CN204799422U - High -voltage pulse power dust collector - Google Patents
High -voltage pulse power dust collector Download PDFInfo
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- CN204799422U CN204799422U CN201520474251.3U CN201520474251U CN204799422U CN 204799422 U CN204799422 U CN 204799422U CN 201520474251 U CN201520474251 U CN 201520474251U CN 204799422 U CN204799422 U CN 204799422U
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Abstract
The utility model provides a high -voltage pulse power dust collector, characterized by high -voltage pulse power supply circuit set up three -phase rectifier circuit, and inductance and electric capacity are connected to three -phase rectifier circuit's output, resistance and diode that the setting concatenated, then and connect trigger switch to constitute the trigger impulse circuit, trigger impulse circuit input end passes through the inductance and the electric capacity of resistance and capacitance connection three -phase rectifier circuit output, trigger impulse circuit output connection step up transformer. The utility model discloses an increasing the pulse of amplitude at direct current basis voltage superimposition, need not reforming transform former electrostatic precipitator's body part, do not influence normal production, the power supply technique is reliable, equipment normal operation, and matching nature is good, the high -voltage pulse power is than the power saving more of conventional DC power supply, and the power saving effect is obvious, having improved electrostatic precipitator's running behaviour greatly, having improved the efficiency of gathering dust, its gauge height that economizes on electricity is invested in for a short time.
Description
Technical field
The utility model belongs to a kind of electric dust collector, particularly a kind of high-voltage pulse power source dust arrester.
Background technology
At present, steel plant, cement plant, thermal power plant, chemical plant etc. have the enterprise of dust emission mostly to adopt electric cleaner process dedusting.Electric cleaner process dedusting utilizes highfield to make gas ionization, produces corona discharge, and then make dust charged, and under the effect of electric field force, the dust arrester that dust is separated from gas.Electric cleaner comparatively other dedusting method has many good qualities: can process large discharge gas and high temperature or corrosive gas, equipment mechanism is simple, high temperature resistant, and electric cleaner is more and more extensive in the application of process dedusting industry.
The dust be deposited on dust collecting pole of electric dust remover surface should have certain electric conductivity, could conduct the ion current from corona discharge to the earth.In general Elex precipitator, corona current must by the dust collecting pole plate of the dust layer conducting ground on pole plate.If when the ratio resistance of dust exceedes certain numerical value, then corona current will be restricted by dust layer, and this, by having influence on the change of the carrying capacity of powder dust particle, chargeability and electric-field intensity, if do not taken the necessary measures, will cause the decline of deduster efficiency of dust collection.Simultaneously because the adhesiveness of ratio resistance to dust of dust has a great impact, high specific resistance can cause the adhesiveness of dust to increase, can cause like this needing to improve deduster rapping intensity with the dust layer on clearing electrode, the secondary fly-up caused under normal circumstances also strengthens by this, eventually reduces deduster efficiency of dust collection.Because electric cleaner uses customary DC Power supply, customary DC Power supply easily produces inverse corona situation to high temperature high resistivity dusts such as power plant, and dust recovery rate can slowly reduce.So solve high specific resistance problem of gathering dust, improve ESP Efficiency, to expand its operation strategies be one of important subject.For high resistivity dust, problem is affected on ESP Efficiency, according to the concrete condition of producing, seek the electrostatic precipitation technology lowering dust high specific resistance.
Summary of the invention
The purpose of this utility model is to provide a kind of high-voltage pulse power source dust arrester, high direct voltage basis increases high voltage pulse power, when using silicon-controlled voltage regulation, supply voltage is discontinuous, pulse power supply can overcome galvanic shortcoming, be specially adapted to high temperature high resistivity dust, effectively improve and stabilize dust-collecting efficiency, and significantly can save electric energy.Do not need the body part transforming former electric cleaner, do not affect normal production, substantially improve the runnability of electric cleaner, improve dust-collecting efficiency, invest little.
The technical scheme that the utility model provides is as follows: high-voltage pulse electric source circuit arranges rectified three-phase circuit, and the output of rectified three-phase circuit connects inductance and electric capacity; Resistance and the diode of serial connection are set, then and connect trigger switch form trigger pulse circuit, trigger pulse circuit input is connected inductance and the electric capacity of rectified three-phase circuit output with electric capacity by resistance, trigger pulse circuit output connection step-up transformer.
Effect of the present utility model: the pulse power supply of electric cleaner is the pulse superposing amplitude on direct current basic voltage.Do not need the body part transforming former electric cleaner, do not affect normal production, high-voltage pulse power source power supply technique is reliable, equipment normal operation, and matching is good; High-voltage pulse power source is than the power saving more of customary DC power supply, and power saving effect is obvious; Substantially improve the runnability of electric cleaner, improve dust-collecting efficiency, dust emission concentration reduces about 50%, and its amount of electricity saving, up to 95%, is invested little.
Accompanying drawing explanation
Fig. 1 is rectifier circuit portion schematic diagram of the present utility model.
Fig. 2 is trigger pulse circuit and high-voltage output circuit partial schematic diagram.
Fig. 3 is the utility model and original system connection diagram.
Detailed description of the invention
See Fig. 1,2, circuit structure of the present utility model is as follows: high-voltage pulse electric source circuit arranges and connects and composes three-phase controlled rectification filter circuit by controllable silicon T1, T2, T3, T4, T5, T6, input is three-phase alternating-current supply 380V/50Hz, becomes highest amplitude to be the direct current of 600V through controlled rectification filter circuit.Three-phase controlled rectification filter circuit output connects inductance L and electric capacity C1; Resistance R2 and the diode D1 of serial connection are set, then also a K switch formation trigger pulse circuit is sent out in contact, trigger pulse circuit input is connected inductance L and the electric capacity C1 of three-phase controlled rectification filter circuit output by resistance R1 with electric capacity C2, trigger pulse circuit output connects step-up transformer T2.
Circuit theory: the three-phase alternating-current supply 380V/50Hz of civil power, exporting highest amplitude through controlled rectification filter circuit is the direct current of 600V; 600V direct current is modulated into pulsewidth and all adjustable action of low-voltage pulse of frequency through trigger pulse circuit; Then through transformer boost, form high-voltage pulse and export, see Fig. 3, the utility model high-voltage pulse power source circuit output end is in parallel with former DC output (HVDC), be superimposed upon in former basic high direct voltage, form existing basic voltage like this, have again pulse voltage to discharge.Rp, Cp shown in Fig. 3 is respectively equivalent resistance and the electric capacity of electrode, Ldc, D are respectively isolation inductance and high voltage silicon rectifier stack, because inductance does not have an impact to direct current, but obstruct pulse, therefore former high-voltage DC power supply and the pulse power can be isolated, independent operating, avoids mutual crosstalk, thus the security of operation of the system of guarantee.
The relation of the pulse power and present power supply:
withthe relation of present power supply is additional relation, and the pulse power is attached on present power supply, and adopts high voltage silicon rectifier stack and inductance to isolate to guarantee existing power supply relation, if the pulse power goes wrong, the pulse power will be excised, and not affect the operation of original power supply.
The key technical indexes is:
(1) pulse amplitude is 0.5---0.7 times of basic voltage, and amplitude is adjustable;
(2) pulse frequency is 200Hz to the maximum;
(3) impulse amplitude is 120 ~ 150us
Power supply output parameter is as follows:
(1) pulse voltage amplitude: 20-35kV, amplitude is that step-length is adjustable with 1kV.
(2) pulse width: 120-150 μ s, pulsewidth with 1 μ s for step-length is adjustable.
(3) pulse frequency: 20-200Hz, frequency is that step-length is adjustable with 5Hz.
(4) maximum average current: 5A.
(5) peak power output: 17.5kW
The utility model is by proving power plant of Chifeng explorative experiment: high-voltage pulse power source has the effect of dedusting and desulphurization denitration concurrently simultaneously, especially for dedusting, respond well, has increased substantially efficiency of dust collection.This power plant for this reason engineered supporting high-voltage pulse power source index is:
High voltage: > 25kV;
Burst pulse: < 200 μ s;
Exhaust gas dust concentration: by original 160mg/m
3be reduced to 26mg/m
3;
Power consumption: be reduced to about 10kW by 98kW;
Claims (1)
1. a high-voltage pulse power source dust arrester, is characterized in that: high-voltage pulse electric source circuit arranges rectified three-phase circuit, and the output of rectified three-phase circuit connects inductance and electric capacity; Resistance and the diode of serial connection are set, then and connect trigger switch form trigger pulse circuit, trigger pulse circuit input is connected inductance and the electric capacity of rectified three-phase circuit output with electric capacity by resistance, trigger pulse circuit output connection step-up transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520474251.3U CN204799422U (en) | 2015-07-06 | 2015-07-06 | High -voltage pulse power dust collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520474251.3U CN204799422U (en) | 2015-07-06 | 2015-07-06 | High -voltage pulse power dust collector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204799422U true CN204799422U (en) | 2015-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520474251.3U Active CN204799422U (en) | 2015-07-06 | 2015-07-06 | High -voltage pulse power dust collector |
Country Status (1)
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| CN (1) | CN204799422U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106160561A (en) * | 2016-07-11 | 2016-11-23 | 南京航空航天大学 | The high-voltage pulse electric source circuit that a kind of band magnetic energy optimizes |
| CN107461622A (en) * | 2017-09-14 | 2017-12-12 | 浙江生辉照明有限公司 | induction type bulb |
-
2015
- 2015-07-06 CN CN201520474251.3U patent/CN204799422U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106160561A (en) * | 2016-07-11 | 2016-11-23 | 南京航空航天大学 | The high-voltage pulse electric source circuit that a kind of band magnetic energy optimizes |
| CN106160561B (en) * | 2016-07-11 | 2018-11-23 | 南京航空航天大学 | A kind of high-voltage pulse electric source circuit with magnetic energy optimization |
| CN107461622A (en) * | 2017-09-14 | 2017-12-12 | 浙江生辉照明有限公司 | induction type bulb |
| CN107461622B (en) * | 2017-09-14 | 2023-12-12 | 浙江生辉照明有限公司 | Induction type bulb |
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