CN204156764U - 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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- CN204156764U CN204156764U CN201420701975.2U CN201420701975U CN204156764U CN 204156764 U CN204156764 U CN 204156764U CN 201420701975 U CN201420701975 U CN 201420701975U CN 204156764 U CN204156764 U CN 204156764U
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- 238000000819 phase cycle Methods 0.000 title claims abstract description 24
- 241000272470 Circus Species 0.000 claims abstract description 16
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 14
- 239000003990 capacitor Substances 0.000 claims description 18
- 230000003111 delayed effect Effects 0.000 claims description 6
- 230000005611 electricity Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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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 S2 ~ QS4, three-phase fuse FR, start button SB1, stop button SB2, A.C. contactor KM2, auxiliary relay K, energization delay relay KT, 7805 voltage stabilizing chips, single phase bridge type rectifier circu VD, resistance R1, R2, electric capacity C1 ~ C3, diode D1, Notify Me lamp HL1, positive sequence indicator light HL2 and loudspeaker BL; And provide working power by being arranged on 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, 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 S2, circuit breaker Q S3, circuit breaker Q S4, three-phase fuse FR, start button SB1, stop button SB2, A.C. contactor KM2, auxiliary relay K, energization delay relay KT, 7805 voltage stabilizing chips, single phase bridge type rectifier circu VD, resistance R1, resistance R2, electric capacity C1, electrochemical capacitor C2, electrochemical capacitor C3, diode D1, Notify Me lamp HL1, positive sequence indicator light HL2 and loudspeaker BL; And provide working power by the circuit that A.C. contactor KM1 often leaves between main contacts KM1-1 and circuit breaker Q S1;
One end of resistance R1 connects live wire L3 by a phase switch of circuit breaker Q S2, and the other end of resistance R1 connects an ac input end of single phase bridge type rectifier circu VD; One end of electric capacity C1 connects live wire L2 by a phase switch of circuit breaker Q S2, one end of resistance R2 connects live wire L1 by a phase switch of circuit breaker Q S2, and the other end of electric capacity C1 is connected another ac input end of single phase bridge type rectifier circu VD with the other end of resistance R2 simultaneously; The cathode power supply output of single phase bridge type rectifier circu VD connects the negative electrode of diode D1,1 pin of 7805 voltage stabilizing chips and the positive pole of electrochemical capacitor C2 simultaneously, and 3 pin of 7805 voltage stabilizing chips connect the anode of diode D1, the positive pole of electrochemical capacitor C3 and one end of auxiliary relay K coil simultaneously; The negative power supply output of single phase bridge type rectifier circu VD is connected with the other end of the negative pole of electrochemical capacitor C2,2 pin of 7805 voltage stabilizing chips, the negative pole of electrochemical capacitor C3 and auxiliary relay K coil simultaneously;
One end that A.C. contactor KM2 often leaves auxiliary contact KM2-2 connects live wire L3 by a phase switch of circuit breaker Q S3, the other end that A.C. contactor KM2 often leaves auxiliary contact KM2-2 connects one end of loudspeaker BL and one end of Notify Me lamp HL1 simultaneously, and the other end of loudspeaker BL is connected zero line N by a phase switch of circuit breaker Q S3 with the other end of Notify Me lamp HL1 simultaneously;
Live wire L2 often opens one end of auxiliary contact KM1-3 and one end of auxiliary relay K normally opened contact K-2 by a phase switch of circuit breaker Q S4 connects one end of stop button SB2, energization delay relay KT often opens delayed contact one end, A.C. contactor KM1 simultaneously, the other end of stop button SB2 connects one end that one end of start button SB1 and A.C. contactor KM2 often leave auxiliary contact KM2-1 simultaneously, the other end of start button SB1 connects A.C. contactor KM2 simultaneously and often opens the other end of auxiliary contact KM2-1 and one end of auxiliary relay K normally opened contact K-1, the other end of auxiliary relay K normally opened contact K-1 connects one end of A.C. contactor KM1 normally closed auxiliary contact KM1-2, the other end of A.C. contactor KM1 normally closed auxiliary contact KM1-2 connects one end of A.C. contactor KM2 coil and one end of energization delay relay KT coil simultaneously, the other end of A.C. contactor KM2 coil connects the other end of energization delay relay KT coil simultaneously, one end of A.C. contactor KM1 coil and one end of three-phase fuse FR normally closed auxiliary contact, the other end of A.C. contactor KM1 coil connects energization delay relay KT simultaneously and often opens the other end that the other end of delayed contact and A.C. contactor KM1 often open auxiliary contact KM1-3, the other end of auxiliary relay K normally opened contact K-2 connects one end of positive sequence indicator light HL2, and the other end of positive sequence indicator light HL2 connects the other end of three-phase fuse FR normally closed auxiliary contact, and connects live wire L3 by a phase switch of circuit breaker Q S4.
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, three phase electric machine positive phase sequence safe starting control device, comprise circuit breaker Q S1 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 circuit breaker Q S1 successively;
Also comprise circuit breaker Q S2, circuit breaker Q S3, circuit breaker Q S4, three-phase fuse FR, start button SB1, stop button SB2, A.C. contactor KM2, auxiliary relay K, energization delay relay KT, 7805 voltage stabilizing chips, single phase bridge type rectifier circu VD, resistance R1, resistance R2, electric capacity C1, electrochemical capacitor C2, electrochemical capacitor C3, diode D1, Notify Me lamp HL1, positive sequence indicator light HL2 and loudspeaker BL; And provide working power by the circuit that A.C. contactor KM1 often leaves between main contacts KM1-1 and circuit breaker Q S1;
One end of resistance R1 connects live wire L3 by a phase switch of circuit breaker Q S2, and the other end of resistance R1 connects an ac input end of single phase bridge type rectifier circu VD; One end of electric capacity C1 connects live wire L2 by a phase switch of circuit breaker Q S2, one end of resistance R2 connects live wire L1 by a phase switch of circuit breaker Q S2, and the other end of electric capacity C1 is connected another ac input end of single phase bridge type rectifier circu VD with the other end of resistance R2 simultaneously; The cathode power supply output of single phase bridge type rectifier circu VD connects the negative electrode of diode D1,1 pin of 7805 voltage stabilizing chips and the positive pole of electrochemical capacitor C2 simultaneously, and 3 pin of 7805 voltage stabilizing chips connect the anode of diode D1, the positive pole of electrochemical capacitor C3 and one end of auxiliary relay K coil simultaneously; The negative power supply output of single phase bridge type rectifier circu VD is connected with the other end of the negative pole of electrochemical capacitor C2,2 pin of 7805 voltage stabilizing chips, the negative pole of electrochemical capacitor C3 and auxiliary relay K coil simultaneously;
One end that A.C. contactor KM2 often leaves auxiliary contact KM2-2 connects live wire L3 by a phase switch of circuit breaker Q S3, the other end that A.C. contactor KM2 often leaves auxiliary contact KM2-2 connects one end of loudspeaker BL and one end of Notify Me lamp HL1 simultaneously, and the other end of loudspeaker BL is connected zero line N by a phase switch of circuit breaker Q S3 with the other end of Notify Me lamp HL1 simultaneously;
Live wire L2 often opens one end of auxiliary contact KM1-3 and one end of auxiliary relay K normally opened contact K-2 by a phase switch of circuit breaker Q S4 connects one end of stop button SB2, energization delay relay KT often opens delayed contact one end, A.C. contactor KM1 simultaneously, the other end of stop button SB2 connects one end that one end of start button SB1 and A.C. contactor KM2 often leave auxiliary contact KM2-1 simultaneously, the other end of start button SB1 connects A.C. contactor KM2 simultaneously and often opens the other end of auxiliary contact KM2-1 and one end of auxiliary relay K normally opened contact K-1, the other end of auxiliary relay K normally opened contact K-1 connects one end of A.C. contactor KM1 normally closed auxiliary contact KM1-2, the other end of A.C. contactor KM1 normally closed auxiliary contact KM1-2 connects one end of A.C. contactor KM2 coil and one end of energization delay relay KT coil simultaneously, the other end of A.C. contactor KM2 coil connects the other end of energization delay relay KT coil simultaneously, one end of A.C. contactor KM1 coil and one end of three-phase fuse FR normally closed auxiliary contact, the other end of A.C. contactor KM1 coil connects energization delay relay KT simultaneously and often opens the other end that the other end of delayed contact and A.C. contactor KM1 often open auxiliary contact KM1-3, the other end of auxiliary relay K normally opened contact K-2 connects one end of positive sequence indicator light HL2, and the other end of positive sequence indicator light HL2 connects the other end of three-phase fuse FR normally closed auxiliary contact, and connects live wire L3 by a phase switch of circuit breaker Q S4.
Notify Me lamp HL1 selects red colored lamp.
Positive sequence indicator light HL2 selects green light.
Operation principle and process: close QS1, L1, L2, L3 provide 380V power supply; Close QS2, if the wiring phase sequence of three phase electric machine M is negative phase sequence (A → C → B, C → A → B or B → A → C), a last advanced rear phase 120 ° mutually, now the alternating voltage of E point is very low, only there is a few volt, make rear class can not get enough direct voltages, auxiliary relay K coil cannot obtain electric, can not produce adhesive action, K-1 is off-state, cut off the power supply of KM2 coil, then pressed start button SB1, three phase electric machine M cannot have been started.
If the wiring phase sequence of motor M is positive phase sequence (A → B → C), then the alternating voltage of E point is up to more than 20V, through VD bridge rectifier, C2, C3 filtering, 7805 voltage stabilizings export+12V DC power supply, make auxiliary relay K coil obtain electric, its normally opened contact K-1 and K-2 is all closed, and K-2 closes, then HL2 is bright, and indication motor phase sequence is positive phase sequence; K-1 closes as subsequent control is prepared, and can open motor operation.
Close QS3 and QS4, presses start button SB1, now KM1-2 because of KM1 coil not electric and be in closure state, KM2 coil obtains electric, and KM2-1 closes self-locking; KM2-2 closes, and loudspeaker BL is loud, HL1 is bright, and acousto-optic before starting shooting is reminded, and allows the unrelated person around equipment leave, arrives safety zone and go; KM2 coil obtain electric while, KT coil also electric, after time delay a period of time, the time delay normally opened contact of KT just performs closed procedure, then KM1 coil obtains electric, and KM1-3 closes self-locking, and KM1-1 main contacts closes, and starts three phase electric machine M, carries out work.KM1 coil obtains electric, then its normally-closed contact KM1-2 disconnects, and switch the power supply of KM2 coil, KM2 coil losing electricity, KM2-2 recovers off-state, and acousto-optic reminding unit is cut.
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.
Claims (3)
1. three phase electric machine positive phase sequence safe starting control device, 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;
It is characterized in that, also comprise circuit breaker Q S2, circuit breaker Q S3, circuit breaker Q S4, three-phase fuse FR, start button SB1, stop button SB2, A.C. contactor KM2, auxiliary relay K, energization delay relay KT, 7805 voltage stabilizing chips, single phase bridge type rectifier circu VD, resistance R1, resistance R2, electric capacity C1, electrochemical capacitor C2, electrochemical capacitor C3, diode D1, Notify Me lamp HL1, positive sequence indicator light HL2 and loudspeaker BL; And provide working power by the circuit that A.C. contactor KM1 often leaves between main contacts KM1-1 and circuit breaker Q S1;
One end of resistance R1 connects live wire L3 by a phase switch of circuit breaker Q S2, and the other end of resistance R1 connects an ac input end of single phase bridge type rectifier circu VD; One end of electric capacity C1 connects live wire L2 by a phase switch of circuit breaker Q S2, one end of resistance R2 connects live wire L1 by a phase switch of circuit breaker Q S2, and the other end of electric capacity C1 is connected another ac input end of single phase bridge type rectifier circu VD with the other end of resistance R2 simultaneously; The cathode power supply output of single phase bridge type rectifier circu VD connects the negative electrode of diode D1,1 pin of 7805 voltage stabilizing chips and the positive pole of electrochemical capacitor C2 simultaneously, and 3 pin of 7805 voltage stabilizing chips connect the anode of diode D1, the positive pole of electrochemical capacitor C3 and one end of auxiliary relay K coil simultaneously; The negative power supply output of single phase bridge type rectifier circu VD is connected with the other end of the negative pole of electrochemical capacitor C2,2 pin of 7805 voltage stabilizing chips, the negative pole of electrochemical capacitor C3 and auxiliary relay K coil simultaneously;
One end that A.C. contactor KM2 often leaves auxiliary contact KM2-2 connects live wire L3 by a phase switch of circuit breaker Q S3, the other end that A.C. contactor KM2 often leaves auxiliary contact KM2-2 connects one end of loudspeaker BL and one end of Notify Me lamp HL1 simultaneously, and the other end of loudspeaker BL is connected zero line N by a phase switch of circuit breaker Q S3 with the other end of Notify Me lamp HL1 simultaneously;
Live wire L2 often opens one end of auxiliary contact KM1-3 and one end of auxiliary relay K normally opened contact K-2 by a phase switch of circuit breaker Q S4 connects one end of stop button SB2, energization delay relay KT often opens delayed contact one end, A.C. contactor KM1 simultaneously, the other end of stop button SB2 connects one end that one end of start button SB1 and A.C. contactor KM2 often leave auxiliary contact KM2-1 simultaneously, the other end of start button SB1 connects A.C. contactor KM2 simultaneously and often opens the other end of auxiliary contact KM2-1 and one end of auxiliary relay K normally opened contact K-1, the other end of auxiliary relay K normally opened contact K-1 connects one end of A.C. contactor KM1 normally closed auxiliary contact KM1-2, the other end of A.C. contactor KM1 normally closed auxiliary contact KM1-2 connects one end of A.C. contactor KM2 coil and one end of energization delay relay KT coil simultaneously, the other end of A.C. contactor KM2 coil connects the other end of energization delay relay KT coil simultaneously, one end of A.C. contactor KM1 coil and one end of three-phase fuse FR normally closed auxiliary contact, the other end of A.C. contactor KM1 coil connects energization delay relay KT simultaneously and often opens the other end that the other end of delayed contact and A.C. contactor KM1 often open auxiliary contact KM1-3, the other end of auxiliary relay K normally opened contact K-2 connects one end of positive sequence indicator light HL2, and the other end of positive sequence indicator light HL2 connects the other end of three-phase fuse FR normally closed auxiliary contact, and connects live wire L3 by a phase switch of circuit breaker Q S4.
2. three phase electric machine positive phase sequence safe starting control device according to claim 1, it is characterized in that, Notify Me lamp HL1 selects red colored lamp.
3. three phase electric machine positive phase sequence safe starting control device according to claim 1, it is characterized in that, positive sequence indicator light HL2 selects green light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420701975.2U CN204156764U (en) | 2014-11-20 | 2014-11-20 | Three phase electric machine positive phase sequence safe starting control device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420701975.2U CN204156764U (en) | 2014-11-20 | 2014-11-20 | Three phase electric machine positive phase sequence safe starting control device |
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| CN204156764U true CN204156764U (en) | 2015-02-11 |
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| CN201420701975.2U Expired - Fee Related CN204156764U (en) | 2014-11-20 | 2014-11-20 | Three phase electric machine positive phase sequence safe starting control device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105375825A (en) * | 2015-11-11 | 2016-03-02 | 国网黑龙江省电力有限公司管理培训中心 | Control apparatus for motor safe startup |
| CN105990891A (en) * | 2016-03-08 | 2016-10-05 | 合肥南南电力设备有限公司 | Valley time charger |
| CN106291141A (en) * | 2016-08-30 | 2017-01-04 | 中国能源建设集团江苏省电力建设第工程有限公司 | Job site three-phase power supply phase sequence automatic identification equipment |
| CN109270855A (en) * | 2018-11-22 | 2019-01-25 | 中联重科股份有限公司 | Starting control equipment, method and engineering machinery for engineering machinery |
| CN110850205A (en) * | 2019-11-12 | 2020-02-28 | 中车长春轨道客车股份有限公司 | Auxiliary device for differential flow monitoring test of motor train unit |
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2014
- 2014-11-20 CN CN201420701975.2U patent/CN204156764U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105375825A (en) * | 2015-11-11 | 2016-03-02 | 国网黑龙江省电力有限公司管理培训中心 | Control apparatus for motor safe startup |
| CN105375825B (en) * | 2015-11-11 | 2018-03-23 | 国网黑龙江省电力有限公司 | The control device that motor safety starts |
| CN105990891A (en) * | 2016-03-08 | 2016-10-05 | 合肥南南电力设备有限公司 | Valley time charger |
| CN106291141A (en) * | 2016-08-30 | 2017-01-04 | 中国能源建设集团江苏省电力建设第工程有限公司 | Job site three-phase power supply phase sequence automatic identification equipment |
| CN106291141B (en) * | 2016-08-30 | 2023-08-04 | 中国能源建设集团江苏省电力建设第一工程有限公司 | Automatic phase sequence identification device for three-phase power supply on construction site |
| CN109270855A (en) * | 2018-11-22 | 2019-01-25 | 中联重科股份有限公司 | Starting control equipment, method and engineering machinery for engineering machinery |
| CN109270855B (en) * | 2018-11-22 | 2021-01-15 | 中联重科股份有限公司 | Starting control equipment and method for engineering machinery and engineering machinery |
| CN110850205A (en) * | 2019-11-12 | 2020-02-28 | 中车长春轨道客车股份有限公司 | Auxiliary device for differential flow monitoring test of motor train unit |
| CN110850205B (en) * | 2019-11-12 | 2021-08-27 | 中车长春轨道客车股份有限公司 | Auxiliary device for differential flow monitoring test of motor train unit |
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| Date | Code | Title | Description |
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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 |
Granted publication date: 20150211 Termination date: 20171120 |
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| CF01 | Termination of patent right due to non-payment of annual fee |