CN213300149U - V-shaped flame stabilizer with turbulence structure capable of being premixed - Google Patents
V-shaped flame stabilizer with turbulence structure capable of being premixed Download PDFInfo
- Publication number
- CN213300149U CN213300149U CN202021196919.XU CN202021196919U CN213300149U CN 213300149 U CN213300149 U CN 213300149U CN 202021196919 U CN202021196919 U CN 202021196919U CN 213300149 U CN213300149 U CN 213300149U
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- flame stabilizer
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- shaped flame
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- 239000003381 stabilizer Substances 0.000 title claims abstract description 26
- 238000002156 mixing Methods 0.000 claims abstract description 38
- 239000007921 spray Substances 0.000 claims abstract description 11
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims abstract description 5
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 239000000446 fuel Substances 0.000 abstract description 18
- 238000002485 combustion reaction Methods 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 3
- 238000001704 evaporation Methods 0.000 abstract description 3
- 230000008020 evaporation Effects 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 abstract 6
- 239000000295 fuel oil Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 25
- 238000000889 atomisation Methods 0.000 description 2
- 239000013543 active substance Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000003416 augmentation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000007792 gaseous phase Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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Abstract
The utility model discloses a premixing V-shaped flame stabilizer with a turbulent flow structure, which comprises two flame stabilizing devices arranged in a V shape, wherein the flame stabilizing devices are sequentially provided with a central air inlet channel, a premixing cavity, a central air outlet channel and an air outlet which are sequentially communicated; and a main oil way oil spray rod is arranged on the outer side of the central air inlet channel, and the main oil way oil spray rod is communicated with the pre-mixing cavity through a main oil way oil outlet hole. The utility model discloses can improve high-temperature gas to fuel heating effect, be favorable to in the afterburning chamber fuel atomizing evaporation and with the mixing of air current, prolong the time of oil-gas mixture, further strengthen fuel oil atomizing and the even degree of oil-gas mixture, and then improve combustion efficiency.
Description
Technical Field
The utility model relates to a flame holder technical field, concretely relates to can mix V type flame holder who takes vortex structure in advance.
Background
The flame stabilizer is generally a bluff body obstacle, the oncoming flow flows to the trailing edge of the bluff body along the surface of the bluff body to generate boundary layer separation, and a wake vortex is generated due to viscosity to form a backflow region, and some local flow velocity in the backflow region is equal to or lower than the propagation velocity of turbulent flame, so that the flame stabilizer has the necessary condition of flame stabilization, and once an ignition source with enough power is used, the combustible mixed gas can be ignited. The high temperature combustion products are returned upstream through the recirculation zone to form a stable and continuous ignition source. The reflux zone plays the role of a heat reservoir, transfers heat and active substances for combustible mixed gas in the forms of turbulent heat transfer and heat exchange, and enables flame to be rapidly spread in the combustion chamber.
In a ground heavy-duty gas turbine, a combustion area is very large, so that the situation of insufficient combustion and low combustion efficiency in a local area is inevitable, the phenomenon is particularly at a part where a transition section of a combustion chamber of a ground gas turbine is connected with a flame tube, the gas speed in the area is low, but the combustion temperature and the combustion efficiency are low, in order to achieve a larger thrust-weight ratio, the temperature rise of a main combustion chamber is large, the temperature of gas in front of a turbine is obviously improved, the gas flow is large, the flow speed is high, the incoming flow temperature and the incoming flow speed entering a turbofan afterburner or a stamping afterburner are greatly improved, the incoming flow temperature is improved to be beneficial to the evaporation of the fuel, the penetration distance after the fuel is sprayed is shortened, the mixing capability is weakened, the flow speed is improved to further aggravate the adverse factors of the mixing of the fuel and air, and the retention time of the fuel in the combustion chamber is shortened after the incoming flow speed is, presenting greater difficulty in burning tissue. And the stabilizer and the oil supply pipe which work in high-temperature airflow need to be cooled, so that the flame stabilizer and the oil supply system are integrally designed to improve the working stability and reliability of the stabilizer. The design of the integrated flame stabilizer structure capable of solving the problems is the key to be solved by the thrust augmentation combustion chamber in the turbine thrust combined engine and the turbofan engine.
Disclosure of Invention
The utility model discloses the problem that will solve is: the V-shaped flame stabilizer with the turbulent flow structure can improve the heating effect of high-temperature gas on fuel, is favorable for atomization and evaporation of the fuel in the afterburner and mixing with air flow, prolongs the time of oil-gas mixing, further enhances the uniform degree of fuel atomization and oil-gas mixing, and further improves the combustion efficiency.
The utility model discloses a solve the technical scheme that above-mentioned problem provided and do: a pre-mixing V-shaped flame stabilizer with a turbulent flow structure comprises two flame stabilizing devices arranged in a V shape, wherein a central air inlet channel, a pre-mixing cavity, a central air outlet channel and an air outlet which are sequentially communicated are sequentially arranged on each flame stabilizing device; and a main oil way oil spray rod is arranged on the outer side of the central air inlet channel, and the main oil way oil spray rod is communicated with the pre-mixing cavity through a main oil way oil outlet hole.
Preferably, the flame stabilizing device is further provided with a wavy tail part close to the air outlet.
Preferably, the radius of the arc of the wave shape at the tail part of the wave shape is 20-60 mm, and the radius is gradually increased.
Preferably, the width of the central air inlet channel is 1/4-1/2 of the whole thickness of the V-shaped flame stabilizer, and the air injection angle at the air outlet is 30-60 degrees.
Preferably, the cross section of the pre-mixing cavity is trapezoidal, the width of the pre-mixing cavity accounts for 1/2-2/3 of the overall width of the V-shaped flame stabilizer, and the length of the pre-mixing cavity accounts for 1/8-1/4 of the overall length of the V-shaped flame stabilizer.
Compared with the prior art, the utility model has the advantages that: the utility model discloses a flame holder, inside its advantage lies in introducing the high temperature air current after the burning and gets into flame holder, get into pre-mixing chamber after slowing down in the passageway, main oil circuit fuel spray rod spouts the fuel into pre-mixing chamber after, come gaseous phase mixture and preheat the fuel with the high temperature, later high temperature mixes the gas outlet blowout by wave afterbody front end, in the backward flow district that the afterbody formed, the fuel comes gas further disturbance with the high temperature and mixes, again because spun air velocity is lower, the oil gas is longer in the disturbance mixing time of rear low-speed district, the fuel can further be heated and evaporate. This scheme can strengthen the mixing degree of gas in the afterburner greatly, so can realize stably catching fire reinforcing oil gas misce bene degree under less oil-gas ratio condition, and then improve afterburner's combustion efficiency.
Drawings
The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it.
Fig. 1 is a schematic perspective view of the present invention;
the attached drawings are marked as follows: 1-central air inlet channel, 2-main oil channel oil spray rod, 3-main oil channel oil outlet, 4-pre-mixing cavity, 5-central air outlet channel, 6-air outlet and 7-wave tail part
Detailed Description
The following detailed description will be made with reference to the accompanying drawings and examples, so that how to implement the technical means of the present invention to solve the technical problems and achieve the technical effects can be fully understood and implemented.
The specific embodiment of the utility model is shown in fig. 1, a premixed V-shaped flame stabilizer with a turbulent flow structure, which comprises two flame stabilizing devices arranged in a V shape, wherein the flame stabilizing devices are sequentially provided with a central air inlet channel 1, a pre-mixing cavity 4, a central air outlet channel 5 and an air outlet 6 which are sequentially communicated; and a main oil way oil spray rod is arranged on the outer side of the central air inlet channel, and the main oil way oil spray rod 2 is communicated with the pre-mixing cavity through a main oil way oil outlet hole 3.
Furthermore, a wavy tail part 7 is further arranged on the flame stabilizing device close to the air outlet.
Further, the radius of the wave-shaped arc of the wave-shaped tail part 7 is 20-60 mm, and the radius is gradually increased.
Furthermore, the width of the central air inlet channel 1 is 1/4-1/2 of the overall thickness of the V-shaped flame stabilizer, and the air injection angle at the air outlet 6 is 30-60 degrees.
Furthermore, the section of the pre-mixing cavity is trapezoidal, the width of the pre-mixing cavity accounts for 1/2-2/3 of the overall width of the V-shaped flame stabilizer, and the length of the pre-mixing cavity accounts for 1/8-1/4 of the overall length of the V-shaped flame stabilizer.
The utility model discloses a V type flame holder distributes in afterburning chamber along circumference annular, flame holder has central inlet channel 1, central inlet channel 1 divides both sides to get into V type flame holder both sides, the center department of flame holder both sides is provided with pre-mixing chamber 4, central inlet channel 1 extends to pre-mixing chamber 4 by flame holder head portion, outlet channel 5 is extended to the front end of flame holder wave afterbody 7 by pre-mixing chamber 4, main oil circuit oil spout pole 2 is located the central inlet channel 1 outside, pre-mixing chamber 4 is anterior, oil outlet and pre-mixing chamber 4 intercommunication, oil gas is after pre-mixing intracavity hybrid heating, spout backward with certain angle through outlet channel 5, come the vortex further mixing with high temperature behind the wave afterbody.
The utility model discloses a V type flame holder is whole similar with current V type flame holder appearance, its inner structure bilateral symmetry, high temperature comes gas to be located the premixing chamber 4 at flame holder both sides middle part by the 1 entering of central intake duct, and simultaneously, main oil circuit fuel spray rod 2 is with fuel from 3 blowout of main oil circuit oil outlet to premixing chamber 4 in, fuel mixes gas in premixing chamber 4 with the high temperature, preheat and strengthen the gas and the high temperature degree of mixing that comes gas to the fuel, then discharge with certain angle by gas outlet channel 5 through the gas outlet 6 of 7 front ends of wave afterbody, further come gas mixing with the high temperature in the recirculation zone of 7 formation of wave afterbody, strengthen the mixing of oil gas once more.
The foregoing is illustrative of the preferred embodiments of the present invention only, and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof is allowed to be changed. All changes which come within the scope of the independent claims of the invention are to be embraced within their scope.
Claims (5)
1. The utility model provides a V type flame holder of taking vortex structure can mix in advance which characterized in that: the flame stabilizer comprises two flame stabilizing devices arranged in a V shape, wherein a central air inlet channel, a pre-mixing cavity, a central air outlet channel and an air outlet which are sequentially communicated are sequentially arranged on the flame stabilizing devices; and a main oil way oil spray rod is arranged on the outer side of the central air inlet channel, and the main oil way oil spray rod is communicated with the pre-mixing cavity through a main oil way oil outlet hole.
2. The V-shaped flame stabilizer with the turbulent flow structure capable of being premixed as claimed in claim 1, wherein: and the flame stabilizing device is also provided with a wavy tail part close to the air outlet.
3. The V-shaped flame stabilizer with the turbulent flow structure capable of being premixed as claimed in claim 2, wherein: the radius of the arc of the wave at the tail of the wave is 20-60 mm, and the radius is gradually increased.
4. The V-shaped flame stabilizer with the turbulent flow structure capable of being premixed as claimed in claim 1, wherein: the width of the central air inlet channel is 1/4-1/2 of the whole thickness of the V-shaped flame stabilizer, and the air injection angle at the air outlet is 30-60 degrees.
5. The V-shaped flame stabilizer with the turbulent flow structure capable of being premixed as claimed in claim 1, wherein: the cross section of the pre-mixing cavity is trapezoidal, the width of the pre-mixing cavity accounts for 1/2-2/3 of the overall width of the V-shaped flame stabilizer, and the length of the pre-mixing cavity accounts for 1/8-1/4 of the overall length of the V-shaped flame stabilizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021196919.XU CN213300149U (en) | 2020-06-24 | 2020-06-24 | V-shaped flame stabilizer with turbulence structure capable of being premixed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021196919.XU CN213300149U (en) | 2020-06-24 | 2020-06-24 | V-shaped flame stabilizer with turbulence structure capable of being premixed |
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| Publication Number | Publication Date |
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| CN213300149U true CN213300149U (en) | 2021-05-28 |
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| CN202021196919.XU Expired - Fee Related CN213300149U (en) | 2020-06-24 | 2020-06-24 | V-shaped flame stabilizer with turbulence structure capable of being premixed |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113551261A (en) * | 2021-07-19 | 2021-10-26 | 南昌航空大学 | Wave V type flame stabilizer |
| CN113551259A (en) * | 2021-07-19 | 2021-10-26 | 南昌航空大学 | Wave-shaped middle-slit type V-shaped flame stabilizer with lobe partition plate |
| CN113551262A (en) * | 2021-07-19 | 2021-10-26 | 南昌航空大学 | Take extension board flame holder of crescent sand dune profile |
| CN113551260A (en) * | 2021-07-19 | 2021-10-26 | 南昌航空大学 | V-shaped flame stabilizer with flow guide holes |
| CN113566236A (en) * | 2021-07-19 | 2021-10-29 | 南昌航空大学 | Take vortex generator's wave trailing edge extension board flame holder |
| CN113701192A (en) * | 2021-09-01 | 2021-11-26 | 南昌航空大学 | Wave-shaped double-V-shaped flame stabilizer with sawteeth |
-
2020
- 2020-06-24 CN CN202021196919.XU patent/CN213300149U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113551261A (en) * | 2021-07-19 | 2021-10-26 | 南昌航空大学 | Wave V type flame stabilizer |
| CN113551259A (en) * | 2021-07-19 | 2021-10-26 | 南昌航空大学 | Wave-shaped middle-slit type V-shaped flame stabilizer with lobe partition plate |
| CN113551262A (en) * | 2021-07-19 | 2021-10-26 | 南昌航空大学 | Take extension board flame holder of crescent sand dune profile |
| CN113551260A (en) * | 2021-07-19 | 2021-10-26 | 南昌航空大学 | V-shaped flame stabilizer with flow guide holes |
| CN113566236A (en) * | 2021-07-19 | 2021-10-29 | 南昌航空大学 | Take vortex generator's wave trailing edge extension board flame holder |
| CN113566236B (en) * | 2021-07-19 | 2022-05-20 | 南昌航空大学 | Take vortex generator's wave trailing edge extension board flame holder |
| CN113551262B (en) * | 2021-07-19 | 2022-06-14 | 南昌航空大学 | Take extension board flame holder of crescent sand dune profile |
| CN113551261B (en) * | 2021-07-19 | 2022-06-14 | 南昌航空大学 | Wave V type flame stabilizer |
| CN113551259B (en) * | 2021-07-19 | 2022-09-30 | 南昌航空大学 | Wavy middle-slit type V-shaped flame stabilizer with lobe partition plate |
| CN113701192A (en) * | 2021-09-01 | 2021-11-26 | 南昌航空大学 | Wave-shaped double-V-shaped flame stabilizer with sawteeth |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210528 |