CN202454372U - Magnetizing and demagnetizing circuit and magnetizing and demagnetizing machine - Google Patents
Magnetizing and demagnetizing circuit and magnetizing and demagnetizing machine Download PDFInfo
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- CN202454372U CN202454372U CN2012200066448U CN201220006644U CN202454372U CN 202454372 U CN202454372 U CN 202454372U CN 2012200066448 U CN2012200066448 U CN 2012200066448U CN 201220006644 U CN201220006644 U CN 201220006644U CN 202454372 U CN202454372 U CN 202454372U
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Abstract
The utility model discloses a magnetizing and demagnetizing circuit and a magnetizing and demagnetizing machine. The magnetizing and demagnetizing circuit comprises a power input circuit, a charging control circuit, a boosting and rectifying circuit, an energy storage circuit and a high-voltage output circuit, and further comprises a feedback circuit for sampling a voltage signal of the energy storage circuit and a master control circuit for achieving PWM (Pulse-Width Modulation) control of the charging control circuit according to the input of the feedback circuit, wherein the feedback circuit comprises a sampling circuit and a high-voltage isolator; the output terminal of the sampling circuit is connected with the input terminal of the high-voltage isolator; and the output terminal of the high-voltage isolator is connected with the master control circuit. The magnetizing and demagnetizing circuit and the magnetizing and demagnetizing machine have the benefits of high reliability, good safety performance and long service life.
Description
Technical field
The utility model relate to a kind of to permanent magnetic material magnetize or demagnetize fill demagnetization circuit and adopt this to fill the Magnetizing and demagnetizing machine of demagnetization circuit.
Background technology
The existing voltage that magnetizes that magnetizes power supply output generally can be very not high, and between 300V-2000V, and efficient is low, power consumption big, performance is more unstable, and failure rate is high.Its main cause is that high pressure (forceful electric power) is not isolated with low pressure (light current), and inverse peak voltage and other interference signals of the peak value that produces on the coil that magnetizes during work are easy to scurry into low-voltage control circuit, causes unstable easy damage of control circuit.
Summary of the invention
The utility model technical problem to be solved is, provides a kind of and fills demagnetization circuit and adopt this Magnetizing and demagnetizing machine that fills demagnetization circuit, with the raising voltage that magnetizes.
The technical problem of the utility model solves through following technological means:
A kind of demagnetization circuit that fills comprises the power supply input circuit, charging control circuit, boost rectifying circuit, accumulator and the high-voltage output circuit that connect successively; The feedback circuit and the governor circuit that according to the input of feedback circuit said charging control circuit is carried out PWM control that also comprise the voltage signal of the accumulator of sampling; Wherein, Said feedback circuit comprises sample circuit and high-voltage isolator; The output of said sample circuit is connected with the input of said high-voltage isolator, and the output of said high-voltage isolator is connected with said governor circuit.
Preferably:
Said power supply input circuit comprises high voltage source input circuit that is connected with the 380V AC power and the low-tension supply input circuit that is connected with the 220V AC power; The output of said high voltage source input circuit is connected with the input of said charging control circuit, and the output of said low-tension supply input circuit is connected with said governor circuit.
Said high voltage source input circuit and low-tension supply input circuit include fuse, are connected the circuit breaker between input and the said fuse and are connected fuse and the A.C. contactor of output.
Also comprise the auxiliary circuit that power input is connected with said low-tension supply input circuit, this auxiliary circuit comprises radiator fan and working station indicator.
Said working station indicator comprises standby indicating lamp (DS1), charging indicator light (DS2) and discharge indicator light (DS3).
Said first controllable silicon (SCR1) and second controllable silicon (SCR2) that comprises that parallel connected in reverse phase connects; The anode of the negative electrode of first controllable silicon (SCR1) and second controllable silicon (SCR2) is connected the back and is connected with the output of said high voltage source input circuit, and the negative electrode of the anode of first controllable silicon (SCR1) and second controllable silicon (SCR2) is connected the back and is connected with the input of said boost rectifying circuit; The control utmost point of first controllable silicon (SCR1) and second controllable silicon (SCR2) also is connected with said governor circuit with negative electrode.
A kind of Magnetizing and demagnetizing machine comprises the aforesaid demagnetization circuit that fills arbitrarily.
Compared with prior art; The utility model adopts high-voltage isolator to solve the isolating problem of high pressure (forceful electric power) with low pressure (light current); Adopt boost rectifying circuit to substitute high-power step-up transformer simultaneously; Reliability, security performance and useful life to filling demagnetization circuit all increase significantly, and realize that cost is lower.
Description of drawings
Fig. 1 is the circuit block diagram of the utility model specific embodiment;
Fig. 2 is the circuit topology figure of the utility model specific embodiment.
Embodiment
Contrast accompanying drawing and combination preferred embodiment are described further the utility model below.
Like Fig. 1; The demagnetization circuit that fills of present embodiment comprises: the power supply input circuit, charging control circuit, boost rectifying circuit, accumulator and the high-voltage output circuit that connect successively; Also comprise the feedback circuit of auxiliary circuit, sampling accumulator voltage signal and said charging control circuit is carried out the governor circuit that PWM controls according to the input of feedback circuit; Wherein feedback circuit comprises sample circuit and high-voltage isolator; The output of said sample circuit is connected with the input of said high-voltage isolator, and the output of said high-voltage isolator is connected with said governor circuit.
Following map 2 also combines more concrete embodiment that the utility model is further explained:
Power supply input circuit mainly by circuit breaker S1, first fuse F 1, second fuse F 2, the 3rd fuse F 3, comprise that A.C. contactor K1, power transformer T1, start button S2 and the shutdown button S3 of three groups of main contacts K1-1, K1-2, K1-3 form.Wherein, the A through circuit breaker S1 and the external high pressure alternating current of 380V mutually respectively, B is connected, second end connects to form the high voltage source input circuit with two main contacts K1-1 of A.C. contactor K1, first end of K1-2 respectively for first end of first fuse F 1, second fuse F 2; The logical circuit breaker S1 of first end of the 3rd fuse F 3 is connected with the outer low pressure alternating current of 220V, second end is connected with first end of main contacts K1-3, second end of main contacts K1-3 is connected with the former limit of transformer T1 winding, and circuit breaker S1, the 3rd fuse F 3, main contacts K1-3 and transformer T1 form the low-tension supply input circuit jointly.High voltage source (330V) is supplied power to charging control circuit through the high voltage source input circuit, and low-tension supply (220V) is supplied power to governor circuit power supply and auxiliary circuit through the low-tension supply input circuit.The power supply input circuit of present embodiment comprises that also start button S2, shutdown button S3 are used to the contact K1-4 that controls the break-make of A.C. contactor K1 and be used for self-locking, and this contact K1-4 is the contact of A.C. contactor K1.
Charging control circuit comprises first controllable silicon SCR 1 and second controllable silicon SCR 2 that parallel connected in reverse phase connects; The anode of the negative electrode of first controllable silicon SCR 1 and second controllable silicon SCR 2 is connected the back and connects with the output (A of AC380V alternating current source mutually) of said high voltage source input circuit; The negative electrode of the anode of first controllable silicon SCR 1 and second controllable silicon SCR 2 is connected the back and is connected with an input of boost rectifying circuit, and another input of boost rectifying circuit connects the B phase of AC380V alternating current source; The control utmost point of first controllable silicon SCR 1 and second controllable silicon SCR 2 also is connected with said governor circuit with negative electrode, receives the pwm control signal of governor circuit, and adjusts the size of the angle of flow according to this pwm control signal, thereby reaches the purpose of electrodeless regulation voltage.In the present embodiment, first controllable silicon SCR 1 is in the negative half period conducting, and second controllable silicon SCR 2 is in positive half cycle conducting, and A.C. voltmeter ACV is connected between two power supplys of AB.
Boost rectifying circuit is connected between charging control circuit and the accumulator; Be used for controlled AC380V alternating current source through behind the boost capacitor, rectifier diode voltage multiplying rectifier; Become controllable direct voltage (0-3000V); Give capacitor C1, C2, the C3 charging of accumulator again through current-limiting resistance R1, the two ends that D.C. voltmeter DCV is connected to energy storage capacitor are used for indicating the voltage that magnetizes.
Accumulator: mainly by energy storage capacitor C1, C2, C3 and be connected copper bar, cable constitutes.The energy storage capacitor of present embodiment adopts the nonpolarity noinductive capacitor of high voltage oil immersion formula; Perhaps be together in series C1, C2, C3 parallel connection through copper bar; Can make capacitor volume and withstand voltage increase (depending on the design and the requirement of the power supply that magnetizes), be used for storing the high voltage electric energy that boost rectifying circuit produces; Capacitor anode is connected with the 3rd controllable silicon SCR 3 through cable, and negative pole also directly is connected with the coil L (tool) that magnetizes through cable.
High-voltage output circuit: after the voltage on the energy storage capacitor reaches set point; Charging control circuit just stops charging; Have governor circuit (PCB) to send triggering signal then and make 3 conductings of the 3rd controllable silicon SCR, energy storage capacitor is just through stube cable line, the 3rd controllable silicon SCR 3, the coil L (tool) that magnetizes discharge; In the extremely short time, produce the pulse high current of a peak value, thereby at an inner peak value, the high-intensity pulsed magnetic field of producing of the coil L that magnetizes, this peak value, high-intensity pulsed magnetic field just are used for magnetic material is magnetized.Be connected between controllable silicon SCR 2 anodes and the negative electrode after protecting capacitor C 4 and protective resistance R2 connecting; Sustained diode 1 is parallelly connected with the coil L that magnetizes through cable, is used to improve discharge current waveform.
Feedback circuit: the voltage signal of the accumulator that is used to sample produces a sampled voltage and offers governor circuit; It comprises sample circuit and high-voltage isolator; The output of sample circuit is connected with the input of high-voltage isolator, and the output of high-voltage isolator is connected with governor circuit.The voltage signal of energy storage capacitor gets into high-voltage isolator through sample circuit sampling back; High-voltage isolator inside has a Hall element can detect the size of sampled voltage; Then through inserting governor circuit after the processing and amplifying, the working power of high-voltage isolator is provided by the power supply of ± 15V.Because the effect of high-voltage isolator, during work, anti-cutting edge of a knife or a sword voltage and other interference signals of the peak value that produces on the coil that magnetizes can not scurried like the low voltage control district.
Governor circuit (PCB circuit): power supply is provided for governor circuit (PCB) after the AC220V power supply process power transformer T1 step-down; It provides a reference voltage through sampled voltage that feedback circuit is provided and the relatively back of presetting reference voltage to the pulse-width modulation PWM circuit; Be used to control the angle of flow of two controllable silicon SCR 1, SCR2; If sampled voltage is greater than reference voltage, two silicon controlled angles of flow just diminish or turn-off so, if sampled voltage is less than reference voltage; Two silicon controlled angles of flow just become big so; Regulate the purpose that the bulk potential device can change the size of reference voltage and then reach regulation voltage, entire circuit forms the control system of a closed loop, makes voltage keep stable; Governor circuit can also comprise over-voltage over-current protection circuit, logic control circuit, signal input and output circuit, controllable silicon pulsed triggering circuit etc.
The demagnetization circuit that fills of present embodiment also comprises auxiliary circuit, mainly is made up of foot switch S4, standby indicating lamp DS1, charging indicator light DS2, discharge indicator light DS3, fan FAN1, FAN2, FAN3, FAN4.Foot switch S4 is connected with governor circuit (PCB); Be used to send enabling signal; Standby indicating lamp DS1, charging indicator light DS2, discharge indicator light DS3, be respectively applied for the magnetize operating state of power supply of indication, fan FAN1, FAN2, FAN3, FAN4 give the power supply heat sinking that magnetizes.
Above content is the further explain that combines concrete preferred implementation that the utility model is done, and can not assert that the practical implementation of the utility model is confined to these explanations.For the utility model person of ordinary skill in the field; Under the prerequisite that does not break away from the utility model design; Can also make some being equal to substitutes or obvious modification, and performance or purposes are identical, all should be regarded as belonging to the protection range of the utility model.
Claims (7)
1. one kind is filled demagnetization circuit, comprises the power supply input circuit, charging control circuit, boost rectifying circuit, accumulator and the high-voltage output circuit that connect successively; Also comprise the feedback circuit of sampling accumulator voltage signal and said charging control circuit carried out the governor circuit that PWM controls, it is characterized in that according to the input of feedback circuit:
Said feedback circuit comprises sample circuit and high-voltage isolator, and the output of said sample circuit is connected with the input of said high-voltage isolator, and the output of said high-voltage isolator is connected with said governor circuit.
2. the demagnetization circuit that fills according to claim 1; It is characterized in that: said power supply input circuit comprises high voltage source input circuit that is connected with the 380V AC power and the low-tension supply input circuit that is connected with the 220V AC power; The output of said high voltage source input circuit is connected with the input of said charging control circuit, and the output of said low-tension supply input circuit is connected with said governor circuit.
3. the demagnetization circuit that fills according to claim 2 is characterized in that: said high voltage source input circuit and low-tension supply input circuit include fuse, are connected the circuit breaker between input and the said fuse and are connected fuse and the A.C. contactor of output.
4. the demagnetization circuit that fills according to claim 1 is characterized in that: also comprise the auxiliary circuit that power input is connected with said low-tension supply input circuit, this auxiliary circuit comprises radiator fan and working station indicator.
5. the demagnetization circuit that fills according to claim 4 is characterized in that: said working station indicator comprises standby indicating lamp (DS1), charging indicator light (DS2) and discharge indicator light (DS3).
6. the demagnetization circuit that fills according to claim 2; It is characterized in that: said charging control circuit comprises first controllable silicon (SCR1) and second controllable silicon (SCR2) that parallel connected in reverse phase connects; The anode of the negative electrode of first controllable silicon (SCR1) and second controllable silicon (SCR2) is connected the back and is connected with the output of said high voltage source input circuit, and the negative electrode of the anode of first controllable silicon (SCR1) and second controllable silicon (SCR2) is connected the back and is connected with the input of said boost rectifying circuit; The control utmost point of first controllable silicon (SCR1) and second controllable silicon (SCR2) also is connected with said governor circuit with negative electrode.
7. a Magnetizing and demagnetizing machine is characterized in that: comprise any described demagnetization circuit that fills of claim 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200066448U CN202454372U (en) | 2012-01-09 | 2012-01-09 | Magnetizing and demagnetizing circuit and magnetizing and demagnetizing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200066448U CN202454372U (en) | 2012-01-09 | 2012-01-09 | Magnetizing and demagnetizing circuit and magnetizing and demagnetizing machine |
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|---|---|
| CN202454372U true CN202454372U (en) | 2012-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012200066448U Expired - Fee Related CN202454372U (en) | 2012-01-09 | 2012-01-09 | Magnetizing and demagnetizing circuit and magnetizing and demagnetizing machine |
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| CN (1) | CN202454372U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103489563A (en) * | 2013-09-27 | 2014-01-01 | 北京方德信安科技有限公司 | Automatic safety discharging device and safety discharging method for demagnetizing equipment |
| CN105759885A (en) * | 2016-03-03 | 2016-07-13 | 东莞市纳声电子设备科技有限公司 | Intelligent precision magnetizing machine and magnetizing method thereof |
-
2012
- 2012-01-09 CN CN2012200066448U patent/CN202454372U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103489563A (en) * | 2013-09-27 | 2014-01-01 | 北京方德信安科技有限公司 | Automatic safety discharging device and safety discharging method for demagnetizing equipment |
| CN103489563B (en) * | 2013-09-27 | 2015-12-02 | 北京方德信安科技有限公司 | A kind of Deperming Facility automatic safe electric discharge device and safe-discharge method |
| CN105759885A (en) * | 2016-03-03 | 2016-07-13 | 东莞市纳声电子设备科技有限公司 | Intelligent precision magnetizing machine and magnetizing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120926 Termination date: 20180109 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |