CN204441194U - A kind of connecting circuit of A.C. contactor spark management device - Google Patents
A kind of connecting circuit of A.C. contactor spark management device Download PDFInfo
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- CN204441194U CN204441194U CN201520033867.7U CN201520033867U CN204441194U CN 204441194 U CN204441194 U CN 204441194U CN 201520033867 U CN201520033867 U CN 201520033867U CN 204441194 U CN204441194 U CN 204441194U
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- Prior art keywords
- contactor
- circuit
- logic control
- control
- management device
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- 229910052710 silicon Inorganic materials 0.000 claims abstract description 27
- 239000010703 silicon Substances 0.000 claims abstract description 27
- 238000005070 sampling Methods 0.000 claims abstract description 14
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 26
- 239000000853 adhesive Substances 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 5
- 230000006837 decompression Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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Abstract
The utility model discloses a kind of connecting circuit of A.C. contactor spark management device, power circuit andlogic control IC and A.C. contactor are connected to provide power supply, the collection point of alternating current sampling circuit is the zero crossing of A.C. contactor input alternating voltage, logic control IC adopts CMOS integrated circuit, be responsible for the logic control of all circuit, drive circuit is connected with A.C. contactor the action controlling A.C. contactor after the control signal of logic control IC being amplified, and controllable silicon and A.C. contactor are connected in parallel in load circuit.The utility model can be A.C. contactor spark management device and provides a hardware platform, it can directly be installed on existing A.C. contactor, change without the need to doing other, such A.C. contactor does not produce the object of arc spark when other arc-control devices or arc extinguishing technology can not be adopted to reach action, and its working life significantly can be improved, A.C. contactor manufacturing cost and volume can be reduced simultaneously.
Description
Technical field
The utility model relates to a kind of A.C. contactor spark management device, particularly a kind of connecting circuit of A.C. contactor spark management device.
Background technology
Along with the development of power industry, more and more higher requirement is also proposed to power equipment.A large amount of A.C. contactor can be used in electrical production life, but cause contact to damage due to A.C. contactor arc spark at work, make the electrical endurance of A.C. contactor very short, usually only have 1/10th of its mechanical endurance even less.Current A.C. contactor is all extend its life-span by installing arc-control device additional, is not only difficult to accomplish real do not produce electric arc, but also can increase A.C. contactor volume and increase manufacturing cost.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art part, there is provided one can allow during A.C. contactor action and do not produce pyrophoric device, A.C. contactor manufacturing cost can be reduced simultaneously, reduce volume and extend the connecting circuit of a kind of A.C. contactor spark management device of its working life.
A kind of connecting circuit of A.C. contactor spark management device, its structural feature is: include power circuit, alternating current sampling circuit, logic control IC, drive circuit, controllable silicon and A.C. contactor, described power circuit andlogic control IC and A.C. contactor are connected to provide power supply, the collection point of alternating current sampling circuit is the zero crossing of A.C. contactor input alternating voltage, logic control IC adopts CMOS integrated circuit, be responsible for the logic control of all circuit, namely receive alternating voltage zero-crossing point signal and control controllable silicon, A.C. contactor action, drive circuit is connected with A.C. contactor the action controlling A.C. contactor after the control signal of logic control IC being amplified, controllable silicon and A.C. contactor are connected in parallel in load circuit, controllable silicon is used for the break-make of supplementary AC contactor.
The connecting circuit of a kind of A.C. contactor spark management device of the present utility model, can be A.C. contactor spark management device and a hardware platform is provided, by the mutual operational relationship of parts each in connecting circuit, in conjunction with corresponding instruction and the control of A.C. contactor spark management device, thus realize the circuit turn-on of A.C. contactor spark management device and turn off all in the action of alternating voltage zero-crossing point, and the arc spark produced when eliminating A.C. contactor action further by controllable silicon supplementary AC contactor break-make, pyrophoric object is not produced when so just reaching A.C. contactor action.
In described power circuit, comprise the A/D convertor circuit and the two poles of the earth reduction voltage loop that are connected to each other, reduction voltage loop adopts capacitance decompression, 220V ac voltage rectifier is depressured to direct current 24V to supply A.C. contactor DC coil and be used for controlling A.C. contactor action, then becomes direct current 5V to provide power supply for logic control IC by resistance step-down.
Described alternating current sampling circuit is made up of resistance R3 and electric capacity C1, when alternating voltage zero-crossing, produces triggering signal, is used for gathering the zero crossing of alternating voltage, controls the Rule of judgment of controllable silicon and A.C. contactor as logic control IC.
Described drive circuit is made up of resistance R1 and triode Q2, and logic control IC controls A.C. contactor DC coil by triggering drive circuit, realizes A.C. contactor adhesive and release.
Described logic control IC is CMOS integrated circuit, 16 single-chip microcomputers can be adopted, when needs control A.C. contactor and controllable silicon action, logic control IC first receives alternating voltage zero-crossing point triggering signal by alternating current sampling circuit, controllable silicon action and drive circuit is controlled by receiving triggering signal, drive circuit controls A.C. contactor action further, and its major function has been exactly collection and the sequential output processing of synchronizing signal.
In sum, the utility model following advantage compared to existing technology:
The connecting circuit of the utility model A.C. contactor spark management device, can be A.C. contactor spark management device and a hardware platform is provided, it can directly be installed on existing A.C. contactor, change without the need to doing other, such A.C. contactor does not produce the object of arc spark when other arc-control devices or arc extinguishing technology can not be adopted to reach action, and its working life significantly can be improved, A.C. contactor manufacturing cost and volume can be reduced simultaneously.
Accompanying drawing explanation
Fig. 1 is the connecting circuit functional-block diagram of A.C. contactor spark management device of the present utility model.
Fig. 2 is a kind of circuit diagram of A.C. contactor spark management device.
Fig. 3 is the action timing diagram of A.C. contactor spark management device.
Label declaration: 1 power circuit 2 alternating current sampling circuit 3 drive circuit.
Embodiment
Below in conjunction with embodiment, the utility model is described in more detail.
Embodiment 1
As shown in Figure 1, the utility model provides a kind of connecting circuit of A.C. contactor spark management device, and its circuit is made up of power circuit 1, alternating current sampling circuit 2, logic control IC, drive circuit 3, controllable silicon and A.C. contactor.Its power circuit 1 provides power supply for logic control IC, A.C. contactor.Alternating current sampling circuit 2 gathers the zero crossing of ac voltage signal.Logic control IC is responsible for all logic controls, namely receives alternating voltage zero-crossing point signal and controls controllable silicon, A.C. contactor action.Drive circuit controls the action of A.C. contactor after the control signal of logic control IC being amplified.
As shown in Figure 2: in connecting circuit, power supply takes from the alternating current 220V power supply of A.C. contactor input, power circuit 1 is by electric capacity C6 step-down, resistance R5 current limliting, through diode D2 rectification, then the direct voltage of-24V is exported through the D1 voltage stabilizing of direct current 24V voltage-stabiliser tube and electrochemical capacitor C3 filtering, the negative terminal of this voltage supply A.C. contactor DC coil, D3 discharges to high-voltage capacitance C6 in the other half period of alternating voltage.-24V voltage produces the power end VEE of-5V voltage supply logic control IC again by resistance R4, electric capacity C4 and C5; Alternating current sampling circuit 2 is through resistance R3 and electric capacity C1 filtering by alternating current 220V voltage, the square-wave voltage of high level 0V, low level-5V is exported after filtering, the triggering signal of a rising edge or trailing edge can be produced when the zero crossing of alternating voltage, control A.C. contactor and silicon controlled Rule of judgment as logic control IC; Drive circuit 3 be by logic control IC by resistance R1 and triode Q2 by control signal amplify after control A.C. contactor deciliter.Controllable silicon conducting within the short time of A.C. contactor adhesive, release, its ON time is early than A.C. contactor, and the turn-off time is later than A.C. contactor.So just can ensure that A.C. contactor can not produce arc spark when the zero crossing action of alternating voltage.
As shown in Figure 3: A.C. contactor and controllable silicon are conducting state when low level, be off state during high level, control signal is conducting state when high level, and low level turns off.The every 10ms of alternating current sampling circuit will produce a triggering signal (alternating current voltage frequency is 50HZ, per second have 100 voltage over zero).When needs adhesive A.C. contactor, logic control IC sends high level continuity signal conducting controllable silicon and A.C. contactor when alternating voltage zero-crossing point being detected, due to silicon controlled operate time, faster than A.C. contactor, (controllable silicon operate time is μ s level greatly, A.C. contactor operate time is ms level), so controllable silicon is in conducting state when the real adhesive in the contact of A.C. contactor, when logic control IC judges to need switching off load, send cut-off signals at alternating voltage zero-crossing point and turn off A.C. contactor at once, first voltage over zero detected after time delay 20ms turns off controllable silicon, ensure that A.C. contactor closes to have no progeny completely and pass through switching off load of controlled silicon again.
It is same as the prior art that the present embodiment does not state part.
Claims (5)
1. the connecting circuit of an A.C. contactor spark management device, it is characterized in that: include power circuit, alternating current sampling circuit, logic control IC, drive circuit, controllable silicon and A.C. contactor, described power circuit andlogic control IC and A.C. contactor are connected to provide power supply, the collection point of alternating current sampling circuit is the zero crossing of A.C. contactor input alternating voltage, logic control IC adopts CMOS integrated circuit, be responsible for the logic control of all circuit, namely receive alternating voltage zero-crossing point signal and control controllable silicon, A.C. contactor action, drive circuit is connected with A.C. contactor the action controlling A.C. contactor after the control signal of logic control IC being amplified, controllable silicon and A.C. contactor are connected in parallel in load circuit, controllable silicon is used for the break-make of supplementary AC contactor.
2. the connecting circuit of A.C. contactor spark management device according to claim 1, it is characterized in that: in described power circuit, comprise the A/D convertor circuit and the two poles of the earth reduction voltage loop that are connected to each other, reduction voltage loop adopts capacitance decompression, 220V ac voltage rectifier is depressured to direct current 24V to supply A.C. contactor DC coil and be used for controlling A.C. contactor action, then becomes direct current 5V to provide power supply for logic control IC by resistance step-down.
3. the connecting circuit of A.C. contactor spark management device according to claim 2, it is characterized in that: described alternating current sampling circuit is made up of resistance R3 and electric capacity C1, when alternating voltage zero-crossing, produce triggering signal, be used for gathering the zero crossing of alternating voltage, control the Rule of judgment of controllable silicon and A.C. contactor as logic control IC.
4. the connecting circuit of A.C. contactor spark management device according to claim 3, it is characterized in that: described drive circuit is made up of resistance R1 and triode Q2, logic control IC controls A.C. contactor DC coil by triggering drive circuit, realizes A.C. contactor adhesive and release.
5. the connecting circuit of A.C. contactor spark management device according to claim 4, it is characterized in that: described logic control IC is CMOS integrated circuit, multidigit single-chip microcomputer can be adopted, when needs control A.C. contactor and controllable silicon action, logic control IC first receives alternating voltage zero-crossing point triggering signal by alternating current sampling circuit, controllable silicon action and drive circuit is controlled by receiving triggering signal, drive circuit controls A.C. contactor action further, and its major function has been exactly collection and the sequential output processing of synchronizing signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520033867.7U CN204441194U (en) | 2015-01-19 | 2015-01-19 | A kind of connecting circuit of A.C. contactor spark management device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520033867.7U CN204441194U (en) | 2015-01-19 | 2015-01-19 | A kind of connecting circuit of A.C. contactor spark management device |
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| Publication Number | Publication Date |
|---|---|
| CN204441194U true CN204441194U (en) | 2015-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520033867.7U Expired - Fee Related CN204441194U (en) | 2015-01-19 | 2015-01-19 | A kind of connecting circuit of A.C. contactor spark management device |
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| CN (1) | CN204441194U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104576206A (en) * | 2015-01-19 | 2015-04-29 | 国家电网公司 | Spark control device of alternating current contactor |
-
2015
- 2015-01-19 CN CN201520033867.7U patent/CN204441194U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104576206A (en) * | 2015-01-19 | 2015-04-29 | 国家电网公司 | Spark control device of alternating current contactor |
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| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20150701 Termination date: 20220119 |
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| CF01 | Termination of patent right due to non-payment of annual fee |