CN207546760U - A kind of safety-type high voltage power supply - Google Patents
A kind of safety-type high voltage power supply Download PDFInfo
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- CN207546760U CN207546760U CN201720906024.2U CN201720906024U CN207546760U CN 207546760 U CN207546760 U CN 207546760U CN 201720906024 U CN201720906024 U CN 201720906024U CN 207546760 U CN207546760 U CN 207546760U
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Abstract
The utility model proposes a kind of safety-type high voltage power supplies,Including power circuit,Oscillating circuit,Driving circuit,High-voltage output circuit,Output current detection circuit,Arcing omen discriminator circuit,Arcing condition destroys circuit and restarts circuit automatically,The output terminal of the oscillating circuit is connected to the input terminal of driving circuit,The output terminal of the driving circuit is connected to the input terminal of high-voltage output circuit,The output terminal of the high-voltage output circuit is connected to the input terminal of output current detection circuit,The output terminal of output current detection circuit is connected to the input terminal of arcing omen discriminator circuit,The output terminal of the arcing omen discriminator circuit is connected to the input terminal that arcing condition destroys circuit,The output terminal of the arcing condition destruction circuit is connected to the control terminal of oscillating circuit,It is described automatic to restart circuit and be connected with the control terminal of oscillating circuit,It can inhibit arcing and reduce the energy of discharge spark,Eliminate the ignitable safety defect of high voltage power supply,Clear away the obstacle that electrostatic precipitation administers haze.
Description
【Technical field】
The utility model is related to electronic technology and the technical field of environmental protection industry (epi), particularly electrostatic precipitations and fume purifying row
A kind of safety-type high voltage power supply used in industry.
【Background technology】
Social economy's high speed development, the haze of association also getting worse.Haze not only damages the physical and mental health of people, substantially
National Happiness Index is reduced, is also hindered the development of the economy, becomes the people's livelihood and an economic big pain spot, the pressure of control atmosphere pollution
It is with increasing intensity daily.The cardinal task that government will control haze and be regarded as performing actual deeds for the people is not stinted and factory's limited production, vehicle is taken the measures such as to restrict driving,
But effect is limited, and increasing economic downstream pressure and influencing the minor face effect that the lives of the people work can not avoid.
In fact, factory limited production, vehicle restrict driving can only pollution abatement discharge, it is impossible to effect a radical cure haze.The method for the treatment of both manifestation and root cause of disease
It is to widely popularize Environmental-protecting dust-removing technology.As long as emission control is all realized in all discharge sources, restrict driving, also ensure that without limiting the production
Blue sky and white cloud normalization, this is the basic method for controlling haze.
At present there are three types of the mainstream technologys of Environmental-protecting dust-removing：When centrifugal dust-removing, second is that cloth bag or filter core dedusting, third, high pressure
Electrostatic precipitation, three respectively have quality.
Centrifugal dust-removing can only remove bulky grain object, helpless to the micron order pollutant for forming haze, generally only as
The prime pretreatment of dedusting.
Cloth bag or filter core dedusting windage are big, and operating cost is high, can not handle kitchen fumes and industrial oil mist pollutant, should
With being limited in scope.
High-pressure electrostatic precipitation windage is small, can handle mist of oil pollutant, particularly has to the micron order pollutant for forming haze
Effect, operating cost is low, is to administer the most effective technological means of haze.The technical principle of high-pressure electrostatic precipitation is：High voltage power supply is produced
The high direct voltage of raw tens thousand of volts, which is applied on the pole plate of dust electric field, forms very strong static electric field, and negative high voltage discharge electrode is sent out simultaneously
Penetrate a large amount of negatively charged electronics.Dust, oil smoke when pollutants by taking negative electrical charge during clarifier dust electrostatic field, it is electric immediately
Field force capture is adsorbed onto on positive plate, and the pure air for removing pollutant is discharged into air again, so as to fulfill the net of pollution sources
Change control.The dust of pollution sources and oil smoke can be effectively prevent to pollute air using the technology, be widely used at present
Power plant, chemical industry, dyeing, industrial and mining enterprises, indoor purifying and catering trade are the mainstream technologys of control atmosphere pollution,
Application surface is increasingly extensive.
It is contemplated that when all fixed discharge sources and mobile emission source all apply high voltage electrostatic dust precipitator,
Atmosphere pollution is controlled from source, is restricted driving without limiting the production, and haze just can be eradicated thoroughly.Conversely, after contamination, even if ring
It protects controlling input and increases thousand times, haze is also difficult to eradicate.Electrostatic precipitation is most effective, is also the technology hand of most probable radical cure haze
Section.
But there are a kind of fatal safety defects for high voltage electrostatic dust precipitator, are exactly easy initiation fire incident.This is lacked
Falling into becomes the major obstacle of universal electrostatic precipitator technology.
It is common phenomenon that disruptive discharge, which occurs, for the high pressure of tens thousand of volts between pole plate.In certain temperature, humidity and oil smoke powder
Under the conditions of dust concentration, disruptive discharge forms one section of electric arc and burns steadily sometimes, and this phenomenon is known as arcing.Work as combustibility
When greasy dirt is enriched with, arcing can light greasy dirt and cause fire, and dust concentration, which reaches burst point, can also cause an explosion accident.Because of high-pressure electrostatic
There is what is heard during the fire incident that dust-extraction unit causes, this not only jeopardizes user's person and property safety, corresponding financial responsibility pressure
Power also becomes the secret worry of cleaner manufacturer maximum.This is the key problem of the long-standing general character of industry and popularizes
High pressure electrostatic precipitation technology realizes the biggest obstacle except haze.
At present, electrostatic dust-removing electrical source includes oscillating circuit and driving circuit, is exported after driving high voltage package transformation, rectification
Tens thousand of volt high direct voltages.Magnetic ring coil is detected by high-voltage output line string, low-voltage line packet string detects magnetic ring coil or high pressure packs tightly
The signal of variable-current and voltage when the methods of pasting sampling coil detection discharge pulse occurs, realizes that open circuit is protected through interlock circuit
Shield, short-circuit protection and discharge prevention, prevent high voltage power supply from damaging.However above-mentioned protection scheme is to disruptive discharge, short circuit and open circuit
Abnormality is sensitiveer, there is protection blind area to arcing, the reason is that the existing High voltage output of arcing state, also there is stable electricity
Stream, abnormal signal are difficult to capture.Therefore electrostatic precipitator is in the flammable mist of oil of processing, it is difficult to the generation of fire is avoided, because
This proposes a kind of safety-type high voltage power supply.
【Utility model content】
The purpose of this utility model is exactly to solve the problems of the prior art, proposes a kind of safety-type high voltage power supply, can
Inhibit arcing and reduce the energy of discharge spark, eliminate the ignitable safety defect of high voltage power supply, cleaning electrostatic precipitation administers mist
The obstacle of the major obstacle of haze.
To achieve the above object, the utility model proposes a kind of safety-type high voltage power supply, including power circuit, oscillation electricity
Road, driving circuit, high-voltage output circuit, output current detection circuit, arcing omen discriminator circuit, arcing condition destroy circuit and
Automatically restart circuit, the output terminal of the oscillating circuit is connected to the input terminal of driving circuit, the output terminal of the driving circuit
The input terminal of high-voltage output circuit is connected to, the output terminal of the high-voltage output circuit is connected to the defeated of output current detection circuit
Enter end, the output terminal of the output current detection circuit is connected to the input terminal of arcing omen discriminator circuit, the arcing omen
The output terminal of discriminator circuit is connected to the input terminal that arcing condition destroys circuit, and the output terminal that the arcing condition destroys circuit connects
It is connected to the control terminal of oscillating circuit, it is described automatic to restart circuit and be connected with the control terminal of oscillating circuit.
Preferably, the power circuit includes current rectifying and wave filtering circuit and DC-DC conversion circuit, the power circuit is used for
Alternating current is converted to direct current 12V to power to each unit circuit.
Preferably, the oscillating circuit includes U1, C1 and R1, the driving circuit includes L1, R2 and R3, the height
Voltage follower circuit includes T1, T2, C2, C3 and L3, and the oscillating circuit determines frequency of oscillation, chip U1 amplification letters by C1 and R1
Number, the isolating transformer L1 through driving circuit is sent to half-bridge high-voltage output circuit, by T1, T2 and C2 of high-voltage output circuit,
C3 is applied to the primary of high voltage package L2, and the high direct voltage output after high voltage package secondary Transformer Rectifier is connected to output electric current measure
The measure loop of circuit.
Preferably, the arcing omen discriminator circuit includes R4, R5, U2 and D2, the output current detection circuit
Sampling resistor is sent to arcing omen discriminator circuit for that will detect signal, and the arcing omen discriminator circuit is used to that signal will to be detected
Voltage judges whether arcing omen signal occur compared with the normal setting value of corona discharge state.
Preferably, the arcing condition, which destroys circuit, includes U3, D3, R6 and T1, the arcing condition is destroyed circuit and is used
Terminate transition transient state in closing oscillation in the action signal for receiving arcing omen discriminator circuit.
Preferably, it is described it is automatic restart circuit and include C4, it is described automatic to restart circuit for device to be made to return automatically again
To corona discharge state.
The beneficial effects of the utility model：By the research of arcing genesis mechanism, research and develop effective arcing omen and screen electricity
Road finds and screens arcing omen characteristic quantity, then destroys circuit by arcing condition, destroys the condition that arcing generates, avoids sending out
Arcing is given birth to realize that arcing inhibits protection.The utility model is not to detect arcing state trigger protection circuit again, but is detected
Omen before occurring with the presence or absence of arcing.Once arcing omen is detected, it is rapid to start related protection circuit damage arcing condition,
Prevent fiery arc from occurring.
Specifically, there are two types of stable states for the working condition of high-pressure electrostatic precipitation electric field：One kind is corona discharge state.
The transmitting of negative high voltage discharge electrode is largely negatively charged to be electronically attached on the contaminant particles such as dust oil smoke, and electric field force captures clearly immediately
Except the contaminant particle of electrification.This is normal dedusting working condition；Another kind is that electric arc maintains stable arcing state, burning
Electric arc become cause fire source.
Between both stable states, there are extremely short transient state transition states, exactly when medium closes on breakdown, are first
Partial air molecule is ionized to form plasma conductive channel, and subsequent ion stream is acted on by electric field force accelerates anisotropy electrode to fly
It crosses, ionic bombardment air molecule during flying over, the kinetic energy part that ion is obtained by electric field acceleration continues air molecule
Ionization maintains the presence of plasma conductive channel, and another part then emits light and heat the condition of high temperature of pilot arc, this process is held
Continue down just formation arc voltage and arcing current, arcing thus to generate.
High voltage power supply still has high tension voltage and electric current output under arcing state, and the arc root voltage at electric arc both ends is each close to 1,000
Volt, it is different that arc stream then regards arc column length, is differed for thousands of volts to more than 10,000 volt height, and the sum of three sections of voltage is exactly that electric arc is electric
Pressure, arcing power are then stablized tens between several hectowatts, and arcing current is also at corresponding stationary value.Based on arcing occurs
The analysis of mechanism it is found that from corona discharge state to arcing state there are of short duration transition state, it is characterized in that there is electricity
Arc voltage and arcing current.Although arcing abnormal state signal unobvious, characteristic quantity is hidden, arcing current and normal work electricity
Stream still has differences, and output current detection circuit is designed for this difference, once detecting this difference finds arcing
Omen.As long as the quick closedown High voltage output before arcing state is entered, arcing occurrence condition just can be destroyed, interrupts plasma
Conductive channel, automatic restarting and restoring work immediately again after arc extinguishing, makes electrostatic precipitator be restored to corona from transition state automatically
Discharge condition avoids enter into arcing state.It thus can make each disruptive discharge that can not all form arcing, effectively eliminate high pressure
Power supply realizes that arcing inhibits defencive function because arcing leads to danger on fire.
The utility model also has uniqueness other than having conventional disruptive discharge protection, open-circuit-protection and short-circuit protection
Arcing inhibit defencive function, by detect arcing omen and start arcing condition destroy circuit, make each disruptive discharge all
Arcing can not be formed, eliminates arcing harm.After the utility model, electrostatic precipitator removes as a kind of safety-type electrostatic
Dirt device, originally common arcing no longer occur, the accidents such as fire, explosion that arcing is effectively avoided to cause solve environmental protection and remove
The long-standing key problem of dirt industry.Greatly improve the safety of electrostatic precipitator, user's personal safety and property
Safety has guarantee, and the secret worry of producer's maximum is eliminated.Especially, after eliminating this security risk, high-pressure electrostatic precipitation
Technology can popularization and application, haze can be administered just as actual capabilities, economic benefit and social benefit by restricting driving without limited production
Obviously.
The feature and advantage of the utility model will be described in detail by embodiment combination attached drawing.
【Description of the drawings】
Fig. 1 is a kind of functional block diagram of safety-type high voltage power supply embodiment of the utility model；
Fig. 2 is a kind of circuit diagram of safety-type high voltage power supply embodiment of the utility model.
【Specific embodiment】
Refering to a kind of safety-type high voltage power supply of Fig. 1 and Fig. 2 the utility model, including power circuit 1, oscillating circuit 2, driving
Circuit 3, high-voltage output circuit 4, output current detection circuit 5, arcing omen discriminator circuit 6, arcing condition destroy circuit 7 and oneself
Dynamic to restart circuit 8, the output terminal of the oscillating circuit 2 is connected to the input terminal of driving circuit 3, the output of the driving circuit 3
End is connected to the input terminal of high-voltage output circuit 4, and the output terminal of the high-voltage output circuit 4 is connected to output current detection circuit
5 input terminal, the output terminal of the output current detection circuit 5 are connected to the input terminal of arcing omen discriminator circuit 6, the combustion
The output terminal of arc omen discriminator circuit 6 is connected to the input terminal that arcing condition destroys circuit 7, and the arcing condition destroys circuit 7
Output terminal be connected to the control terminal of oscillating circuit 2, it is described automatic to restart circuit 8 and be connected with the control terminal of oscillating circuit 2.It is described
Power circuit 1 includes current rectifying and wave filtering circuit and DC-DC conversion circuit, and the power circuit 1 is used to alternating current being converted to direct current 12V
It powers to each unit circuit.The oscillating circuit 2 includes U1, C1 and R1, and the driving circuit 3 includes L1, R2 and R3, described
High-voltage output circuit 4 includes T1, T2, C2, C3 and L3, and the oscillating circuit 2 determines frequency of oscillation by C1 and R1, and chip U1 is put
Big signal, the isolating transformer L1 through driving circuit 3 are sent to half-bridge high-voltage output circuit 4, by the T1 of high-voltage output circuit 4,
T2 and C2, C3 are applied to the primary of high voltage package L2, and the high direct voltage output after high voltage package secondary Transformer Rectifier is connected to output
The measure loop of current detection circuit 5.The arcing omen discriminator circuit 6 includes R4, R5, U2 and D2, the output current inspection
The sampling resistor of slowdown monitoring circuit 5 is sent to arcing omen discriminator circuit 6 for that will detect signal, and the arcing omen discriminator circuit 6 is used
Compared with it will detect signal voltage and the normal setting value of corona discharge state, judge whether arcing omen signal occur.The combustion
Arc condition destroys circuit 7 and includes U3, D3, R6 and T1, and the arcing condition destroys circuit 7 and is used to receive arcing omen examination electricity
Oscillation is closed during the action signal on road 6 and terminates transition transient state.It is described it is automatic restart circuit 8 and include C4, it is described to restart circuit automatically
8 are used to that device to be made to automatically return to corona discharge state again.
Specific embodiment：
As shown in Fig. 2 circuit main flow schematic diagrames, power circuit 1 includes current rectifying and wave filtering circuit and DC-DC conversion circuit, will
Alternating current is converted to direct current 12V and powers to each unit circuit.Oscillating circuit 2 determines frequency of oscillation, chip U1 amplification letters by C1 and R1
Number, the isolating transformer L1 through driving circuit 3 is sent to half-bridge high-voltage output circuit 4, and high pressure is applied to by T1, T2 and C2, C3
The primary of L2 is wrapped, the detection that the high direct voltage output after high voltage package secondary Transformer Rectifier is connected to output current detection circuit 5 is returned
Road, the sampling resistor of current detection circuit 5 will detect signal and be sent to arcing omen discriminator circuit 6, and whether U2 detectings arcing occur
Once finding that arcing omen signal is immediately communicated to arcing condition and destroys circuit 7, C4 electricity is dragged down through U3 drivings T1 for omen signal
Pressure is rapid to close oscillation, stops High voltage output so that transition transient state to be prevented to enter arcing state.The C4 quilts of circuit 8 are then restarted automatically
Constant current source charging inside U1, voltage recovery make circuit vibrate recovery High voltage output again, come back to corona discharge state, so as to
Reach arcing and inhibit protection purpose.
It is characterized in that：High direct voltage output current is transformed into detection signal voltage by the sampling resistor of current detection circuit 5；
U2 and surrounding component composition arcing omen discriminator circuit 6, by detection signal voltage compared with the normal setting value of corona discharge state,
Judge whether arcing omen signal occur；Arcing condition destroys circuit 7 and includes U3, D3, R6 and T1, discriminates receiving arcing omen
Oscillation is closed during the action signal of other circuit 6 and terminates transition transient state；It is automatic restart circuit 8 device made to automatically return to corona again put
Electricity condition.
Above-described embodiment is the explanation to the utility model, is not the restriction to the utility model, any new to this practicality
Scheme after type simple transformation belongs to the scope of protection of the utility model.
Claims (6)
1. a kind of safety-type high voltage power supply, it is characterised in that：Including power circuit (1), oscillating circuit (2), driving circuit (3),
High-voltage output circuit (4), output current detection circuit (5), arcing omen discriminator circuit (6), arcing condition destroy circuit (7) and
Automatically restart circuit (8), the output terminal of the oscillating circuit (2) is connected to the input terminal of driving circuit (3), the driving circuit
(3) output terminal is connected to the input terminal of high-voltage output circuit (4), and the output terminal of the high-voltage output circuit (4) is connected to defeated
Go out the input terminal of current detection circuit (5), the output terminal of the output current detection circuit (5) is connected to arcing omen and screens electricity
The input terminal on road (6), the output terminal of the arcing omen discriminator circuit (6) are connected to the input that arcing condition destroys circuit (7)
End, the output terminal of the arcing condition destruction circuit (7) is connected to the control terminal of oscillating circuit (2), described to restart circuit automatically
(8) control terminal with oscillating circuit (2) is connected.
2. a kind of safety-type high voltage power supply as described in claim 1, it is characterised in that：The power circuit (1) is including rectification
Filter circuit and DC-DC conversion circuit, the power circuit (1) supply for alternating current to be converted to direct current 12V to each unit circuit
Electricity.
3. a kind of safety-type high voltage power supply as described in claim 1, it is characterised in that：The oscillating circuit (2) is including U1, C1
And R1, the driving circuit (3) include L1, R2 and R3, the high-voltage output circuit (4) includes T1, T2, C2, C3 and L3, described
Oscillating circuit (2) determines frequency of oscillation, chip U1 amplified signals by C1 and R1, and the isolating transformer L1 through driving circuit (3) is sent
To half-bridge high-voltage output circuit (4), the primary of high voltage package L2 is applied to by T1, T2 and C2 of high-voltage output circuit (4), C3,
High direct voltage output after high voltage package secondary Transformer Rectifier is connected to the measure loop of output current detection circuit (5).
4. a kind of safety-type high voltage power supply as described in claim 1, it is characterised in that：The arcing omen discriminator circuit (6)
Including R4, R5, U2 and D2, the sampling resistor of the output current detection circuit (5) is sent to arcing omen for that will detect signal
Discriminator circuit (6), the arcing omen discriminator circuit (6) will be for will detect signal voltage and the normal setting value of corona discharge state
Compare, judge whether arcing omen signal occur.
5. a kind of safety-type high voltage power supply as described in claim 1, it is characterised in that：The arcing condition destroys circuit (7)
Including U3, D3, R6 and T1, the arcing condition destroys circuit (7) in the action letter for receiving arcing omen discriminator circuit (6)
Number when close oscillation terminate transition transient state.
6. a kind of safety-type high voltage power supply as described in claim 1, it is characterised in that：It is described automatic to restart circuit (8) and include
C4, it is described to restart circuit (8) automatically for device to be made to automatically return to corona discharge state again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720906024.2U CN207546760U (en) | 2017-07-25 | 2017-07-25 | A kind of safety-type high voltage power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720906024.2U CN207546760U (en) | 2017-07-25 | 2017-07-25 | A kind of safety-type high voltage power supply |
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| Publication Number | Publication Date |
|---|---|
| CN207546760U true CN207546760U (en) | 2018-06-29 |
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ID=62672144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720906024.2U Active CN207546760U (en) | 2017-07-25 | 2017-07-25 | A kind of safety-type high voltage power supply |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107442283A (en) * | 2017-07-25 | 2017-12-08 | 长兴友邦电器有限公司 | A kind of safety-type high voltage power supply |
-
2017
- 2017-07-25 CN CN201720906024.2U patent/CN207546760U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107442283A (en) * | 2017-07-25 | 2017-12-08 | 长兴友邦电器有限公司 | A kind of safety-type high voltage power supply |
| CN107442283B (en) * | 2017-07-25 | 2024-05-28 | 长兴友邦电器有限公司 | Safe high-voltage power supply |
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