CN102280309A - Outage caging type permanent magnet contactor - Google Patents
Outage caging type permanent magnet contactor Download PDFInfo
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- CN102280309A CN102280309A CN2011101488574A CN201110148857A CN102280309A CN 102280309 A CN102280309 A CN 102280309A CN 2011101488574 A CN2011101488574 A CN 2011101488574A CN 201110148857 A CN201110148857 A CN 201110148857A CN 102280309 A CN102280309 A CN 102280309A
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Abstract
The invention discloses an outage caging type permanent magnet contactor, comprising a magnet yoke shell, a solenoid, an armature, a permanent magnet and a pulse excitation circuit, wherein the solenoid, is installed in the magnet yoke shell; the armature is movably plugged and sheathed in the solenoid; the permanent magnet and the pulse excitation circuit are fixed in the magnet yoke shell; the pulse excitation circuit comprises a forward excitation circuit, a charging and discharging circuit and a reverse excitation circuit, wherein the forward excitation circuit, is a passage during energization; the reverse excitation circuit is a passage during outage; and a magnetic field which is generated by the excitation on the solenoid by the reverse excitation circuit can cause the armature and the permanent magnet to mutually attract. The permanent magnet contactor with the structure ensures that the reverse excitation circuit can carry out reverse excitation to the solenoid during outage, so that the armature can mutually attract with the permanent magnet to realize outage caging, the reliability and the stability of the permanent magnet contactor are improved, and the outage caging type permanent magnet contactor is suitable for workplaces in which the contractors need to be attracted for a long period.
Description
Technical field
The present invention relates to a kind of contactor controller, particularly a kind of permanent magnetism type contactor.
Background technology
Permanent magnetism type contactor is a kind of contactor control device, permanent magnet and solenoid are installed in the shell frame that yoke constitutes, settled the armature that can between two settling positions, move in the coil, on solenoid, produce positive and negative electric pulse by pulse excitation circuit, and then produce respectively with permanent magnet in the same way or reverse magnetic field, armature is moved between two settling positions, realize required circuit branch, close control thereby drive the execution member.Yet the function that existing permanent magnetism type contactor reaches only is: holding armature under the situation of energising, thereby the combined floodgate of realization place circuit; Under the situation of outage, push armature open, thereby realize the separating brake of place circuit.When equipment needs long-term the combined floodgate, as the electric shocked guard corollary system, if emergency situations such as appearance power failures, equipment will lose safe effect originally; And make equipment remain on the state of energising always, and wasting energy, cost increases.
Summary of the invention
The technical problem to be solved in the present invention is that the permanent magnetism type contactor that overcomes prior art can't be tackled the defective of emergency situations, provide a kind of can be under the situation of outage fully holding armature reliably, realize the permanent magnetism type contactor that the place circuit closes a floodgate.
In order to achieve the above object, the technical solution used in the present invention is:
Outage sticking type permanent magnetism type contactor comprises the yoke shell, is installed in armature in solenoid of the solenoid in the yoke shell, movable sleeve, is fixed on permanent magnet and pulse excitation circuit in the yoke shell; Wherein pulse excitation circuit comprises: rectification circuit, the first piezo-resistance circuits for triggering, the second piezo-resistance sample circuit, transistor amplifier, the forward and reverse energized circuit of controllable silicon and coil capacity series-connection charge-discharge circuit, and wherein the nominal voltage of second piezo-resistance is less than first piezo-resistance; 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, and the output of described forward exciting controllable silicon connects the solenoid of charge-discharge circuit and electric capacity to constitute the forward energized circuit; The output of rectification circuit also accesses the sample circuit, the output of sample circuit connects the base stage of transistor amplifier, transistor amplifier is connected across between the negative pole and trigger electrode of reverse exciting controllable silicon, and the output of described reverse exciting controllable silicon connects the electric capacity of charge-discharge circuit and solenoid to constitute reverse energized circuit; It is characterized in that: oppositely energized circuit attracts each other armature and permanent magnet to the magnetic field that magnetic excitation coil produces.
As a kind of optimal way, described coil capacity series-connection charge-discharge circuit comprises coil and the shunt capacitance that is cascaded with coil.
As to above-mentioned preferred improvement, between the negative pole of reverse exciting controllable silicon and trigger electrode, be connected to reverse-biased diode.
As another kind of optimal way, between the positive pole of reverse exciting controllable silicon and coil, be connected to switch.
Adopt technique scheme, the present invention has reached following beneficial effect with respect to prior art:
By the control of sample circuit and transistor amplifier, make forward energized circuit and oppositely not conducting simultaneously of energized circuit, be stable forward excitation effect when having guaranteed energising, during outage stable reverse excitation effect; The FR of magnetic field that reverse energized circuit is produced magnetic excitation coil and permanent magnet is so that armature and permanent magnet are attracted each other the sticking effect in the time of can realizing cutting off the power supply simultaneously; Electric capacity in the coil capacity series-connection charge-discharge circuit is set to shunt capacitance, the capacitance in the time of can increasing discharge, and the reverse excitation effect when allowing outage is better stable; Between the negative pole of reverse exciting controllable silicon and trigger electrode, be connected to reverse-biased diode, the Kickback voltage that can absorb branch, produces when closing a floodgate; Between the positive pole of reverse exciting controllable silicon and coil, be connected to switch, when normal use contactor, can Closing Switch, to realize a complete path, when needs overhaul equipment, can the folding switch, contactor is the state of opening a sluice gate when guaranteeing to overhaul, and guarantees fail safe.
Description of drawings
Fig. 1 is the pulse excitation circuit schematic diagram of the preferred implementation of permanent magnetism type contactor of the present invention.
Embodiment
The present invention is described further below in conjunction with accompanying drawing and execution mode.
What Fig. 1 showed is the pulse excitation circuit schematic diagram of the preferred implementation of permanent magnetism type contactor of the present invention.As shown in the figure, pulse excitation circuit comprises the rectification circuit of being made up of 4 diode D1-D4, sample circuit and forward exciting controllable silicon DG1 that the circuits for triggering, the second piezo-resistance YR2, diode D9 and the current-limiting resistance R14 that have the first piezo-resistance YR1 and current-limiting resistance R13 series connection to constitute that links to each other with the output of rectification circuit constitutes, wherein the nominal voltage of the second piezo-resistance YR2 is less than the first piezo-resistance YR1; The output of rectification circuit connects the negative pole of forward exciting controllable silicon DG1, and circuits for triggering are connected across between the positive pole and trigger electrode of forward exciting controllable silicon DG1; The shunt capacitance that the output of described forward exciting controllable silicon DG1 meets solenoid L and connects with solenoid L, thus constitute the forward energized circuit; The output of sample circuit connects the base stage of transistor amplifier Q1, transistor amplifier 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 connects shunt capacitance C4, C5 and solenoid to constitute reverse energized circuit.
The no any magnetic of armature itself, idle the time, no current in the pulse excitation circuit, thereby armature can be by permanent magnet sticking or repulsion; During work, pulse excitation circuit applies exciting current to solenoid L, thereby has magnetic field in the armature of movable sleeve in solenoid L, thereby can produce magnetic pole on the armature, and the permanent magnet that faces with the armature magnetic pole just can sticking or repelled armature.
Set the magnetic pole of the N utmost point of permanent magnet in advance over against armature.The energising of paired pulses field circuit, when control voltage is higher than the reservation value, YR1 is breakdown, the flow through trigger electrode of A point → diode D5 → current-limiting resistance R13 → piezo-resistance YR1 → forward exciting controllable silicon DG1 of trigger current, make forward exciting controllable silicon DG1 conducting, with the output → coil L → capacitor C 4 of after-current from forward exciting controllable silicon DG1, the positive pole of C5, when having electric current to pass through among the coil L, electric current is to coil L excitation.In advance arranging of the coil L that sets makes the N utmost point of armature over against the N utmost point of permanent magnet, thereby armature and permanent magnet repel mutually, makes contactor be in gate-dividing state.After this controllable silicon DG1 ends fast because of capacitor C 4, C5 are full of electricity.Simultaneously since the nominal voltage of piezo-resistance YR2 less than piezo-resistance YR1, thereby YR2 is breakdown equally, electric current is by triode Q1, thereby guarantees that reverse exciting controllable silicon DG2 also ends.Thereby under the situation of holding circuit power supply, contactor is in gate-dividing state all the time.
When control voltage when outage, triode Q1 ends, and is stored in electrical energy flows among capacitor C 4, the C5 through resistance R 9, R10, flows to the trigger electrode of reverse exciting controllable silicon DG2, makes controllable silicon DG2 conducting; Thereby electric current is by positive pole → coil L → diode D7 → diode D8 → K switch → reverse exciting controllable silicon DG2 → capacitor C 4 of capacitor C 4, C5, the negative pole of C5, the reverse energized circuit of Xing Chenging has changed the sense of current among the coil L thus, make the S utmost point of armature over against the N utmost point of permanent magnet, thereby armature and permanent magnet attract each other, and makes contactor be in the state of combined floodgate.Thereby under the situation of outage, it is path that reverse energized circuit is only arranged in the pulse excitation circuit, under the effect of charge and discharge capacitance, can guarantee to have in the reverse energized circuit enough electric currents so that solenoid is carried out excitation, thereby make armature and permanent magnet remain on the state of sticking, contactor also remains on the state of combined floodgate.
Can between the negative pole of reverse exciting controllable silicon and trigger electrode, be connected to reverse-biased diode D10, be used for the Kickback voltage that absorbs branch, produce in the pulse excitation circuit when closing a floodgate.
Can between the negative pole of forward exciting controllable silicon DG1 and trigger electrode, meet diode D6, D7, therefore when reverse excitation, can further guarantee ending of forward exciting controllable silicon DG1.
Can between the output of rectification circuit and the first piezo-resistance circuits for triggering, connect diode, when reverse excitation, guarantee that electric current all flows through reverse exciting controllable silicon DG2 to reduce energy consumption, guarantee the stability of reverse excitation.
When needs overhaul equipment, for the purpose of safety, need make contactor be in the state of separating brake.Between the positive pole of reverse exciting controllable silicon DG2 and coil L switch is set, during Closing Switch K, oppositely energized circuit is a complete path, can normally use contactor; When needs overhaul equipment, can the folding K switch, be the state of opening a sluice gate to guarantee contactor, the safety in the time of just can ensureing maintenance.
The permanent magnetism type contactor of present embodiment, when giving coil electricity, contactor can separate; When under the situation of outage fully, contactor reliably sticking together, this moment, the power consumption of coil was zero, reliability height, good stability.
With embodiment the present invention has been done detailed explanation in conjunction with the accompanying drawings above, but the present invention is not limited to this, any those skilled in the art under the prerequisite of aim of the present invention, can make various changes and modifications in the ken that is possessed.
Claims (5)
1. outage sticking type permanent magnetism type contactor comprises the yoke shell, is installed in armature in solenoid of the solenoid in the yoke shell, movable sleeve, is fixed on permanent magnet and pulse excitation circuit in the yoke shell; Wherein pulse excitation circuit comprises: rectification circuit, the first piezo-resistance circuits for triggering, the second piezo-resistance sample circuit, transistor amplifier, the forward and reverse energized circuit of controllable silicon and coil capacity series-connection charge-discharge circuit, and wherein the nominal voltage of second piezo-resistance is less than first piezo-resistance; 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, and the output of described forward exciting controllable silicon connects the solenoid of charge-discharge circuit and electric capacity to constitute the forward energized circuit; The output of rectification circuit also accesses the sample circuit, the output of sample circuit connects the base stage of transistor amplifier, transistor amplifier is connected across between the negative pole and trigger electrode of reverse exciting controllable silicon, and the output of described reverse exciting controllable silicon connects the electric capacity of charge-discharge circuit and solenoid to constitute reverse energized circuit; It is characterized in that: oppositely energized circuit attracts each other armature and permanent magnet to the magnetic field that magnetic excitation coil produces.
2. outage sticking type permanent magnetism type contactor according to claim 1 is characterized in that: described coil capacity series-connection charge-discharge circuit comprises coil and the shunt capacitance that is cascaded with coil.
3. outage sticking type permanent magnetism type contactor according to claim 2 is characterized in that: be connected to reverse-biased diode between the negative pole of reverse exciting controllable silicon and trigger electrode.
4. outage sticking type permanent magnetism type contactor according to claim 1 is characterized in that: be connected to diode between the output of rectification circuit and the first piezo-resistance circuits for triggering.
5. according to each described outage sticking type permanent magnetism type contactor of claim 1-4, it is characterized in that: between the positive pole of reverse exciting controllable silicon and coil, be connected to switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101488574A CN102280309A (en) | 2011-06-03 | 2011-06-03 | Outage caging type permanent magnet contactor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101488574A CN102280309A (en) | 2011-06-03 | 2011-06-03 | Outage caging type permanent magnet contactor |
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| CN102280309A true CN102280309A (en) | 2011-12-14 |
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| CN2011101488574A Pending CN102280309A (en) | 2011-06-03 | 2011-06-03 | Outage caging type permanent magnet contactor |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1564290A (en) * | 2004-03-30 | 2005-01-12 | 扬中市中金电器设备有限公司 | Permanent-magnet double steady-state contactor |
| CN201171021Y (en) * | 2008-01-29 | 2008-12-24 | 江苏中金电器设备有限公司 | Exterior-adjustable type permanent magnet type AC contactor capable of current failure delaying or instantaneous releasing |
| US7638966B1 (en) * | 2008-09-03 | 2009-12-29 | Alexander Pummer | Voltage control and power factor correction in AC induction motors |
| US20100033275A1 (en) * | 2008-08-11 | 2010-02-11 | International Business Machines Corporation | Worldwide adaptive multi-coil automatic transfer switch |
| CN202067728U (en) * | 2011-06-03 | 2011-12-07 | 江苏中金电器设备有限公司 | Permanent magnetic contactor capable of magnetic holding in power interruption |
-
2011
- 2011-06-03 CN CN2011101488574A patent/CN102280309A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1564290A (en) * | 2004-03-30 | 2005-01-12 | 扬中市中金电器设备有限公司 | Permanent-magnet double steady-state contactor |
| CN201171021Y (en) * | 2008-01-29 | 2008-12-24 | 江苏中金电器设备有限公司 | Exterior-adjustable type permanent magnet type AC contactor capable of current failure delaying or instantaneous releasing |
| US20100033275A1 (en) * | 2008-08-11 | 2010-02-11 | International Business Machines Corporation | Worldwide adaptive multi-coil automatic transfer switch |
| US7638966B1 (en) * | 2008-09-03 | 2009-12-29 | Alexander Pummer | Voltage control and power factor correction in AC induction motors |
| CN202067728U (en) * | 2011-06-03 | 2011-12-07 | 江苏中金电器设备有限公司 | Permanent magnetic contactor capable of magnetic holding in power interruption |
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Application publication date: 20111214 |