CN2052932U - Magnet holding traction electromagnet and controlled circuit thereof - Google Patents
Magnet holding traction electromagnet and controlled circuit thereof Download PDFInfo
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- CN2052932U CN2052932U CN 89213167 CN89213167U CN2052932U CN 2052932 U CN2052932 U CN 2052932U CN 89213167 CN89213167 CN 89213167 CN 89213167 U CN89213167 U CN 89213167U CN 2052932 U CN2052932 U CN 2052932U
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- tractive electromagnet
- holding type
- control circuit
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Abstract
The utility model discloses a magnet holding traction electromagnet and the controlled circuit thereof, belonging to the field of low voltage electrical machines. The utility model mode is an electric operating mechanism matching installed on an electrical apparatus such as an electromagnetic valve, an electromagnetic relay, a magnetic starter, a contactor and an electromagnetic brake and the control circuit for special purpose. The field coil is cut off automatically after the electric magnet attracts. The utility model has the advantages of moment energizing attracting, permanent magnetism holding self-preservation, moment energizing releasing, high efficiency, power save, ultra-high-speed action, high dependability, saving copper material, no need of silicon steel sheet, and easy producing. The optimum power save rate can reach by about 99.9%, and the utility model can be formed hundreds of improvers matching for the electrical machine above.
Description
Magnetic holding type tractive electromagnet and control circuit thereof, changing for product of a kind of efficient electricity-saving belongs to the low-voltage electrical mechanical field.Be supporting motor-operating mechanism and the dedicated control circuit that is installed in (interior) on the electromechanical devices such as electromagnetically operated valve, electromagnetic relay, magnetic starter, contactor, electromagnetic brake, its effect is that valve plug, valve rod or electromagnetic relay, magnetic starter, the moving contact rack of contactor or the band-type brake of electromagnetic brake that the control tractive electromagnet drives done relative motion, thereby reaches the purpose that opens and closes electromagnetic valve or deciliter electromagnetic relay, magnetic starter, contactor electrical contact or deciliter electromagnetic brake brake shoe.
In prior art, as Chinese patent application number: 88219029.6 " magnetic freeze mode electromagnetically operated valves " that provide and Chinese patent application number: 88218906.9 designs such as " magnetic freeze mode electromagnetic relay switch devices " that provide, though to a great extent existing various magnetic holding solenoid valves and magnetic are kept the shape of electromagnetic relay switch device tractive electromagnet, structure and combination thereof have proposed new improvement and practical technical scheme, but, find after further research, above-mentioned prior art scheme still exists the defective of two essence: first, the magnetic confining force of magnetic holding type tractive electromagnet is big not enough, the magnetic energy product of permanent magnet does not obtain sufficient development and utilization, and magnetic structure (design) is also unreasonable.The second, tractive electromagnet can't automatically return to release condition when the unexpected dead electricity of field power supply after magnetic keeps " self-locking ".Like this, the step-out of supply voltage and tractive electromagnet operating state may cause huge " self-starting " impulse current, makes device damage, and technological process destroys, even causes serious accident such as grid disconnection.
The present invention is different with above-mentioned prior art, its objective is provides a kind of new, dynamical closed work magnetic circuit, shape and relative position to some core component in the magnetic circuit are made special constraint qualification, main flux with the electromagnetism magnetic line of force and the permanent magnetic magnetic line of force in the assurance tractive electromagnet work magnetic circuit can pass the main air gap of work of magnetic circuit with the deflection (parallel each other) of the best, thereby produces a kind of Electromagnetic Control and all very high novel magnetic holding type tractive electromagnet of permanent magnetic control system (magnetic maintenance) sensitivity.
Another object of the present invention provides a kind of pulse control unit circuit of special use: only use a solenoid just can handle adhesive and release condition that magnetic keeps tractive electromagnet, and the tractive electromagnet that makes magnetic remain on attracting state when field power supply disappears automatically returns to release condition.
The 3rd purpose of the present invention provide a kind of QA, be suitable for efficient electricity-saving tractive electromagnet frequent operation, silent running, improve the functional reliability and the electric arc extinction performance of controlled device significantly.
The 4th purpose of the present invention provides a kind of new solution that designs solenoid: its electromagnetic wire sectional area is selected for use by the overcurrent operational mode without exception.For example, can go out the magnetic holding type tractive electromagnet solenoid of a reliably working by the overcurrent standard design of specified safe carrying capacity more than 20 times, thereby save a large amount of copper materials, dwindle the machine volume that magnetic keeps tractive electromagnet.
Basic structure of the present invention is the pulse control unit circuit of a complete magnetic holding type tractive electromagnet and a special use.Both can make installation respectively, also can be assembled into an organic whole product.
Fig. 1 is the structural representation of magnetic holding type tractive electromagnet:
It is by upper magnet yoke (1), auxiliary magnetic pole (2), permanent magnet (3), side magnetic yoke (4), lower yoke (5), solenoid (6), bobbin (7), moving (8) unshakable in one's determination, composition such as back-moving spring (9) element of etc.ing.Central part in element (1), the vertical element (2) of installing, central axial line (vertically) with them is a symmetry axis, and element (3) sticking is in place on the plane, the left and right sides of element (1), and the symmetrical too sticking of element (4) is on element (3).Element (6) be one flat around coil, bottom insertion with element (7) of vertical central axis hole is fixed in the space of element (2) and (3), its lower wing plate is pressed on the horizontal position of element (4), makes two contact planes up and down of element (3) can access certain interference fit.Element (5) is sleeved on the upper end of element (4) and (7), and its outside faying face forms good location with element (4) and cooperates, and inboard vertical plane then constitutes a guide rail bearing regularization, that element (8) insertion is slided.Element (9) is a stage clip, be sleeved on the outside table top of element (2), work in coordination with the deadweight of element (8), make magnetic keep tractive electromagnet under release condition, to keep enough wide working gas gap and provide the necessary moment of reaction controlled device (as the moving contact rack of electromagnetic relay, contactor, valve plug etc.).In a word, above-mentioned magnetic keeps all elements of tractive electromagnet, no matter in geometry, the installation site, structural behaviour, the magnetic property aspect, without exception with element (1), (2) central axial line is a symmetry axis, constitute some groups of symmetrical work magnetic circuits, promptly by element (1), (3), (4), (5), (8), (2), (9) closed permanent magnetic polarization magnetic circuit of Gou Chenging and element (2), (4), (5), (8), (9), (6) electromagnetic circuit of Gou Chenging, these two magnetic circuits are in work, based on the These characteristics of structural design of the present invention, the main flux that forces the permanent magnetic magnetic line of force and the electromagnetism magnetic line of force is passed element (2) each other abreast with the deflection of the best, (8) the magnetic circuit master working gas gap that forms between.
In addition, in order more effectively to improve the service behaviour of magnetic circuit, a new solution provided by the invention is to the glade plane space between element (5) and (8) and cooperates area to carry out the dual control of appropriateness, for example the gap is compressed to about tens of microns, the magnetic resistance at the area place that is slidingly matched is descended, with the movement rate that satisfies element (8) and the designing requirement of tractive electromagnet magnetic confining force.For the balance regulation relation between the electromagnetism adhesive moment, magnetic holding torque and the release moment three that take into account magnetic maintenance tractive electromagnet simultaneously, another new solution provided by the invention is the axial height H of regulation element (2)
1Must be greater than the axial height H of element (3)
2And put in the interior enough axial height H of element (6)
3The 3rd new solution provided by the invention is two planes up and down with 90 ° of crossing elements of described central axis of symmetry (3), its permanent magnetic polarity should be opposite each other, for example working as last plane is that N polarity chron lower plane is a S polarity, and last plane is that S polarity chron lower plane is a N polarity.
Aspect material structure, element (3) is preferably selected hard ferrite or other permanent magnetic material of high-coercivity for use, other magnetic material that element (1), (2), (4), (5), (8) can be selected the little electrical pure iron of remanent magnetism for use or have similar physical properties, element (7) should be selected the hard non-magnet material for use.
Fig. 2 is the pulse control unit electrical block diagram that magnetic keeps the tractive electromagnet special use: AC power (17), rectification circuit (16) provides essential excitation dc power for element (6), capacitor (10) is serially connected in the excitation main circuit, both can be arranged on positive terminal, also can reconfiguration to negative pole end.This capacitor (10) does not allow to occur oscillatory occurences with the equivalent electric circuit that D.C. resistance, inductance, the distributed capacitance of element (6) are formed.Be attempted by on the field power supply of capacitor (10) inlet wire side after switch (12) and current limiting element (11) series connection: the former can be for example conventional push button or an one pole diverter switch etc. of a kind of hand switch, also can be for example thyristor or transistor etc. of a kind of electronic switch (containing electromagnetic switch); The latter can be for example resistor or an inductor etc. of a kind of common voltage drop element, also can be a kind of electronic pressure-regulating component such as automatic control pressure regulation transistor etc.Supply voltage sampler (14) is selected electrooptic cell or electromagnetic component for example light-emitting diode, pulse transformer, electromagnetic relay etc. usually for use, and trigger (13) is then selected corresponding light-sensitive element or pulse transformer etc. for use.Diode (15) should be serially connected in the anodal main circuit of inlet wire side of element (11) and (12), plays non-return buffer action (supply voltage sampler (14) is also received the AC power rear flank and can be given cancellation).
In conjunction with Fig. 1 and Fig. 2, operation principle of the present invention is summarized as follows: during initial bit, the main working gas gap that forms between magnetic holding type tractive electromagnet element (8) and element (2) has certain width, at this moment, its magnetic resistance in permanent magnetic polarization magnetic circuit is high value, under the reaction force of element (9), this electromagnet is in release condition.When connecting AC power (17), capacitor (10) momentary charge, for solenoid (6) provides a huge pulsed operation electric current, the sense of current is K(+) → G(-), the permanent magnetic magnetic line of force in the work magnetic circuit and the stack of electromagnetism magnetic line of force forward, element (8) adhesive, at this moment, the width of described main working gas gap trends towards zero and (looks element (2), (8) contact matching face machining accuracy and decide), its magnetic resistance is low resistance, capacitor (10) enters " every straight " energy storage state because of being full of electric charge, solenoid (6) is dead electricity automatically, and moving (8) unshakable in one's determination magnetic under the effect of permanent magnetic polarization system remains on attracting state.Cause the field power supply dead electricity (containing normal separating brake process) of solenoid (6) interior along with a certain reason, supply voltage sampler (14) sends out a corresponding electric light or electromagnetic pulse signal, promote trigger (13) work, export the pulse signal of photoelectricity or magnetoelectricity, (electronics) switch (12) is connected, the energy that capacitor (10) stores up is through (electronics) switch (12), current limiting element (11), solenoid (6) constitutes an anti-discharge loop, the sense of current is G(+) → K(-), the permanent magnetic magnetic line of force of polar system and the electromagnetism magnetic line of force of electromagnetic system oppositely superpose in the tractive electromagnet work magnetic circuit, because the reaction force of back-moving spring (9), moving (8) unshakable in one's determination return to release condition immediately.
It needs to be noted, selecting for use and working of element (3) and element (9) is one group of diametrically opposite contradiction: when element (3) is used the permanent magnetic material of high energy product instead, shorten the pickup time of magnetic holding type tractive electromagnet, the magnetic holding torque strengthens, but increase release time relatively, discharges control sensitivity and descend to some extent; When element (9) was used the stage clip of high-tension instead, increased the pickup time of electromagnet, and the magnetic holding torque weakens, and discharges control sensitivity and improve, and accelerate release time.Therefore as long as selecting for use of element (3) and (9) carried out suitable optimization to be cooperated, the present invention can provide a kind of efficient electricity-saving type magnetic QA, that be suitable for frequent operation to keep tractive electromagnet.
Fig. 1 is again the embodiment of a magnetic freeze mode A.C. contactor.Element (1)---element (9) constitutes described magnetic holding type tractive electromagnet.Element (18) is the moving contact rack of contactor, (19) be moving contact, (20) be the moving contact fixator pins, (21) be the moving contact stage clip, (22) be fixed contact, (23) for printed circuit board (PCB), described element (10), (11), (12), (13), (14), (15), (16) etc. are housed on it, (24) be the closure casing of contactor, and (25) are that ac excitation power supply goes between.Element (8) links with element (18) rigidity, and total overall dimension is identical with CJ20-40 type A.C. contactor, and electric tie lines is also compatible fully.
Fig. 3 shows the embodiment of a magnetic freeze mode electromagnetically operated valve.Element (1)---element (9) constitutes described magnetic holding type tractive electromagnet.Element (26) is the clamp nut of element (2), (27) be sealing valve core cover, the use non-magnet material is made, the expansion (thickening) that can be considered coil of wire frame (7) in principle partly, (28) are the rigidity connecting rod, (29) are valve plug, (30) be the valve plug cylinder, (31) be valve seat, (32) are valve gap, and (33) are the sealing volume.
Fig. 4 shows the principle tie lines figure of a magnetic holding type tractive electromagnet pulse control unit circuit embodiments.Element (11) is a resistor R
3, (12) are high back-pressure transistor T
4, (13) are phototriode T
2, resistor R
2Both be T
2Provide bias current to be T again
4Provide base current to hold a concurrent post capacitor C simultaneously
2Integrating resistor, prevent that switch (12) from misleading connecting trying to be the first in a flash of power switch.Resistor R
1And light-emitting diode T
1Element (14), capacitor C
1The output voltage of piece smooth current circuit (16) exempts to make T
1Moving near pulsating direct current electrical zero mistiming.Element (34) is the optocoupler integral device, (35) be main order control contact, it makes capacitor (10) charging, solenoid (6) forward conduction when closed, tractive electromagnet magnetic keeps adhesive, " every straight " energy storage after charging finishes is when main order control contact (35) disjunction (or AC power dead electricity), through the non-return effect of diode (15), make solenoid (6) reverse-conducting, magnetic holding type tractive electromagnet discharges automatically.This shows that the present principles tie lines is the complete compatible control circuit of a kind of and common alternating current tracting magnet.
Fig. 5 shows the principle tie lines figure of another embodiment of pulse control unit circuit of the present invention.Different with Fig. 4: element (12) adopts thyristor T
4, increased a diode T newly
5, play the anti-interference effect of step-down.Remaining element number and operation principle are described identical with Fig. 4.
Fig. 6 shows the principle tie lines figure of the 3rd embodiment of pulse control unit circuit of the present invention.Switch (12) is an one pole diverter switch, during actuating switch connection cathode power supply, and solenoid (6) forward conduction, tractive electromagnet adhesive and magnetic keep; During actuating switch connection current limiting element (11) (as the position of this figure demonstration), solenoid (6) reverse-conducting draws electric electromagnet and is returned to release condition.
Fig. 7 shows the principle tie lines figure of the 4th embodiment of pulse control unit circuit of the present invention.Element (14) is the magnet exciting coil of a voltage relay, and switch (12) is a pair of switching contact of this relay, removes in addition, and all the other element numbers of this figure are described identical with Fig. 4 with operation principle.
In mid-June, 1989, the inventor has developed first magnetic holding type tractive electromagnet model machine according to defined terms of the present invention, and has set about carrying out making the relevant preparation of producing.In order to solve the problem compatible with existing standard contactor housing " change generation ", the inventor continues to develop second generation model machine again, and supporting being installed on electromagnetically operated valve and the contactor obtained very good economical and technical benefit.
Fact proved that the major advantage that the present invention has is:
1. the operating characteristic of ultrahigh speed action can reach the Millisecond standard. The First model machine developed of the inventor for example, total travel is 8 millimeters, the adhesive of actual measurement is not more than 2 milliseconds (30 mean values) actuation time.
2. highly reliable operating characteristic depends primarily on permanent magnetic material and simple control circuit that magnetic keeps operation not have continuous mechanical vibration source and traditional pyrotoxin (magnet exciting coil, short-circuited conducting sleeve) and used high-quality, so be suitable for frequent operation.
3. efficient electricity-saving characteristic, be because magnet exciting coil only in the momentary pulse electricity consumption (the pulsewidth maximum is hundred Milliseconds, and minimum of a value is Millisecond) of modifier duty. Also changing at milliwatt to hundred milliwatt inter-stage from power consumption of control circuit. Power saving rate becomes with the connection coefficient of consumer, compares with existing like product, and optimum value can reach about 99.9%.
4. magnet exciting coil adopts dc source without exception, compares with electromechanical devices such as existing alternating current electromagnetic valve, magnetic starter, contactors, has saved a large amount of reactive powers, has improved the power factor of power supply grid.
5. the magnet exciting coil electromagnetic wire is selected by the overcurrent method of operation, has saved copper material, has dwindled the tractive magnet volume, has alleviated weight.
6. the silicon steel sheet that has replaced the heavy price that tradition is used in magnetic starter, the contactor with a large amount of mild steel.
7. simplify production technology, improved the arc extinction performance of electromagnetic relay switch device.
8. entirely compatible with existing similar alterating and direct current device of air on control circuit.
Claims (7)
1, magnetic holding type tractive electromagnet and control circuit thereof are supporting motor-operating mechanism and the dedicated control circuits that is installed in (interior) on the electromechanical devices such as electromagnetically operated valve, electromagnetic relay, magnetic starter, contactor, electromagnetic brake, it is characterized in that:
(a), each tractive electromagnet is by upper magnet yoke [1], auxiliary magnetic pole [2], permanent magnet [3], side magnetic yoke [4], lower yoke [5], solenoid [6], bobbin [7], moving unshakable in one's determination [8], back-moving spring [9] element of etc.ing is formed, and is symmetry axis with auxiliary magnetic pole [2] and the central axis that moves iron core [8], be formed on geometry, the installation site, structural behaviour, the symmetrical work magnetic circuit in magnetic property aspect, wherein, permanent magnetic magnetic circuit is closed symmetrical magnetic circuits, and the permanent magnetic magnetic line of force and the main flux of the electromagnetism magnetic line of force pass the main working gas gap of moving iron core [8] and parallel each other in (contain local glade plane space cooperate) above-mentioned magnetic circuit;
(b), one be serially connected in the capacitor [10] in solenoid [6] main circuit and be attempted by switch [12], current limiting element [11] on this capacitor inlet wire side field power supply, constituted and used same solenoid [6] control magnetic to keep the pulse control unit circuit of tractive electromagnet adhesive and release.
2,, it is characterized in that the axial height H of auxiliary magnetic pole (2) by the magnetic holding type tractive electromagnet and the control circuit thereof of claim 1 regulation
1Must be greater than the axial height H of permanent magnet (3)
2And put in the interior enough axial height H of solenoid (6)
3
3,, it is characterized in that the glade plane space between lower yoke (5) and moving (8) unshakable in one's determination cooperates and cooperate area by the magnetic holding type tractive electromagnet and the control circuit thereof of claim 1 regulation.
4, by the magnetic holding type tractive electromagnet and the control circuit thereof of claim 1 regulation, it is characterized in that and two planes up and down of 90 ° of crossing permanent magnets of central axis (3) that its permanent magnetic polarity is opposite each other.
5, by the magnetic holding type tractive electromagnet and the control circuit thereof of claim 1 regulation, it is characterized in that the electromagnetic wire sectional area of solenoid (6) is selected for use by the overcurrent operational mode without exception.
6, magnetic holding type tractive electromagnet and the control circuit of stipulating by claim 1 thereof; when it is characterized in that switch (12) for electronic switch (transistor, thyristor) or electromagnetic switch, exciting voltage sampler (14), trigger (13), current limiting element (11), capacitor (10) constitute " a motor synchronizing protective circuit " that makes the magnetic holding type tractive electromagnet that is operated in attracting state automatically return to release condition when the field power supply dead electricity.
7,, it is characterized in that permanent magnet (3) and the back-moving spring (9) that is used with it by the magnetic holding type tractive electromagnet and the control circuit thereof of claim 1,4 regulations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89213167 CN2052932U (en) | 1989-09-05 | 1989-09-05 | Magnet holding traction electromagnet and controlled circuit thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89213167 CN2052932U (en) | 1989-09-05 | 1989-09-05 | Magnet holding traction electromagnet and controlled circuit thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2052932U true CN2052932U (en) | 1990-02-14 |
Family
ID=4869211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89213167 Expired - Lifetime CN2052932U (en) | 1989-09-05 | 1989-09-05 | Magnet holding traction electromagnet and controlled circuit thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2052932U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102054627A (en) * | 2009-11-06 | 2011-05-11 | 施耐德电器工业公司 | Electromagnetic actuator and electrical contactor comprising such actuator |
-
1989
- 1989-09-05 CN CN 89213167 patent/CN2052932U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102054627A (en) * | 2009-11-06 | 2011-05-11 | 施耐德电器工业公司 | Electromagnetic actuator and electrical contactor comprising such actuator |
| CN102054627B (en) * | 2009-11-06 | 2015-02-11 | 施耐德电器工业公司 | Electromagnetic actuator and electrical contactor comprising such actuator |
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| PB01 | Publication | ||
| C53 | Correction of patent for invention or patent application | ||
| CB02 | Change of applicant information |
Address of the applicant after: Chengdu Province, Sichuan province Cao Cao Lane No. 30, Sichuan Institute of emerging electrical applications technology, 610081 Address of the applicant before: Sichuan Chengdu Xinxing Electric Application Technology Research Institute, 1 Bai Bai street, Sichuan, China |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT ADDRESS; FROM: BAISI STREET 1ST, CHENGDU, SICHUAN PROVINCE, SICHUAN PROVINCE XINXING ELECTRIC APPLIED TECHNOLOGY INSTITUTE TO: 610081, XINXINGDIANQIYINGYONGJISHUYANJIU INSTITUTE, SICHUAN PROV PROVINCE, NO. 30, WAICAOJIA LANE, CHENGDU CITY, SICHUAN PROVINCE |
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| C17 | Cessation of patent right | ||
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