CN219735393U - Tree-shaped distribution oil injection rod structure for post-combustion chamber outdoor culvert - Google Patents
Tree-shaped distribution oil injection rod structure for post-combustion chamber outdoor culvert Download PDFInfo
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- CN219735393U CN219735393U CN202320167709.5U CN202320167709U CN219735393U CN 219735393 U CN219735393 U CN 219735393U CN 202320167709 U CN202320167709 U CN 202320167709U CN 219735393 U CN219735393 U CN 219735393U
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- Prior art keywords
- injection rod
- oil injection
- afterburner
- oil
- tree
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Links
- 238000002347 injection Methods 0.000 title claims abstract description 123
- 239000007924 injection Substances 0.000 title claims abstract description 123
- 238000002485 combustion reaction Methods 0.000 title abstract description 9
- 239000000446 fuel Substances 0.000 claims abstract description 36
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 8
- 239000001301 oxygen Substances 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000000889 atomisation Methods 0.000 abstract description 8
- 239000003381 stabilizer Substances 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 77
- 238000010586 diagram Methods 0.000 description 3
- 239000000295 fuel oil Substances 0.000 description 3
- 238000002679 ablation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Landscapes
- Nozzles For Spraying Of Liquid Fuel (AREA)
Abstract
The utility model provides a tree-shaped distribution oil injection rod structure for an afterburner outdoor culvert, which comprises an oil injection rod main body; a plurality of oil injection rod branches are distributed on the oil injection rod main body in a staggered manner, and nozzles are arranged on the plurality of oil injection rod branches; the nozzles are direct injection nozzles, and the injection direction of each nozzle is perpendicular to the corresponding oil injection rod branch. According to the utility model, on the premise of meeting the functions of the afterburner fuel injection rod, through the tree-shaped distribution structure and the nozzles with eight equally-arranged oxygen content in the afterburner, the fuel atomization track can cover more fan-shaped areas outside the afterburner, the occupied space of the atomized fuel field outside the afterburner is larger, the circumferential distribution of the concentration field after the fuel atomization before reaching the stabilizer is more uniform, the local rich oil and the local lean oil are avoided, and the combustion stability is improved as a whole.
Description
Technical Field
The utility model relates to a tree-shaped distribution oil injection rod structure for an afterburner outdoor culvert, belongs to the design technology of aeroengines, and particularly relates to a tree-shaped distribution oil injection rod structure for an afterburner outdoor culvert of a turbofan engine.
Background
The oil injection rod is used as a part of the afterburner fuel manifold assembly, so that good fuel concentration distribution in the afterburner is ensured in high-speed airflow, and higher combustion efficiency is achieved. After successful ignition, the afterburner increases with the fuel supply amount, and the fuel injected by the fuel injection rod and the high-speed air flow have shearing, crushing and atomizing effects, so that the atomized fuel enters a backflow area behind the stabilizer for combustion.
The conventional oil injection rod of the conventional afterburner adopts the combination of a through rod cylinder shape, and side injection and direct injection type nozzles in the fuel injection direction, and has the characteristic of rapid atomization, but in a larger afterburner space, the sector area of an afterburner outer culvert covered by the fuel injection track of the oil injection rod for externally-included oil supply is smaller, and the atomized fuel concentration fields have larger difference, as shown in fig. 5, so that local rich oil and local lean oil are caused, and further the afterburner has low combustion efficiency, and ablation and unstable combustion of afterburner parts are caused.
Disclosure of Invention
In order to solve the technical problems, the utility model provides a tree-shaped distribution oil injection rod structure for an afterburner outdoor culvert.
The utility model is realized by the following technical scheme.
The utility model provides a tree-shaped distribution oil injection rod structure for an afterburner outdoor culvert, which comprises an oil injection rod main body; a plurality of oil injection rod branches are distributed on the oil injection rod main body in a staggered manner, and nozzles are arranged on the plurality of oil injection rod branches; the nozzles are direct injection nozzles, and the injection direction of each nozzle is perpendicular to the corresponding oil injection rod branch.
The oil injection rod main body and the plurality of oil injection rod branches are made of bar materials.
The oil injection rod branches comprise a first oil injection rod branch, a second oil injection rod branch, a third oil injection rod branch and a fourth oil injection rod branch, and the first oil injection rod branch, the second oil injection rod branch, the third oil injection rod branch and the fourth oil injection rod branch are distributed on the oil injection rod main body in a staggered mode.
The oil injection rod main body is connected with the plurality of oil injection rod branches through welding.
And the oil injection rod main body is provided with a groove used for being welded on the stressing fuel main pipe.
The oil injection rod main body is arranged perpendicular to the axial direction of the engine and adopts a cylindrical structure.
The diameter of the nozzles was 0.5mm.
The flow passage area is divided into eight parts according to the oxygen content, and a plurality of nozzles are respectively positioned on the equal ring surface boundary lines corresponding to the branches of the oil injection rod.
The utility model has the beneficial effects that: on the premise of meeting the functions of the afterburner fuel injection rod, through the tree-shaped distribution structure and the nozzles with eight equal-partition arrangement of the oxygen content of the afterburner, the fuel atomization track can cover more fan-shaped areas of the outer culvert of the afterburner, the atomized fuel field has larger occupied space of the outer culvert of the afterburner and more uniform circumferential distribution of the concentration field after the fuel atomization before reaching the stabilizer, so that local rich oil and local lean oil are avoided, and the combustion stability is improved as a whole.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a side view of FIG. 1;
FIG. 3 is a cross-sectional view of FIG. 1;
FIG. 4 is a schematic view of the branching and nozzle of the present utility model;
FIG. 5 is a diagram of an atomization trace of a conventional through-rod cylindrical fuel injection rod in the background art;
FIG. 6 is a diagram of an atomization trace of the present utility model;
in the figure: 1-a fuel injection rod main body, 2-a first fuel injection rod branch, 3-a second fuel injection rod branch, 4-a third fuel injection rod branch and 5-a fourth fuel injection rod branch.
Description of the embodiments
The technical solution of the present utility model is further described below, but the scope of the claimed utility model is not limited to the above.
The tree-shaped distribution oil injection rod structure for the post-combustion chamber culvert comprises an oil injection rod main body 1, as shown in figures 1-3; a plurality of oil injection rod branches are distributed on the oil injection rod main body 1 in a staggered manner, and nozzles are arranged on the plurality of oil injection rod branches; the nozzles are direct injection nozzles, and the injection direction of each nozzle is perpendicular to the corresponding oil injection rod branch.
The oil injection rod main body 1 and the plurality of oil injection rod branches are made of bar materials.
The oil injection rod branches comprise a first oil injection rod branch 2, a second oil injection rod branch 3, a third oil injection rod branch 4 and a fourth oil injection rod branch 5, and the first oil injection rod branch 2, the second oil injection rod branch 3, the third oil injection rod branch 4 and the fourth oil injection rod branch 5 are distributed on the oil injection rod main body 1 in a staggered mode.
The oil injection rod main body 1 is connected with a plurality of oil injection rod branches through welding.
The oil injection rod main body 1 is provided with a groove used for being welded on a stress application fuel oil main pipe.
The oil injection rod main body 1 is arranged perpendicular to the axial direction of the engine and adopts a cylindrical structure.
The diameter of the nozzle is 0.5mm, and the nozzle can be adjusted according to actual working conditions.
The flow passage area is divided into eight parts according to the oxygen content, and a plurality of nozzles are respectively positioned on the equal ring surface boundary lines corresponding to the branches of the oil injection rod.
Specifically, the injection rod main body 1 plays a role in fixing four injection rod branches and supplying oil.
Specifically, the fuel oil is atomized by the action of the fuel oil sprayed by the direct injection nozzle and the high-speed air flow and uniformly distributed in the circumferential space.
Further, through fluid simulation calculation, oxygen content distribution on the section is obtained, the flow passage area is divided into eight parts according to the oxygen content, and the nozzle is positioned on the equal-ring-surface boundary line, as shown in fig. 4.
As shown in fig. 4, the wall thickness of the nozzle of the first oil injection rod branch 2 is 1.25mm, an included angle between the nozzle and the oil injection rod main body 1 is 30 degrees (the nozzle can be adjusted according to actual working conditions), the upper nozzle 1 is positioned between the 2 nd equal annular surface and the 3 rd equal annular surface and is mainly responsible for oil supply in the 2 nd equal annular surface area; the nozzle 2 is positioned in the middle of the 3 rd equal annular surface and is mainly responsible for oil supply of the 2 nd equal annular surface and the 3 rd equal annular surface area;
the wall thickness of the nozzle of the second oil injection rod branch 3 is 1mm, an included angle of the nozzle and the oil injection rod main body 1 is 45 degrees (the nozzle can be adjusted according to actual working conditions), the upper nozzle 3 is positioned in the middle of the 3 rd equal annular surface and is mainly responsible for oil supply of the 2 nd equal annular surface and the 3 rd equal annular surface. The nozzle 4 is positioned between the 3 rd equal annular surface and the 4 th equal annular surface and is mainly responsible for oil supply in the areas of the 3 rd equal annular surface and the 2 nd equal annular surface;
the wall thickness of the nozzle of the third oil injection rod branch 4 is 1mm, an included angle of the third oil injection rod branch with the oil injection rod main body 1 is 30 degrees (the third oil injection rod branch can be adjusted according to actual working conditions), and the upper nozzle 5 is positioned in the middle of the 4 th equal annular surface and is located on the upper side and mainly responsible for oil supply of the 4 th equal annular surface and the 3 rd equal annular surface. The nozzle 6 is positioned in the middle of the 4 th equal annular surface and is mainly responsible for oil supply in the areas of the 4 th equal annular surface and the 3 rd equal annular surface;
the wall thickness of the nozzle of the fourth oil injection rod branch 5 is 1mm, an included angle of the nozzle and the oil injection rod main body 1 is 45 degrees (the nozzle can be adjusted according to actual working conditions), and the upper nozzle 7 is positioned in the middle of the 4 th equal annular surface and is positioned below the middle of the 4 th equal annular surface and mainly responsible for oil supply of the 4 th equal annular surface and the 3 rd equal annular surface. The nozzle 8 is positioned between the 4 th equal annular surface and the 5 th equal annular surface and is mainly responsible for oil supply of the 5 th equal annular surface and the 4 th equal annular surface area.
In summary, the utility model achieves the purposes that the fuel atomization track can cover more fan-shaped areas of the culvert outside the afterburner, the occupied space of the atomized fuel field outside the afterburner is larger and the circumferential distribution of the concentration field of the atomized fuel before reaching the stabilizer is more uniform through the design of the fuel injection rod branches distributed in a tree shape and the nozzles with eight equal oxygen content of the afterburner, as shown in fig. 6.
Claims (8)
1. The utility model provides a tree-shaped distribution oil spout pole structure for afterburner outdoor culvert, includes oil spout pole main part (1), its characterized in that: a plurality of oil injection rod branches are distributed on the oil injection rod main body (1) in a staggered manner, and nozzles are arranged on the plurality of oil injection rod branches; the nozzles are direct injection nozzles, and the injection direction of each nozzle is perpendicular to the corresponding oil injection rod branch.
2. The tree-like distribution fuel injection lance structure for an afterburner culvert as set forth in claim 1 wherein: the oil injection rod main body (1) and the plurality of oil injection rod branches are made of bar materials.
3. The tree-like distribution fuel injection lance structure for an afterburner culvert as set forth in claim 1 wherein: the oil injection rod branches comprise a first oil injection rod branch (2), a second oil injection rod branch (3), a third oil injection rod branch (4) and a fourth oil injection rod branch (5), and the first oil injection rod branch (2), the second oil injection rod branch (3), the third oil injection rod branch (4) and the fourth oil injection rod branch (5) are distributed on the oil injection rod main body (1) in a staggered mode.
4. The tree-like distribution fuel injection lance structure for an afterburner culvert as set forth in claim 1 wherein: the oil injection rod main body (1) is connected with the plurality of oil injection rod branches through welding.
5. The tree-like distribution fuel injection lance structure for an afterburner culvert as set forth in claim 1 wherein: the oil injection rod main body (1) is provided with a groove used for being welded on the stressing fuel main pipe.
6. The tree-like distribution fuel injection lance structure for an afterburner culvert as set forth in claim 1 wherein: the oil injection rod main body (1) is arranged perpendicular to the axial direction of the engine and adopts a cylindrical structure.
7. The tree-like distribution fuel injection lance structure for an afterburner culvert as set forth in claim 1 wherein: the diameter of the nozzles was 0.5mm.
8. The tree-like distribution fuel injection lance structure for an afterburner culvert as set forth in claim 1 wherein: the flow passage area is divided into eight parts according to the oxygen content, and a plurality of nozzles are respectively positioned on the equal ring surface boundary lines corresponding to the branches of the oil injection rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320167709.5U CN219735393U (en) | 2023-02-09 | 2023-02-09 | Tree-shaped distribution oil injection rod structure for post-combustion chamber outdoor culvert |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320167709.5U CN219735393U (en) | 2023-02-09 | 2023-02-09 | Tree-shaped distribution oil injection rod structure for post-combustion chamber outdoor culvert |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219735393U true CN219735393U (en) | 2023-09-22 |
Family
ID=88056297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320167709.5U Active CN219735393U (en) | 2023-02-09 | 2023-02-09 | Tree-shaped distribution oil injection rod structure for post-combustion chamber outdoor culvert |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219735393U (en) |
-
2023
- 2023-02-09 CN CN202320167709.5U patent/CN219735393U/en active Active
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