CN203494657U - High-voltage pulse power supply for electric dust precipitation - Google Patents
High-voltage pulse power supply for electric dust precipitation Download PDFInfo
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- CN203494657U CN203494657U CN201320466732.0U CN201320466732U CN203494657U CN 203494657 U CN203494657 U CN 203494657U CN 201320466732 U CN201320466732 U CN 201320466732U CN 203494657 U CN203494657 U CN 203494657U
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Abstract
The utility model relates to a high-voltage pulse power supply for electric dust precipitation. The power supply comprises a main loop switch, a high-voltage fundamental wave circuit, a pulse power generator, a coupling circuit, a detection circuit and a DSP (digital signal processor) controller. According to the power supply, the power type of superposing direct current high-voltage fundamental waves and high-voltage pulse power is adopted, so that the problem of absorption of medium/high-specific resistance dust is effectively solved on the premise of ensuring low energy consumption, and meanwhile, serious flashover can be prevented; moreover, the form of superposing the direct current high-voltage fundamental waves and the high-voltage pulse power is adopted, the voltage of the direct current high-voltage fundamental waves can be greatly lower than the working voltage of other power supplies, the potential of an electric field rises and the dust is charged at the moment when high-voltage pulses arrive, and after the high-voltage pulses disappear, the charged dust moves towards a positive plate under the action of the electric field formed by the high-voltage fundamental waves, so that the consumption of energy not participating in dust charging in the electric field is greatly reduced, the energy consumption is lowered, and the electric energy utilization rate is increased.
Description
Technical field
The utility model relates to a kind of high-voltage pulse power power-supply, particularly a kind of electric precipitation high-voltage pulse power power-supply.
Background technology
In recent years, along with country strengthens the management of atmosphere pollution, the environmental emission standard of enterprise is also improving, and a lot of industrial flue gas cleaning equipment does not all reach new standard, faces the situation of secondary transformation.Main flue gas purifying equipment is electric cleaner in the market.And electric cleaner power supply is as one of critical component of electric cleaner, it has important impact to the dust removing effects of electric cleaner, energy consumption, job stability, security.Existing market main power source is three phase mains and high frequency electric source.
Electric cleaner is the equipment that utilizes dust granules thing in high voltage electric field purifying smoke.The gas cleaning process of electric cleaner is divided three phases: 1, gas ionization and dust are charged: between corona discharge electrode and dust collector pole, apply DC high voltage, make near the gas ionization of corona discharge electrode, produce a large amount of negative ions.In corona zone, cation is absorbed in the past by corona discharge electrode immediately, and anion is because being moved by ordering about to dust collector pole of electric field force.2, dust deposit: Charged arrives after dust collector pole, emits negative electrical charge deposition.3, deashing: dust collection is entered to ash bucket.The efficiency of electric precipitation and gas ionization and dust are charged bluntly to be connect relevantly, and gas ionization and dust chargeability are directly related with the voltage of deduster electric charge field, and voltage of electric field raises and can make dust charge electricity rate increase, thereby improves efficiency of dust collection.Meanwhile, voltage of electric field is elevated to a certain degree, and flashover can occur electric field.The infringement that flashover is larger to power supply should be avoided as far as possible.So in order to solve the opposition contradiction of efficiency of dust collection and flashover, the way of above-mentioned two kinds of power supplys is similarly, is not occurring, under the prerequisite of serious flashover (limited number of times flashover), to improve voltage of electric field as far as possible.So both can guarantee the life-span of power supply, can raise the efficiency as much as possible again.
Said method has a defect.A parameter that affects the charged effect of dust granules thing is dust specific resistance, and in flue gas, dust granules thing size kind is different, and they are also more different than resistance.Dust specific resistance is higher, and charged required voltage is higher.In said method in the situation that not there is not serious flashover, better to the assimilation effect of low resistivity dust, and the middle dust absorbing effect than resistance is general, and the dust absorbing effect of high specific resistance is poor.So cause the dust removing effects of deduster can better not promote; Or for promoting dust removing effects, cause dedusting energy consumption significantly to increase, even shorten the deduster life-span.
On the other hand, from energy consumption angle, in electric precipitation process, in dedusting electric field institute consumed energy, only has a very little part for charged to dust, and being form with electronics, the overwhelming majority wherein moved to positive plate from minus plate, this is equivalent to a large amount of electric energy and wastes in electric field, makes utilization rate of electrical lower.Improve dust removing effects, will increase voltage of electric field to improve the collection to nominal particle size dust and high resistivity dust; Reduce the wastage, will reduce voltage of electric field, to reduce the energy wasting in electric field.Energy-conservation and reduction of discharging becomes the opposite of contradiction.Existing power supply is seeking balance between energy-conservation and reduction of discharging normally, meet under the prerequisite reducing discharging as far as possible, pursues energy-conservation maximization in other words.
Summary of the invention
The purpose of this utility model is exactly for fear of the deficiency in background technology, and a kind of electric precipitation high-voltage pulse power power-supply is provided.
For achieving the above object, the utility model adopts following technical scheme: a kind of electric precipitation high-voltage pulse power power-supply, comprises major loop switch, high pressure first-harmonic circuit, Pulsed power generator, coupling circuit, testing circuit, dsp controller;
Described major loop switch is connected with three phase mains, and it is formed by breaker and contactor serial connection;
Described high pressure first-harmonic circuit comprises the first bidirectional triode thyristor loop, the first three-phase main-frequency transformer, high pressure silicon full-bridge rectifier, the three-phase alternating current of input is by major loop switch, through the first bidirectional triode thyristor loop, input three-phase main-frequency transformer, obtain the high direct voltage of negative polarity, then after the filtering of high pressure silicon full-bridge rectifier, be input to coupling circuit;
Described Pulsed power generator comprises the second bidirectional triode thyristor loop, the second three-phase main-frequency transformer, three phase full bridge current rectifying and wave filtering circuit, IGBT module, pulse transformer, the three-phase alternating current of input arrives the second three-phase main-frequency transformer primary through major loop switch and the second bidirectional triode thyristor loop, through the second three-phase main-frequency transformer, boost, produce DC bus-bar voltage after three phase full bridge current rectifying and wave filtering circuit, by IGBT module, move, through pulse transformer, boost again, produce high-voltage pulse, after filtering, be input to coupling circuit;
Described dsp controller connects with the first bidirectional triode thyristor loop, the second bidirectional triode thyristor loop and IGBT module respectively, it comprises pwm signal output, analog signal processing, keyboard, liquid crystal display, memory cell, communication interface unit, fault monitoring and protection unit, realization is to the analog acquisition of testing circuit, processing and show at liquid crystal display, the adjustment bidirectional triode thyristor angle of flow, thereby adjust input voltage size, Intelligent Measurement fault and starting protection when breaking down;
Described testing circuit connects with dsp controller, it comprise first-harmonic part three-phase input voltage input current testing circuit, output fundamental voltage current detection circuit, the three-phase input voltage of segment pulse input current testing circuit, direct current bus voltage detecting circuit, output peak impulse voltage testing circuit, peak current detection circuit, all testing circuits all adopt light-coupled isolation.
For a kind of optimization of the present utility model, described IGBT module adopts LC resonant soft-switching, and it comprises absorption circuit, overvoltage crowbar, current foldback circuit.
For a kind of optimization of the present utility model, described coupling circuit adopts high pressure coupling capacitance as coupled apparatus.
For a kind of optimization of the present utility model, high pressure silicon full-bridge rectifier and three phase full bridge current rectifying and wave filtering circuit connect and form by six high voltage silicon rectifier stacks.
The utility model is compared with background technology, there is the power supply type that adopts high direct voltage first-harmonic stack high-voltage pulse power, make described high-voltage pulse power power-supply guaranteeing, under the prerequisite of low energy consumption, to efficiently solve the absorption problem of middle high resistivity dust, can not produce serious flashover simultaneously; And owing to having adopted the form of high direct voltage first-harmonic stack high-voltage pulse power, high direct voltage first-harmonic can be significantly lower than the operating voltage of other power supplys, and arrive moment at high-voltage pulse, and electric field potential rise, dust is charged, after high-voltage pulse disappears, under the electric field action forming at high pressure first-harmonic, the Charged pole plate that faces south moves, and makes like this to consume in electric field, to have neither part nor lot in the charged energy consumption of dust and greatly reduce, thereby reduced energy consumption, improved utilization rate of electrical; The utility model adopts series resonance soft switch technique to reduce switching loss; and possess short-circuit protection, open-circuit-protection, over-voltage over-current protection; adjust in real time input voltage to guarantee the functions such as stable output; possess frequency modulation, amplitude modulation, the wide function of tune simultaneously, have that efficiency of dust collection is high, energy consumption and performance good, security reliability high.
Accompanying drawing explanation
Fig. 1 is the theory diagram of high-voltage pulse power power-supply for electric precipitation.
Fig. 2 is the circuit diagram of high-voltage pulse power power-supply for electric precipitation.
Fig. 3 is the system architecture diagram of dsp controller.
The specific embodiment
Embodiment 1: with reference to Fig. 1～3.An electric precipitation high-voltage pulse power power-supply, comprises major loop switch, high pressure first-harmonic circuit, Pulsed power generator, coupling circuit, testing circuit, dsp controller;
Described major loop switch is connected with three phase mains, and it is formed by breaker and contactor serial connection;
Described high pressure first-harmonic circuit comprises the first bidirectional triode thyristor loop, the first three-phase main-frequency transformer, high pressure silicon full-bridge rectifier, the three-phase alternating current of input is by major loop switch, through the first bidirectional triode thyristor loop, input three-phase main-frequency transformer, obtain the high direct voltage of negative polarity, then after the filtering of high pressure silicon full-bridge rectifier, be input to coupling circuit;
Described Pulsed power generator comprises the second bidirectional triode thyristor loop, the second three-phase main-frequency transformer, three phase full bridge current rectifying and wave filtering circuit, IGBT module, pulse transformer, the three-phase alternating current of input arrives the second three-phase main-frequency transformer primary through major loop switch and the second bidirectional triode thyristor loop, through the second three-phase main-frequency transformer, boost, produce DC bus-bar voltage after three phase full bridge current rectifying and wave filtering circuit, by IGBT module, move, through pulse transformer, boost again, produce high-voltage pulse, after filtering, be input to coupling circuit;
Described dsp controller connects with the first bidirectional triode thyristor loop, the second bidirectional triode thyristor loop and IGBT module respectively, it comprises pwm signal output, analog signal processing, keyboard, liquid crystal display, memory cell, communication interface unit, fault monitoring and protection unit, realization is to the analog acquisition of testing circuit, processing and show at liquid crystal display, the adjustment bidirectional triode thyristor angle of flow, thereby adjust input voltage size, Intelligent Measurement fault and starting protection when breaking down;
Described testing circuit connects with dsp controller, it comprise first-harmonic part three-phase input voltage input current testing circuit, output fundamental voltage current detection circuit, the three-phase input voltage of segment pulse input current testing circuit, direct current bus voltage detecting circuit, output peak impulse voltage testing circuit, peak current detection circuit, all testing circuits all adopt light-coupled isolation.
Described IGBT module adopts LC resonant soft-switching, and it comprises absorption circuit, overvoltage crowbar, current foldback circuit.Described coupling circuit adopts high pressure coupling capacitance as coupled apparatus.High pressure silicon full-bridge rectifier and three phase full bridge current rectifying and wave filtering circuit connect and form by six high voltage silicon rectifier stacks.
Embodiment 2: with reference to Fig. 2.Electric cleaner comprises that deduster body, filter resistance R1, output voltage detect by divider resistance R2, R3 and output electric current measure resistance R 4, after power connection, by breaker and the contactor of major loop switch, electric current divides A, B two parts to flow into respectively high pressure first-harmonic generator and Pulsed power generator, A is partly through being controlled the first bidirectional triode thyristor loop of the angle of flow by dsp controller, adjust input three-phase voltage size, then inputting the first three-phase main-frequency transformer boosts, by high pressure silicon full-bridge rectifier, obtain negative polarity high direct voltage first-harmonic; B part is after the second bidirectional triode thyristor loop adjustment input three-phase voltage size, through the second three-phase main-frequency transformer, boost, again by obtaining DC bus-bar voltage after three phase full bridge current rectifying and wave filtering circuit, DC bus-bar voltage produces pulse current through IGBT module and is input to the former limit that pulse transformer boosts, after pulse transformer boosts, obtain negative high voltage pulse.A rood to HVDC first-harmonic and the negative high voltage pulse of arriving of B rood, the high voltage source that obtains first-harmonic superimposed pulse through overcoupled circuits outputs to electric cleaner.
Embodiment 3: with reference to Fig. 3.Dsp controller be take TMS320F28335 as main control unit, comprises the parts such as keyboard, liquid crystal display, memory cell, communication interface, analog signal processing, pwm signal output and fault monitoring and protection unit.CPU output multi-channel pwm control signal is realized the stable output of power supply, and wherein IGBT drives 1 road pwm control signal, first-harmonic part bidirectional triode thyristor to pile 6 road pwm control signals, segment pulse bidirectional triode thyristor is piled 6 road pwm control signals, output voltage peak detection circuit 1 road pwm control signal, output current peak detection circuit 1 road pwm control signal.Controller can be realized detection, the detection of input current, the detection of segment pulse DC bus-bar voltage, the detection of output voltage average, the detection of output current average, the detection of output voltage peak value of pulse, the detection of output current peak value of pulse and the temperature of oil in transformer detection etc. to three-phase input voltage.Detect output voltage, the electric current of gained, the corresponding pwm signal that is sent to first-harmonic bidirectional triode thyristor loop of adjusting after AD conversion, CPU process, thus realize the control to fundamental voltage output of voltage; In like manner, detect output crest voltage, the electric current of gained, and DC bus-bar voltage, the corresponding pwm signal that is sent to segment pulse bidirectional triode thyristor loop of adjusting after AD conversion, CPU process, thereby realize the control to DC bus-bar voltage, and then realize the control to output pulse amplitude.
Claims (4)
1. an electric precipitation high-voltage pulse power power-supply, comprises major loop switch, high pressure first-harmonic circuit, Pulsed power generator, coupling circuit, testing circuit, dsp controller;
Described major loop switch is connected with three phase mains, and it is formed by breaker and contactor serial connection; Described high pressure first-harmonic circuit comprises the first bidirectional triode thyristor loop, the first three-phase main-frequency transformer, high pressure silicon full-bridge rectifier, the three-phase alternating current of input is by major loop switch, through the first bidirectional triode thyristor loop, input three-phase main-frequency transformer, obtain the high direct voltage of negative polarity, then after the filtering of high pressure silicon full-bridge rectifier, be input to coupling circuit;
Described Pulsed power generator comprises the second bidirectional triode thyristor loop, the second three-phase main-frequency transformer, three phase full bridge current rectifying and wave filtering circuit, IGBT module, pulse transformer, the three-phase alternating current of input arrives the second three-phase main-frequency transformer primary through major loop switch and the second bidirectional triode thyristor loop, through the second three-phase main-frequency transformer, boost, produce DC bus-bar voltage after three phase full bridge current rectifying and wave filtering circuit, by IGBT module, move, through pulse transformer, boost again, produce high-voltage pulse, after filtering, be input to coupling circuit;
Described dsp controller connects with the first bidirectional triode thyristor loop, the second bidirectional triode thyristor loop and IGBT module respectively, it comprises pwm signal output, analog signal processing, keyboard, liquid crystal display, memory cell, communication interface unit, fault monitoring and protection unit, realization is to the analog acquisition of testing circuit, processing and show at liquid crystal display, the adjustment bidirectional triode thyristor angle of flow, thereby adjust input voltage size, Intelligent Measurement fault and starting protection when breaking down;
Described testing circuit connects with dsp controller, it comprise first-harmonic part three-phase input voltage input current testing circuit, output fundamental voltage current detection circuit, the three-phase input voltage of segment pulse input current testing circuit, direct current bus voltage detecting circuit, output peak impulse voltage testing circuit, peak current detection circuit, all testing circuits all adopt light-coupled isolation.
2. electric precipitation according to claim 1 high-voltage pulse power power-supply, is characterized in that: described IGBT module adopts LC resonant soft-switching, and it comprises absorption circuit, overvoltage crowbar, current foldback circuit.
3. electric precipitation according to claim 1 high-voltage pulse power power-supply, is characterized in that: described coupling circuit adopts high pressure coupling capacitance as coupled apparatus.
4. electric precipitation according to claim 1 high-voltage pulse power power-supply, is characterized in that: high pressure silicon full-bridge rectifier and three phase full bridge current rectifying and wave filtering circuit connect and form by six high voltage silicon rectifier stacks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320466732.0U CN203494657U (en) | 2013-07-31 | 2013-07-31 | High-voltage pulse power supply for electric dust precipitation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320466732.0U CN203494657U (en) | 2013-07-31 | 2013-07-31 | High-voltage pulse power supply for electric dust precipitation |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103920594A (en) * | 2013-07-31 | 2014-07-16 | 金华大维电子科技有限公司 | High-voltage pulse power supply for electric precipitation |
| CN104143933A (en) * | 2014-06-10 | 2014-11-12 | 江苏容天机电科技有限公司 | Electrostatic dust collection micropulse transformer |
| CN104785373A (en) * | 2015-04-03 | 2015-07-22 | 金华大维电子科技有限公司 | Pulsed power supply for electric precipitation |
-
2013
- 2013-07-31 CN CN201320466732.0U patent/CN203494657U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103920594A (en) * | 2013-07-31 | 2014-07-16 | 金华大维电子科技有限公司 | High-voltage pulse power supply for electric precipitation |
| CN104143933A (en) * | 2014-06-10 | 2014-11-12 | 江苏容天机电科技有限公司 | Electrostatic dust collection micropulse transformer |
| CN104785373A (en) * | 2015-04-03 | 2015-07-22 | 金华大维电子科技有限公司 | Pulsed power supply for electric precipitation |
| CN104785373B (en) * | 2015-04-03 | 2017-06-20 | 浙江大维高新技术股份有限公司 | A kind of electric precipitation pulse power |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 321031 Zhejiang province Jinhua City Jindong Cao Zhai Zhen West Industrial Park, building 3, 1, 2 Patentee after: ZHEJIANG DOWAY ADVANCED TECHNOLOGY Co.,Ltd. Address before: 321031 Zhejiang province Jinhua City Jindong Cao Zhai Zhen West Industrial Park Patentee before: JINHUA DOWAY ELECTRONIC TECHNOLOGY CO.,LTD. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: High-voltage pulse power supply for electric precipitation Effective date of registration: 20191016 Granted publication date: 20140326 Pledgee: China Co. truction Bank Corp Jinhua branch Pledgor: ZHEJIANG DOWAY ADVANCED TECHNOLOGY Co.,Ltd. Registration number: Y2019330000116 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20201229 Granted publication date: 20140326 Pledgee: China Co. truction Bank Corp Jinhua branch Pledgor: ZHEJIANG DOWAY ADVANCED TECHNOLOGY Co.,Ltd. Registration number: Y2019330000116 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: High voltage pulse power supply for electrostatic precipitator Effective date of registration: 20201231 Granted publication date: 20140326 Pledgee: China Co. truction Bank Corp Jinhua branch Pledgor: ZHEJIANG DOWAY ADVANCED TECHNOLOGY Co.,Ltd. Registration number: Y2020330001357 |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140326 |