CN204289279U - A kind of Novel AC contactor - Google Patents
A kind of Novel AC contactor Download PDFInfo
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- CN204289279U CN204289279U CN201420478507.3U CN201420478507U CN204289279U CN 204289279 U CN204289279 U CN 204289279U CN 201420478507 U CN201420478507 U CN 201420478507U CN 204289279 U CN204289279 U CN 204289279U
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Abstract
The utility model proposes a kind of Novel AC contactor, form primarily of the three-phase independent electromagnetic mechanism be connected with master-control room, three-phase contact and three-phase current detection device; Three-phase independent electromagnetic mechanism is connected with master-control room by wire with three-phase current detection device, and three-phase contact is then linked together by steel pole jockey with three-phase independent electromagnetic mechanism; Ge Xiang independent electromagnetic mechanism is by moving iron core, and static iron core and coil form.By controlling each phase-splitting of A.C. contactor respectively, control each phase contact respectively in current zero-crossing point disjunction, complete the disjunction action of whole A.C. contactor, reach the object of A.C. contactor thick-less vane, the life-span of A.C. contactor is largely improved, whole electric system is significant.
Description
Technical field
The utility model belongs to electric elements field, specifically refers to the device, particularly a kind of Novel AC contactor that cut off in a kind of circuit or switch on power and separating brake method thereof.
Background technology
Contactor refers to cut-offfing of the overload current that frequently can close, carry and cut-off normal current and regulation in the narrow sense and closes locking device.Be widely used in the middle of electric power, distribution and power consumption equipment.Contactor broadly refers in industrial electro and utilizes coil to flow through current induced magnetic field, makes contact closure, to reach the electrical equipment of control load.Contactor, by the electromagnetic system comprising iron core, solenoid, comprises the contact system of normally open contact or normally closed interlock, and arc-control device composition.In electrotechnics; because contactor fast shut-off can exchange with direct current major loop and can connect the device with big current control circuit continually; so often apply to motor as control object; also can be used as controlling the electrical loads such as shop equipment, electric heater, machine-tool and various kinds electric power unit; contactor can not only be connected and cut off circuit, but also has the effect of low-voltage release guard.Contactor control capability is large, and being applicable to frequent operation and far distance controlled, is one of critical elements in automatic control system.In industrial electric, contactor purposes is quite extensive.
Along with development and the introducing of microelectric technique and computer technology, A.C. contactor starts to stride forward to intelligent direction.Alternating current is that therefore electric current certainly exists zero-acrross ing moment along with time alternately change between its positive negative peak.In general the blow-out method of ac electric apparatus is generally complete at its zero crossing.So electric arc zero district is best deciliter moment.But conventional AC contactor is all 3 contacts to be controlled simultaneously, each contact cannot be reached and distinguish at electric arc zero disconnected, a large amount of electric arc can be produced like this, make the contact unstable wear of contactor, so that the useful life of A.C. contactor reduce greatly.
Summary of the invention
Goal of the invention
For above-mentioned problems of the prior art, the utility model provides a kind of contactor arc-free disjunction, compact conformation, break-make is reliable, and the novel intelligent A.C. contactor of compact and separating brake method thereof, from the blow-out principle of A.C. contactor, utilize the zero-acrross ing moment of alternating current, control 3 contacts respectively by single-chip microcomputer, make three of contactor contacts complete disjunction action respectively at current zero-crossing point, thus reach the object of contact zero crossing that conventional contact cannot complete deciliter.
Technical scheme
A kind of Novel AC contactor, is characterized in that: form primarily of the three-phase independent electromagnetic mechanism be connected with master-control room, three-phase contact and three-phase current detection device; Three-phase independent electromagnetic mechanism is connected with master-control room by wire with three-phase current detection device, and three-phase contact is then linked together by steel pole jockey with three-phase independent electromagnetic mechanism; Ge Xiang independent electromagnetic mechanism is by moving iron core, and static iron core and coil form.
Three-phase independent electromagnetic mechanism is respectively A phase electromagnetic mechanism, B phase electromagnetic mechanism and C phase electromagnetic mechanism; Three-phase contact is respectively A phase contact, B phase contact and C phase contact; Three-phase current detection device is respectively A phase current detector, B phase current detector, C phase current detector; A phase electromagnetic mechanism is all connected with master-control room by wire with C phase current detector with B phase current detector and C phase electromagnetic mechanism with A phase current detector, B phase electromagnetic mechanism; A phase contact and A phase electromagnetic mechanism, B phase contact and B phase electromagnetic mechanism and C phase contact and C phase electromagnetic mechanism link together by steel pole jockey.
Advantage and effect
The utility model is a kind of Novel AC contactor, and tool has the following advantages and beneficial effect:
The utility model is different from traditional A.C. contactor.First, the separating brake phasing that each phase contact controls separately to realize easily each phase controls, and the zero current realizing each phase contact cut-offs.Each phase contact controls separately to make the counter-force of system reduce to 1/3 when unification controls, and is convenient to quick control.Secondly, by controlling separately to realize thick-less vane to each phase contact.Life-span upgrading for contactor is very large.The utility model changes traditional contactors disjunction mode, by individual-phase control, achieves contactor thick-less vane.Greatly improve the contactor life-span.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is overall hardware circuit diagram of the present utility model.
Description of reference numerals:
1, A phase current detector, 2, B phase current detector, 3, C phase current detector, 4, A phase contact, 5, B phase contact, 6, C phase contact, 7, A phase electromagnetic mechanism, 8, B phase electromagnetic mechanism, 9, C phase electromagnetic mechanism, 10, master-control room.
Embodiment
The utility model is a kind of Novel AC contactor, by controlling each phase-splitting of A.C. contactor respectively, reaches the object of thick-less vane.This Novel AC contactor sends single-chip microcomputer to curent change in real time by current detecting part, and when the disjunction of needs A.C. contactor, single-chip microcomputer can produce control signal, controls each phase coil power-off respectively, completes the action of whole A.C. contactor.Contactor comprises 3 phase independent electromagnetic mechanisms, contact, current sensing means and a few part composition of master-control room.Master-control room comprises single-chip microcomputer and control circuit.Each phase electromagnetic mechanism has iron core, static iron core and coil composition.The input signal of master-control room passes through wire transmission control signal by current sensing means.
This A.C. contactor respectively in the current zero-crossing point disjunction of each phase, thus can reach thick-less vane, and avoid the wearing and tearing of electric arc for contact, the life-span for contactor improves a lot.
Below in conjunction with accompanying drawing, the utility model is described further:
The utility model proposes a kind of Novel AC contactor, as shown in Figures 1 and 2, form primarily of the three-phase independent electromagnetic mechanism be connected with master-control room 10, three-phase contact and three-phase current detection device; Three-phase independent electromagnetic mechanism is connected with master-control room 10 by wire with three-phase current detection device, and three-phase contact is then linked together by steel pole jockey with three-phase independent electromagnetic mechanism; Ge Xiang independent electromagnetic mechanism is by moving iron core, and static iron core and coil form.
Three-phase independent electromagnetic mechanism is respectively A phase electromagnetic mechanism 7, B phase electromagnetic mechanism 8 and C phase electromagnetic mechanism 9; Three-phase contact is respectively A phase contact 4, B phase contact 5 and C phase contact 6; Three-phase current detection device is respectively A phase current detector 1, B phase current detector 2, C phase current detector 3; A phase electromagnetic mechanism 7 is all connected with master-control room 10 by wire with C phase current detector 3 with B phase current detector 2 and C phase electromagnetic mechanism 9 with A phase current detector 1, B phase electromagnetic mechanism 8; A phase contact 4 links together by steel pole jockey with C phase electromagnetic mechanism 9 with B phase electromagnetic mechanism 8 and C phase contact 6 with A phase electromagnetic mechanism 7, B phase contact 5.
Master-control room 10 comprises single-chip microcomputer and control circuit; In real time curent change is sent to the single-chip microcomputer of master-control room 10 li by current sensing means, when needs A.C. contactor is closed or disjunction time, single-chip microcomputer can produce control signal, controls each phase coil power on/off respectively, thus band moving contact completes disjunction action, completes the action of whole A.C. contactor.
Fig. 2 is overall hardware circuit diagram of the present utility model, as shown in Figure 2, A phase current detector 1, B phase current detector 2 and C phase current detector 3 are all connected the input port of single-chip microcomputer, single-chip microcomputer adopts PIC series (such as: can adopt PIC16F87X etc.), the control port of single-chip microcomputer is by connecting optocoupler, be connected with the energising control end of C phase electromagnetic mechanism 9 with three-phase electromagnetic mechanism A phase electromagnetic mechanism 7, B phase electromagnetic mechanism 8, by the break-make of the break-make control coil of triode, thus be reached through Single-chip Controlling coil, complete contact disjunction action.
Above-mentioned Novel AC contactor separating brake method, is characterized in that: concrete steps are as follows:
Step 1: current sensing means Real-Time Monitoring main circuit current changes, and is sent to the single-chip microcomputer of master-control room 10;
Step 2: when contactor carries out disjunction action, single-chip microcomputer judges which phase current first zero passage next time, then using this as main contacts, because action has time delay, needed before this phase current zero passage to the coil electricity of the electromagnetic mechanism inside of this phase, make the iron core disjunction of this phase electromagnetic mechanism, thus make this phase contact disjunction;
Step 3: single-chip microcomputer after a period of time that is energized to this phase electromagnetic mechanism, then makes other two-phases just in time in current zero-crossing point disjunction to the energising of other two-phase electromagnetic mechanisms, thus completes the disjunction action of contactor.
During utility model works: the Real-Time Monitoring main circuit current change respectively of A phase current detector 1, B phase current detector 2, C phase current detector 3, and be sent to the single-chip microcomputer of master-control room 10.When contactor carries out disjunction action, single-chip microcomputer judges which phase current first zero passage next time, for A phase, then using A phase as main contacts, because action has time delay, the coil blackout of A phase electromagnetic mechanism 7 inside given by needs before A phase current zero passage, and the dynamic iron core of A phase electromagnetic mechanism is separated with static iron core.Thus make the disjunction of A phase contact.Single-chip microcomputer after giving A phase electromagnetic mechanism power-off a period of time, then gives B phase electromagnetic mechanism 8, the power-off of C phase electromagnetic mechanism 9 makes B, C two-phase electromagnetic mechanism just in time in current zero-crossing point disjunction, thus completes the disjunction action of contactor.
The utility model has the new type contactor of each phase thick-less vane, by the monitoring of each phase current detector, controls each phase contact respectively in current zero-crossing point disjunction, completes contactor disjunction.Contactor normal safe is run, reaches the object of thick-less vane, reduce the wastage, energy-saving effect is obvious, achieves certain economic benefit, has important practical significance to whole electric system.
Claims (2)
1. a Novel AC contactor, is characterized in that: form primarily of the three-phase independent electromagnetic mechanism be connected with master-control room (10), three-phase contact and three-phase current detection device; Three-phase independent electromagnetic mechanism is connected with master-control room (10) by wire with three-phase current detection device, and three-phase contact is then linked together by steel pole jockey with three-phase independent electromagnetic mechanism; Ge Xiang independent electromagnetic mechanism is by moving iron core, and static iron core and coil form.
2. Novel AC contactor according to claim 1, is characterized in that: three-phase independent electromagnetic mechanism is respectively A phase electromagnetic mechanism (7), B phase electromagnetic mechanism (8) and C phase electromagnetic mechanism (9); Three-phase contact is respectively A phase contact (4), B phase contact (5) and C phase contact (6); Three-phase current detection device is respectively A phase current detector (1), B phase current detector (2), C phase current detector (3); A phase electromagnetic mechanism (7) is all connected with master-control room (10) by wire with C phase current detector (3) with B phase current detector (2) and C phase electromagnetic mechanism (9) with A phase current detector (1), B phase electromagnetic mechanism (8); A phase contact (4) links together by steel pole jockey with C phase electromagnetic mechanism (9) with B phase electromagnetic mechanism (8) and C phase contact (6) with A phase electromagnetic mechanism (7), B phase contact (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420478507.3U CN204289279U (en) | 2014-08-25 | 2014-08-25 | A kind of Novel AC contactor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420478507.3U CN204289279U (en) | 2014-08-25 | 2014-08-25 | A kind of Novel AC contactor |
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| CN204289279U true CN204289279U (en) | 2015-04-22 |
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| CN201420478507.3U Expired - Fee Related CN204289279U (en) | 2014-08-25 | 2014-08-25 | A kind of Novel AC contactor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104157513A (en) * | 2014-08-25 | 2014-11-19 | 沈阳工业大学 | Novel alternating current contactor and switching-off method thereof |
| CN106696729A (en) * | 2016-11-29 | 2017-05-24 | 北京长城华冠汽车科技股份有限公司 | Battery case-separating continuous driving system of electric automobile and electric automobile |
| CN110556267A (en) * | 2019-10-12 | 2019-12-10 | 福州大学 | Self-adaptive synchronous control method of parallel three-phase alternating current contactor |
-
2014
- 2014-08-25 CN CN201420478507.3U patent/CN204289279U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104157513A (en) * | 2014-08-25 | 2014-11-19 | 沈阳工业大学 | Novel alternating current contactor and switching-off method thereof |
| CN106696729A (en) * | 2016-11-29 | 2017-05-24 | 北京长城华冠汽车科技股份有限公司 | Battery case-separating continuous driving system of electric automobile and electric automobile |
| CN110556267A (en) * | 2019-10-12 | 2019-12-10 | 福州大学 | Self-adaptive synchronous control method of parallel three-phase alternating current contactor |
| CN110556267B (en) * | 2019-10-12 | 2021-08-31 | 福州大学 | Self-adaptive synchronous control method of parallel three-phase alternating current contactor |
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| 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: 20150422 Termination date: 20160825 |