CN203895364U - Double-coil energy-saving type contactor power source switch - Google Patents
Double-coil energy-saving type contactor power source switch Download PDFInfo
- Publication number
- CN203895364U CN203895364U CN201420290773.3U CN201420290773U CN203895364U CN 203895364 U CN203895364 U CN 203895364U CN 201420290773 U CN201420290773 U CN 201420290773U CN 203895364 U CN203895364 U CN 203895364U
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- circuit
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- winding
- adhesive
- starting winding
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- 238000004804 winding Methods 0.000 claims abstract description 51
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 13
- 239000000853 adhesive Substances 0.000 claims description 39
- 230000001070 adhesive effect Effects 0.000 claims description 39
- 230000009471 action Effects 0.000 claims description 3
- 230000035939 shock Effects 0.000 abstract description 2
- 239000003990 capacitor Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 238000010891 electric arc Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000002459 sustained effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Motor And Converter Starters (AREA)
Abstract
The utility model relates to a double-coil energy-saving type contactor power source switch. The double-coil energy-saving type contactor power source switch includes a power source input end with an L phase and an N phase, a starting winding, a maintaining winding, a pull-in switch, a rectifying circuit, an anti-interference voltage stabilizing circuit and a follow current circuit; the power source input end is connected with the rectifying circuit through the anti-interference voltage stabilizing circuit; one path of the output end of the rectifying circuit is connected with the input end of the rectifying circuit through the starting winding and the pull-in switch; and the other path of the output end of the rectifying circuit is connected with the input end of the rectifying circuit through the maintaining winding and a first resistor. By means of the above connection modes, interference of an external power grid because of loads such as high current shock in starting can be avoided; the follow current circuit is adopted, the follow current circuit continues to provide short-time follow current for the starting winding when the pull-in switch is switched off, and therefore, reliable pull-in of the starting winding can be realized when a power source is switched on and switched off every time.
Description
Technical field
The utility model is specifically related to the mains switch of a kind of twin coil energy saving type contactor (braking electromagnet, tractive electromagnet).
Background technology
As everyone knows; in electrotechnics; contactor is a kind of automation switch that is used for being switched on or switched off load-carrying alternating current-direct current main circuit or large volume controlled circuit; major control is to liking motor; in addition also for other electrical loads; as electric heater; electric welding machine; lighting apparatus; circuit can not only be connected and cut off to contactor, but also have the effect of low-voltage release guard, and contactor control capacity is large; being applicable to frequent operation and far distance controlled, is one of critical elements in automatic control system.
Those skilled in the art should understand, in the prior art, double-coil contactor at least has starting winding, keeps winding and controls the normally closed switch of starting winding break-make, in the time starting adhesive, normally closed switch is in closure state, starting winding and maintenance winding are connected in circuit, because starting winding conducting wire is thick, resistance is less, and keeps winding conducting wire thin, and resistance is larger, electric current Main Current is through the branch road at starting winding place, therefore starting current is larger, now, the electromagnetic force that the armature of contactor is subject to is enough to overcome the motion of load counter-force; In the time that armature motion arrives apart from the general 1mm～2.2mm in attracted position, normally closed switch is opened, the branch road at starting winding place disconnects, in loop, only keep winding power supply, although now electric current moment reduces, but because armature motion inertia is larger, and air-gap reluctance is less, make armature completely closed therefore keep winding still can produce enough large suction.
Known by foregoing description, because mainly depending on its motional inertia, the final stage of armature adhesive realizes adhesive, but, almost in same time of adhesive, the reaction force of the back-moving spring in contactor impels armature to reset rapidly, extremely unstable while making armature adhesive, and because the effect of motional inertia makes armature also larger to the impact of circuit, easily produce and disturb; In addition, while disconnection due to normally closed switch, as easy as rolling off a log generation arcing phenomenon between contact, corrosion contact, carry out arc extinguishing although mostly adopt the mode of arc-extinguish chamber in prior art, between contact, produce but still not can solve the etching problem that moment of electric arc forms contact, therefore greatly affected the useful life of switch.
Utility model content
The purpose of this utility model is to overcome the defect of prior art, and a kind of shock resistance, the reliable and stable and twin coil energy saving type contactor that can effectively increase the service life are provided.
For achieving the above object, the utility model adopts a kind of twin coil energy saving type contactor, comprising: the power input with L phase and N phase: for the input of direct current or alternating current; Starting winding: for loop being carried out to adhesive or disconnecting action; Keep winding: for keeping loop operation; Adhesive switch: for controlling the break-make of starting winding; Rectification circuit: for alternating current is converted to direct current; Anti-interference voltage stabilizing circuit: comprise the first electric capacity and the first piezo-resistance that are connected in parallel with each other, for absorbing the interference signal of outside line and the impact of the spike of restriction moment, remain attached to the stability of this anti-interference voltage stabilizing circuit components and parts below; Freewheeling circuit: comprise the fly-wheel diode and the second piezo-resistance that are one another in series and connect, for starting winding is carried out to afterflow, realize reliable adhesive; Wherein said power input is connected with rectification circuit via anti-interference voltage stabilizing circuit, a wherein road of the output of described rectification circuit is connected with adhesive switch and with the input of rectification circuit via starting winding successively, and another road of this rectification circuit output end is successively via keeping winding to be connected with the first resistance and with the input of rectification circuit.
Further preferred, twin coil energy saving type A.C. contactor of the present utility model also comprises the switch protecting circuit that is connected in parallel on adhesive switch ends, and this switch protecting circuit has the second resistance and second electric capacity of series connection.
Further preferred again, the two ends of described starting winding are parallel with the 3rd electric capacity.
By the above-mentioned improvement to prior art, twin coil energy saving type A.C. contactor of the present utility model has reached the beneficial effect of following four aspects: first, due to the setting of anti-interference voltage stabilizing circuit, the first electric capacity wherein can effectively absorb the interference signal of outside line, and the first piezo-resistance can effectively limit the impact of the spike of moment, remain attached to the stability of this anti-interference voltage stabilizing circuit components and parts (mainly referring to rectification circuit in the utility model) below; In addition, owing to being parallel with freewheeling circuit on starting winding, in the time that adhesive switch disconnects, armature relies on motional inertia to impel adhesive face closure, and freewheeling circuit is given starting winding power supply one-period with minimum electric current simultaneously, and within this cycle, holding armature continues reliable adhesive, therefore greatly improved the stability of armature adhesive, and the supply current of freewheeling circuit is very little, Power supply, also has certain energy-saving effect relatively; Secondly, this use is novel owing to being parallel with switch protecting circuit at the two ends of adhesive switch, this switch protecting circuit has the second resistance and second electric capacity of series connection, when the moment that adhesive switch disconnects, the second electric capacity can effectively absorb the electric arc that normally closed switch produces, avoid this arc erosion contact, therefore, greatly extended the useful life of adhesive switch and contactor; Finally, for the contactor of some large electric currents, because the strength of return is larger, so need the electric current of adhesive also much larger, depend the motional inertia of freewheeling circuit and armature alone, cannot ensure reliable adhesive, therefore, contactor of the present utility model can be according to actual service conditions and technical parameter, the 3rd electric capacity with respective volume in parallel on starting winding, and the 3rd electric capacity particular capacity can be selected or calculate according to experience.
Brief description of the drawings
Fig. 1 is the circuit theory diagrams of double-coil contactor in prior art.
Fig. 2 is circuit theory diagrams of the present utility model.
Embodiment
Be illustrated in figure 1 the circuit theory diagrams of twin coil energy saving type contactor conventional in prior art, in this figure, show, power supply AC exports via rectification circuit VD, be divided into two-way loop at the output end position of rectification circuit VD, wherein a road is connected into the input of rectification circuit VD with adhesive switch S via starting winding N1, another road is via keeping winding N2 to be connected with resistance R into the input of rectification circuit VD, wherein starts and on winding N1, is parallel with diode VD1; Fig. 2 is the circuit theory diagrams of the twin coil energy saving type contactor of the present embodiment; Fig. 2 comparison diagram 1 is obviously known, and in the present embodiment, described twin coil energy saving type contactor comprises: the power input 1 with L phase and N phase: for the input of direct current or alternating current; Starting winding L 1: for loop being carried out to adhesive or disconnecting action; Keep winding L 2: for keeping loop operation; Adhesive switch S 1: for controlling the break-make of starting winding; Rectification circuit 4: for alternating current is converted to direct current; Anti-interference voltage stabilizing circuit 2: comprise the first capacitor C 1 and the first piezo-resistance RV1 that are connected in parallel with each other, for absorbing the interference signal of outside line and the impact of the spike of restriction moment, remain attached to the stability of this anti-interference voltage stabilizing circuit components and parts below; Freewheeling circuit 3: comprise the sustained diode 2 and the second piezo-resistance RV2 that are one another in series and connect, for starting winding L 1 is carried out to afterflow, realize reliable adhesive.
In Fig. 2, show, described power input 1 is connected with rectification circuit 4 via anti-interference voltage stabilizing circuit 2, a wherein road of the output of described rectification circuit 4 is connected with adhesive switch S 1 and with the input of rectification circuit 4 via starting winding L 1 successively, and another road of these rectification circuit 4 outputs is successively via keeping winding L 2 to be connected with the first resistance R 1 and with the input of rectification circuit 4.Also apparent known from Fig. 2, the twin coil energy saving type contactor of the present embodiment also comprises the switch protecting circuit 5 that is connected in parallel on adhesive switch S 1 two ends, and this switch protecting circuit has the second resistance R 2 and second capacitor C 2 of series connection.In Fig. 2, show, in the present embodiment, starting winding L 1 two ends are also parallel with the 3rd capacitor C 3.
The operation principle of the present embodiment is summarized as follows: when energising, specified AC or DC power supply, absorb the interference signal from outside line through the first capacitor C 1, and the spike of the first piezo-resistance RV1 restriction moment, to protect rectification circuit 4 below, power supply after rectification, part is by the circuit of starting winding L 1 and auxiliary switch S1 series connection, make the adhesive that iron core can be strong rapidly, another loop is by the circuit that keeps winding L 2 and the first resistance R 1 to connect simultaneously, in the process of armature adhesive, driving mechanical link gear, before the complete adhesive of armature is put in place, starting winding L 1 can reliably disconnect, then rely on inertia, add the freewheeling circuit being formed by sustained diode 2 and the second piezo-resistance RV2 of freewheeling circuit 3, make the electric current starting in winding L 1 maintain one-period, continue adhesive, ensure each break-make power supply, reliably adhesive, in the present embodiment, switch protecting circuit 5 has the second resistance R 2 and second capacitor C 2 of series connection, those skilled in the art is obviously known, the second resistance R 2 and second capacitor C 2 of in the present embodiment, connecting form in fact electronic arc eliminating circuit, can effectively absorb adhesive switch S 1 and disconnect the electric arc that moment produces, prevent that electric arc from further corroding the contact of adhesive switch S 1, extend switch useful life, but, for the contactor of some large electric currents, because the strength of return is larger, so need the electric current of adhesive also much larger, depend the motional inertia of freewheeling circuit 3 and armature alone, cannot ensure reliable adhesive, therefore, the contactor of the present embodiment can be according to actual service conditions and technical parameter, and in starting winding L 1, the 3rd capacitor C 3, the three capacitor C 3 particular capacities with respective volume in parallel can be selected or calculate according to experience, after starting winding L 1 power-off, armature reliably puts in place, in this time, keeps winding to switch on always, only needs very little electric current, and just can maintain iron core can return, and therefore the contactor of the present embodiment also reaches energy-conservation object.
More than show and described general principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and specification, describes just illustrates principle of the present utility model; do not departing under the prerequisite of the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The protection range that the utility model requires defines according to appended claim and equivalent thereof.
Claims (3)
1. a twin coil energy saving type contactor mains switch, is characterized in that: comprise
There is the power input of L phase and N phase: for the input of direct current or alternating current;
Starting winding: for loop being carried out to adhesive or disconnecting action;
Keep winding: for keeping loop operation;
Adhesive switch: for controlling the break-make of starting winding;
Rectification circuit: for alternating current is converted to direct current;
Anti-interference voltage stabilizing circuit: comprise the first electric capacity and the first piezo-resistance that are connected in parallel with each other, for absorbing the interference signal of outside line and the impact of the spike of restriction moment, remain attached to the stability of this anti-interference voltage stabilizing circuit components and parts below;
Freewheeling circuit: comprise the fly-wheel diode and the second piezo-resistance that are one another in series and connect, for starting winding is carried out to afterflow, realize reliable adhesive;
Wherein said power input is connected with rectification circuit via anti-interference voltage stabilizing circuit, a wherein road of the output of described rectification circuit is connected with adhesive switch and with the input of rectification circuit via starting winding successively, and another road of this rectification circuit output end is successively via keeping winding to be connected with the first resistance and with the input of rectification circuit.
2. a kind of twin coil energy saving type contactor mains switch according to claim 1, is characterized in that: comprise the switch protecting circuit that is connected in parallel on adhesive switch ends, this switch protecting circuit has the second resistance and second electric capacity of series connection.
3. a kind of twin coil energy saving type contactor mains switch according to claim 2, is characterized in that: the two ends of described starting winding are parallel with the 3rd electric capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420290773.3U CN203895364U (en) | 2014-06-03 | 2014-06-03 | Double-coil energy-saving type contactor power source switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420290773.3U CN203895364U (en) | 2014-06-03 | 2014-06-03 | Double-coil energy-saving type contactor power source switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203895364U true CN203895364U (en) | 2014-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420290773.3U Expired - Lifetime CN203895364U (en) | 2014-06-03 | 2014-06-03 | Double-coil energy-saving type contactor power source switch |
Country Status (1)
| Country | Link |
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| CN (1) | CN203895364U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109728711A (en) * | 2018-12-24 | 2019-05-07 | 广州金升阳科技有限公司 | A kind of contactor electricity saver circuit and its control method |
| CN109818338A (en) * | 2017-11-22 | 2019-05-28 | 湖南中车时代电动汽车股份有限公司 | A kind of circuit protection device and method |
| CN110970262A (en) * | 2019-12-31 | 2020-04-07 | 合肥美的智能科技有限公司 | Drive control device and method for power relay |
| CN113012983A (en) * | 2019-12-20 | 2021-06-22 | 施耐德电气工业公司 | Control device and method for contactor |
-
2014
- 2014-06-03 CN CN201420290773.3U patent/CN203895364U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109818338A (en) * | 2017-11-22 | 2019-05-28 | 湖南中车时代电动汽车股份有限公司 | A kind of circuit protection device and method |
| CN109728711A (en) * | 2018-12-24 | 2019-05-07 | 广州金升阳科技有限公司 | A kind of contactor electricity saver circuit and its control method |
| CN109728711B (en) * | 2018-12-24 | 2020-09-15 | 广州金升阳科技有限公司 | Contactor electricity saver circuit and control method thereof |
| CN113012983A (en) * | 2019-12-20 | 2021-06-22 | 施耐德电气工业公司 | Control device and method for contactor |
| WO2021121400A1 (en) * | 2019-12-20 | 2021-06-24 | 施耐德电气工业公司 | Control device and method for contactor |
| CN113012983B (en) * | 2019-12-20 | 2022-06-03 | 施耐德电气工业公司 | Control device and method for contactor |
| CN110970262A (en) * | 2019-12-31 | 2020-04-07 | 合肥美的智能科技有限公司 | Drive control device and method for power relay |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141022 |