CN203879652U - Directional spinning plasma combustion-supporting system - Google Patents
Directional spinning plasma combustion-supporting system Download PDFInfo
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- CN203879652U CN203879652U CN201420198531.1U CN201420198531U CN203879652U CN 203879652 U CN203879652 U CN 203879652U CN 201420198531 U CN201420198531 U CN 201420198531U CN 203879652 U CN203879652 U CN 203879652U
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- Prior art keywords
- field electrode
- plasma
- combustion system
- low
- plasma assisted
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- 238000009987 spinning Methods 0.000 title abstract 2
- 238000002485 combustion reaction Methods 0.000 claims abstract description 49
- 239000007789 gas Substances 0.000 claims description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 239000000110 cooling liquid Substances 0.000 claims description 9
- 239000002737 fuel gas Substances 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 239000004642 Polyimide Substances 0.000 claims description 3
- 239000004809 Teflon Substances 0.000 claims description 3
- 229920006362 Teflon® Polymers 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 229920001721 polyimide Polymers 0.000 claims description 3
- 230000005284 excitation Effects 0.000 description 10
- 239000012530 fluid Substances 0.000 description 10
- 239000000446 fuel Substances 0.000 description 10
- 239000002245 particle Substances 0.000 description 10
- 238000010304 firing Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 230000035939 shock Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 238000001311 chemical methods and process Methods 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010494 dissociation reaction Methods 0.000 description 2
- 230000005593 dissociations Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 230000000644 propagated effect Effects 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 230000005281 excited state Effects 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
-
- 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
Abstract
The utility model relates to a directional spinning plasma combustion-supporting system, which comprises a hollow shell, a nanosecond pulse plasma power supply and a plasma exciter connected with the nanosecond pulse plasma power supply; the top end and the lower end of the hollow shell are respectively provided with a gas collecting device and a gas inlet; a combustion area and a premixing area are formed in the hollow shell from top to bottom; the plasma exciter and the nanosecond pulse plasma power supply are respectively arranged inside and outside the hollow shell; the gas inlet is communicated with the gas collecting device through the premixing area, the combustion area and the gas collecting device in sequence. The utility model provides a can promote combustion-supporting performance and the energy efficiency ratio directional spin plasma combustion-supporting system.
Description
Technical field
The utility model relates to a kind of Plasma Assisted Combustion system, relates in particular to a kind of directed spin Plasma Assisted Combustion system.
Technical background
The basic principle of Plasma Assisted Combustion is to utilize ignition performance and the combustion characteristic of the chemism raising fuel of the nonequilibrium plasma producing, its essence is the non clastic collision of high-energy electron and reactant molecule in plasma, making can increase or energy transfer and " deformation " in reactant molecule, cause molecular bond relax, rupture or be cracked into free radicals, a large amount of active atomics, group in discharge process, have been produced, thereby affect the chemical equilibrium of combustion system, the chemical dynamics process of accelerated combustion.
Using plasma igniting and combustion-supportingly have many benefits: plasma can not only rapid heating air-flow, but also can produce a large amount of chemically reactive substances, as the molecule in excited state and free radicals, can realize on a large scale and light a fire, reduce ignition lag, improve flame stability, widen Flammability limits and keep discharge of low NOx etc. simultaneously.In addition, plasma excitation does not have moving element, has the advantages such as simple and compact for structure, excitation parameters easily regulates, respond rapidly.In recent years, plasma igniting and combustion-supportingly become in the world a quite concerned research direction in applied basic research field.
At some severe cold areas, because of the rising of altitude, atmospheric pressure declines, and air density reduces gradually, easily makes diesel pressure booster Efficiency Decreasing, and diesel engine afterburning increases, and firing duration is long, smolders serious.Power character and the Economy of diesel engine significantly reduce, deterioration of emission.On the other hand, because of weather severe cold, machine oil viscosity is large, and starting resistance is large; Fuel oil viscosity is high, and quality of mixing gas mixture is poor; Compression temperature and pressure decreased, the difficulty of catching fire first; Internal storage battery chemical reaction is slow, and internal resistance increases, and terminal voltage declines, and starting torque reduces, the difficulty of catching fire.For aeroengine, when occurring to stop working in high-altitude, requirement can be lighted a fire again.Because the aerial oxygen content of height is low, pressure and temperature is low, simultaneously because gas compressor is in windmill condition, also cannot provide high-pressure air for firing chamber, these factors have all increased the difficulty of igniting, therefore the ignition performance for firing chamber has proposed very large challenge, needs to adopt firing mode more reliably.Plasma excitation igniting, combustion-supporting, improve the aspects such as combustion stability and efficiency, there is remarkable result, to improving aeroengine, diesel engine etc., in (low temperature, anoxic) startup stability and velocity of combustion etc. under mal-condition, play an important role and meaning.
Model utility content
In order to solve the above-mentioned technical problem existing in background technique, the utility model provides a kind of orientation spin Plasma Assisted Combustion system that promotes combustion-supporting performance and Energy Efficiency Ratio.
Technical solution of the present utility model is: the utility model provides a kind of directed spin Plasma Assisted Combustion system, it is characterized in that: described directed spin Plasma Assisted Combustion system comprises hollow casing, nanosecond pulse plasma electrical source and the Plasma Actuator being connected with nanosecond pulse plasma electrical source; The top of described hollow casing and low side are respectively arranged with gas collecting device and gas inlet; Described hollow casing inside forms zone of combustion and pre-confounding from top to bottom; It is inside and outside that described Plasma Actuator and nanosecond pulse plasma electrical source are separately positioned on hollow casing; Described gas inlet connects by pre-confounding, zone of combustion and gas collecting device successively.
Above-mentioned Plasma Actuator comprise high-field electrode, low-field electrode and be arranged on high-field electrode and low-field electrode between insulating medium, after described high-field electrode, insulating medium and low-field electrode superpose successively around being arranged on the inwall of hollow casing; Described high-field electrode and low-field electrode are connected with nanosecond pulse plasma electrical source respectively.
Above-mentioned high-field electrode and low-field electrode are all red copper electrode, the zinc-plated electrode of copper or stainless steel electrode.
The width of above-mentioned high-field electrode is 3-8mm; The width of described low-field electrode is 3-20mm; The thickness of described high-field electrode and low-field electrode is all 0.1-0.3mm; Discharging gap between described high-field electrode and low-field electrode is 0-0.2mm.
Above-mentioned insulating medium is by polyimide or the formed insulating medium of teflon.
The thickness of above-mentioned insulating medium is 0.3-0.5mm.
The output voltage of above-mentioned nanosecond pulse plasma electrical source is 0～40kV, and discharge frequency is 6～30kV, and the rise time is 20ns, and pulse width is 50ns, and CF center frequency is 22kHz, and pulse frequency is 10～2000Hz, and dutycycle is 10%～99%.
Above-mentioned directed spin Plasma Assisted Combustion system also comprises the water jacket that is sleeved on hollow casing outside.
The bottom of above-mentioned water jacket and top are respectively arranged with cooling liquid inlet and cooling liquid outlet; Described cooling liquid inlet connects by water jacket and cooling liquid outlet.
Above-mentioned gas import comprises fuel gas inlet and air inlet; Described fuel gas inlet and air inlet connect by pre-confounding, zone of combustion and gas collecting device respectively.
The utility model has the advantages that:
The utility model proposes a kind of directed spin Plasma Assisted Combustion system, when the living radical that utilizes combustion process to produce is combustion-supporting, can make full use of again the aerodynamic effect that plasma excitation produces, strengthen momentum and the energy interchange of plasma active particle and fuel gas molecule, promote combustion-supporting performance and Energy Efficiency Ratio.The utility model is based in nanosecond pulse discharge process, electronics obtains energy from electric field, with the collision of the neutral particle such as combustion gas molecule, cause exciting, the generation of the physical and chemical process such as ionization, be accompanied by transfer, the release of energy, and cause gas-heated by rotational excitation, vibrational excitation, dissociation, the approach such as compound, local compression is raise; Nanosecond pulse discharge produces directed spin, the shock wave of this directed spin is propagated in fuel fluid, to drive Particles Moving in fuel fluid, form air-operated drive, the disturbance induction fuel fluid of shock wave acutely flows and forms local vortex at electrode edge, promoted the blending of combustion chamber wall surface air-flow and main flow, fully increased the interaction of fuel fluid and plasma active particle, the speed and the efficiency that have increased the energy and momentum exchange between them, realized the lifting of combustion-supporting performance.
Accompanying drawing explanation
Fig. 1 is the structural representation of Plasma Assisted Combustion system provided by the utility model;
Wherein:
1-cooling water intake; 2-coolant outlet; 3-fuel gas inlet; 4-air inlet; The pre-confounding of 5-; 6-Plasma Actuator; 7-low-field electrode; 8-high-field electrode; 9-zone of combustion; 10-shell; 11-water jacket; 12-gas collector; 13-gas detector; 14-gas outlet.
Embodiment
The utility model provides a kind of directed spin Plasma Assisted Combustion system, and this orientation spin Plasma Assisted Combustion system comprises hollow casing, nanosecond pulse plasma electrical source and the Plasma Actuator being connected with nanosecond pulse plasma electrical source; The top of hollow casing and low side are respectively arranged with gas collecting device and gas inlet; Hollow casing inside forms zone of combustion and pre-confounding from top to bottom; It is inside and outside that Plasma Actuator and nanosecond pulse plasma electrical source are separately positioned on hollow casing; Gas inlet connects by pre-confounding, zone of combustion and gas collecting device successively.
Plasma Actuator comprise high-field electrode, low-field electrode and be arranged on high-field electrode and low-field electrode between insulating medium, after high-field electrode, insulating medium and low-field electrode superpose successively around being arranged on the inwall of hollow casing; High-field electrode and low-field electrode are connected with nanosecond pulse plasma electrical source respectively.
Directed spin Plasma Assisted Combustion system also comprises the water jacket that is sleeved on hollow casing outside, and cooling liquid for example water can be carried out cooling to hollow casing.
The utility model is based in nanosecond pulse discharge process, electronics obtains energy from electric field, with the collision of the neutral particle such as combustion gas molecule, cause exciting, the generation of the physical and chemical process such as ionization, be accompanied by transfer, the release of energy, and cause gas-heated by rotational excitation, vibrational excitation, dissociation, the approach such as compound, local compression is raise; Nanosecond pulse discharge produces directed spin, the shock wave of this directed spin is propagated in fuel fluid, to drive Particles Moving in fuel fluid, form air-operated drive, the disturbance induction fuel fluid of shock wave acutely flows and forms local vortex at electrode edge, promoted the blending of combustion chamber wall surface air-flow and main flow, fully increased the interaction of fuel fluid and plasma active particle, the speed and the efficiency that have increased the energy and momentum exchange between them, realized the lifting of combustion-supporting performance.
Specific works process of the present utility model is:
The utility model provides a kind of directed spin Plasma Assisted Combustion system, to solve the problem of severe cold areas diesel engine anoxic and other lean-burn conditions down-firing difficulties and combustion instability.The plasma excitation mode that the utility model adopts is that nanosecond pulse power supply excitation produces dielectric barrier discharge, and input energy is little, and the active particle concentration of generation is higher.
Referring to Fig. 1, fuel gas (CH
4, C
3h
8) and air-distribution from fuel gas inlet 3 and air inlet 4, enter system.
The design parameter of nanosecond pulse plasma electrical source:
Nanosecond pulse plasma electrical source, output voltage 0～40kV is adjustable, and discharge frequency 6～30kV is adjustable, rise time is 20ns, pulse width 50ns, CF center frequency 22kHz, pulse frequency 10～2000Hz is adjustable, and dutycycle 10%～99% is adjustable, mainly regulator, circuit generator, consists of.
The design parameter of Plasma Actuator 6: electrode material is red copper or copper is zinc-plated or stainless steel, high-field electrode 8 width 3-8mm, preferred 5mm, low-field electrode 7 width are 3-20mm, preferred 12mm, the thick 0.1-0.3mm of electrode, discharging gap 0-0.2mm, insulating medium (between low-field electrode 7 and high-field electrode 8) is polyimide or teflon, and thickness is 0.3-0.5mm.Spirality is wound in Inner Wall of Combustion Chamber.Can arrange according to demand the total length (being intensity) of actuator electrode.
Firing chamber 9 wall thickness: pottery or stainless steel, 1.4mm, length: 100cm.
Burning chamber shell 10 is provided with water jacket 11, and cooling water enters from cooling water intake 1, and coolant outlet 2 flows out, and this water jacket 11 is set on device and plays system radiating effect.
After the pre-abundant plasma of confounding 5, in system, produce a large amount of active particles, and formed directed spin fluid, by nozzle, enter zone of combustion 9, carry out ignition.Active particles a large amount of in system are as OH, and O etc., carry out sufficient energy interchange by spin and fuel fluid, make the activation of fuel gas height, burn more complete, and can reduce the pollution of partial combustion product.
Gaseous product after burning is through gas collector 12, and part is carried out composition detection analysis by gas detector 13, and all the other enter after reclaiming system is processed and discharge through gas outlet 14.
Claims (10)
1. a directed spin Plasma Assisted Combustion system, is characterized in that: described directed spin Plasma Assisted Combustion system comprises hollow casing, nanosecond pulse plasma electrical source and the Plasma Actuator being connected with nanosecond pulse plasma electrical source; The top of described hollow casing and low side are respectively arranged with gas collecting device and gas inlet; Described hollow casing inside forms zone of combustion and pre-confounding from top to bottom; It is inside and outside that described Plasma Actuator and nanosecond pulse plasma electrical source are separately positioned on hollow casing; Described gas inlet connects by pre-confounding, zone of combustion and gas collecting device successively.
2. directed spin Plasma Assisted Combustion system according to claim 1, it is characterized in that: described Plasma Actuator comprise high-field electrode, low-field electrode and be arranged on high-field electrode and low-field electrode between insulating medium, after described high-field electrode, insulating medium and low-field electrode superpose successively around being arranged on the inwall of hollow casing; Described high-field electrode and low-field electrode are connected with nanosecond pulse plasma electrical source respectively.
3. directed spin Plasma Assisted Combustion system according to claim 2, is characterized in that: described high-field electrode and low-field electrode are all red copper electrode, the zinc-plated electrode of copper or stainless steel electrode.
4. directed spin Plasma Assisted Combustion system according to claim 3, is characterized in that: the width of described high-field electrode is 3-8mm; The width of described low-field electrode is 3-20mm; The thickness of described high-field electrode and low-field electrode is all 0.1-0.3mm; Discharging gap between described high-field electrode and low-field electrode is 0-0.2mm.
5. directed spin Plasma Assisted Combustion system according to claim 4, is characterized in that: described insulating medium is by polyimide or the formed insulating medium of teflon.
6. directed spin Plasma Assisted Combustion system according to claim 5, is characterized in that: the thickness of described insulating medium is 0.3-0.5mm.
7. according to the orientation spin Plasma Assisted Combustion system described in the arbitrary claim of claim 1-6, it is characterized in that: the output voltage of described nanosecond pulse plasma electrical source is 0～40kV, discharge frequency is 6～30kV, rise time is 20ns, pulse width is 50ns, CF center frequency is 22kHz, and pulse frequency is 10～2000Hz, and dutycycle is 10%～99%.
8. directed spin Plasma Assisted Combustion system according to claim 7, is characterized in that: described directed spin Plasma Assisted Combustion system also comprises the water jacket that is sleeved on hollow casing outside.
9. directed spin Plasma Assisted Combustion system according to claim 8, is characterized in that: the bottom of described water jacket and top are respectively arranged with cooling liquid inlet and cooling liquid outlet; Described cooling liquid inlet connects by water jacket and cooling liquid outlet.
10. directed spin Plasma Assisted Combustion system according to claim 9, is characterized in that: described gas inlet comprises fuel gas inlet and air inlet; Described fuel gas inlet and air inlet connect by pre-confounding, zone of combustion and gas collecting device respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420198531.1U CN203879652U (en) | 2014-04-22 | 2014-04-22 | Directional spinning plasma combustion-supporting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420198531.1U CN203879652U (en) | 2014-04-22 | 2014-04-22 | Directional spinning plasma combustion-supporting system |
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| Publication Number | Publication Date |
|---|---|
| CN203879652U true CN203879652U (en) | 2014-10-15 |
Family
ID=51680156
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420198531.1U Expired - Lifetime CN203879652U (en) | 2014-04-22 | 2014-04-22 | Directional spinning plasma combustion-supporting system |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953474A (en) * | 2014-04-22 | 2014-07-30 | 中国科学院西安光学精密机械研究所 | Directional spinning plasma combustion-supporting system |
| CN107064410A (en) * | 2017-04-01 | 2017-08-18 | 华侨大学 | Static premix gas combustion limits extension test device under dielectric impedance plasma discharge |
| CN107477611A (en) * | 2017-07-20 | 2017-12-15 | 中国科学院工程热物理研究所 | Burner |
-
2014
- 2014-04-22 CN CN201420198531.1U patent/CN203879652U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953474A (en) * | 2014-04-22 | 2014-07-30 | 中国科学院西安光学精密机械研究所 | Directional spinning plasma combustion-supporting system |
| CN103953474B (en) * | 2014-04-22 | 2016-11-23 | 中国科学院西安光学精密机械研究所 | Directional spinning plasma combustion-supporting system |
| CN107064410A (en) * | 2017-04-01 | 2017-08-18 | 华侨大学 | Static premix gas combustion limits extension test device under dielectric impedance plasma discharge |
| CN107064410B (en) * | 2017-04-01 | 2019-04-09 | 华侨大学 | Static premix gas combustion limits extend test device under dielectric impedance plasma discharge |
| CN107477611A (en) * | 2017-07-20 | 2017-12-15 | 中国科学院工程热物理研究所 | Burner |
| CN107477611B (en) * | 2017-07-20 | 2019-08-09 | 中国科学院工程热物理研究所 | Burner |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |