CN105007679B - The control circuit of batch (-type) high-frequency arc strike power supply - Google Patents
The control circuit of batch (-type) high-frequency arc strike power supply Download PDFInfo
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Abstract
A kind of control circuit of batch (-type) high-frequency arc strike power supply, it is related to a kind of high-frequency electrical source control circuit, it is made up of vibration door, inverse gate, delay gate, the first out gate, the second out gate and intermittent control circuit, wherein, vibration door, inverse gate, delay gate, the first out gate and the second out gate are made up of five not gates in six ungated integrated circuits, intermittent control circuit is made up of interval door, potentiometer and interval capacitor, a not gate in interval Men Weiliu ungated integrated circuits；Oscillating capacitor is connected between the input of vibration door and ground wire, and oscillation resistance is connected between the output end of the input of vibration door and vibration door；Interval capacitor is connected between the input of interval door and ground wire, and three terminations of potentiometer are connected between the output end of the input of interval door and interval door after being connected as variable resistor mode.The present invention makes plasma torch reduce power consumption, saves electric energy, and extend the service life of high-frequency arc strike power supply.
Description
Technical field
The present invention relates to a kind of electronic circuit, a kind of high-frequency electrical source control circuit is related specifically to.
Background technology
High frequency switch power has the characteristics of high efficiency and miniaturization due to eliminating Industrial Frequency Transformer, raw in industry
Produce, environmental protection and modern communicationses field are used widely.
Currently, plasma technology has been widely used, and is industrially applied to plasma ignition, plasma coal gas
Change, the hydrogen manufacturing of plasma pyrolysis water, the disposal of industrial harmful substance, Medical Wastes Disposal, consumer waste innocent and energy disposal.
Made a world of difference with plasma disposal of commercial harmful substance, medical waste, the mode of house refuse and general burning mode, etc.
Gas ions are a kind of states formed under ionosphere or electric discharge phenomena, and discharge process causes that work gas molecule loses outer layer electricity
Son and form ionic condition, produce high temperature through mutually collision, the central temperature of plasma flare may be up to 50,000 degree Celsius with
On, torch lip temperature also can reach more than 3,000 degree, and processed industrial harmful substance, medical waste, junk is by height
During the plasma attack of warm high pressure, its molecule, atom will be reconfigured and generate new material, so that nuisance qualitative change
It is innocuous substance.Using plasma torch being sprayed into again in Domestic garbage gasification furnace or coal after steam gasification agent heat resolve
Is chemically reacted with coke in gasification furnace, the reaction for occurring is exothermic reaction, can for gasification furnace provide raw material stoving with
Heat needed for pyrolysis, so that gasification furnace is not required to input air or oxygen, the fraction scale of hydrogen is high in the synthesis gas of production,
The content of waste gas is low, can be utilized as the unstripped gas of production methyl alcohol.Gasifying agent is done with plasma torch heat resolve water vapour
Coming gasification of coal or rubbish will be as first-selection from now on, and in atmospheric conditions, temperature hydrone in 2000K is hardly decomposed,
The water for having 25% during 2500K is decomposed, and the molar fraction of hydrogen and oxygen reaches maximum, respectively 18% during 3400~3500K
With 6%, when temperature reaches 4200K, hydrone will all be decomposed into hydrogen, hydrogen, oxygen, oxygen and hydrogen-oxygen atomic group, it is general plus
Hot mode is difficult to reach temperature so high, and is then easily done using plasma torch.
The arcing of general plasma torch outside spray gun, and be used to decomposing the plasma torch of water vapour with
General plasma torch is different, in order to realize that water-molecule dissociation be hydrogen and oxygen, the resolution ratio of hydrone is improved, for decomposing
The plasma torch of water vapour its arcing is multistage electric arc series connection, high-temperature plasma electricity in the inside of spray gun
The energy of arc is concentrated on the hydrone acted in spray gun, makes hydrone be easy to decompose, and decomposition efficiency is high.This kind of plasma
Spray gun needs the high voltage power supply to carry out striking, makes to produce plasma arc in spray gun.
The content of the invention
It is an object of the invention to provide a kind of control circuit of batch (-type) high-frequency arc strike power supply, reduce plasma torch
Power consumption, saves electric energy, and extend the service life of high-frequency arc strike power supply.
A kind of control circuit of batch (-type) high-frequency arc strike power supply of the invention, including resistance, capacitor, diode and six are non-
Door integrated circuit, the power input of six ungated integrated circuits is connected to working power interface, the ground connection of six ungated integrated circuits
End is connected to ground wire, it is characterized in that the electric route flapping door IC1 of control, inverse gate IC2, delay gate IC3, the first out gate IC4, the
Two out gate IC5 and intermittent control circuit are constituted, wherein, vibration door IC1, inverse gate IC2, delay gate IC3, the first out gate
IC4 and the second out gate IC5 is made up of five not gates in six ungated integrated circuits, and intermittent control circuit is by interval door IC6, electricity
Position device RP and interval capacitor C7 is constituted, and interval door IC6 is a not gate in six ungated integrated circuits；Oscillating capacitor C5 connects
It is connected between the input of vibration door IC1 and ground wire, oscillation resistance R3 is connected to the input and vibration door IC1 of vibration door IC1
Output end between, the output end of vibration door IC1 is connected to the first pin, the sun of the first isolating diode VD3 of dead band resistance R4
Pole and the input of inverse gate IC2, the crus secunda of dead band resistance R4 are connected to first pin of delay capacitor C6, delay gate IC3
Input and the second isolating diode VD4 anode, the crus secunda of delay capacitor C6 is connected to ground wire；Inverse gate IC2's
Output end is connected to the anode of the 3rd isolating diode VD5, the 4th isolating diode that the output end of delay gate IC3 is connected to
VD6 anodes, the negative electrode of the 3rd isolating diode VD5 and the negative electrode of the 4th isolating diode VD6 are connected to the first out gate IC4's
Input, the output end of the first out gate IC4 constitutes the preceding half cycle signal output part of cycle of oscillation；First isolating diode VD3
Negative electrode and the negative electrode of the second isolating diode VD4 be connected to the input of the second out gate IC5, the second out gate IC5's is defeated
Go out the second half signal output part that end constitutes cycle of oscillation；Interval capacitor C7 is connected to the input and ground wire of interval door IC6
Between, three terminations of potentiometer RP are connected as after variable resistor mode being connected to the input and interval door IC6 of interval door IC6
Output end between, the output end of interval door IC6 is connected to the anode and the 6th isolating diode of the 5th isolating diode VD7
The anode of VD8, the negative electrode of the 5th isolating diode VD7 is connected to the input of the first out gate IC4, the 6th isolating diode
The negative electrode of VD8 is connected to the input of the second out gate IC5.
In the present invention, there are pause switch RK, pause switch RK operations between the output end of potentiometer RP and interval door IC6
Bar is interconnected with the action bars of potentiometer RP；There is first to be close to road resistance between the input and ground wire of the first out gate IC4
R5；There is second to be close to road resistance R6 between the input and ground wire of the second out gate IC5；There is overcurrent protection electricity in circuit is controlled
Road, current foldback circuit is made up of phase-reversing tube VT, biasing resistance R7, isolation resistance R8 and feedback diode VD9, feedback diode
The negative electrode of VD9 constitutes over-current signal input, and the anode of feedback diode VD9 is connected to the crus secunda of biasing resistance R7 and anti-phase
The base stage of pipe VT, first pin of biasing resistance R7 and the emitter stage of phase-reversing tube VT are connected to ground wire, and the colelctor electrode of phase-reversing tube VT connects
The crus secunda of isolation resistance R8 and the input of interval door IC6 are connected to, first pin of isolation resistance R8 is connected to working power and connects
Mouthful；Control circuit is made control module, oscillating capacitor C5, the oscillation resistance R3 and potentiometer RP in control circuit are arranged on
The periphery of control module, has working power interface 4, the first vibration end 2, the second vibration end 3, preceding half-cycle signal defeated in control module
Go out end 5, second half signal output part 6, the first adjustable side 9, the second adjustable side 8, over-current signal input 10 and interface of the ground wire 7,
First pin of oscillating capacitor C5 and first pin of oscillation resistance R3 are connected to the input of vibration door IC1 by the first vibration end 2
End, the crus secunda of oscillation resistance R3 is connected to the output end of vibration door IC1, preceding half cycle signal output part 5 by the second vibration end 3
The output end of the first out gate IC4 is connected to, second half signal output part 6 is connected to the output end of the second out gate IC5, current potential
The left end of device RP is connected to the input of interval door IC6 by the first adjustable side 9, and the right-hand member of potentiometer RP passes through the second adjustable side
8 output ends for being connected to interval door IC6, over-current signal input 10 is connected to the negative electrode of feedback diode VD9, oscillating capacitor
The crus secunda and interface of the ground wire 7 of C5 are connected on the peripheral ground wire of control module.
High-frequency arc strike power supply is applied in plasma torch ignition system, and the high-frequency arc strike power supply is switching mode electricity
Source, its working frequency is 10-100KHz, and high frequency switch power has the characteristics of high efficiency and miniaturization.Generally, wait from
Daughter spray gun needs high voltage power supply striking in starting ignition, after striking successfully produces plasma arc, so that it may stop striking,
Plasma torch is kept to run by maintenance electric current, but this needs have enough ends between the anode of plasma torch and negative electrode
Voltage maintains electric current, and otherwise, plasma torch can blow-out.In order to reduce power consumption and improve the effect of ion spray gun body
Rate, the terminal voltage reduced between plasma torch anode and negative electrode can obtain significant effect, but in order to avoid plasma
Spray gun body stops working, and still needs to keep high voltage power supply striking, and this causes that high-frequency arc strike power supply needs long-term work, and high-frequency arc strike power supply is long-term
Work need to consume electric energy and have influence on the service life of high-frequency arc strike power supply.During carrying out practically, during the striking of plasma torch
Between less than one second, after plasma torch striking successfully produces plasma arc, its arc current presses plasma torch
Terminal voltage between anode and negative electrode is different and has the inertia of several seconds to several minutes time, such as plasma torch striking into
After work(produces plasma arc, in the intermittent output high pressure of high-frequency arc strike power supply to plasma torch, make its intermittent time
Less than suspending striking in the inertia time of arc current, it is possible to reducing the electricity of the end between plasma torch anode and negative electrode
After pressure, remain to keep plasma torch not stop working, reach the purpose for saving electric energy, and extend the use of high-frequency arc strike power supply
Life-span.
The control circuit of batch (-type) high-frequency arc strike power supply of the invention is applied in high-frequency arc strike power supply, its operation principle
It is：Rectangular wave pulse is produced by vibration door IC1, frequency of oscillation is determined by the value of oscillation resistance R3 and oscillating capacitor C5, i.e. f=
1/1.4RC, vibration door IC1 is output as the alternate rectangular wave pulse of low and high level, when the output end of vibration door IC1 is rectangular pulse
During the high level of ripple, high level is transported to the input of inverse gate IC2, makes the output end of inverse gate IC2 in low level, meanwhile,
The high level for vibrating door IC1 output ends is charged and by the first isolation two by dead band resistance R4 to delay capacitor C6
Pole pipe VD3 is input to the input of the second out gate IC5, makes the output end of the second out gate IC5 in low level, the second out gate
The output end of IC5 does not have switching signal to export；The charging interval of delay capacitor C6 is half cycle switching signal before rectangular wave pulse
Dead Time, when the charging voltage of delay capacitor C6 is less than 2/3 operating voltage, the output end of delay gate IC3 is electricity high
Flat, the output end of the first out gate IC4 is locked in low level, and the output end of the first out gate IC4 does not have switching signal to export,
Until when the charging voltage of delay capacitor C6 reaches 2/3 operating voltage, the output end of delay gate IC3 is reversed to low level, makes
First out gate IC4 output switching signals；When the rectangular wave pulse for vibrating door IC1 output ends is reversed to low level, inverse gate
The output end of IC2 is in high level, and the high level of inverse gate IC2 output ends is input to the input of the first out gate IC4, makes first
The output end of out gate IC4 is reversed to low level, and the output end of the first out gate IC4 stops output switching signal, meanwhile, postpone
Capacitor C6 is discharged by dead band resistance R4, and the discharge time of delay capacitor C6 believes for rectangular wave pulse second half is switched
Number Dead Time, in the discharge process of delay capacitor C6, the input of the second out gate IC5 is high level, and second is defeated
Go out IC5 output end in low level, the output end of the second out gate IC5 is exported still without switching signal, until delay electric capacity
Device C6 is discharged to during less than 1/3 operating voltage, and the output end of the second out gate IC5 is reversed to high level, the second out gate IC5's
Output end output switching signal；Alternately output has extremely the output end of the output end of the first out gate IC4 and the second out gate IC5
The switching signal of area's time.The above-mentioned situation for when pause switch RK disconnects, when pause switch RK is closed, by interval door IC6,
The intermittent control circuit that potentiometer RP and interval capacitor C7 is constituted enters work, and interval capacitor C7 is carried out by potentiometer RP
Charging and discharging, makes the input and output end of interval door IC6 occur high level and low level repeatedly, as interval door IC6 repeatedly
Input when being low level, the output end of interval door IC6 is high level, and the high level of interval door IC6 output ends passes through respectively
5th isolating diode VD7, the 6th isolating diode VD8 are transported to the input and the second out gate IC5 of the first out gate IC4
Input, make the output end of the first out gate IC4 and the second out gate IC5 output end suspend output switching signal, when
When the input of an IC6 of having a rest is high level, the output end of interval door IC6 is low level, the 5th isolating diode VD7 and the 6th every
Prevent the switching signal of the input of the input and the second out gate IC5 of the first out gate IC4 to pour in down a chimney from diode VD8, make
The output end of the output end of the first out gate IC4 and the second out gate IC5 recovers output switching signal, by interval door IC6's
There is high level and low level situation repeatedly in input and output end, export the first out gate IC4 and the second out gate IC5
Intermittent switching signal, so that high-frequency arc strike power supply exports intermittent high-voltage arc strike power supply and is supplied to plasma to spray
Rifle, makes plasma torch save electric energy in the case where not stopping working.During specific implementation, in the input of interval door IC6 and defeated
Go out setting discharge resistance R27 and discharge diode VD19 between end, make the discharge time of interval capacitor C7 less than the charging interval,
So that the low level time of interval door IC6 inputs is more than high level time so that the first out gate IC4 output ends and second
Being more than without switch signal time for out gate IC5 output ends has switch signal time, and such setting meets plasma torch
Striking deficiency of time one second, plasma torch striking success electric arc there is the several seconds to several minutes time inertia.
There are drive circuit and power boost circuit in high-frequency arc strike power supply, power boost circuit is by power switch pipe and liter
Pressure transformer is constituted, and power switch pipe includes the first power switch pipe V14 and the second power switch pipe V24, step-up transformer bag
Include primary coil and secondary high pressure coil.During work, the output end and the second out gate of the first out gate IC4 in control circuit
The switching signal of the output end of IC5 alternately output is to drive circuit；Drive circuit is by the first drive circuit and the second drive circuit
Constitute, the first drive circuit and the second drive circuit is mutually isolated and structure is identical, the preceding half cycle of the first out gate IC4 outputs
Switching signal turns on the first power switch pipe V14 by the first drive circuit, the second half switch of the second out gate IC5 outputs
Signal turns on the second power switch pipe V24 by the second drive circuit, due to the first out gate IC4 and the second out gate IC5
Alternately output switching signal, therefore, the first power switch pipe V14 and the second power switch pipe V24 alternate conductions so that rise buckling
Alternating current is flowed through in the primary low-voltage coil of depressor, secondary high pressure coil just senses the height electricity for producing tens thousand of to hundreds thousand of volts
Pressure.During specific implementation, the Dead Time of circuit will be controlled to be set to be slightly greater than the storage time of power switch pipe, first can be avoided
There is common conduct and cause to damage in power switch pipe V14 and the second power switch pipe V24.In the present invention, only when vibration door
When the output end of IC1 is all high level with the positive pole of delay capacitor C6, the output end of the first out gate IC4 could output switch
Signal, and the positive pole of delay capacitor C6 can only could be in high level after the time that setting charges to 2/3 operating voltage reaches；
Similarly, only when the positive pole of the output end and delay capacitor C6 that vibrate door IC1 is all low level, the second out gate IC5's
Output end ability output switching signal, and the positive pole of delay capacitor C6 can only be discharged to the time of 1/3 operating voltage in setting
Could be in low level after reaching, therefore, the present invention set by dead zone function circuit it is possible to prevente effectively from upper power switch pipe and
Lower power switch pipe common conduct.
In order to avoid power switch pipe overcurrent damage, when the electric current for flowing through power switch pipe reaches set-point, sampling electricity
Stream turns on phase-reversing tube VT by feedback resistance R26 and feedback diode VD9, and phase-reversing tube VT conductings make the input of interval door IC6
End is forced low level, and it is defeated to the input of the first out gate IC4 and second that the output end of interval door IC6 just exports high level
Go out the input of IC5 so that the output end of the output end of the first out gate IC4 and the second out gate IC5 is in low level, first
Power switch pipe V14 and the second power switch pipe V24 ends simultaneously, realizes by all overcurrent protections.
In the present invention, it is opened or closed by operating pause switch RK, it is possible to achieve high-frequency arc strike power supply continuously exports height
Pressure striking voltage or interrupted output high-voltage arc strike voltage；Change the interval of striking voltage by operating potentiometer RP to adjust resistance
Time span.
In the present invention, control to be used with ungated integrated circuit as master element in circuit structure, ungated integrated circuit is number
Word circuit, is especially suitable for the formation and control of rectangular wave pulse, and the switching signal that it is produced is used for driving power switching tube
Match very much, cmos digital integrated circuit or a kind of Micro Energy Lose element, with supply voltage working range is wide, antijamming capability
By force, input impedance is high, circuit interface is simple, reliable operation and the characteristics of long service life so that the present invention have simple structure,
Reliable operation, efficiency high and it is easy to operate the characteristics of, when in the high-frequency arc strike power supply of plasma torch using when, make etc. from
Daughter spray gun working stability and saving electric energy.During specific implementation, ungated integrated circuit is anti-from the CMOS six of model CC40106
Phase device digital integrated electronic circuit.
The beneficial effects of the invention are as follows：The control circuit of a kind of batch (-type) high-frequency arc strike power supply for providing, using plasma
The characteristics of its arc current has inertia after spray gun body striking success, makes high-frequency arc strike power supply apply interval to plasma torch
Property striking voltage, to reach do not stop working after the terminal voltage for reducing plasma torch and remain to stable operation, realize saving the mesh of electric energy
, and extend the service life of high-frequency arc strike power supply.
Brief description of the drawings
Accompanying drawing 1 is a kind of electric operation control circuit figure of batch (-type) high-frequency arc strike power supply of the invention.
Accompanying drawing 2 is the circuit diagram that batch (-type) control circuit of the invention is applied in high-frequency arc strike power supply.
In figure：R1. the first dropping resistor, the dropping resistors of R2. second, R3. oscillation resistances, R4. dead bands resistance, R5. first
It is close to road resistance, R6. second is close to road resistance, and R7. biasing resistances, R8. isolation resistances, R9. first throttle resistance, R10. second throttles
Resistance, the biasing resistors of R11. first, the load resistances of R12. first, the current-limiting resistances of R13. first, R14. first drives resistance, R21.
Second biasing resistor, the load resistances of R22. second, the current-limiting resistances of R23. second, the driving resistance of R24. second, R25. sample resistances,
R26. feedback resistance, R27. discharge resistances, RP. potentiometers, RK. pause switches, the voltage-dividing capacitors of C1. first, the partial pressures of C2. second
Between capacitor, the filter condensers of C3. first, the filter condensers of C4. second, C5. oscillating capacitors, C6. delay capacitors, C7.
Have a rest capacitor, C8. anti-interference condensers, C9. capacitive reactance devices, the voltage-regulator diodes of VD1. first, the voltage-regulator diodes of VD2. second, VD3.
First isolating diode, the isolating diodes of VD4. second, the isolating diodes of VD5. the 3rd, the isolating diodes of VD6. the 4th, VD7.
5th isolating diode, the isolating diodes of VD8. the 6th, VD9. feedback diodes, the clamp diodes of VD10. first, VD11.
Two clamp diodes, VD12~14. limiter diode, VD15~18. bridge rectifier, VD19. discharge diodes, VT. is anti-
The shaping tube of Xiang Guan, V11. first, V12. first drives and manages, and V13. first drives down tube, the power switch pipes of V14. first, V21.
Second shaping tube, V22. second drives and manages, and V23. second drives down tube, and the power switch pipes of V24. second, IC1. vibrates door,
IC2. inverse gate, IC3. delay gates, the out gates of IC4. first, the out gates of IC5. second, IC6. interval doors, the optocouplers of IC7. first
Device, the optical couplers of IC8. second, FU. fuses, T. step-up transformers, WL. primary coils, WH. secondary high pressure coils, 1. direct current confession
Electric line, 2. the first vibration end, 3. the second vibration end, 4. working power interface, 5. before half cycle signal output part, 6. second half letter
Number output end, 7. interface of the ground wire, 8. the second adjustable side, 9. the first adjustable side, 10. over-current signal input, 11. over-current signals are defeated
Go out end, 12. first high-voltage output ends, 13. second high-voltage output ends, 14. alternating current phase line input interfaces, 15. alternating current zero lines
Input interface.
Specific embodiment
In implementation method shown in the Fig. 1 of embodiment 1, the control circuit of batch (-type) high-frequency arc strike power supply is integrated with six not gates
Circuit is master element, and the power input of six ungated integrated circuits is connected to working power interface, six ungated integrated circuits
Earth terminal is connected to ground wire, the electric route flapping door IC1 of control, inverse gate IC2, delay gate IC3, the first out gate IC4, second defeated
Go out IC5 and intermittent control circuit composition, wherein, vibration door IC1, inverse gate IC2, delay gate IC3, the first out gate IC4 and
Second out gate IC5 is made up of five not gates in six ungated integrated circuits, and intermittent control circuit is by interval door IC6, potentiometer
RP, pause switch RK and interval capacitor C7 are constituted, and interval door IC6 is a not gate in six ungated integrated circuits；Vibration electricity
Container C5 is connected between the input of vibration door IC1 and ground wire, and oscillation resistance R3 is connected to the input of vibration door IC1 and shakes
Swing between the output end of an IC1, the output end of vibration door IC1 is connected to the first pin, first isolating diode of dead band resistance R4
The anode of VD3 and the input of inverse gate IC2, the crus secunda of dead band resistance R4 are connected to first pin of delay capacitor C6, prolong
The input of slow door IC3 and the anode of the second isolating diode VD4, the crus secunda of delay capacitor C6 are connected to ground wire；It is anti-phase
The output end of door IC2 is connected to the anode of the 3rd isolating diode VD5, the 4th isolation that the output end of delay gate IC3 is connected to
Diode VD6 anodes, the negative electrode of the 3rd isolating diode VD5 and the negative electrode of the 4th isolating diode VD6 are connected to the first output
The input of door IC4 and the first the first pin for being close to road resistance R5, the first crus secunda for being close to road resistance R5 are connected to ground wire, and first is defeated
Go out IC4 output end constitute cycle of oscillation preceding half cycle signal output part；The negative electrode of the first isolating diode VD3 and second every
The input of the second out gate IC5 and second being connected to from the negative electrode of diode VD4 and being close to first pin of road resistance R6, second is close to road
The crus secunda of resistance R6 is connected to ground wire, and the output end of the second out gate IC5 constitutes the second half signal output part of cycle of oscillation；
Interval capacitor C7 is connected between the input of interval door IC6 and ground wire, and three terminations of potentiometer RP are connected as can power transformation
Resistance mode, pause switch RK action bars is interconnected with the action bars of potentiometer RP, carries out same bar operation, the left end of potentiometer RP
The input of interval door IC6 is connected to, the right-hand member of potentiometer RP is connected to the output end of interval door IC6 by pause switch RK,
The output end of interval door IC6 is connected to the anode of the 5th isolating diode VD7 and the anode of the 6th isolating diode VD8, the 5th
The negative electrode of isolating diode VD7 is connected to the input of the first out gate IC4, and the negative electrode of the 6th isolating diode VD8 is connected to
The input of the second out gate IC5.In the present embodiment, there is current foldback circuit in circuit is controlled, current foldback circuit is by anti-
Phase pipe VT, biasing resistance R7, isolation resistance R8 and feedback diode VD9 are constituted, and the negative electrode of feedback diode VD9 constitutes excessively stream letter
Number input, the anode of feedback diode VD9 is connected to the crus secunda of biasing resistance R7 and the base stage of phase-reversing tube VT, biasing resistance
First pin of R7 and the emitter stage of phase-reversing tube VT are connected to ground wire, and the colelctor electrode of phase-reversing tube VT is connected to the second of isolation resistance R8
The input of pin and interval door IC6, first pin of isolation resistance R8 is connected to working power interface.When the control the present embodiment
Circuit is made control module, oscillating capacitor C5, oscillation resistance R3 and potentiometer RP is arranged on the periphery of control module, control
There are working power interface 4, the first vibration end 2, the second vibration end 3, preceding half cycle signal output part 5, second half signal defeated in module
Go out end 6, the first adjustable side 9, the second adjustable side 8, over-current signal input 10 and interface of the ground wire 7, the first of oscillating capacitor C5
First pin of pin and oscillation resistance R3 is connected to the input of vibration door IC1, the second of oscillation resistance R3 by the first vibration end 2
Pin is connected to the output end of vibration door IC1 by the second vibration end 3, and preceding half cycle signal output part 5 is connected to the first out gate IC4
Output end, second half signal output part 6 is connected to the output end of the second out gate IC5, and the left end of potentiometer RP passes through first
Adjustable side 9 is connected to the input of interval door IC6, and the right-hand member of potentiometer RP is connected to interval door IC6's by the second adjustable side 8
Output end, over-current signal input 10 is connected to the negative electrode of feedback diode VD9, and the crus secunda and ground wire of oscillating capacitor C5 connect
Mouth 7 is connected on the peripheral ground wire of control module.In this implementation, CMOS six of the ungated integrated circuit from model CC40106
Phase inverter digital integrated electronic circuit.
In implementation method shown in the Fig. 2 of embodiment 2, the control module being made up of the control circuit of first embodiment is in height
Applied in frequency striking arc power supply, high-frequency arc strike power supply is main by power supply input circuit, control module, drive circuit and power boost electricity
Road constitutes, wherein, the internal circuit of control module is basically the same as those in the first embodiment, and repeats no more.In power supply input circuit, the
It is connected between direct current supply line 1 and ground wire after one voltage-dividing capacitor C1 and the second voltage-dividing capacitor C2 series connection, the first step-down
First pin of resistance R1 is connected to the positive pole of the voltage-dividing capacitor C1 of direct current supply line 1 or first, the of the first dropping resistor R1
Two pin, the positive pole of the first filter condenser C3 constitute the first driving power supply after being connected with the negative electrode of the first voltage-regulator diode VD1, the
The negative pole of one filter condenser C3 constitutes suspension ground terminal after being connected with the anode of the first voltage-regulator diode VD1；Second dropping resistor
First pin of R2 is connected to the crus secunda of the first dropping resistor R1, the crus secunda of the second dropping resistor R2, the second filter condenser
The positive pole of C4 constitutes the second driving power supply after being connected with the negative electrode of the second voltage-regulator diode VD2, the second filter condenser C4's is negative
Pole constitutes ground wire after being connected with the anode of the second voltage-regulator diode VD2；The working power interface 4 of control module is connected to the second drive
Dynamic power supply, the interface of the ground wire 7 of control module is connected to the ground wire of peripheral circuit, first pin and oscillation resistance of oscillating capacitor C5
First pin of R3 is connected to the first vibration end 2 of control module, and the crus secunda of oscillation resistance R3 is connected to the second of control module
Vibration end 3, the left end of potentiometer RP and first pin of discharge resistance R27 are connected to the first adjustable side 9 of control module, potentiometer
The left end of RP is connected to the second adjustable side 8 of control module by pause switch RK, and the crus secunda of discharge resistance R27 is connected to be put
The anode of electric diode VD19, the negative electrode of discharge diode VD19 is connected to the second adjustable side 8 of control module.Drive circuit by
First drive circuit and the second drive circuit are constituted, and the first drive circuit and the second drive circuit are constituted and be mutually isolated, wherein, the
One drive circuit is the drive circuit of preceding half cycle switching signal, and the second drive circuit is the drive circuit of second half switching signal,
Each driving circuit structure is identical, by throttling resistance, optical coupler, biasing resistor, load resistance, current-limiting resistance, shaping tube, driving
Upper pipe and driving down tube are constituted, and the crus secunda of the resistance that throttles is connected to the anode of optical coupler input side, the moon of optical coupler input side
Pole is connected to ground wire, and the colelctor electrode of optical coupler outlet side is connected to the crus secunda of biasing resistor and the base stage of shaping triode, whole
The colelctor electrode of shape triode is connected to the crus secunda of load resistance, the base stage of pipe and the base stage of down tube is driven in driving, in driving
The colelctor electrode of pipe is connected to the crus secunda of current-limiting resistance, and the emitter stage of pipe is connected to the emitter stage for driving down tube, first in driving
Colelctor electrode, the emitter stage of optical coupler outlet side and the emitter stage of shaping tube of down tube is driven to be connected to suspension ground in drive circuit
End, the first pin of the first pin of biasing resistor, the first pin of load resistance and current-limiting resistance is connected to the in the first drive circuit
One driving power supply；Colelctor electrode, the transmitting of the emitter stage and shaping tube of optical coupler outlet side of down tube are driven in second drive circuit
Pole is connected to ground wire, the first of the first pin of biasing resistor, the first pin of load resistance and current-limiting resistance in the second drive circuit
Pin is connected to the second driving power supply；The preceding half-cycle signal that the throttling pin of resistance first of the first drive circuit is connected to control module is defeated
Go out end 5, the throttling pin of resistance first of the second drive circuit is connected to the second half signal output part 6 of control module.Power boost
Circuit is made up of driving resistance, power switch pipe, step-up transformer T and capacitive reactance device C9, and step-up transformer T includes primary coil WL
With secondary high pressure coil WH；Driven by first after pipe emitter stage and the emitter stage connection of driving down tube in the driving of the first drive circuit
Dynamic resistance R14 is connected to the grid of the first power switch pipe V14, pipe emitter stage and driving down tube in the driving of the second drive circuit
The grid of the second power switch pipe V24 is connected to after emitter stage connection by the second driving resistance R24；First power switch pipe
The drain electrode of V14 is connected to the positive pole of the voltage-dividing capacitor C1 of direct current supply line 1 or first, the source electrode of the first power switch pipe V14
The drain electrode of suspension ground terminal and the second power switch pipe V24 is connected to, the source electrode of the second power switch pipe V24 is connected to sample resistance
The crus secunda of R25 and the anode of limiter diode VD12~14, limiter diode VD12~14 are by three diode series aiding connections
Constitute, first pin of sample resistance R25 and the negative electrode of limiter diode VD12~14 are connected to ground wire；First power switch pipe
The primary line of step-up transformer T is connected to after the drain electrode connection of the source electrode of V14 and the second power switch pipe V24 by capacitive reactance device C9
The tail end of WL is enclosed, capacitive reactance device C9 is made up of non-polar condenser, and the head end of primary coil WL is connected to the first voltage-dividing capacitor C1
Negative pole and the second voltage-dividing capacitor C2 positive pole, the negative pole of the second voltage-dividing capacitor C2 is connected to ground wire；Opened in the second power
There is over-current signal output end 11 to pick out on the connection line of source electrode sample resistance the first pin of R25 for closing pipe V24, over-current signal output
End 11 is connected to the over-current signal input 10 of control module by feedback resistance R26, in feedback resistance R26 and control module
There is anti-interference condenser C8 between the connection line and ground wire of over-current signal input 10.In the present embodiment, 220V alternating currents warp
Bridge rectifier constitutes direct current supply line 1.
The above embodiments are applied in the arc initiation device of plasma torch, when oscillation resistance R3 values are 5K Ω, shake
When swinging capacitor C5 values for 0.0033uF, vibration door IC1 output frequencies are the rectangular wave pulse of 43KHz.In the control module
There is intermittent control circuit, be opened or closed by operating pause switch RK, it is possible to achieve high-frequency arc strike power supply continuously exports high pressure
Striking voltage or interrupted output high-voltage arc strike voltage；When changing the interval of striking voltage by operating potentiometer RP to adjust resistance
Between length, using plasma torch striking success after its arc current there is inertia the characteristics of, make high-frequency arc strike power supply to etc.
The intermittent striking voltage of ion spray gun body applying, the not flame-out stabilization that remains to is transported after reaching the terminal voltage for reducing plasma torch
OK, realize saving the purpose of electric energy, and extend the service life of high-frequency arc strike power supply.
In the above embodiments, in the primary coil loops series connection capacitive reactance device C9 of step-up transformer, liter can not changed
Output voltage and power output are lifted in the case of pressure transformer coil transformation ratio, so that the efficiency of high-frequency arc strike power supply
It is improved.Generally, there is no capacitive reactance device in the primary coil loops of step-up transformer, during work, step-up transformer
The terminal voltage UL=1/2 V of primary coilin, the output voltage of step-up transformer secondary coil is equal to 1/2Vin×N2/N1×Ton/ T,
In formula, VinIt is direct current supply voltage, N2/N1It is the transformation ratio of step-up transformer coil, Ton/ T is the dutycycle of switching signal；
Connect capacitive reactance device C9 in the step-up transformer primary coil loops of the present embodiment, during work, capacitive reactance and the liter buckling of capacitive reactance device C9
The induction reactance composition composite impedance of depressor primary coil, therefore in the present embodiment, voltage and step-up transformer on capacitive reactance device C9
Voltage on primary coil adds up to 1/2 direct current supply voltage, due to advanced 90 ° of voltage on step-up transformer primary coil and
90 ° of voltage delay on capacitive reactance device C9, therefore, the terminal voltage UL=1/2 V of step-up transformer primary coilin+Uc, transformation of boosting
The output voltage of device secondary coil is equal to（1/2 Vin+Uc）×N2/N1×Ton/ T, in formula, UcIt is the terminal voltage on capacitive reactance device C9,
Its value approaches 1/2 Vin, by the capacitive reactance device C9 from suitable capacity so that do not changing step-up transformer coil transformation ratio
In the case of, the high voltage power supply of nearly double voltage is obtained, it is improved the efficiency of high-frequency arc strike power supply.
Claims (6)
1. a kind of control circuit of batch (-type) high-frequency arc strike power supply, including resistance, capacitor, diode and the integrated electricity of six not gates
Road, the power input of six ungated integrated circuits is connected to working power interface, and the earth terminal of six ungated integrated circuits is connected to
Ground wire, it is characterized in that the electric route flapping door of control（IC1）, inverse gate（IC2）, delay gate（IC3）, the first out gate（IC4）,
Two out gates（IC5）Constituted with intermittent control circuit, wherein, vibrate door（IC1）, inverse gate（IC2）, delay gate（IC3）, first
Out gate（IC4）With the second out gate（IC5）Be made up of five not gates in six ungated integrated circuits, intermittent control circuit by
Xie Men（IC6）, potentiometer（RP）With interval capacitor（C7）Constitute, interval door（IC6）It is one in six ungated integrated circuits
Not gate；Oscillating capacitor（C5）It is connected to vibration door（IC1）Input and ground wire between, oscillation resistance（R3）It is connected to vibration
Door（IC1）Input with vibration door（IC1）Output end between, vibrate door（IC1）Output end be connected to dead band resistance
（R4）The first pin, the first isolating diode（VD3）Anode and inverse gate（IC2）Input, dead band resistance（R4）
Two pin are connected to delay capacitor（C6）The first pin, delay gate（IC3）Input and the second isolating diode（VD4）Sun
Pole, delay capacitor（C6）Crus secunda be connected to ground wire；Inverse gate（IC2）Output end be connected to the 3rd isolating diode
（VD5）Anode, delay gate（IC3）The 4th isolating diode that is connected to of output end（VD6）Anode, the 3rd isolating diode
（VD5）Negative electrode and the 4th isolating diode（VD6）Negative electrode be connected to the first out gate（IC4）Input, first output
Door（IC4）Output end constitute cycle of oscillation preceding half cycle signal output part；First isolating diode（VD3）Negative electrode and second
Isolating diode（VD4）Negative electrode be connected to the second out gate（IC5）Input, the second out gate（IC5）Output end structure
Into the second half signal output part of cycle of oscillation；Interval capacitor（C7）It is connected to interval door（IC6）Input and ground wire it
Between, potentiometer（RP）Three terminations be connected as variable resistor mode after be connected to interval door（IC6）Input and interval door
（IC6）Output end between, interval door（IC6）Output end be connected to the 5th isolating diode（VD7）Anode and the 6th every
From diode（VD8）Anode, the 5th isolating diode（VD7）Negative electrode be connected to the first out gate（IC4）Input,
Six isolating diodes（VD8）Negative electrode be connected to the second out gate（IC5）Input.
2. the control circuit of a kind of batch (-type) high-frequency arc strike power supply according to claim 1, it is characterized in that in potentiometer
（RP）With interval door（IC6）Output end between have pause switch（RK）, pause switch（RK）Action bars and potentiometer（RP）'s
Action bars is interconnected.
3. the control circuit of a kind of batch (-type) high-frequency arc strike power supply according to claim 1, it is characterized in that in the first output
Door（IC4）Input and ground wire between there is first to be close to road resistance（R5）.
4. the control circuit of a kind of batch (-type) high-frequency arc strike power supply according to claim 1, it is characterized in that in the second output
Door（IC5）Input and ground wire between there is second to be close to road resistance（R6）.
5. the control circuit of a kind of batch (-type) high-frequency arc strike power supply according to claim 1, it is characterized in that in control circuit
In have current foldback circuit, current foldback circuit is by phase-reversing tube（VT）, biasing resistance（R7）, isolation resistance（R8）With feed back two poles
Pipe（VD9）Constitute, feedback diode（VD9）Negative electrode constitute over-current signal input, feedback diode（VD9）Anode connection
To biasing resistance（R7）Crus secunda and phase-reversing tube（VT）Base stage, biasing resistance（R7）The first pin and phase-reversing tube（VT）Hair
Emitter-base bandgap grading is connected to ground wire, phase-reversing tube（VT）Colelctor electrode be connected to isolation resistance（R8）Crus secunda and interval door（IC6）It is defeated
Enter end, isolation resistance（R8）The first pin be connected to working power interface.
6. the control circuit of a kind of batch (-type) high-frequency arc strike power supply according to claim 1, it is characterized in that control circuit
It is made control module, the oscillating capacitor in control circuit（C5）, oscillation resistance（R3）And potentiometer（RP）It is arranged on control mould
, there is working power interface the periphery of block in control module（4）, the first vibration end（2）, the second vibration end（3）, preceding half-cycle signal it is defeated
Go out end（5）, second half signal output part（6）, the first adjustable side（9）, the second adjustable side（8）, over-current signal input（10）With
Interface of the ground wire（7）, oscillating capacitor（C5）The first pin and oscillation resistance（R3）The first pin pass through the first vibration end（2）Connection
To vibration door（IC1）Input, oscillation resistance（R3）Crus secunda pass through the second vibration end（3）It is connected to vibration door（IC1）
Output end, preceding half cycle signal output part（5）It is connected to the first out gate（IC4）Output end, second half signal output part（6）
It is connected to the second out gate（IC5）Output end, potentiometer（RP）Left end pass through the first adjustable side（9）It is connected to interval door
（IC6）Input, potentiometer（RP）Right-hand member pass through the second adjustable side（8）It is connected to interval door（IC6）Output end, excessively stream
Signal input part（10）It is connected to feedback diode（VD9）Negative electrode, oscillating capacitor（C5）Crus secunda and interface of the ground wire（7）
It is connected on the peripheral ground wire of control module.
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