CN1043276C - Magnetically held-on type electromagnet and control circuit thereof - Google Patents
Magnetically held-on type electromagnet and control circuit thereof Download PDFInfo
- Publication number
- CN1043276C CN1043276C CN91108305A CN91108305A CN1043276C CN 1043276 C CN1043276 C CN 1043276C CN 91108305 A CN91108305 A CN 91108305A CN 91108305 A CN91108305 A CN 91108305A CN 1043276 C CN1043276 C CN 1043276C
- Authority
- CN
- China
- Prior art keywords
- magnetic
- holding electric
- electric magnet
- circuit
- switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Electromagnets (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
The present invention relates to a polarized electromagnet with a constant magnet and a special control circuit. Through holes are arranged on a subsidiary magnetic pole of a fixed iron core, necessary push rods, traction rods and hand-operated operation rods are arranged on the hole and a moving iron core, and thereby, various traction type or push type magnetism maintenance electromagnets having the functions of hand-operated operation suction and release are formed. Four typical unit circuits for suction and release by the same magnetism maintenance type electromagnet operated by an electromagnetic coil in the process of switching off or switching off a field power supply are formed by being matched with electronic and electric elements, such as special pulse switches, energy storage capacitors, etc. The present invention has the characteristics of simple technology structure, high efficiency, power saving, large initial suction force, identical external control circuit and traditional product, etc.
Description
The present invention relates to a kind of magnetic-holding electric magnet that has permanent magnet.The electromagnet field that belongs to low-voltage electrical apparatus is the supporting motor-operating mechanism that is installed on the electromechanical devices such as electromagnetically operated valve, electromagnetic relay, contactor, electromagnetic brake, electromagnetic vibrator.
In prior art, though Chinese patent CN88219029.6 provides the manual-operating mechanism of a magnetic-holding electric magnet (valve), but only be only applicable to manual releasing (pass valve) operation, the control circuit that does not also have supporting special use, thereby, certain restriction and inconvenience are arranged when using under some occasion.
Though Chinese patent CN89105949.0 provides a kind of and has used same solenoid operated magnetic-holding electric magnet adhesive or release and make magnetic-holding electric magnet be automatically returned to the control circuit for magnetically held electromagnet of release condition by the sticking state when field power supply disappears.But still there are following three weak points in it: the first, and this electromagnet is a kind of towed magnetic-holding electric magnet, its direction of operating Hou Buneng sometimes satisfies by the instructions for use of operating mechanism.The second, lack necessary manual-operating mechanism.The 3rd because this patent has sealed in capacitor C in the main circuit of solenoid, therefore, and when the user requires magnetic-holding electric magnet to have big starting electromagnetic attraction.This capacitor volume may be very big, do not have actual application value.
In order to overcome the weak point of prior art:
First purpose of the present invention provides a kind of driving magnetic-holding electric magnet that has electric operating function and manual operation function simultaneously.
Second purpose of the present invention provides a kind of towed magnetic-holding electric magnet that has electric operating function and manual operation function simultaneously.
The 3rd purpose of the present invention provides a kind ofly to be had big starting electromagnetic attraction, use same solenoid operated magnetic-holding electric magnet adhesive or release and discharges the control circuit of described magnetic-holding electric magnet during as no-voltage or under voltage automatically at field power supply.The 4th purpose of the present invention provides another kind and has big starting electromagnetic attraction, uses same solenoid operated magnetic-holding electric magnet adhesive or release and discharge the control circuit of described magnetic-holding electric magnet during as no-voltage or under voltage automatically at field power supply.
Purpose of the present invention can realize by following measure:
Magnetic-holding electric magnet, comprise upper magnet yoke (1), fixing magnetic core (2), permanent magnet (3), side magnetic yoke (4), lower yoke (5), solenoid (6), bobbin (7), moving (8) and back-moving spring (9) unshakable in one's determination, the polarity on two planes up and down of permanent magnet (3) that is installed in the central axial line both sides is opposite each other, central part in lower yoke (5) is provided with the guide rail bearing that moving (8) unshakable in one's determination insertion is slided, central axis with fixing magnetic core (2) and moving (8) unshakable in one's determination is a symmetry axis, be formed on geometry, the installation site, structural behaviour, the symmetrical work magnetic circuit in magnetic property aspect, wherein permanent magnetic circuit is closed symmetrical magnetic circuits when electromagnetic actuation, the main flux of the permanent-magnet line and the electromagnetism magnetic line of force passes the main working gas gap of moving (8) unshakable in one's determination in the described magnetic circuit, the fixed core of described electromagnet be upper magnet yoke (1) and fixedly the central axis place of magnetic core (2) through hole (50) is set, insert push rod (51) in the described hole, at the other end central axis place manual lever (54) is set away from the moving iron core (8) of through hole (50), the outer surface of the outside end face of described moving iron core (8) or close described guide rail bearing medial flange one end is provided with the confined planes of moving (8) movement travel unshakable in one's determination of control, constitutes a kind of driving magnetic-holding electric magnet with manual operation function thus.
Magnetic-holding electric magnet, comprise upper magnet yoke (1), fixing magnetic core (2), permanent magnet (3), side magnetic yoke (4), lower yoke (5), solenoid (6), bobbin (7), moving (8) and back-moving spring (9) unshakable in one's determination, the polarity on two planes up and down of permanent magnet (3) that is installed in the central axial line both sides is opposite each other, central part in lower yoke (5) is provided with the guide rail bearing that moving (8) unshakable in one's determination insertion is slided, central axis with fixing magnetic core (2) and moving (28) unshakable in one's determination is a symmetry axis, be formed on geometry, the installation site, structural behaviour, the symmetrical work magnetic circuit in magnetic property aspect, wherein permanent magnetic circuit is closed symmetrical magnetic circuits when electromagnetic actuation, the main flux of the permanent-magnet line and the electromagnetism magnetic line of force passes the main working gas gap of moving (8) unshakable in one's determination in the described magnetic circuit, the fixed core of described electromagnet be upper magnet yoke (1) and fixedly the central axis place of magnetic core (2) through hole (50) is set, insert or screw in manual lever (52) in the described hole, at the other end central axis place draw bar (5 3) is set away from the moving iron core (8) of through hole (50), the outer surface of the outside end face of described moving iron core (8) or close described guide rail bearing medial flange one end is provided with the confined planes of moving (8) movement travel unshakable in one's determination of control, constitutes a kind of towed magnetic-holding electric magnet with manual operation function thus.When described through hole (50) is a screw, manual lever (52) is a bolt special that matches with it, the one end has radial flange, described flange imbeds in the central aperture (55) of a sealing moving (8) unshakable in one's determination, and its other end stretches out in the outer space of through hole (50) and is provided with the described screw rod of manual operation makes the nut (57) of axial motion or groove, flange, handgrip and the operating surface with similar functions.The central axis place of an end of the moving iron core (8) of close described through hole (50) is provided with an axial central aperture (55) and clamp (56).
By a reclosing pulse switch (109 '), closing pulse circuits for triggering (106 '), accumulator (107 '), the non-return diode of energy storage (105 '), gate-dividing pulse switch (103 '), current limiting element (104 '), supply voltage sample trigger device (102 ') has constituted to be connected or is using during the disjunction field power supply same solenoid (6 ') described magnetic-holding electric magnet adhesive of operation or release and discharging the control circuit of described magnetic-holding electric magnet during as no-voltage or under voltage automatically at field power supply; Described reclosing pulse switch (109 ') is the electronic switch of a transistor in described magnetic-holding electric magnet adhesive automatic conducting of moment and automatic disjunction after adhesive is finished, thyristor, field effect tubing, and it must be serially connected in the main circuit of described solenoid (6 '); Described closing pulse circuits for triggering (106 ') are single stabilization delay circuits, when connecting the field power supply of described control circuit described closing pulse circuits for triggering (106 ') trigger described reclosing pulse switch (109 ') conducting approximate number millisecond to the several seconds automatically with its disjunction; Described accumulator (107 ') is a capacitor, and it must be connected in parallel with described reclosing pulse switch (109 '); The non-return diode of described energy storage (105 ') must be connected in the main circuit of the dc excitation power between described supply voltage sample trigger device (102 ') and described gate-dividing pulse switch (103 '), the current limiting element (104 '); Described gate-dividing pulse switch (103 ') be in described magnetic-holding electric magnet attracting process, be in interlocking disjunction state and in dispose procedure automatically a transistor of conducting, thyristor, field effect tubing constitute electronic switch, it with the main circuit of the described dc excitation power that is connected in the non-return diode of described energy storage (105 ') rear side after a described current limiting element (104 ') that is made of resistor or electronic pressure-regulating component or PCT thermistor is connected again in parallel on; Described supply voltage sampler (102 ') is the electronic switch that a resistor or photoelectric cell class constitute, it is connected in parallel on the main circuit of input of described dc excitation power of described control circuit, triggers described gate-dividing pulse switch (103 ') conducting to described dc excitation power sampling and when this power supply dead electricity.
By a reclosing pulse switch (109), closing pulse circuits for triggering (106), accumulator (107), the non-return diode of energy storage (105), gate-dividing pulse switch (103), current limiting element (104), shunting check diode (108), gate-dividing crosslinking lock switch (110), supply voltage sample trigger device (102) has constituted to be connected or is using during the disjunction field power supply same solenoid (6) described magnetic-holding electric magnet adhesive of operation or release and discharging the control circuit of described magnetic-holding electric magnet during as no-voltage or under voltage automatically at field power supply; Described reclosing pulse switch (109) is the electronic switch of a transistor in described magnetic-holding electric magnet adhesive automatic conducting of moment and automatic disjunction after adhesive is finished, product brake tube, field effect tubing, and it must be serially connected in the negative or positive electrode main circuit of described solenoid (6); Described closing pulse circuits for triggering (106) are made up of a capacitor and a resistors in series, the other end of described capacitor is connected with the dc excitation power of described control circuit, when connecting the field power supply of described control circuit described closing pulse circuits for triggering (106) trigger described reclosing pulse switch (109) conducting approximate number millisecond to the several seconds automatically with its disjunction; Described accumulator (107) is made up of a capacitor and a resistors in series, a non-return diode of energy storage (105) or a shunting check diode (108) are serially connected among the foregoing circuit, then whole series circuit are connected in parallel on the main circuit of described dc excitation power of described reclosing pulse switch (109) and described solenoid (6) inlet wire side; The non-return diode of described energy storage (105) must be connected in the negative or positive electrode main circuit of dc excitation power of described accumulator (107) and described gate-dividing pulse switch (103) and described current limiting element (104) front side, but also can be serially connected among the series circuit of described accumulator (107); Described shunting check diode (108) is connected among the described accumulator (107), and its negative electrode is connected with the negative pole of described dc excitation power main circuit; Described gate-dividing pulse switch (103) be in described magnetic-holding electric magnet attracting process, be in interlocking disjunction state and in dispose procedure the automatically electronic switch or the light-operated switch of a transistor of conducting, thyristor, field effect tubing, it with the main circuit of the described dc excitation power that is connected in the non-return diode of described energy storage (105) rear side after a described current limiting element (104) that is made of resistor or electronic pressure-regulating component or PCT thermistor is connected again in parallel on; Described gate-dividing crosslinking lock switch (110) be in described magnetic-holding electric magnet attracting process, be in interlocking disjunction state and in dispose procedure the automatic electronic switch that constitutes of a crystal diode of conducting, thyristor, voltage switch diode, transistor, the one end is connected with the series connection contact of described reclosing pulse switch (109) with described solenoid (6), and of described capacitor that its other end must be connected to described accumulator (107) can constitute on the pole plate in the reverse field discharge of described control circuit loop; Described supply voltage sampler (102) is the electronic switch that a resistor or photoelectricity class component constitute, it is connected in parallel on the main circuit of input of described dc excitation power of described control circuit, triggers described gate-dividing pulse switch (103) conducting to described dc excitation power sampling and when this power supply dead electricity or the under voltage.The resistance value of the described resistors in series of described accumulator (107) is during much larger than the resistance value of described solenoid (6), can be ignored by the shunting action to the reverse exciting current of described magnetic-holding electric magnet that described resistors in series causes, described shunting check diode (108) can give cancellation.The described series capacitor of described accumulator (107) and described resistor can replace the described series capacitor and the described resistor of described closing pulse circuits for triggering (106).When described gate-dividing crosslinking lock switch (110) is a transistor, also be connected in series a protection diode D11 who prevents that described triode emitter inverse from puncturing between the base stage of described triode and the excitation dc power negative pole.
Below with reference to structure embodiment, control circuit theory diagram and embodiment the present invention is made into detailed description.
Fig. 1 is a driving magnetic-holding electric magnet structure embodiment A
Fig. 2 is towed magnetic-holding electric magnet structure Embodiment B
Fig. 3 is towed magnetic-holding electric magnet structure Embodiment C
Fig. 4 is towed magnetic-holding electric magnet structure embodiment D
Fig. 5 is a control circuit for magnetically held electromagnet theory diagram 1
Fig. 6 keeps the electric control circuit of anti-iron theory diagram 2 for magnetic
Fig. 7 is driving magnetic-holding electric magnet structure embodiment 1
Fig. 8 is control circuit for magnetically held electromagnet embodiment 1
Fig. 9 is control circuit for magnetically held electromagnet embodiment 2
Figure 10 is control circuit for magnetically held electromagnet embodiment 3
Figure 11 is control circuit for magnetically held electromagnet embodiment 4
Figure 12 is control circuit for magnetically held electromagnet embodiment 5
Figure 13 is control circuit for magnetically held electromagnet embodiment 6
As seen from Figure 1, this be on the basis of the granted patent CN89105949.0 that the inventor has obtained, propose through further improving a kind of structure embodiment A of magnetic-holding electric magnet.Wherein, described magnetic-holding electric magnet comprises upper magnet yoke (1), fixing magnetic core (2), permanent magnet (3), side magnetic yoke (4), lower yoke (5), solenoid (6), bobbin (7), moving (8) unshakable in one's determination, back-moving spring (9), the polarity on two planes up and down of permanent magnet (3) that is installed in the central axial line both sides is opposite each other, central part in lower yoke (5) is provided with the guide rail bearing that moving (8) unshakable in one's determination insertion is slided, central axis with fixing magnetic core (2) and moving (8) unshakable in one's determination is a symmetry axis, be formed on geometry, the installation site, structural behaviour, the symmetrical work magnetic circuit in magnetic property aspect, wherein permanent magnetic circuit is closed symmetrical magnetic circuits when electromagnetic actuation, the main flux of the permanent-magnet line and the electromagnetism magnetic line of force passes the main working gas gap of moving (8) unshakable in one's determination in the described magnetic circuit, is made of the electromagnetic circuit of magnetic-holding electric magnet element (2)-(4)-(5)-(8)-δ-(2); Constitute the permanent magnetic circuit of magnetic-holding electric magnet by element (3)-(1)-(2)-δ-(8)-(5)-(3), the latter becomes closed symmetrical magnetic circuits (contain the part that forms between lower yoke (5), moving unshakable in one's determination (8) be slidingly matched gap) when magnetic-holding electric magnet sticking state, the main working gas gap that δ has indicated moving iron core is the impulse stroke of electromagnet, H
1Indicated the axial height of the magnetic core (2) of fixed core-fixedly and upper magnet yoke (1), H
3Indicate fixing magnetic core (2) and put in the axial height of solenoid (6).Different with CN 89105949.0 patents is: the present invention the fixed core of described electromagnet-be upper magnet yoke (1) and fixedly the central part place of magnetic core (2) set up through hole (50), in the hole, insert push rod (51) is installed, it preferably adopts non-magnet material to make, the one end stretches out the outer space of upper magnet yoke (1), with supporting being linked to each other by behaviour merit mechanism of magnetic-holding electric magnet (such as valve rod etc.), the other end then puts in to press in the central aperture of moving (8) unshakable in one's determination or with moving (8) unshakable in one's determination maintenance and cooperates.The slip outer surface of the inner surface of through hole (50) and push rod (51) has enough fineness, so that push rod (51) reduces the frictional force between the two as far as possible when doing axial motion.Manual lever (54) is installed in the other end away from the moving iron core (8) of through hole (50), should be fixedly connected between them, and operator is housed (59) in the outboard end of manual lever (54).In addition, on the suitable axial height of moving (8) unshakable in one's determination a radial flange is set, it constitutes moving stop confined planes unshakable in one's determination with the inboard vertical plane of the guide rail bearing that is arranged on side magnetic yoke (5) central part.During initial condition, at back-moving spring (9) or under by the reaction force of operating mechanism, the main working gas gap of moving (8) unshakable in one's determination is that the δ value is because the magnetic resistance of air gap is very big, the polarization force that permanent magnet (3) forms in permanent magnetic circuit can't overcome the above-mentioned moment of reaction, therefore, magnetic-holding electric magnet is in stable release condition.When feeding the pulse current of a suitable polarity or a certain alternating pulse in the solenoid (6), electromagnetic circuit is by the forward excitation, forward exciting current I
HThe electromagnetism starting suction F that produces
HBe enough to overcome the above-mentioned moment of reaction, moving unshakable in one's determination (8) adhesive, δ → 0 value, push rod (51) is pushed outwards to be gone out and drives by operating mechanism (omit among Fig. 1 and do not paint) motion, and it is the sticking state that magnetic-holding electric magnet changes another new stable state over to.At this moment, because the permanent magnetic circuit of electromagnet has been closed magnetic path, so constant even solenoid (6) some intervals of δ＞0 (even) dead electricity magnetic-holding electric magnet will remain on the sticking state.As if in the solenoid (6) of magnetic-holding electric magnet, feeding one and above-mentioned opposite polarity dc pulse current (allowing to contain small part alternation composition), as long as the amplitude and the width of pulse are enough, at this moment because reverse exciting current I
FThe reverse magnetic flux of inducting in electromagnetic circuit will oppositely superpose with the forward polar flux that flows through in the permanent magnetic circuit, the reverse excitation of its generation F that makes a concerted effort
F＞0 value, at back-moving spring (9) or under by the reaction force of operating mechanism, moving (8) unshakable in one's determination discharge immediately, and main working gas gap is by 0 → δ value, and magnetic-holding electric magnet is returned to the initial release state, and push rod (51) servo-actuated iron core (8) moves to the inside and keeps in the center.H
4Indicate moving iron core (8) and when the electromagnet release condition, stretched out the axial height of side plane outside the lower yoke (5), its optimum value H
4〉=δ, otherwise, the magnetic resistance of magnetic circuit certainly will increase, and tangible decline all can take place in the starting power of electromagnet and magnetic confining force.Q
2Minimum air void or the nonmagnetic substance gap that must keep between the radially inner edge of the radially outer edge of fixing magnetic core (2) or horizontal direction outer rim and permanent magnet (3), side magnetic yoke (4) or the horizontal direction inner edge have been indicated.This value too hour fixedly magnetic core (2), and permanent magnet (3) between leakage flux excessive, permanent magnet is close to magnet short-cut path, thereby the magnetic confining force of electromagnet can descend significantly.The magnetic resistance of the electromagnetic circuit that is made of element (2)-(4)-(5)-(8)-δ when too big increases, and its starting electromagnetic attraction descends to some extent, therefore, generally speaking, Q
2Minimum value is a few tenths of a mm, and maximum is tens of millimeters, and it will be decided on the magnetic energy product of permanent magnet (3) and the production engineering specifications of magnetic-holding electric magnet.D1 has indicated the interior circular diameter or the horizontal inner edge of permanent magnet (3) and has opened distance, and D2 has indicated side magnetic yoke (4) and opened distance with the interior circular diameter or the horizontal inner edge of permanent magnet (3) contact plane part, in the ordinary course of things D1 〉=D2.When D2＞D1, a part of magnetic energy product of permanent magnet (3) can't enter closed polarization magnetic circuit by the contact guiding of side magnetic yoke (4), and the magnetic confining force of magnetic-holding electric magnet will descend, so only just can adopt this kind design under some occasion.Under special circumstances, for example control circuit is malfunctioning, during the field power supply dead electricity, the user can utilize operator will move iron core (8) to (59), push rod (54) and press the sticking position or be pulled up to the release position, thereby realizes the manual operation handoff functionality to magnetic-holding electric magnet very easily.
Fig. 2 shows the structure Embodiment B of towed magnetic-holding electric magnet.Insert within the through hole (50) of different with Fig. 1 is present embodiment magnetic-holding electric magnet manual lever (52) is installed, its medial end is fixedly connected with moving (8) unshakable in one's determination, and outboard end then is equipped with operator (59).On the other end, fixedly connected draw bar (53) is housed away from the moving iron core (8) of through hole (50).In order to limit the impulse stroke of moving (8) unshakable in one's determination.Installing and locating card (58) on the horizontal plane of lower yoke (5) outside cooperates with moving (8) unshakable in one's determination and forms a kind of new spacing stop device.Except that above-mentioned, other architectural feature of B embodiment illustrated in fig. 2 and operation principle and Fig. 1 embodiment A are identical.
Fig. 3 shows the structure Embodiment C of towed magnetic-holding electric magnet.Different with Fig. 2 Embodiment B is that back-moving spring (9) is used extension spring instead, and it is installed in the outside of moving unshakable in one's determination (8), can certainly by magnetic-holding electric magnet substituted this extension spring by the reaction force of operating mechanism and moving (8) unshakable in one's determination given stop spacing.Except that above-mentioned, other architectural feature of C embodiment illustrated in fig. 3 and operation principle and Fig. 1 embodiment A are identical.
Fig. 4 shows towed magnetic-holding electric magnet structure embodiment D.Different with aforementioned three kinds of embodiment is at upper magnet yoke (1), the fixing central part place of magnetic core (2), described through hole (50) is a screw, manual lever (52) is a bolt special that matches with it, its end has radial flange or similar structures, and this radial flange imbeds in the central aperture (55) of moving (8) unshakable in one's determination.Clamp (56) is provided with a hole in the middle of being made by ferrimagnet, and manual lever (52) from then on passes and then clamp (56) is fastened on moving (8) unshakable in one's determination, makes it to become an integral core.Magnetic-holding electric magnet when work because the radial dimension of central cavity (55) and clamp (56) endoporus than the radial flange of manual lever (52) or similar structures greatly, and its free travel δ
2Greater than the main working gas gap δ of electromagnet, so manual lever (52) will never influence the operate as normal of moving (8) unshakable in one's determination.As long as the user utilizes operating surface (57) on nut on the manual lever (52) or other groove with similar functions, flange, handgrip, the bar during manual operation, just can make manual lever (52) do up or down axial motion, thereby make iron core (8) sticking or release and need not any external power supply.Except that above-mentioned, other architectural feature of Fig. 4 embodiment D and operation principle and Fig. 1 embodiment A are identical.
Fig. 5 shows the control circuit theory diagram 1 of magnetic-holding electric magnet of the present invention.In order to set forth conveniently, will elaborate according to control circuit for magnetically held electromagnet embodiment 1 shown in Figure 8 simultaneously.Wherein, AC power (100), rectification circuit (101) provide dc excitation power and control power supply for magnetic-holding electric magnet, reclosing pulse switch (109) is an electronic switch of being made up of transistor, thyristor, power field effect pipe etc., it must be serially connected in the excitation main circuit of solenoid (6) (negative or positive electrode all can), is subjected to the triggering of closing pulse circuits for triggering (106) and only connects a brief moment (several milliseconds to the several seconds) and disjunction automatically behind electromagnetic actuation in the magnetic-holding electric magnet attracting process.Closing pulse circuits for triggering (106) are made up of a capacitor and a resistors in series under normal conditions, also can be made up of a single stabilization delay circuit (containing similar trigger), its major function is to be that reclosing pulse switch (109) provides one to start and trigger and the breaking signal source in the moment that magnetic-holding electric magnet is connected field power supply.Accumulator (107) is made up of a capacitor and a resistor in series, this circuit is attempted by on the inlet wire side field power supply main circuit of solenoid (6) and reclosing pulse switch (109), and its major function is pre-charge and provide required energy for magnetic-holding electric magnet when reverse excitation (dispose procedure) when magnetic-holding electric magnet forward excitation (attracting process).The non-return diode of energy storage (105) should be serially connected in the negative or positive electrode circuit of excitation main circuit, also can be serially connected in the charge circuit of accumulator (107), its major function is to stipulate the essential current path of a reverse excitation of magnetic-holding electric magnet (dispose procedure) for the energy that accumulator (107) stores up in advance when field power supply disappears.Shunting check diode (108) is serially connected in the described parallel branch of accumulator (107) equally, its major function is in the reverse excitation process of magnetic-holding electric magnet, the unnecessary discharge loop that resistors in series may form described in the blocking-up accumulator, the energy that accumulator (107) is accumulated can only discharge to solenoid (6).Gate-dividing crosslinking lock switch (110) is usually by a crystal diode, triode, thyristor, compositions such as voltage switch diode, its end is attached on the series connection contact of solenoid (6) and reclosing pulse switch (109), one of described capacitor that the other end must be connected to accumulator (107) can constitute on the pole plate in reverse field discharge loop, and its major function is to make this interlocking switch be in the disjunction state in magnetic-holding electric magnet attracting process (forward excitation) and be field power supply no-voltage or under voltage automatic conducting of moment and current limliting and non-return diode (105) by current limiting element (104) at dispose procedure (oppositely excitation), the non-return effect of shunting check diode (108) automatically shuts down to solenoid (6) back discharge accumulator (107) when the low level.Supply voltage sample trigger device (102) can be the electronic switch that a sample resistance or photoelectricity class component constitute, its major function is to field power supply sampling and synchronous triggering (allowing to have time lag) gate-dividing pulse switch (103) conducting automatically when this power supply dead electricity, thereby constitutes a reverse field circuit by element (107)-(103)-(104)-(6) (110)-(107).Under normal conditions, gate-dividing pulse switch (103) is an electronic switch (as transistor, thyristor, a power field effect pipe etc.), can certainly be light-operated switch (as photoelectrical coupler etc.), its major function is that the electronic release of magnetic-holding electric magnet is handled in main order, but must be in the disjunction state again for a long time and keep corresponding interlock connection in the magnetic-holding electric magnet attracting process.Current limiting element (104) is a kind of decompression current-limiting element, it can be a resistor, also can be an inductor even can also be an electronic pressure-regulating component (as series voltage adjustment pipe etc.) or PTC themistor, its major function is that the reverse field discharge loop for magnetic-holding electric magnet provides a suitable damping element, the forward polar flux that flows through in the reverse magnetic flux of inducting in the magnetic-holding electric magnet electromagnetic circuit and the permanent magnetic circuit is oppositely superposeed, the reverse excitation of its generation F that makes a concerted effort
FThereby＞0 value makes magnetic-holding electric magnet can discharge and control remanent magnetism in its magnetic circuit reliably to be reached and allows the stage ignored in the engineering.
Fig. 6 shows control circuit for magnetically held electromagnet theory diagram 2 of the present invention.Compare with Fig. 5, this schematic block circuit diagram has been cancelled shunting check diode (108) and gate-dividing crosslinking lock switch (110), reclosing pulse switch (109 ') still be a "on" position promptly be in the conducting position and after the magnetic-holding electric magnet adhesive switch of controlled disjunction, but this switch can only be the electronic switch that a transistor or thyristor or power field effect pipe etc. constitute, and it provides essential startup triggering and breaking signal source by closing pulse circuits for triggering (106 ') for it.Accumulator (107 ') only is a capacitor, it must be in parallel with reclosing pulse switch (109 '), its major function has two: the first, is full of electric charge in advance so that for the reverse excitation of magnetic-holding electric magnet provides enough anti-discharge energies, just as the function of the described capacitor in the accumulator shown in Figure 5 in the magnetic-holding electric magnet attracting process; The secondth, at chien shih at a flash of the closed conducting of reclosing pulse switch (109 ') its " short circuit ", be the forward exciting current I of electromagnet
HProvide one with reclosing pulse switch (109 ') duplexure in parallel, in order to do the conducting impulse current that reduces (109 '), simultaneously, the voltage that (at this moment the energy storage capacitor of described accumulator has been filled to full voltage) clamps down on (109 ') two ends when the reverse excitation of magnetic-holding electric magnet makes it and can not suddenly change, and prevents that the overvoltage that the inductive component of solenoid (6 ') causes when reclosing pulse switch (109 ') turn-offs from suffer damage it.Except that above-mentioned, the structure and the operation principle of Fig. 6 and two kinds of control circuits of Fig. 5 are identical.
It needs to be noted: in the control circuit theory diagram shown in Fig. 5,6, the forward exciting current I of magnetic-holding electric magnet (being solenoid (6) or (6 '))
HIt flows to and is K+ → G-, oppositely exciting current I
FIt flows to and to be G+ → k-, and all adopts this identical regulation among the control circuit embodiment afterwards.
Fig. 7 is driving magnetic-holding electric magnet structure embodiment 1.It has A type organization plan shown in Figure 1.Wherein, element (1), (2), (3), (4), (5), (6), (7), (8), (9), (51), (54), (59) are identical with the same number elements of Fig. 1, but for this magnetic-holding electric magnet with by operating mechanism---an air valve is connected under the prerequisite that does not change former designing technique feature mutually, with upper magnet yoke (1) extend upward increased by one have internal thread, the garden cylindrical sleeve, push rod (51) then still stretches out the datum level outside at upper magnet yoke (1), keeps pressing touching with the valve core thimble of air valve cooperating (air valve was not was not partly marked and drawed on figure).Permanent magnet [3] is-individual annular permanent-magnet steel that the guard ring (20) that nonmagnetic substance of its outside suit is made plays the Anti-bumping protection effect in the present embodiment.Case (21) is fastened on lower yoke (5) with screw and goes up (screw omits and do not paint among the figure), and all electronic components are installed on the circuit board (22).As seen from Figure 7, this electromagnet is sitting at the sticking state, and its main working gas gap δ is spacing with the flange stop of lower yoke (5) by moving (8) unshakable in one's determination.
Figure 12 is and the supporting working control circuit that fits together of magnetic-holding electric magnet shown in Figure 7, it belongs to the control circuit theory diagram 1 shown in Fig. 5, its field power supply is directly taken from storage battery, so AC power shown in Figure 5 (100), rectification circuit (101) can be given cancellation.Form by a capacitor and a resistor in series because of accumulator (107) again, reclosing pulse switch (109) adopts a transistor and a base resistance to form, it is very little that signal is opened in the triggering that requires, for the purpose of simplifying circuit, closing pulse circuits for triggering (106) shown in Figure 5 can give cancellation, and its function is substituted by accumulator (107).Sample resistance device is attempted by on the inlet wire side main circuit of dc excitation power forms described supply voltage sample trigger device (102), it is again the base resistance of gate-dividing pulse switch (103) simultaneously, so list two frame of broken lines in interior (this principle is applicable to other embodiments of the invention) in Figure 12.During energized, two triodes of gate-dividing pulse switch (103) instead end partially, on the series connection contact of the described capacitor of accumulator (107) and resistor, obtain the pulse signal (differential signal or coupled signal) of a positive transition at the negative pole of dc excitation power, reclosing pulse switch (109) is saturation conduction immediately, flows through a forward exciting current I in the solenoid (6)
H, its direction is K+ → G-, magnetic-holding electric magnet therefore adhesive is controlled oneself.Along with being full of very soon of the energy storage capacitor of accumulator (107), the current potential of described series connection contact is reduced to null value automatically, and reclosing pulse switch (109) is because of losing base current disjunction automatically.At the high all the time K point of current potential of the contact of series connection described in the above whole adhesive manipulation process, so, the gate-dividing crosslinking lock switch of forming by a crystal diode (110) when the forward excitation because of anti-inclined to one side can't conducting.When cutting off the electricity supply, two transistor saturation conductions of gate-dividing crosslinking lock switch (103), gate-dividing crosslinking lock switch (103) auto-closing, by accumulator (107) described capacitor anode plate-(103)-(104)-(6)--the anti-discharge loop that the described capacitor anode plate in (110)-(107) constitutes is switched on, oppositely exciting current I
FThe electromagnetism magnetic line of force that produces and the permanent-magnet line in the work magnetic circuit be stack and F oppositely
F＞0 value, magnetic-holding electric magnet therefore discharges, until till the depleted of energy that the described capacitor of accumulator stores up, gate-dividing pulse switch (103) automatically shuts down when low level.It is worthy of note: the introducing of shunting check diode (108) makes I
FReduced one by the unnecessary diverter branch of the described resistors in series of accumulator (107) to described capacitor anode plate.But, if the resistance of the described resistors in series of described accumulator (107) is enough big than the impedance of solenoid (6), when above-mentioned shunting action allowed to ignore to the influence that normal release caused of magnetic-holding electric magnet, shunting check diode (108) can give cancellation (short circuit).
Fig. 8 shows control circuit for magnetically held electromagnet embodiment 1.It belongs to control circuit theory diagram 1 shown in Figure 5.Different with Figure 12 is: present embodiment has independently closing pulse circuits for triggering (106), and it is made up of a resistor and capacitors in series thereby is a complete typical unit control circuit.
Fig. 9 shows control circuit for magnetically held electromagnet embodiment 2.It belongs to control circuit for magnetically held electromagnet theory diagram 1 shown in Figure 5.Different with aforementioned circuit is: the accumulator of Fig. 9 (107) only is made up of a capacitor, and gate-dividing crosslinking lock switch (110) then changes by a diode, a resistor and a transistor switch to be formed.Described transistor base stage negative bias when control circuit is connected DC power supply, gate-dividing crosslinking lock switch (110) is in the disjunction state; When the control circuit dead electricity, reverse exciting current I
FFor described transistor provides enough positive bias base current, gate-dividing crosslinking lock switch (110) conducting, magnetic-holding electric magnet therefore discharges, until on the described capacitor plate of described accumulator energy stored when dropping to low level gate-dividing pulse switch switch (103) and separating brake interlock and open (110) and will automatically shut down respectively.
Figure 10 shows control circuit for magnetically held electromagnet embodiment 3.It belongs to control circuit theory diagram 1 shown in Figure 5.Different with aforementioned circuit is: it adopts ac power supply.Four crystal diodes are formed rectification circuit (101), on the rectifier bridge diagonal and be connected to a filtering capacitor, a crystal diode, a resistor and a light-emitting diode, a capacitor in parallel with light-emitting diode is formed the supply voltage sample trigger device (102) that is installed in AC side, a phototriode, a resistor, one becomes gate-dividing pulse switch (103) with the capacitor of phototriode parallel connection with a thyristor groups, and other is as current limiting element (104), accumulator (107), reclosing pulse switch (109), gate-dividing crosslinking lock switch (110), the composition of solenoid (6) be connected with Figure 12 identical.Light-emitting diode conducting during energized, (preventing the LED flash misoperation when the alternating current zero passage) phototriode thereby saturation conduction with light-emitting diode and the capacitor that connects, thyristor ends, dc pulse electricity after the rectification also triggers reclosing pulse switch (109) conducting simultaneously to the described capacitor charging of accumulator (107), solenoid (6) forward excitation, magnetic-holding electric magnet adhesive operation.During the AC power dead electricity, Light-Emitting Diode extinguishes, phototriode ends thereupon, the thyristor conducting that is triggered, the described capacitor that has stored the accumulator (107) of energy in advance forms reverse energized circuit through another pole plate of (104)-(103)-(6)-(110)-described energy storage capacitor, and magnetic-holding electric magnet therefore discharges.This shows that different with aforementioned circuit is: under this specified conditions, two crystal diodes of rectification circuit (101) have replaced the non-return diode of the energy storage of stipulating among Fig. 5 (105).
Figure 11 and Fig. 8 are similar substantially, difference is: gate-dividing pulse switch (103) only is made up of a transistor, the resistance of the described resistors in series of accumulator (107) is big more than the impedance of solenoid (6), so the reverse excitation shunting action that is caused by this resistor allows to ignore, described shunting check diode (108) can give cancellation (short circuit) in this case.
Figure 13 shows control circuit for magnetically held electromagnet embodiment 6.It belongs to control circuit theory diagram 2 shown in Figure 6.Rectification circuit (101 ') is made up of four crystal diodes and a filter capacitor, reclosing pulse switch (109 ') is made up of a base resistor and a transistor (as Darlington transistor) or V-MOS field effect transistor, closing pulse circuits for triggering (106 ') are made up of two voltage grading resistors and an integrating condenser, a transistor and a base resistor of being attempted by on the dc excitation power, and the collector resistance of described triode is held a concurrent post by the base resistance of described reclosing pulse switch (109 ').Accumulator (107 ') only is made up of a capacitor, and its positive plate links to each other with the collector electrode of the described transistor of reclosing pulse switch (109) (G point), is connected and negative plate and the emitter of above-mentioned transistor are the negative pole of dc excitation power side.Gate-dividing pulse switch (103 ') is made up of the transistor of a base resistance, a collector resistance and two cascades.Current limiting element (104 ') is made up of a PTC thermistor, and it is serially connected in the collector loop of gate-dividing pulse switch (103 ') final stage triode.Supply voltage sampler (102 ') is held a concurrent post by a base resistance of gate-dividing pulse switch (103 ') prime triode.The non-return diode of energy storage (105 ') is serially connected in the main circuit of current limiting element (104 ') and gate-dividing pulse switch (103 ') series loop inlet wire side.Solenoid (6 ') is the collector load of reclosing pulse switch (109 ') triode, and as seen from Figure 13, annexation between above-listed each element and the control circuit theory diagram 2 shown in Fig. 6 are in full accord.Connect the instantaneous of AC power (100 '), because the voltage at the described capacitor plate of accumulator (107 ') two ends can not suddenly change, the G point by this electric capacity clamp down on to direct current " " current potential, the base stage of gate-dividing pulse switch (103 ') final stage triode is through the collector resistance ground connection of its prime triode, and described gate-dividing pulse switch (103 ') begins promptly to be in the disjunction state in the magnetic-holding electric magnet adhesive.The sample resistance device of supply voltage sample trigger device (102 ') is that the prime triode of gate-dividing pulse switch (103 ') provides a base stage forward current, described triode saturation conduction, its collector electrode is clamped down on earth potential with the base stage of final stage triode again, and gate-dividing pulse switch (103 ') is in cut-off state eventually.Meanwhile, owing to be connected in parallel on bleeder circuit and the R-C integrator delay-time circuit formed by two resistors on the dc excitation power both positive and negative polarity, as long as to selecting proper with integrating capacitor parallel resistor device, current potential on the integrating capacitor positive plate increases gradually with the integration charge constant, thereby the triode of pulsed triggering circuit (106 ') ends, its collector resistance is that reclosing pulse switch (109 ') provides a base stage forward current, the transistor wink that makes (109 ') is a saturation conduction, solenoid (6 ') forward excitation, the sense of current such as I
HShown in the arrow, electromagnet begins to enter the adhesive operating state, through one section time delay Δ T
HAfter, the sticking moving unshakable in one's determination of electromagnet puts in place, current potential on the integrating capacitor positive plate rises to when enough high, the triode of separating brake pulsed triggering circuit (106 ') is saturation conduction thereupon, the base stage of reclosing pulse switch (109 ') triode is clamped down on direct current ground, reclosing pulse switch (109 ') disjunction automatically, the forward excitation process of magnetic-holding electric magnet stops automatically, and moving (8) unshakable in one's determination rely on the permanent magnetism polarization force to continue to remain on attracting state.At this moment the described capacitor of accumulator (107 ') has been full of electric charge, through this-extremely small the giving of capacitive leakage current that capacitor flows through solenoid (6 ') ignore, but because gate-dividing pulse switch (103 ') prime triode is in the saturation conduction state all the time behind the making current power supply, because of the relation of its collector resistance, in solenoid (6 '), will flow through a small electric current I for a long time
L, its direction and I
FIdentical, because of the resistance of described collector resistance general all about hundreds of kilo-ohms and even number megaohm, so I
LCurrent value only reach several milliamperes even several microamperes, can not influence the power savings of magnetic-holding electric magnet.Operating magnetic-holding electric magnet is when AC power cycle zero passage or power supply grid lightning arrester instant earthing, and rectification circuit filtering capacitor energy stored makes that the prime triode of gate-dividing pulse switch (103 ') is unlikely to withdraw from the saturation region and misoperation.When cutting off AC power (100 '), behind the time delay Δ T that the described filtering capacitor of process causes (tens of approximately millisecond), the prime triode of gate-dividing pulse switch (103 ') changes cut-off state over to, cause its final stage triode saturation conduction, but the triode of closing pulse circuits for triggering (106 ') and reclosing pulse switch (109 ') all keeps original operating state constant, because the non-return effect of non-return diode (105 '), the energy that accumulator (107 ') stores up will return (107 ') by element (6 ')-(104 ')-(103 ') and constitute path, magnetic-holding electric magnet is reversed excitation, its sense of current such as I
FShown in the arrow, at this moment, as long as resistive component (the D.C. resistance R of current limiting element (104 ') and solenoid (6 ') of above-mentioned anti-discharge loop
o) enough big, through a time delay Δ T
FAfter, moving [8] unshakable in one's determination discharge at back-moving spring (9) and under by the reaction force of operating mechanism, and magnetic-holding electric magnet is returned to the initial condition when having a power failure.In above-mentioned anti-discharge process, the energy that accumulator (107 ') stores up is decayed along with the growth of discharge time, gate-dividing pulse switch (103 ') will automatically shut down when reaching a certain low level, the energy that stores up on closing pulse circuits for triggering (106 ') integrating condenser also by with its parallel resistor device very fast release clean, at this moment, the whole anti-discharge process of control circuit is all over.
In sum, 6 control circuit embodiment till Fig. 8 to Figure 13, accumulator is formed by a capacitor or by this capacitor and a resistors in series basically.
But in actual applications, store up energy and operating voltage, caloric value when reducing magnetic-holding electric magnet release work and Δ T for what reduce the described capacitor of accumulator artificially sometimes
FValue, often this capacitor and a supporting bleeder circuit (111) are composed in series a new accumulator (107), at this moment, bleeder circuit both can be general resitstance voltage divider, it also can be the bleeder circuit that a voltage stabilizing didoe and bias resistor are formed, the similar bleeder circuit that can also adopt voltage stabilizing triode (containing multiterminal IC voltage stabilizing circuit sheet) to constitute is marked and drawed no longer in icon way because of its circuit is very simple.For the same reason; in 6 control circuit embodiment of Fig. 8 to Figure 13; all kinds of protection components of relevant protection back-emf, surge voltage overcurrent absorb circuit, varistor etc. such as fly-wheel diode, RC and all no longer mark and draw in principle and set forth.
Fact proved that the present invention has following major advantage:
1, highly reliable operating characteristic, depending primarily on magnetic-holding electric magnet does not have continuous mechanical vibration source and pyrotoxin, its when the sticking state Operating characteristic is irrelevant with the voltage pulsation amplitude before dead electricity or under-voltage protection, can be in 65% to 125% scope of rated voltage reliable worker Do.
2, efficient electricity-saving characteristic is compared with existing like product (non-magnetic freeze mode), and the power saving rate average out to is more than 98%～99%.
3, has manual-operating mechanism manual operation electromagnetic actuation and release, simple and practical.
4, can provide very big initial start electromagnetic attraction.
5, both can make traction (pulling) formula electromagnet, also can be made into push electric magnet.
6, adopt common straightcarbon steel to replace traditional silicon steel sheet and electrical pure iron, but remanent magnetism accumulation and hysteresis do not take place, dwindled electromagnetism The volume of iron has alleviated weight, has simplified production technology.
7, Electromechanical Design, supporting dedicated control circuit is very simple, and is can thick film integrated.
8, market is very wide, and using method is identical with traditional similar electric product, so be easy to apply.
9, have great economic results in society.
It is to be noted at last and in implementing process of the present invention, can also make various modifications and variations at above-described structure and control circuit, for example only implement version of the present invention and two solenoids independent of each other of respectively taking charge of ＂ adhesive ＂ and ＂ disjunction ＂ function be set in addition to replace same solenoid (6) or the like, but revise howsoever, change, make up, they can't surmount the claim of the present invention's regulation and the basic categories that specification is set forth.
Claims (9)
1, magnetic-holding electric magnet, comprise upper magnet yoke (1), fixing magnetic core (2), permanent magnet (3), side magnetic yoke (4), lower yoke (5), solenoid (6), bobbin (7), moving (8) and back-moving spring (9) unshakable in one's determination, the polarity on two planes up and down of permanent magnet (3) that is installed in the central axial line both sides is opposite each other, central part in lower yoke (5) is provided with the guide rail bearing that moving (8) unshakable in one's determination insertion is slided, central axis with fixing magnetic core (2) and moving (8) unshakable in one's determination is a symmetry axis, be formed on geometry, the installation site, structural behaviour, the symmetrical work magnetic circuit in magnetic property aspect, wherein permanent magnetic circuit is closed symmetrical magnetic circuits when electromagnetic actuation, the main flux of the permanent-magnet line and the electromagnetism magnetic line of force passes the main working gas gap of moving (8) unshakable in one's determination in the described magnetic circuit, the fixed core that it is characterized in that described electromagnet be upper magnet yoke (1) and fixedly the central axis place of magnetic core (2) through hole (50) is set, insert push rod (51) in the described hole, at the other end central axis place manual lever (54) is set away from the moving iron core (8) of through hole (50), the outer surface of the outside end face of described moving iron core (8) or close described guide rail bearing medial flange one end is provided with the confined planes of moving (8) movement travel unshakable in one's determination of control, constitutes a kind of driving magnetic-holding electric magnet with manual operation function thus.
2, magnetic-holding electric magnet, comprise upper magnet yoke (1), fixing magnetic core (2), permanent magnet (3), side magnetic yoke (4), lower yoke (5), solenoid (6), bobbin (7), moving (8) and back-moving spring (9) unshakable in one's determination, the polarity on two planes up and down of permanent magnet (3) that is installed in the central axial line both sides is opposite each other, central part in lower yoke (5) is provided with the guide rail bearing that moving (8) unshakable in one's determination insertion is slided, central axis with fixing magnetic core (2) and moving (8) unshakable in one's determination is a symmetry axis, be formed on geometry, the installation site, structural behaviour, the symmetrical work magnetic circuit in magnetic property aspect, wherein permanent magnetic circuit is closed symmetrical magnetic circuits when electromagnetic actuation, the main flux of the permanent-magnet line and the electromagnetism magnetic line of force passes the main working gas gap of moving (8) unshakable in one's determination in the described magnetic circuit, the fixed core that it is characterized in that described electromagnet be upper magnet yoke (1) and fixedly the central axis place of magnetic core (2) through hole (50) is set, insert or screw in manual lever (52) in the described hole, at the other end central axis place draw bar (53) is set away from the moving iron core (8) of through hole (50), the outer surface of the outside end face of described moving iron core (8) or close described guide rail bearing medial flange one end is provided with the confined planes of moving (8) movement travel unshakable in one's determination of control, constitutes a kind of towed magnetic-holding electric magnet with manual operation function thus.
3, the magnetic-holding electric magnet of stipulating by claim 2, when it is characterized in that described through hole (50) is a screw, manual lever (5 2) is a bolt special that matches with it, the one end has radial flange, described flange imbeds in the central aperture (55) of a sealing moving (8) unshakable in one's determination, and its other end stretches out in the outer space of through hole (50) and is provided with the described screw rod of manual operation makes the nut (57) of axial motion or groove, flange, handgrip and the operating surface with similar functions.
4,, it is characterized in that being provided with an axial central aperture (55) and clamp (56) near the central axis place of an end of the moving iron core (8) of described through hole (50) by the magnetic-holding electric magnets of claim 2,3 regulations.
5, be used for the control circuit of claim 1 or 2 described magnetic-holding electric magnets, it is characterized in that:
A) by a reclosing pulse switch (109 '), closing pulse circuits for triggering (106 '), accumulator (107 '), the non-return diode of energy storage (105 '), gate-dividing pulse switch (103 '), current limiting element (104 '), supply voltage sample trigger device (102 ') has constituted to be connected or is using during the disjunction field power supply same solenoid (6 ') described magnetic-holding electric magnet adhesive of operation or release and discharging the control circuit of described magnetic-holding electric magnet during as no-voltage or under voltage automatically at field power supply;
B) described reclosing pulse switch (109 ') is the electronic switch of a transistor in described magnetic-holding electric magnet adhesive automatic conducting of moment and automatic disjunction after adhesive is finished, thyristor, field effect tubing, and it must be serially connected in the main circuit of described solenoid (6 ');
C) described closing pulse circuits for triggering (106 ') are single stabilization delay circuits, when connecting the field power supply of described control circuit described closing pulse circuits for triggering (106 ') trigger described reclosing pulse switch (109 ') conducting approximate number millisecond to the several seconds automatically with its disjunction;
D) described accumulator (107 ') is a capacitor, and it must be connected in parallel with described reclosing pulse switch (109 ');
E) the non-return diode of described energy storage (105 ') must be connected in the main circuit of the dc excitation power between described supply voltage sample trigger device (102 ') and described gate-dividing pulse switch (103 '), the current limiting element (104 ');
F) described gate-dividing pulse switch (103 ') be in described magnetic-holding electric magnet attracting process, be in interlocking disjunction state and in dispose procedure automatically a transistor of conducting, thyristor, field effect tubing constitute electronic switch, it with the main circuit of the described dc excitation power that is connected in the non-return diode of described energy storage (105 ') rear side after a described current limiting element (104 ') that is made of resistor or electronic pressure-regulating component or PCT thermistor is connected again in parallel on;
G) described supply voltage sampler (102 ') is the electronic switch that a resistor or photoelectric cell class constitute, it is connected in parallel on the main circuit of input of described dc excitation power of described control circuit, triggers described gate-dividing pulse switch (103 ') conducting to described dc excitation power sampling and when this power supply dead electricity.
6, be used for the control circuit of claim 1 or 2 described magnetic-holding electric magnets, it is characterized in that:
A) by a reclosing pulse switch (109), closing pulse circuits for triggering (106), accumulator (107), the non-return diode of energy storage (105), gate-dividing pulse switch (103), current limiting element (104), shunting check diode (108), gate-dividing crosslinking lock switch (110), supply voltage sample trigger device (102) has constituted to be connected or is using during the disjunction field power supply same solenoid (6) described magnetic-holding electric magnet adhesive of operation or release and discharging the control circuit of described magnetic-holding electric magnet during as no-voltage or under voltage automatically at field power supply;
B) described reclosing pulse switch (109) is the electronic switch of a transistor in described magnetic-holding electric magnet adhesive automatic conducting of moment and automatic disjunction after adhesive is finished, thyristor, field effect tubing, and it must be serially connected in the negative or positive electrode main circuit of described solenoid (6);
C) described closing pulse circuits for triggering (106) are made up of a capacitor and a resistors in series, the other end of described capacitor is connected with the dc excitation power of described control circuit, when connecting the field power supply of described control circuit described closing pulse circuits for triggering (106) trigger described reclosing pulse switch (109) conducting approximate number millisecond to the several seconds automatically with its disjunction;
D) described accumulator (107) is made up of a capacitor and a resistors in series, a non-return diode of energy storage (105) or a shunting check diode (108) are serially connected among the foregoing circuit, then whole series circuit are connected in parallel on the main circuit of described dc excitation power of described reclosing pulse switch (109) and described solenoid (6) inlet wire side;
E) the non-return diode of described energy storage (105) must be connected in the negative or positive electrode main circuit of dc excitation power of described accumulator (107) and described gate-dividing pulse switch (103) and described current limiting element (104) front side, but also can be serially connected among the series circuit of described accumulator (107);
F) described shunting check diode (108) is connected among the described accumulator (107), and its negative electrode is connected with the negative pole of described dc excitation power main circuit;
G) described gate-dividing pulse switch (103) be in described magnetic-holding electric magnet attracting process, be in interlocking disjunction state and in dispose procedure the automatically electronic switch or the light-operated switch of a transistor of conducting, thyristor, field effect tubing, it with the main circuit of the described dc excitation power that is connected in the non-return diode of described energy storage (105) rear side after a described current limiting element (104) that is made of resistor or electronic pressure-regulating component or PCT thermistor is connected again in parallel on;
H) described gate-dividing crosslinking lock switch (110) be in described magnetic-holding electric magnet attracting process, be in interlocking disjunction state and in dispose procedure the automatic electronic switch that constitutes of a crystal diode of conducting, thyristor, voltage switch diode, transistor, the one end is connected with the series connection contact of described reclosing pulse switch (109) with described solenoid (6), and of described capacitor that its other end must be connected to described accumulator (107) can constitute on the pole plate in the reverse field discharge of described control circuit loop;
I) described supply voltage sampler (102) is the electronic switch that a resistor or photoelectricity class component constitute, it is connected in parallel on the main circuit of input of described dc excitation power of described control circuit, triggers described gate-dividing pulse switch (103) conducting to described dc excitation power sampling and when this power supply dead electricity or the under voltage.
7, press the control circuit of the magnetic-holding electric magnet of claim 6 regulation, the resistance value of described resistors in series that it is characterized in that described accumulator (107) is during much larger than the resistance value of described solenoid (6), can be ignored by the shunting action to the reverse exciting current of described magnetic-holding electric magnet that described resistors in series causes, described shunting check diode (108) can give cancellation.
8, press the control circuit of the magnetic-holding electric magnet of claim 6 regulation, it is characterized in that the described series capacitor of described accumulator (107) and described series capacitor and the described resistor that described resistor can replace described closing pulse circuits for triggering (106).
9, press the control circuit of the magnetic-holding electric magnet of claim 6 regulation; when it is characterized in that described gate-dividing crosslinking lock switch (110) is a transistor, also be connected in series a protection diode D11 who prevents that described triode emitter inverse from puncturing between the base stage of described triode and the excitation dc power negative pole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN91108305A CN1043276C (en) | 1991-09-11 | 1991-09-11 | Magnetically held-on type electromagnet and control circuit thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN91108305A CN1043276C (en) | 1991-09-11 | 1991-09-11 | Magnetically held-on type electromagnet and control circuit thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1070510A CN1070510A (en) | 1993-03-31 |
| CN1043276C true CN1043276C (en) | 1999-05-05 |
Family
ID=4909206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN91108305A Expired - Fee Related CN1043276C (en) | 1991-09-11 | 1991-09-11 | Magnetically held-on type electromagnet and control circuit thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1043276C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115325250A (en) * | 2022-08-23 | 2022-11-11 | 广州康盛生物科技股份有限公司 | Solenoid valve drive circuit and solenoid valve drive system |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101800470B (en) * | 2010-02-02 | 2012-06-27 | 天津大学 | Main circuit for realizing quick pick-up and release of electromagnet |
| CN102235452A (en) * | 2011-06-21 | 2011-11-09 | 成都瑞迪机械实业有限公司 | Permanent magnet powerless magnetic brake |
| CN104858524B (en) * | 2013-10-23 | 2016-08-17 | 南安市天鸿电子科技有限公司 | A kind of electromagnetism heat-conducting block |
| DE102014206360B4 (en) * | 2014-04-03 | 2022-09-08 | Siemens Aktiengesellschaft | Procedure for testing a self-retaining magnet of a switch and test device for the self-retaining magnet |
| CN104633235B (en) * | 2015-03-01 | 2017-09-12 | 宁波市镇海华泰电器厂 | Electricity-saving type alternating current electromagnetic valve |
| DE102016220686A1 (en) * | 2016-10-21 | 2018-04-26 | Robert Bosch Gmbh | Method and circuit arrangement for determining a position of a movable armature of an electromagnetic actuator |
| CN106783009B (en) * | 2016-12-27 | 2018-05-04 | 宁波市镇海华泰电器厂 | Using the alternating electromagnet of accumulator |
| CN109390180B (en) * | 2018-10-25 | 2020-06-02 | 大力电工襄阳股份有限公司 | Vacuum contactor |
| CN111312468B (en) * | 2019-12-14 | 2021-08-31 | 哈尔滨工业大学 | Capacitive energy storage driving method of high-frequency switch type electromagnet |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1050463A (en) * | 1989-09-05 | 1991-04-03 | 张凡 | Magnetic holding type tractive electromagnet and control circuit thereof |
-
1991
- 1991-09-11 CN CN91108305A patent/CN1043276C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1050463A (en) * | 1989-09-05 | 1991-04-03 | 张凡 | Magnetic holding type tractive electromagnet and control circuit thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115325250A (en) * | 2022-08-23 | 2022-11-11 | 广州康盛生物科技股份有限公司 | Solenoid valve drive circuit and solenoid valve drive system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1070510A (en) | 1993-03-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1043276C (en) | Magnetically held-on type electromagnet and control circuit thereof | |
| EA026040B1 (en) | Method and apparatus for controlling circuit breaker operation | |
| CN2087376U (en) | Magnetic maintaining type electric magnet and controlled circuit | |
| CN1028575C (en) | Magnetic holding type tractive electromagnet and control circuit thereof | |
| CN1043698C (en) | Magnetically held-on electromagnet | |
| CN100365922C (en) | Micro power consumption reciprocating apparatus | |
| CN101425403B (en) | Pulse excitation circuit | |
| CN108281324B (en) | Contactor coil energy-saving controller | |
| RU2310941C1 (en) | Electromagnetic operating mechanism for high-voltage vacuum circuit breaker | |
| CN101252059A (en) | Bistable state permanent magnetism alternating current contactor with rapid charging and discharging control characteristics | |
| CN2886785Y (en) | Permanent magnet opening/closing device | |
| CN2430766Y (en) | Quick electromagnetic driver with arc extinction protection | |
| CN1564290A (en) | Permanent-magnet double steady-state contactor | |
| CN2634638Y (en) | Self holding relay and contactor electromagnetic device | |
| CN1086043A (en) | Mixed type electromagnet | |
| DE3232217A1 (en) | Circuit arrangement for deenergising magnetic coils which are energised by direct current | |
| CN1233009C (en) | Controller for electromagnetic system of universal contactor | |
| DE1218312B (en) | Signaling device for indicating iron parts that are caught by an electromagnet | |
| US2835831A (en) | Electromagnetic power device | |
| CN216353938U (en) | Vacuum contactor of submerged arc furnace | |
| CN1069141A (en) | Powerful soundless energy-saving electromagnet | |
| CN201171022Y (en) | Exterior-adjustable type permanent magnet type AC contactor capable of current failure delaying to release | |
| CN106504851B (en) | It is pressurized the alternating electromagnet of starting | |
| CN201178072Y (en) | Bistable permanent magnet AC contactor | |
| SU1198731A1 (en) | Control device for two-winding electromagnetic motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| OR01 | Other related matters | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |