CN119508853B - A dual-fuel annular vortex combustion chamber - Google Patents
A dual-fuel annular vortex combustion chamberInfo
- Publication number
- CN119508853B CN119508853B CN202411712732.3A CN202411712732A CN119508853B CN 119508853 B CN119508853 B CN 119508853B CN 202411712732 A CN202411712732 A CN 202411712732A CN 119508853 B CN119508853 B CN 119508853B
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- hydrogen
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- guide plate
- shaped
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/42—Continuous combustion chambers using liquid or gaseous fuel characterised by the arrangement or form of the flame tubes or combustion chambers
- F23R3/58—Cyclone or vortex type combustion chambers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/42—Continuous combustion chambers using liquid or gaseous fuel characterised by the arrangement or form of the flame tubes or combustion chambers
- F23R3/52—Toroidal combustion chambers
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Spray-Type Burners (AREA)
Abstract
The invention provides a dual-fuel annular vortex combustion chamber which comprises an annular structure formed by splicing a plurality of combustors, wherein each combustor comprises a hydrogen pipeline, a gas collecting box and a U-shaped flame tube, at least one hydrogen hole, at least one kerosene nozzle and at least one air hole are formed in the U-shaped flame tube, the gas collecting box is covered on the hydrogen hole, and the hydrogen pipeline is communicated with the hydrogen hole through the gas collecting box. The dual-fuel annular vortex combustion chamber provided by the invention can improve ignition performance, strengthen combustion at an ignition nozzle, further promote atomization of kerosene, be beneficial to improving combustion efficiency and stable flame flow, enable the kerosene to fully contact hydrogen gas, realize more uniform mixing of dual fuels, prevent backfire caused by returning flame, cool a guide plate, and improve ablation resistance and service life of high-temperature alloy of the guide plate.
Description
Technical Field
The invention relates to the technical field of engines, in particular to a dual-fuel annular vortex combustion chamber.
Background
The hydrogen fuel engine has the advantages as a novel flight power device, on one hand, the product of hydrogen combustion is only water vapor, zero carbon emission can be realized, and on the other hand, the hydrogen has the characteristics of large combustible range, low combustible limit, small ignition energy and the like, has the opportunity of realizing the application of wider range working conditions and higher power, and improves the thrust and efficiency of an aircraft. The scholars at home and abroad conduct more researches on the combustion of hydrocarbon fuel mixed hydrogen from two major aspects of basic theory and engineering design, wherein the basic theory mainly researches on the basic characteristics of flame propagation speed, pollutant emission, flame stability and the like of the mixed fuel of hydrogen doped with hydrocarbon fuel, lays a foundation for engineering application, and the engineering design aspect reforms based on the original traditional aviation kerosene combustion chamber according to the physical and combustion characteristics of hydrogen/mixed hydrogen fuel and creatively proposes a scheme of a pure hydrogen/mixed hydrogen micro-scale head combustion chamber according to the combustion characteristics of hydrogen.
An auxiliary power system (Auxiliary power unit, APU) is a key part of the aircraft power system, capable of independently providing electricity and compressed air, while a small number of APUs can provide additional thrust to the aircraft. On modern large and medium-sized airliners, an APU is the main equipment for ensuring the restarting of an engine after the engine is stopped in the air, and directly influences the flight safety. The core part of the engine is a small turbine engine, which is generally arranged in the tail cone of the last section of the engine body, the upper part of the engine body is provided with an air inlet near the vertical tail, and the exhaust gas is directly discharged from the air outlet at the rear end of the tail cone, so that strict requirements are imposed on the size of the engine. The annular vortex combustion chamber has a more compact structure, the engine shaft can be shortened by about 40%, and the annular vortex combustion chamber is almost universally used as a core combustor and has a development trend in the field of small engines.
The dual-fuel annular vortex combustion chamber in the prior art has the defects that hydrogen has higher flame propagation speed and smaller ignition energy, so that the hydrogen cannot normally work in the traditional combustion chamber to meet the requirements, the problems of tempering, high pollutant emission and the like are easily caused, the atomization performance of aviation kerosene is poor, and the mixing performance of kerosene, hydrogen and air in the combustion chamber needs to be improved.
Disclosure of Invention
The invention provides a dual-fuel annular vortex combustion chamber which is used for solving the defects of uneven mixing of hydrogen, kerosene and air, easy tempering, high pollutant emission and the like in the annular vortex combustion chamber in the prior art.
The invention provides a dual-fuel annular vortex combustion chamber which comprises an annular structure formed by splicing a plurality of combustors and is characterized by comprising a hydrogen pipeline, a gas collecting tank and a U-shaped flame tube, wherein at least one hydrogen hole, at least one kerosene nozzle and at least one air hole are formed in the U-shaped flame tube, the gas collecting tank is covered on the hydrogen hole, and the hydrogen pipeline is communicated with the hydrogen hole through the gas collecting tank.
According to the dual-fuel annular vortex combustion chamber, the U-shaped flame tube comprises an arc-shaped wall, an outer wall and an inner wall, wherein the outer wall and the inner wall are respectively connected to two end parts of the arc-shaped wall, and the hydrogen holes and the kerosene nozzle are arranged on the arc-shaped wall.
According to the dual fuel annular vortex combustion chamber, the air holes are one or more of impact holes, tangential holes and radial holes, wherein at least one impact hole is arranged on the outer wall, and at least one tangential hole and/or at least one radial hole is arranged on the arc-shaped wall.
According to the dual-fuel annular vortex combustion chamber, the arc-shaped wall is provided with the first guide plate and/or the second guide plate, the first guide plate is arranged on an air flow path entering the U-shaped flame tube through the tangential holes, and the second guide plate is arranged on an air flow path entering the U-shaped flame tube through the radial holes.
According to the dual-fuel annular vortex combustion chamber, the hydrogen holes are divided into at least two groups, and each group of hydrogen holes is arranged on the arc-shaped wall in at least one row or at least one column.
According to the dual-fuel annular vortex combustion chamber, the hydrogen holes are divided into a first group of hydrogen holes, a second group of hydrogen holes and a third group of hydrogen holes, the first group of hydrogen holes are transversely distributed on the arc-shaped wall, and the second group of hydrogen holes and the third group of hydrogen holes are longitudinally distributed on two sides of the first group of hydrogen holes.
According to the dual-fuel annular vortex combustion chamber, the arc-shaped wall is provided with the third guide plate, the fourth guide plate and the fifth guide plate, the third guide plate is arranged on a hydrogen flow path entering the U-shaped flame tube through the first group of hydrogen holes, the fourth guide plate is covered on a hydrogen flow path entering the U-shaped flame tube through the second group of hydrogen holes, and the fifth guide plate is covered on a hydrogen flow path entering the U-shaped flame tube through the third group of hydrogen holes.
According to the dual-fuel annular vortex combustion chamber, the third guide plate comprises a first guide plate and a first connecting plate, the first connecting plate is connected to the arc-shaped wall, the first guide plate is connected to the first connecting plate and is approximately parallel to the arc-shaped wall, the fourth guide plate comprises a second guide plate, a second connecting plate, a third connecting plate and a first blocking plate, the second connecting plate, the third connecting plate and the first blocking plate are connected to the arc-shaped wall, the second guide plate, the second connecting plate and the third connecting plate are combined to form a first U-shaped channel, the first blocking plate is blocked at the right end of the first U-shaped channel, the fifth guide plate comprises a third guide plate, a fourth connecting plate, a fifth connecting plate and a second blocking plate, the fourth connecting plate, the fifth connecting plate and the second blocking plate are connected to the arc-shaped wall, the third guide plate, the fourth connecting plate and the fifth connecting plate are combined to form a second U-shaped channel, and the first blocking plate is blocked at the left end of the second U-shaped channel.
According to the dual-fuel annular vortex combustion chamber, the arc-shaped wall is provided with the air small holes, and the air small holes are arranged at the downstream of a hydrogen flow path of the hydrogen holes.
According to the dual-fuel annular vortex combustion chamber, the air holes are divided into a first group of air holes, a second group of air holes and a third group of air holes, the first group of air holes are arranged on the downstream of a hydrogen flow path of the first group of hydrogen holes, the second group of air holes are arranged on the downstream of a hydrogen flow path of the second group of hydrogen holes, and the third group of air holes are arranged on the downstream of a hydrogen flow path of the third group of hydrogen holes.
The dual-fuel annular vortex combustion chamber provided by the invention can improve ignition performance, strengthen combustion at an ignition nozzle, further promote atomization of kerosene, be beneficial to improving combustion efficiency and stable flame flow, enable the kerosene to fully contact hydrogen gas to realize more uniform mixing of dual fuels, prevent backfire caused by flame returning, cool a guide plate, and improve ablation resistance and service life of high-temperature alloy of the guide plate.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a front view and a side view of a dual fuel orbiting scroll combustion chamber of the present invention.
FIG. 2 is a side view of a dual fuel orbiting scroll combustor single burner of the present invention.
FIG. 3 is a top view of a dual fuel orbiting scroll combustor single burner of the present invention.
Fig. 4 is a rear view of a dual fuel orbiting scroll combustor single burner of the present invention.
Fig. 5 is a front view of a single burner of the dual fuel orbiting scroll combustor of the present invention.
Fig. 6 is a cross-sectional perspective view in the direction A-A of fig. 5.
Fig. 7 is a cross-sectional perspective view in the direction B-B of fig. 5.
Fig. 8 is a perspective view of a single burner of the dual fuel orbiting scroll combustor of the present invention.
Fig. 9 is a partial enlarged view of a portion C in fig. 8.
Fig. 10 is a front view of a dual fuel annular vortex combustor U-shaped flame tube of the present invention.
FIG. 11 is a schematic diagram of the flow direction and mixing mode of hydrogen, kerosene and air in the U-shaped flame tube of the dual-fuel annular vortex combustion chamber.
Reference numerals:
The dual fuel annular vortex combustor 1, hydrogen pipe 2, gas collection box 3, kerosene nozzle 4, tangential holes 5, radial holes 6, air holes 7, impingement holes 8, first baffle 9, second baffle 10, third baffle 11, fourth baffle 12, fifth baffle 13, hydrogen holes 14, arcuate wall 15, outer wall 16, inner wall 17, first guide plate 111, second guide plate 122, third guide plate 132, first connection plate 112, second connection plate 121, third connection plate 123, fourth connection plate 131, fifth connection plate 133, first shutoff plate 124, second shutoff plate 134, first set of hydrogen holes 141, second set of hydrogen holes 142, third set of hydrogen holes 143, first set of air holes 71, second set of air holes 72, third set of air holes 73.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The dual fuel orbiting scroll combustor of the present invention is described below in conjunction with fig. 1-10.
The dual-fuel annular vortex combustion chamber 1 is formed by splicing a plurality of combustors into an annular structure, wherein a single combustor comprises a hydrogen pipeline 2, a gas collecting tank 3, an arc-shaped wall 15, an outer wall 16 and an inner wall 17, the arc-shaped wall 15, the outer wall 16 and the inner wall 17 jointly form a U-shaped flame tube, the outer wall 16 and the inner wall 17 are respectively connected to two end parts of the arc-shaped wall 15, a combustion cavity is arranged inside the U-shaped flame tube, an ignition nozzle (not shown in the figure) of an igniter is arranged in the combustion cavity, and a mixture of hydrogen, kerosene and air is ignited when passing through the ignition nozzle. The gas collecting tank 3 is arranged on one side of the middle part of the arc-shaped wall 15 far away from the combustion chamber, a plurality of hydrogen holes 14 are formed in the arc-shaped wall 15 of the part wrapped by the gas collecting tank 3, the hydrogen pipeline 2 is arranged on one side of the gas collecting tank 3 far away from the arc-shaped wall 15, the hydrogen pipeline 2 is communicated with the gas collecting tank 3, and hydrogen is conveyed to the gas collecting tank 3 through the hydrogen pipeline 2 and enters the combustion chamber through the hydrogen holes 14. The arc wall 15 is provided with a plurality of kerosene nozzles 4, and kerosene is atomized into the combustion chamber through the kerosene nozzles 4. The U-shaped flame tube is provided with air holes for conveying air into the combustion chamber.
In one embodiment, dual fuel annular vortex combustor 1 is a ring-shaped structure spliced by 18 combustors.
Referring to fig. 2 to 5, in one embodiment, the air holes are one or more of the impingement holes 8 on the outer wall 16, the tangential holes 5 and the radial holes 6 on the arc wall 15, the impingement holes 8 are formed near the center of the outer wall 16, the tangential holes 5 are formed at the middle upper part (front view direction) of the arc wall 15, the radial holes 6 are formed at the middle lower part of the arc wall 15, and the number of the impingement holes 8, the tangential holes 5 and the radial holes 6 on the single burner flame tube can be set to one or more so as to meet the air supply amount required for combustion. The holes are formed in a plurality of different positions of the flame tube, so that the air conveying quantity and the air mixing uniformity can be increased, and the combustion effect is improved.
In one embodiment, the side of the arc-shaped wall 15 adjacent to the combustion chamber is provided with a first deflector 9 and/or a second deflector 10. The first deflector 9 is arranged on an air flow path entering the combustion chamber through the tangential hole 5, the first deflector 9 is a long slat with an L-shaped section, and after the air enters the combustion chamber through the tangential hole 5, the air touches the first deflector 9 in the flowing process to change the flowing direction, and the flowing direction is changed from a vertical arc wall 15 to be upward along the tangent line of the arc wall 15, namely, flows to the vicinity of the impact hole 8. The second deflector 10 is arranged on the air flow path entering the combustion chamber through the radial holes 6, the second deflector 10 is a long slat with an L-shaped section, and after the air enters the combustion chamber through the radial holes 6, the second deflector 10 is touched in the flowing process to change the flowing direction, and the flowing direction is changed from the vertical arc wall 15 to be upward along the tangent line of the arc wall 15, namely, to flow to the vicinity of the hydrogen holes 14. The air entering the combustion chamber through the tangential holes 5 and/or the radial holes 6 changes the flow direction after passing through the first guide plate 9 and/or the second guide plate 10, automatically forms a central backflow area at the upstream of the combustion chamber of the flame tube, and then flows out through the outlet of the flame tube, thereby realizing the function of a cyclone, further saving the weight of the cyclone, having smaller pressure loss and compact structure.
In one embodiment, the hydrogen gas holes 14 are divided into a plurality of groups, and each group of hydrogen gas holes 14 is arranged on the arc-shaped wall 15 in a plurality of rows and columns in a transverse or longitudinal direction. The design can lead the hydrogen to be distributed more uniformly in the combustion chamber and be mixed with kerosene and air more fully.
Referring to fig. 6 to 10, in one embodiment, the hydrogen gas holes 14 are divided into 3 groups, the first group of hydrogen gas holes 141 are arranged in a lateral direction, and the second group of hydrogen gas holes 142 and the third group of hydrogen gas holes 143 are arranged in a longitudinal direction. A third deflector 11, a fourth deflector 12 and a fifth deflector 13 are also arranged on the side of the arc-shaped wall 15, which is close to the combustion chamber. The third baffle 11 includes a first guide plate 111 and a first connection plate 112, the first connection plate 112 being connected to the arc-shaped wall 15, the first guide plate 111 being connected to the first connection plate 112 at an angle, the first guide plate 111 being approximately parallel to the arc-shaped wall 15, the third baffle 11 being disposed in the vicinity of the first group of hydrogen holes 141 for changing the flow direction of the hydrogen gas fed into the combustion chamber through the first group of hydrogen holes 141 to an upward (direction in the drawing) flow. The fourth baffle 12 includes a second guide plate 122, a second connection plate 121, a third connection plate 123 and a first blocking plate 124, the fourth baffle 12 is covered at the outlet of the second group of hydrogen holes 142, the second connection plate 121, the third connection plate 123 and the first blocking plate 124 are connected to the arc wall 15, the second guide plate 122, the second connection plate 121 and the third connection plate 123 are combined into a first U-shaped channel, and the first blocking plate 124 is covered at the right end (direction in the drawing) of the first U-shaped channel, so that the flow direction of the hydrogen conveyed into the combustion chamber through the second group of hydrogen holes 142 is changed into leftward (direction in the drawing) flow. The fifth baffle 13 includes a third guide plate 132, a fourth connecting plate 131, a fifth connecting plate 133 and a second blocking plate 134, the fifth baffle 13 is covered at the outlet of the third group of hydrogen holes 143, the fourth connecting plate 131, the fifth connecting plate 133 and the second blocking plate 134 are connected to the arc wall 15, the third guide plate 132, the fourth connecting plate 131 and the fifth connecting plate 133 are combined into a second U-shaped channel, and the second blocking plate 134 is covered at the left end (direction in the drawing) of the second U-shaped channel, so that the flow direction of the hydrogen gas fed into the combustion chamber through the third group of hydrogen holes 143 is changed to flow rightward (direction in the drawing). Through the design, the hydrogen conveyed into the combustion chamber is divided into three groups and flows towards three directions, so that kerosene sprayed by any kerosene nozzle can be fully contacted with hydrogen gas, and uniform mixing of hydrogen, kerosene and air can be realized.
Further, the arc wall 15 is further provided with an air hole 7, and the air hole 7 is arranged at the downstream of the hydrogen flow path of the hydrogen hole 14, so that the premixing of hydrogen and air is realized, and the tempering prevention and the cooling of the guide plate can be realized.
Further, the air holes 7 are divided into three groups, and each group of air holes may be arranged in a plurality of rows and columns. The first group of air holes 71 is provided downstream of the hydrogen flow path of the first group of hydrogen holes 141, and the air supplied from the first group of air holes 71 is used for premixing with the hydrogen supplied from the first group of hydrogen holes 141 and flushing the third baffle 11 to cool it. The second set of air holes 72 is disposed downstream of the hydrogen flow path of the second set of hydrogen holes 142, and the air delivered by the second set of air holes 72 is used to premix the hydrogen delivered by the second set of hydrogen holes 142 and flush the fourth baffle 12 to cool it. The third group of air holes 73 is arranged downstream of the hydrogen flow path of the third group of hydrogen holes 143, and the air supplied from the third group of air holes 73 is used for premixing with the hydrogen supplied from the third group of hydrogen holes 143 and flushing the fifth baffle 13 to cool it.
In one embodiment, the dual-fuel annular vortex combustor 1 is an annular structure formed by splicing 18 combustors, the outer diameter D1 of the dual-fuel annular vortex combustor 1 is 611.8714mm, the inner diameter D2 of the dual-fuel annular vortex combustor 1 is 520mm, the diameter of the impact hole 8 is 9mm, the diameter of the radial hole 6 is 6mm, the diameter of the tangential hole 5 is 6mm, the radius of the hydrogen holes 14 is 0.48mm, the interval between the hydrogen holes 14 is 3mm, the radius of the air holes 7 is 0.7mm, the interval between the air holes 7 is 2mm, the interval between the hydrogen holes 14 and the air holes 7 is 4mm, the interval between the outer wall 16 and the outer surface of the inner wall 17 is 44.9630mm, the wall thicknesses of the outer wall 16, the inner wall 17 and the arc wall 15 are 2mm, and the length in the axial direction of the U-shaped flame tube is 83.9033mm.
In summary, the technical scheme of the invention is that the dual-fuel annular vortex combustion chamber at least has the following technical effects that (1) one part of hydrogen is mixed with kerosene, and the other part of hydrogen flows to an igniter position along a backflow area together with air entering through radial holes and tangential holes in the same incoming flow direction through the guide plate and is ignited at the igniter position. The ignition environment is at normal temperature and pressure, hydrogen does not need to be atomized and has the inflammable characteristic, meanwhile, the flow direction of the hydrogen outflow air directly faces the ignition nozzle, the ignition performance is improved by directly acting on an initial ignition source, the ignition curve range is wider, on the other hand, the addition of the hydrogen strengthens the combustion at the ignition nozzle, further promotes the atomization of kerosene, and is beneficial to improving the combustion efficiency and stable flame flow. (2) The kerosene adopts a pressure atomizing nozzle, and hydrogen is uniformly released from the hydrogen holes. The kerosene and the hydrogen are alternately and evenly distributed along the annular vortex, the hydrogen is supplied to flow in through the small holes and flows out from two sides under the influence of the guide plate, so that the kerosene is sprayed out by any kerosene nozzle, and the hydrogen gas at two sides can be fully contacted. The hydrogen flows into the flame tube through the gas collecting tank and the pipeline, the flowing direction is changed by being blocked by the guide plate, the direction parallel to the transverse direction sprayed by the kerosene nozzle is changed into the longitudinal direction, and meanwhile, air enters the formed backflow through the impact hole above the flame tube, the radial hole in the flowing direction and the tangential hole, and is vertically mixed with the dual fuel. (3) And two rows of air small holes are evenly cut at adjacent positions downstream of the hydrogen holes along the flow direction of the hydrogen. The two rows of air holes continuously release air, flame is prevented from being transmitted back to the hydrogen holes to cause tempering, the air is continuously released and simultaneously scours the guide plate, the cooling effect is achieved to a certain extent, and the ablation resistance and the service life of the high-temperature alloy of the guide plate are improved laterally.
It should be noted that the above-mentioned embodiments are merely for illustrating the technical solution of the present invention, and not for limiting the same, and although the present invention has been described in detail with reference to the above-mentioned embodiments, it should be understood by those skilled in the art that the technical solution described in the above-mentioned embodiments may be modified or some technical features may be equivalently replaced, and these modifications or substitutions do not make the essence of the corresponding technical solution deviate from the spirit and scope of the technical solution of the embodiments of the present invention.
Claims (5)
1. The double-fuel annular vortex combustion chamber comprises an annular structure formed by splicing a plurality of combustors, and is characterized in that the combustors comprise a hydrogen pipeline, a gas collecting tank and a U-shaped flame tube, wherein at least one hydrogen hole, at least one kerosene nozzle and at least one air hole are formed in the U-shaped flame tube, the gas collecting tank is covered on the hydrogen hole, the hydrogen pipeline is communicated with the hydrogen hole through the gas collecting tank, the U-shaped flame tube comprises an arc-shaped wall, and the hydrogen hole and the kerosene nozzle are arranged on the arc-shaped wall;
the hydrogen holes are divided into at least two groups, and each group of hydrogen holes are arranged on the arc-shaped wall in at least one row or at least one column;
The hydrogen holes are divided into a first group of hydrogen holes, a second group of hydrogen holes and a third group of hydrogen holes, the first group of hydrogen holes are transversely arranged on the arc-shaped wall, and the second group of hydrogen holes and the third group of hydrogen holes are longitudinally arranged on two sides of the first group of hydrogen holes;
A third guide plate, a fourth guide plate and a fifth guide plate are arranged on the arc-shaped wall, the third guide plate is arranged on a hydrogen flow path entering the U-shaped flame tube through the first group of hydrogen holes, the fourth guide plate is covered on a hydrogen flow path entering the U-shaped flame tube through the second group of hydrogen holes, and the fifth guide plate is covered on a hydrogen flow path entering the U-shaped flame tube through the third group of hydrogen holes;
The third guide plate comprises a first guide plate and a first connecting plate, the first connecting plate is connected to the arc-shaped wall, the first guide plate is connected to the first connecting plate and is approximately parallel to the arc-shaped wall, the fourth guide plate comprises a second guide plate, a second connecting plate, a third connecting plate and a first blocking plate, the second connecting plate, the third connecting plate and the first blocking plate are connected to the arc-shaped wall, the second guide plate, the second connecting plate and the third connecting plate are combined to form a first U-shaped channel, the first blocking plate is blocked at the right end of the first U-shaped channel, the fifth guide plate comprises a third guide plate, a fourth connecting plate, a fifth connecting plate and a second blocking plate, the fourth connecting plate, the fifth connecting plate and the second blocking plate are connected to the arc-shaped wall, the third guide plate, the fourth connecting plate and the fifth connecting plate are combined to form a second U-shaped channel, and the second blocking plate is blocked at the left end of the second U-shaped channel;
The arc wall is provided with an air small hole, and the air small hole is arranged at the downstream of the hydrogen flow path of the hydrogen hole.
2. The dual fuel orbiting scroll combustor as recited in claim 1, wherein said U-shaped flame tube includes an outer wall and an inner wall, said outer wall and said inner wall being connected to respective ends of said arcuate wall.
3. The dual fuel orbiting scroll combustor as set forth in claim 2 wherein said air holes are one or more of impingement holes, tangential holes and radial holes, wherein at least one of said impingement holes is provided on said outer wall and at least one of said tangential holes and/or at least one of said radial holes is provided on said arcuate wall.
4. A dual fuel annular vortex combustor according to claim 3 wherein a first deflector and/or a second deflector is provided on the arcuate wall, the first deflector being provided on the air flow path through the tangential apertures into the U-shaped flame tube and the second deflector being provided on the air flow path through the radial apertures into the U-shaped flame tube.
5. The dual fuel annular vortex combustor of claim 1 wherein the air orifices are divided into a first set of air orifices disposed downstream of the hydrogen flow path of the first set of hydrogen orifices, a second set of air orifices disposed downstream of the hydrogen flow path of the second set of hydrogen orifices, and a third set of air orifices disposed downstream of the hydrogen flow path of the third set of hydrogen orifices.
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| CN202411712732.3A CN119508853B (en) | 2024-11-27 | 2024-11-27 | A dual-fuel annular vortex combustion chamber |
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| CN202411712732.3A CN119508853B (en) | 2024-11-27 | 2024-11-27 | A dual-fuel annular vortex combustion chamber |
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| CN119508853A CN119508853A (en) | 2025-02-25 |
| CN119508853B true CN119508853B (en) | 2025-09-19 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116123563A (en) * | 2023-02-27 | 2023-05-16 | 中国航发湖南动力机械研究所 | A hydrogen fuel nozzle and combustion chamber |
| CN117419360A (en) * | 2023-10-24 | 2024-01-19 | 北京航空航天大学 | Cross-flame annular vortex precombustion chamber and aeroengine thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2449267A (en) * | 2007-05-15 | 2008-11-19 | Alstom Technology Ltd | Cool diffusion flame combustion |
| EP2522912B1 (en) * | 2011-05-11 | 2019-03-27 | Ansaldo Energia Switzerland AG | Flow straightener and mixer |
| CN113701195A (en) * | 2021-09-03 | 2021-11-26 | 永旭腾风新能源动力科技（北京）有限公司 | Dual-fuel-tube combustion chamber and gas turbine |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116123563A (en) * | 2023-02-27 | 2023-05-16 | 中国航发湖南动力机械研究所 | A hydrogen fuel nozzle and combustion chamber |
| CN117419360A (en) * | 2023-10-24 | 2024-01-19 | 北京航空航天大学 | Cross-flame annular vortex precombustion chamber and aeroengine thereof |
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| CN119508853A (en) | 2025-02-25 |
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