CN103311889A - Manual switching protection circuit for dual power supplies - Google Patents
Manual switching protection circuit for dual power supplies Download PDFInfo
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- CN103311889A CN103311889A CN2013102671203A CN201310267120A CN103311889A CN 103311889 A CN103311889 A CN 103311889A CN 2013102671203 A CN2013102671203 A CN 2013102671203A CN 201310267120 A CN201310267120 A CN 201310267120A CN 103311889 A CN103311889 A CN 103311889A
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Abstract
The invention discloses a manual switching protection circuit for dual power supplies, belongs to the technical field of electric motor power supply control devices and provides a circuit capable of guaranteeing accurate manual switching of the dual power supplies of an electric motor. According to the technical scheme, the manual switching protection circuit for the dual power supplies comprises breakers, alternating current contactors, current relays, start buttons, stop buttons, fuses and intermediate relays, wherein a wire incoming end of the breaker DZ1 is connected with a first three-phase alternating-current supply, a wire outgoing end of the breaker DZ1 is connected with a main contact CJ1.2 of the alternating current contactor CJ1 and the current relay LJ1 in series sequentially and then connected with a power end of the electric motor D1, a wire incoming end of the breaker DZ2 is connected with a second three-phase alternating-current supply, and a wire outgoing end of the breaker DZ2 is connected with a main contact CJ2.2 of the alternating current contactor CJ2 and the current relay LJ2 in series sequentially and then connected with the power end of the electric motor D1. The manual switching protection circuit is applicable to the field of coal mines.
Description
Technical field
Duplicate supply manual switchover protective circuit of the present invention belongs to electric electromechanics source control device technical field.
Background technology
Because the particularity of colliery downhole production, underground work is very high to the requirement of safety, and especially at the damp and hot working face of high temperature, safety in production is vital; Coal mine is arranged with a lot of power consumption equipments, the dragging motor of these equipment mostly adopts dual power supply, working power and stand-by power supply, can guarantee equipment when the main supply electricity breaks down, switch to stand-by power supply, however because the complicated abominable operational environment in colliery, interference signal is many, operating personnel usually can not accurately judge the charged state of motor, and this brings potential safety hazard all for the manual switchover power supply of motor, also brings hidden danger for the safety in production in colliery.
Summary of the invention
The present invention overcomes the deficiency that prior art exists, and technical problem to be solved is: provide a kind of and can guarantee accurately circuit of motor duplicate supply manual switchover.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is: duplicate supply manual switchover protective circuit comprises: circuit breaker, A.C. contactor, current relay, start button, stop button, fuse and auxiliary relay, wherein:
The coil of A.C. contactor CJ1 is CJ1.1, and its main contacts is CJ1.2, and normally opened contact is CJ1.3, and normally-closed contact is CJ1.4;
The coil of A.C. contactor CJ2 is CJ2.1, and its main contacts is CJ2.2, and normally opened contact is CJ2.3, and normally-closed contact is CJ2.4;
The normally opened contact of current relay LJ1 is LJ1.1;
The normally opened contact of current relay LJ2 is LJ2.1;
The coil of intermediate relay ZJ 1 is ZJ1.1, and its normally-closed contact is ZJ1.2;
The coil of intermediate relay ZJ 2 is ZJ2.1, and its normally-closed contact is ZJ2.2;
The main circuit structure of motor D 1 is: link to each other with the power end of motor D1 behind the main contacts CJ1.2 that inlet wire termination the first three-phase alternating-current supply of circuit breaker DZ1, the leading-out terminal of described circuit breaker DZ1 are connected in series A.C. contactor CJ1 successively and the current relay LJ1;
Link to each other with the power end of motor D1 behind the main contacts CJ2.2 that inlet wire termination the second three-phase alternating-current supply of circuit breaker DZ2, the leading-out terminal of described circuit breaker DZ2 are connected in series A.C. contactor CJ2 successively and the current relay LJ2;
The control circuit structure of motor D 1 is: link to each other with the control circuit positive source behind the end of the described stop button TA1 serial connection fuse RT1, the other end of stop button TA1 and connect the end of normally opened contact LJ1.1 of an end, current relay LJ1 of start button QA1 and the end of start button QA2 after link to each other with the end of the normally opened contact LJ2.1 of current relay LJ2;
The other end of described start button QA1 links to each other with the control circuit power cathode after being connected in series successively coil CJ1.1 and the fuse RT2 of normally-closed contact CJ2.4, A.C. contactor CJ1 of its normally-closed contact ZJ1.2, A.C. contactor CJ2 of intermediate relay ZJ 1, and the normally opened contact CJ1.3 of described A.C. contactor CJ1 is attempted by the two ends of start button QA1;
Link to each other with the coil CJ1.1 of A.C. contactor CJ1 and the line between the fuse RT2 behind the coil ZJ1.1 of the other end serial connection intermediate relay ZJ 1 of the normally opened contact LJ1.1 of described current relay LJ1;
The other end of described start button QA2 links to each other with the coil CJ1.1 of A.C. contactor CJ1 and the line between the fuse RT2 after being connected in series successively the coil CJ2.1 of normally-closed contact CJ1.4, A.C. contactor CJ2 of its normally-closed contact ZJ2.2, A.C. contactor CJ1 of intermediate relay ZJ 2, and the normally opened contact CJ2.3 of described A.C. contactor CJ2 is attempted by the two ends of start button QA2;
Link to each other with the coil CJ1.1 of A.C. contactor CJ1 and the line between the fuse RT2 behind the coil ZJ2.1 of the other end serial connection intermediate relay ZJ 2 of the normally opened contact LJ2.1 of described current relay LJ2.
The beneficial effect that the present invention compared with prior art has is: the present invention is in the time of device fails, can trip rapidly and enter protection, reach the purpose of excision fault, and in the duplicate supply control circuit of motor, adopt power interlock, prevent the generation of misoperation, the safety of assurance personnel and equipment guarantees that the safety of coal production is carried out; Control circuit of the present invention is simple for structure, and is practical.
Description of drawings
The present invention will be further described in detail below in conjunction with accompanying drawing:
Fig. 1 is the main circuit diagram of motor of the present invention;
Fig. 2 is the control circuit figure of motor of the present invention.
Embodiment
As depicted in figs. 1 and 2, duplicate supply manual switchover protective circuit of the present invention comprises: circuit breaker, A.C. contactor, current relay, start button, stop button, fuse and auxiliary relay, wherein:
The coil of A.C. contactor CJ1 is CJ1.1, and its main contacts is CJ1.2, and normally opened contact is CJ1.3, and normally-closed contact is CJ1.4;
The coil of A.C. contactor CJ2 is CJ2.1, and its main contacts is CJ2.2, and normally opened contact is CJ2.3, and normally-closed contact is CJ2.4;
The normally opened contact of current relay LJ1 is LJ1.1;
The normally opened contact of current relay LJ2 is LJ2.1;
The coil of intermediate relay ZJ 1 is ZJ1.1, and its normally-closed contact is ZJ1.2;
The coil of intermediate relay ZJ 2 is ZJ2.1, and its normally-closed contact is ZJ2.2;
The main circuit structure of motor D 1 is: link to each other with the power end of motor D1 behind the main contacts CJ1.2 that inlet wire termination A, the B of circuit breaker DZ1, C the first three-phase alternating-current supply, the leading-out terminal of described circuit breaker DZ1 are connected in series A.C. contactor CJ1 successively and the current relay LJ1;
Link to each other with the power end of motor D1 behind the main contacts CJ2.2 that inlet wire termination U, the V of circuit breaker DZ2, W the second three-phase alternating-current supply, the leading-out terminal of described circuit breaker DZ2 are connected in series A.C. contactor CJ2 successively and the current relay LJ2;
The control circuit structure of motor D 1 is: link to each other with the control circuit positive source behind the end of the described stop button TA1 serial connection fuse RT1, the other end of stop button TA1 and connect the end of normally opened contact LJ1.1 of an end, current relay LJ1 of start button QA1 and the end of start button QA2 after link to each other with the end of the normally opened contact LJ2.1 of current relay LJ2;
The other end of described start button QA1 links to each other with the control circuit power cathode after being connected in series successively coil CJ1.1 and the fuse RT2 of normally-closed contact CJ2.4, A.C. contactor CJ1 of its normally-closed contact ZJ1.2, A.C. contactor CJ2 of intermediate relay ZJ 1, and the normally opened contact CJ1.3 of described A.C. contactor CJ1 is attempted by the two ends of start button QA1;
Link to each other with the coil CJ1.1 of A.C. contactor CJ1 and the line between the fuse RT2 behind the coil ZJ1.1 of the other end serial connection intermediate relay ZJ 1 of the normally opened contact LJ1.1 of described current relay LJ1;
The other end of described start button QA2 links to each other with the coil CJ1.1 of A.C. contactor CJ1 and the line between the fuse RT2 after being connected in series successively the coil CJ2.1 of normally-closed contact CJ1.4, A.C. contactor CJ2 of its normally-closed contact ZJ2.2, A.C. contactor CJ1 of intermediate relay ZJ 2, and the normally opened contact CJ2.3 of described A.C. contactor CJ2 is attempted by the two ends of start button QA2;
Link to each other with the coil CJ1.1 of A.C. contactor CJ1 and the line between the fuse RT2 behind the coil ZJ2.1 of the other end serial connection intermediate relay ZJ 2 of the normally opened contact LJ2.1 of described current relay LJ2.
The present invention is by current relay moment monitoring current information; in the time of device fails; rely on current relay to trip rapidly and enter protection; reach the purpose of excision fault; and in the duplicate supply control circuit of motor, adopt power interlock; prevent the generation of misoperation, the safety of assurance personnel and equipment guarantees that the safety of coal production is carried out.
The above has done detailed description to embodiments of the invention by reference to the accompanying drawings, but the present invention is not limited to above-described embodiment, in the ken that those of ordinary skills possess, can also make various variations under the prerequisite that does not break away from aim of the present invention.
Claims (1)
1. duplicate supply manual switchover protective circuit is characterized in that: comprising: circuit breaker, A.C. contactor, current relay, start button, stop button, fuse and auxiliary relay, wherein:
The coil of A.C. contactor CJ1 is CJ1.1, and its main contacts is CJ1.2, and normally opened contact is CJ1.3, and normally-closed contact is CJ1.4;
The coil of A.C. contactor CJ2 is CJ2.1, and its main contacts is CJ2.2, and normally opened contact is CJ2.3, and normally-closed contact is CJ2.4;
The normally opened contact of current relay LJ1 is LJ1.1;
The normally opened contact of current relay LJ2 is LJ2.1;
The coil of intermediate relay ZJ 1 is ZJ1.1, and its normally-closed contact is ZJ1.2;
The coil of intermediate relay ZJ 2 is ZJ2.1, and its normally-closed contact is ZJ2.2;
The main circuit structure of motor D 1 is: link to each other with the power end of motor D1 behind the main contacts CJ1.2 that inlet wire termination the first three-phase alternating-current supply of circuit breaker DZ1, the leading-out terminal of described circuit breaker DZ1 are connected in series A.C. contactor CJ1 successively and the current relay LJ1;
Link to each other with the power end of motor D1 behind the main contacts CJ2.2 that inlet wire termination the second three-phase alternating-current supply of circuit breaker DZ2, the leading-out terminal of described circuit breaker DZ2 are connected in series A.C. contactor CJ2 successively and the current relay LJ2;
The control circuit structure of motor D 1 is: link to each other with the control circuit positive source behind the end of the described stop button TA1 serial connection fuse RT1, the other end of stop button TA1 and connect the end of normally opened contact LJ1.1 of an end, current relay LJ1 of start button QA1 and the end of start button QA2 after link to each other with the end of the normally opened contact LJ2.1 of current relay LJ2;
The other end of described start button QA1 links to each other with the control circuit power cathode after being connected in series successively coil CJ1.1 and the fuse RT2 of normally-closed contact CJ2.4, A.C. contactor CJ1 of its normally-closed contact ZJ1.2, A.C. contactor CJ2 of intermediate relay ZJ 1, and the normally opened contact CJ1.3 of described A.C. contactor CJ1 is attempted by the two ends of start button QA1;
Link to each other with the coil CJ1.1 of A.C. contactor CJ1 and the line between the fuse RT2 behind the coil ZJ1.1 of the other end serial connection intermediate relay ZJ 1 of the normally opened contact LJ1.1 of described current relay LJ1;
The other end of described start button QA2 links to each other with the coil CJ1.1 of A.C. contactor CJ1 and the line between the fuse RT2 after being connected in series successively the coil CJ2.1 of normally-closed contact CJ1.4, A.C. contactor CJ2 of its normally-closed contact ZJ2.2, A.C. contactor CJ1 of intermediate relay ZJ 2, and the normally opened contact CJ2.3 of described A.C. contactor CJ2 is attempted by the two ends of start button QA2;
Link to each other with the coil CJ1.1 of A.C. contactor CJ1 and the line between the fuse RT2 behind the coil ZJ2.1 of the other end serial connection intermediate relay ZJ 2 of the normally opened contact LJ2.1 of described current relay LJ2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102671203A CN103311889A (en) | 2013-06-29 | 2013-06-29 | Manual switching protection circuit for dual power supplies |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102671203A CN103311889A (en) | 2013-06-29 | 2013-06-29 | Manual switching protection circuit for dual power supplies |
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| CN103311889A true CN103311889A (en) | 2013-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013102671203A Pending CN103311889A (en) | 2013-06-29 | 2013-06-29 | Manual switching protection circuit for dual power supplies |
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| CN (1) | CN103311889A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104037933A (en) * | 2014-05-30 | 2014-09-10 | 许继电气股份有限公司 | Rapid switching circuit and switching control method of UPS (Uninterruptible Power Supply) |
| CN104201763A (en) * | 2014-09-19 | 2014-12-10 | 国家电网公司 | Alternating-current distribution panel emergency power device |
| CN104407531A (en) * | 2014-12-10 | 2015-03-11 | 中国建材国际工程集团有限公司 | Main transmission control method for glass factory |
| CN104733227A (en) * | 2013-12-18 | 2015-06-24 | 苏州御能动力科技有限公司 | Alternating-current contactor protection device and protection method thereof |
| CN107102184A (en) * | 2017-06-13 | 2017-08-29 | 湖南中车时代通信信号有限公司 | A kind of accident indicator |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11206001A (en) * | 1998-01-07 | 1999-07-30 | Meidensha Corp | Protector for motor |
| CN2874898Y (en) * | 2006-02-23 | 2007-02-28 | 蔡军 | Double power source switch device |
| CN201509172U (en) * | 2009-08-24 | 2010-06-16 | 襄垣县树元电器有限公司 | Device for controlling positive and negative rotation position of motor |
| CN202586288U (en) * | 2012-05-31 | 2012-12-05 | 襄垣县树元电器有限公司 | Overpressure and overheat protective device |
| CN203434595U (en) * | 2013-06-29 | 2014-02-12 | 襄垣县树元电器有限公司 | Dual power supply manual switch protection circuit |
-
2013
- 2013-06-29 CN CN2013102671203A patent/CN103311889A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11206001A (en) * | 1998-01-07 | 1999-07-30 | Meidensha Corp | Protector for motor |
| CN2874898Y (en) * | 2006-02-23 | 2007-02-28 | 蔡军 | Double power source switch device |
| CN201509172U (en) * | 2009-08-24 | 2010-06-16 | 襄垣县树元电器有限公司 | Device for controlling positive and negative rotation position of motor |
| CN202586288U (en) * | 2012-05-31 | 2012-12-05 | 襄垣县树元电器有限公司 | Overpressure and overheat protective device |
| CN203434595U (en) * | 2013-06-29 | 2014-02-12 | 襄垣县树元电器有限公司 | Dual power supply manual switch protection circuit |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104733227A (en) * | 2013-12-18 | 2015-06-24 | 苏州御能动力科技有限公司 | Alternating-current contactor protection device and protection method thereof |
| CN104037933A (en) * | 2014-05-30 | 2014-09-10 | 许继电气股份有限公司 | Rapid switching circuit and switching control method of UPS (Uninterruptible Power Supply) |
| CN104037933B (en) * | 2014-05-30 | 2018-08-10 | 许继电气股份有限公司 | A kind of fast switch circuit and method for handover control of UPS |
| CN104201763A (en) * | 2014-09-19 | 2014-12-10 | 国家电网公司 | Alternating-current distribution panel emergency power device |
| CN104201763B (en) * | 2014-09-19 | 2016-02-10 | 国家电网公司 | AC distribution panel emergency power supply unit |
| CN104407531A (en) * | 2014-12-10 | 2015-03-11 | 中国建材国际工程集团有限公司 | Main transmission control method for glass factory |
| CN107102184A (en) * | 2017-06-13 | 2017-08-29 | 湖南中车时代通信信号有限公司 | A kind of accident indicator |
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Application publication date: 20130918 |