CN203289730U - Dielectric barrier discharge electrode - Google Patents
Dielectric barrier discharge electrode Download PDFInfo
- Publication number
- CN203289730U CN203289730U CN2012207458445U CN201220745844U CN203289730U CN 203289730 U CN203289730 U CN 203289730U CN 2012207458445 U CN2012207458445 U CN 2012207458445U CN 201220745844 U CN201220745844 U CN 201220745844U CN 203289730 U CN203289730 U CN 203289730U
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- Prior art keywords
- electrode
- dielectric barrier
- barrier discharge
- discharge electrode
- aluminum
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- 230000004888 barrier function Effects 0.000 title claims abstract description 26
- 229910052782 aluminium Inorganic materials 0.000 claims description 45
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 45
- 238000007745 plasma electrolytic oxidation reaction Methods 0.000 abstract description 15
- 229910052751 metal Inorganic materials 0.000 abstract description 14
- 239000002184 metal Substances 0.000 abstract description 14
- 238000000034 method Methods 0.000 abstract description 10
- 238000009501 film coating Methods 0.000 abstract description 7
- 239000007888 film coating Substances 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 3
- 238000002360 preparation method Methods 0.000 abstract description 2
- 238000009413 insulation Methods 0.000 abstract 3
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 35
- 238000001035 drying Methods 0.000 description 12
- 238000004140 cleaning Methods 0.000 description 11
- 238000000576 coating method Methods 0.000 description 11
- 239000007772 electrode material Substances 0.000 description 11
- 239000011248 coating agent Substances 0.000 description 10
- -1 micro-arc oxidation Substances 0.000 description 6
- 239000003792 electrolyte Substances 0.000 description 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 229910044991 metal oxide Inorganic materials 0.000 description 4
- 150000004706 metal oxides Chemical class 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 230000010355 oscillation Effects 0.000 description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000007605 air drying Methods 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 229910021538 borax Inorganic materials 0.000 description 2
- 229910052681 coesite Inorganic materials 0.000 description 2
- 229910052906 cristobalite Inorganic materials 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- UQGFMSUEHSUPRD-UHFFFAOYSA-N disodium;3,7-dioxido-2,4,6,8,9-pentaoxa-1,3,5,7-tetraborabicyclo[3.3.1]nonane Chemical compound [Na+].[Na+].O1B([O-])OB2OB([O-])OB1O2 UQGFMSUEHSUPRD-UHFFFAOYSA-N 0.000 description 2
- 238000006056 electrooxidation reaction Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 235000010339 sodium tetraborate Nutrition 0.000 description 2
- 239000004328 sodium tetraborate Substances 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 229910052682 stishovite Inorganic materials 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 229910052905 tridymite Inorganic materials 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 230000005226 mechanical processes and functions Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The utility model provides a dielectric barrier discharge electrode. A micro-arc oxidation technology is adopted for manufacturing an insulation medium layer of the dielectric barrier discharge and a discharge electrode on one side, then, a film coating technology is utilized for generating a discharge electrode on the other side on the manufactured insulation medium layer, so the manufacturing of the tightly pasted and integral dielectric barrier discharge electrode is realized. The preparation method of the dielectric barrier discharge electrode is simple and convenient to be implemented and does not involve a lot of mechanical technological processes, and the tight pasting between the insulation dielectric layer and the metal electrode layer can be guaranteed; and the size and the shape of the electrode can be set according to requirements, and the dielectric constant of the dielectric layer can also be controlled through regulating the micro-arc oxidation time, so the purpose of realizing more effective discharge is achieved.
Description
Technical Field
The utility model belongs to the technical field of plasma discharges, concretely relates to dielectric barrier discharge electrode.
Background
Dielectric Barrier Discharge (DBD) refers to a kind of non-equilibrium gas Discharge in which an insulating Dielectric is inserted into a Discharge space. The design forms of the dielectric barrier discharge electrode structure are various. The method is characterized in that a certain working gas is filled between two discharge electrodes, one or two electrodes are covered by an insulating medium, or the medium can be directly suspended in a discharge space or filled by a granular medium, and when a high enough alternating voltage is applied between the two electrodes, the gas between the electrodes can be broken down to generate discharge, namely, dielectric barrier discharge is generated. In practical applications, the inline electrode structure is widely applied to various chemical reactors, and the flat plate electrode structure is widely applied to modification, grafting, surface tension improvement, cleaning and hydrophilic modification of polymer and metal films and plates in industry.
In the prior art, for example, chinese patent CN200956366 relates to a spiral electrode dielectric barrier discharge device, in which electrodes are tightly wound on the outer surface of a dielectric in a spiral form, and a discharge cavity is formed in a discharge tube. For example, in chinese patent CN101330794, the medium blocking discharge at atmospheric pressure produces a low temperature plasma jet device, the ring electrode is tightly attached to the outer wall of the medium pipe, the working gas enters the medium pipe through the flow meter and the check valve via the connector, and the plasma is blown out to form a plasma jet. And the plasma exciter in the chinese patent CN201010113743 dielectric barrier discharge plasma cyclone device is composed of an electrode pair consisting of two electrodes, the two electrodes are arranged at two sides of the combustion stabilizing cone cover in a staggered manner, the electrode at the side of the combustion stabilizing cone cover contacting the flame is an exposed electrode, and is connected with the high-voltage end of the high-voltage power supply; the electrode on the other side of the stable combustion conical cover is a buried electrode and is connected with the grounding end of the high-voltage electrode; the high voltage is switched on to ionize the air near the plasma exciter.
The various devices are all deficient in the aspects of practicability and safety, and need to be further improved: (1) in actual use, people hope that the electrode can be conveniently replaced, but the existing electrode is usually divided into a plurality of parts and is troublesome to replace. (2) The closer the insulated conductor in the dielectric barrier discharge is attached to the discharge electrode, the more stable the discharge is, but the winding or pressing in the prior art can not realize the purpose. (3) In the prior art, when the medium or the electrode is slightly deformed due to the heating of the discharge space, the medium or the electrode cannot continuously keep close contact, so that the discharge efficiency and the discharge effect are influenced. (4) In view of the safety problem of the dielectric barrier discharge, the potential threat to the operator caused by the leakage of the high-voltage channel generated between the electrodes must be avoided. (5) The electrode manufacturing process and the installation mode in the prior art are divided into a plurality of steps, and the efficiency is low.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a dielectric barrier discharge electrode to improve prior art not enough in aspects such as practicality, security, manufacturing efficiency, realize high-efficient, safe discharging, reduce energy consumption and human cost simultaneously.
The utility model adopts the technical proposal that: a dielectric barrier discharge electrode is characterized in that a micro-arc oxidation technology is adopted to manufacture an insulating dielectric layer and a discharge electrode on one side of the insulating dielectric layer, and a coating technology is utilized to generate a discharge electrode on the other side of the insulating dielectric layer, so that the tightly attached and integrated dielectric barrier discharge electrode is manufactured.
The electrode consists of a lower electrode, an insulating medium layer and a coated upper electrode, wherein the lower electrode is an aluminum tube with the diameter of 1 mm-50 cm or an aluminum sheet with the side length of 1 mm-500 cm.
Covering a part of a metal electrode material substrate subjected to primary cleaning and drying treatment with a material which is not easy to generate electrochemical corrosion, simultaneously keeping a part of metal exposed outside, and preparing the exposed metal into an insulated metal oxide dielectric layer by a micro-arc oxidation technology; then removing the coated film, cleaning the electrode material obtained after micro-arc oxidation, and drying; then covering a template on the oxidized side of the dried electrode material, and carrying out film coating treatment on the template and the electrode material; and removing the coated template after the film coating is finished to obtain the required dielectric barrier discharge electrode material.
The utility model discloses foretell dielectric barrier discharge electrode's manufacturing method, the step of this method mainly includes: the method comprises the following steps of initial cleaning, drying, film coating, micro-arc oxidation, film removing, secondary cleaning, drying, plate coating, film coating and plate removing; wherein,
covering a part of a metal electrode material substrate subjected to primary cleaning and drying treatment with a material which is not easy to generate electrochemical corrosion, simultaneously keeping a part of metal exposed outside, and preparing the exposed metal into an insulated metal oxide dielectric layer by a micro-arc oxidation technology; then removing the coated film, cleaning the electrode material obtained after micro-arc oxidation, and drying; then covering a template on the oxidized side of the dried electrode material, and carrying out film coating treatment on the template and the electrode material; and removing the coated template after the film coating is finished to obtain the required dielectric barrier discharge electrode material.
The method is implemented as follows:
firstly, selecting an aluminum pipe or an aluminum sheet with proper size according to the requirement, and then soaking the aluminum pipe or the aluminum sheet in acetone or alcohol for ultrasonic oscillation to clean impurities on the surface; drying the aluminum material after the initial cleaning, such as natural air drying or drying;
then, coating corrosion-resistant materials on some parts of one side surface of the aluminum pipe or the aluminum sheet as required, wherein the total area of the coated parts is smaller than that of one side surface of the aluminum sheet; the coating mode can adopt a direct coating, glue mixing and bonding or film pasting method according to different selected materials; putting the coated aluminum material into electrolyte, and introducing three-phase cross-linking to the electrolyteCarrying out micro-arc oxidation on the current high voltage, wherein the voltage range of the three-phase alternating current high voltage is 300-700V, the current range is 0.1-20A, and the micro-arc oxidation time is 3-120 minutes; taking out the aluminum pipe or aluminum sheet after micro-arc oxidation treatment, removing the film material coated on the surface, and then putting the aluminum pipe or aluminum sheet into deionized water for ultrasonic oscillation cleaning; taking out the aluminum tube or aluminum sheet and drying, thus, the part with the film on the surface of the aluminum material is not micro-arc oxidized, the part without the film becomes insulated alumina, one side of the original material without coating material, namely the oxidized aluminum part covers the template, special points need to be pointed out that part of the aluminum which is not oxidized is still arranged on the other side, the surface area of the template is smaller than that of one side of the aluminum material, the template can be in a grid shape, a comb shape, a spiral shape or other needed shapes, the material of the template can be metal, organic matter or metal oxide, the side coated with the plate on the surface of the aluminum material is plated with a metal film, the plating can be carried out by using a high-pressure cathode-1In the environment of Pa air pressure, applying 3000V voltage to a cathode made of copper, applying negative bias to the aluminum material, treating for 1-120 min, and taking out; and removing the template covered on the aluminum material to obtain the required finished product of the dielectric barrier discharge electrode, wherein the finished product of the dielectric barrier discharge electrode consists of a lower electrode, an insulating dielectric layer and a plated upper electrode.
Wherein, the diameter of the aluminum tube is 5 cm, or the side length of the aluminum sheet is 10 cm.
Wherein, the corrosion-resistant material is NaSiO3Polytetrafluoroethylene or SiO2And (3) pulverizing.
Wherein, the electrolyte can be selected from sodium tetraborate.
Wherein, the method for removing the film material coated on the surface can be washing, scraping or polishing.
Compared with the prior art, the utility model the advantage lie in:
1. dielectric barrier discharge electrode preparation method simple accurate, do not relate to more mechanical process flow, can guarantee the inseparable laminating between dielectric layer and the metal electrode.
2. The utility model discloses can set for the size, the shape of electrode as required, can also come the dielectric constant of control dielectric layer through adjusting micro arc oxidation time to reach and realize more effective discharge's purpose.
Drawings
Fig. 1 is an overall flow chart of the present invention.
Fig. 2 is a schematic structural diagram of a film laminating process according to the present invention, wherein (a) is a side view, and (b) is a top view.
Fig. 3 is a schematic view of a plate covering process structure according to the present invention.
Fig. 4 is a schematic view of the template molding involved in the plate-coating process.
Fig. 5 is a schematic structural diagram of the dielectric barrier discharge electrode of the present invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings and specific embodiments.
The embodiment of the utility model provides an adopt aluminium (can also choose metal such as magnesium, copper or its alloy) as electrode material. Firstly, selecting an aluminum pipe (such as the diameter of 5 cm) or an aluminum sheet (such as the side length of 10 cm) with proper size according to the requirement, and then soaking the aluminum sheet in acetone or alcohol for ultrasonic vibration to clean impurities on the surface. And drying the aluminum material after the initial cleaning, such as natural air drying or drying. Next, as shown in FIG. 2, a corrosion-resistant material 22 (e.g., NaSiO) is applied to some portion of one side surface of the aluminum material 21 as required3Polytetrafluoroethylene, SiO2Powder, etc.), the total area of the coated portion is smaller than the surface area of one side of the aluminum material. The coating mode can adopt the methods of direct coating, glue mixing and bonding, film pasting and the like according to different selected materials. HandleAnd (3) putting the coated aluminum material into an electrolyte, introducing a three-phase alternating current high voltage (such as 300-700V and 0.1-20A) into the electrolyte, and performing micro-arc oxidation, wherein the electrolyte can be selected from sodium tetraborate and the like. The micro-arc oxidation time is 3 minutes to 120 minutes. And taking out the aluminum material after the micro-arc oxidation treatment, and removing the film material coated on the surface by adopting washing, scraping, polishing and the like. And then putting the aluminum material into deionized water for ultrasonic oscillation cleaning. And taking out the aluminum material and drying. Thus, the coated part of the aluminum material surface is not micro-arc oxidized, and the non-coated part becomes insulating aluminum oxide. Referring to fig. 3, the template 32 is covered on one side 31 of the material where the coating material was not originally applied, i.e. the oxidized aluminum portion, and it is noted that there is still a portion of the aluminum 21 that is not oxidized on the other side. Referring to fig. 4, the surface area of the template is smaller than that of the aluminum material, the template may be in a grid, comb, spiral or other desired shape, and the material of the template may be metal (such as copper, stainless steel, lead, etc.), organic (polytetrafluoroethylene, polypropylene, polyethylene, etc.), metal oxide (alumina, magnesium oxide, etc.), etc. And plating a metal film on the side coated with the plate on the surface of the aluminum material. The coating can be carried out using a high-pressure cathode arc, e.g. at 10-1And in the atmosphere of Pa air pressure, applying 3000V voltage to a cathode made of copper, applying negative bias voltage to the aluminum material, treating for 1-120 minutes, and taking out. And removing the template covered on the aluminum material to obtain the required electrode. Referring to fig. 5, the dielectric barrier discharge electrode of the present invention comprises a lower electrode 21, an insulating dielectric layer 31, and a plated upper electrode 51.
Details not described in the present specification belong to the prior art known to those skilled in the art.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (1)
1. A dielectric barrier discharge electrode is characterized by comprising a lower electrode (21), an insulating dielectric layer (31) and a coated upper electrode (51), wherein the lower electrode (21) is an aluminum tube with the diameter of 1-100 cm or an aluminum sheet with the side length of 5-500 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207458445U CN203289730U (en) | 2012-12-31 | 2012-12-31 | Dielectric barrier discharge electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207458445U CN203289730U (en) | 2012-12-31 | 2012-12-31 | Dielectric barrier discharge electrode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203289730U true CN203289730U (en) | 2013-11-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012207458445U Expired - Lifetime CN203289730U (en) | 2012-12-31 | 2012-12-31 | Dielectric barrier discharge electrode |
Country Status (1)
| Country | Link |
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| CN (1) | CN203289730U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111663162A (en) * | 2019-03-05 | 2020-09-15 | 华贸中经环保科技(天津)有限公司 | Micro-arc oxidation electrolyte and micro-arc oxidation method |
-
2012
- 2012-12-31 CN CN2012207458445U patent/CN203289730U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111663162A (en) * | 2019-03-05 | 2020-09-15 | 华贸中经环保科技(天津)有限公司 | Micro-arc oxidation electrolyte and micro-arc oxidation method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131113 |
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| CX01 | Expiry of patent term |