CN103216317A - Supersonic combustion method actuated by combination plasma - Google Patents
Supersonic combustion method actuated by combination plasma Download PDFInfo
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- CN103216317A CN103216317A CN2013101316878A CN201310131687A CN103216317A CN 103216317 A CN103216317 A CN 103216317A CN 2013101316878 A CN2013101316878 A CN 2013101316878A CN 201310131687 A CN201310131687 A CN 201310131687A CN 103216317 A CN103216317 A CN 103216317A
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- 238000009841 combustion method Methods 0.000 title claims abstract description 20
- 238000002485 combustion reaction Methods 0.000 claims abstract description 22
- 230000005495 cold plasma Effects 0.000 claims abstract description 19
- 230000005284 excitation Effects 0.000 claims abstract description 15
- 239000000919 ceramic Substances 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 8
- 238000002604 ultrasonography Methods 0.000 claims description 23
- 239000000295 fuel oil Substances 0.000 claims description 10
- 239000012528 membrane Substances 0.000 claims description 10
- 239000007789 gas Substances 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 6
- 238000010891 electric arc Methods 0.000 claims description 6
- 229910052572 stoneware Inorganic materials 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 229910052786 argon Inorganic materials 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 3
- 239000000446 fuel Substances 0.000 abstract description 6
- 238000010304 firing Methods 0.000 description 9
- 230000004913 activation Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 239000010771 distillate fuel oil Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
组合等离子体激励下的超声速燃烧方法，它涉及一种发动机燃烧室超声速燃烧方法，以解决现有的凹腔式燃烧方法中凹腔尺度大，流动损失大、超声速燃烧性能低的问题。方法：一、各个通孔的内表面均镀有陶瓷膜；二、第一通孔与燃油输出管连接，第二通孔和第四通孔分别与热平衡等离子发生装置连接，第三通孔和第五通孔分别与非热平衡等离子发生装置连接；三、燃油由第一通孔注入到燃烧室中；四、工作介质由热平衡等离子发生装置喷出，注入到发动机燃烧室的燃烧区并点燃此处燃油形成扩散火焰，实现点火；五、射流冷等离子体由非热平衡等离子体发生装置喷出，经第三通孔和第五通孔注入到燃烧室的不同位置，来形成可靠的燃烧。本发明用于组织超声速燃烧。
A supersonic combustion method under combined plasma excitation relates to a supersonic combustion method in an engine combustion chamber to solve the problems of large cavity size, large flow loss and low supersonic combustion performance in the existing concave cavity combustion method. Method: 1. The inner surface of each through hole is coated with ceramic film; 2. The first through hole is connected to the fuel output pipe, the second through hole and the fourth through hole are respectively connected to the heat balance plasma generator, the third through hole and the The fifth through holes are respectively connected with the non-heat balance plasma generator; 3. The fuel is injected into the combustion chamber through the first through hole; 5. The jet cold plasma is ejected from the non-thermal balance plasma generating device, and injected into different positions of the combustion chamber through the third through hole and the fifth through hole to form reliable combustion. The invention is used for tissue supersonic combustion.
Description
Technical field
The present invention relates to a kind of engine chamber ultrasound velocity combustion method, be specifically related to a kind of ultrasound velocity combustion method that makes up under the plasma excitation.
Background technique
In the ultrasound velocity combustion technology, incoming flow flows with ultrasound velocity in the firing chamber, and the viscous flow time has only several milliseconds, so will realize the igniting of fuel and burn very difficult in the short time.
Cavity formula combustion method is a ultrasound velocity burning method for organizing commonly used at present.Pipeline by the cavity upper reaches is introduced fuel in the firing chamber, utilizes fuel to spread the burning that realizes in the high velocity air in the low speed whirlpool district in cavity.For the steady flame, require the cavity size bigger, make up the low speed whirlpool district of its large scale, be beneficial to inflammable gas and form stable hot flame in this zone enough time of stop.The flow losses that large scale whirlpool district in the supersonic speed combustion chamber in the cavity is brought are often bigger, reduced the performance of ultrasound velocity burning.Cavity flame often is close to wall simultaneously, increases the engine structure thermal force.
Summary of the invention
The objective of the invention is for solving in the existing cavity formula combustion method cavity yardstick greatlyyer, the problem that flow losses are big, the ultrasound velocity combustion performance is low proposes a kind of ultrasound velocity combustion method that makes up under the plasma excitation.
The inventive method realizes by following steps:
Step 1, process first through hole, second through hole, third through-hole, fourth hole and fifth hole from front to back successively on the wall thickness of engine chamber, the internal surface of first through hole, second through hole, third through-hole, fourth hole and fifth hole all is coated with ceramic membrane;
The input end of step 2, first through hole is connected with the fuel oil output tube, the input end of second through hole and fourth hole is connected with outlet on the thermal equilibrium plasma generator respectively, and the input end of third through-hole and fifth hole is connected with outlet on the thermal nonequilibrium plasma generator respectively;
Step 3, fuel oil are injected in the engine chamber by first through hole;
The present invention has the following advantages: one, utilize the high temperature of thermal equilibrium plasma, come the igniting of combustion gas in the inducing combustion chamber, have the advantages that ignition energy is low, ignition delay time is short, can realize the flame holding under the thermal equilibrium plasma excitation.Two, the thermal nonequilibrium jet plasma produces a large amount of chemical activation groups, forms combustive activation nuclear efficiently, can improve the efficient of ultrasound velocity burning.Three, certain variation can take place in flame structure under the different inlet flow conditions, according to needing and can injecting the thermal nonequilibrium jet plasma at the lower wall surface diverse location of firing chamber, with the combustion field in the control firing chamber, and then comes the organization ultrasonic quick burning to burn performance.Four, increased the passage that is coated with ceramic membrane among the present invention on the wall thickness of firing chamber, the outside plasma that produces in firing chamber imports in the firing chamber by this passage, has avoided the technical need at the indoor layout animating electrode of high-temp combustion.
Description of drawings
Fig. 1 is that (mark 6 is fuel oil stream among the figure for the structural representation of step 2 in the specific embodiment of the present invention one, 7 is the thermal equilibrium plasma jet, 8 is the nonthermal plasma jet), Fig. 2 is that (mark 2-3 is a high-temperature seal ring among the figure for the structural representation of thermal equilibrium plasma generator 2,2-4 is a Stainless Steel Tube, 2-5 is the outlet of thermal equilibrium plasma, 2-6 is the ceramic insulation packing ring, 2-7 is a ceramics insulator), Fig. 3 is that (mark 5 is the high voltage high-frequency power among the figure for the structural representation of thermal nonequilibrium plasma generator 3,3-1 is for stopping up, 3-2 is the high strength quartz tube, 3-3 is a Stainless Steel Tube, 3-4 is the outlet of thermal nonequilibrium plasma).
Embodiment
Embodiment one: in conjunction with Fig. 1～Fig. 3 present embodiment is described, present embodiment realizes by following steps:
Step 1, process the first through hole 1-1, the second through hole 1-2, third through-hole 1-3, fourth hole 1-4 and fifth hole 1-5 from front to back successively on the wall thickness of engine chamber 1, the internal surface of the first through hole 1-1, the second through hole 1-2, third through-hole 1-3, fourth hole 1-4 and fifth hole 1-5 all is coated with ceramic membrane;
The input end of step 2, the first through hole 1-1 is connected with fuel oil output tube 4, the input end of the second through hole 1-2 and fourth hole 1-4 is connected with outlet on the thermal equilibrium plasma generator 2 respectively, and the input end of third through-hole 1-3 and fifth hole 1-5 is connected with outlet on the thermal nonequilibrium plasma generator 3 respectively;
Step 3, fuel oil are injected in the engine chamber 1 by the first through hole 1-1;
Embodiment two: in conjunction with Fig. 1 present embodiment is described, present embodiment is that the thickness of the internal surface ceramic membrane of the first through hole 1-1, the second through hole 1-2, third through-hole 1-3, fourth hole 1-4 and fifth hole 1-5 in the step 1 is 0.1mm～0.2mm.Ceramic membrane has been realized the insulating effect between plasma and wall, and ceramic membrane can produce secondary emission under the collision of plasma, helps the stable propagation of plasma in through hole.Other step is identical with embodiment one.
Embodiment three: in conjunction with Fig. 1 present embodiment is described, present embodiment is that the thickness of the internal surface ceramic membrane of the first through hole 1-1, the second through hole 1-2, third through-hole 1-3, fourth hole 1-4 and fifth hole 1-5 in the step 1 is 0.15mm.Other step is identical with embodiment two.
Embodiment four: in conjunction with Fig. 1 present embodiment is described, present embodiment is that the mixed gas in the step 4 in the step 4 is oxygen and nitrogen, and the volume ratio of oxygen and nitrogen is 1: 4.Other step is identical with embodiment one.
Embodiment five: in conjunction with Fig. 1 present embodiment is described, present embodiment is that the supply voltage of the thermal equilibrium plasma in the step 4 is 1000V, and electric current is 50A.Other step is identical with embodiment one.
Embodiment six: in conjunction with Fig. 1 present embodiment is described, present embodiment is that the supply voltage of the thermal equilibrium plasma in the step 4 is 500V, and electric current is 100A.Other step is identical with embodiment one.
Embodiment seven: in conjunction with Fig. 1 present embodiment is described, present embodiment is that the supply voltage of the thermal equilibrium plasma in the step 4 is 500V, and electric current is 200A.Other step is identical with embodiment one.
Embodiment eight: in conjunction with Fig. 1 present embodiment is described, present embodiment is that the supply voltage of the cold plasma in the step 5 is 6500V, and power supply frequency is 50000Hz.Other step is identical with embodiment one.
Embodiment nine: in conjunction with Fig. 1 present embodiment is described, present embodiment is that the supply voltage of the cold plasma in the step 5 is 7500V, and power supply frequency is 40000Hz.Other step is identical with embodiment one.
Embodiment ten: in conjunction with Fig. 1 present embodiment is described, present embodiment is that the supply voltage of the cold plasma in the step 5 is 8500V, and power supply frequency is 50000Hz.Other step is identical with embodiment one.
Claims (10)
1. ultrasound velocity combustion method that makes up under the plasma excitation, it is characterized in that: described method realizes by following steps:
Step 1, process first through hole (1-1), second through hole (1-2), third through-hole (1-3), fourth hole (1-4) and fifth hole (1-5) from front to back successively on the wall thickness of engine chamber (1), the internal surface of first through hole (1-1), second through hole (1-2), third through-hole (1-3), fourth hole (1-4) and fifth hole (1-5) all is coated with ceramic membrane;
The input end of step 2, first through hole (1-1) is connected with fuel oil output tube (4), the input end of second through hole (1-2) and fourth hole (1-4) is connected with outlet on the thermal equilibrium plasma generator (2) respectively, and the input end of third through-hole (1-3) and fifth hole (1-5) is connected with outlet on the thermal nonequilibrium plasma generator (3) respectively;
Step 3, fuel oil are injected in the engine chamber (1) by first through hole (1-1);
Step 4, needle-like electrodes (2-1) in the thermal equilibrium plasma generator (2) connects dc power anode (9), the sidewall of thermal equilibrium plasma generator (2) connects dc power cathode (10), two sidewall cusps on the madial wall of the electrode pinnacle of needle-like electrodes (2-1) and thermal equilibrium plasma generator (2) form arc discharge passage (2-2), mixed gas forms the elevated temperature heat plasma during by arc discharge passage (2-2) and is sprayed by thermal equilibrium plasma generator (2), be injected into generation jet type plasma (7) in the engine chamber (1) through second through hole (1-2) and fourth hole (1-4), produce the fuel oil in jet type plasma (7) the ignition combustion chamber, form the combustion flame that one continues, wherein, the supply voltage of thermal equilibrium plasma is 500V～1000V, and electric current is 50A～200A;
Step 5, stoneware pipe (3-2) in the nonthermal plasma generating means (3) connects high-frequency and high-voltage power supply (5), nonthermal plasma generating means (3) is receiving electrode not, form suspension electrode, argon gas injects nonthermal plasma generating means (3) by stoneware pipe (3-2) and side opening (3-5), under the high-frequency high-voltage source forcing, produce jet type cold plasma (8), jet type cold plasma (8) is sprayed by nonthermal plasma generating means (3), be injected into diverse location in the engine chamber (1) through third through-hole (1-3) and fifth hole (1-5), form reliable burning, wherein, the supply voltage of nonequilibrium plasma is 5000V～10000V, and power supply frequency is 30000Hz～50000Hz.
2. according to the ultrasound velocity combustion method under the described combination plasma excitation of claim 1, it is characterized in that: the thickness of the internal surface ceramic membrane of first through hole (1-1) in the described step 1, second through hole (1-2), third through-hole (1-3), fourth hole (1-4) and fifth hole (1-5) is 0.1mm～0.2mm.
3. according to the ultrasound velocity combustion method under the described combination plasma excitation of claim 2, it is characterized in that: the thickness of the internal surface ceramic membrane of first through hole (1-1) in the described step 1, second through hole (1-2), third through-hole (1-3), fourth hole (1-4) and fifth hole (1-5) is 0.15mm.
4. according to the ultrasound velocity combustion method under the described combination plasma excitation of claim 1, it is characterized in that: the mixed gas in the described step 4 is oxygen and nitrogen, and the volume ratio of oxygen and nitrogen is 1: 4.
5. according to the ultrasound velocity combustion method under the described combination plasma excitation of claim 1, it is characterized in that: the supply voltage of the thermal equilibrium plasma in the described step 4 is 1000V, and electric current is 50A.
6. according to the ultrasound velocity combustion method under the described combination plasma excitation of claim 1, it is characterized in that: the supply voltage of the thermal equilibrium plasma in the described step 4 is 500V, and electric current is 100A.
7. according to the ultrasound velocity combustion method under the described combination plasma excitation of claim 1, it is characterized in that: the supply voltage of the thermal equilibrium plasma in the described step 4 is 500V, and electric current is 200A.
8. according to the ultrasound velocity combustion method under the described combination plasma excitation of claim 1, it is characterized in that: the supply voltage of the cold plasma in the described step 5 is 6500V, and power supply frequency is 50000Hz.
9. according to the ultrasound velocity combustion method under the described combination plasma excitation of claim 1, it is characterized in that: the supply voltage of the cold plasma in the described step 5 is 7500V, and power supply frequency is 40000Hz.
10. according to the ultrasound velocity combustion method under the described combination plasma excitation of claim 1, it is characterized in that: the supply voltage of the cold plasma in the described step 5 is 8500V, and power supply frequency is 50000Hz.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103343983A (en) * | 2013-07-31 | 2013-10-09 | 哈尔滨工业大学 | Supersonic-speed stable combustion method based on strong magnetic field stable electric arc |
| CN103529719A (en) * | 2013-09-24 | 2014-01-22 | 中国科学院力学研究所 | Electric equipment control circuit applied to supersonic combustion test |
| CN107366928A (en) * | 2017-06-20 | 2017-11-21 | 中国人民解放军空军工程大学 | A kind of Plasma Assisted Combustion method of engine chamber |
| CN108104945A (en) * | 2017-05-16 | 2018-06-01 | 大连民族大学 | A kind of two-stroke internal combustion engine electrode assembly |
| CN109723577A (en) * | 2018-12-24 | 2019-05-07 | 中国人民解放军战略支援部队航天工程大学 | A plasma-based active control method for high-frequency combustion instability |
| CN114234239A (en) * | 2021-12-13 | 2022-03-25 | 哈尔滨工业大学 | A combustion system and method based on metal-based particles and microwave synergy |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103343983A (en) * | 2013-07-31 | 2013-10-09 | 哈尔滨工业大学 | Supersonic-speed stable combustion method based on strong magnetic field stable electric arc |
| CN103343983B (en) * | 2013-07-31 | 2014-12-24 | 哈尔滨工业大学 | Supersonic-speed stable combustion method based on strong magnetic field stable electric arc |
| CN103529719A (en) * | 2013-09-24 | 2014-01-22 | 中国科学院力学研究所 | Electric equipment control circuit applied to supersonic combustion test |
| CN103529719B (en) * | 2013-09-24 | 2016-05-04 | 中国科学院力学研究所 | A kind of electrical equipment control circuit that is applied to Supersonic combustion tests |
| CN108104945A (en) * | 2017-05-16 | 2018-06-01 | 大连民族大学 | A kind of two-stroke internal combustion engine electrode assembly |
| CN107366928A (en) * | 2017-06-20 | 2017-11-21 | 中国人民解放军空军工程大学 | A kind of Plasma Assisted Combustion method of engine chamber |
| CN107366928B (en) * | 2017-06-20 | 2019-07-16 | 中国人民解放军空军工程大学 | A kind of plasma combustion-supporting method of engine combustion chamber |
| CN109723577A (en) * | 2018-12-24 | 2019-05-07 | 中国人民解放军战略支援部队航天工程大学 | A plasma-based active control method for high-frequency combustion instability |
| CN109723577B (en) * | 2018-12-24 | 2020-04-24 | 中国人民解放军战略支援部队航天工程大学 | Plasma-based active control method for instability of high-frequency combustion |
| CN114234239A (en) * | 2021-12-13 | 2022-03-25 | 哈尔滨工业大学 | A combustion system and method based on metal-based particles and microwave synergy |
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Application publication date: 20130724 |