CN1919465A - Needle-array electrode double-pole corona discharge assembly - Google Patents
Needle-array electrode double-pole corona discharge assembly Download PDFInfo
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- CN1919465A CN1919465A CN 200610047776 CN200610047776A CN1919465A CN 1919465 A CN1919465 A CN 1919465A CN 200610047776 CN200610047776 CN 200610047776 CN 200610047776 A CN200610047776 A CN 200610047776A CN 1919465 A CN1919465 A CN 1919465A
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Abstract
The invention discloses a double-electrode corona discharging device of needle array electrode in the low-temperature plasmid and environmental pollution harnessing technological domain, which comprises the following parts: electric control unit, high-pressure DC power and double-electrode corona discharging reactor, wherein the double-electrode corona discharging reactor consists of high-pressure electrode and ground electrode, which are needle array electrodes.
Description
Technical field
The invention belongs to low temperature plasma and environmental pollution treatment technology field, is a kind of needle-array electrode double-pole corona discharge assembly.
Background technology
Corona discharge is one of main discharge mode that produces under the normal pressure plasma.Because of efficiently having secondary pollution, its practicality is not widely used in environmental pollution improvement.
Corona discharge divides main wired cartridge type from electrode structure at present, and line is board-like, needle plate formula etc., and line or pin are high-field electrode, tube or plate are ground electrode.High voltage source is divided into positive high voltage power supply and negative high voltage power source by polarity, divides direct current by high pressure output waveform characteristic, interchange and high voltage pulse etc.Open source literature Environmental Pollution and Control, 2006,283:205-209 has introduced the application study of corona discharge pulse.Wherein pulse shaping and pulse transmission technique are very complicated, each high tension apparatus characteristic directly influences the high-voltage pulse corona discharge characteristic in the electric power loop, the power-efficient that energy consumption can reach greatly at present in pulse shaping and the burst transmissions process is about 70%, the problem that also has power supply and reactor coupling, each high voltage device is subjected to pulse shock to have the present pulsed capacitance life-span of life problems only to reach 109～1010 times in addition, so also prematurity of this technical development particularly remains its peak power output of power supply that the new breakthrough crest value of impulse voltage can reach 100 ~ 150kV and only reaches tens kW in the research of high-power and high pulse voltage peak value.
For line cartridge type or line plate-type reactor, positive high voltage dc corona discharge district is significantly less than the negative dc high voltage corona discharge region, and negative corona discharge is more stable, so extensive use is negative dc corona discharge, magnitude of voltage is generally below tens kV.For the industrial electro dedusting of routine with produce application such as a spot of anion, negative dc corona discharge enough strongly.But be used to collect ultra-fine particles in order to produce stronger streamer-discahrge, remove harmful chemical, or change metal or polymer surface characteristic etc., the direct current negative corona discharge is not competent.In addition, a kind of glow discharge mode that also grows up is in recent years just used a negative dc high voltage power supply and multistylus electrode reactor to the metallic plate electrode, and negative high voltage is added on the multistylus electrode, space discharge between described electrode is handled the gas of flowing through.The requirement air velocity of flowing through reaches tens m/s even hundreds of m/s, to guarantee discharge stability.Because this discharge belongs to glow discharge, the high energy electron energy level～1ev of its generation is low with respect to high energy electron energy level 5～10ev that streamer-discahrge produces, and brings limitation to application.
Summary of the invention
The purpose of this invention is to provide a kind of under room temperature, normal pressure, bipolar corona discharge generating means that can operation steady in a long-term efficient.
Know-why of the present invention is: electric field pole is inhomogeneous around the point electrode, adds dc high-voltage and can form corona discharge stable under the atmospheric pressure.
The present invention is achieved through the following technical solutions: needle-array electrode double-pole corona discharge assembly, by electric control unit, high-voltage DC power supply, high pressure access interface 1, electrode plate with high voltage 2, ground electrode plate 3 and earthing pole 4 are formed, electrode plate with high voltage 2 adopts identical pin array structure with ground electrode plate 3, promptly on battery lead plate, be welded with 2-58 row, the needle point body of every row 2-50 root, needle point body on the battery lead plate is orderly arrangement, spacing between the needle point body is in 15-30mm, needle point height degree is 5-7mm, the spacing of the needle point body on electrode plate with high voltage 2 and the ground electrode plate 3 is at 15-40mm, high pressure access interface 1 is connected with high-voltage DC power supply, pin battery lead plate 3 in array is connected with earthing pole 4, and high-voltage DC power supply adds positive negative dc high voltage 10-30kV.
Electrode plate with high voltage 2 and ground electrode plate 3 adopt stainless steel, and high-voltage electrical apparatus connection employing porcelain bushing and refractory seals glue effect are best.In order to make long-term, stable, the operation efficiently of corona discharge reactor device, add under the positive direct-current high pressure identical, the pin array forms the average field intensity of electric field greater than other several frequently seen electrode structure line tubes to needle-array electrode, the line plate, needle plate, so can obtain bigger electric current, thereby pairing discharge power is higher.Because two electrodes are the pin array structure, discharge occurs in the needle point place, so captured the stability that thicker particulate also can not influence discharge on two electrodes.
Effect of the present invention and benefit are to adopt the bipolar discharge electrode structure of pin array to the pin array, but improved the maximum injecting power of positive direct-current corona discharge.Two electrodes are the pin array structure, and discharge occurs in the needle point place, so captured the stability that thicker particulate also can not influence discharge on two electrodes, have improved the stability of discharge and the regeneration period of reactor greatly.Applied range of the present invention can be processed the reactor of various different sizes as required.The required less investment of its disposable apparatus, the capacity usage ratio height, operating cost is low, and is easy to maintenance.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is a pin array bipolar corona discharge structure of reactor schematic diagram of the present invention.
Among the figure: 1, high pressure access interface, 2, pin array high-field electrode, 3, pin electrode in array, 4, earthing pole.
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples.
Embodiment 1
Spininess point body is to the research of spininess point body bipolar corona discharge C-V characteristic.High-pressure side and ground end are equidistant distribution 10 needle point bodies in a straight line.At needle point body radius a=0.1mm, homopolarity needle point body distance s=20mm under the electrode spacing d=20mm condition, measures its C-V characteristic.The volt-ampere curve of the bipolar corona discharge of positive corona and negative corona is comparatively approaching, comprises that spark-over voltage is also comparatively approaching.Keep two in above-mentioned three electrode structure parameters necessarily to change the 3rd parameter, obtain: discharge current I reduces with the increase of needle point body radius a and electrode spacing d; Increase with homopolarity needle point body distance s increases, and when s 〉=40mm, I is almost constant; D is bigger to the spark-over voltage influence, and a is less to its influence.
Embodiment 2
Spininess point body is optimized spininess point body bipolar corona discharge electrode spacing.High-pressure side and ground end are equidistant distribution 10 needle point bodies in a straight line.Add 16kV positive direct-current high pressure at high-pressure side, measure different adjacent needle point body distance s and the discharge current under the electrode spacing d, calculate discharge energy density.It is totally on a declining curve with the increase of needle point body spacing to obtain discharge energy density, and adjacent needle point body spacing discharge energy density when 12 arrive 22mm changes little.Consider that discharge stability and discharge energy density are bigger, the adjacent needle point body distance s that is optimized is 20mm.Discharge energy density descends with the increase of electrode spacing; When electrode spacing d is about 32mm, but discharge has maximum injecting power density.
Claims (2)
1, needle-array electrode double-pole corona discharge assembly, by electric control unit, high-voltage DC power supply, high pressure access interface (1), electrode plate with high voltage (2), ground electrode plate (3) and earthing pole (4) are formed, it is characterized in that, electrode plate with high voltage (2) adopts identical pin array structure with ground electrode plate (3), promptly on battery lead plate, be welded with 2-58 row, the needle point body of every row 2-50 root, needle point body on the battery lead plate is orderly arrangement, spacing between the needle point body is in 15-30mm, needle point height degree is 5-7mm, the spacing of the needle point body on electrode plate with high voltage (2) and the ground electrode plate (3) is at 15-40mm, high pressure access interface (1) is connected with high-voltage DC power supply, and pin battery lead plate (3) in array is connected with earthing pole (4).
2, needle-array electrode double-pole corona discharge assembly according to claim 1 is characterized in that, electrode plate with high voltage (2) and ground electrode plate (3) adopt stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100477764A CN100560215C (en) | 2006-09-13 | 2006-09-13 | Needle-array electrode double-pole corona discharge assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100477764A CN100560215C (en) | 2006-09-13 | 2006-09-13 | Needle-array electrode double-pole corona discharge assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1919465A true CN1919465A (en) | 2007-02-28 |
| CN100560215C CN100560215C (en) | 2009-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006100477764A Expired - Fee Related CN100560215C (en) | 2006-09-13 | 2006-09-13 | Needle-array electrode double-pole corona discharge assembly |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105921007A (en) * | 2016-05-06 | 2016-09-07 | 张家港市艾尔环保设备有限公司 | Organic waste gas purifying device and method |
-
2006
- 2006-09-13 CN CNB2006100477764A patent/CN100560215C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105921007A (en) * | 2016-05-06 | 2016-09-07 | 张家港市艾尔环保设备有限公司 | Organic waste gas purifying device and method |
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| Publication number | Publication date |
|---|---|
| CN100560215C (en) | 2009-11-18 |
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Owner name: AEROSPACE COMMUNICATIONS HOLDINGS CO., LTD. Free format text: FORMER OWNER: DALIAN MARTITIME AFFAIRS UNIV. Effective date: 20110914 |
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Effective date of registration: 20110914 Address after: 310009 No. 138, Jiefang Road, Zhejiang, Hangzhou Patentee after: Aerospace Communications Holdings Co., Ltd. Address before: 116026 Dalian, Liaoning Ling Road, No. 1 Patentee before: Dalian Maritime University |
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