CN104867785B - Permanent magnetism type contactor with disjunction protection device - Google Patents

Permanent magnetism type contactor with disjunction protection device Download PDF

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Publication number
CN104867785B
CN104867785B CN201510237699.8A CN201510237699A CN104867785B CN 104867785 B CN104867785 B CN 104867785B CN 201510237699 A CN201510237699 A CN 201510237699A CN 104867785 B CN104867785 B CN 104867785B
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disjunction
circuit
voltage
signal
lock
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CN104867785A (en
Inventor
舒亮
吴浪
许成文
吴桂初
章上聪
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Wenzhou University
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Wenzhou University
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/56—Contact spring sets
    • H01H50/58—Driving arrangements structurally associated therewith; Mounting of driving arrangements on armature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/546—Contact arrangements for contactors having bridging contacts

Abstract

The present invention relates to a kind of permanent magnetism type contactor with disjunction protection device, forcible tripping device is additionally provided with casing, forcible tripping device include can deformation energy storage pressure disjunction spring, force disjunction spring to have a deformation and drive release end, this deformation drives release end to be connected with when forcing disjunction spring to release energy and can drive the dynamic of "on" position, static contact is detached to force disjunction jump cap, disjunction jump cap corresponding matching is forced to have the latching device for locking and release pressure disjunction spring, latching device has can be with pressure disjunction jump cap snap fit to realize forcing disjunction spring latch at the lock end of energy storage state, and drive lock end and force the dropout of disjunction jump cap to discharge the triggering end forcing disjunction spring, the triggering end of latching device connects triggering device.The present invention has under malfunction, can force disjunction, realize failure protection function, have a safety feature, and in the case of power-off, manual disjunction is simple and convenient, has the advantages that to install, debugs and convenient test.

Description

Permanent magnetism type contactor with disjunction protection device
Technical field
The present invention relates to catalyst is and in particular to permanent magnetism type contactor, the particularly catalyst with disjunction protection device.
Background technology
?ElectrotechnicsOn, because can fast shut-off exchange and direct current major loop and being frequently switched on and high current control （Certain model is up to 800 amperes）The device of circuit, soOftenApply to motor also to be used as controlling as control object The electrical load such as shop equipment electric heater machine-tool and various kinds electric power unit, catalyst can not only be switched on and off circuit, But also there is the effect of low-voltage release guard.Catalyst is divided into by operating mechanism：Electromagnetic treadle, permanent magnetism type contactor.
Permanent magnetism type contactor includes catalyst body and control circuit, and catalyst body includes casing, magneto operation dress Put and contact apparatus, contact apparatus include the moving contact cooperating and static contact, moving contact is arranged on moving contact frame, forever Magnetic-type operation device includes dynamic iron core, permanent magnetism coil mechanism and reaction spring, and dynamic iron core is connected with moving contact installing rack Realize controlling dynamic and static contact closure and disconnection, dynamic iron core is coordinated with permanent magnetism coil mechanism, permanent magnetism coil mechanism include bobbin, Divide-shut brake magnet exciting coil, yoke and permanent magnet, divide-shut brake magnet exciting coil is wound on bobbin, and permanent magnet and bobbin are arranged on In yoke, reaction spring, during dynamic and static contact closure, is forced to complete energy storage, is used to help dynamic and static contact and separates（Exist Energy storage during combined floodgate, provides power in separating brake）.The polarity of the permanent magnet because being arranged in catalyst yoke is changeless, And the divide-shut brake magnet exciting coil being fixed within yoke controls generation magnetic field by control circuit, this magnetic field is in adhesive stage and permanent magnetism Body magnetic direction is identical to make dynamic iron core move downward, so that dynamic and static contact adhesive, completes making process；The sticking stage leads to Cross permanent magnet to be kept closed, reach combined floodgate and keep；The disjunction stage makes dynamic iron core from adhesive with magnetic field of permanent magnet is in opposite direction Moving upwards in position, so that dynamic and static contact separates, completes separating brake process, now reaction spring also provides for separating brake power；From And make the main contact of catalyst reach the purpose of adhesive, sticking and disjunction.
Wherein, control circuit includes power supply, single-chip microcomputer, accumulator, magnet exciting coil forward direction ON-OFF control circuit and Magnet exciting coil reverser control circuit, divide-shut brake magnet exciting coil forward conduction results from permanent magnet, and realize closing a floodgate in magnetic field in the same direction, Divide-shut brake magnet exciting coil reverse-conducting results from permanent magnet opposing magnetic field and realizes separating brake；Power supply is to single-chip microcomputer, magnet exciting coil Positive ON-OFF control circuit and accumulator are powered, and single-chip microcomputer is used for controlling magnet exciting coil forward direction ON-OFF control circuit and encourages The break-make of magnetic coil reverser control circuit；Unidirectional current is exported after power supply rectified bridge rectification and capacitor filtering process, The unidirectional current of output connects bleeder circuit again, and the dividing point of bleeder circuit is to divide/switching voltage signal detection end, and single-chip microcomputer takes this Point/voltage signal at switching voltage signal detection end is as controlling magnet exciting coil forward direction ON-OFF control circuit break-make and magnet exciting coil The control signal of reverser control circuit break-make, power supply starts, and single-chip microcomputer detects point/switching voltage signal detection end The high level of output, the forward direction ON-OFF control circuit conducting of Single-chip Controlling magnet exciting coil, magnet exciting coil forward conduction is realized closing a floodgate Control；Power supply is closed, point/voltage at switching voltage signal detection end is reduced to rapidly 0, single-chip microcomputer detects point/closes a floodgate electric The voltage at pressure signal detection end declines, and Single-chip Controlling magnet exciting coil reverser control circuit turns on, and magnet exciting coil is reversely led Lead to and realize separating brake control；Accumulator charges when power supply starts, when power supply is closed, to single-chip microcomputer and divide-shut brake Magnet exciting coil is powered.
The institute to realize electromagnetic treadle using the electronically controlled mode of permanent magnetism sticking is functional, and structure is simple, zero Few, a few noiselessness of part, little and energy-saving effect is notable by grid voltage fluctuation influence.But there is certain defect in permanent magnet contactor： On the one hand, when the controllable devices (metal-oxide-semiconductor etc.) in control module or coil break down, or permanent magnet contactor is in dead electricity shape During state, catalyst cannot normally disjunction, the ability out of hand to main current supply circuit, the peace to commercial production or even whole power distribution network Entirely bring great potential safety hazard.On the other hand, in the event of a power failure, permanent magnet keeps tight closure, is difficult to manually make forever Magnetic contactor separately just can make contact separately it is necessary to switch on power, so in installation, debugging and the test of permanent magnet contactor During all extremely inconvenience.
Content of the invention
For solving the deficiency that prior art exists, it is an object of the invention to provide a kind of permanent magnetism with disjunction protection device Formula catalyst, under malfunction, can force disjunction, realize failure protection function, have a safety feature, and in the case of power-off, handss Dynamic disjunction is simple and convenient, has the advantages that to install, debugs and convenient test.
For achieving the above object, the invention provides following technical scheme：A kind of magneto with disjunction protection device connects Tentaculum, including catalyst body and control circuit, catalyst body includes casing, permanent magnet operating device and contact dress Put, contact apparatus include moving contact and the static contact of corresponding matching, permanent magnet operating device includes controlling dynamic and static Contact Breaking/Making Operations Dynamic iron core, the permanent magnetism coil mechanism with dynamic iron core corresponding matching, and drive the detached reaction spring of dynamic and static contact, permanent magnetism line Loop mechanism include bobbin, divide-shut brake magnet exciting coil, yoke and permanent magnet it is characterised in that：Also set in described casing Have forcible tripping device, forcible tripping device include can deformation energy storage pressure disjunction spring, force disjunction spring there is a change Shape drives release end, and this deformation drives release end to be connected with and can drive "on" position when forcing disjunction spring to release energy Dynamic and static contact is detached to force disjunction jump cap, forces disjunction jump cap corresponding matching to have and forces disjunction spring for locking and release Latching device, latching device have can with force disjunction jump cap snap fit with realize force disjunction spring latch in energy storage shape The lock end of state, and drive lock end and force the dropout of disjunction jump cap to discharge the triggering end forcing disjunction spring, locking machine The triggering end of structure connects triggering device.
The permanent magnetism type contactor of the present invention, installs forcible tripping device additional, disjunction spring will be forced to carry out energy storage in advance, and leads to Crossing latching device will force disjunction jump cap to latch, and realization will force disjunction spring latch in energy storage state, once occurring controlling mould Controllable devices (metal-oxide-semiconductor etc.) in block or divide-shut brake magnet exciting coil break down, or when permanent magnet contactor is in power failure state, The dynamic and static contact of catalyst cannot normal disjunction situation, then can trigger the triggering end of latching device so that the lock of latching device Threading off with forcing disjunction jump cap in end, thus discharging pressure disjunction spring, forces the deformation of disjunction spring to drive release end to drive strong Disjunction jump cap action processed, forces disjunction jump cap and then drives dynamic and static contact disjunction, completes to force separating brake；Realize error protection work( Energy.And energy storage is carried out using pressure disjunction spring, and coordinated with forcing disjunction jump cap with latching device, to pressure disjunction spring Locking and release control, are not only simple in structure compact, and easy to operate, also can be manually operated and easily catalyst be divided Lock operates, and facilitates installation, debugging and the test of permanent magnet contactor.
The present invention is further arranged to：Described force disjunction spring be compressed energy-storage stage clip, stage clip located at dynamic iron core with Between permanent magnetism coil mechanism, force disjunction jump cap to be connected to and force the deformation of disjunction spring to drive on release end, force disjunction to be jumped Cap is located at below dynamic iron core, and pushing tow dynamic iron core can move to sub-gate position by closing position when forcing disjunction spring to release energy Put, described pressure disjunction spring is fixedly supported in casing with respect to the other end forcing disjunction jump cap to abut one end, forces Disjunction jump cap is provided with and drives the spring energy-storage actuating arm forcing the compression of disjunction jump cap to force disjunction spring energy-storage.
By adopting technique scheme, using stage clip energy storage, and between dynamic iron core and permanent magnetism coil mechanism, structure Compact, mounting arrangements are convenient, and force disjunction jump cap to drive dynamic iron core to carry out forcing separating brake, reliable in action, force disjunction spring Using fixing supporting way, the other end relies on forces the driving of disjunction jump cap to complete energy storage, and structure is simple, easy to operate for one end.
The present invention is further arranged to：Described pressure disjunction jump cap is provided with least two locks being uniformly distributed circumferentially and refers to, Latching device includes referring to the latching device unit of corresponding matching with each lock, and latching device unit includes and is arranged in casing Pedestal, and it is pivoted on snap close piece on pedestal, tripping part, tripping part has trip positions and latched position, tripping part It is provided with and force disjunction jump cap to be linked to drive tripping part to turn to the latch actuation portion of latched position from trip positions, And referring to, with lock, the locking stopper section that locking/dropout coordinates, on the upper swing arm of tripping part, snap close piece is pacified for locking stopper section It is contained in described tripping part rear, snap close piece includes the rotatable closing piece that correspondence is journaled into swing arm position on tripping part, rotatably Closing piece has extended downwardly coupled arm, the rotatable closing piece of described snap close piece be provided with for tripping part in trip positions against de- Button bearing surface, the lock-bit clamp leaning in latched position for tripping part, and drive snap close piece rotate realize tripping part with Lock refers to the dropout trigger arm threaded off, and the upper swing arm of described tripping part is provided with to be in during trip positions for tripping part and supplies lock-bit card The lock-bit window that board enters, is provided with the upside of lock-bit window to be in during trip positions for tripping part and is clasped, locates with lock-bit clamp With lock-bit clamp against the baffle plate coordinating when latched position, in the bottom swing arm of the bottom moved end of described tripping part and snap close piece Between be provided with and drive the upper swing arm of tripping part to be close to the linkage torsion spring of snap close piece, linkage torsion spring is pivoted on pedestal, connection The side torsion spring arm of dynamic torsion spring is connected to the bottom moved end of tripping part, and the opposite side torsion spring arm of linkage torsion spring is connected to snap close piece On coupled arm.
The latching device operation principle of said structure is：Disjunction spring is forced to carry out energy storage forcing the compression of disjunction jump cap When, force disjunction jump cap to drive latch actuation portion on tripping part so that tripping part turns to latched position from trip positions, to force Disjunction jump cap is locked and is referred to and tripping part locking cooperation, is latched in pressure disjunction spring energy-storage state, here by forcing disjunction jump cap During, when rotating, the upper swing arm of tripping part progressively disengages snap close piece to tripping part, then lock-bit on the upper swing arm of tripping part Window gradually disengages lock-bit clamp on snap close piece, simultaneously drives linkage torsion spring, and linkage torsion spring provides the power driving snap close piece to rotate, But because on snap close piece, lock-bit clamp is pinned by lock-bit window on tripping part, linkage torsion spring by energy storage, with the rotation of tripping part, And gradually cross lock-bit clamp and lock-bit window and be clasped critical point, lock-bit clamp disengages lock-bit window, and linkage torsion spring drives Snap close piece rotates, and when tripping part turns to latched position, in the presence of linkage torsion spring, tripping part is close to snap close piece, realizes jumping Fastener is resisted against the lock-bit clamp of snap close piece, thus realizing snap close piece tripping part is locked in latched position.Needing release strong During the energy of disjunction spring processed, drive dropout trigger arm, snap close piece rotates, snap close piece drives linkage torsion spring, due to initial stage tripping Part is resisted against on the lock-bit clamp of snap close piece, and tripping part cannot rotate, and link torque spring energy store, when on snap close piece, lock-bit clamp is again Snap in lock-bit window, under linkage torsion spring drives, tripping part rotates, and is snapped the dropout bearing surface stop limit on part, Tripping part turns to trip positions from latched position, forces disjunction jump cap and tripping part to complete to thread off, forces disjunction spring to be released Put, simultaneously in the presence of linkage torsion spring, on snap close piece, lock-bit clamp is buckled in lock-bit window, and that is, snap close piece is through lock-bit clamp Hold tripping part.This latching device, reasonable in design is ingenious, and compact conformation is active in one's movements, safe and reliable.
The present invention is further arranged to：The back side of described tripping part is extended with pivot joint ear, and the upper swing arm of tripping part sets Lock is had to refer to latch-up window, described latch actuation portion is the latch actuation projection referring to located at lock in latch-up window, latch actuation projection Refer to latch-up window in extending and stretching out described lock towards pressure disjunction jump cap side, described latch actuation projection is jumped with forcing disjunction The lock of cap refer to counter stopper realize tripping part can be driven to turn to latched position from trip positions, described locking stopper section be positioned at Block on the upside of latch-up window.
By adopting technique scheme, push pressure disjunction jump cap to forcing disjunction spring energy-storage, force disjunction jump cap On lock finger pressure to the latch actuation projection on tripping part so that tripping part turns to latched position from trip positions, lock afterwards On snap close piece in buckle mechanism unit, tripping part is locked in latched position by lock-bit clamp, forces disjunction jump cap finger of locking to be blocked Block on the upside of window stops locking, completes to force the energy storage of disjunction spring；It is simple and compact for structure, forces disjunction jump cap and jump Fastener interlocking fit is reliable.
The present invention is further arranged to：Described latch actuation projection is in extend obliquely towards pressure disjunction jump cap side, The downside that described lock refers to is provided with breach, and refers to lower wall formation circular arc guide surface in lock.
By adopting technique scheme, lock refers to coordinate more reliable with latch actuation projection, and lock refers to driving tripping part and turns Dynamic more reliable.
The present invention is further arranged to：Described lock refers to upper side and is provided with the inclined-plane extending to lock finger tip, and this inclined-plane is certainly Extend to lock finger tip away from lock finger tip one end obliquely.
By adopting technique scheme, facilitate lock to refer to disengagement latch actuation projection and complete to thread off so that work is more steady Fixed reliable.
The present invention is further arranged to：Described triggering device includes magnetictrip and drive mechanism, electromagnetic trip The triggering end drive connection through drive mechanism and latching device for the dynamic iron core of device；Described control circuit includes normal disjunction and controls electricity Road and pressure disjunction control circuit,
Described normal disjunction control circuit, for controlling divide-shut brake magnet exciting coil forward direction break-make and reverse break-make, thus real Existing catalyst divide-shut brake controls, and has point/switching voltage signal detection end in described normal disjunction control circuit, point/close a floodgate electric The exportable switching voltage signal driving catalyst to close a floodgate in pressure signal detection end, and drive the separating brake voltage letter of catalyst separating brake Number；
Described pressure disjunction control circuit, for controlling the tripping coil break-make of magnetictrip, magnetictrip de- To drive, the triggering end of latching device completes moving contact to the conducting of fastening wire circle and static contact is forced to thread off, and described pressure disjunction controls electricity Road includes forcing disjunction power supply circuits, divide-shut brake signal detection circuit, contact state testing circuit and trip coil switch Control circuit, described pressure disjunction power supply circuits export unidirectional current, and pressure disjunction power supply circuits are trip coil on-off control Circuit is powered, and has an on and off switch in trip coil ON-OFF control circuit,
Described contact state testing circuit produces contact disjunction when catalyst moving contact and static contact disconnect and judges signal, Contact disjunction judges signal as the pick-off signal controlling on and off switch disconnection in trip coil ON-OFF control circuit, contact shape State testing circuit produces contact closure in catalyst moving contact and static contact closure and judges signal, and contact closure judges that signal is made The Continuity signal turning on on and off switch in triggering trip coil ON-OFF control circuit, the signal of contact state testing circuit is defeated Go out end and be connected formation signal operating circuit, signal work electricity with the control end of on and off switch in trip coil ON-OFF control circuit It is serially connected with signal circuit controlling switch, during described signal circuit controlling switch cut-off, signal operating circuit disconnects, described letter in road In trip coil ON-OFF control circuit when number operating circuit disconnects, on and off switch is off,
The control end of described signal circuit controlling switch is connected with the signal output part of divide-shut brake signal detection circuit, described Divide-shut brake signal detection circuit receives the output signal at described point/switching voltage signal detection end, divide-shut brake signal detection circuit Control described signal circuit controlling switch cut-off during the switching voltage signal receiving described point/switching voltage signal detection end, Divide-shut brake signal detection circuit triggers described signal when receiving the separating brake voltage signal at described point/switching voltage signal detection end Circuit controls switch conduction.
Under technique scheme, realize forcible tripping device and automatically trigger control, control more convenient, its work process For：Normal disjunction control circuit point/switching voltage signal detection end output switching voltage signal when, control described signal return Way control switch ends, then signal operating circuit disconnects, and the output signal of contact state testing circuit cannot reach electrical apparatus release line On and off switch in circle ON-OFF control circuit, in trip coil ON-OFF control circuit, on and off switch is off, electrical apparatus release Coil switch control circuit is in disconnection, and magnetictrip does not work；Normal disjunction control circuit point/switching voltage signal During the output separating brake voltage signal of test side, divide-shut brake signal detection circuit trigger signal circuit controls switch conduction, signal works Circuit turn-on；Contact state testing circuit detects to the dynamic and static contact state of catalyst, during the normal disjunction of dynamic and static contact, Contact state testing circuit sends contact disjunction and judges signal, controls on and off switch in trip coil ON-OFF control circuit to break Open, trip coil ON-OFF control circuit is in disconnection, magnetictrip does not work；It is in the dynamic and static contact of catalyst and close During conjunction state, contact state testing circuit sends contact closure and judges signal, and now signal operating circuit is on, and touches Head closure judges that signal reaches the control end of on and off switch in trip coil ON-OFF control circuit, triggering through signal operating circuit On and off switch conducting in trip coil ON-OFF control circuit, trip coil ON-OFF control circuit turns on, magnetictrip work Make, realize driving the triggering end of the latching device of forcible tripping device, catalyst is carried out force disjunction.Realize the strong of catalyst Disjunction processed is it is ensured that catalyst is safe and reliable.
The present invention is further arranged to：Described divide-shut brake signal detection circuit includes bleeder circuit one, is in series with optocoupler The bleeder circuit two of clutch, delay capacitor and voltage comparator,
The input of described bleeder circuit one connects the outfan forcing disjunction power supply circuits, and the of described bleeder circuit one One outfan connects the in-phase input end of voltage comparator, the second output head grounding of bleeder circuit one, and bleeder circuit one is used for The in-phase input end partial pressure of voltage comparator, bleeder circuit one provides reference voltage for the in-phase input end of voltage comparator,
First outfan of described bleeder circuit two connects delay capacitor one end, bleeder circuit 2 first outfan and time delay The common port of capacitance connection is connected on the inverting input of voltage comparator, and the second outfan of bleeder circuit two connects time delay The other end of electric capacity is simultaneously grounded, and bleeder circuit two is used for the inverting input partial pressure of voltage comparator, and bleeder circuit two is voltage The inverting input of comparator provides voltage to be measured,
The voltage to be measured of inverting input and the reference voltage of in-phase input end are compared by described voltage comparator, The voltage to be measured of described voltage comparator inverting input is defeated higher than during the high-voltage value of described reference voltage level voltage to be measured Go out low level signal, the described signal circuit controlling switch cut-off in voltage comparator output low level signal, in described voltage The voltage to be measured of comparator inverting input is to be output as high electricity during less than the low voltage value of described reference voltage level voltage to be measured Ordinary mail number, triggers described signal circuit controlling switch conducting in voltage comparator output high level signal,
Described photo-coupler is connected on the input of bleeder circuit two and forces between disjunction power supply circuits outfan, optocoupler The output signal that clutch is used for foundation point/switching voltage signal detection end controls the input of bleeder circuit two and forces disjunction confession Break-make between electric circuit output end,
Photo-coupler receives point/the switching voltage signal at switching voltage signal detection end when, control bleeder circuit two Turn between input and pressure disjunction power supply circuits outfan, and then so that described delay capacitor is charged, and described voltage ratio It is described high-voltage value voltage to be measured compared with the voltage to be measured of device inverting input input；
Photo-coupler receives point/the separating brake voltage signal at switching voltage signal detection end when, control bleeder circuit two Input is separated with pressure disjunction power supply circuits outfan, and then described delay capacitor discharges and is formed as described voltage ratio The default delay time of described high-voltage value voltage to be measured, described voltage after default delay time are provided compared with device inverting input The inverting input input described low voltage value voltage to be measured of comparator.
Above-mentioned divide-shut brake signal detection circuit has circuit structure simply, easily realizes, good stability, controls reliability conveniently.
The present invention is further arranged to：Described contact state testing circuit includes catalyst auxiliary contact, amplifier subtraction Circuit, bleeder circuit three and detection resistance, described catalyst auxiliary contact and probe of contactor synchronizing close and disconnection,
Described detection resistance two ends are connected on the in-phase input end and inverting input of described amplifier subtraction circuit, If the junction point that detection resistance is connected with described amplifier subtraction circuit in-phase input end is homophase junction point, described amplifier subtraction electricity Road is used for the differential voltage at electric for detection resistance two ends being converted into voltage-to-ground, if detection resistance is anti-with described amplifier subtraction circuit The junction point that phase input connects is anti-phase junction point,
The input of described bleeder circuit three connects the outfan forcing disjunction power supply circuits, and the of described bleeder circuit three One outfan is connected on described homophase junction point, and the second outfan of bleeder circuit three is connected simultaneously with described auxiliary contact one end Ground connection, the other end of described auxiliary contact is connected on described anti-phase junction point,
When auxiliary contact disconnects, described detection resistance both end voltage is 0, and the outfan of described amplifier subtraction circuit corresponds to Output contact disconnects and judges signal, and contact disconnects and judges signal as low level, the detection resistance two ends shape when auxiliary contact closes Become voltage, the outfan corresponding output contact closure of described amplifier subtraction circuit judges signal, and contact closure judges signal as height Level.
Above-mentioned contact state testing circuit work process is, in moving contact and the static contact disjunction state of catalyst, to connect Tentaculum auxiliary contact also simultaneous break, the voltage at detection resistance two ends is 0, the outfan corresponding output contact of amplifier subtraction circuit Disconnect and judge signal, as low level, in moving contact and the static contact closure state of catalyst, catalyst auxiliary contact is also same Step is in closure state, and catalyst auxiliary contact, bleeder circuit, detection resistance form loop, and detection resistance two ends form voltage, The outfan of amplifier subtraction circuit corresponding output contact closure judges signal, as high level, and this circuit structure is simple, stability Good, reliable operation.
The present invention is further arranged to：Described pressure disjunction power supply circuits are the line taking to power supply on catalyst dynamic/static contact Voltage feed circuit, forces disjunction power supply circuits to export unidirectional current after blood pressure lowering, rectification, filtering, forces disjunction power supply circuits also Working power as divide-shut brake signal detection circuit, contact state testing circuit.Control electricity using under the program, forcing disjunction Road is trip coil control circuit, divide-shut brake signal detection circuit, the working power of contact state testing circuit, forces disjunction Control circuit takes to catalyst dynamic/static contact, and power good is reliable, thus ensureing that whole pressure disjunction control circuit work can Lean on.
The invention will be further described below in conjunction with the accompanying drawings.
Brief description
Fig. 1 is specific embodiment of the invention permanent magnetism type contactor "on" position structural representation；
Fig. 2 forces gate-dividing state structural representation for specific embodiment of the invention permanent magnetism type contactor；
Fig. 3 is specific embodiment of the invention permanent magnet operating device, forces disjunction spring and force disjunction jump cap vertically The explosive view decomposing；
Fig. 4 is the structural representation when forcing disjunction spring energy-storage state for the specific embodiment of the invention forcible tripping device Figure；
Fig. 5 is the structural representation when forcing disjunction spring release conditions for the specific embodiment of the invention forcible tripping device Figure；
Fig. 6 be the specific embodiment of the invention force disjunction spring, force that disjunction jump cap and casing axially decompose quick-fried Fried view；
Fig. 7 is specific embodiment of the invention snap close piece structural representation；
Fig. 8 is specific embodiment of the invention tripping part structural representation；
Fig. 9 is specific embodiment of the invention control circuit theory diagram；
Figure 10 is the specific embodiment of the invention normal disjunction electric operation control circuit figure；
Figure 11 forces disjunction control circuit one for the specific embodiment of the invention；
Figure 12 forces disjunction control circuit two for the specific embodiment of the invention；
Figure 13 is specific embodiment of the invention divide-shut brake signal detection circuit equivalent circuit one；
Figure 14 is specific embodiment of the invention divide-shut brake signal detection circuit equivalent circuit two.
Specific embodiment
Referring to accompanying drawing 1 ~ 8, a kind of permanent magnetism type contactor with disjunction protection device disclosed by the invention, including catalyst originally Body and control circuit, catalyst body includes casing 1, permanent magnet operating device 2 and contact apparatus 3, and contact apparatus 3 wrap Include moving contact 31 and the static contact 32 of corresponding matching, permanent magnet operating device 2 include controlling dynamic and static contact 31,32 divisions dynamic Iron core 21, the permanent magnetism coil mechanism 22 with dynamic iron core 21 corresponding matching, and drive the detached reaction spring of dynamic and static contact（Figure Not shown in）；Permanent magnetism coil mechanism 22 includes bobbin 221, divide-shut brake magnet exciting coil 222, yoke 223 and permanent magnet 224.Forcible tripping device 4 is additionally provided with described casing 1, forcible tripping device 41 include can deformation energy storage pressure disjunction bullet Spring 41, forces disjunction spring 41 to have a deformation driving release end 411, this deformation drives release end 411 to be connected with and forcing to divide Disconnected spring 41 can drive the detached pressure disjunction jump cap 42 of dynamic and static contact 31,32 of "on" position when releasing energy, forces disjunction Jump cap 42 corresponding matching have for locking and release force disjunction spring 41 latching device 43, latching device 43 have can with strong Disjunction jump cap 42 snap fit processed is realizing forcing disjunction spring 41 to be latched in the lock end of energy storage state, and drives lock end Thread off to discharge the triggering end forcing disjunction spring 41 with forcing disjunction jump cap 42, the triggering end of latching device 43 connects triggering dress Put 44.
In this specific embodiment, described pressure disjunction spring 41 is the stage clip 41 of compressed energy-storage, and stage clip is helical spring, pressure Spring 41, between dynamic iron core 21 and permanent magnetism coil mechanism 22, forces disjunction jump cap 42 to be connected to the deformation forcing disjunction spring 41 Drive on release end 411, force disjunction jump cap 42 to be located at below dynamic iron core 21, and can when forcing disjunction spring 41 to release energy Pushing tow dynamic iron core 21 moves to open position by closing position, that is, when forcing disjunction spring to be in energy storage state, force disjunction to be jumped Cap is in lower section during closing position positioned at dynamic iron core（Force disjunction jump cap directly can abut with dynamic iron core, it is possibility to have one Fixed interval stroke）, force disjunction spring release when, force disjunction jump cap pushing tow be in closing position dynamic iron core so that Dynamic iron core moves to open position from closing position.Using stage clip energy storage, and between dynamic iron core and permanent magnetism coil mechanism, its Compact conformation, mounting arrangements are convenient, and force disjunction jump cap to drive dynamic iron core to carry out forcing separating brake, reliable in action.As feasible Technical scheme, force disjunction spring can be extension spring, force disjunction jump cap can be connected in fact with the dynamic installing rack that touches of moving contact Now drive the design of moving contact and static contact disjunction.
Wherein, barrel-shaped spring base 11 is provided with casing 1, in spring base 11, is provided with spring cavity 110, spring cavity 110 court To dynamic iron core 21 one end open, force disjunction spring 41 to be assemblied in spring cavity 110, force disjunction spring 41 one end to be supported on bullet The bottom in spring chamber 110, that is, in casing 1, forces the other end of disjunction spring 41 to abut with forcing disjunction jump cap 42, forces disjunction to be jumped Cap 42, through forcing disjunction spring 41 to be supported on spring cavity 110 opening, forces disjunction jump cap 42 positioning to be assemblied in spring cavity 110 Slidably, it is provided with axial centre positioning through hole on forcing disjunction jump cap 42；It is connected with guide post 12 in dynamic iron core 21 lower end, lead Pass through spring cavity 110 to bar 12 and be inserted in the bobbin 221 of permanent magnetism coil mechanism 22 in the hole slidably, force disjunction jump cap 42 are sleeved on guide post 12 through axial positioning through hole, force disjunction jump cap 42 to be provided with driving and force disjunction jump cap 42 to be compressed by force The spring energy-storage actuating arm 421 of disjunction spring 41 processed energy storage, is provided with open slot 111 on spring base 11 side wall, forces disjunction to be jumped On cap 42, spring energy-storage actuating arm 421 stretches out from the open slot 111 of spring base 11.Then pull and force spring storage in disjunction jump cap 42 Energy actuating arm 421, makes pressure disjunction jump cap 42 compress and forces disjunction spring 41 to complete energy storage, force disjunction jump cap 42 and locking machine The lock end locking of structure 43, realizes forcing disjunction spring 41 to be latched in energy storage state.There is structure simple, easy to operate and dynamic Make advantage reliablely and stablely.Certainly as the feasible technical scheme of the present invention, force disjunction spring energy storage can by with change Shape drives setting specialized agency on the relative other end in release end to carry out forcing disjunction spring-compressed energy storage, but it designs and operates Upper have inconvenience, therefore preferentially adopts the structure design of this specific embodiment.
In this specific embodiment, it is provided with, in described pressure disjunction jump cap 42, at least two locks being uniformly distributed circumferentially and refers to 422, latching device 43 includes referring to the latching device unit of 422 corresponding matching with each lock, and latching device unit includes installation Pedestal 433 in casing 1, and it is pivoted on snap close piece 434 on pedestal 433, tripping part 435；Tripping part 434 has Trip positions and latched position, tripping part 435 is provided with and forces disjunction jump cap 42 to be linked to drive tripping part 435 from de- Button bit puts the latch actuation portion 4351 turning to latched position, and the locking stopper section referring to 422 lockings/dropout cooperation with lock 4352, locking stopper section 4352 on the upper swing arm of tripping part 435, after snap close piece 434 is arranged on described tripping part 435 Side, snap close piece 434 includes the rotatable closing piece 4344 that correspondence is journaled into swing arm position on tripping part 435, rotatable closing piece 4344 extend downwardly the coupled arm 4345 driving it to rotate, and the rotatable closing piece 4344 of described snap close piece 434 is provided with for jumping Fastener 435 in trip positions against dropout bearing surface 4341, the lock-bit card leaning in latched position for tripping part 435 Plate 4342, and drive snap close piece 434 rotation to realize tripping part 435 and lock the dropout trigger arm 4343 referring to 422 dropouts, thread off and touch Send out arm 4343 one end be fixed on snap close piece 434, dropout trigger arm 4343 other end be triggering end, described tripping part 435 upper Swing arm is provided with and is in the lock-bit window 4353 snapping in for lock-bit clamp 4342 during trip positions, lock-bit window for tripping part 435 It is provided with the upside of in the of mouthfuls 4353 and be in for tripping part 435 when being clasped, be in the locked position with lock-bit clamp 4342 during trip positions With lock-bit clamp 4342 against the baffle plate 4354 coordinating, in the coupled arm of the bottom moved end of described tripping part 435 and snap close piece 434 It is provided with the linkage torsion spring 437 driving the upper swing arm of tripping part 435 to be close to rotatable closing piece 4344, link torsion spring between 4345 437 are pivoted on pedestal 433, and the side torsion spring arm of linkage torsion spring 437 is connected to the bottom moved end of tripping part 435, linkage The opposite side torsion spring arm of torsion spring 437 is connected on the coupled arm 4345 of snap close piece 434.
The latching device operation principle of said structure is：As Fig. 4, force disjunction spring 41 forcing disjunction jump cap 42 compression When carrying out energy storage, on pressure disjunction jump cap 42 driving tripping part 435, latch actuation portion 4351 is so that tripping part 435 is from dropout position Put（As Fig. 5）Turn to latched position（As Fig. 4）, force disjunction jump cap 42 to be locked and refer to 422 and tripping part 435 locking cooperation, will Force disjunction jump cap 42 be latched in pressure disjunction spring 41 energy storage state, in the process, tripping part 435 rotate when, tripping The upper swing arm of part 435 progressively disengages snap close piece 434, then on the upper swing arm of tripping part 435, lock-bit window 4353 gradually disengages Lock-bit clamp 4342 on snap close piece 434, simultaneously drives linkage torsion spring 437, and linkage torsion spring 437 provides and drives snap close piece 434 to rotate Power, but due on snap close piece 434 lock-bit clamp 4342 pinned by baffle plate 4354 above lock-bit window on tripping part 435, linkage Torsion spring 437, by energy storage, with the rotation of tripping part 435, and is gradually crossed lock-bit clamp 4342 and is clasped with baffle plate 4354 and face Boundary's point, lock-bit clamp 4342 disengages baffle plate 4354, exits lock-bit window 4353, and linkage torsion spring 437 drives snap close piece 434 to rotate, When tripping part 435 turns to latched position, unclamp pressure disjunction jump cap 42, in the presence of linkage torsion spring 437, tripping part 435 It is close to snap close piece 434, realize the lock-bit clamp 4342 that tripping part 435 is resisted against snap close piece 434, thus realize snap close piece 434 will Tripping part 434 is locked in latched position（As Fig. 4 and Fig. 1）.In the energy needing release to force disjunction spring 41, drive and thread off Trigger arm 4343, snap close piece 434 rotates, and snap close piece 434 drives linkage torsion spring 437, because initial stage tripping part 435 is resisted against lock On the lock-bit clamp 4342 of part 434, tripping part 435 cannot rotate, and link torsion spring 437 energy storage, when lock-bit clamp on snap close piece 434 4342 snap in lock-bit window 4353 again, and under linkage torsion spring 437 drives, tripping part 435 rotates, and are snapped de- on part Button bearing surface 4341 stop limit, tripping part 435 turns to trip positions from latched position, forces disjunction jump cap 42 and tripping part 435 complete to thread off, and force disjunction spring 41 to be released, simultaneously in the presence of linkage torsion spring 437, lock-bit card on snap close piece 434 Plate 4342 is buckled in lock-bit window 4353, and that is, snap close piece 434 holds tripping part 435 through lock-bit clamp 4342.This latching device, Reasonable in design is ingenious, compact conformation, safe and reliable.
The back side of described tripping part 435 is extended with pivot joint ear 4355, and the pivot joint ear 4355 of tripping part 435 is contained in base through pivot Rotatable on seat 11, lock is provided with the upper swing arm of tripping part 435 and refers to latch-up window 4356, described latch actuation portion 4351 is Refer to the latch actuation projection 4351 in latch-up window 4356 located at lock, latch actuation projection 4351 is in towards pressure disjunction jump cap 42 Side extends and stretches out described lock and refers to latch-up window 4356, and described latch actuation projection 4351 is referred to the lock forcing disjunction jump cap 42 422 counter stopper are realized driving tripping part 435 to turn to latched position from trip positions, and described locking stopper section 4352 is position Block 4352 in latch-up window 4356 upside.So, push pressure disjunction jump cap 42 to pressure disjunction spring 41 energy storage, tripping Part 435 leans against on snap close piece 434, forces the lock in disjunction jump cap 42 to refer to 422 and can avoid block 4352 on tripping part 435, and Press to the latch actuation projection 4351 on tripping part 435 so that tripping part 435 turns to latched position from trip positions, lock On part 434, tripping part 435 is locked in latched position by lock-bit clamp 4342, forces disjunction jump cap 42 forcing disjunction spring afterwards In the presence of 41, force disjunction jump cap 42 finger of locking 422 to be stuck on the block 4352 of snap close piece 435, force in disjunction jump cap 42 Lock refers to 422 blocks 4352 being blocked window 4356 upside and stops locking, completes to force the energy storage of disjunction spring；Its structure is simple Compact, force disjunction jump cap reliable with tripping part interlocking fit.
For enabling lock finger pressure preferably to drive snap close piece to rotate to latch actuation projection, described latch actuation projection 4351 In towards forcing disjunction jump cap 422 side to extend obliquely, the downside that described lock refers to 422 is provided with breach 4221, and refers to 422 in lock Lower wall forms circular arc guide surface 4222.When lock finger pressure is to latch actuation projection, circular arc guide surface has guiding locking and drives Dynamic projection slides along so that snap close piece rotates more smoothly reliable rotation.Wherein, refer to 422 upper sides in described lock to be provided with Extend to lock and refer to the inclined-plane 4223 of 422 finger tips, this inclined-plane 4223 is from referring to 422 finger tip one end away from lock and extend to lock obliquely refer to 422 finger tips.So in snap close piece unblock tripping part, the block of snap close piece can more smoothly disengage lock and refer to so that working more Reliable and stable.
As shown in Fig. 9 ~ 14, permanent magnetism type contactor is furnished with control circuit, and control circuit includes normal disjunction control circuit 5 With pressure disjunction control circuit 6；Normal disjunction control circuit, for controlling divide-shut brake magnet exciting coil forward direction break-make and reversely leading to Disconnected, thus realize catalyst divide-shut brake controlling, there is in described normal disjunction control circuit 5 point/switching voltage signal detection end A, point/the exportable switching voltage signal driving catalyst to close a floodgate of switching voltage signal detection end A, and drive catalyst separating brake Separating brake voltage signal.
Described normal disjunction control circuit 5 includes divide-shut brake power supply circuits 5-1, current rectifying and wave filtering circuit 5-2, voltage detecting electricity Road 5-3, accumulator 5-4, AVR single chip and contactor coil ON-OFF control circuit 5-5；Wherein, divide-shut brake power supply circuits 5-1 Using existing frequently-used civil power（The alternating current of 220V）；Described contactor coil ON-OFF control circuit 5-5 includes closing switch control Circuit processed and separating brake ON-OFF control circuit；Closing switch control circuit is realized contactor coil forward conduction and is disconnected control, real Existing shutting-brake control；Separating brake ON-OFF control circuit is realized contactor coil reverse-conducting and is disconnected control, realizes separating brake control；Described Divide-shut brake power supply circuits 5-1 powers for accumulator 5-4 and charges, and wherein, current rectifying and wave filtering circuit 5-2 includes rectifier bridge D2 and filter Ripple electric capacity C3, the 220V alternating current that divide-shut brake power supply circuits 5-1 is provided carries out rectification and filtering becomes unidirectional current；Voltage detecting Circuit 5-3 connects rectifying and wave-filtering electricity after including divider resistance R4 and divider resistance R6, divider resistance R4 and divider resistance R6 series connection The outfan of road 5-2, the dividing point being formed between divider resistance R4 and divider resistance R6 is to divide/switching voltage signal detection end A. Then divide-shut brake power supply circuits close a floodgate when power, point/switching voltage signal detection end A be switching voltage signal（High level）, point Combined floodgate power supply circuits are not powered in separating brake, point/switching voltage signal detection end A voltage is reduced to rapidly 0, is separating brake voltage letter Number.In AVR single chip, pin PB3 connects and divides/switching voltage signal detection end A, divides/switching voltage signal detection end for receiving The separating brake voltage signal of A and switching voltage signal.Described closing switch control circuit includes metal-oxide-semiconductor Q1, metal-oxide-semiconductor Q3, AVR monolithic On machine, pin PB1 controls metal-oxide-semiconductor Q1, metal-oxide-semiconductor Q3, and metal-oxide-semiconductor Q1, metal-oxide-semiconductor Q3 are connected on divide-shut brake magnet exciting coil 222 two ends simultaneously It is connected on current rectifying and wave filtering circuit 5-2 outfan and form switch control circuit；In AVR single chip, pin PB3 receives point/closes a floodgate electricity The switching voltage signal of pressure signal detection end A, pin PB1 is changed into high level, conducting metal-oxide-semiconductor Q1 and metal-oxide-semiconductor by AVR single chip Q3, the electric current of rectified mistake flows directly into the divide-shut brake magnet exciting coil 222 of catalyst, the sense of current such as in figure arrow a direction, point The dynamic iron core 21 that combined floodgate magnet exciting coil 222 forms magnetic field catalyst consistent with permanent magnet 224 magnetic direction is transported downwards by magnetic force Dynamic, drive moving contact 31 and static contact 32 to close, after postponing tens of seconds, complete to close a floodgate；Pin PB1 is changed into low by AVR single chip Level, metal-oxide-semiconductor Q1, metal-oxide-semiconductor Q3 end, and catalyst relies on the magnetic force that permanent magnet 224 produces to maintain closure.
Described accumulator 5-4 includes storage capacitor C6 and storage capacitor C7；Storage capacitor C6 is as separating brake on-off control Circuit power supply, storage capacitor C6 one end is grounded, storage capacitor C6 other end connecting dividing lock power supply circuits outfan and two Pole pipe D6 negative electrode, the outfan of diode D6 anode connecting dividing lock power supply circuits；Storage capacitor C6 and diode D6 negative electrode it Between also connect an electric capacity C5；Described separating brake ON-OFF control circuit includes metal-oxide-semiconductor Q2, metal-oxide-semiconductor Q4, the pin PB0 of AVR single chip Metal-oxide-semiconductor Q2, the pin PB2 of AVR single chip is controlled to control metal-oxide-semiconductor Q4, metal-oxide-semiconductor Q2, metal-oxide-semiconductor Q4, electric capacity C5, divide-shut brake excitation Coil and storage capacitor C6 series connection form the switch control circuit controlling the reverse break-make of divide-shut brake magnet exciting coil 222；Storage capacitor C7 is as AVR single chip power supply；Storage capacitor C7 one end is grounded, and the storage capacitor C7 other end connects AVR single chip pin It is in series with diode D7, diode D7 anode connects and divides between VCC, storage capacitor C7 and divide-shut brake power supply circuits 5-1 outfan Combined floodgate power supply circuits 5-1 outfan, gives storage capacitor after diode D7 during combined floodgate power supply circuits 5-1 outfan output current C7 charge and power to AVR single chip, in divide-shut brake power supply circuits 5-1 power-off storage capacitor C7 can only export mono- to AVR Piece machine is powered；It is in series with NPN type triode Q5 between storage capacitor C7 and diode D7, NPN type triode Q5 is launched Pole connects the pin VCC of storage capacitor C7 and AVR single chip, and NPN type triode Q5 colelctor electrode connects diode D7 negative electrode, NPN Type audion Q5 base stage connects resistance R10, and the resistance R10 other end is connected between storage capacitor C6 and electric capacity C5 and two poles Between pipe D7 and NPN type triode Q5 colelctor electrode.After electric capacity C5 and storage capacitor C6 is full of, triggering NPN type triode Q5 is led Logical, realize the charging of storage capacitor C7.In separating brake, divide-shut brake power supply circuits 5-1 power-off, storage capacitor C7 is to AVR single chip Power supply, AVR single chip pin PB3 detects separating brake voltage signal, the high electricity of pin PB0 and pin PB2 output of AVR single chip Flat, control metal-oxide-semiconductor Q2 and metal-oxide-semiconductor Q4 conducting, storage capacitor C6 is energized to divide-shut brake magnet exciting coil 222, the sense of current such as in figure Arrow b direction, the electromagnetic field that divide-shut brake magnet exciting coil 222 is formed and the magnetic direction that produces of permanent magnet 224 to anti-, catalyst Dynamic iron core 21 drives moving contact and static contact disjunction in the presence of reaction spring, completes separating brake.
For being adapted to the Based Intelligent Control of forcible tripping device, install pressure disjunction control on the basis of normal disjunction control circuit 5 additional Circuit 6 processed；Wherein, described triggering device 44 includes magnetictrip 441 and drive mechanism, the dynamic ferrum of magnetictrip 441 The triggering end drive connection through drive mechanism and latching device 43 for the core, the tripping coil of magnetictrip 411 turns on to drive lock The triggering end of buckle mechanism 43 completes moving contact and static contact is forced to thread off；In this specific embodiment, drive mechanism includes cross bar 442, the middle part of cross bar 442 is fixed in the dynamic iron core of magnetictrip 441, and the two ends of cross bar 442 are respectively erected in snap close piece Above 43 dropout trigger arm 4343, the dynamic iron core of magnetictrip drives cross bar descending, pushes the dropout trigger arm of snap close piece, Snap close piece is rotated, and realizes snap close piece unblock tripping part, tripping part is threaded off with forcing disjunction jump cap.
Described pressure disjunction control circuit is used for controlling the tripping coil break-make of magnetictrip, and described pressure disjunction controls Circuit includes forcing disjunction power supply circuits 6-1, divide-shut brake signal detection circuit 6-2, contact state testing circuit 6-3 and dropout Device coil switch control circuit 6-4, described pressure disjunction power supply circuits 6-1 exports unidirectional current, and pressure disjunction power supply circuits 6-1 is Trip coil ON-OFF control circuit 6-4 is powered, and has an on and off switch Q7 in trip coil ON-OFF control circuit 6-4, this It is metal-oxide-semiconductor Q7 in specific embodiment, that is, the electrode input end VCC3 of trip coil ON-OFF control circuit 6-4 connects pressure disjunction The outfan of power supply circuits 6-1（In figure is had and is accordingly identified with VCC3 in forcing disjunction power supply circuits）, trip coil opens Close the metal-oxide-semiconductor Q7 that connects between control circuit 6-1 electrode input end VCC3 and trip coil, another termination of trip coil Ground；Described contact state testing circuit 6-3 is used for detecting that catalyst moving contact and static contact divide/conjunction state, described contact state Testing circuit 6-3 produces contact disjunction when catalyst moving contact and static contact disconnect and judges signal, and contact disjunction judges signal As the pick-off signal controlling on and off switch Q7 disconnection in trip coil ON-OFF control circuit 6-4；Contact state testing circuit 6-3 produces contact closure in catalyst moving contact and static contact closure and judges signal, and contact closure judges signal as triggering The Continuity signal of on and off switch Q7 conducting in trip coil ON-OFF control circuit 6-4；The signal of contact state testing circuit 6-3 Outfan is connected formation signal operating circuit, letter with the control end of on and off switch Q7 in trip coil ON-OFF control circuit 6-4 It is serially connected with signal circuit controlling switch Q6, in this specific embodiment, signal circuit controlling switch Q6 is MOS in number operating circuit Pipe；Described signal operating circuit disconnects when signal circuit controlling switch Q6 is ended, when signal operating circuit disconnects, described break-make Switch Q7 ends, trip coil ON-OFF control circuit because receiving the output signal of contact state testing circuit 6-3 6-4 disconnects, and electrical apparatus release does not work；The control end of described signal circuit controlling switch Q6 is with divide-shut brake signal detection circuit 6-2's Signal output part connects, and described divide-shut brake signal detection circuit 6-2 receives the output of described point/switching voltage signal detection end A Signal, divide-shut brake signal detection circuit 6-2 receives the switching voltage signal time control of described point/switching voltage signal detection end A Make described signal circuit controlling switch Q6 cut-off, divide-shut brake signal detection circuit 6-2 receives the inspection of described point/switching voltage signal Described signal circuit controlling switch Q6 conducting is triggered during the separating brake voltage signal surveying end A.
Work process is：Normal disjunction control circuit point/switching voltage signal detection end A output switching voltage signal When, divide-shut brake signal detection circuit 6-2 output is closed a floodgate and is judged signal, and signal circuit controlling switch Q6 is ended, signal operating circuit Off-state, the output signal of contact state testing circuit 6-3 cannot reach the control end of on and off switch Q7, and on and off switch Q7 cuts Only, trip coil ON-OFF control circuit does not work, and magnetictrip does not work.
In this specific embodiment, described divide-shut brake signal detection circuit 6-2 includes bleeder circuit one 6-2-1, is in series withPhoto-couplerBleeder circuit two 6-2-2 of U2, and voltage comparator C；The input of described bleeder circuit one 6-2-1 connects strong The outfan of disjunction power supply circuits 6-1 processed, first outfan of described bleeder circuit one 6-2-1 connects the same of voltage comparator C Phase input, second output head grounding of bleeder circuit one 6-2-1, bleeder circuit one 6-2-1 is used for the homophase of voltage comparator C Input partial pressure, the in-phase input end for voltage comparator C for bleeder circuit one 6-2-1 provides reference voltage；This specific embodiment, Described bleeder circuit one 6-2-1 is in series by resistance R19 and resistance R20；Resistance R19 one end is to connect to force disjunction to be powered electricity The input of road 6-1 outfan, resistance R19 and resistance R20 junction point are dividing point, also first for bleeder circuit one 6-2-1 Outfan, resistance R20 one end connects resistance R19, and the resistance R20 other end is the second outfan of ground connection, in parallel on resistance R20 One electric capacity C11 forms protection；First outfan of described bleeder circuit two 6-2-2 connects delay capacitor C12 one end, partial pressure electricity The common port of road two 6-2-2 the first outfan and delay capacitor C12 connection is connected to the inverting input of voltage comparator C12 On, second outfan of bleeder circuit two 6-2-2 connects the other end of delay capacitor C12 and is grounded, and bleeder circuit two 6-2-2 uses In the inverting input partial pressure of voltage comparator C, the inverting input for voltage comparator C for bleeder circuit two 6-2-2 provides to be treated Survey voltage；The voltage to be measured of inverting input and the reference voltage of in-phase input end are compared by described voltage comparator C, The voltage to be measured of described voltage comparator C inverting input is defeated higher than during the high-voltage value of described reference voltage level voltage to be measured Go out low level signal, the described signal circuit controlling switch Q6 cut-off in voltage comparator C output low level signal, in described electricity The voltage to be measured of pressure comparator C inverting input is to be output as height during less than the low voltage value of described reference voltage level voltage to be measured Level signal, triggers described signal circuit controlling switch Q6 conducting in voltage comparator C output high level signal；
Described photo-coupler U2 is connected on the input of bleeder circuit two 6-2-2 and forces disjunction power supply circuits 6-1 output Between end, the output signal that photo-coupler U2 is used for foundation point/switching voltage signal detection end A controls bleeder circuit two 6-2-2 Input and force disjunction power supply circuits 6-1 outfan between break-make；Photo-coupler U2 receives point/switching voltage signal inspection During the switching voltage signal of survey end A, control the input of bleeder circuit two 6-2-2 and force disjunction power supply circuits 6-1 outfan Between turn on, and then so that described delay capacitor C12 is charged, and the electricity to be measured of described voltage comparator C inverting input input Press as described high-voltage value voltage to be measured；Photo-coupler U2 receives point/the separating brake voltage signal of switching voltage signal detection end A When, control the input of bleeder circuit two 6-2-2 and force the separated of disjunction power supply circuits 6-1 outfan, and then described prolong When electric capacity C12 discharge and be formed as described voltage comparator C inverting input the default of described high-voltage value voltage to be measured is provided Delay time（It is 2 seconds in this specific embodiment）, the inverting input input of described voltage comparator C after default delay time Described low voltage value voltage to be measured.
This specific embodiment, photo-coupler U2 includes light-receiving device and luminous organ；Described bleeder circuit two 6-2-2 is by resistance R22 and resistance R23 is in series, and resistance R22 one end connectsPhoto-couplerThe light-receiving device of U2（This end of resistance R22 is bleeder circuit The input of two 6-2-2）, resistance R22 other end connection resistance R23, the anti-phase input foot of voltage comparator C, delay capacitor C12 （This end of resistance R22 is the first outfan of bleeder circuit two）；Resistance R23 one end connects resistance R22, another termination of resistance R23 Ground（This end of resistance R23 is the second outfan）；Delay capacitor C12 one end connects the anti-phase input foot of voltage comparator C, time delay electricity Hold C12 other end ground connection；Photo-couplerThe light-receiving device of U2 connects the outfan forcing disjunction power supply circuits 6-1,Photo-couplerU2 Control and force whether disjunction power supply circuits 6-1 powers to bleeder circuit two 6-2-2；The luminous organ of described photo-coupler U2 connects Point/switching voltage signal detection end A, the outfan output separating brake judgement signal of voltage comparator C（High level）Or judgement of closing a floodgate Signal（Low level）.Point/switching voltage signal detection end A be output as switching voltage signal when, point/switching voltage signal detection End A output for high level, the luminous organ of photo-coupler U2 lights, the light-receiving device conducting of photo-coupler U2, then force disjunction to supply Circuit 6-1 power input is turned on bleeder circuit two 6-2-2 input, and the inverting input of voltage comparator C accesses by force Disjunction power supply circuits 6-1 power supply processed, powers on the one hand to the inverting input of voltage comparator C, forms high-voltage value electricity to be measured Pressure, charges on the other hand to delay capacitor C12, and now, the inverting input voltage to be measured of voltage comparator C is higher than positive input The reference voltage at end, voltage comparator C is output as closing a floodgate and judges signal（Low level）, metal-oxide-semiconductor Q6 cut-off；Point/switching voltage letter When number defeated A in test side goes out for separating brake voltage signal, point/voltage of switching voltage signal detection end A is reduced to 0, photo-coupler U2's Luminous organ does not light, the light-receiving device cut-off of photo-coupler U2, then force disjunction power supply circuits 6-1 power input and bleeder circuit Two 6-2-2 inputs disconnect, and the inverting input of voltage comparator C disconnects with forcing disjunction power supply circuits 6-1 power supply, this time delay When electric capacity C12 electric discharge, delay capacitor C12 powers to the inverting input of voltage comparator C, realizes voltage comparator C time delay defeated Go out separating brake and judge signal（High level）, default delay time determines by delay capacitor C12（Delay capacitor in this specific embodiment C12 is 1 μ F, and default delay time is 2 seconds）, treat that the anti-phase input terminal voltage of the voltage comparator C of delay capacitor C12 supply is little In the positive input voltage of voltage comparator C, voltage comparator C output separating brake judges signal（High level）, metal-oxide-semiconductor Q6 leads Logical, circuit structure is simple, easily realizes, and it is reliable convenient to control.
As the feasible scheme of the present invention, as shown in figure 13, divide-shut brake signal detection circuit 6-2 include photo-coupler U2, PMOS Q8, NMOS tube Q9 and delay capacitor C12, photo-coupler U2 includes luminous organ and light-receiving device, PMOS Q8 and NMOS tube Q9 connects, and the drain electrode of PMOS Q8 connects the outfan VCC3 forcing disjunction power supply circuits 6-1, and the source electrode of PMOS Q8 connects The drain electrode of NMOS tube Q9, forms a signal output part OUT between PMOS Q8 and NMOS tube Q9, the source electrode of NMOS tube Q9 connects Delay capacitor C12 one end is simultaneously grounded, and delay capacitor C12 simultaneously connects a resistance R24, and PMOS Q8 grid connects NMOS tube Q9 grid Pole, PMOS Q8 grid and NMOS tube Q9 grid junction point are public control end, and this public control end connects delay capacitor C12 mono- End（The delay capacitor C12 other end is grounded）, go here and there between this public control end and the outfan VCC3 forcing disjunction power supply circuits 6-1 The light-receiving device of connection photo-coupler U2.Point/the defeated A in switching voltage signal detection end go out for switching voltage signal when, photo-coupler U2 Luminous organ light, the conducting of the light-receiving device of photo-coupler U2, charge to delay capacitor C12, then PMOS Q8 grid and NMOS tube Q9 grid input high level, PMOS Q8 is ended, and NMOS tube Q9 turns on, then signal output part OUT is grounded through NMOS tube Q9, signal Outfan OUT is output as low level；Point/the defeated A in switching voltage signal detection end go out for separating brake voltage signal when, point/close a floodgate electricity The voltage of pressure signal detection end A is reduced to 0, and the luminous organ of photo-coupler U2 does not light, the light-receiving device cut-off of photo-coupler U2, time delay So that PMOS Q8 grid and the temporary transient input high level of NMOS tube Q9 grid, signal output part OUT is temporarily defeated for electric capacity C12 electric discharge Go out low level, default delay time is determined by delay capacitor C12, when delay capacitor C12 discharges into certain value, PMOS Q8 grid Pole and NMOS tube Q9 grid are low level, and PMOS Q8 turns on, and NMOS tube Q9 is ended, then signal output part OUT is through PMOS Q8 Access the outfan VCC3 forcing disjunction power supply circuits 6-1, signal output part OUT is output as high level.
As shown in figure 14, divide-shut brake signal detection circuit 6-2 can also be：Using photo-coupler U2, NPN type triode Q10 and delay capacitor C12 is constituted；Point/the defeated A in switching voltage signal detection end go out for switching voltage signal when, photo-coupler U2 Luminous organ light, the conducting of the light-receiving device of photo-coupler U2, charge to delay capacitor, then the base electrode of NPN type triode Q10 is defeated Enter high level, NPN type triode Q10 turns on, then signal output part OUT is grounded through NPN type triode Q10, signal output part OUT It is output as low level；Point/the defeated A in switching voltage signal detection end go out for separating brake voltage signal when, point/switching voltage signal detection The voltage of end A is reduced to 0, and the luminous organ of photo-coupler U2 does not light, the light-receiving device cut-off of photo-coupler U2, and delay capacitor C12 is put So that signal output part OUT temporarily exports low level, default delay time is determined electricity by delay capacitor C12, treats delay capacitor After C12 electric discharge terminates, the base electrode input low level of NPN type triode Q10, NPN type triode Q10 is ended, then signal output End OUT accesses the outfan VCC3 forcing disjunction power supply circuits 6-1 through resistance R25, and signal output part OUT is output as high level.
In this specific embodiment, described contact state testing circuit includes catalyst auxiliary contact 33, amplifier subtraction electricity Road 6-3-1, bleeder circuit three 6-3-3 and detection resistance R16, described catalyst auxiliary contact 33 and probe of contactor synchronously close Close and disconnect；Described detection resistance R16 two ends are connected to the in-phase input end of described amplifier subtraction circuit 6-3-1 and anti-phase On input, described amplifier subtraction circuit 6-3-1 is used for the differential voltage conversion electricity in couples at electric for detection resistance R16 two ends Pressure, if the junction point that detection resistance R16 is connected with described amplifier subtraction circuit 6-3-1 in-phase input end is homophase junction point B, if The junction point that detection resistance R16 is connected with described amplifier subtraction circuit 6-3-1 inverting input is anti-phase junction point C；Described point The input of volt circuit three 6-3-3 connects the outfan forcing disjunction power supply circuits 6-1, and the of described bleeder circuit three 6-3-3 One outfan is connected on described homophase junction point B, second outfan of bleeder circuit three 6-3-3 and described auxiliary contact 33 1 End connects and is grounded, and the other end of described auxiliary contact 33 is connected on described anti-phase junction point C；When auxiliary contact 33 disconnects Described detection resistance R16 both end voltage is 0, and the outfan corresponding output contact of described amplifier subtraction circuit 6-3-1 disconnects and judging Signal, contact disconnects and judges signal as low level, and when auxiliary contact 33 closes, detection resistance R16 two ends form voltage, described The outfan of amplifier subtraction circuit 6-3-1 corresponding output contact closure judges signal, and contact closure judges signal as high level.
Wherein, amplifier subtraction circuit 6-3-1 includes integrated transporting discharging B, resistance R11, resistance R12, resistance R13 and resistance R15；Integrated transporting discharging B normal phase input end connects resistance R11, resistance R12；Resistance R11 one end is just connecting resistance R12, integrated transporting discharging B Phase input, the resistance R11 other end is grounded；Resistance R12 one end connects resistance R11, integrated transporting discharging B normal phase input end, resistance R12 Other end connecting detection resistance R16, resistance R17, resistance R18（This end of resistance R12 is that the positive of amplifier subtraction circuit 6-3-1 is defeated Enter end）；Integrated transporting discharging B inverting input connects resistance R15, resistance R13；Resistance R15 one end connects integrated transporting discharging B anti-phase input End, resistance R13, the resistance R15 other end connects integrated transporting discharging B outfan；Resistance R13 one end connects resistance R15, integrated transporting discharging B Inverting input, resistance R13 other end connecting detection resistance R16, catalyst auxiliary contact（This end of resistance R13 is amplifier subtraction The inverting input of circuit 6-3-1）.Described bleeder circuit three 6-3-3 is in series by resistance R17 and resistance R18, resistance R17 One end connects the outfan forcing disjunction power supply circuits 6-1（This end of resistance R17 is bleeder circuit three 6-3-3 input）, resistance The R17 other end connects resistance R18, amplifier subtraction circuit 6-3-1 normal phase input end, detection resistance R16（This end of resistance R17 is to divide First outfan of volt circuit three 6-3-3）；Resistance R18 one end connects resistance R17, and the resistance R18 other end is grounded and contacts Device auxiliary contact（This end of resistance R18 is bleeder circuit three 6-3-3 the second outfan）；Catalyst auxiliary contact 33 one end connects electricity Resistance R18, catalyst auxiliary contact 33 other end connecting detection resistance R16；Detection resistance R16 one end connects amplifier subtraction circuit 6- The normal phase input end of 3-1, the detection resistance R16 other end connects the inverting input of amplifier subtraction circuit 6-3-1.
As shown in figure 11, described pressure disjunction power supply circuits 6-1 can be for taking to the line of power supply on catalyst dynamic/static contact Voltage feed circuit, accesses the power supply of 380V, carries out blood pressure lowering through transformator T1（It is 18V in specific embodiment）, then reconnect Rectifier bridge D9（Rectification）With diode D10（Filtering）Formation is output as low-voltage DC, forces disjunction power supply circuits 6-1 also conduct Divide-shut brake signal detection circuit 6-2, the working power of contact state testing circuit 6-3.Described pressure disjunction power supply circuits 6-1 Can be for accessing divide-shut brake power supply circuits then through capacitances to supply power, as shown in figure 12, the outfan of divide-shut brake power supply circuits is through becoming Depressor T2 carries out blood pressure lowering（It is 18V in specific embodiment）, then it is output as unidirectional current, rectifier bridge through reconnecting rectifier bridge D9 rectification The outfan of D9 connects storage capacitor C13（Storage capacitor C13 can be super capacitor or conventional capacitive）And diode The anode of D10, the storage capacitor C13 other end is grounded, and the negative electrode of diode D10 is the outfan forcing disjunction power supply circuits, defeated Go out low-voltage DC；In normal combined floodgate, divide-shut brake power supply circuits are to force disjunction circuit to be powered after treatment, and are storage Can electric capacity C13 charge, in separating brake, divide-shut brake power supply circuits power-off, storage capacitor C13 is powered as power supply.

Claims (9)

1. a kind of permanent magnetism type contactor with disjunction protection device, including catalyst body and control circuit, catalyst body Include casing, permanent magnet operating device and contact apparatus, contact apparatus include moving contact and the static contact of corresponding matching, forever Magnetic-type operation device includes controlling the dynamic iron core of dynamic and static Contact Breaking/Making Operations, the permanent magnetism coil mechanism with dynamic iron core corresponding matching, and Drive the detached reaction spring of dynamic and static contact, permanent magnetism coil mechanism include bobbin, divide-shut brake magnet exciting coil, yoke and Permanent magnet it is characterised in that：Forcible tripping device is additionally provided with described casing, forcible tripping device includes can deformation energy storage Force disjunction spring, force disjunction spring to have a deformation driving release end, this deformation drives release end to be connected with and forcing to divide The dynamic and static contact detached pressure disjunction jump cap of "on" position can be driven when disconnected spring releases energy, force disjunction jump cap to correspond to It is combined with the latching device forcing disjunction spring for locking and release, latching device has can join with forcing disjunction jump cap lock Close with realize force disjunction spring latch at the lock end of energy storage state, and drive lock end with force disjunction jump cap thread off with The triggering end of disjunction spring is forced in release, and the triggering end of latching device connects triggering device, and described pressure disjunction spring is compression The stage clip of energy storage, stage clip, between dynamic iron core and permanent magnetism coil mechanism, is forced disjunction jump cap to be connected to and is forced disjunction spring Deformation drives on release end, forces disjunction jump cap to be located at below dynamic iron core, and can pushing tow when forcing disjunction spring to release energy Dynamic iron core moves to open position by closing position, and described pressure disjunction spring abuts one end with respect to forcing disjunction jump cap The other end is fixedly supported in casing, forces disjunction jump cap to be provided with driving and forces the compression of disjunction jump cap to force disjunction spring energy-storage Spring energy-storage actuating arm.
2. according to claim 1 the permanent magnetism type contactor with disjunction protection device it is characterised in that：Described pressure disjunction is jumped Cap is provided with least two locks being uniformly distributed circumferentially and refers to, and latching device includes referring to the latching device list of corresponding matching with each lock Unit, latching device unit includes the pedestal being arranged in casing, and is pivoted on snap close piece on pedestal, tripping part, Tripping part has trip positions and latched position, tripping part be provided with and force disjunction jump cap be linked with drive tripping part from Trip positions turn to the latch actuation portion of latched position, and refer to, with lock, the locking stopper section that locking/dropout coordinates, and locking stops On the upper swing arm of tripping part, snap close piece is arranged on described tripping part rear to stopper, and snap close piece includes correspondence and is journaled into jump The rotatable closing piece of swing arm position on fastener, rotatable closing piece has extended downwardly coupled arm, the rotatable lock of described snap close piece Block be provided with for tripping part in trip positions against dropout bearing surface, the lock-bit leaning in latched position for tripping part Clamp, and drive snap close piece rotation to realize tripping part and lock the dropout trigger arm referring to thread off, the upper swing arm of described tripping part It is provided with and is in, for tripping part, the lock-bit window snapping in for lock-bit clamp during trip positions, be provided with for tripping part on the upside of lock-bit window It is in when being clasped, be in the locked position with lock-bit clamp during trip positions and lock-bit clamp is against the baffle plate coordinating, in institute Stating to be provided between the bottom moved end of tripping part and the bottom swing arm of snap close piece drives the upper swing arm of tripping part to be close to snap close piece Linkage torsion spring, linkage torsion spring is pivoted on pedestal, and the side torsion spring arm of linkage torsion spring is connected to the bottom moved end of tripping part, The opposite side torsion spring arm of linkage torsion spring is connected on the coupled arm of snap close piece.
3. according to claim 2 the permanent magnetism type contactor with disjunction protection device it is characterised in that：The back of the body of described tripping part Face is extended with pivot joint ear, and the upper swing arm of tripping part is provided with lock and refers to latch-up window, and described latch actuation portion is to refer to close located at lock Latch actuation projection in lock window, latch actuation projection is in extend and stretch out described lock towards pressure disjunction jump cap side to refer to close Lock window, described latch actuation projection and the lock forcing disjunction jump cap refer to counter stopper and realize to drive tripping part from trip positions Turn to latched position, described locking stopper section is the block on the upside of latch-up window.
4. according to claim 3 the permanent magnetism type contactor with disjunction protection device it is characterised in that：Described latch actuation is convex Block is in towards forcing disjunction jump cap side to extend obliquely, and the downside that described lock refers to is provided with breach, and refers to lower wall in lock and formed Circular arc guide surface.
5. according to claim 3 the permanent magnetism type contactor with disjunction protection device it is characterised in that：Described lock refers to upper side It is provided with the inclined-plane extending to lock finger tip, this inclined-plane is that extending to lock obliquely away from lock finger tip one end refers to finger tip certainly.
6. according to claim 1 the permanent magnetism type contactor with disjunction protection device it is characterised in that：Described triggering device bag Magnetictrip and drive mechanism are included, the dynamic iron core of the magnetictrip triggering end through drive mechanism and latching device drives Connect；Described control circuit includes normal disjunction control circuit and forces disjunction control circuit,
Described normal disjunction control circuit, for controlling divide-shut brake magnet exciting coil forward direction break-make and reverse break-make, thus realize connecing Tentaculum divide-shut brake controls, and has point/switching voltage signal detection end in described normal disjunction control circuit, point/switching voltage believes The exportable switching voltage signal driving catalyst to close a floodgate in number test side, and the separating brake voltage signal driving catalyst separating brake；
Described pressure disjunction control circuit, for controlling the tripping coil break-make of magnetictrip, the trip line of magnetictrip To drive, the triggering end of latching device completes moving contact and static contact is forced to thread off for circle conducting, described pressure disjunction control circuit bag Include pressure disjunction power supply circuits, divide-shut brake signal detection circuit, contact state testing circuit and trip coil on-off control Circuit, described pressure disjunction power supply circuits export unidirectional current, and pressure disjunction power supply circuits are trip coil ON-OFF control circuit Power supply, has an on and off switch in trip coil ON-OFF control circuit,
Described contact state testing circuit produces contact disjunction when catalyst moving contact and static contact disconnect and judges signal, contact Disjunction judges signal as controlling the pick-off signal that in trip coil ON-OFF control circuit, on and off switch disconnects, and contact state is examined Slowdown monitoring circuit produces contact closure in catalyst moving contact and static contact closure and judges signal, and contact closure judges signal as tactile Send out the Continuity signal of on and off switch conducting in electrical apparatus release coil switch control circuit, the signal output part of contact state testing circuit It is connected formation signal operating circuit with the control end of on and off switch in trip coil ON-OFF control circuit, in signal operating circuit It is serially connected with signal circuit controlling switch, during described signal circuit controlling switch cut-off, signal operating circuit disconnects, described signalman Make on and off switch in trip coil ON-OFF control circuit when circuit disconnects to be off,
The control end of described signal circuit controlling switch is connected with the signal output part of divide-shut brake signal detection circuit, described division Lock signal detection circuit receives the output signal at described point/switching voltage signal detection end, and divide-shut brake signal detection circuit receives To described point/switching voltage signal detection end switching voltage signal when control the cut-off of described signal circuit controlling switch, division Lock signal detection circuit triggers described signal circuit when receiving the separating brake voltage signal at described point/switching voltage signal detection end Controlling switch turns on.
7. according to claim 6 the permanent magnetism type contactor with disjunction protection device it is characterised in that：Described divide-shut brake signal Circuit for detecting includes bleeder circuit one, is in series with bleeder circuit two, delay capacitor and the voltage comparator of photo-coupler,
The input of described bleeder circuit one connects the outfan forcing disjunction power supply circuits, and the first of described bleeder circuit one is defeated Go out the in-phase input end that end connects voltage comparator, the second output head grounding of bleeder circuit one, bleeder circuit one is used for voltage The in-phase input end partial pressure of comparator, bleeder circuit one provides reference voltage for the in-phase input end of voltage comparator,
First outfan of described bleeder circuit two connects delay capacitor one end, bleeder circuit 2 first outfan and delay capacitor The common port connecting is connected on the inverting input of voltage comparator, and the second outfan of bleeder circuit two connects delay capacitor The other end and be grounded, bleeder circuit two be used for voltage comparator inverting input partial pressure, bleeder circuit two be voltage ratio relatively The inverting input of device provides voltage to be measured,
The voltage to be measured of inverting input and the reference voltage of in-phase input end are compared by described voltage comparator, described The voltage to be measured of voltage comparator inverting input be export during higher than the high-voltage value of described reference voltage level voltage to be measured low Level signal, the described signal circuit controlling switch cut-off in voltage comparator output low level signal, in described voltage ratio relatively The voltage to be measured of device inverting input is to be output as high level letter during less than the low voltage value of described reference voltage level voltage to be measured Number, trigger described signal circuit controlling switch conducting in voltage comparator output high level signal,
Described photo-coupler is connected on the input of bleeder circuit two and forces between disjunction power supply circuits outfan, photo-coupler For according to point/output signal at switching voltage signal detection end controls the input of bleeder circuit two and forces disjunction to be powered electricity Break-make between the outfan of road,
Photo-coupler receives point/the switching voltage signal at switching voltage signal detection end when, control the input of bleeder circuit two Turn between end and pressure disjunction power supply circuits outfan, and then so that described delay capacitor is charged, and described voltage comparator The voltage to be measured of inverting input input is described high-voltage value voltage to be measured；
Photo-coupler receives point/the separating brake voltage signal at switching voltage signal detection end when, control the input of bleeder circuit two Hold and force the separated of disjunction power supply circuits outfan, and then described delay capacitor discharges and is formed as described voltage comparator Inverting input provides the default delay time of described high-voltage value voltage to be measured, and after default delay time, described voltage ratio is relatively The inverting input input described low voltage value voltage to be measured of device.
8. according to claim 6 or 7 permanent magnetism type contactor with disjunction protection device it is characterised in that：Described contact shape State testing circuit includes catalyst auxiliary contact, amplifier subtraction circuit, bleeder circuit three and detection resistance, described catalyst Auxiliary contact and probe of contactor synchronizing close and disconnection,
Described detection resistance two ends are connected on the in-phase input end and inverting input of described amplifier subtraction circuit, if inspection The junction point that measuring resistance is connected with described amplifier subtraction circuit in-phase input end is homophase junction point, and described amplifier subtraction circuit is used In the differential voltage at electric for detection resistance two ends is converted into voltage-to-ground, if detection resistance is anti-phase defeated with described amplifier subtraction circuit The junction point entering end connection is anti-phase junction point,
The input of described bleeder circuit three connects the outfan forcing disjunction power supply circuits, and the first of described bleeder circuit three is defeated Go out end to be connected on described homophase junction point, the second outfan of bleeder circuit three is connected and connects with described auxiliary contact one end Ground, the other end of described auxiliary contact is connected on described anti-phase junction point,
When auxiliary contact disconnects, described detection resistance both end voltage is 0, the corresponding output of outfan of described amplifier subtraction circuit Contact disconnects and judges signal, and contact disconnects and judges signal as low level, and when auxiliary contact closes, detection resistance two ends form electricity Pressure, the outfan corresponding output contact closure of described amplifier subtraction circuit judges signal, and contact closure judges signal as high level.
9. according to claim 6 the permanent magnetism type contactor with disjunction protection device it is characterised in that：Described pressure disjunction supplies Circuit is the line voltage power supply circuits taking to power supply on catalyst dynamic/static contact, force disjunction power supply circuits through blood pressure lowering, rectification, Export unidirectional current after filtering, force disjunction power supply circuits also as divide-shut brake signal detection circuit, contact state testing circuit Working power.
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CN105529207B (en) * 2016-01-27 2017-09-22 华中科技大学 A kind of electromagnetic type high voltage isolator
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CN107204253B (en) * 2016-03-18 2019-04-19 比亚迪股份有限公司 A kind of relay
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WO2018036904A1 (en) * 2016-08-26 2018-03-01 Abb Schweiz Ag Switch and method for disconnecting a switch
CN107068492B (en) * 2017-05-15 2019-06-11 山西埃斯曼电气科技有限公司 A kind of permanent magnet contactor for preventing from being attracted because pressing acts on
CN113963966B (en) * 2020-07-20 2022-09-06 上海良信电器股份有限公司 Separating brake switch and remote circuit breaker

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