CN101784155B

CN101784155B - Plasma bipolar exciting electrode

Info

Publication number: CN101784155B
Application number: CN2009100210085A
Authority: CN
Inventors: 郝江南
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-01-21
Filing date: 2009-01-21
Publication date: 2012-05-02
Anticipated expiration: 2029-01-21
Also published as: CN101784155A

Abstract

The invention relates to a device in the fluid active control technical field, in particular to a plasma bipolar exciting electrode. The technical key points thereof include that the exciting electrode is composed of a conductive electrode core with good conductivity as well as an insulating base and an insulating layer with good insulating property, part region of the conductive electrode core is covered by the insulating layer from left to right, the coverage area is 10-99%, the part of the conductive electrode core covered by the top part of the insulating layer is formed into the cathode of the bipolar electrode, and the naked part is formed into the anode of the bipolar electrode. N groups of bipolar electrodes are arranged on the insulating base in parallel at certain interval, and high potential and low potential of a high frequency high voltage power supply are respectively connected with the bipolar electrodes at the first stage and the last stage, thus forming the plasma bipolar exciting electrode. The invention can improve exciting effect, efficiency and control of plasma to fluid.

Description

A kind of plasma bipolar exciting electrode

Technical field

The present invention relates to a kind of device of fluid active control technical field, particularly a kind of plasma bipolar exciting electrode.

Background technology

Plasma is the 4th kind of state that material exists, and 99% material exists with plasma state in the universe.Plasma also has the characteristics of fluid except having electrology characteristic.Exactly because plasma has the characteristic of electricity and fluid simultaneously; The research of in two fields of aerospace, using plasma to carry out mobile control of plasma or even plasma propelling is carried out on a large scale, and plasma is human breakover points on the Aero-Space cause.The experimental study stage ionic medium body of present stage has been applied to aspects such as wing drag reduction, the control of wing aerofoil underlying surface layer, the raising of aerofoil stalling angle, body of revolution FLOW CONTROL by success.General plasma exciter is made up of upper and lower electrode, and wherein top electrode is exposed in the air, and bottom electrode is insulated material and covers.When high-frequency high-voltage was loaded on upper and lower electrode, the air between the upper and lower utmost point was produced plasma by ionization.The plasma excitation device directly acts on fluid, produces plasma at atmospheric environment ionic medium exciter through ionized air, and through the direction motion according to the rules of driven plasma, has reached the purpose of drive air.In the outer space, the plasma exciter directly acts on the free plasma generation thrust in outer space.Along with the research of article on plasma body FLOW CONTROL deepens continuously, the research and development of people's article on plasma body exciter are more and more paid attention to, and have proposed para-electric excitation and two kinds of incentive modes of wriggling excitation.But these two kinds of energisation modes are all very limited for the arousal effect of fluid, and usefulness is low, the big plasma progress of research that restricted of equipment cost.

Summary of the invention

The purpose of this invention is to provide a kind of plasma bipolar exciting electrode, the new mode of utilization plasma bipolarity excitation uses the plasma bipolar exciting electrode can improve arousal effect and the usefulness of plasma for fluid.

The scheme that the present invention solves the prior art problem is: ambiplasma exciting electrode, and the bipolarity plasma exciter that can design according to its characteristic.Bipolar electrode is made up of electric conductivity favorable conductive electrode cores and insulation property good insulation performance base plate and top layer.The conductive electrode core is covered covering area range 10% to 99% in part zone from left to right by top layer.The part that the conductive electrode core is covered by top layer is formed the negative pole of bipolar electrode, and exposed part has been formed the positive pole of bipolar electrode.Conductive electrode core and top layer parallelization are on insulating base.For the chosen material of bipolar electrode, also can use the composite material that has insulation and electric conductivity simultaneously.Be laid in the bipolar electrode on the insulating base by N group according to parallel at certain interval, N >=2 wherein, the high potential of high-frequency and high-voltage power supply links to each other with the last grade bipolar electrode with the first order respectively with electronegative potential, has promptly formed the plasma bipolar exciter.

Operation principle of the present invention is: N level ambiplasma exciting electrode is arranged on the 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 the last grade electrode.When energized; Under operating frequency and voltage effect; Glow discharge produces between first utmost point and second utmost point; Air is produced plasma by ionization at this moment accordingly, and to second level motion, near the air in this process, driving has produced the control effect to air to plasma under the effect of voltage.Because isoionic electrology characteristic; Electric current is conducted to the negative pole of second utmost point by the positive pole of the first order; The negative pole of second utmost point and positive pole are inner conductings; This moment, there was voltage in the negative pole at the partial positive pole and the 3rd utmost point, and same discharge excitation process produces at the negative pole of the partial positive pole and the third level once more.Along with the generation of plasma and the propagation of electric current, same discharge excitation process is constantly carried out being dissipated to until electric weight and is lower than plasma exciatiaon voltage.Each time glow discharge is not only and is produced plasma and carry out the process to Atmospheric Flow control in this process, and its also is the process that energy is propagated simultaneously.

Compare with existing plasma excitation electrode; The effect of bipolarity plasma exciting electrode has obtained improving significantly; It has changed the electrode effect, single electrode has been had plasma and the effect of accepting energy take place, and isoionic electricity and fluid behaviour are given full play to and utilized to bipolar electrode; And in this process, owing to enlarged area and time of contact that plasma contacts with atmosphere, more effective energy is used for exciting of plasma and induced air.

Description of drawings

Fig. 1, for the structure construction sketch map of bipolar electrode of the present invention,

Fig. 2, bipolar electrode exciter schematic diagram for utilizing the present invention to realize,

Fig. 3, be exciter article on plasma of the present invention stream and air current control schematic diagram.

Among the figure 1, insulating base, 2, the conductive electrode core, 3, top layer, 4, high-frequency and high-voltage power supply; 5, first order bipolar electrode, 6, second level bipolar electrode, 7, third level bipolar electrode, 8, terminal bipolar electrode; 9, power line, 10, plasma, 11, air stream.

Specific embodiment

Embodiment 1, makes flat exciter with the ambiplasma exciting electrode, and is as shown in Figure 1, and bipolar electrode is made up of insulating base 1, conductive electrode core 2 and top layer 3.Insulating base 1 the selection of material is a glass plate, and thick is 12mm, the long 300mm of being, the wide 200mm of being; Conductive electrode core 2 the selection of materials are red copper, and thick is 0.03mm, the long 200mm of being, the wide 10mm of being; Conductive electrode core 2 is insulated layer from left to right and covers, and thick is 0.1mm, the wide 8mm of being, materials used is that pi covers.As shown in Figure 2, the ambiplasma exciter is made up of high-frequency and high-voltage power supply 4, the bipolar electrode first order 5, the second level 6, the third level 7, terminal bipolar electrode 8, power line 9.High-frequency and high-voltage power supply 4 is a high-frequency ac power, and its output frequency and voltage are adjustable.Be spaced apart experimental data between the bipolar electrode, be followed successively by Δ 1=10mm, Δ 2=9mm, Δ 3=8mm from left to right.Operation principle for bipolarity plasma exciter is as shown in Figure 3; Behind the exciter on-load voltage; Between the negative pole of the positive pole of the first order 5 and the second level 6, can produce aura and bring out plasma, the discharge channel after plasma forms between first and second utmost point has just formed, and arrives the negative pole of second utmost point along the discharge channel electric current; The negative pole of the second level 6 and positive pole are inner conductings, and electric current has arrived the positive pole of the second level 6.Between the second level 6 and the third level 7, form discharge channel equally again, electric current is accomplished exciting of plasma and conducting again.Induced plasma 9 through this process plasma exciter, electric current is constantly accomplished plasma exciatiaon and conducting are lower than plasma until voltage trigger voltage at electrode.Along with plasma excite near it air by ionization, plasma 9 drives the air 10 that is in contact with it and moves.

Embodiment 2, insulation of the present invention floor also can be set to certain radian, be non-flat board-like, operation principle with other be provided with the same.

Claims

1. plasma bipolar exciting electrode; Form by electric conductivity favorable conductive electrode cores (2) and insulation property good insulation performance base plate (1) and top layer (3); It is characterized in that: conductive electrode core (2) is covered by top layer (3) in part zone from left to right; Covering area range 10% to 99%; The part that conductive electrode core (2) is covered by top layer (3) is formed the negative pole of plasma bipolar exciting electrode; And exposed part has been formed the positive pole of plasma bipolar exciting electrode; The plasma bipolar exciting electrode that N group is laid on the insulating base (1) according to parallel at certain interval has promptly formed the plasma bipolar exciter, N >=2 wherein, and the high potential of high-frequency and high-voltage power supply (4) links to each other with the last grade plasma bipolar exciting electrode (8) with first order plasma bipolar exciting electrode (5) respectively with electronegative potential.

2. plasma bipolar exciting electrode according to claim 1 is characterized in that: high-frequency and high-voltage power supply (4) output frequency and voltage are adjustable.