CN204578408U - Three phase electric machine positive phase sequence safe starting control device - Google Patents
Three phase electric machine positive phase sequence safe starting control device Download PDFInfo
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- CN204578408U CN204578408U CN201520332458.7U CN201520332458U CN204578408U CN 204578408 U CN204578408 U CN 204578408U CN 201520332458 U CN201520332458 U CN 201520332458U CN 204578408 U CN204578408 U CN 204578408U
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Abstract
Three phase electric machine positive phase sequence safe starting control device, belongs to Motor Control Field, and the utility model is the phase sequence incorrect problem causing accident when solving electric motor starting.The utility model comprises circuit breaker Q S1 and A.C. contactor KM1, and three phase electric machine M often leaves by A.C. contactor KM1 main contacts KM1-1 to be connected three phase mains three live wires with circuit breaker Q S1 successively; Also comprise circuit breaker Q S, start button SB1, stop button SB2, auxiliary relay K, CD4013 double D trigger, resistance R1 ~ R12, electric capacity C1, electrochemical capacitor C2, diode VD1 ~ VD5, voltage stabilizing didoe Vs1 ~ Vs3, NPN triode VT1, VT2, neon indicator HL1 ~ HL3; And provide working power by the circuit that A.C. contactor KM1 often leaves between main contacts KM1-1 and circuit breaker Q S1.
Description
Technical field
The utility model relates to the monitoring motor device whether positive phase sequence starts, and belongs to Motor Control Field.
Background technology
Three-phase circuit is by the circuit of three simple sinusoidal electromotives that frequency is identical, amplitude is identical, phase place differs 120 ° each other as power supply.Three-phase circuit because improving power 50% than single phase poaer supply in generating, steel 25% are saved than single-phase transmission of electricity in transmission of electricity, in distribution three-phase transformer than single-phase transformer economy and be convenient to access load, in the electric equipment of fortune, having the advantages such as structure is simple, cost is low, reliable, easy to maintenance and be applied widely in power, is the main supply power mode that current electric power system adopts.Three phase electric machine has strict requirement to phase sequence, if there is misconnection or other unusual conditions, will cause serious accident.
Summary of the invention
When the utility model object is to solve electric motor starting, the incorrect problem causing accident of phase sequence, provides a kind of three phase electric machine positive phase sequence safe starting control device.
Three phase electric machine positive phase sequence safe starting control device described in the utility model, comprise three-phase breaker QS1 and A.C. contactor KM1, three phase electric machine M often leaves by A.C. contactor KM1 main contacts KM1-1 to be connected three phase mains three live wires with three-phase breaker QS1 successively; And the A of three phase electric machine M corresponding connection live wire L1, B corresponding connection live wire L2, C corresponding connection live wire L3;
Also comprise single-phase circuit breaker QS2, start button SB1, stop button SB2, auxiliary relay K, CD4013 double D trigger, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, resistance R8, resistance R9, resistance R10, resistance R11, resistance R12, electric capacity C1, electrochemical capacitor C2, diode VD1, diode VD2, diode VD3, diode VD4, diode VD5, voltage stabilizing didoe Vs1, voltage stabilizing didoe Vs2, voltage stabilizing didoe Vs3, NPN triode VT1, NPN triode VT2, neon indicator HL1, neon indicator HL2 and neon indicator HL3, and provide working power by the circuit that A.C. contactor KM1 often leaves between main contacts KM1-1 and circuit breaker Q S1,
Live wire L1 is one end of contact resistance R1 and one end of resistance R2 simultaneously, the other end of resistance R1 connects one end of neon indicator HL1, the other end of resistance R2 connects the other end of neon indicator HL1 and the anode of diode VD1 simultaneously, one end of the negative electrode contact resistance R3 of diode VD1, the other end of resistance R3 connects 3 pin of CD4013 double D trigger and the negative electrode of voltage stabilizing didoe Vs1, the plus earth of voltage stabilizing didoe Vs1 simultaneously;
Live wire L2 is one end of contact resistance R4 and one end of resistance R5 simultaneously, the other end of resistance R4 connects one end of neon indicator HL2, the other end of resistance R5 connects the other end of neon indicator HL2 and the anode of diode VD2 simultaneously, one end of the negative electrode contact resistance R6 of diode VD2, the other end of resistance R6 connects 11 pin of CD4013 double D trigger and the negative electrode of voltage stabilizing didoe Vs2, the plus earth of voltage stabilizing didoe Vs2 simultaneously;
Live wire L3 is one end of contact resistance R7 and one end of resistance R8 simultaneously, the other end of resistance R7 connects one end of neon indicator HL3, the other end of resistance R8 connects the other end of neon indicator HL3 and the anode of diode VD3 simultaneously, one end of the negative electrode contact resistance R9 of diode VD3, the other end of resistance R9 connects one end of electric capacity C1 and the negative electrode of voltage stabilizing didoe Vs1, the plus earth of voltage stabilizing didoe Vs1 simultaneously; The other end of electric capacity C1 connects the anode of diode VD4 and one end of resistance R10, the other end ground connection of resistance R10 simultaneously; The negative electrode of diode VD4 is 4 pin of one end of contact resistance R11, CD4013 double D trigger, 7 pin and 10 pin simultaneously, the other end ground connection of resistance R11;
5 pin of CD4013 double D trigger connect+12V DC power supply, 6 pin of CD4013 double D trigger and 8 pin ground connection simultaneously; 1 pin of CD4013 double D trigger connects 9 pin;
One end of 13 pin contact resistance R12 of CD4013 double D trigger, the other end of resistance R12 connects the positive pole of electrochemical capacitor C2 and the base stage of NPN triode VT1 simultaneously, the emitter of NPN triode VT1 connects the base stage of NPN triode VT2, the collector electrode of NPN triode VT1 connects the anode of diode VD5, the collector electrode of NPN triode VT2 connects one end of auxiliary relay K coil, and the negative electrode of diode VD5 is connected+12V DC power supply with the other end of auxiliary relay K coil simultaneously; The negative electrode of electrochemical capacitor C2 and the emitter of NPN triode VT2 ground connection simultaneously;
Start button SB1, stop button SB2, auxiliary relay K normally opened contact and A.C. contactor KM1 coil are connected between live wire L3 and zero line N by single-phase circuit breaker QS2;
A.C. contactor KM1 often leaves the two ends that auxiliary contact are connected in parallel on start button SB1.
Advantage of the present utility model: three phase electric machine positive phase sequence safe starting control device described in the utility model arranges rationally, structure is simple, could start when guaranteeing that motor is positive phase sequence, and, be provided with reminding unit when start, first acousto-optic is reminded, and allows the unrelated person around motor leave in advance, ability starter motor after time delay a period of time, effectively can ensure personal security so again.
Accompanying drawing explanation
Fig. 1 is the control circuit figure of three phase electric machine positive phase sequence safe starting control device described in the utility model.
Embodiment
Embodiment one: present embodiment is described below in conjunction with Fig. 1, three phase electric machine positive phase sequence safe starting control device described in present embodiment, comprise three-phase breaker QS1 and A.C. contactor KM1, three phase electric machine M often leaves by A.C. contactor KM1 main contacts KM1-1 to be connected three phase mains three live wires with three-phase breaker QS1 successively; And the A of three phase electric machine M corresponding connection live wire L1, B corresponding connection live wire L2, C corresponding connection live wire L3;
Also comprise single-phase circuit breaker QS2, start button SB1, stop button SB2, auxiliary relay K, CD4013 double D trigger, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, resistance R8, resistance R9, resistance R10, resistance R11, resistance R12, electric capacity C1, electrochemical capacitor C2, diode VD1, diode VD2, diode VD3, diode VD4, diode VD5, voltage stabilizing didoe Vs1, voltage stabilizing didoe Vs2, voltage stabilizing didoe Vs3, NPN triode VT1, NPN triode VT2, neon indicator HL1, neon indicator HL2 and neon indicator HL3, and provide working power by the circuit that A.C. contactor KM1 often leaves between main contacts KM1-1 and circuit breaker Q S1,
Live wire L1 is one end of contact resistance R1 and one end of resistance R2 simultaneously, the other end of resistance R1 connects one end of neon indicator HL1, the other end of resistance R2 connects the other end of neon indicator HL1 and the anode of diode VD1 simultaneously, one end of the negative electrode contact resistance R3 of diode VD1, the other end of resistance R3 connects 3 pin of CD4013 double D trigger and the negative electrode of voltage stabilizing didoe Vs1, the plus earth of voltage stabilizing didoe Vs1 simultaneously;
Live wire L2 is one end of contact resistance R4 and one end of resistance R5 simultaneously, the other end of resistance R4 connects one end of neon indicator HL2, the other end of resistance R5 connects the other end of neon indicator HL2 and the anode of diode VD2 simultaneously, one end of the negative electrode contact resistance R6 of diode VD2, the other end of resistance R6 connects 11 pin of CD4013 double D trigger and the negative electrode of voltage stabilizing didoe Vs2, the plus earth of voltage stabilizing didoe Vs2 simultaneously;
Live wire L3 is one end of contact resistance R7 and one end of resistance R8 simultaneously, the other end of resistance R7 connects one end of neon indicator HL3, the other end of resistance R8 connects the other end of neon indicator HL3 and the anode of diode VD3 simultaneously, one end of the negative electrode contact resistance R9 of diode VD3, the other end of resistance R9 connects one end of electric capacity C1 and the negative electrode of voltage stabilizing didoe Vs1, the plus earth of voltage stabilizing didoe Vs1 simultaneously; The other end of electric capacity C1 connects the anode of diode VD4 and one end of resistance R10, the other end ground connection of resistance R10 simultaneously; The negative electrode of diode VD4 is 4 pin of one end of contact resistance R11, CD4013 double D trigger, 7 pin and 10 pin simultaneously, the other end ground connection of resistance R11;
5 pin of CD4013 double D trigger connect+12V DC power supply, 6 pin of CD4013 double D trigger and 8 pin ground connection simultaneously; 1 pin of CD4013 double D trigger connects 9 pin;
One end of 13 pin contact resistance R12 of CD4013 double D trigger, the other end of resistance R12 connects the positive pole of electrochemical capacitor C2 and the base stage of NPN triode VT1 simultaneously, the emitter of NPN triode VT1 connects the base stage of NPN triode VT2, the collector electrode of NPN triode VT1 connects the anode of diode VD5, the collector electrode of NPN triode VT2 connects one end of auxiliary relay K coil, and the negative electrode of diode VD5 is connected+12V DC power supply with the other end of auxiliary relay K coil simultaneously; The negative electrode of electrochemical capacitor C2 and the emitter of NPN triode VT2 ground connection simultaneously;
Start button SB1, stop button SB2, auxiliary relay K normally opened contact and A.C. contactor KM1 coil are connected between live wire L3 and zero line N by single-phase circuit breaker QS2;
A.C. contactor KM1 often leaves the two ends that auxiliary contact are connected in parallel on start button SB1.
Neon indicator HL1, neon indicator HL2 and neon indicator HL3 are along being arranged on same plectane clockwise or counterclockwise.
When three lamps are situation about arranging clockwise, if the wiring phase sequence of three phase electric machine M is positive phase sequence (A → B → C), then neon indicator HL1, neon indicator HL2 and neon indicator HL3 are along alternately luminous clockwise, form clockwise flow point luminance; If the wiring phase sequence of three phase electric machine M is negative phase sequence (C → B → A, C → A → B or B → A → C), then three lamps press the luminescence of counterclockwise flow point or the luminescence of cross flow one point.
When three lamps are that counterclockwise situation about arranging is identical with principle time clockwise, can judge whether the phase sequence of three phase electric machine M is positive phase sequence by the state of the moment luminescence stream of three pins.
Operation principle and process: close QS1, L1, L2, L3 provide 380V power supply; A phase power supply is after the step-down of resistance R1, R2 current limliting, again by VD1 rectification, form low voltage pulse signal, this low voltage pulse signal adds to 3 pin of CD4013 after R3 and Vs1 amplitude limit, shaping as clock pulse signal, B phase power supply adds to 11 pin of CD4013 after processing equally simultaneously, C phase power supply after processing equally, then becomes reset spike signal through C1, R10, VD4 and R11, adds to two reset terminal 4 pin and 10 pin of CD4013.
CD4013 inside comprises two d type flip flops A1, A2, and its earth terminal Vss is by R11 ground connection.
If the phase sequence order correct (namely occurring positive pulse with the order of A → B → C) of three phase electric machine M, then 1 pin (Q1 end) of CD4013 and 13 pin (Q2 end) all export high level, make VT1 and VT2 conducting, K coil obtains electric adhesive, its normally opened contact closes, then press SB1 and can start three phase electric machine M smoothly, the reset spike signal that the delayed B phase of C phase 120 ° exports makes A1 and A2 two d type flip flops reset simultaneously, complete and once circulate, now, on C2 lotus of charging make VT1 and VT2 maintain conducting state, when the next cycle signal of three-phase alternating current arrives, 1 pin and 13 pin of CD4013 export high level again, so go round and begin again.
If the phase sequence of three phase electric machine M incorrect (C → B → A, C → A → B or B → A → C), then 13 pin of CD4013 keep low level, VT1 and VT2 ends, K coil must not be electric, and the loop of KM1 coil without working power, then also can not allow KM1 coil obtain by SB1 electric, then three phase electric machine M cannot start, present embodiment can ensure before start, confirm whether three phase electric machine M is positive phase sequence, reminds unrelated person away from equipment simultaneously, guarantees personal safety.
Embodiment two: present embodiment is the further restriction to execution mode one, also comprise three-phase thermal relay FR, the coil of three-phase thermal relay FR is connected with the stator winding of three phase electric machine M, and the normally closed interlock of three-phase thermal relay FR is connected on A.C. contactor KM1 coil institute in the loop.
Present embodiment be provided with the safety guarantee being beneficial to circuit.
Claims (3)
1. three phase electric machine positive phase sequence safe starting control device, comprises three-phase breaker QS1 and A.C. contactor KM1, and three phase electric machine M often leaves by A.C. contactor KM1 main contacts KM1-1 to be connected three phase mains three live wires with three-phase breaker QS1 successively; And the A of three phase electric machine M corresponding connection live wire L1, B corresponding connection live wire L2, C corresponding connection live wire L3;
It is characterized in that, also comprise single-phase circuit breaker QS2, start button SB1, stop button SB2, auxiliary relay K, CD4013 double D trigger, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, resistance R8, resistance R9, resistance R10, resistance R11, resistance R12, electric capacity C1, electrochemical capacitor C2, diode VD1, diode VD2, diode VD3, diode VD4, diode VD5, voltage stabilizing didoe Vs1, voltage stabilizing didoe Vs2, voltage stabilizing didoe Vs3, NPN triode VT1, NPN triode VT2, neon indicator HL1, neon indicator HL2 and neon indicator HL3, and provide working power by the circuit that A.C. contactor KM1 often leaves between main contacts KM1-1 and circuit breaker Q S1,
Live wire L1 is one end of contact resistance R1 and one end of resistance R2 simultaneously, the other end of resistance R1 connects one end of neon indicator HL1, the other end of resistance R2 connects the other end of neon indicator HL1 and the anode of diode VD1 simultaneously, one end of the negative electrode contact resistance R3 of diode VD1, the other end of resistance R3 connects 3 pin of CD4013 double D trigger and the negative electrode of voltage stabilizing didoe Vs1, the plus earth of voltage stabilizing didoe Vs1 simultaneously;
Live wire L2 is one end of contact resistance R4 and one end of resistance R5 simultaneously, the other end of resistance R4 connects one end of neon indicator HL2, the other end of resistance R5 connects the other end of neon indicator HL2 and the anode of diode VD2 simultaneously, one end of the negative electrode contact resistance R6 of diode VD2, the other end of resistance R6 connects 11 pin of CD4013 double D trigger and the negative electrode of voltage stabilizing didoe Vs2, the plus earth of voltage stabilizing didoe Vs2 simultaneously;
Live wire L3 is one end of contact resistance R7 and one end of resistance R8 simultaneously, the other end of resistance R7 connects one end of neon indicator HL3, the other end of resistance R8 connects the other end of neon indicator HL3 and the anode of diode VD3 simultaneously, one end of the negative electrode contact resistance R9 of diode VD3, the other end of resistance R9 connects one end of electric capacity C1 and the negative electrode of voltage stabilizing didoe Vs1, the plus earth of voltage stabilizing didoe Vs1 simultaneously; The other end of electric capacity C1 connects the anode of diode VD4 and one end of resistance R10, the other end ground connection of resistance R10 simultaneously; The negative electrode of diode VD4 is 4 pin of one end of contact resistance R11, CD4013 double D trigger, 7 pin and 10 pin simultaneously, the other end ground connection of resistance R11;
5 pin of CD4013 double D trigger connect+12V DC power supply, 6 pin of CD4013 double D trigger and 8 pin ground connection simultaneously; 1 pin of CD4013 double D trigger connects 9 pin;
One end of 13 pin contact resistance R12 of CD4013 double D trigger, the other end of resistance R12 connects the positive pole of electrochemical capacitor C2 and the base stage of NPN triode VT1 simultaneously, the emitter of NPN triode VT1 connects the base stage of NPN triode VT2, the collector electrode of NPN triode VT1 connects the anode of diode VD5, the collector electrode of NPN triode VT2 connects one end of auxiliary relay K coil, and the negative electrode of diode VD5 is connected+12V DC power supply with the other end of auxiliary relay K coil simultaneously; The negative electrode of electrochemical capacitor C2 and the emitter of NPN triode VT2 ground connection simultaneously;
Start button SB1, stop button SB2, auxiliary relay K normally opened contact and A.C. contactor KM1 coil are connected between live wire L3 and zero line N by single-phase circuit breaker QS2;
A.C. contactor KM1 often leaves the two ends that auxiliary contact are connected in parallel on start button SB1.
2. three phase electric machine positive phase sequence safe starting control device according to claim 1, it is characterized in that, also comprise three-phase thermal relay FR, the coil of three-phase thermal relay FR is connected with the stator winding of three phase electric machine M, and the normally closed interlock of three-phase thermal relay FR is connected on A.C. contactor KM1 coil institute in the loop.
3. three phase electric machine positive phase sequence safe starting control device according to claim 1, is characterized in that, neon indicator HL1, neon indicator HL2 and neon indicator HL3 are along being arranged on same plectane clockwise or counterclockwise.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520332458.7U CN204578408U (en) | 2015-05-21 | 2015-05-21 | Three phase electric machine positive phase sequence safe starting control device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520332458.7U CN204578408U (en) | 2015-05-21 | 2015-05-21 | Three phase electric machine positive phase sequence safe starting control device |
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| CN204578408U true CN204578408U (en) | 2015-08-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640613A (en) * | 2016-11-15 | 2017-05-10 | 广州视源电子科技股份有限公司 | Starting method, starting system and starting device of compressor |
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- 2015-05-21 CN CN201520332458.7U patent/CN204578408U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640613A (en) * | 2016-11-15 | 2017-05-10 | 广州视源电子科技股份有限公司 | Starting method, starting system and starting device of compressor |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150819 Termination date: 20160521 |