CN110062517A - Plasma generator for simulating black barrier phenomenon - Google Patents
Plasma generator for simulating black barrier phenomenon Download PDFInfo
- Publication number
- CN110062517A CN110062517A CN201910358171.4A CN201910358171A CN110062517A CN 110062517 A CN110062517 A CN 110062517A CN 201910358171 A CN201910358171 A CN 201910358171A CN 110062517 A CN110062517 A CN 110062517A
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- Prior art keywords
- discharging chamber
- discharge electrode
- plasma generator
- air pressure
- black barrier
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
- H05H1/46—Generating plasma using applied electromagnetic fields, e.g. high frequency or microwave energy
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Electromagnetism (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Plasma Technology (AREA)
Abstract
The invention discloses a kind of plasma generator for simulating black barrier phenomenon, including discharging chamber, the intracorporal discharge electrode of discharge cavity, the hermatic door for sealing discharging chamber are set, vacuumize and Measurement System of Air Pressure and plasma concentration detecting instrument on the outside of cavity and with what is be connected in cavity；Discharge electrode is connected with the power supply on the outside of discharging chamber；Discharge electrode is helix setting.Discharge electrode includes that at least two parallel round loop electrode parallel connections form tubuloses, the plasma generator realize generate large area on ground, long lasting for, continuous controllable, the electrodeless plasmasphere blocked of density to carry out relevant experiment of electromagnetism environment on ground.
Description
Technical field
The present invention relates to plasma generators, are related to a kind of plasma generator for simulating black barrier phenomenon.
Background technique
When all kinds of recoverable spacecrafts enter atmosphere, spacecraft is coated on because air ionization will form a large amount of plasmas
Surface briefly shielded signal, generation " black barrier " phenomenon, this problem can annoying researcher all over the world so far
?.
In recent years, " black barrier " phenomenon becomes the hot spot of scientific research again with the continuous development of China's aerospace industry.But
It is carry the cost for flying experiment and its valuableness and condition is immature, has been become extremely so building corresponding ground experiment instrument
Urgent demand.
Summary of the invention
Goal of the invention: the object of the present invention is to provide a kind of plasma generator for simulating black barrier phenomenon, these etc.
Plasma generator, which is realized, generates large area, long lasting for continuous controllable, the electrodeless plasma blocked of, density on ground
Layer is to carry out relevant experiment of electromagnetism environment on ground.
Technical solution: the plasma generator of the present invention for simulating black barrier phenomenon, including discharging chamber, set
Set in the intracorporal discharge electrode of discharge cavity, the hermatic door for sealing discharging chamber, on the outside of cavity and be connected in cavity
Vacuumize and Measurement System of Air Pressure and plasma concentration detecting instrument；Discharge electrode is connected on the outside of discharging chamber
Power supply；Discharge electrode is helix setting.Discharge electrode includes the round loop electrode of at least two parallel connections.
By using above-mentioned technical proposal, after metal cavity is closed, taken out very by vacuumizing with Measurement System of Air Pressure
Sky simultaneously really measures intracavitary air pressure, and after meeting the low pressure of design requirement, which generates the high direct voltage of 7000V or more, mentions
Discharge electrode is supplied, forms strong electrical field between discharge electrode and discharging chamber wall surface, so that the gas ionization of electrode perimeter, generates
Plasma spread around, to form ion plasma；Plasma concentration detecting instrument probe in detecting discharge cavity is intracorporal etc.
Ion concentration simultaneously shows numerical value, can be intracorporal come adjusting cavity by adjusting the output voltage of high voltage power supply according to requirement of experiment
Plasma concentration.All annulus bottoms link together, and as high voltage power supply input terminal, discharge electrode is disposed in metal cavity
Inside remains certain gap between the two, is linked together between metal cavity and discharge electrode by insulation column.When
After inputting high voltage power supply, all round loop electrodes and metal cavity constitute discharge electrode, and the gas around round loop electrode is ionized,
Plasma slab is generated, multiple annulus are evenly arranged, it is ensured that generate the uniform and biggish ion plasma of diffusion area.
The utility model has the advantages that the present invention can generate large area, long lasting for continuous controllable, the electrodeless screening of, density on ground
The plasmasphere of gear；Plasma generator is discharged using intermediate frequency, and the radianting capacity of Mid Frequency is much weaker compared to radio band, even if
Cavity has the open design of large area is also unlikely strong radiation leakage occurs；Vacuum system effectively reduces external factor
Interference.
Detailed description of the invention
Fig. 1 is the schematic diagram for the plasma generator of simulating black barrier phenomenon；
Fig. 2 is power supply composition schematic diagram；
Fig. 3 is the structural schematic diagram of discharging chamber removal hermatic door；
Fig. 4 is to vacuumize and Measurement System of Air Pressure composition schematic diagram；
Fig. 5 is seal door structure schematic diagram.
Specific embodiment
As shown in Figure 1, a kind of plasma generator for simulating black barrier phenomenon, including discharging chamber 1, setting are being put
Discharge electrode 2 in electric cavity 1, the hermatic door 3 for sealing discharging chamber 1, positioned at the outside of discharging chamber 1 and with connect in cavity
Logical vacuumizes and Measurement System of Air Pressure 4 and plasma concentration detecting instrument 5；Discharge electrode 2 is connected with positioned at discharging chamber 1
The power supply 6 in outside；Discharge electrode 2 is helix setting, and discharge electrode 2 includes the round loop electrode of at least two parallel connections.
After metal cavity is closed, intracavitary air pressure is vacuumized and really measured with Measurement System of Air Pressure 4 by vacuumizing, when full
After the low pressure of sufficient design requirement, which generates the high direct voltage of 7000V or more, is supplied to discharge electrode 2, discharge electrode 2
Strong electrical field is formed between 1 wall surface of discharging chamber, so that the gas ionization of electrode perimeter, the plasma of generation is spread around,
To form ion plasma；5 probe 51 of plasma concentration detecting instrument detects the plasma concentration in discharging chamber 1 and shows number
Value can be by adjusting the output voltage of power supply 6 come the intracorporal plasma concentration of adjusting cavity according to requirement of experiment.All annulus
Bottom links together, and as 6 input terminal of high voltage power supply, discharge electrode 2 is disposed on the inside of metal cavity, keeps between the two
Certain gap, linked together between metal cavity and discharge electrode 2 by insulation column.After inputting high voltage power supply 6,
All round loop electrodes and metal cavity constitute discharge electrode 2, and the gas around round loop electrode is ionized, and generate plasma
Area, multiple annulus are evenly arranged, it is ensured that generate the uniform and biggish ion plasma of diffusion area.
With reference to Fig. 2, power supply 6 is using the intermediate frequency power supply 6 of the drive waveforms of symmetrical square wave, which includes prime
6 module of 6 module of AC-DC power supply and rear class 62DC-AC power supply.The frequency of intermediate frequency power supply 6 is far below the characteristic frequency of ion, can be with
It is all primary of short duration direct-current discharge in every half period, the alternation of current direction avoids the direct current polarization of electrode, due to
In every half period, electric discharge driving voltage will be stablized, and the switching time of commutation is also as short as possible, to avoid in commutation process
Electron density decline even plasma extinguishment, therefore the drive waveforms of symmetrical square wave are used here.
Intermediate frequency power supply 6 uses 62 Two Stages of prime AC-DC power module 61 and rear class DC-AC power module simultaneously
Scheme, wherein the adjusting of strength of discharge is completed by prime AC-DC power module 61, the duty ratio of rear class DC-AC power module 62
It can be fixed as 50% (dead time close to 0), meet the requirement quickly to commutate in this way.
As shown in Figures 3 and 5, discharging chamber 1 is made of round metal cylindrical chamber, and cylindrical discharging chamber 1 is in order to accommodate
Helix discharge electrode 2, and discharging chamber 1 makees the cathode of discharge electrode 2, and ground connection is provided on 1 lateral wall of discharging chamber and is visited
Needle 7.Cavity two sides are provided with switchable window, and window is glass material, to carry out optical diagnostics and visual observation, discharge cavity
It is reserved with the link slot for being inserted into partition on 1 inner wall of body, is inserted into partition purpose to obtain the plasmasphere of different-thickness.
As shown in figs. 1 and 4, vacuumize with Measurement System of Air Pressure 4 include intake valve 41, vacuum pump 42, thermal coupling vacuum meter 43,
Display instrument 44, programmable logic controller (PLC) 45；Setting value is arranged in programmable logic controller (PLC) 45, in discharging chamber 1
Thermal coupling vacuum meter 43 detects the air pressure in discharging chamber 1 and shows in display instrument 44, when 44 air pressure of display instrument is high
When setting value, programmable logic controller (PLC) 45 starts vacuum pump 42 and is evacuated, when 44 air pressure of display instrument is lower than setting value
When close vacuum pump 42, maintain current vacuum level；When needing quick boost air pressure, display instrument 44 starts intake valve 41, allows sky
Gas largely enters.
Plasma concentration detecting instrument 5 includes the probe 51 being inserted into discharging chamber 1 from 1 side wall of discharging chamber, probe
The insulating sleeve 8 for sealing is provided between 51 and discharging chamber 1.
Claims (6)
1. a kind of plasma generator for simulating black barrier phenomenon, including built in discharging chamber (1), discharging chamber (1)
And with discharging chamber (1) junction be the discharge electrode (2) of insulation processing, the hermatic door (3) for sealing discharging chamber (1),
It is vacuumized and Measurement System of Air Pressure (4) and plasma concentration detection on the outside of discharging chamber (1) and with what is be connected in cavity
Instrument (5)；Discharge electrode (2) is connected with the power supply (6) on the outside of discharging chamber (1)；It is characterized in that discharge electrode (2) is
Helix setting.
2. the plasma generator according to claim 1 for simulating black barrier phenomenon, it is characterised in that discharge electrode
(2) include at least two parallel connections round loop electrode.
3. the plasma generator according to claim 1 for simulating black barrier phenomenon, it is characterised in that power supply (6) is
Using the intermediate frequency DC power supply (6) of the drive waveforms of symmetrical square wave, which includes prime AC-DC power module
(61) and rear class DC-AC power module (62).
4. the plasma generator according to claim 1 for simulating black barrier phenomenon, it is characterised in that discharging chamber
(1) it is made of round metal cylindrical chamber, and discharging chamber (1) makees the cathode of discharge electrode (2), on discharging chamber (1) lateral wall
It is provided with grounded probe (7).
5. it is according to claim 1 for simulating black barrier phenomenon plasma generator, it is characterised in that vacuumize and
Measurement System of Air Pressure (4) includes intake valve (41), vacuum pump (42), thermal coupling vacuum meter (43), display instrument (44), may be programmed and patrol
It collects controller (45)；Setting value is arranged in programmable logic controller (PLC) (45), the thermal coupling vacuum meter (43) being located in discharging chamber (1)
It detects the air pressure in discharging chamber (1) and is shown on display instrument (44), when display instrument (44) air pressure is higher than setting
When value, programmable logic controller (PLC) (45) starting vacuum pump (42) is evacuated, when display instrument (44) air pressure is lower than setting value
When close vacuum pump (42), maintain current vacuum level；When needing quick boost air pressure, display instrument (44) starts intake valve
(41), air is allowed largely to enter.
6. the plasma generator according to claim 1 for simulating black barrier phenomenon, it is characterised in that plasma is dense
Degree detecting instrument (5) includes the probe (51) being inserted into discharging chamber (1) from discharging chamber (1) side wall, probe (51) and is put
The insulating sleeve (8) for sealing is provided between electric cavity (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910358171.4A CN110062517A (en) | 2019-04-30 | 2019-04-30 | Plasma generator for simulating black barrier phenomenon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910358171.4A CN110062517A (en) | 2019-04-30 | 2019-04-30 | Plasma generator for simulating black barrier phenomenon |
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| Publication Number | Publication Date |
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| CN110062517A true CN110062517A (en) | 2019-07-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910358171.4A Pending CN110062517A (en) | 2019-04-30 | 2019-04-30 | Plasma generator for simulating black barrier phenomenon |
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Citations (6)
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|---|---|---|---|---|
| WO2000008227A1 (en) * | 1998-07-31 | 2000-02-17 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Device and method for the vacuum plasma processing of objects |
| CN102781155A (en) * | 2012-07-23 | 2012-11-14 | 西安电子科技大学 | Large-area uniform high-density plasma generation system with cooled electrode |
| CN104768316A (en) * | 2015-04-21 | 2015-07-08 | 南京苏曼等离子科技有限公司 | Large-discharge-interval normal temperature glow discharge low-temperature plasma material processing device |
| CN106124868A (en) * | 2016-08-09 | 2016-11-16 | 南京苏曼等离子科技有限公司 | Propagation properties test device in a kind of low temperature plasma |
| CN108037173A (en) * | 2017-12-06 | 2018-05-15 | 上海无线电设备研究所 | A kind of test system and method for hypersonic two dimension plasma sheath |
| CN108630065A (en) * | 2018-05-15 | 2018-10-09 | 哈尔滨工业大学 | Pulsed magnetic field regulates and controls the experimental provision of spacecraft blackout range dissipation plasma by force |
-
2019
- 2019-04-30 CN CN201910358171.4A patent/CN110062517A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000008227A1 (en) * | 1998-07-31 | 2000-02-17 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Device and method for the vacuum plasma processing of objects |
| CN102781155A (en) * | 2012-07-23 | 2012-11-14 | 西安电子科技大学 | Large-area uniform high-density plasma generation system with cooled electrode |
| CN104768316A (en) * | 2015-04-21 | 2015-07-08 | 南京苏曼等离子科技有限公司 | Large-discharge-interval normal temperature glow discharge low-temperature plasma material processing device |
| CN106124868A (en) * | 2016-08-09 | 2016-11-16 | 南京苏曼等离子科技有限公司 | Propagation properties test device in a kind of low temperature plasma |
| CN108037173A (en) * | 2017-12-06 | 2018-05-15 | 上海无线电设备研究所 | A kind of test system and method for hypersonic two dimension plasma sheath |
| CN108630065A (en) * | 2018-05-15 | 2018-10-09 | 哈尔滨工业大学 | Pulsed magnetic field regulates and controls the experimental provision of spacecraft blackout range dissipation plasma by force |
Non-Patent Citations (2)
| Title |
|---|
| 付强新: "低气压辉光放电等离子体模拟与特性研究", 《中国优秀硕士学位论文全文数据库 基础科学辑》 * |
| 谢楷: "等离子体鞘套地面模拟技术及电波传播实验研究", 《中国博士学位论文全文数据库 工程科技II辑》 * |
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Application publication date: 20190726 |
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