CN204992537U - Motor and pump class contactless relay analog circuit protector - Google Patents
Motor and pump class contactless relay analog circuit protector Download PDFInfo
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- CN204992537U CN204992537U CN201520826091.4U CN201520826091U CN204992537U CN 204992537 U CN204992537 U CN 204992537U CN 201520826091 U CN201520826091 U CN 201520826091U CN 204992537 U CN204992537 U CN 204992537U
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Abstract
The utility model discloses motor and pump class contactless relay analog circuit protector, wherein protector power isolation contactless relay adopts high countervoltage triode or compound triode and bridge rectifier to constitute alternating current switch, high countervoltage triode or the emitter control of compound triode base by optical coupling isolator, optical coupling isolator's collector supply can be provided by power secondary winding or solitary isolation power, control signal makes protector power isolation contactless relay switch on the contactor of control forceful electric power circuit through optical coupling isolation drive triode, design the overall arrangement of planning circuit board and contactless relay circuit of protector power isolation and motor protector can be lumped together, can reduce circuit face sum of products volume. Have contactless, small, safe and reliable, the fields such as motor protection of being applied to that can be extensive.
Description
Technical field:
The utility model relates to pump class protector, motor protector, particularly motor and pump class contactless relay analog protection circuit device.
Technical background:
Existing solid-state relay also claims contactless relay or noncontacting switch, because the reasons such as version, volume, price are only applicable to some low-voltage electrical apparatus control field, inapplicable motor protector control device.Conventional Miniature direct current relay is all adopted in current all kinds of motor protector; the A.C. contactor controlling forceful electric power is removed with the contact of Miniature direct current relay; shortcoming be have contact, the life-span is short, not easily layout, operational environment are restricted volume large circuit board; eight, the nineties once adopted controllable silicon to replace relay in the simple and easy protector of motor; because there is the equipment that multiple relay can not be replaced to control several functions; and all forceful electric power light current circuit positions are all with high voltage; there is hidden danger, in the last few years little Bian similar control mode.
Summary of the invention
The purpose of this utility model invents a kind of motor and pump class contactless relay analog protection circuit device for above-mentioned defect, Bian high countervoltage triode or compound transistor and bridge rectifier composition alternating-current switch, high countervoltage triode or compound transistor base stage are controlled by the emitter of optical coupling isolator, the collector supply of optical coupling isolator can be provided by transistor collector, also can be provided by independent insulating power supply, control signal drives triode to make the conducting of protector isolated from power contactless relay control the contactor of forceful electric power circuit through optical coupling isolator, circuit of the present invention is simple, use protector stabilized voltage power supply or Switching Power Supply and realize optical coupling isolator and power transformer isolation dual resisteance, guarantee the control that motor protector is safe and reliable, and design planning circuit-board laying-out of protector isolated from power contactless relay circuit and motor protector can being lumped together, board area and volume can be reduced.
The technical solution of the utility model is motor and pump class contactless relay analog protection circuit device, it is characterized in that motor and pump class contactless relay analog protection circuit device are made up of together with analog circuit motor protector or pump class protector protector isolated from power contactless relay DJ, an insulating power supply transformer is connected in series in the circuit of power voltage step down capacitor, insulating power supply transformer secondary winding exports and provides insulating power supply through stabilized voltage power supply to the collector electrode of optical coupling isolator in isolated from power contactless relay, realize optical coupling isolator and power transformer isolation dual resisteance, the current signal of current transformer amplifies combiner circuit through three-phase current, circuit or current foldback circuit or break phase and three-phase imbalance protective circuit output protection control signal when starting keeps away again, protector isolated from power contactless relay DJ action is made to reach control to A.C. contactor, when wherein starting keeps away, circuit is only for pump class protector, its circuit structure is A phase power supply a, B phase power supply b is connected A.C. contactor KM with C phase power supply c, A phase power supply a1 connects insulating power supply transformer winding TL1 and connects motor M through A phase current mutual inductor LA, B phase power supply b1 connects motor M through B phase current mutual inductor LB, C phase power supply c1 connects power voltage step down capacitor CD and connects motor M through C phase current mutual inductor LC, the other end of power voltage step down capacitor CD connects the input of stabilized voltage power supply WD1, the other end of an insulating power supply transformer winding TL1 connects another input of stabilized voltage power supply WD1, insulating power supply transformer secondary winding switching insulating power supply WD2, insulating power supply positive pole VD2 contact resistance R4, the other end of resistance R4 connects the collector electrode of optical coupling isolator Q, the emitter contact resistance R5 of optical coupling isolator Q and the base stage of triode BG, the other end of insulating power supply negative pole VD2 contact resistance R5, the emitter of triode BG, the positive pole of diode D3 and diode D4 positive pole, the collector electrode of triode BG connects the negative pole of diode D1 and the negative pole of diode D3, the negative pole of the cathode connecting diode D3 of diode D1 goes to connect as electrical isolation contactless relay DJ output and starts An Button QM and stop button TM, the negative pole of the cathode connecting diode D4 of diode D2 removes to connect the other end and A.C. contactor KM coil that start An Button QM as another output of protector isolated from power contactless relay DJ, the other end of A.C. contactor KM coil connects AC power a, the other end of stop button TM connects AC power c, the coil two ends of current transformer LA, the coil two ends of the coil two ends summation current transformer LC of current transformer LB connect three-phase current respectively and amplify combiner circuit Q1, the Shu Chu Fen Do that three-phase current amplifies combiner circuit Q1 connects circuit BS when starting keeps away, current foldback circuit GZ and mutually disconnected and three-phase imbalance protective circuit PH, the output of starting circuit BS when keeping away connects the positive pole of diode D5, the output of current foldback circuit GZ connects the negative pole of diode D6, output that is mutually disconnected and three-phase imbalance protective circuit PH connects the negative pole of diode D7, the positive pole of diode D6 and the positive pole contact resistance R3 of diode D7, the other end of resistance R3 connects the negative pole of diode D5 and the negative pole of diode D8, the positive pole contact resistance R1 of diode D8 and the light-emitting diode positive pole of optical coupling isolator Q2, the other end of resistance R1 connects positive supply VD1, the negative pole contact resistance R2 of the light-emitting diode of optical coupling isolator Q2, the other end of resistance R2 connects power supply common port VE1.
The utility model motor and pump class contactless relay analog protection circuit device Bian high countervoltage triode or compound transistor and bridge rectifier composition alternating-current switch, high countervoltage triode or compound transistor base stage are controlled by the emitter of optical coupling isolator, the collector supply of optical coupling isolator can be provided by transistor collector, also can be provided by Switching Power Supply secondary winding or independent insulating power supply, control signal drives triode to make the conducting of protector isolated from power contactless relay control the contactor of forceful electric power circuit through light-coupled isolation, have contactless, volume is little, safe and reliable, the field such as motor protecting device and electric automatization control can be widely used in.
Accompanying drawing explanation
Fig. 1, motor and pump class contactless relay analog protection circuit device circuit theory schematic diagram
MBH analog circuit motor protector in figure, aA phase power supply, bB phase power supply, cC phase power supply, a1A phase power supply, b1B phase power supply, c1C phase power supply, M motor, KM A.C. contactor, QM starts Ans Button, TM stop button, T insulating power supply transformer, TL1 insulating power supply transformer winding, TL2 insulating power supply transformer secondary winding, CD power voltage step down capacitor, WD1-WD2 stabilized voltage power supply, VD positive supply, VC negative supply, VE power supply common port, VD1 insulating power supply positive pole, VD2 insulating power supply negative pole, LAA phase current mutual inductor, LBB phase current mutual inductor, LCC phase current mutual inductor, Q1 three-phase current amplifies combiner circuit, BS starts circuit when keeping away, GZ current foldback circuit, the disconnected phase of PH and three-phase imbalance protective circuit, DJ protector isolated from power contactless relay, R1-R5 resistance, D1-4D8 diode, BG triode, Q optical coupling isolator.
Embodiment
Fig. 1 is motor and pump class contactless relay analog protection circuit device circuit theory schematic diagram, circuit working principle is that pressure is started An Button QM, A.C. contactor KM adhesive, motor M operates, A phase current mutual inductor LA, the current signal of B phase current mutual inductor LB and C phase current mutual inductor LC amplifies combiner circuit through three-phase current, when keeping away respectively through current foldback circuit or break phase and three-phase imbalance protective circuit or starting again, circuit exports, when motor M occur overload flow or disconnected mutually and three-phase imbalance time, current foldback circuit or mutually disconnected and three-phase imbalance protective circuit output low level, diode D6 or diode D7 moves the light-emitting diode positive pole of optical coupling isolator Q2 to low level through diode D8, triode BG turns off, A.C. contactor KM power-off, motor M stops.When starting keeps away, circuit is only for pump class protector; start circuit when keeping away when pumping motor starts and export high level, diode D8 negative pole high level during starting, over-current and-load protection is inoperative; start circuit output low level when keeping away after pumping motor works well, over-current and-load defencive function recovers.Embodiment is that protector isolated from power contactless relay DJ forms relay non-contact circuit together with analog circuit motor protector or pump class protector, an insulating power supply transformer is connected in series in the circuit of power voltage step down capacitor, insulating power supply transformer secondary winding exports and provides insulating power supply through stabilized voltage power supply to the collector electrode of optical coupling isolator in isolated from power contactless relay, realize optical coupling isolator and power transformer isolation dual resisteance, the current signal of current transformer amplifies combiner circuit through three-phase current, circuit or current foldback circuit or break phase and three-phase imbalance protective circuit output protection control signal when starting keeps away again, protector isolated from power contactless relay DJ action is made to reach control to A.C. contactor, when wherein starting keeps away, circuit is only for pump class protector.Its circuit structure is A phase power supply a, B phase power supply b is connected A.C. contactor KM with C phase power supply c, A phase power supply a1 connects insulating power supply transformer winding TL1 and connects motor M through A phase current mutual inductor LA, B phase power supply b1 connects motor M through B phase current mutual inductor LB, C phase power supply c1 connects power voltage step down capacitor CD and connects motor M through C phase current mutual inductor LC, the other end of power voltage step down capacitor CD connects the input of stabilized voltage power supply WD1, the other end of an insulating power supply transformer winding TL1 connects another input of stabilized voltage power supply WD1, insulating power supply transformer secondary winding switching insulating power supply WD2, insulating power supply positive pole VD2 contact resistance R4, the other end of resistance R4 connects the collector electrode of optical coupling isolator Q2, the emitter contact resistance R5 of optical coupling isolator Q2 and the base stage of triode BG, the other end of insulating power supply negative pole VD2 contact resistance R5, the emitter of triode BG, the positive pole of diode D3 and diode D4 positive pole, the collector electrode of triode BG connects the negative pole of diode D1 and the negative pole of diode D3, the negative pole of the cathode connecting diode D3 of diode D1 goes to connect as protector isolated from power contactless relay DJ output and starts An Button QM and stop button TM, the negative pole of the cathode connecting diode D4 of diode D2 removes to connect the other end and A.C. contactor KM coil that start An Button QM as another output of protector isolated from power contactless relay DJ, the other end of A.C. contactor KM coil connects AC power a, the other end of stop button TM connects AC power c, the coil two ends of current transformer LA, the coil two ends of the coil two ends summation current transformer LC of current transformer LB connect three-phase current respectively and amplify combiner circuit Q1, the Shu Chu Fen Do that three-phase current amplifies combiner circuit Q1 connects circuit BS when starting keeps away, current foldback circuit GZ and mutually disconnected and three-phase imbalance protective circuit PH, the output of starting circuit BS when keeping away connects the positive pole of diode D5, the output of current foldback circuit GZ connects the negative pole of diode D6, output that is mutually disconnected and three-phase imbalance protective circuit PH connects the negative pole of diode D7, the positive pole of diode D6 and the positive pole contact resistance R3 of diode D7, the other end of resistance R3 connects the negative pole of diode D5 and the negative pole of diode D8, the positive pole contact resistance R1 of diode D8 and the light-emitting diode positive pole of optical coupling isolator Q2, the other end of resistance R1 connects positive supply VD1, the negative pole contact resistance R2 of the light-emitting diode of optical coupling isolator Q2, the other end of resistance R2 connects power supply common port VE1.
Claims (1)
1. motor and pump class contactless relay analog protection circuit device, it is characterized in that being made up of together with analog circuit motor protector or pump class protector protector isolated from power contactless relay DJ, an insulating power supply transformer is connected in series in the circuit of power voltage step down capacitor, insulating power supply transformer secondary winding exports and provides insulating power supply through stabilized voltage power supply to the collector electrode of optical coupling isolator in isolated from power contactless relay, realize optical coupling isolator and power transformer isolation dual resisteance, the current signal of current transformer amplifies combiner circuit through three-phase current, circuit or current foldback circuit or break phase and three-phase imbalance protective circuit output protection control signal when starting keeps away again, protector isolated from power contactless relay DJ action is made to reach control to A.C. contactor, when wherein starting keeps away, circuit is only for pump class protector, its circuit structure is A phase power supply a, B phase power supply b is connected A.C. contactor KM with C phase power supply c, A phase power supply a1 connects insulating power supply transformer winding TL1 and connects motor M through A phase current mutual inductor LA, B phase power supply b1 connects motor M through B phase current mutual inductor LB, C phase power supply c1 connects power voltage step down capacitor CD and connects motor M through C phase current mutual inductor LC, the other end of power voltage step down capacitor CD connects the input of stabilized voltage power supply WD1, the other end of an insulating power supply transformer winding TL1 connects another input of stabilized voltage power supply WD1, insulating power supply transformer secondary winding switching insulating power supply WD2, insulating power supply positive pole VD2 contact resistance R4, the other end of resistance R4 connects the collector electrode of optical coupling isolator Q, the emitter contact resistance R5 of optical coupling isolator Q and the base stage of triode BG, the other end of insulating power supply negative pole VD2 contact resistance R5, the emitter of triode BG, the positive pole of diode D3 and diode D4 positive pole, the collector electrode of triode BG connects the negative pole of diode D1 and the negative pole of diode D3, the negative pole of the cathode connecting diode D3 of diode D1 goes to connect as electrical isolation contactless relay DJ output and starts An Button QM and stop button TM, the negative pole of the cathode connecting diode D4 of diode D2 removes to connect the other end and A.C. contactor KM coil that start An Button QM as another output of protector isolated from power contactless relay DJ, the other end of A.C. contactor KM coil connects AC power a, the other end of stop button TM connects AC power c, the coil two ends of current transformer LA, the coil two ends of the coil two ends summation current transformer LC of current transformer LB connect three-phase current respectively and amplify combiner circuit Q1, the output that three-phase current amplifies combiner circuit Q1 connects circuit BS when starting keeps away respectively, current foldback circuit GZ and mutually disconnected and three-phase imbalance protective circuit PH, the output of starting circuit BS when keeping away connects the positive pole of diode D5, the output of current foldback circuit GZ connects the negative pole of diode D6, output that is mutually disconnected and three-phase imbalance protective circuit PH connects the negative pole of diode D7, the positive pole of diode D6 and the positive pole contact resistance R3 of diode D7, the other end of resistance R3 connects the negative pole of diode D5 and the negative pole of diode D8, the positive pole contact resistance R1 of diode D8 and the light-emitting diode positive pole of optical coupling isolator Q2, the other end of resistance R1 connects positive supply VD1, the negative pole contact resistance R2 of the light-emitting diode of optical coupling isolator Q2, the other end of resistance R2 connects power supply common port VE1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520826091.4U CN204992537U (en) | 2015-10-16 | 2015-10-16 | Motor and pump class contactless relay analog circuit protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520826091.4U CN204992537U (en) | 2015-10-16 | 2015-10-16 | Motor and pump class contactless relay analog circuit protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204992537U true CN204992537U (en) | 2016-01-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520826091.4U Expired - Fee Related CN204992537U (en) | 2015-10-16 | 2015-10-16 | Motor and pump class contactless relay analog circuit protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204992537U (en) |
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2015
- 2015-10-16 CN CN201520826091.4U patent/CN204992537U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: An Lihu Inventor after: Jie Guoan Inventor before: Jie Guoan |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20170210 Address after: 434302 Jingzhou city of Hubei province Gongan County port town Dongyue View Road No. 23 Patentee after: Li Zibing Address before: 325200 Ruian City, south of the Yangtze River in the city of riverside Street standard factory building light industrial zone, the first floor of the ninth floor of the first floor of the Thai Electrical Appliance Co., Ltd., four Patentee before: Jie Guoan |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160120 Termination date: 20171016 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |