CN201171021Y - Exterior-adjustable type permanent magnet type AC contactor capable of current failure delaying or instantaneous releasing - Google Patents
Exterior-adjustable type permanent magnet type AC contactor capable of current failure delaying or instantaneous releasing Download PDFInfo
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- CN201171021Y CN201171021Y CNU2008200311443U CN200820031144U CN201171021Y CN 201171021 Y CN201171021 Y CN 201171021Y CN U2008200311443 U CNU2008200311443 U CN U2008200311443U CN 200820031144 U CN200820031144 U CN 200820031144U CN 201171021 Y CN201171021 Y CN 201171021Y
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- controllable silicon
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Abstract
The utility model relates to an outside adjustable outage delayed or instant release permanent magnet alternating current contactor which comprises a permanent magnet, a magnetic yoke, a coil, an armature and a pulse excitation circuit. The pulse excitation circuit comprises a rectification circuit, a first voltage dependent resistor trigger circuit, a second voltage dependent resistor sample circuit, an audion amplifying circuit and a charge and discharge circuit which is formed by coil capacitors in series, etc. Two ends of a resistor of the sample circuit are in parallel connection with a circuit which is formed by an adjustable resistor and the resistor in series. The adjustable resistor is equipped with a regulating handle, the tail end of which is extended outside the contactor. Two capacitors with large volume are in parallel connection at the side of the capacitor of the sample circuit. The contactor is characterized in that a switch button is added at input ends of two capacitors with large volume. The contactor is provided with switches at the input ends of two capacitors with large volume in the sample circuit, so the delayed release and the instant release functions of the contactor can be selected freely, and the contactor has wide application range.
Description
Technical field
The utility model relates to a kind of A.C. contactor, especially relate to a kind of permanent-magnetic AC contact, belong to AC/DC contactor, relay, high-low pressure circuit breaker class contactor control device technical field with the time-delay of outside adjustable anti-rolling electricity or instantaneous relase function.
Background technology
Permanent-magnetic AC contact is subjected to common concern in recent years owing to have remarkable advantages such as the source of trouble is few, noise is little, operation energy consumption is low.Its typical structure is: permanent magnet and solenoid are installed in the shell frame that yoke constitutes, settle the armature that can between two settling positions, move in the coil, by pulse excitation circuit discharging and recharging to SCR control electric capacity, make and on solenoid, produce positive and negative electric pulse, and then produce respectively and permanent magnet in the same way or during reverse magnetic field, armature will move to two settling positions respectively, realizes required circuit branch, closes control thereby drive the execution member.
Fig. 1 is the permanent-magnetic AC contact pulse excitation circuit schematic diagram of prior art, as shown in Figure 1, the pulse excitation circuit of existing permanent-magnetic AC contact mainly comprises charge-discharge circuit and controllable silicon positive and negative pulse energized circuit that rectification circuit, the first piezo-resistance circuits for triggering, the second piezo-resistance sample circuit, transistor amplifier, coil capacity are connected into; The output connecting triggering circuit of rectification circuit, circuits for triggering are connected across between the positive pole and trigger electrode of forward exciting controllable silicon DG1; The output of forward exciting controllable silicon DG1 constitutes the forward energized circuit by coil L and capacitor C 4, the C5 of charge-discharge circuit; The nominal voltage of the second piezo-resistance YR2 is less than the first piezo-resistance YR1, the output of rectification circuit accesses the sample circuit, the output of sample circuit connects the base stage of amplifying circuit triode Q1, amplifying circuit is connected across between the negative pole and trigger electrode of reverse exciting controllable silicon DG2, and oppositely the output of exciting controllable silicon DG2 constitutes reverse energized circuit by capacitor C 4, C5 and the coil L of charge-discharge circuit.
Above-mentioned pulse excitation circuit is by the reverse exciting controllable silicon DG2 of triode Q1 clamper of sample circuit control, and utilize the difference of the first piezo-resistance YR1 and the second piezo-resistance YR2, guarantee the not conducting simultaneously of controllable silicon of positive and negative electric pulse in carrying out member branch, closing operation, guaranteed the reliability and the antijamming capability of pulse excitation circuit; Secondly, the change by armature, magnetic yoke structure and movement position relation simplifies the structure, and has guaranteed the reliable and stable of operating mechanism combined floodgate control position state.Capacitor C 3 capacity are less in the circuit, can only play filter action, after in parallel with capacitor C 31, C32, under the situation of the unexpected instant cut-off of circuit, the electric weight that it outwards discharges, keep the voltage of triode Q1 ground level, make the contactor time-delay discharge, have certain anti-rolling electricity (circuit momentary power failure) function.In sample circuit, be provided with adjustable resistance RP and resistance R 014, adjustable resistance RP is provided with the regulating handle that tail end reaches the contactor outside, make that the resistance value of sample circuit is adjustable, thereby can regulate the voltage of triode Q1 ground level, the discharge time of control capacitance C31, C32, realize that the outside adjustable delay of contactor discharges.
Though above-mentioned permanent-magnetic AC contact pulse excitation circuit has plurality of advantages, but when under contactor is not needing to delay time the environment that discharges, working (environment that needs instantaneous relase), capacitor C 31, C32 can not excise, and can't realize instantaneous relase, and flexibility is not enough.
The utility model content
For solving above-mentioned the deficiencies in the prior art, the purpose of this utility model is to provide a kind of permanent-magnetic AC contact with outside adjustable outage time-delay or instantaneous relase function, can select the control contactor time-delay to discharge or instantaneous relase.
For achieving the above object, the utility model is to realize by following technical scheme:
A kind of outside adjustable type outage time-delay or instantaneous relase permanent-magnetic AC contact, comprise permanent magnet, yoke, coil, armature and pulse excitation circuit, described pulse excitation circuit comprises charge-discharge circuit and the controllable silicon positive and negative pulse energized circuit that rectification circuit, the first piezo-resistance circuits for triggering, the second piezo-resistance sample circuit, transistor amplifier, coil capacity are connected into; The output connecting triggering circuit of rectification circuit, circuits for triggering are connected across between the positive pole and trigger electrode of forward exciting controllable silicon; The output of forward exciting controllable silicon constitutes the forward energized circuit by the coil and the electric capacity of charge-discharge circuit; The nominal voltage of second piezo-resistance is less than first piezo-resistance, the output of rectification circuit accesses the sample circuit, the output of sample circuit connects the base stage of amplifying circuit triode, amplifying circuit is connected across between the negative pole and trigger electrode of reverse exciting controllable silicon, and oppositely the output of exciting controllable silicon constitutes reverse energized circuit by the electric capacity and the coil of charge-discharge circuit; The resistance two ends of described sample circuit circuit that is unified into by adjustable resistance and resistance string in parallel is equipped with regulating handle on the described adjustable resistance, and the tail end of described regulating handle reaches the outside of contactor; Other two electric capacity that capacity is bigger in parallel of the electric capacity of sample circuit; It is characterized in that setting up a shift knob at the input of the bigger electric capacity of described two capacity.
Aforesaid outside adjustable type outage time-delay or instantaneous relase permanent-magnetic AC contact is characterized in that the absorption Disturbance in Power Net clutter circuit that connecting resistance constitutes between described sample circuit input and the ground.
Aforesaid outside adjustable type outage time-delay or instantaneous relase permanent-magnetic AC contact is characterized in that connecing reverse-biased diode between the negative pole of described forward exciting controllable silicon and the trigger electrode.
Aforesaid outside adjustable type outage time-delay or instantaneous relase permanent-magnetic AC contact is characterized in that described forward exciting controllable silicon and coil are other in parallel in order to keep the resistance of discharge voltage.
Aforesaid outside adjustable type outage time-delay or instantaneous relase permanent-magnetic AC contact is characterized in that described coil two ends the 3rd piezo-resistance in parallel.
Aforesaid outside adjustable type outage is delayed time or the instantaneous relase permanent-magnetic AC contact, it is characterized in that other resistance respectively in parallel of electric capacity of described charge-discharge circuit.
In the work, when supply voltage surpasses the nominal voltage of circuits for triggering first piezo-resistance, the conducting of forward exciting controllable silicon, the coil charges excitation, the armature work of contactor is to the attracted position, realize required circuit combined floodgate control, after electric capacity is full of, the circuits for triggering decompression, the forward exciting controllable silicon ends, and stops the excitation of charging, this moment, sample circuit must make the amplifying circuit conducting, thereby guarantee that reverse exciting controllable silicon ends, even after this supply voltage fluctuates in certain limit, the stable state that closed magnet circuit also can holding armature is closed a floodgate; When supply voltage was lower than predetermined value or outage, sample circuit can make amplifying circuit end, thereby makes reverse exciting controllable silicon conducting, capacitor discharge makes the reverse excitation of coil, and armature motion is to another stable position, realize required circuit separating brake control, this moment, the forward exciting controllable silicon must end.When the circuit sudden power, the shift knob TA that sets up can control and select contactor is that time-delay discharges or instantaneous relase.During outage, when shift knob TA was closed, the ground level voltage of triode Q1 was kept in outwards discharge of capacitor C 31, C32 (capacity is bigger), and oppositely exciting controllable silicon DG2 can not conducting, and contactor keeps attracting state.After the electric weight of electric capacity has been put, triode Q1 ground level dead electricity, oppositely exciting controllable silicon DG2 conducting, contactor discharges.If do not have at capacitor C 31, C32 under the situation of discharge off, circuit restores electricity, because triode Q1 ground level has sampling voltage all the time, contactor is in attracting state all the time, momentary power failure (rolling) to circuit has good resistance effect, guarantees the working properly of circuit.Be connected in parallel on the two ends of resistance R 14 after adjustable resistance RP and resistance R 014 series connection, the tail end of the regulating handle on the adjustable resistance RP reaches the outside of contactor, can change the resistance value of sample circuit by the position of change regulating handle, and then make the change in voltage of the ground level of triode Q1.Triode Q1 ground level voltage is heightened, and discharge is accelerated, and delay time shortens; Triode Q1 ground level voltage is turned down, and discharge is slowed down, the delay time lengthening.Can regulate as required, convenient and practical; When shift knob TA opens owing to cut off the capacitance discharges loop, triode Q1 instantaneous by and make the contactor instantaneous relase.
The beneficial effects of the utility model are: the utility model is set up switch by the input of the bigger electric capacity of the capacity in sample circuit, can freely select the time-delay release and the instantaneous relase function of contactor, and is applied widely.
Description of drawings
Fig. 1 is the permanent-magnetic AC contact pulse excitation circuit schematic diagram of prior art;
Fig. 2 is a permanent-magnetic AC contact pulse excitation circuit schematic diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 2 is a permanent-magnetic AC contact pulse excitation circuit schematic diagram of the present utility model.As shown in Figure 2, outside adjustable type outage time-delay of the present utility model discharges contactor, comprises yoke, coil, armature and pulse excitation circuit.In the pulse excitation circuit, four diode D1-D4 form bridge rectifier, the output of rectification circuit connects the circuits for triggering that current-limiting resistance R13 connects with the first piezo-resistance YR1 and constitutes, these circuits for triggering are connected across between the positive pole and trigger electrode of forward exciting controllable silicon DG1, and the output of this forward exciting controllable silicon DG1 constitutes the forward energized circuit with the coil L that connects and charge and discharge capacitance C4, C5.In addition, the output of rectification circuit also connects the second piezo-resistance YR2, the diode D9 of series connection according to the order of sequence, the sample circuit (calibration value of YR2 is less than YR1) that resistance R 14 constitutes, the output of this sample circuit connects the base stage of amplifying circuit triode Q1, the collector and emitter of this triode QI is connected across between the trigger electrode and negative pole of reverse exciting controllable silicon DG2, and charge and discharge capacitance C4, the C5 of series connection and coil L constitute reverse energized circuit by diode D7, resistance R 4, diode D8 and resistance R 5, R6 and reverse exciting controllable silicon DG2.In sample circuit, establish two capacitor C 31, C32 that capacity is bigger, in parallel with original capacitor C 3.By the circuit that adjustable resistance RP and resistance R 014 are connected into, on adjustable resistance RP regulating handle is housed in the two ends parallel connection of the resistance R 14 of sample circuit, the tail end of regulating handle reaches the outside of contactor.In addition, shift knob TA is set, can selects the time-delay or the instantaneous relase of control contactor at the input of capacitor C 31, C32.
In the work, when control voltage is higher than predetermined value (for example being 150V), the first piezo-resistance YR1 is breakdown, trigger current is A → D5 → R13 → YR1 → DG1 trigger electrode from Fig. 2, make forward exciting controllable silicon DG1 conducting, the forward exciting current is by A point → D6 → L → C4 → C5 → B point, and pulse excitation circuit adds the forward exciting current to the coil of contactor as a result, the armature adhesive; After this forward exciting controllable silicon DG1 ends fast because of charge and discharge capacitance C4, C5 are full of electricity, thereby keeps stable attracting state.In the above process,, therefore guarantee that by triode Q1 reverse exciting controllable silicon DG2 reliably ends because the second piezo-resistance YR2 punctures earlier.
When control voltage is lower than calibration value (for example being 100V) or is zero, the second piezo-resistance YR2 does not puncture, triode Q1 enters cut-off state rapidly because of no base current, charge and discharge capacitance C4, C5 both end voltage are added on the reverse exciting controllable silicon DG2, make reverse exciting controllable silicon DG2 conducting, reverse exciting current C4 → L → D7 → D8 → R5 → R6 → DG2 → C5 → C4 from Fig. 2 adds the reverse impulse electric current to the coil of contactor, make the armature disjunction, and the stable state when keeping disjunction.In the above process, forward exciting controllable silicon DG1 remains cut-off state.
The time-delay or the instantaneous relase of shift knob TA control contactor.During the circuit sudden power, when shift knob TA opens owing to cut off the discharge loop of capacitor C 31, C32, triode Q1 instantaneous by and make the contactor instantaneous relase; When shift knob TA was closed, capacitor C 31, C32 outwards discharged, and keep the ground level voltage of triode Q1, and oppositely exciting controllable silicon DG2 can not conducting, and contactor keeps attracting state.After the electric weight of electric capacity has been put, triode Q1 ground level dead electricity, oppositely exciting controllable silicon DG2 conducting, contactor discharges.If do not have at capacitor C 31, C32 under the situation of discharge off, circuit restores electricity, because triode Q1 ground level has sampling voltage all the time, contactor is in attracting state all the time, momentary power failure (rolling) to circuit has good resistance effect, guarantees the working properly of circuit.
Can change the resistance value of sample circuit by the position of regulating the regulating handle on the adjustable resistance RP simultaneously, and then regulate the voltage of triode Q1 ground level, change the discharge time of capacitor C 31, C32, regulate the delayed release time of contactor.Triode Q1 ground level voltage is heightened, and discharge is accelerated, and delay time shortens; Triode Q1 ground level voltage is turned down, and discharge is slowed down, the delay time lengthening.
The amount of capacity of capacitor C 31, C32 can be selected according to the length needs of delayed release time, satisfies various needs, and is widely applicable.
In addition, above circuit also has following characteristics:
1, connects the absorption Disturbance in Power Net clutter circuit that series resistance R1, R2 constitute between sample circuit input and the ground, be used to absorb the Disturbance in Power Net clutter, thereby strengthen the antijamming capability of entire circuit;
2, between the negative pole of forward exciting controllable silicon DG1 and trigger electrode, meet diode D6, D7, therefore when the reverse excitation of capacitor discharge, can between forward exciting controllable silicon DG1 is because of its negative pole and trigger electrode, have a reversed bias voltage further to guarantee to end;
3, coil L two ends the 3rd piezo-resistance YR3 in parallel can prevent to damage electronic component by the overvoltage that is created in the coil two ends fast because of forward exciting controllable silicon DG1;
4, at other each resistance R 11 in parallel of charge and discharge capacitance C4, C5, R12, cause one of them overvoltage to avoid capacitor voltage equalizing not wait;
5, the bigger resistance R 3 of the other resistance in parallel of forward exciting controllable silicon DG1 and coil L can compensate for losses, keeps charge and discharge capacitance C4, C5 to have enough discharge voltages.
In addition to the implementation, the utility model can also have other execution modes.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection range of the present utility model.
Claims (6)
1, outside adjustable type outage time-delay or instantaneous relase permanent-magnetic AC contact, comprise permanent magnet, yoke, coil, armature and pulse excitation circuit, described pulse excitation circuit comprises charge-discharge circuit and the controllable silicon positive and negative pulse energized circuit that rectification circuit, the first piezo-resistance circuits for triggering, the second piezo-resistance sample circuit, transistor amplifier, coil capacity are connected into; The output connecting triggering circuit of rectification circuit, circuits for triggering are connected across between the positive pole and trigger electrode of forward exciting controllable silicon; The output of forward exciting controllable silicon constitutes the forward energized circuit by the coil and the electric capacity of charge-discharge circuit; The nominal voltage of second piezo-resistance is less than first piezo-resistance, the output of rectification circuit accesses the sample circuit, the output of sample circuit connects the base stage of amplifying circuit triode, amplifying circuit is connected across between the negative pole and trigger electrode of reverse exciting controllable silicon, and oppositely the output of exciting controllable silicon constitutes reverse energized circuit by the electric capacity and the coil of charge-discharge circuit; The resistance two ends of described sample circuit circuit that is unified into by adjustable resistance and resistance string in parallel is equipped with regulating handle on the described adjustable resistance, and the tail end of described regulating handle reaches the outside of contactor; Other two electric capacity that capacity is bigger in parallel of the electric capacity of sample circuit; It is characterized in that setting up a shift knob at the input of the bigger electric capacity of described two capacity.
2, outside adjustable type outage time-delay according to claim 1 or instantaneous relase permanent-magnetic AC contact is characterized in that the absorption Disturbance in Power Net clutter circuit that connecting resistance constitutes between described sample circuit input and the ground.
3, outside adjustable type outage time-delay according to claim 1 or instantaneous relase permanent-magnetic AC contact is characterized in that connecing reverse-biased diode between the negative pole of described forward exciting controllable silicon and the trigger electrode.
4, outside adjustable type outage time-delay according to claim 1 or instantaneous relase permanent-magnetic AC contact is characterized in that described forward exciting controllable silicon and coil are other in parallel in order to keep the resistance of discharge voltage.
5, outside adjustable type outage time-delay according to claim 1 or instantaneous relase permanent-magnetic AC contact is characterized in that described coil two ends the 3rd piezo-resistance in parallel.
6, outside adjustable type outage according to claim 1 is delayed time or the instantaneous relase permanent-magnetic AC contact, it is characterized in that other resistance respectively in parallel of electric capacity of described charge-discharge circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200311443U CN201171021Y (en) | 2008-01-29 | 2008-01-29 | Exterior-adjustable type permanent magnet type AC contactor capable of current failure delaying or instantaneous releasing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200311443U CN201171021Y (en) | 2008-01-29 | 2008-01-29 | Exterior-adjustable type permanent magnet type AC contactor capable of current failure delaying or instantaneous releasing |
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| Publication Number | Publication Date |
|---|---|
| CN201171021Y true CN201171021Y (en) | 2008-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200311443U Expired - Fee Related CN201171021Y (en) | 2008-01-29 | 2008-01-29 | Exterior-adjustable type permanent magnet type AC contactor capable of current failure delaying or instantaneous releasing |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102280309A (en) * | 2011-06-03 | 2011-12-14 | 江苏中金电器设备有限公司 | Outage caging type permanent magnet contactor |
| CN106783399A (en) * | 2017-03-01 | 2017-05-31 | 上海电机学院 | A kind of intelligent type permanent magnet contactor |
-
2008
- 2008-01-29 CN CNU2008200311443U patent/CN201171021Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102280309A (en) * | 2011-06-03 | 2011-12-14 | 江苏中金电器设备有限公司 | Outage caging type permanent magnet contactor |
| CN106783399A (en) * | 2017-03-01 | 2017-05-31 | 上海电机学院 | A kind of intelligent type permanent magnet contactor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081224 Termination date: 20140129 |