CN200990473Y - Needle array electrode bipolar discharger - Google Patents
Needle array electrode bipolar discharger Download PDFInfo
- Publication number
- CN200990473Y CN200990473Y CNU200620093283XU CN200620093283U CN200990473Y CN 200990473 Y CN200990473 Y CN 200990473Y CN U200620093283X U CNU200620093283X U CN U200620093283XU CN 200620093283 U CN200620093283 U CN 200620093283U CN 200990473 Y CN200990473 Y CN 200990473Y
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- electrode plate
- high voltage
- electrode
- tips
- needle point
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Abstract
The utility model relates to a bipolar discharging device for tip array electrode, which belongs to technical field of low temperature plasm and pollution abatement. The device comprises an electric control unit, a high voltage DC power source, a high voltage access port, a high voltage electrode plate, an earth electrode plate and an earth electrode. The high voltage electrode plate and the earth electrode plate adopt similar tip array structure. The electrode plate is welded with 2 rows to 58 rows of tips with each row has 2 to 50 tips. The tips are orderly arrayed, and interval between two tips is 15 to 30 mm. Height of each tip is 5 to 7mm. Distance between tips of the high voltage electrode plate and that of the earth electrode plate is 15 to 40mm. The high voltage access port is connected with the high voltage DC power source. The tip array electrode plate is connected with the earth electrode. The utility model has wide application scope and can process reactors with different sizes according to the needs. The disposable cost for equipment is low, and energy utilization rate is high. Furthermore, the utility model has the advantages of low operating cost and convenient maintenance.
Description
Technical field
The utility model belongs to low temperature plasma and environmental pollution treatment technology field, particularly a kind of needle-array electrode double-pole electric discharge device.
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 utility model provides a kind of under room temperature, normal pressure, can the efficient needle-array electrode double-pole electric discharge device that moves steady in a long-term.
Know-why of the present utility model 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 utility model 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 earth electrode 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 earth electrode 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.
Effect of the present utility model and benefit are that employing pin array has improved the stability of discharge and the regeneration period of reactor to the bipolar discharge electrode structure of pin array.Can process 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 utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is a structural representation of the present utility model.
Among the figure: 1, high pressure access interface, 2, pin array high-field electrode, 3, pin electrode in array, 4, earth electrode.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
Spininess point body is to the research of spininess point body bipolar corona discharge voltage-current 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 voltage-current 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: discharging 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 discharging 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 (1)
1, a kind of needle-array electrode double-pole electric discharge device, 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 earth electrode (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 earth electrode (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200620093283XU CN200990473Y (en) | 2006-09-13 | 2006-09-13 | Needle array electrode bipolar discharger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200620093283XU CN200990473Y (en) | 2006-09-13 | 2006-09-13 | Needle array electrode bipolar discharger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200990473Y true CN200990473Y (en) | 2007-12-12 |
Family
ID=38941507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200620093283XU Expired - Lifetime CN200990473Y (en) | 2006-09-13 | 2006-09-13 | Needle array electrode bipolar discharger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200990473Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108856918A (en) * | 2017-05-11 | 2018-11-23 | 苏州含光微纳科技有限公司 | A kind of electric discharge machining method of the fine stepped groove of array |
-
2006
- 2006-09-13 CN CNU200620093283XU patent/CN200990473Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108856918A (en) * | 2017-05-11 | 2018-11-23 | 苏州含光微纳科技有限公司 | A kind of electric discharge machining method of the fine stepped groove of array |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20060913 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |