the projected area of the second fuel chamber 1012 on the igniter mounting plate 60, a plurality of uniformly disposed circular apertures may also be provided.
It should be noted that, when the first incident air hole 601 and the second incident air hole 602 are disposed, they can be disposed close to the inner wall of the nozzle body 10, by such arrangement, the fuel outlet is closer to the air inlet 50, so that the fuel can be mixed with air more quickly, the fuel is reduced to be impacted by air and too much gathered at the center of the nozzle body 10, and the mixing effect can be improved.
Further, the opening of the second air inlet 502 is provided as a radial chamfer opening.
After the high-pressure air enters the nozzle body 10 through the second air inlet 502, the air forms a rotational flow in the nozzle body 10 due to the arrangement of the radial inclined cut openings, so that on one hand, the air can be stirred for the mixing speed, on the other hand, the rotational flow effect can be achieved by replacing a cyclone arranged in the nozzle body 10 through the arrangement of the radial inclined cut openings, the equipment resources can be saved, and the maintenance cost is reduced.
Further, the chamfer angle of the radial chamfer opening is 45 ° or less, preferably 30 °, and the chamfer angle in this range can optimize the mixing effect of air and fuel.
Further, the first air inlet holes 501 and the second air inlet holes 502 are uniformly circumferentially arranged along the side wall of the nozzle body 10, so that air can enter the nozzle body 10 in an omnibearing manner, and a better blending effect is achieved.
Further, the second air inlet 502 is a key-shaped hole, which can further increase the area distribution of the air inlet, and fully utilize the limited air inlet space on the sidewall of the nozzle body 10.
Further, a mounting flange 70 is provided on the sidewall of the nozzle body 10, and the nozzle can be fixedly connected to the gas turbine by the mounting flange 70.
In summary, according to the scheme of the present utility model, the nozzle body 10 is provided with the first air inlet 501 and the second air inlet 502, the first air inlet 501 is disposed close to the fuel outlet, and meanwhile, the opening area of the first air inlet 501 is larger than that of the second air inlet 502, so that after the fuel is sprayed out, a large amount of air can be mixed with the fuel at the first time, the mixing effect is increased, the mixing efficiency is improved, and the combustion stability is ensured; meanwhile, the igniter 40 is arranged in the nozzle body 10, so that the igniter 40 is not easy to be influenced by external environmental factors, the gas turbine can be normally used when being restarted after being started and flameout or being ignited under severe working conditions, and the ignition success rate is improved.
The foregoing description is only of the preferred embodiments of the present application and is presented as a description of the principles of the technology being utilized. It will be appreciated by persons skilled in the art that the scope of the utility model referred to in this application is not limited to the specific combinations of features described above, but it is intended to cover other embodiments in which any combination of features described above or equivalents thereof is possible without departing from the spirit of the utility model. Such as the above-described features and technical features having similar functions (but not limited to) disclosed in the present application are replaced with each other.
It should be understood that, the sequence numbers of the steps in the summary and the embodiments of the present utility model do not necessarily mean the order of execution, and the execution order of the processes should be determined by the functions and the internal logic, and should not be construed as limiting the implementation process of the embodiments of the present utility model.
Claims (10)
1. A dual fuel integral igniter nozzle comprising:
the device comprises a nozzle body, a first fuel pipe, a second fuel pipe, an igniter and an air inlet, wherein the first fuel pipe, the second fuel pipe, the igniter and the air inlet are arranged on the nozzle body;
the air inlet comprises a first air inlet and a second air inlet, the first air inlet is arranged close to fuel outlets of the first fuel pipe and the second fuel pipe, and the second air inlet is arranged close to an ignition position of the igniter;
the opening area of the first air inlet hole is larger than that of the second air inlet hole;
the opening of the second air inlet hole is arranged as a radial chamfer opening.
2. A dual fuel integral igniter nozzle as defined in claim 1 wherein an igniter mounting plate is disposed within said nozzle body;
the igniter mounting plate separates the inner space of the nozzle body to form a fuel cavity and a blending cavity.
3. The dual fuel integral igniter nozzle of claim 2 wherein said igniter is disposed within said nozzle body in fixed connection with said igniter mounting plate.
4. The dual fuel integral igniter nozzle of claim 2, wherein said first and second fuel tubes are in communication with said fuel chamber and said air inlet is in communication with said blending chamber.
5. The dual fuel integral igniter nozzle of claim 4 wherein said first fuel tube is inserted into said nozzle body and sealingly connected to said igniter mounting plate to form a first fuel cavity;
the second fuel pipe is communicated with a space enclosed by the inner wall of the nozzle body, the igniter mounting plate and the first fuel pipe to form a second fuel cavity.
6. The dual fuel integral igniter nozzle of claim 2 wherein said first fuel tube is disposed on a central axis of said nozzle body, said igniter penetrating said igniter mounting plate with one end located within said first fuel tube and the other end located within an interior space of said nozzle body.
7. The dual fuel integrated igniter nozzle of claim 5 wherein a first and a second inlet vent are provided on the igniter mounting plate;
the first incident air hole is communicated with the first fuel cavity and the blending cavity;
the second incident air hole is communicated with the second fuel cavity and the blending cavity.
8. A dual fuel integral igniter nozzle as defined in claim 1 wherein said radial chamfer opening has a chamfer angle of 45 ° or less.
9. The dual fuel integral igniter nozzle of claim 1, wherein said second air inlet opening is provided as a keyed opening.
10. The dual fuel integral igniter nozzle of claim 1, wherein said first air inlet and said second air inlet are uniformly circumferentially disposed along a sidewall of said nozzle body, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321984764.XU CN220287505U (en) | 2023-07-27 | 2023-07-27 | Dual-fuel integrated igniter nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321984764.XU CN220287505U (en) | 2023-07-27 | 2023-07-27 | Dual-fuel integrated igniter nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220287505U true CN220287505U (en) | 2024-01-02 |
Family
ID=89326641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321984764.XU Active CN220287505U (en) | 2023-07-27 | 2023-07-27 | Dual-fuel integrated igniter nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220287505U (en) |
-
2023
- 2023-07-27 CN CN202321984764.XU patent/CN220287505U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant |