CN206640854U - A kind of blending agent discharge-blocking device - Google Patents
A kind of blending agent discharge-blocking device Download PDFInfo
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- CN206640854U CN206640854U CN201720421919.7U CN201720421919U CN206640854U CN 206640854 U CN206640854 U CN 206640854U CN 201720421919 U CN201720421919 U CN 201720421919U CN 206640854 U CN206640854 U CN 206640854U
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Abstract
The utility model discloses a kind of blending agent discharge-blocking device.Described device includes ac high voltage source, dielectric layer uniform in material, metal electrode, wire and oscillograph.Metal electrode is attached to dielectric layer surface, and close adjacent media interlayer forms narrow discharge gap；By applying ac high-voltage in electrode tip, bulk phase media stop and creeping discharge can be made while betide same discharging gap.In addition the multi-channel discharge interstitial structure with high electric-field intensity can be established in electric discharge device by way of adding medium layer number in the electric discharge device.The utility model drastically increases capacity usage ratio compared with conventional media barrier discharge or creeping discharge, expands application, and its is compact-sized, easy to assembly flexibly, is easy to safeguard, is easy to amplification upgrading, has extremely strong practicality.
Description
Technical field
The utility model belongs to non-thermal discharge plasma technical field, more particularly to a kind of blending agent barrier discharge dress
Put.
Background technology
Bulk phase media barrier discharge can produce large area plasma region under atmospheric pressure with creeping discharge and electric discharge is equal
Even stabilization, electric discharge device is simple in construction, and dynamic response is fast, therefore in necks such as material surface processing, biomedical and environmental protection
Domain has broad application prospects.Usually, bulk phase media barrier discharge or creeping discharge are realized, need to be by dielectric (such as
Glass, ceramics and quartz etc.) it is placed between the high-field electrode and ground electrode being made up of sheet metal or palisade bonding jumper, using alternating current
The both ends that source connects high-field electrode and ground electrode by wire provide electric energy for it.
In gas gap micro discharge occurs for bulk phase media barrier discharge, forms plasma slab；And creeping discharge then can be in
Dielectric surface produces large area and uniform plasmasphere.Because both electric discharge devices can produce largely in region of discharge
Active specy (such as high energy electron, ion, free radical and excited state molecule), can effective activation processing flow through plasma slab
The gas in domain, this makes it above present big advantage in applications such as industrial waste gas purifying, environment deodorization and ozone synthesis.But
It is that the practical application of both discharge types is also mostly in conceptual phase at present, industrialization has been realized in only ozone synthesis, and i.e.
Make be ozone synthesis on application also by capacity usage ratio it is not high enough the problems such as perplexed.Solve problem above, discharged
Effective transfer of the Implantation Energy to electronics is should ensure that in journey, significantly improves electron temperature (the reflection electronic energy of discharge plasma
Amount) and electron density.This can ensure that plasma can provide enough high energy electrons and trigger or participate in chemistry with active specy
Reaction, reaches reaction target as early as possible；Also help and reduce thermal losses (such as dielectric loss) unnecessary in discharge process, improve
Discharging energy retrieval rate.
Patent CN01270102.5 discloses a kind of electric discharge device of multiple micro discharge collaboration one, and it is using in region of discharge
It is interior can simultaneous bulk phase media barrier discharge and creeping discharge, by increase injection high voltage electric energy come seek produce more
Strong plasma discharge, high electron density is obtained, to reach the purpose for improving discharging energy retrieval rate.However, the design
By limited using dielectric layer and structure design, electron temperature and electron density are not high enough in plasma, thus its discharge
Though capacity usage ratio, which is improved, is but far below theoretical value.In summary, it is low, complicated etc. to there is capacity usage ratio in prior art
Defect, and effectively can not be combined with dielectric barrier discharge and creeping discharge.
The content of the invention
In view of insufficient existing for prior art, the purpose of this utility model is to provide for one kind and increases substantially bulk phase media
Barrier discharge and the capacity usage ratio of creeping discharge and a kind of blending agent discharge-blocking device for significantly increasing its practicality,
It can be realized is coupled in same discharging gap by bulk phase media barrier discharge and/or creeping discharge, establishes high electric-field intensity, height
Electron density and compact-sized, easy to assembly.
To achieve these goals, technical solution of the present invention is as follows：
A kind of blending agent discharge-blocking device, it is characterised in that described device mainly includes：Medium uniform in material
Layer, metal electrode of the grating and thin sheet of metal electrode, wire, power supply and oscillograph；
The neat parallel arrangement mutually of dielectric layer described in N blocks, medium interlayer described in arbitrary neighborhood two form discharging gap and
Away from equal, wherein N≤3；
In the dielectric layer in addition to both ends, remaining N-2 block dielectric layer is referred to as middle dielectric layer, the middle dielectric layer
Upper and lower faces adhere to metal electrode of the grating, and each intermediate medium Rotating fields are completely the same；
Electrode on the dielectric layer of both ends has two kinds of distribution modes：
Mode one adheres to a thin sheet of metal electrode respectively for the outside of both ends dielectric layer, is now in same discharging gap
Metal electrode of the grating connection power supply same one end and the metal electrode of the grating connection power supply in the neighbouring discharge gap it is another
One end, and be now attached respectively to the thin sheet of metal electrode on the outside of the dielectric layer of both ends to be all connected with middle dielectric layer adjacent thereto close
The opposite power end of side metal electrode of the grating；
Mode two adheres to a metal electrode of the grating respectively for the interior survey of both ends dielectric layer, is now in same discharging gap
Metal electrode of the grating connection power supply same one end and the metal electrode of the grating connection power supply in the neighbouring discharge gap it is another
One end；
The oscillograph is parallel to both ends of power.
Further, as a preference of the present invention, the uniform dielectric layer of N stock materials is with leading with high-k
The high-purity alpha-alumina or zirconium oxide thin plate of hot coefficient, lamella thickness are 0.1~1.5mm.
Further, as a preference of the present invention, the adjacent media interlayer gap is 0.1~2mm.
Further, as a preference of the present invention, the thickness phase of the metal electrode of the grating and the thin sheet of metal electrode
Together, it is 0.01~1.5mm；Meanwhile the spacing of same gate-shaped electrode adjacent metal bar is identical, is 1~5mm；Bonding jumper is wide
Spend for 1~5mm.
Further, as a preference of the present invention, the upper and lower surface of the middle dielectric layer is equipped with metal electrode of the grating,
And cause corresponding on center line between the adjacent bonding jumper of any two of middle dielectric layer upper surface metal electrode of the grating
It is provided with a middle dielectric layer lower surface metal electrode of the grating bonding jumper.
Further, as a preference of the present invention, thin plate dielectric layer quantity is high electric in electric discharge device to increase among increase
Field intensity mixes discharge channel.
Further, as a preference of the present invention, power supply preferably uses the high frequency of power frequency or 100~2000Hz, voltage 3
~20kV ac high voltage source or pulsewidth is 1~10 μ s pulse powers.
Compared with prior art, beneficial effects of the present invention：
1st, the utility model apparatus structure is compact, energy density is high, and assembles flexibly and easily, is easy to promote；
2nd, 80~200Td Reduced field strength and 3~7eV average electron temperature can be established inside the utility model, shown
Write and improve capacity usage ratio and particularly suitable for triggering the chemical reaction being difficult under normal condition；
3rd, the utility model can obtain by bulk phase media barrier discharge and creeping discharge efficient coupling in same region of discharge
Up to 1019m-3Plasma electron density, plasma processing efficiency can be greatly improved；
4th, the discharging gap of the utility model design is narrow, and gas flow rate is big, helps to carry electric discharge heat energy, is subsequently grasped
Make, while dielectric layer excellent thermal conductivity, easily cooling, it can effectively alleviate the adverse effect that electric discharge heat is brought；
5th, the utility model only needs regular alternating current high voltage power supply to power, and assembling is simple, expands upgrading and easy to maintenance, Yi Shi
Existing its minimizes utility unit.
Brief description of the drawings
By the way that shown in accompanying drawing, above and other purpose of the invention, feature and advantage will become apparent from.In whole accompanying drawings
Identical reference instruction identical part.Deliberately accompanying drawing is not drawn by actual size equal proportion scaling, it is preferred that emphasis is aobvious
The purport of the present invention is shown.In addition, though the demonstration of the parameter comprising particular value can be provided herein, but parameter is without being definitely equal to
Corresponding value, but can be similar to be worth accordingly in acceptable error margin or design constraint.In addition, in following examples
The direction term mentioned, such as " on ", " under ", "left", "right", " interior ", " outer " etc., only it is the direction of refer to the attached drawing.Therefore, make
Direction term is intended to be illustrative and not intended to limit the present invention.
Fig. 1 is that the utility model embodiment 1 mixes discharging structure schematic diagram；
Fig. 2 is that the utility model embodiment 2 mixes discharging structure schematic diagram；
Fig. 3 is that the cylindrical shape of the utility model embodiment 3 mixes discharging structure schematic diagram；
Fig. 4 is the mixing electric discharge overall structure diagram of the utility model embodiment 1.
In figure：1st, top dielectric, 2, middle dielectric layer, 3, bottom dielectric layer, 4, top dielectric upper surface thin slice gold
Belong to electrode, 5, low side dielectric layer lower surface thin sheet of metal, 6, middle dielectric layer upper surface metal electrode of the grating, 7, middle dielectric layer
Lower surface metal electrode of the grating, 8, power supply, 9, oscillograph, 10, wire, 11, top dielectric lower surface metal electrode of the grating, 12
Bottom dielectric layer upper surface metal electrode of the grating, 13, outermost layer tubular dielectric layer, 14, middle tubular dielectric layer, 15, innermost layer
Tubular dielectric layer, 16, outermost layer tubular dielectric layer outer surface thin sheet of metal electrode, 17, innermost layer tubular dielectric layer inner surface it is thin
Piece metal electrode, 18, middle tubular dielectric layer outer surface metal electrode of the grating, 19, middle tubular dielectric layer inner surface palisade gold
Belong to electrode.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, the technical scheme in the embodiment of the utility model is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model part of the embodiment, rather than whole embodiments.Based on the implementation in the utility model
Example, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, is belonged to
The scope of the utility model protection.
Bulk phase media barrier discharge and creeping discharge are non-thermal discharge, the chemical reaction occurred in its plasma slab with
And the formation of active specy depends on the inelastic collision of high energy electron.Therefore, electron temperature is to judge with electron density
Discharge performance is good and bad, weighs the important parameter of discharge plasma capacity usage ratio and practicality height.Usually, electronics temperature
Degree increases with the increase of reduction electric-field intensity (E/n), and both are almost linear；The increase of reduction electric-field intensity is beneficial to
The electron temperature of discharge plasma is improved, capacity usage ratio can be greatly enhanced.Therefore can be strong by being established between discharge air-gap
Reduction electric field significantly improves the capacity usage ratio of discharge process.On the other hand, under the same terms, the electronics of discharge plasma
Density can directly be reflected in current density, illustrate that the current density in discharge process need to be increased to acquisition high electron density.It is logical
Cross and establish strong reduction electric field increase gas ionization degree and be no doubt advantageous to the increase of electron density and current density, and pass through mixing two
Kind electric discharge (bulk phase media barrier discharge and creeping discharge) is also increase strength of discharge in same discharging gap, improves discharge current
The effective means of density.In addition, discharge mode is mixed because having the characteristics of high current density and electron density, can be rapider
Thoroughly realize that target chemical reacts, it is practical.
Specific embodiment of the present utility model is described in further detail below in conjunction with the accompanying drawings.
Embodiment 1：
Fig. 1 show a kind of blending agent discharge-blocking device schematic diagram of the present utility model.Device preferably uses three pieces
Uniform alumina aluminium plate medium composition arranged in parallel；Each thickness of dielectric layers is 0.1~1.5mm, and per adjacent two dielectric layer
Between gas gap be 0.1~2mm.A thin sheet of metal electrode is adhered in the upper surface of top dielectric 1；Bottom thin plate dielectric layer
A thin sheet of metal electrode is also adhered in 3 lower surface；And a metal electrode of the grating is respectively adhered on the upper and lower surface of middle dielectric layer 2.Respectively
The thickness of metal electrode of the grating and thin sheet of metal electrode is 0.01~1.5mm, and each gate-shaped electrode strip width is 1~
5mm, the spacing of adjacent metal bar is 1~5mm.The adjacent gold of any two of middle dielectric layer upper surface metal electrode of the grating
A middle dielectric layer lower surface metal electrode of the grating bonding jumper is correspondingly arranged on center line between category bar.Put in same
Metal electrode of the grating in electric gap connects same one end of power supply and the metal electrode of the grating in neighbouring discharge gap connects
The other end of power supply, and be now attached respectively to the thin sheet of metal electrode on the outside of the dielectric layer of both ends and be all connected with being situated between among adjacent thereto
The opposite power end of the close side metal electrode of the grating of matter layer.In the present embodiment, the upper surface thin sheet of metal electricity of top dielectric 1
Pole 4 is all connected the high-pressure side of power supply 8 with middle dielectric layer lower surface metal electrode of the grating 7, and bottom thin plate dielectric layer lower surface
Thin sheet of metal electrode 5 and middle dielectric layer upper surface metal electrode of the grating 6 then together be grounded；Voltage exists in 3~20kV, frequency
100~2000Hz.The oscillograph 9 for being parallel to the both ends of power supply 8 is carried out online by wire 10 to the Current Voltage at reactor both ends
Monitoring.
Fig. 4 is mixing electric discharge overall structure diagram corresponding to embodiment 1, and oxygen is inputted from one end of device to device inside
Gas, after device acts on, by other end output ozone.
The invention is applied into ozone to synthesize to verify its excellent specific property.Ozone synthetic test with high-purity oxygen (>
99.999%) it is source of the gas, oxygen is after mass flow controller accurately controls metering in inflow discharge reactor；When oxygen flows through
It can occur to chemically react and generate ozone during plasma slab caused by mixing electric discharge；The concentration of ozone is synthesized by being placed in plasma
Ozone concentration detector on-line monitoring after body region of discharge.The ozone synthetic test uses voltage and the adjustable KHz of frequency
AC power energizes for the present invention；Discharge process is monitored on-line using oscillograph 9, and reduction electric-field intensity and electric discharge is calculated
Power.As a comparison, conventional creeping discharge reaction unit is also used for ozone synthetic test, and experiment is carried out under the same conditions
To ensure its comparativity.
Ozone synthetic test acquired results based on two kinds of electric discharge devices are as shown in Table 1.It can be seen that under the same terms, this hair
Reduction electric-field intensity, synthesis ozone concentration and the yield of ozone of bright mixing discharge reactor are about creeping discharge reactors
3 times, it means that the present invention significantly more efficient can will produce strong mixing electric discharge in energy injection to plasma slab, thus
Both energy dissipation (wasting on dielectric layer and electrode heating) had been avoided, so as to enhance electric-field intensity, has improved energy utilization
Rate；The electron temperature and electron density in ion plasma can be improved again, and then improve synthesis ozone concentration.In addition, pole of the present invention
The earth improves yield of ozone under high ozone concentration, and on the premise of pressure cooling is not carried out to reactor, this is clearly demarcated smelly
Oxygen synthetic effect is better than existing document report.
Embodiment 2：
Fig. 2 show another blending agent discharge-blocking device schematic diagram of the present utility model.Mix discharge reactor
Formed by three pieces of uniform alumina aluminium plate mediums are arranged in parallel；Thickness of dielectric layers is 0.1~1.5mm, and is situated between per adjacent two
The gas gap of matter interlayer is 0.1~2mm.A metal electrode of the grating 11 is adhered in the lower surface of top dielectric 1；Bottom medium
A metal electrode of the grating 12 is also adhered in the upper surface of layer 3；And the upper and lower surface of middle dielectric layer 2 respectively adheres to a metal electrode of the grating
6 and 7.The thickness of gate-shaped electrode used is 0.01~1.5mm, and strip width is 1~5mm, the spacing of adjacent metal bar
It is 1~5mm.On center line between the adjacent bonding jumper of any two of middle dielectric layer upper surface metal electrode of the grating
It is correspondingly arranged on a middle dielectric layer lower surface metal electrode of the grating bonding jumper.And top dielectric lower surface metal electrode of the grating
11 each bonding jumper center line spatially divides the adjacent metal for being placed in middle dielectric layer upper surface metal electrode of the grating 6 equally respectively
Bar；And each bonding jumper center line of bottom thin plate dielectric layer lower surface metal electrode of the grating 12 is spatially divided equally and is placed in centre respectively
The adjacent metal bar of dielectric layer lower surface metal electrode of the grating 7.The metal electrode of the grating being now in same discharging gap connects
Connect the other end of same one end of power supply and the metal electrode of the grating connection power supply in neighbouring discharge gap.In the present embodiment,
Middle dielectric layer upper surface metal electrode of the grating 6 is all connected the high pressure of power supply 8 with top dielectric lower surface metal electrode of the grating 11
End, middle dielectric layer lower surface metal electrode of the grating 7 and bottom dielectric layer upper surface gate-shaped electrode 12 then together be grounded；Voltage exists
3~20kV, frequency is in 100~2000Hz.It is connected in parallel on electric current of the oscillograph 9 of both ends of power by wire 10 to reactor both ends
Voltage is monitored on-line.
Using the superior function of the organic pollution formaldehyde treated verification experimental verification present invention.By the sky containing finite concentration formaldehyde
It is passed through after gas voltage stabilizing control flow in discharge reactor of the present invention；Flow through mixing region of discharge air in formaldehyde molecule with wait from
Active specy in daughter occurs chemical reaction and is decomposed；Formaldehyde in air behind plasma discharge region after detection process
Concentration.The experiment of this processing organic pollution formaldehyde is exoelectrical reaction using voltage and the adjustable KHz AC power of frequency
Device energizes；Discharge process is monitored on-line using oscillograph, and Reduced field strength and discharge power is calculated.To be more of the invention
Superiority, conventional creeping discharge reactor are also used for formaldehyde treated experiment, and experimental condition is same as above.
Table two is that two discharge reactor formaldehyde treateds test acquired results.Under the same terms, discharge reactor of the present invention
Reduction electric field will be far above conventional creeping discharge reactor, the high energy electron (high electron temperature) of the high concentration under strong reduction electric field
Effective inelastic collision occurs with formaldehyde molecule, directly excites dissociation formaldehyde molecule, makes its efficient degradation.Conventional creeping discharge
Because reduction electric-field intensity is weak, electron temperature is relatively low with electron density, therefore the difficult high methanal removing rate of acquisition.Identical injection work(
Under rate, the present invention possesses methanal removing ability far above conventional creeping discharge, this demonstrate that this have high electric-field intensity and
The high efficiency of the mixing discharge reactor energy utilization of high electron density.
Embodiment 3：
Fig. 3 is a kind of cylindrical shape blending agent discharge-blocking device schematic diagram of the present utility model, as the excellent of the present invention
Embodiment is selected, it is the further improvement carried out for embodiment 1.The device uses three uniform alumina aluminum barrel shape dielectric layers
Concentrically nested composition；Thickness of dielectric layers is 0.1~1.5mm, and ecto-entad successively decreases successively per adjacent tubular dielectric layer radius,
So that the gas gap of medium interlayer is 0.1~2mm.Thin sheet of metal electricity is adhered in the outer surface of outermost layer tubular dielectric layer 13
Pole 16；The inner surface of innermost layer tubular dielectric layer 15 also adheres to a thin sheet of metal electrode 17；And the two of middle tubular dielectric layer 14
A metal electrode of the grating 18 and 19 is respectively adhered in face.The outer surface metal electrode of the grating 18 of tubular dielectric layer 14 and middle Jie among wherein
The thickness of matter layer inner surface metal electrode of the grating 19 and outermost layer tubular dielectric layer outer surface thin sheet of metal electrode 16 is
0.01~1.5mm, each gate-shaped electrode strip width are 1~5mm, and the spacing of adjacent metal bar is 1~5mm, and middle
Each bonding jumper center line of tubular dielectric layer inner surface metal electrode of the grating 19 is divided equally respectively is placed in middle dielectric layer outer surface grid
Central angle corresponding to the adjacent metal bar of shape metal electrode 18.Outermost layer tubular dielectric layer outer surface thin sheet of metal electrode 16 is with
Between tubular dielectric layer inner surface metal electrode of the grating 19 all connect the high-pressure side of power supply 8, and innermost layer tubular dielectric layer inner surface is thin
Piece metal electrode 17 and middle tubular dielectric layer outer surface metal electrode of the grating 18 then together be grounded；Voltage is in 3~20kV, frequency
In 100~2000Hz.Oscillograph 9 is monitored on-line by wire 10 to the Current Voltage at reactor both ends.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, either which part or all technical characteristic are entered
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
The ozone compound experiment of table one contrasts
Table dicarbaldehyde removes Experimental comparison
Claims (6)
1. a kind of blending agent discharge-blocking device, it is characterised in that described device mainly includes：Dielectric layer uniform in material,
Metal electrode of the grating and thin sheet of metal electrode, wire, power supply and oscillograph；
Neat parallel arrangement, medium interlayer described in arbitrary neighborhood two form discharging gap and spacing phase to dielectric layer described in N blocks mutually
Deng wherein N≤3；
In the dielectric layer in addition to both ends, remaining N-2 block dielectric layer is referred to as middle dielectric layer, and the middle dielectric layer is upper and lower
Metal electrode of the grating is adhered on two sides, and each intermediate medium Rotating fields are completely the same；
Electrode on the dielectric layer of both ends has two kinds of distribution modes：
Mode one adheres to a thin sheet of metal electrode, the grid being now in same discharging gap respectively for the outside of both ends dielectric layer
Shape metal electrode connects the other end of same one end of power supply and the metal electrode of the grating connection power supply in neighbouring discharge gap,
And now it is attached respectively to the thin sheet of metal electrode on the outside of the dielectric layer of both ends and is all connected with the close side of middle dielectric layer adjacent thereto
The opposite power end of metal electrode of the grating；
Mode two adheres to a metal electrode of the grating respectively for the interior survey of both ends dielectric layer, the grid being now in same discharging gap
Shape metal electrode connects the other end of same one end of power supply and the metal electrode of the grating connection power supply in neighbouring discharge gap；
The oscillograph is parallel to both ends of power.
2. electric discharge device according to claim 1, it is characterised in that：The uniform dielectric layer of N stock materials is with height
The high-purity alpha-alumina or zirconium oxide thin plate of dielectric constant and thermal conductivity factor, lamella thickness are 0.1~1.5mm.
3. electric discharge device according to claim 1, it is characterised in that：The adjacent media interlayer gap is 0.1~2mm.
4. electric discharge device according to claim 1, it is characterised in that：The metal electrode of the grating and thin sheet of metal electricity
The thickness of pole is identical, is 0.01~1.5mm；Meanwhile the spacing of same gate-shaped electrode adjacent metal bar is identical, be 1~
5mm；Strip width is 1~5mm.
5. electric discharge device according to claim 1, it is characterised in that：The upper and lower surface of middle dielectric layer is equipped with grid
Shape metal electrode, and cause the center between the adjacent bonding jumper of any two of middle dielectric layer upper surface metal electrode of the grating
A middle dielectric layer lower surface metal electrode of the grating bonding jumper is correspondingly arranged on line.
6. electric discharge device according to claim 1 is characterized in that：Power supply is preferably using power frequency or 100~2000Hz height
Frequently the ac high voltage source or pulsewidth that, voltage is 3~20kV are 1~10 μ s pulse powers.
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| CN201720421919.7U CN206640854U (en) | 2017-04-20 | 2017-04-20 | A kind of blending agent discharge-blocking device |
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| CN106888544A (en) * | 2017-04-20 | 2017-06-23 | 大连海事大学 | A kind of blending agent discharge-blocking device |
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| CN106888544A (en) * | 2017-04-20 | 2017-06-23 | 大连海事大学 | A kind of blending agent discharge-blocking device |
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