CN104302085A - Non air contact type plasma bipolar exciting electrode and plasma exciter - Google Patents
Non air contact type plasma bipolar exciting electrode and plasma exciter Download PDFInfo
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- CN104302085A CN104302085A CN201410542527.7A CN201410542527A CN104302085A CN 104302085 A CN104302085 A CN 104302085A CN 201410542527 A CN201410542527 A CN 201410542527A CN 104302085 A CN104302085 A CN 104302085A
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Abstract
The invention relates to a non air contact type plasma bipolar exciting electrode and a plasma exciter. By utilization of the plasma exciter with the non air contact type plasma bipolar exciting electrode, reflection of radar waves from metal on the surface of the exciter can be eliminated, reflection of radar waves from metal on the surface of the bipolar plasma exciter, and the surface jet flow direction can correspondingly change after the direction of an electric field changes. Compared with an existing bipolar plasma exciting electrode, the function of the non air contact type plasma bipolar exciting electrode is improved to the great extent, and the electrode function is improved, so that the exciter changes the wall surface jet flow direction along with changes of the direction of the electric field, and hidden danger of reflection of radar waves from a bare electrode is eliminated.
Description
Technical field
The invention belongs to fluid active control device, relate to a kind of non-air contact type plasma body bipolar exciting electrode and plasma excitation device, there is the ability of absorbing radar wave.
Background technology
Plasma is the 4th kind of state that material exists, and in universe, the material of 99% exists with plasma state.Except having electrology characteristic, plasma also has the feature of fluid.Exactly because plasma has the characteristic of electricity and fluid simultaneously, the research of using plasma to carry out plasma flowing control or even Plasma propulsion in aerospace two fields is carried out on a large scale, and plasma is the breakover points of the mankind in Aero-Space cause.In the present experimental study stage, plasma has successfully been applied to wing drag reduction, aerofoil surface underlying surface layer controls, aerofoil stalling angle improve, body of revolution flowing control etc. in.
The electrode cores of ambiplasma exciter is divided into exposed positive pole and is formed by the negative pole that insulating barrier covers.Wherein negative pole received energy, positive pole emitted energy.This electrode exist this arousal effect obviously, control area scope is large, without oppositely putting the advantage such as a little.But its positive pole (emitter) metal for exposing, being subject to producing reflection when radar wave irradiates, affects its stealth effect when using on board the aircraft.In addition due to bipolar electrode is fixed and arranged, and its jet produced only has a direction, even if the direction changing electric field also can not make jet direction change, this also have impact on the performance of ambiplasma exciter effect.
Summary of the invention
The technical problem solved
In order to avoid the deficiencies in the prior art part, the present invention proposes a kind of non-air contact type plasma body bipolar exciting electrode and plasma excitation device, is that one does not need to use metallic conductor directly to contact plasma bipolar exciting electrode and exciter with air.
Technical scheme
A kind of non-air contact type plasma body bipolar exciting electrode, is characterized in that comprising conductive electrode core 2 and insulating barrier 1; Conductive electrode core 2 four periderm insulating barrier 1 covers parcel completely, and two ends are provided with as emitter and receiving pole.
The corner of described conductive electrode core 2 is that rounding off is in case occur point discharge phenomenon.
Described conductive electrode core 2 adopts pi cover material material.
The plasma excitation device adopting described non-air contact type plasma body bipolar exciting electrode to form, is characterized in that comprising multiple non-air contact type plasma body bipolar exciting electrode; The parallel distribution of multiple non-air contact type plasma body bipolar exciting electrode stratiform, is followed successively by first order bipolar exciting electrode to most end one-level bipolar exciting electrode.
1 ~ 10mm is spaced apart between the conductive electrode core of described two exciting electrodes.
During use, first order bipolar exciting electrode is connected with the high potential of high-frequency and high-voltage power supply, and most end one-level bipolar exciting electrode is connected with the electronegative potential of high-frequency and high-voltage power supply.
Beneficial effect
A kind of non-air contact type plasma body bipolar exciting electrode that the present invention proposes and plasma excitation device, use the plasma excitation device of non-air contact bipolar electrode can eliminate exciter surface metal for radar wave reflection, reduce ambiplasma exciter surface metal for radar wave reflection, the corresponding change after change direction of an electric field of the direction of surperficial jet can be made simultaneously.Compared with existing two-shipper plasma excitation electrode, the effect of non-air contact bipolarity plasma exciting electrodes obtains and improves significantly, which increase electrode effect, make exciter can change the direction of wall jet along with the direction change of electric field, and eliminate the hidden danger of bare electrode to reflection of radar wave.
Accompanying drawing explanation
Fig. 1: the structure chart of non-air contact type plasma body bipolar electrode;
Fig. 2: the structure chart of non-air contact type plasma body bipolar electrode exciter;
Fig. 3: non-air contact type plasma body bipolar electrode exciter operating diagram;
1, insulating base 2, conductive electrode core 3, high-frequency and high-voltage power supply 4, excitation high-frequency and high-voltage power supply 5 the 1st grade of bipolar electrode, 6 the 2nd grades of bipolar electrodes, 7 3rd level bipolar electrodes, 8 power lines.
Embodiment
Now in conjunction with the embodiments, the invention will be further described for accompanying drawing:
Non-air contact bipolar electrode is by the good insulating barrier of insulation property and the good conductive electrode core 2 of 1 electric conductivity and form.Conductive electrode core 2 is covered parcel completely by insulating barrier 1.
Conductive electrode core 2 horizontal distribution is arranged, emitter and receiving pole can be served as in its two ends, as shown in Figure 1.Conductive electrode core 2 is chosen and is led the strong material of superior performance oxidation resistance, and corner is that rounding off is in case occur point discharge phenomenon.Insulating barrier 1 material has high-insulativity, high temperature resistant and have higher anti-electrical breakdown.It is firm that the faying face of insulating material and metal material will be installed.
Arrange that shown in ambiplasma exciter Fig. 2 that bipolar electrode and high-frequency and high-voltage power supply form, the high potential of high-frequency and high-voltage power supply is connected with most end one-level bipolar electrode with the first order respectively with electronegative potential by organizing spaced horizontal more.
The course of work of bipolarity plasma excitation device is:
Wherein single group N level ambiplasma exciting electrode is arranged on insulating material according to specific parameter, and the live wire of high-frequency and high-voltage power supply and zero line put on the first order and most end first electrodes.Time when energized under suitable frequency and voltage, glow discharge produces between the first pole and the second pole, corresponding air is at this moment ionized generation plasma, plasma to second level motion, drives neighbouring air to create control effects to air in the process under the effect of voltage.Due to isoionic electrology characteristic, electric current conducts to the negative pole of the second pole by the positive pole of the first order, the negative pole of the second pole and positive pole are inner conductings, there is voltage in the negative pole of the positive pole now in the second level and the 3rd pole, the positive pole of same discharge excitation process again in the second level and the negative pole generation of the third level.Along with the generation of plasma and the propagation of electric current, same discharge excitation process is constantly carried out until electricity is dissipated to lower than plasma exciatiaon voltage.The process producing plasma and carry out controlling Atmospheric Flow is not only in glow discharge each time in the process, and it is also the process that energy carries out propagating simultaneously.Behind the direction changing electric field, said process can carry out according to the change direction of electric field.Simultaneously, battery lead plate applies one or more pulse frequency direct voltage, due to plasma conducts electricity effect, to battery lead plate downstream movement in the electric conductor that pulse voltage can be formed at plasma, like this can again electrode plate surface formed one comparatively continous-stable distribution plasmasphere, when being subject to radar wave and irradiating, incident wave is absorbed at plasmasphere.
Specific embodiment:
As shown in Figure 1, electrode is made up of insulator layer 1, conductive electrode core 2.Conductive electrode core 2 is that poly-+sub-acid amides covers, and the thickness of conductive electrode core 2 is 0.03mm, and its width is 20mm, grows for 200mm.1 ~ 10mm is spaced apart between non-air contact bipolar electrode.
As shown in Figure 2, non-air contact ambiplasma exciter is by high-pressure pulse direct current source 3, and high frequency and high voltage power supply 4, non-air contact bipolar electrode the 1st grade the 5,2nd grade 6,3rd level 7, the 4th grade 8 forms.High-pressure pulse direct current source 3, voltage and pulse frequency adjustable.High-frequency and high-voltage power supply 4, its output frequency and voltage adjustable.
For bipolarity plasma excitation device fundamental diagram as shown in Figure 3, when after exciter on-load voltage, aura can be produced and bring out plasma between the negative pole of the positive pole of the 1st grade 5 and the 2nd grade 6, when the discharge channel after plasma is formed between 1,2 poles just defines, the negative pole of the 2nd pole is arrived along discharge channel electric current, the negative pole of the 2nd grade and positive pole are inner conductings, and electric current reaches the positive pole of the 2nd grade.Form discharge channel equally again the 2nd, between 3 grade 6,7, electric current completes again exciting of plasma and conducting.Induced plasma 11 through this process plasma excitation device, electric current constantly completes plasma exciatiaon and conducting until voltage is lower than the trigger voltage of plasma at electrode.Along with the air near it that excites of plasma is ionized, plasma 11 drives the air 10 be in contact with it to move.After unlatching direct current pulse power source, be subject to the acceleration of extraneous electric fields, plasma accelerates there is motion downwards according to direction of an electric field, and wall jet is fine and close and more continuous, stable.
Claims (6)
1. a non-air contact type plasma body bipolar exciting electrode, is characterized in that comprising conductive electrode core (2) and insulating barrier (1); Conductive electrode core (2) four periderm insulating barrier (1) covers parcel completely, and two ends are provided with as emitter and receiving pole.
2. non-air contact type plasma body bipolar exciting electrode according to claim 1, is characterized in that: the corner of described conductive electrode core (2) is that rounding off is in case occur point discharge phenomenon.
3. non-air contact type plasma body bipolar exciting electrode according to claim 1, is characterized in that: described conductive electrode core (2) adopts pi cover material material.
4. adopt a plasma excitation device for non-air contact type plasma body bipolar exciting electrode composition described in claim 1 or 2 or 3, it is characterized in that comprising multiple non-air contact type plasma body bipolar exciting electrode; The parallel distribution of multiple non-air contact type plasma body bipolar exciting electrode stratiform, is followed successively by first order bipolar exciting electrode to most end one-level bipolar exciting electrode.
5. plasma excitation device according to claim 4, is characterized in that: be spaced apart 1 ~ 10mm between the conductive electrode core of described two exciting electrodes.
6. plasma excitation device according to claim 4, it is characterized in that: during use, first order bipolar exciting electrode is connected with the high potential of high-frequency and high-voltage power supply, and most end one-level bipolar exciting electrode is connected with the electronegative potential of high-frequency and high-voltage power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410542527.7A CN104302085A (en) | 2014-10-14 | 2014-10-14 | Non air contact type plasma bipolar exciting electrode and plasma exciter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410542527.7A CN104302085A (en) | 2014-10-14 | 2014-10-14 | Non air contact type plasma bipolar exciting electrode and plasma exciter |
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| CN104302085A true CN104302085A (en) | 2015-01-21 |
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| CN201410542527.7A Pending CN104302085A (en) | 2014-10-14 | 2014-10-14 | Non air contact type plasma bipolar exciting electrode and plasma exciter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108566718A (en) * | 2018-03-30 | 2018-09-21 | 西北工业大学 | A kind of high frequency plasma excitation device for flowing control |
| CN111511089A (en) * | 2020-06-17 | 2020-08-07 | 沈阳航空航天大学 | Method for realizing equipment stealth by using plasma jet |
-
2014
- 2014-10-14 CN CN201410542527.7A patent/CN104302085A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108566718A (en) * | 2018-03-30 | 2018-09-21 | 西北工业大学 | A kind of high frequency plasma excitation device for flowing control |
| CN111511089A (en) * | 2020-06-17 | 2020-08-07 | 沈阳航空航天大学 | Method for realizing equipment stealth by using plasma jet |
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Application publication date: 20150121 |
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