CN105491775B - A kind of raising arc plasma generator operation stability and the method and apparatus in life-span - Google Patents
A kind of raising arc plasma generator operation stability and the method and apparatus in life-span Download PDFInfo
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- CN105491775B CN105491775B CN201511017423.5A CN201511017423A CN105491775B CN 105491775 B CN105491775 B CN 105491775B CN 201511017423 A CN201511017423 A CN 201511017423A CN 105491775 B CN105491775 B CN 105491775B
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- anode
- coating
- plasma generator
- arc
- arc plasma
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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
- H05H1/26—Plasma torches
- H05H1/32—Plasma torches using an arc
- H05H1/34—Details, e.g. electrodes, nozzles
- H05H1/3405—Arrangements for stabilising or constricting the arc, e.g. by an additional gas flow
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Coating By Spraying Or Casting (AREA)
- Plasma Technology (AREA)
Abstract
The present invention relates to a kind of raising arc plasma generator operation stability and the method and apparatus in life-span, the arc plasma generator device mainly to include negative electrode, anode, insulating part and outer tube.By carrying out special coating film treatment to arc plasma generator electrode surface, high reaction activity material, which is prepared, in electrode surface disperses embedded composite coating, the diffused of electric arc arc root is facilitated to attach, so as to reduce the electrode erosion of arc plasma generator, operation stability and life-span are improved.
Description
Technical field
The present invention relates to a kind of raising arc plasma generator operation stability and the method and apparatus in life-span.
Background technology
The non-diverting formula arc plasma generator of direct current industrial manufacture, Science Explorations, environmental protection, health care,
The application of the existing many decades in the wide field such as national defense safety and research history.The form of generator is even more varied, from normal
It is the simplest only structure of cylindrical cathode and sheath, pipe arc, stacked, to miscellaneous special construction.Nothing
By which kind of structure and purposes and the non-diverting formula electric arc of power grade, it is common the characteristics of be to lead to by electric current of gas discharge arc
Road connects negative electrode and anode.In the gases such as the argon of flowing, nitrogen, hydrogen, air or gaseous mixture, produce put between a cathode and an anode
Electric arc and heated working gas, form thousands of jets down to degree up to ten thousand.
Current density of the electric arc in electrode surface adhesion zone can exceed that 108A/m2, the generator life-span caused by electrode erosion
Problem is always this kind of generator effective use of influence, reduction maintenance cost and technical requirements, it is continuous to push wider array of long-time to
Run the bottleneck factor of application.Meanwhile the pollution of electrode erosion product also limit this kind of plasma in fine components material
Synthesis, in wind tunnel experiment the field such as material thermal characteristics accurate evaluation application.Therefore, recent decades, various reduction electrodes burn
Erosion is never interrupted with the trial for improving the plasma generator life-span.
What the large power electric arc plasma generator that high-efficiency and continuous operates in commercial Application lost with greater need for high life low fever
Generator.At present, sandwich longer interlude between a cathode and an anode in generator, widen the distance between negative electrode and anode
To improve arc voltage so that arc current is reduced under the conditions of identical arc power, to reduce electrode erosion.Or adopt simultaneously
Disperse attaching of the electric arc in electrode surface with multipair electrode group, to reduce the local current density for attaching arc root, slow down electrode
The pernicious ablation of local.Simply the hot plasma generator architecture of this structure is complicated, safeguards and expends big, the high electricity of power supply needs
Pressure design.
The content of the invention
It is an object of the invention to：For the non-diverting formula arc plasma generator anode ablation problem of direct current, propose
It is a kind of to reduce electrode erosion, improve arc plasma generator operation stability and the method and apparatus in life-span.
The present invention provides a kind of method for reducing arc plasma generator electrode erosion, comprises the following steps：
The first step, surface coating processing is carried out to the anode of arc plasma generator, is attached at for influenceing electric arc
The attaching reaction energy of electrode surface or scattered macro attachment point, so as to reduce electrode erosion；
Second step, external voltage excite and electric arc are produced between negative electrode and anode, and the electric arc transmits along negative electrode to anode direction；
3rd step, the electric arc attach the anode for carrying out surface treatment, and electric arc weakens to anode ablation.
Preferably, surface coating processing using ion plating, magnetic control to target sputter or thermal spraying method.
Preferably, the surface coating processing is to prepare high reaction activity material in anode surface to disperse embedded composite wood
Expect coating.
Preferably, the composite coating is containing aluminium, titanium, zirconium, magnesium film and its oxide hybrid films, multilayer polyhybird knot
Structure composite membrane or transition structure film.
Preferably, the composite coating is electric conductor, makes to be formed by Free Surface connection electrode matrix in coating
Conductive microchannel.
According to above method, the present invention also proposes a kind of arc plasma generator for improving operation stability, and it is special
Sign is, including：
Negative electrode；
Anode, it is arranged on the cathode arc transmission direction downstream；
Coating, anode surface is attached to, makes anode that there is specific surface structure；
Insulating part, the insulating part both ends connect the negative electrode and anode respectively；
Outer tube, wrap up the insulating part and connect assembly with the anode.
Preferably, in addition to：Interlude is arranged between the negative electrode and anode.
Preferably, the coating is sputtered using ion plating, magnetic control to target or the method for thermal spraying is attached to the anode table
Face.
Preferably, the coating is that high reaction activity material disperses embedded composite coating.
Preferably, the composite coating is containing aluminium, titanium, zirconium, magnesium film and its oxide hybrid films, multilayer polyhybird knot
Structure composite membrane and transition structure film, and be electric conductor.
Beneficial effects of the present invention：
According to the species and flow and condition of work of practical application gas, generator electrode is carried out at special plated film
Reason, improve operation stability and the life-span of arc plasma generator.
Brief description of the drawings
Fig. 1 is arc plasma generator structural representation of the present invention；
Fig. 2 is a-quadrant enlarged drawing in Fig. 1.
Embodiment
The basic thought of the present invention is that arc plasma generator electrode surface carries out special coating film treatment, in electrode
Surface prepares high reaction activity material and disperses embedded composite coating, facilitates the diffused of electric arc arc root to attach, so as to drop
The electrode erosion of low arc plasma generator, improve operation stability.
Fig. 1 provides a kind of arc plasma generator for reducing electrode erosion, negative electrode 1, interlude 2, anode 3, insulation
Part 4 and outer tube 5.Interlude 2 is arranged on the electric arc transmission direction downstream of negative electrode 1；Anode 3 has anode 3 by surface treatment
Specific surface structure；The both ends of insulating part 4 connect interlude 2 and anode 3 respectively；Outer tube 5 wraps up interlude 2, insulating part 4 and sun
Pole 3 connects assembly.This generator also includes gas circuit 8 and water cooling path 9.Gas circuit 8 provides work gas for generator；Water cooling is led to
Road 9 is used to cool down the anode 3, negative electrode 1 and interlude 2.The electricity after jet 6 and diffusion is given in figure
Arc arc root 7.
If generator does not include interlude, gas circuit 8 is positioned only between negative electrode 1 and anode 3.Water cooling path 9, is used for
Cool down the anode 3, negative electrode 1.
External voltage excites and produces electric arc between plasma cathode 1 and anode 3；Electric arc is from negative electrode 1 by the He of interlude 2
Insulating part 4 moves to the direction of anode 3, and final electric arc arc root 7 attaches anode 3.Anode 3 is handled by surface coating, in electrode table
Face prepares high reaction activity material and disperses embedded composite coating 31, facilitates the diffused of electric arc arc root to attach, so as to drop
The electrode erosion of low arc plasma generator, improve operation stability.
Such as Fig. 2, after surface coating processing is done to anode, the finer structures of anode surface coating 31.Surface coating processing is adopted
With ion plating, magnetic control to the method for target sputtering or thermal spraying, answering for the scattered insertion of high reaction activity material is prepared in anode surface
Condensation material coating.Composite coating is containing aluminium, titanium, zirconium, magnesium film and its oxide hybrid films, multilayer polyhybird structure composite film
Or transition structure film.Composite coating shown in Fig. 2 is electric conductor, is formed in coating 31 by Free Surface connection electrode base
The conductive microchannel 32 of body.Such coating 31 effectively reduces ablation of the electric arc to anode 3, improves arc plasma generator
Operation stability and the life-span
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (5)
1. a kind of raising arc plasma generator operation stability and the method in life-span, it is characterised in that including following step
Suddenly：
The first step, surface coating processing is carried out to the anode of arc plasma generator, electrode is attached at for influenceing electric arc
The attaching reaction energy on surface or scattered macro attachment point, so as to reduce electrode erosion；The surface coating processing is in anode table
Face prepares high reaction activity material and disperses embedded composite coating；The composite coating is containing aluminium, titanium, zirconium, magnesium film
And its oxide hybrid films, multilayer polyhybird structure composite film or transition structure film；The composite coating is electric conductor, is made
The conductive microchannel by Free Surface connection electrode matrix is formed in coating；
Second step, external voltage excite and electric arc are produced between negative electrode and anode, and the electric arc transmits along negative electrode to anode direction；
3rd step, the electric arc attach the anode for carrying out surface treatment, and electric arc weakens to anode ablation.
2. according to the method for claim 1, it is characterised in that：Surface coating processing is sputtered using ion plating, magnetic control to target
Or the method for thermal spraying.
A kind of 3. arc plasma generator for improving operation stability, it is characterised in that including：
Negative electrode；
Anode, it is arranged on the cathode arc transmission direction downstream；
Coating, the anode surface is attached to, makes anode that there is specific surface structure；The coating is high reaction activity material point
Dissipate embedded composite coating；The composite coating is more containing aluminium, titanium, zirconium, magnesium film and its oxide hybrid films, multilayer
Mixed structure composite membrane and transition structure film, and be electric conductor, make to be formed by Free Surface connection electrode matrix in coating
Conductive microchannel；
Insulating part, the insulating part both ends connect the negative electrode and anode respectively；
Outer tube, wrap up the insulating part and connect assembly with the anode.
4. arc plasma generator according to claim 3, it is characterised in that also include：Interlude is arranged on institute
State between negative electrode and anode.
5. arc plasma generator according to claim 3, it is characterised in that the coating is using ion plating, magnetic
Control and the anode surface is attached to the method for target sputtering or thermal spraying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511017423.5A CN105491775B (en) | 2015-12-29 | 2015-12-29 | A kind of raising arc plasma generator operation stability and the method and apparatus in life-span |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511017423.5A CN105491775B (en) | 2015-12-29 | 2015-12-29 | A kind of raising arc plasma generator operation stability and the method and apparatus in life-span |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105491775A CN105491775A (en) | 2016-04-13 |
| CN105491775B true CN105491775B (en) | 2018-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201511017423.5A Expired - Fee Related CN105491775B (en) | 2015-12-29 | 2015-12-29 | A kind of raising arc plasma generator operation stability and the method and apparatus in life-span |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107645822A (en) * | 2017-09-18 | 2018-01-30 | 中国人民解放军空军工程大学 | A kind of air intake duct shock wave control device and method based on the electric discharge of surface magnetic control arc |
| CN114501763A (en) * | 2020-10-26 | 2022-05-13 | 新奥(天津)能源技术有限公司 | Cathode head of plasma torch and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6114649A (en) * | 1999-07-13 | 2000-09-05 | Duran Technologies Inc. | Anode electrode for plasmatron structure |
| DE102008022719A1 (en) * | 2007-12-06 | 2009-06-18 | Iffländer, Reinhard | Plasma burner for plasma applications e.g. powder coatings and welding and cutting, comprises toroidal cathode, plasma nozzle with connection to mounting plate comprising cooler, gas intake ports, and electrode acting as toroidal anode |
| CN103648229A (en) * | 2013-11-22 | 2014-03-19 | 中国科学院力学研究所 | An electric arc plasma generator and a method for improving the stability and the security of the operation of the generator |
| CN104838730A (en) * | 2012-10-01 | 2015-08-12 | 弗雷特等离子实验室公司 | Plasma arc torch having multiple operation modes |
-
2015
- 2015-12-29 CN CN201511017423.5A patent/CN105491775B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6114649A (en) * | 1999-07-13 | 2000-09-05 | Duran Technologies Inc. | Anode electrode for plasmatron structure |
| DE102008022719A1 (en) * | 2007-12-06 | 2009-06-18 | Iffländer, Reinhard | Plasma burner for plasma applications e.g. powder coatings and welding and cutting, comprises toroidal cathode, plasma nozzle with connection to mounting plate comprising cooler, gas intake ports, and electrode acting as toroidal anode |
| CN104838730A (en) * | 2012-10-01 | 2015-08-12 | 弗雷特等离子实验室公司 | Plasma arc torch having multiple operation modes |
| CN103648229A (en) * | 2013-11-22 | 2014-03-19 | 中国科学院力学研究所 | An electric arc plasma generator and a method for improving the stability and the security of the operation of the generator |
Non-Patent Citations (1)
| Title |
|---|
| Electron Density and Temperature Distribution in a Supersonic DC Plasma Jet Generated at Reduced Pressure;Jinwen Cao等;《LHD》;20150702;图3 * |
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| CN105491775A (en) | 2016-04-13 |
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