CN203803654U - Particle charge amount measurement device - Google Patents
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- CN203803654U CN203803654U CN201320871519.8U CN201320871519U CN203803654U CN 203803654 U CN203803654 U CN 203803654U CN 201320871519 U CN201320871519 U CN 201320871519U CN 203803654 U CN203803654 U CN 203803654U
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- 239000002245 particle Substances 0.000 title claims abstract description 89
- 238000005259 measurement Methods 0.000 title claims abstract description 19
- 230000007246 mechanism Effects 0.000 claims abstract description 19
- 229910001220 stainless steel Inorganic materials 0.000 claims description 20
- 239000010935 stainless steel Substances 0.000 claims description 19
- 239000011521 glass Substances 0.000 claims description 16
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 238000007689 inspection Methods 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 2
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- 230000003068 static effect Effects 0.000 abstract description 6
- 238000013461 design Methods 0.000 abstract description 5
- 238000011160 research Methods 0.000 abstract description 3
- 239000003517 fume Substances 0.000 abstract description 2
- 239000003245 coal Substances 0.000 abstract 1
- 239000000446 fuel Substances 0.000 abstract 1
- 230000005684 electric field Effects 0.000 description 13
- 239000012717 electrostatic precipitator Substances 0.000 description 9
- 239000003795 chemical substances by application Substances 0.000 description 7
- 229920005479 Lucite® Polymers 0.000 description 6
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- 239000000463 material Substances 0.000 description 6
- 239000004926 polymethyl methacrylate Substances 0.000 description 6
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- -1 polytetrafluoroethylene Polymers 0.000 description 3
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- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000005367 electrostatic precipitation Methods 0.000 description 2
- 239000003500 flue dust Substances 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
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- 238000012360 testing method Methods 0.000 description 2
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- 238000000926 separation method Methods 0.000 description 1
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Abstract
The utility model relates to a particle charge amount measurement device, which comprises a gas cylinder, a particle generator, a charge apparatus, a detector and an induced draft fan which are connected in sequence, wherein a first flow meter is arranged between the gas cylinder and the particle generator, and a second flow meter is arranged between the detector and the induced draft fan; the charge apparatus is arranged at the left end of the detector, and the right end of the detector is communicated with the induced draft fan via a pipeline; the charge apparatus is connected with a high-voltage power supply of the charge apparatus through a first wire, and the detector is connected with the high-voltage power supply of the detector via a second wire. The particle charge amount measurement device is simple in structure and reasonable in design, can accurately measure the charge amount of each particle in a static deduster, and the charge mechanism of the particles in the static deduster is researched; the design and research of a static dedusting system are facilitated, so that the dedusting efficiency of the static deduster is improved, and the emission of particles in the fume of fuel coal is effectively controlled.
Description
Technical field
The utility model relates to a kind of carrying capacity measurement mechanism, specifically relates to a kind of particle carrying capacity measurement mechanism, belongs to field of environment protection.
Background technology
Along with industrial expansion, the current atmosphere polluting problem of China is day by day serious, and pollutant is increasing, and wherein solid particulate matter content accounts for the first place of China's atmosphere pollution, and its concentration is to weigh an important symbol of atmospheric pollution level.The main source of China's Atmospheric particulates is the volume of smoke of coal-burning power plant discharge, and these flue dust all belong to substantially to the great pellet PM10 of human health damage and PM2.5, and this problem has caused the extensive concern of national all circles.Coal-burning power plant is one of main source of China PM2.5, and the smoke discharge amount of China coal-burning power plant accounts for 50% of national industrial fumes discharge capacity, and in the flue dust of coal-burning power plant's discharge, the ratio of PM2.5 is greater than 50% mostly.
In prior art, adopting electrostatic precipitator to administer Atmospheric particulates is a kind of methods of comparatively commonly using, the efficiency of dust collection of electrostatic precipitator in coal-burning power plant's application can reach 99.99%, yet its particulate removal effect to submicron order is not ideal enough, and total removal efficiency is less than 50%.
Particle charged process in electrostatic precipitator is mainly divided into electric-field charge and two kinds of situations of diffusional charging, and electric-field charge is that anion is injected in the much bigger dust granules of volume and made it charged under the effect of electric field force; Diffusional charging is that ion is done irregular fever motion and made it charged with dust granules collision.The carrying capacity of particle has directly affected its stressing conditions and dust collection effect, therefore, for different-grain diameter charging particle amount, measure accurately, contribute to electrostatic precipitation system to carry out design and researchp, thereby improve electrostatic precipitator efficiency of dust collection, effectively control the discharge of coal-fired flue-gas particle.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of particle carrying capacity measurement mechanism, and this device can accurately measure the carrying capacity of each single particle in electrostatic precipitator, thus the charging mechanism of research electrostatic precipitator particle.
The technical solution adopted in the utility model is:
A kind of particle carrying capacity measurement mechanism, described device comprises gas cylinder, particle generating means, charge electric appliance, detector and the air-introduced machine connecting in turn, between described gas cylinder and particle generating means, be provided with first flow meter, between detector and air-introduced machine, be provided with the second flowmeter; Described charge electric appliance is arranged on detector left end, and detector right-hand member is communicated with air-introduced machine by pipeline; Described charge electric appliance is connected with charge electric appliance high voltage source by the first wire, and detector is connected with detector high voltage source by the second wire.
Preferably, charge electric appliance middle part, charge electric appliance lower end, homogenizing plate and discharge electrode that described charge electric appliance comprises charge electric appliance upper end, charge electric appliance earthing pole, consists of, be threaded connection and form charge electric appliance body between charge electric appliance upper end, the charge electric appliance middle part consisting of charge electric appliance earthing pole, charge electric appliance lower end; Homogenizing plate is laid in the groove between charge electric appliance upper end and charge electric appliance earthing pole, and discharge electrode is fixedly connected with homogenizing plate, and discharge electrode is connected with charge electric appliance high voltage source by the first wire; Top, described charge electric appliance upper end is provided with airflow inlet, and charge electric appliance lower end bottom level direction is provided with air stream outlet.
Preferably, described detector comprises detector body, detector top crown and detector bottom crown, detector top crown and detector bottom crown respectively with the clamping of detector inner body wall; Detector top crown is connected with detector high voltage source by the second wire, and detector bottom crown is by wire ground connection.
Preferably, described detector bottom crown comprises stainless steel housing and electro-conductive glass sheet, and described electro-conductive glass sheet is laid in formation rectangle pole plate in stainless steel framework successively side by side; Described rectangle polar plate area equates with detector top crown area, described detector top crown employing stainless steel, and its shape is rectangle.In order to detect the particle of collecting by light microscope, the special conductive glass plate being stitched together that uses replaces conventional corrosion resistant plate, and stainless steel housing plays fastening glass panels and promotes that electric current acts on uniformly.
Preferably, the agent structure of described charge electric appliance body is hollow cylinder, and its top, charge electric appliance upper end tapers to cylinder that internal diameter is less than agent structure as airflow inlet; Its top, charge electric appliance lower end is with square cover plate, and the hollow cuboid that bottom, charge electric appliance lower end flaring is arranged horizontally is as air stream outlet, and air stream outlet area equates with the agent structure hollow cavity area of a circle.On square cover plate, being processed with flange is connected with detector body; Horizontally disposed hollow cuboid, as air stream outlet, keeps cuboid air stream outlet area to equate with the hollow cavity area of a circle.
Preferably, be evenly laid with several current-sharing circular holes on described homogenizing plate, homogenizing plate center is provided with for the fixing center hole of discharge electrode; Described discharge electrode upper end threading, is fixed on homogenizing plate central authorities by nut, and lower end is suspended on charge electric appliance earthing pole central authorities.
Preferably, described detector body is rectangle, its left end is connected with the square cover plate of charge electric appliance lower end by protruding flange, and detector right-hand member tapers to the cylinder that internal diameter is less than detector body and exports as detector, and described detector outlet is connected with air-introduced machine by pipeline; Described the second flowmeter is arranged on the pipeline between detector outlet and air-introduced machine.
Preferably, described particle generating means is particle generator, automatic sampling apparatus or blowing-type particle generator; Described charge electric appliance high voltage source is high-voltage DC power supply, the pulse power or high frequency electric source, and described detector high voltage source is negative dc high voltage power supply.
Charge electric appliance upper end adopts insulating materials, as insulation materials such as polytetrafluoroethylene (PTFE), lucite, potteries.Charge electric appliance upper end external apertures is used for through the first wire (high-tension bus-bar), and inside has the fixedly groove of homogenizing plate, and bottom is processed with internal thread; Charge electric appliance earthing pole (charge electric appliance middle part) adopts stainless steel, and its upper and lower two ends are processed with the external screw thread that connects use; Charge electric appliance lower end is processed with internal thread; Charge electric appliance earthing pole is connected with the screw-internal thread fit of charge electric appliance upper and lower end by the external screw thread at two ends.Charge electric appliance upper end, charge electric appliance earthing pole and charge electric appliance lower end three parts are threaded connection, and after connecting, its interior cylindrical cavity diameter is identical, the charge electric appliance body that formation agent structure is hollow cylinder.The hollow cavity area of a circle of agent structure equates with the air stream outlet area in the horizontal direction of charge electric appliance lower end, thereby guarantees that in charge electric appliance, air-flow velocity is constant.
Described homogenizing plate adopts the insulation materials such as polytetrafluoroethylene (PTFE), lucite, pottery; Described discharge electrode adopts stainless steel, for cylindrical structural, discharge electrode upper end threading, by nut, be fixed on homogenizing plate central authorities, lower end is suspended on earthing pole central authorities, discharge electrode upper end connects negative high voltage dc source by the first wire simultaneously, thereby makes grain flow charged by corona discharge.The air stream outlet of charge electric appliance lower end adopts lucite material, and its top is the hollow cylinder that has square cover plate, and the central upper portion position of this hollow cylinder is processed with internal thread and is connected with arrester stage, is processed with flange and is connected with detector body on square cover plate; The hollow cuboid that bottom flaring is arranged horizontally, as air stream outlet, keeps air stream outlet area to equate with the hollow cavity area of a circle of top hollow cylinder.
Detector body adopts lucite material, and integral body is rectangle, for guiding air flow direction in detector; Detector top crown adopts stainless steel, offers porosely for through the second wire on detector body, and detector top crown, by the second wire connection detector high voltage source, produces uniform electric field together for the detector bottom crown with parallel; Detector bottom crown adopts stainless steel housing, and holddown groove is carved with in frame inside, in order to fixing electro-conductive glass sheet; Detector bottom crown ground connection, not only for producing uniform electric field with detector top crown, simultaneously also for the collection of particle, to reach the object that adopts and detect.Detector top crown and detector bottom crown respectively with the clamping of detector inner body wall, be convenient to the replacing of the upper and lower pole plate of detector.
Described air-introduced machine is used so that detector is interior and is produced even air stream, thereby the grain flow and the air velocity that in charge electric appliance, flow out are consistent, thereby relatively static.
Described gas cylinder can be for conventional compressed gas cylinder, and for providing air-flow, air-flow enters after mixing with particle and in charge electric appliance, makes charging particle; Can adopt air gas cylinder, it also can be used for regulating atmosphere and humidity etc.
Preferably, described detector outside is also provided with PIV Systems for optical inspection.Can take adding the movement of particles between two pole plates in survey device, more directly perceived, shooting results is processed and is analyzed the results such as average carrying capacity that also can directly obtain grain flow.
Particle carrying capacity measurement mechanism of the present utility model, particle enters charge electric appliance with malleation air-flow from charge electric appliance airflow inlet, charged in corona zone, charge electric appliance middle part, then enters in the uniform electric field of detector by the air stream outlet of charge electric appliance lower end; Particle carries out uniform motion in uniform electric field, and finally by detector bottom crown, is collected; In testing process, by regulating air-introduced machine air quantity, air-flow velocity in detector is equated with charge electric appliance air stream outlet flow velocity, thereby do not affect the uniform motion of particle in air-flow.Finally, by taking out the electro-conductive glass sheet in detector bottom crown, the position falling with observation by light microscope particle and granular size, and by particle force analysis, obtain particle level move distance, calculate each charging particle amount.
The utility model is simple in structure, reasonable in design, can accurately measure the carrying capacity of each single particle in electrostatic precipitator, thus the charging mechanism of research electrostatic precipitator particle; Contribute to electrostatic precipitation system to carry out design and researchp, thereby improve electrostatic precipitator efficiency of dust collection, effectively control the discharge of coal-fired flue-gas particle.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of the utility model charge electric appliance;
Fig. 3 is the structural representation of the utility model detector bottom crown;
Fig. 4 is the structural representation of the utility model charge electric appliance lower end;
1. detector body 2. detector bottom crown 3. detectors export hollow cylinder 24. first flow meter 25. second flowmeters that 4. air-introduced machine 5. detector top crown 6. detector high voltage source 7. charge electric appliance high voltage source 8. charge electric appliance upper end 9. homogenizing plate 10. charge electric appliance discharge electrode 11. charge electric appliance earthing pole 12. charge electric appliance lower end square cover plate 21. first wire 22. second wires 23. of 13. particle generating means 14. gas cylinder 15. airflow inlet 16. air stream outlet 17. groove 18. stainless steel housing 19. electro-conductive glass sheet 20. have square cover plate.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, should be appreciated that specific embodiment described herein is only for description and interpretation the utility model, and be not used in restriction the utility model.
With reference to Fig. 1～4, a kind of particle carrying capacity measurement mechanism, comprise the gas cylinder 14, particle generating means 13, charge electric appliance, detector and the air-introduced machine 4 that connect in turn, between described gas cylinder 14 and particle generating means 13, be provided with first flow meter 24, between detector and air-introduced machine 4, be provided with the second flowmeter 25; Described charge electric appliance is arranged on detector left end, and detector right-hand member is communicated with air-introduced machine by pipeline; Described charge electric appliance is connected with charge electric appliance high voltage source 7 by the first wire 21, and detector is connected with detector high voltage source 6 by the second wire 22.
Charge electric appliance middle part, charge electric appliance lower end 12, homogenizing plate 9 and discharge electrode 10 that charge electric appliance comprises charge electric appliance upper end 8, charge electric appliance earthing pole 11, consists of, be threaded connection and form charge electric appliance body between charge electric appliance upper end 8, the charge electric appliance middle part consisting of charge electric appliance earthing pole 11, charge electric appliance lower end 12; Homogenizing plate 9 is laid in the groove 17 between charge electric appliance upper end 8 and charge electric appliance earthing pole 11, and discharge electrode 10 is fixedly connected with homogenizing plate 9, and discharge electrode 10 is connected with charge electric appliance high voltage source 7 by the first wire 21; 8 tops, described charge electric appliance upper end are provided with airflow inlet 15, and charge electric appliance lower end 12 bottom level directions are provided with air stream outlet 16.
Charge electric appliance upper end 8 adopts polytetrafluoroethylmaterial material, and charge electric appliance upper end 8 external apertures are used for through the first wire (high-tension bus-bar), and inside has the fixedly groove 17 of homogenizing plate, and bottom is processed with internal thread; Charge electric appliance earthing pole 11(charge electric appliance middle part) adopt stainless steel, its upper and lower two ends are processed with the external screw thread that connects use; Charge electric appliance lower end 12 is processed with internal thread; Charge electric appliance earthing pole 11 is connected with the screw-internal thread fit of charge electric appliance upper and lower end by the external screw thread at two ends.Charge electric appliance upper end 8, charge electric appliance earthing pole 11 and charge electric appliance lower end 12 3 parts are threaded connection, and after connecting, its interior cylindrical cavity diameter is identical, the charge electric appliance body that formation agent structure is hollow cylinder.
Homogenizing plate 9 adopts polytetrafluoroethylene (PTFE) materials, is evenly laid with several current-sharing circular holes on described homogenizing plate, and homogenizing plate center is provided with for the fixing center hole of discharge electrode; Described discharge electrode 10 adopts stainless steel, for cylindrical structural, discharge electrode 10 upper end threadings, by nut, be fixed in the center hole of homogenizing plate 9, lower end is suspended on charge electric appliance earthing pole 11 central authorities, discharge electrode 10 upper ends connect negative high voltage dc source by the first wire 21 simultaneously, thereby make grain flow charged by corona discharge.The air stream outlet 16 of charge electric appliance lower end 12 adopts lucite material, its top is the hollow cylinder 23 that has square cover plate 20, the central upper portion position of this hollow cylinder 23 is processed with internal thread and is connected with arrester stage 10, is processed with flange and is connected with detector body 1 on square cover plate 20; The hollow cuboid that bottom flaring is arranged horizontally, as air stream outlet 16, keeps air stream outlet 16 areas to equate with the hollow cavity area of a circle of top hollow cylinder, thereby guarantees that in charge electric appliance, air-flow velocity is constant.
Detector comprises detector body 1, detector top crown 5 and detector bottom crown 2, detector top crown 5 and detector bottom crown 2 respectively with the 1 inwall clamping of detector body; Detector top crown 5 is connected with detector high voltage source 6 by the second wire 22, and detector bottom crown 2 is by wire ground connection.
Detector bottom crown 2 comprises stainless steel housing 18 and electro-conductive glass sheet 19, and described electro-conductive glass sheet 19 is laid in the interior formation rectangle of stainless steel housing 18 pole plate successively side by side; Described rectangle polar plate area equates with detector top crown 5 areas.
Detector body 1 adopts lucite material, and integral body is rectangle, for guiding air flow direction in detector; Detector top crown 5 adopts stainless steels, offers porosely for through the second wire 22 on detector body 1, and detector top crown 5, by the second wire connection detector high voltage source 6, produces uniform electric field together for the detector bottom crown with parallel; Detector bottom crown 2 adopts stainless steel housings 18, and holddown groove is carved with in frame inside, in order to fixing electro-conductive glass sheet 19; Detector bottom crown 2 ground connection, not only for producing uniform electric fields with detector top crown 5, simultaneously also for the collection of particle, to reach the object that adopts and detect.Detector top crown 5 and detector bottom crown 2 respectively with the 1 inwall clamping of detector body, be convenient to the replacing of the upper and lower pole plate of detector.
Detector body 1 left end is connected with the square cover plate 20 of charge electric appliance by protruding flange, and detector body 1 right-hand member tapers to the cylinder that internal diameter is less than detector body and exports 3 as detector, and described detector exports 3 and is connected with air-introduced machine 4 by pipeline; Described the second flowmeter 25 is arranged on the pipeline between detector outlet 3 and air-introduced machine 4.
Particle generating means is blowing-type particle generator; Described charge electric appliance high voltage source is high-voltage DC power supply, and described detector high voltage source is negative dc high voltage power supply.Air-introduced machine is used so that detector is interior and is produced even air stream, thereby the grain flow and the air velocity that in charge electric appliance, flow out are consistent, thereby relatively static.Gas cylinder can be for conventional compressed gas cylinder, and for providing air-flow, air-flow enters after mixing with particle and in charge electric appliance, makes charging particle; Also can adopt air gas cylinder, except also can be used for regulating atmosphere and humidity etc. for providing air-flow.
Air-flow provides from gas cylinder 14; by being mixed and fed into charge electric appliance with fine grained after flowmeter coutroi velocity in particle generating means 13; charge electric appliance connects high-voltage DC power supply 7; by the corona discharge between discharge electrode 10 and charge electric appliance earthing pole 11, undertaken chargedly, then from air stream outlet 16 horizontal movements of charge electric appliance lower end 12 horizontal directions, enter detector.Detector top crown 5 connects negative dc source 6, and detector top crown 5 forms uniform electric field with detector bottom crown 2.Particle enters directed movement after uniform electric field, vary in size or movement of particles track that carried charge is different different, thereby particle separation drop to the diverse location of charge electric appliance bottom crown 2.By microscopic examination particle position and granular size, obtain particle level move distance, thereby calculate charging particle amount.In testing process, detector, by regulating the air quantity of air-introduced machine 4, makes air-flow velocity in detector equate with charge electric appliance air stream outlet flow velocity, thereby does not affect the uniform motion of particle in air-flow.
As shown in Figure 2, Figure 4 shows, charge electric appliance upper end 8, charge electric appliance earthing pole 11 and charge electric appliance lower end 12 3 parts are threaded connection, after connecting, cylindrical cavity diameter is identical in it, and cavity cross-sectional area equates with charge electric appliance lower end air stream outlet rectangular area, thereby the interior air-flow velocity of assurance charge electric appliance is constant.In the interior cylindrical cavity of charge electric appliance earthing pole 11 and charge electric appliance upper end 8, leave the space that is slightly larger than cylindrical cavity and form groove 17, for placing and fixing homogenizing plate 9.
As shown in Figure 3, detector bottom crown 2 is comprised of stainless steel housing and electro-conductive glass sheet.In order to detect the ash particle of collecting by light microscope, the special conductive glass plate being stitched together that uses replaces conventional corrosion resistant plate; Stainless steel housing plays fastening glass panels and promotes that electric current acts on uniformly.
In addition, also can increase in actual use PIV Systems for optical inspection and observe the movement locus of particle in detector.Can take adding the movement of particles between two pole plates in survey device, more directly perceived, shooting results is processed and is analyzed the results such as average carrying capacity that also can directly obtain grain flow.
The utility model device is used for measuring particle carrying capacity, specifically comprises the steps:
(1) air-flow of gas cylinder 14 output by first flow meter 24 coutroi velocities after, in particle generating means 13, enter in charge electric appliance with the mixed merga pass airflow inlet 15 of particle;
(2) particle that enters charge electric appliance by the corona discharge between discharge electrode 10 and charge electric appliance earthing pole 11 carry out charged after, from air stream outlet 16 horizontal movements, enter detector; Wherein, air stream outlet area equates with the charge electric appliance agent structure hollow cavity area of a circle;
(3) particle enters after detector, carries out directed movement, and drop to the diverse location of charge electric appliance bottom crown 2 under the uniform electric field effect producing between detector top crown 5 and detector bottom crown 2; Wherein, by the second flowmeter 25, regulate the air quantity of air-introduced machine 4, keep air-flow velocity in detector to equate with charge electric appliance air stream outlet flow velocity;
(4) take out the electro-conductive glass sheet 19 in detector bottom crown 2, the position falling with observation by light microscope particle and granular size, and by particle force analysis, obtain particle level move distance, calculate each charging particle amount.
Electric field force: F
e=Eq=Uq/h;
Viscous force: F
η=6 π dp μ ω/Cm;
When detecting utmost point two-plate layout perpendicular to the ground, particle is stress balance in detector: F
e=F
η;
Migration velocity ω=Eq/ (3 π d μ);
Can obtain by experiment the movement of particles time: t=L/V
0=h/ ω;
, ω=h*V
0/ L;
So the computing formula that can obtain charging particle amount is: q=3 π dph2 μ/(UL).
In above-mentioned formula, E is electric-field intensity, and q is charging particle amount, and h is Detection electrode spacing, and μ is dynamic viscosity, and dp is grain diameter, and Cm is constant, in 1, L, is particle level direction move distance, V
0for particle level direction flow velocity, i.e. primary air flow velocity, U is for detecting pole tension.
If when two Detection electrodes and ground level are arranged, particle stress balance is F
e+ mg=F
η, need to consider Action of Gravity Field.
Claims (9)
1. a particle carrying capacity measurement mechanism, it is characterized in that: described device comprises gas cylinder, particle generating means, charge electric appliance, detector and the air-introduced machine connecting in turn, between described gas cylinder and particle generating means, be provided with first flow meter, between detector and air-introduced machine, be provided with the second flowmeter; Described charge electric appliance is arranged on detector left end, and detector right-hand member is communicated with air-introduced machine by pipeline; Described charge electric appliance is connected with charge electric appliance high voltage source by the first wire, and detector is connected with detector high voltage source by the second wire.
2. particle carrying capacity measurement mechanism according to claim 1, it is characterized in that: charge electric appliance middle part, charge electric appliance lower end, homogenizing plate and discharge electrode that described charge electric appliance comprises charge electric appliance upper end, charge electric appliance earthing pole, consists of, be threaded connection and form charge electric appliance body between charge electric appliance upper end, the charge electric appliance middle part consisting of charge electric appliance earthing pole, charge electric appliance lower end; Homogenizing plate is laid in the groove between charge electric appliance upper end and charge electric appliance earthing pole, and discharge electrode is fixedly connected with homogenizing plate, and discharge electrode is connected with charge electric appliance high voltage source by the first wire; Top, described charge electric appliance upper end is provided with airflow inlet, and charge electric appliance lower end bottom level direction is provided with air stream outlet.
3. particle carrying capacity measurement mechanism according to claim 2, is characterized in that: described detector comprises detector body, detector top crown and detector bottom crown, detector top crown and detector bottom crown respectively with the clamping of detector inner body wall; Detector top crown is connected with detector high voltage source by the second wire, and detector bottom crown is by wire ground connection.
4. particle carrying capacity measurement mechanism according to claim 3, is characterized in that: described detector bottom crown comprises stainless steel housing and electro-conductive glass sheet, and described electro-conductive glass sheet is laid in formation rectangle pole plate in stainless steel housing successively side by side; Described rectangle polar plate area equates with detector top crown area, described detector top crown employing stainless steel, and its shape is rectangle.
5. particle carrying capacity measurement mechanism according to claim 3, is characterized in that: the agent structure of described charge electric appliance body is hollow cylinder, and its top, charge electric appliance upper end tapers to cylinder that internal diameter is less than agent structure as airflow inlet; Its top, charge electric appliance lower end is with square cover plate, and the hollow cuboid that bottom, charge electric appliance lower end flaring is arranged horizontally is as air stream outlet, and air stream outlet area equates with the agent structure hollow cavity area of a circle.
6. particle carrying capacity measurement mechanism according to claim 3, is characterized in that: on described homogenizing plate, be evenly laid with several current-sharing circular holes, homogenizing plate center is provided with for the fixing center hole of discharge electrode; Described discharge electrode upper end threading, is fixed on homogenizing plate central authorities by nut, and lower end is suspended on charge electric appliance earthing pole central authorities.
7. particle carrying capacity measurement mechanism according to claim 5, it is characterized in that: described detector body is rectangle, its left end is connected with the square cover plate of charge electric appliance lower end by protruding flange, detector right-hand member tapers to the cylinder that internal diameter is less than detector body and exports as detector, and described detector outlet is connected with air-introduced machine by pipeline; Described the second flowmeter is arranged on the pipeline between detector outlet and air-introduced machine.
8. particle carrying capacity measurement mechanism according to claim 1, is characterized in that: described particle generating means is particle generator, automatic sampling apparatus or blowing-type particle generator; Described charge electric appliance high voltage source is high-voltage DC power supply, the pulse power or high frequency electric source, and described detector high voltage source is negative dc high voltage power supply.
9. particle carrying capacity measurement mechanism according to claim 1, is characterized in that: described detector outside is also provided with PIV Systems for optical inspection.
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| CN201320871519.8U CN203803654U (en) | 2013-12-27 | 2013-12-27 | Particle charge amount measurement device |
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| CN201320871519.8U CN203803654U (en) | 2013-12-27 | 2013-12-27 | Particle charge amount measurement device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103752410A (en) * | 2013-12-27 | 2014-04-30 | 浙江大学 | Particulate matter electricity carrying capacity measurement device and method |
| CN106950438A (en) * | 2017-04-28 | 2017-07-14 | 中国科学院地球化学研究所 | Contactless Space Particle measuring device with electricity and method |
| CN109507068A (en) * | 2018-11-01 | 2019-03-22 | 西安交通大学 | A kind of charged amount detecting device of particulate matter and detection method |
| CN110470922A (en) * | 2019-08-28 | 2019-11-19 | 西南交通大学 | Insulating materials surface charge detection device and its control method under high-speed flow environment |
-
2013
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103752410A (en) * | 2013-12-27 | 2014-04-30 | 浙江大学 | Particulate matter electricity carrying capacity measurement device and method |
| CN103752410B (en) * | 2013-12-27 | 2017-02-15 | 浙江大学 | Particulate matter electricity carrying capacity measurement device and method |
| CN106950438A (en) * | 2017-04-28 | 2017-07-14 | 中国科学院地球化学研究所 | Contactless Space Particle measuring device with electricity and method |
| CN106950438B (en) * | 2017-04-28 | 2023-06-02 | 中国科学院地球化学研究所 | Non-contact space particle charged detection device and method |
| CN109507068A (en) * | 2018-11-01 | 2019-03-22 | 西安交通大学 | A kind of charged amount detecting device of particulate matter and detection method |
| CN110470922A (en) * | 2019-08-28 | 2019-11-19 | 西南交通大学 | Insulating materials surface charge detection device and its control method under high-speed flow environment |
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