CN207204386U - A kind of high-frequency and high-voltage power supply of electrostatic precipitation - Google Patents
A kind of high-frequency and high-voltage power supply of electrostatic precipitation Download PDFInfo
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- CN207204386U CN207204386U CN201720528719.1U CN201720528719U CN207204386U CN 207204386 U CN207204386 U CN 207204386U CN 201720528719 U CN201720528719 U CN 201720528719U CN 207204386 U CN207204386 U CN 207204386U
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Abstract
It the utility model is related to a kind of high-frequency and high-voltage power supply of electrostatic precipitation, collected and process circuit and control circuit including main power conversion circuit, sensing, wherein control circuit is connected by drive circuit with main power circuit, and sensing is collected to be connected with process circuit with control circuit；Sensing collects the dsp chip sent the data collected to process circuit in control circuit.By the way that dust sensor is handled the dust concentration information conveyance at the dust concentration of electrostatic equipment air inlet and air outlet into control chip, and output voltage regulation on the premise of meeting that power safety is run more is adapted to numerical value to one by adjusting the output voltage of high frequency electric source and observing situation that efficiency of dust collection changes, and then efficiency of dust collection is maintained at a higher level.The utility model is simple in construction, and cost is low, can be maintained it according to dust removing effects to adjust the output voltage of electric dust-removing power supply under optimal output voltage, and then optimal efficiency of dust collection.
Description
Technical field
It the utility model is related to the power supply of electrostatic precipitation, and in particular to a kind of high-frequency and high-voltage power supply of electrostatic precipitation.
Background technology
Administer the high-voltage electrostatic dust separator of industrial dust pollution（EPS）Because efficiency of dust collection is high, energy consumption is low, maintenance management side
Just etc., increasingly it is valued by people.The mechanism of electrostatic precipitation is to make space electric field that corona discharge occur, and is produced largely certainly
By electronics and anion, the space electric field electrostatic suction that they collide the negatively charged pear to be formed and be subject to polluting the dust in air
Draw and cleared up by the dust collecting electrode capture in positive polarity, then by deashing device timing, so as to purify air.
From after electrostatic precipitation appearance, many scholars are directed to how research further improves efficiency of dust collection, 21 century with
High-frequency high-voltage source technology is increasingly mature afterwards, through instead of original frequency high voltage power supply extensively, because it has electric energy
Quality is good, more preferable modulability and the advantages that lower ripple factor, therefore is widely applied to electrostatic precipitation field.
The efficiency of dust collection of industrial electrostatic precipitation has a very large relationship with electric power output voltage, when output voltage exceedes
After beginning corona voltage, with the rise of voltage, the free electron and anion quantity that discharge electrode is released are more and more, and this also causes
Efficiency of dust collection more and more higher；But, due to the breakdown reason in gap, led when output voltage continues to improve until exceeding breakdown voltage
Cause efficiency of dust collection significantly to decline, or even it is also possible to cause device damage, endanger worker's life security.
The content of the invention
The utility model is by the use of the dust concentration that sensor gathers as detection limit, by rational hardware design, more
Effectively instruct power supply to export higher levels of output voltage, but ensure the normal operation of equipment again simultaneously, make to carry as far as possible
The efficiency of dust collection of high dust arrester.Therefore, the utility model provides a kind of high-frequency and high-voltage power supply of electrostatic precipitation.
The utility model purpose is realized by using following technical scheme：
A kind of high-frequency and high-voltage power supply of electrostatic precipitation, including main power conversion circuit, sensing collect with process circuit with
And control circuit, wherein control circuit are connected by drive circuit with main power circuit, sensing is collected and process circuit and control
Circuit is connected；Sensing is collected sends the data collected to DSP control circuits in control circuit with process circuit, then by
DSP control circuits send a control signal to drive circuit, adjust main power conversion circuit output voltage.
Further, main power conversion circuit includes current rectifying and wave filtering circuit, primary transform circuit, high-frequency and high-voltage rectifying and wave-filtering electricity
Road and output circuit；Primary transform circuit includes full bridge high frequency inverter circuit（That is full-bridge circuit）And switch transformer；Input and be
Three-phase alternating-current supply, by current rectifying and wave filtering circuit, then by full bridge high frequency inverter circuit, after being boosted by switch transformer, warp
Cross high frequency high-voltage rectifying filter circuit rectification output；Wherein DSP control circuits by drive circuit to main power conversion circuit
The power tube IGBT of full bridge high frequency inverter circuit carries out conducting shut-off control.
Further, described sensing is collected includes laser scattering type sensor of dust concentration with process circuit
LDPM1000I, pt100 technical grade temperature sensor, A/D convertor circuit, accessory power supply and DSP control circuits；Wherein dust passes
Sensor and temperature sensor are technical grade sensor, and sensor is connected with A/D convertor circuit, will be gathered by A/D convertor circuit
To data be transferred to DSP control chips carry out data processing, and accessory power supply be then for DSP control circuits provides stably
Operation level；Described control circuit includes DSP control circuits, sample circuit and computing adjuster；Wherein DSP control circuits
Using dsp chip TMS320F2812, it can be mutual by the voltage of sample circuit respectively by electric power output voltage and output current
Sensor summation current transformer is acquired, and enters line number by the data acquisition pin that dsp chip is delivered into after computing adjuster
According to collection, when there is over-voltage and over-current, dsp chip is realized to output voltage and defeated by carrying out locking to PWM generator
Go out the over-voltage over-current protection of electric current.
Further, described laser scattering type sensor of dust concentration LDPM1000I is to be divided into two groups, every group of 5 biographies
The form of sensor is arranged in the air inlet and air outlet of electrostatic precipitator, the dust concentration number that dust sensor detects
According to after DSP control circuits are sent to, average and layered method, the result conduct finally drawn are carried out in DSP control circuits
Control foundation to output voltage.
Compared with prior art, the beneficial effects of the utility model：
The utility model is simple in construction, and cost is low, and improvement is optimized available for the power supply to existing electrostatic precipitator,
Show that clean-up effect assesses parameter by sensor technology, feed back to power control circuit to reach most suitable output voltage,
Realize optimal clean-up effect, be effectively guaranteed can be under safe operation in system optimal voltage output, and then certain journey
Degree improves efficiency of dust collection, and this is a kind of optimization improvement to existing electrostatic potential source.It is meanwhile this by detection means and purification dress
Put to form an overall thinking of feedback can also be as the one of the equipment containing electrostatic precipitator such as air purifier
Kind mentality of designing, the optimization design for civilian clarifier power supply provide reference.
Brief description of the drawings
Fig. 1 is high-frequency and high-voltage power supply circuit structure diagram.
Fig. 2 is electric power output voltage control flow chart.
Embodiment
Specific embodiment of the present utility model is described further with reference to example and accompanying drawing, but this practicality is new
The implementation of type and protection not limited to this, it is noted that key of the present utility model is the technical side proposed to hardware configuration
Case, it is that chip itself has or those skilled in the art can refer to existing skill if relating to control or algorithm part below
Art programming realization.
Fig. 1 is high-frequency and high-voltage power supply circuit structure diagram, it include main power conversion circuit, sensing collect with process circuit with
And control circuit, wherein control circuit are connected by drive circuit with main power circuit, sensing is collected and process circuit and control
Circuit is connected；Sensing is collected sends the data collected to DSP control circuits in control circuit with process circuit, then by
DSP control circuits send a control signal to drive circuit, adjust main power conversion circuit output voltage, as much as possible will be net
Change efficiency to ensure in a higher numerical value.
Main power conversion circuit includes current rectifying and wave filtering circuit, primary transform circuit（Full-bridge circuit, switch transformer）, high frequency it is high
Press current rectifying and wave filtering circuit and output circuit；Input as three-phase alternating-current supply, by current rectifying and wave filtering circuit, then by full bridge high frequency
Inverter circuit, after being boosted by switch transformer, exported by the rectification of high-frequency and high-voltage current rectifying and wave filtering circuit；Wherein DSP control circuits
Conducting shut-off control is carried out to the power tube IGBT of the full bridge high frequency inverter circuit of main power conversion circuit by drive circuit.
Described sensor detection process circuit includes laser scattering type sensor of dust concentration LDPM1000I, pt100 work
Industry level temperature sensor and DSP control circuits, the data output of the two are directly connected with DSP control chips；Wherein
Dust sensor and temperature sensor are technical grade sensor, and DSP control circuits use TMS320F2812 as main control unit,
Its perform function mainly generation including PWM driving control signal and control, Spark plug optical fiber sensor, fault detect and protection circuit
Driving, using IR2110 as core, pwm control signal occurs to produce signal through level conversion with output circuit for driving and protection circuit
With the break-make that power tube in IR2100 drive modules and then control inverter is given after light-coupled isolation.
Further, dust sensor using technical grade laser scattering type sensor of dust concentration
LDPM1000I, there are two kinds of numeric type and 4-20mA analogue types, numeric type is used in the utility model, measurement range is
0-1000mg/m3, measurement error is<10%, stability relative error is ± 2.5%；Temperature sensor is using technical grade
Pt100 technical grade temperature sensors, have precision high, stability is good, and temperature limit is wide, is middle low-temperature space（- 200~650
℃）A kind of the most frequently used temperature detector.
Described laser scattering type sensor of dust concentration LDPM1000I is to be divided into two groups, the form of every group of 5 sensors
The air inlet and air outlet of electrostatic precipitator are arranged in, the dust concentration data that dust sensor detects are being sent to
After DSP control chips, average and layered method are carried out in dsp chip, the efficiency of dust collection coefficient finally drawn is used as to output
The control foundation of voltage.
Further, 5 data instances collected with air inlet, dsp chip is directly to this 5 dust concentration data
Mean value computation is carried out, while by dust concentration according to 0-100mg/m3、100-800mg/m3And 800-1000mg/m3It is light respectively
Spend dust concentration, moderate dust concentration and this three sections of sections of severe dust concentration.When dust concentration average is in slight dust
During concentration ranges, efficiency of dust collection coefficient=（1- air outlets dust concentration/air inlet dust concentration）* 100%+ corrects percentage system
Number；When dust concentration average is in moderate dust concentration section, efficiency of dust collection coefficient=（1- air outlets dust concentration/air inlet
Dust concentration）*100%；When dust concentration average is in severe dust concentration section, efficiency of dust collection coefficient=（1- air outlet powder
Dust concentration/air inlet dust concentration）* 100%-correction percent coefficient.
The reason for wherein introducing correction percent coefficient is that sensor can only measure because when concentration is too low or too high
Overall mean dust concentration can not be reacted completely and can cause measurement error to the dust concentration of part, correction percentage system
Number can be selected according to actual conditions；But electrostatic equipment general dust concentration in normal work is in moderate dust concentration area
Between, the dust concentration situation of inlet and outlet can be reacted substantially by now roughly thinking the testing result of sensor.
Described control circuit includes DSP control circuits, Acquisition Circuit and computing adjuster；Wherein DSP control circuits
TMS320F2812 is used as described in right 3 as main control unit, it can pass through electric power output voltage and output current respectively
Voltage transformer summation current transformer is acquired, by the data acquisition that DSP control chips are delivered into after computing adjuster
Pin carry out data acquisition, when there are the failures such as over-voltage and over-current, DSP control chips by PWM generator carry out locking with
Realize to output voltage and the over-voltage over-current protection of output current.
A kind of application example of the present utility model is only used as below.
Fig. 2 is electric power output voltage control flow chart, and the control method of electric power output voltage is illustrated in conjunction with the figure.It is first
First related sensor carries out respective Data Collection, and the data being collected into are conveyed to dsp chip, and dsp chip will receive
Data carry out average and layered method and obtain efficiency of dust collection coefficient, and the control strategy by finishing writing in advance enters line output voltage
Control.
The control strategy of described DSP control chips is that it is dense that DSP control chips carry out dust after the first step first switches on power
First efficiency of dust collection coefficient is obtained after degrees of data sampling processing to be stored in the one variable temp1 in inside；Second step is DSP controls
Output voltage was improved 1000V by coremaking piece after first second, and the efficiency of dust collection coefficient for handling to obtain for the first time after boosting is stored in
In one variable temp2；3rd step is the numerical value of the numerical values recited that DSP control chips compare temp1 and temp2, now temp2
It is bigger than temp1, then the difference of the two is stored in a variable temp3, temp2 value is assigned to temp1 again afterwards, completed
The data alternating of efficiency of dust collection coefficient；4th step is again raising output voltage 1000V, repeats the behaviour of second step and the 3rd step
Make, the efficiency of dust collection coefficient of newest acquisition each time is all saved in temp2, wherein this time temp1 and temp2 in the 3rd step
Difference be stored in a variable temp4, remaining holding is constant；5th step be observation temp4 whether bigger than temp3 5% with
On, if greater than 5%, then continue to repeat the step of second step is to four steps, otherwise maintain output voltage constant；And temp4's
Numerical value is assigned to temp3, completes the data alternating of the numerical difference of efficiency of dust collection coefficient；Second step is repeated simultaneously to the 5th step,
If the variable temp2 in the process, detected is significantly less than temp1 suddenly, then now flashover occurs for electrostatic equipment, and record rises
Output voltage before pressure, and power tube IGBT is rapidly switched off to prevent the further development of flashover, will output electricity after turning back on
The output voltage that pressure quick regulation records between, and carry out stablizing output.
By being removed to the comparison of efficiency of dust collection coefficient temp1 and temp2 numerical value before and after boosting and twice before and after boosting
Dirt efficiency factor numerical difference temp3 and temp4 comparison, the former can ensure that high-frequency and high-voltage power supply is not breakdown in electrostatic equipment
On the premise of, output voltage is improved as far as possible to reach higher efficiency of dust collection；The latter is then to improve output voltage
In the case of efficiency of dust collection can not being significantly improved, abandon continuing boosting automatically to prevent electrostatic equipment from arcing fault occurs.
When detecting what second efficiency of dust collection coefficient temp2 was decreased obviously compared to first time efficiency of dust collection coefficient temp1
When, DSP control chips can judge that now there occurs the arcing fault of electrostatic equipment, Gu Qihui automatically to rapidly switch off power tube
IGBT, and turn back on output voltage fast lifting to the regulated output voltage value recorded before, so can be preferable
Ensure the reliability service of electrostatic equipment and high-frequency and high-voltage power supply.
Claims (5)
1. a kind of high-frequency and high-voltage power supply of electrostatic precipitation, it is characterised in that collect and locate including main power conversion circuit, sensing
Reason circuit and control circuit, wherein control circuit are connected by drive circuit with main power circuit, and sensing is collected and processing electricity
Road is connected with control circuit；It is electric that sensing collects the DSP controls for sending the data collected in control circuit to process circuit
Road, then one control signal is sent to drive circuit by DSP control circuits, adjust main power conversion circuit output voltage.
A kind of 2. high-frequency and high-voltage power supply of electrostatic precipitation according to claim 1, it is characterised in that：Main power conversion electricity
Road includes current rectifying and wave filtering circuit, primary transform circuit, high-frequency and high-voltage current rectifying and wave filtering circuit and output circuit；Primary transform circuit includes complete
Bridge-type high-frequency inverter circuit and switch transformer；Input as three-phase alternating-current supply, by current rectifying and wave filtering circuit, then by full-bridge type
High-frequency inverter circuit, after being boosted by switch transformer, exported by the rectification of high-frequency and high-voltage current rectifying and wave filtering circuit；Wherein DSP is controlled
Circuit carries out conducting shut-off by drive circuit to the power tube IGBT of the full bridge high frequency inverter circuit of main power conversion circuit
Control.
A kind of 3. high-frequency and high-voltage power supply of electrostatic precipitation according to claim 1, it is characterised in that：Described sensing is received
Collection includes laser scattering type sensor of dust concentration LDPM1000I, pt100 technical grade temperature sensor with process circuit, AD turns
Change circuit, accessory power supply and DSP control circuits；Wherein dust sensor and temperature sensor are technical grade sensor, are passed
Sensor is connected with A/D convertor circuit, and the data collected are transferred into DSP control chips by A/D convertor circuit carries out data
Processing, and accessory power supply then provides stable operation level for DSP control circuits；DSP control circuits both belong to sensing collect with
Process circuit, fall within the control circuit.
A kind of 4. high-frequency and high-voltage power supply of electrostatic precipitation according to claim 1, it is characterised in that：Described control electricity
Road includes DSP control circuits, sample circuit and computing adjuster；Wherein DSP control circuits use dsp chip
TMS320F2812, electric power output voltage and output current can be passed through the voltage transformer and electric current of sample circuit respectively by it
Transformer is acquired, and data acquisition is carried out by the data acquisition pin that dsp chip is delivered into after computing adjuster, when going out
During existing over-voltage and over-current, dsp chip to PWM generator by carrying out locking to realize the overvoltage to output voltage and output current
Overcurrent protection.
A kind of 5. high-frequency and high-voltage power supply of electrostatic precipitation according to claim 3, it is characterised in that：Described laser dissipates
Formula sensor of dust concentration LDPM1000I is penetrated to be divided into two groups, the form of every group of 5 sensors is arranged in electrostatic precipitation dress
The air inlet and air outlet put, the dust concentration data that dust sensor detects are after DSP control chips are sent to, in DSP
Average and layered method are carried out in chip, the result finally drawn is as the control foundation to output voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720528719.1U CN207204386U (en) | 2017-05-12 | 2017-05-12 | A kind of high-frequency and high-voltage power supply of electrostatic precipitation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720528719.1U CN207204386U (en) | 2017-05-12 | 2017-05-12 | A kind of high-frequency and high-voltage power supply of electrostatic precipitation |
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| CN207204386U true CN207204386U (en) | 2018-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720528719.1U Expired - Fee Related CN207204386U (en) | 2017-05-12 | 2017-05-12 | A kind of high-frequency and high-voltage power supply of electrostatic precipitation |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109876925A (en) * | 2018-04-14 | 2019-06-14 | 青岛科技大学 | Flue gas waste heat utilization and intelligent electric field intensity adjusting system thereof |
| CN110860379A (en) * | 2019-11-25 | 2020-03-06 | 龙岩市龙电环保设备有限公司 | High-voltage power supply intelligent control system |
| CN114798179A (en) * | 2022-05-25 | 2022-07-29 | 南方电网电力科技股份有限公司 | Control method and device of electrostatic dust collector |
-
2017
- 2017-05-12 CN CN201720528719.1U patent/CN207204386U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109876925A (en) * | 2018-04-14 | 2019-06-14 | 青岛科技大学 | Flue gas waste heat utilization and intelligent electric field intensity adjusting system thereof |
| CN110860379A (en) * | 2019-11-25 | 2020-03-06 | 龙岩市龙电环保设备有限公司 | High-voltage power supply intelligent control system |
| CN114798179A (en) * | 2022-05-25 | 2022-07-29 | 南方电网电力科技股份有限公司 | Control method and device of electrostatic dust collector |
| CN114798179B (en) * | 2022-05-25 | 2024-03-19 | 南方电网电力科技股份有限公司 | Control method and device of electrostatic precipitator |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180410 Termination date: 20190512 |