CN104661423B - A kind of atmos low-temperature plasma jet generator - Google Patents
A kind of atmos low-temperature plasma jet generator Download PDFInfo
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- CN104661423B CN104661423B CN201510067947.9A CN201510067947A CN104661423B CN 104661423 B CN104661423 B CN 104661423B CN 201510067947 A CN201510067947 A CN 201510067947A CN 104661423 B CN104661423 B CN 104661423B
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Abstract
A kind of atmos low-temperature plasma jet generator belongs to dielectric barrier discharge plasma technology field, it is characterized in that, electrode part is by connecing high-pressure side and be placed on the interior electrode in glass capillary, the earthing pole for being coaxially enclosed within outer glass pipe periphery is collectively constituted, casing part is from bottom to top by outer wall, electrode supporting covers and wiring fixed cover is formed by connecting jointly, plant-grid connection part is made up of the high-pressure stage plug and low pressure pole insertion for being embedded in wiring fixed cover upper surface, high-pressure stage plug is via being fixed on wiring fixed cover lower surface and electrode supporting puts the high pressure conductive block between end face and is wrapped on interior electrode the spring of the effect for playing conduction and is combined into, ground wire on external electrode is connected to ground wire via the wire casing in shell and wiring fixed cover and fixes end face, it is connected with earthing pole plug；Induction part is combined into by the air inlet pipe on embedded earthing pole plug upper surface；So as to the security reliability for using is improve while practical.
Description
Technical field
A kind of atmos low-temperature plasma jet generator belongs to atmospheric dielectric barrier discharge plasma technique field.
Background technology
Atmos low-temperature plasma jet generator is a kind of new atmos low-temperature plasma of rising in recent years
Discharge technology, makes the plasma that region of discharge is produced spray from jet pipe or aperture using the effect of air-flow and electric field, in nothing
Solid boundaries constraint ambient atmos environment in make towards working region directed flow formed plasma jet, space flight,
The fields such as environment, biomedicine, material surface process, food fresh keeping, disinfection, wastewater treatment are widely used.Air is forced down
Isothermal plasma jet source category is various, wherein using the atmos low-temperature plasma jet technology of dielectric impedance structure because of which
With simple structure, stable, operating distance length, active specy species is more, quantity is big the features such as, in mushroom development at this stage
Material surface modifying, biomedicine (assist wound treatment, blood clotting, tooth root canal, kill cancer cell, sterilization kill
Bacterium, various treating skin diseases), the field such as environmental improvement preventing and treating, the sewage disposal of pollution (purification of air with) there is unique skill
Art advantage and good application prospect.
1. the modified and surface treatment of material
Biomaterial for a long time with human contact when, it is necessary to fully meet the compatibility with biological environment, i.e. organism not
There is any bad biological respinse therewith.These both depend on the interaction of material surface and biological environment.At present, opposite
Thing material surface carry out processing reach the common method for improving material surface performance have wet chemical process, photochemical method process,
Ultraviolet radioactive and corona treatment etc..It is wherein in wet chemical practice process to use some poisonous chemical reagent more, no
Only serious environment pollution, also has greatly harm to human body.And the treatment technology such as photochemical method and ultraviolet radioactive method receives ray
Energy is limited, the more difficult control of its treatment effect.In contrast, atmos low-temperature plasma jet process for treating surface is to material
Only hundreds of angstroms of the depth of interaction on surface, does not interfere with the property of matrix material, and can process variously-shaped material surface,
There is process is simple, easy to operate, easily controllable, pollution-free.In addition to modified to biomaterial, dielectric impedance is put
It is (wool fiber, polyethylene fibre, big that electro-plasma is additionally operable to polymeric material (polytetrafluoroethylene (PTFE), polyethylene), fibrous material
Beans fiber terylene and polypropylene fibre), timber, inorganic metal, nonmetallic materials, aeronautical material, the modification of the material such as nano material.
2. biomedical
It is in medical domain, at present to adopt the various diseases of drug therapy more, with the development of low temperature plasma, application
Gradually expansion, numerous researchers are applied in medical domain.What which was mainly studied is plasma to organism (disease
Poison, bacterium, cell, tissue, organ, skin etc.) action effect.Effect of the plasma to organism is by plasma
Produced all kinds of free radicals (its life-span magnitude from ns to s), charged particle, ultraviolet, excited state particle etc. to organism from
The comprehensive function of molecular level is realizing.Plasma is medically applied and the aspect of most study is bacterium so far
The research of inactivation, develops the medicine equipments such as scale removal sterilization, treating for skin disease, tooth root canal, wound sterilization.Grind
Study carefully result to show, plasma is for germ (the blue the moon Salmonella of leather, the blue sun Salmonella of leather, bacterial spore, bacterial biof iotalm, fungi etc.)
All there is inactivation capacity.The research that cancer cell is killed is shown using plasma simultaneously, appropriate corona treatment can
Promote cancer cell-apoptosis, and significantly injury will not be produced to the normal cell of surrounding.Plasma can also promote cell differentiation
And wound healing, during the plasma jet ingress of air produced using air or inert gas, can all generate and cell interior
Naturally occurring similar active oxygen species (ROS) and reactive nitric species (RNS), these active particles are plasma medical applications
In key component, when which acts on zooblast and tissue, stimulate cell and tissue to produce a series of biochemical reactions,
So as to reach the effect of clinical treatment；The direct process of wound is particularly using dielectric barrier discharge plasma to skin,
Realize stimulating cell differentiation while sterilization and promote the healing of wound.In researcher's experimentation, plasma is found
There is chemical reaction with other compositions in haemocyte and blood in physical efficiency, promote wound blood solidification.Therefore dielectric barrier discharge
Plasma technique has irreplaceable effect in biomedicine.
3. environmental improvement
Increasingly serious with current environment situation, the technology of various environmental improvements meets the tendency of.Environmental improvement is mainly
Two broad aspects, air and water source.In various methods, atmos low-temperature plasma technology is with its safe, electrode life
Long, process range is wide, efficiency high, fast purification rate the advantages of, obtained the extensive concern of researcher.This technology is electric by high energy
Son bombardment, O3Various treatment technology collection such as oxidation, ultraviolet photolysis together in one, make that environmental improvement is in hgher efficiency, economy more preferably,
Simultaneously because not adopting the method pollution administration thing such as screen pack, chemical reagent, the secondary pollution to environment will not be produced.
At ambient pressure, according to different application demands go design be suitable for low-temperature plasma jet source, always wait from
Important directions in daughter science and application study.Wherein, using the atmospheric dielectric barrier discharge etc. of pin-cylinder electrode structure
Gas ions fluidic device is the atmos low-temperature plasma jet source that people's early start is used, and at present in material surface
The more ripe class jet source of the fields such as modified, biomedicine, environmental improvement application.1992, Tokyo engineering institute
Koinuma et al. adopt 13.56MHz radio frequency sources, with the mixing of inert gas (helium, argon gas) and other chemically reactive gas
Thing is working gas, obtains macroscopical gas temperature using pin-cylinder electrode jet source first and exist under dielectric impedance mode
Atmosphere cold plasma jet [Appl.Phys.Lett.1992,60 in the range of 200-400 DEG C:816-817].Research people
Member is improved to jet source structure on existing working foundation again, including：1. using the ring near jet downstream
Electrode substitutes tubular electrode, and suitably increases pin electrode tip and the distance of ring electrode, is consequently formed pin-ring electrode structural morphism
Stream source [Thin Solid Films 2006,506-507:404-408；Appl.Phys.Lett.2008,93:111501；Invention
Number of patent application 200810018165.6；Application for a patent for invention 201210425333.X；Application for a patent for invention number
02159260.8]；2. pin electrode is covered using dielectric layer, strength of discharge is further controlled by two-layered medium barrier structure, prevent
Only thermalization, is effectively increased plasma jet stability, and this improvement is allowed to the security when acting on to organism and greatly improves,
It is more applicable for repairing and improving the related applications such as injury tissue 26S Proteasome Structure and Function, such as Central China University of Science and Technology Ph.D. Dissertation
" research of atmos low-temperature plasma jet " [Appl.Phys.Lett.2008,92:081502] and corresponding patent of invention
200810046794.X (2008.7.30 days disclose, Publication No. CN 101232770A), describes a kind of atmosphere medium resistance
Gear discharge plasma jet, " high-field electrode is round metal bars, is placed in the capillary medium pipe of an end closure, high pressure
Electrode and capillary medium pipe are fixed on external agency pipe central authorities jointly, and ground connection annular electrode is not essential ", to strengthen plasma
The axial electric field of jet, and be conducive to producing plasma jet and strengthen the chemical characteristic of jet, the plasma of generation
Up to more than ten centimetres, gas temperature is close to room temperature to jet length, and security is very high.But this improvement still belongs to principle structure,
Practical, the concrete structure of its power supply introducing portion, power line introducing member, admission gear, plasma jet is not implemented
Shell mechanism of raw device etc., is both needed to further research and develop, to meet practical operation.
The content of the invention
It is an object of the invention to provide a kind of practical atmos low-temperature plasma jet generator, existing to overcome
There is technology to be still in principle structure design level, it is difficult to practical defect.
It is a feature of the present invention that being a kind of to have reached practical service-strong atmospheric dielectric barrier discharge plasma
Body generator, containing outer quartz glass tube (1), nozzle (2), external electrode (3), ground wire (4), outer wall (5), spring (6), interior electricity
Pole support ring (7), ground wire fixing end (8), nut (9), pad (10), wiring fixed cover (11), earthing pole plug (12), high pressure
Pole plug (13), center quartz glass tube (14), high pressure conductive block (15), interior electrode (16), central supported ring (17), electrode
Support set (18), glass tube support fixed cover (19), air inlet pipe (20), bolt (21), wherein：
Interior electrode (16), in bar-shaped, two ends semicircular in shape, positioned at the atmos low-temperature plasma jet generator
On central axis, made with tungsten,
Center quartz glass tube (14), lower end closed are from bottom to top coaxially tightly placed in the interior electrode (16) outward, length
The interior electrode (16) is short,
Outer quartz glass tube (1), coaxially pine be enclosed within the outer peripheral face of the center quartz glass tube (14), the outer stone
The openend of English glass tube (1) forms efflux nozzle with center quartz glass tube (14) lower surface,
External electrode (3), red copper is made, and into hollow cylindrical, is coaxially enclosed within the outer peripheral face of the outer quartz glass tube (1)
On, the lower surface of the external electrode (3) is located above the openend of the outer quartz glass tube (1),
Nozzle (2), with polytetrafluoroethylmaterial material, lower end is in frustum-like shape, is coaxially enclosed within the outer peripheral face of the external electrode (3)
On,
The interior electrode (16), center quartz glass tube (14), outer quartz glass tube (1), external electrode (3) and nozzle (2)
Electrode part is together constituted,
Outer wall (5), is made with polytetrafluoroethylene (PTFE), is a hollow cylinder, and lower end is one inside concavo-convex, coaxially
Withhold on the upper surface of the nozzle (2) frusto-conical surface,
Electrode supporting set (18), is made with polytetrafluoroethylene (PTFE), is a hollow cylinder, and lower end is in frustum-like shape, truncated cone
Lower surface is coaxially withheld on the step on the outer wall (5) top, and electrode supporting set (18) the indent end face coaxially links closely
In center quartz glass tube (14) upper surface,
Wiring fixed cover (11), is made with polytetrafluoroethylene (PTFE), is a hollow cylinder, and lower end is the recessed of a convex
Mouthful, the lower surface of the wiring fixed cover (11) is coaxially withheld on the periphery step of the electrode supporting set (18), described
Wiring fixed cover (11) is fixed with bolt (21) with electrode supporting set (18),
The outer wall (5), electrode supporting set (18) and wiring fixed cover (11) connect jointly from bottom to top and constitute one
The casing part of the individual atmos low-temperature plasma jet generator in bullet shape, in the electrode supporting set
(18) one is coaxially hold and interior electrode (16) upper end between with electrode supporting ring (7) in made by red copper,
In the upper surface of the electrode supporting set (18) and the interior electricity being located at more than outer quartz glass tube (1) upper surface
A glass tube is coaxially tightly covered between pole (16) supports fixed cover (19), the glass tube to support fixed cover (19) with poly- four
PVF is made, and at least one pore for running through is provided with upper surface, meanwhile, the glass tube supports fixed cover (19) to withhold again
On outer quartz glass tube (1) upper surface, so as to the outer peripheral face in a part of center quartz glass tube (14) and institute
Stating glass tube supports the upper surface of fixed cover (19) and the part inner peripheral surface of the electrode supporting set (18) to form an air inlet
Chamber,
High-pressure stage plug (13) and earthing pole plug (12) are opened in the wiring relatively and coaxially through screw thread insertion
In the groove of the upper surface of fixed cover (11), high-pressure stage plug (13) the selection standard plug,
High pressure conductive block (15), it is prejudicially outer to be enclosed within the high-pressure stage plug (13), it is middle with a high-pressure stage
First nut (91) for high pressure conductive block (15) described in pretension of plug (13) is pushed down, and lower surface is tight with the second nut (92)
Gu, the high pressure conductive block (15) is in the another side of the central axis axially again by the electrode supporting set (18) along axle
Fix to the extension being inserted upwardly in wiring fixed cover (11) lower surface, frequency is in 10kHz～30kHz, exchange
High-pressure stage plug (13), purple high pressure conductive block (15) made of copper, purple described in high-pressure side Jing of the voltage in the power source of 5kV～20kV
Interior electrode supporting ring (7) made of copper, it is applied on the interior electrode (16), and with positioned at interior electrode supporting ring (7) upper end
Second spring (62) between face and the high pressure conductive block (15) lower surface is transferred on interior electrode (16),
Ground wire fixing end (8), cuts off face in " ┳ " shape, and top is enclosed within earthing pole plug (12) lower end, uses pad
(10), the 3rd nut (93) fastening, the upper end of ground wire (4) are inserted from the bottom surface of the purple ground wire fixing end (8) made of copper, institute
The lower end for stating ground wire (4) is connected down on the external electrode (3) along the wire casing being opened in the electrode supporting set (18)；
Coaxially it is wrapped compression to use on ground wire (4) between the outer wall (5) upper surface and the ground wire fixing end (8) lower surface
The first spring (61),
The high-pressure stage plug (13), earthing pole plug (12), high pressure conductive block (15) and ground wire fixing end (8) are common
Plant-grid connection part is constituted,
Central supported ring (17), is made with polytetrafluoroethylene (PTFE), is coaxially tightly placed in the center quartz glass tube from outside
(14) outer peripheral face, is coaxially tightly placed in the inner peripheral surface of the outer quartz glass tube (1) from inside, for ensureing the middle cardiolith
English glass tube (14) is concentric with the outer quartz glass tube (1), is provided with least one on central supported ring (17) upper surface
The pore for running through, it is ensured that gas circuit is unimpeded,
Air inlet pipe (20), through the wiring fixing end (11), is opened on the upper surface of the electrode supporting set (18), work
Make gas to enter by the air inlet pipe (20), flow into by the outer peripheral face of a part of center quartz glass tube (14) and described
Glass tube supports the inlet chamber formed by the upper surface of fixed cover (19) and the part inner peripheral surface of the electrode supporting set (18),
The pore run through in fixed cover (19) is supported via the glass tube, the outer quartz glass tube (1) and described is entered axially into
Region between center quartz glass tube (14), constitutes induction part；Hereafter, working gas is via the central supported ring (17)
The pore for inside running through, flows out from efflux nozzle,
A kind of working gas of atmos low-temperature plasma jet generator according to claim 1 is：Including
Helium, argon gas are in interior inert gas and air, nitrogen, oxygen and its mixed gas.
The present invention effect be：Overcome the defect of prior art, solve electrode and its support section, casing part,
The structure and its interconnection problem of induction part and power supply introducing portion, is also obviously improved while practicality is solved
Security, reliability and the stability for using.
Description of the drawings
The longitudinal section of Fig. 1 present invention.
The induction part structure chart of Fig. 2 present invention.
Accompanying drawing identifier declaration
1. outer quartz glass tube；2. nozzle, is made with polytetrafluoroethylene (PTFE)；3. external electrode, is made with red copper；4. ground wire；
5. outer wall, is made with polytetrafluoroethylene (PTFE)；6. spring：61. first springs, 62. second springs；7. electrode supporting ring in, uses red copper
Make；8. ground wire fixing end, is made with red copper；9. nut：91. first nuts, 92. second nuts, 93. the 3rd nuts；10. pad
Piece；11. wiring fixed covers, are made with polytetrafluoroethylene (PTFE)；12. earthing pole plugs；13. high-pressure stage plugs；14. center quartz glass
Pipe；15. high pressure conductive blocks；Electrode in 16., is made with tungsten；17. central supported rings, are made with polytetrafluoroethylene (PTFE)；18. electrodes
Support set, is made with polytetrafluoroethylene (PTFE)；19. glass tubes support fixed cover, are made with polytetrafluoroethylene (PTFE)；20. air inlet pipe；21. bolts.
Specific embodiment
The discharge principle that fluidic generator is mainly adopted mainly is made up of inside and outside electrode for double-dielectric barrier discharge, wherein
Interior electrode 16 is tungsten bar, is semicircle at upper and lower ends；External electrode 3 is the thin copper pipe by made by red copper；Adopt between two electrodes
Separated with two-layer quartz glass tube, respectively outer quartz glass tube 1 and center quartz glass tube 14；Electric discharge is produced in electrode district two
Region between individual quartz glass tube, makes the plasma that region of discharge is produced spray from nozzle using the effect of air-flow and electric field
Go out, make plasma jet to be formed towards the directed flow of working region in the ambient atmos environment constrained without solid boundaries,
Wherein interior electrode 16 connects frequency for 10kHz～30kHz, and the High Level AC Voltage of alternating voltage 5kV～20kV, external electrode 3 are ground connection
Pole.
On outer quartz glass tube 1, outer quartz glass tube 1 supports fixed cover 19 and outer wall 5 by glass tube to 3 sets of external electrode
Fix and ensure coaxial with electrode supporting set 18, the installation for convenience of external electrode 3 is changed, nozzle 2 is designed in port, on the one hand
External electrode 3 is fixed in the axial direction, is on the other hand designed to pyramidal structure, is made fluidic generator elegant in appearance.The wiring of external electrode 3
It is to be connected with the earthing pole plug 12 of upper end by internal transmission lines, wherein ground wire 4 is by the string holes on outer wall 5
Be sent in the wire guide of electrode supporting set 18, then fix with ground wire fixing end 8, electricity is carried out by being connected with the contact of nut 93
The conduction of stream, is to ensure good contact, below ground wire fixing end 8 adds spring 61；Earthing pole plug 12 is connect using standard
Head, is threaded connection and is fixed with wiring fixing end 11, is to ensure fastness, thereunder by pad 10 and nut 93 by its
Pretension.
16 one end of interior electrode is interted in center quartz glass tube 14, and the other end is by interior electrode supporting ring 7 and electrode
Support set 18 connects, and interior electrode supporting ring 7 is red copper part, with 16 tight fit of interior electrode, is to ensure the good side when mounted of contact
Face, on the other hand can be by high-voltage transmission to interior electrode 16 by putting spring 62 by tungsten bar insertion high pressure conductive block 15；Middle cardiolith
English glass tube 14 supports fixed cover 19 to be fixed by glass tube；To ensure center quartz glass tube 14 and outer quartz glass tube
1 with one heart, and central supported ring 17 is coaxially tightly placed in the outer peripheral face of center quartz glass tube 14 from outside, coaxially from inner tight
Fit in the inner peripheral surface of outer quartz glass tube 1, at least one pore for running through is provided with 17 upper surface of central supported ring, it is ensured that gas
Road is unimpeded.
13 selection standard plug of high-pressure stage plug, is fixed with wiring fixed cover 11 by screw thread, is the tight of guarantee fixation
Property thereunder by nut 91 by its pretension, then high pressure conductive block 15 is enclosed within high-pressure stage plug 13, by nut 92
Fastened.
To ensure electric discharge between nut 93 and high pressure conductive block 15, plateau is designed on electrode supporting set 18, connect
Groove is designed in 11 relevant position of line fixed cover, and which is completely isolated.Installing, electrode supporting set 18 and wiring fixed cover 11 are
Connect-disconnect structure, is more favorable for installing, is fixed eventually through bolt 21.
Air inlet pipe 20, through wiring fixing end 11, is opened on the upper surface of the electrode supporting set 18, and working gas passes through
The air inlet pipe 20 is entered, and the pore run through in fixed cover 19 is supported via the glass tube, the outer quartz is entered axially into
Region between glass tube 1 and the center quartz glass tube 14, via the pore run through in the central supported ring 17, from penetrating
Stream spout flows out.
Working gas：Including the inert gas and air including helium, argon gas, nitrogen, oxygen and its mixed gas.
Using the benefit of Low Temperature Plasma Treating：
In terms of material surface process：
Some poisonous chemical reagent are used in wet chemical practice process, not only serious environment pollution, to human body more
There is greatly harm.And the treatment technology such as photochemical method and ultraviolet radioactive method is limited by ray energy, its treatment effect is compared with energy
Control.Depth of interaction only hundreds of angstrom of the cold-plasma surfaces treated technology to material surface, does not interfere with base in contrast
The property of body material, and variously-shaped material surface can be processed, with process is simple, easy to operate, easily controllable, nothing
The advantages of pollution.
In biomedical aspect：
Replaced using low temperature plasma or ancillary drug is compared with traditional medical procedure, what which reached controls curative effect
Fruit is more preferable, the side effect that medicine not only can be avoided to cause human body, and more rapidly and efficiently, human body will not be produced obvious
Injury.
Phenomenon in experimentation：
It is applied to the surface treatment of zirconia material：
| Time | 0s | 30s | 60s |
| Contact angle (degree) | 78.31±2.39 | 68.78±1.77 | 49.34±4.56 |
Frequency be 20kHz, voltage be Up-p=6.3kV, from material surface performance detection and cytology and molecular biology
Aspect carries out related experiment detection.The initial stage result for obtaining：Zirconia material surface is processed using helium gas plasma, with place
The change of reason time, can increase the hydrophily of material to some extent.Molecular biology experiment result shows, in the experiment condition
Under, 60s is processed most beneficial for fibroblastic adhesion and propagation, when processing 30s and 60s, after cell inoculation, 3hr shows bright
The high expression of aobvious attachment proteins, and with the prolongation of incubation time, this advantage is just no longer obvious.Experiment shows, of the invention
Low-temperature plasma jet generator can effectively change material surface performance.
It is applied to human body treating beri-beri：
Frequency be 18kHz, voltage be Up-pUnder the parameter of=6.5kV, to treating with serious tinea pedis patient.It is right
2min process is carried out at skin erosion, the symptom such as itch after the completion of process, ache substantially mitigates, after continuous treatment 3-5 days, symptom is obvious
Mitigate, affected part starts to cast off a skin, takes a turn for the better；Affected part to there is blister carries out the process of 1min, and after three days, blister is shrivelled, improvement of casting off a skin.
Contrast adopts drug therapy, initial stage result to show, the method curative effect is fast, and has no side effect.
Claims (2)
1. a kind of atmos low-temperature plasma jet generator, it is characterised in that be it is a kind of reached practical use can
The atmospheric dielectric barrier discharge plasma generator for leaning on, containing outer quartz glass tube (1), nozzle (2), external electrode (3), ground connection
Line (4), outer wall (5), spring (6), interior electrode supporting ring (7), ground wire fixing end (8), nut (9), pad (10), wiring are fixed
Set (11), earthing pole plug (12), high-pressure stage plug (13), center quartz glass tube (14), high pressure conductive block (15), interior electrode
(16), central supported ring (17), electrode supporting set (18), glass tube support fixed cover (19), air inlet pipe (20), bolt (21),
Wherein：
Interior electrode (16), in bar-shaped, two ends semicircular in shape, positioned at the center of the atmos low-temperature plasma jet generator
On axis, made with tungsten,
Center quartz glass tube (14), lower end closed are from bottom to top coaxially tightly placed in the interior electrode (16) outward, and length is compared with institute
State interior electrode (16) short,
Outer quartz glass tube (1), coaxially pine be enclosed within the outer peripheral face of the center quartz glass tube (14), the outer quartzy glass
The openend of glass pipe (1) forms efflux nozzle with center quartz glass tube (14) lower surface,
External electrode (3), red copper is made, and into hollow cylindrical, is coaxially enclosed within the outer peripheral face of the outer quartz glass tube (1),
The lower surface of the external electrode (3) is located above the openend of the outer quartz glass tube (1),
Nozzle (2), with polytetrafluoroethylmaterial material, lower end is in frustum-like shape, is coaxially enclosed within the outer peripheral face of the external electrode (3),
The interior electrode (16), center quartz glass tube (14), outer quartz glass tube (1), external electrode (3) and nozzle (2) are common
Electrode part is constituted,
Outer wall (5), is made with polytetrafluoroethylene (PTFE), is a hollow cylinder, and lower end is one inside concavo-convex, is coaxially withheld
On the upper surface of the nozzle (2) frusto-conical surface,
Electrode supporting set (18), is made with polytetrafluoroethylene (PTFE), is a hollow cylinder, and lower end is in frustum-like shape, the lower end of truncated cone
Face is coaxially withheld on the step on the outer wall (5) top, and electrode supporting set (18) the indent end face is coaxially held in institute
Center quartz glass tube (14) upper surface is stated,
Wiring fixed cover (11), is made with polytetrafluoroethylene (PTFE), is a hollow cylinder, and lower end is the recess of a convex, institute
The lower surface for stating wiring fixed cover (11) is coaxially withheld on the periphery step of the electrode supporting set (18), and the wiring is solid
Fixed set (11) is fixed with bolt (21) with electrode supporting set (18),
The outer wall (5), electrode supporting set (18) and wiring fixed cover (11) connect jointly from bottom to top and constitute one
The casing part of the atmos low-temperature plasma jet generator of bullet shape, in the electrode supporting set (18) and
One is hold between interior electrode (16) upper end coaxially with electrode supporting ring (7) in made by red copper,
In the upper surface of the electrode supporting set (18) and the interior electrode being located at more than outer quartz glass tube (1) upper surface
(16) glass tube is coaxially tightly covered between supports fixed cover (19), the glass tube to support fixed cover (19) to use polytetrafluoro
Ethene is made, and at least one pore for running through is provided with upper surface, meanwhile, the glass tube supports fixed cover (19) to withhold again
On outer quartz glass tube (1) upper surface, so as to the outer peripheral face in a part of center quartz glass tube (14) and described
Glass tube supports the upper surface of fixed cover (19) and the part inner peripheral surface of the electrode supporting set (18) to form an inlet chamber,
High-pressure stage plug (13) and earthing pole plug (12) are relative and be opened in the wiring coaxially through screw thread insertion and fix
In the groove of the upper surface of set (11), high-pressure stage plug (13) the selection standard plug,
High pressure conductive block (15), it is prejudicially outer to be enclosed within the high-pressure stage plug (13), it is middle with a high-pressure stage plug
(13) the first nut (91) for high pressure conductive block (15) described in pretension is pushed down, and lower surface is fastened with the second nut (92),
The high pressure conductive block (15) is in the another side of the central axis axially and by the electrode supporting set (18) vertically
The extension being inserted upwardly in wiring fixed cover (11) lower surface is fixed, and frequency is in 10kHz～30kHz, alternating current
High-pressure stage plug (13), purple high pressure conductive block (15) made of copper, red copper described in the high-pressure side Jing of the power source for being pressed in 5kV～20kV
System interior electrode supporting ring (7), be applied on the interior electrode (16), and be located at interior electrode supporting ring (7) upper surface
And the second spring (62) between high pressure conductive block (15) lower surface is transferred on interior electrode (16),
Ground wire fixing end (8), the face of cutting off is inShape, top are enclosed within earthing pole plug (12) lower end, with pad (10),
Three nuts (93) are fastened, and the upper end of ground wire (4) is inserted from the bottom surface of the purple ground wire fixing end (8) made of copper, the ground connection
The lower end of line (4) is connected down on the external electrode (3) along the wire casing being opened in the electrode supporting set (18)；Described
Compress first is wrapped on ground wire (4) between outer wall (5) upper surface and the ground wire fixing end (8) lower surface coaxially
Spring (61),
The high-pressure stage plug (13), earthing pole plug (12), high pressure conductive block (15) and ground wire fixing end (8) are collectively formed
Plant-grid connection part,
Central supported ring (17), is made with polytetrafluoroethylene (PTFE), is coaxially tightly placed in the center quartz glass tube (14) from outside
Outer peripheral face, the inner peripheral surface of the outer quartz glass tube (1) is coaxially tightly placed in from inside, for ensureing center quartz glass
Glass pipe (14) is concentric with the outer quartz glass tube (1), is provided with least one and runs through on central supported ring (17) upper surface
Pore, it is ensured that gas circuit is unimpeded,
Air inlet pipe (20), through the wiring fixing end (11), is opened on the upper surface of the electrode supporting set (18), work gas
Body is entered by the air inlet pipe (20), is flowed into by the outer peripheral face and the glass of a part of center quartz glass tube (14)
Pipe supports the inlet chamber formed by the upper surface of fixed cover (19) and the part inner peripheral surface of the electrode supporting set (18), via
The glass tube supports the pore run through in fixed cover (19), enters axially into the outer quartz glass tube (1) and the center
Region between quartz glass tube (14), constitutes induction part；Hereafter, working gas is passed through via the central supported ring (17) is interior
The pore worn, flows out from efflux nozzle.
2. a kind of working gas of atmos low-temperature plasma jet generator according to claim 1 is：Including helium
Gas, argon gas are in interior inert gas and air, nitrogen, oxygen and its mixed gas.
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| CN105188248A (en) * | 2015-11-02 | 2015-12-23 | 安徽理工大学 | Portable plasma generating device adopting plug-and-play dual power supplies to supply power |
| CN106793438B (en) * | 2017-01-17 | 2019-01-11 | 大连民族大学 | Ring type electrode variable diameter jet flow generating apparatus |
| CN106989390B (en) * | 2017-04-07 | 2019-05-24 | 西安交通大学 | A kind of Bunsen burner formula low temperature plasma assisted combustion device |
| CN107509298B (en) * | 2017-09-28 | 2024-04-05 | 博奥生物集团有限公司 | Array type large-area cold plasma generator |
| EP3524204A1 (en) | 2018-02-07 | 2019-08-14 | Albert-Ludwigs-Universität Freiburg | Plasma jet device |
| CN110411841B (en) * | 2019-07-05 | 2021-09-21 | 人本股份有限公司 | Detection device for detecting load bearing capacity of steering gear bearing |
| CN112911778A (en) * | 2019-11-19 | 2021-06-04 | 核工业西南物理研究院 | Plasma generator for powder spheroidizing or fine coating |
| CN114431948B (en) * | 2021-08-25 | 2023-10-13 | 深圳高性能医疗器械国家研究院有限公司 | Plasma surgical knife and operation method thereof |
| CN114051306B (en) * | 2021-11-15 | 2024-02-06 | 安徽工业大学 | Atmospheric pressure plasma jet generator with adjustable beam diameter and use method |
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| CN101835336A (en) * | 2010-05-21 | 2010-09-15 | 江苏大学 | Double-dielectric barrier discharge low-temperature plasma generator |
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