CN111613476A - Control module for alternating current vacuum contactor - Google Patents
Control module for alternating current vacuum contactor Download PDFInfo
- Publication number
- CN111613476A CN111613476A CN202010491573.4A CN202010491573A CN111613476A CN 111613476 A CN111613476 A CN 111613476A CN 202010491573 A CN202010491573 A CN 202010491573A CN 111613476 A CN111613476 A CN 111613476A
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- Prior art keywords
- control module
- circuit
- electrically connected
- alternating current
- output end
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/59—Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the ac cycle
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rectifiers (AREA)
Abstract
The invention discloses a control module for an alternating current vacuum contactor, which belongs to the technical field of alternating current vacuum contactors and comprises a control module, wherein the input end of the control module is electrically connected with the output end of a power supply input, and the output end of the control module is electrically connected with the input end of a power supply output. This control module for alternating current vacuum contactor, through setting up the level voltage starting circuit, utilize piezo-resistor's nonlinear characteristic, absorb unnecessary electric current with sensitive component in the protection circuit, the harmonic that produces in the circuit can be offset each other by bridge rectifier bridge simultaneously, so not only can reduce the harmonic of alternating current input current, also can reduce the harmonic amplitude in the direct current output voltage simultaneously and improve ripple frequency, and absorption capacitor can play similar low pass filter's effect, eliminate the spike voltage that arouses because female stray inductance of arranging, the level voltage starts so has, make switching operation reach the purpose that vacuum no air exposes electric arc, explosion-proof performance is better.
Description
Technical Field
The invention belongs to the technical field of alternating current vacuum contactors, and particularly relates to a control module for an alternating current vacuum contactor.
Background
The vacuum contactor mainly comprises a vacuum arc-extinguishing chamber and an operating mechanism. For switching on and off the main circuit directly or remotely. The main contact works in a high-vacuum environment, so that the three-phase AC motor has the advantages of no exposure of electric arc, small volume, light weight, long service life, long maintenance period and the like, and is suitable for the fields of coal, petroleum, chemical engineering, metallurgy, electric power, machinery, traffic and the like to control a three-phase AC motor or switch on or off other electrical loads.
The conventional vacuum contactor in the market at present still adopts a mechanical switch with an exposed arc air as an auxiliary switch, and the mechanical switch is high in voltage direct current due to breaking, so that the broken arc is large, an auxiliary energy-saving contact is easily burnt, contact failure is caused, abnormal starting, coil burning, load and the like of the vacuum contactor are caused, the service life is short, and meanwhile, the explosion-proof performance is poor.
Disclosure of Invention
Technical problem to be solved
In order to overcome the defects in the prior art, the invention provides a control module for an alternating current vacuum contactor, which solves the problems that the conventional vacuum contactor is high in voltage direct current when being disconnected, large in disconnected electric arc, easy to burn and damage an auxiliary energy-saving contact, poor in contact of the contact, abnormal in starting of the vacuum contactor, coil burning and load burning, short in service life and poor in explosion-proof performance.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: the control module for the alternating current vacuum contactor comprises a control module, wherein the input end of the control module is electrically connected with the output end of a power supply input, and the output end of the control module is electrically connected with the input end of a power supply output.
The control module comprises a constant-voltage starting circuit, the input end of the constant-voltage starting circuit is electrically connected with the output end of the power input, the output end of the constant-voltage starting circuit is electrically connected with the input end of the auxiliary contact circuit, and the output end of the auxiliary contact circuit is electrically connected with the input end of the power output.
As a further scheme of the invention: the output end of the constant voltage starting circuit is electrically connected with the input end of the acousto-optic alarm circuit, and the output end of the acousto-optic alarm circuit is electrically connected with the input end of the auxiliary contact circuit.
As a further scheme of the invention: the constant-voltage starting circuit comprises two piezoresistors, a bridge rectifier bridge, two starting coils and an absorption capacitor, wherein the two ends of each piezoresistor are connected in parallel to the bridge rectifier bridge, the two starting coils are connected in series to the bridge rectifier bridge, and the absorption capacitor is connected in parallel to the bridge rectifier bridge.
As a further scheme of the invention: the auxiliary contact circuit comprises an auxiliary contact, two maintaining coils and a diode, wherein the auxiliary contact is electrically connected with two ends of the absorption capacitor, two ends of the auxiliary contact are electrically connected with one ends of the two maintaining coils, and the other ends of the two maintaining coils are electrically connected with two ends of the diode.
(III) advantageous effects
Compared with the prior art, the invention has the beneficial effects that:
1. this control module for alternating current vacuum contactor, through setting up the constant voltage starting circuit, utilize piezo-resistor's nonlinear characteristic, carry out voltage clamping to the circuit that bears the excessive pressure, absorb unnecessary electric current with sensitive component in the protection circuit, the harmonic that produces in the circuit can be offset each other by bridge rectifier bridge simultaneously, so not only can reduce the harmonic of exchanging input current, also can reduce the harmonic amplitude in the direct current output voltage simultaneously and improve the ripple frequency, and absorption capacitor can play similar low pass filter's effect, eliminate the spike voltage that arouses because female stray inductance of arranging, the constant voltage starts so has, make switching operation reach the purpose that vacuum no air exposes electric arc, explosion-proof performance is better.
2. This control module for alternating current vacuum contactor through setting up the auxiliary contact circuit, under auxiliary contact, maintaining coil and diode three's the mutually supporting, prevents the auxiliary contact scaling loss, causes contact failure, avoids the problem that vacuum contactor started unusually, burns coil and load to guaranteed that vacuum contactor is under-voltage not to burn the coil, operating life is longer.
3. This control module for AC vacuum contactor through setting up audible and visual alarm circuit, very big having made things convenient for tour personnel and central control personnel to discover trouble vacuum contactor, has expanded the field of use, and the vacuum contactor who has adopted special control module can be widely used in photovoltaic power generation, wind power generation and the occasion of high reliability.
Drawings
FIG. 1 is a block diagram illustrating the operational status of an AC vacuum contactor according to the present invention;
FIG. 2 is a circuit diagram of a control module of the present invention, wherein TUR14821 is a voltage dependent resistor, ZL is a bridge rectifier bridge, QI is a start coil, C is an absorption capacitor, CKJ is an auxiliary contact, QII is a sustain coil, and D is a diode;
in the figure: the device comprises a control module 1, a power input 2, a power output 3, a constant-voltage starting circuit 4, an auxiliary contact circuit 5 and an audible and visual alarm circuit 6.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
As shown in fig. 1-2, the present invention provides a technical solution: a control module for an alternating current vacuum contactor comprises a control module 1, wherein the input end of the control module 1 is electrically connected with the output end of a power input 2, and the output end of the control module 1 is electrically connected with the input end of a power output 3.
The control module 1 comprises a constant voltage starting circuit 4, the input end of the constant voltage starting circuit 4 is electrically connected with the output end of the power input 2, the output end of the constant voltage starting circuit 4 is electrically connected with the input end of the auxiliary contact circuit 5, and the output end of the auxiliary contact circuit 5 is electrically connected with the input end of the power output 3.
The output end of the constant voltage starting circuit 4 is electrically connected with the input end of the sound-light alarm circuit 6, and the output end of the sound-light alarm circuit 6 is electrically connected with the input end of the auxiliary contact circuit 5.
The constant-voltage starting circuit 4 comprises two piezoresistors, a bridge rectifier bridge, two starting coils and an absorption capacitor, wherein two ends of the two piezoresistors are connected in parallel to the bridge rectifier bridge, the two starting coils are connected in series to the bridge rectifier bridge, and the absorption capacitor is connected in parallel to the bridge rectifier bridge.
The auxiliary contact circuit 5 includes an auxiliary contact, a holding coil, and a diode, the auxiliary contact is electrically connected to both ends of the absorption capacitor, both ends of the auxiliary contact are electrically connected to one ends of the two holding coils, and the other ends of the two holding coils are electrically connected to both ends of the diode.
Through setting up level voltage starting circuit 4, utilize the nonlinear characteristic of piezo-resistor, carry out voltage clamping to the circuit that bears the excessive pressure, absorb unnecessary electric current with sensitive component in the protection circuit, the harmonic that produces in the circuit can be offset each other by bridge rectifier bridge simultaneously, so not only can reduce the harmonic of interchange input current, also can reduce the harmonic amplitude in the direct current output voltage simultaneously and improve ripple frequency, and absorption capacitor can play similar low pass filter's effect, eliminate the spike voltage that arouses because female stray inductance of arranging, level voltage starting has been so, make switching operation reach the purpose that vacuum no air exposes electric arc, explosion-proof performance is better.
Through setting up auxiliary contact circuit 5, under auxiliary contact, maintaining coil and diode three's the mutually supporting, prevent auxiliary contact scaling loss, cause contact failure, avoid vacuum contactor to start the problem unusual, that burn coil and load to guaranteed that vacuum contactor is under-voltage not burn the coil, operating life is longer.
Through setting up audible and visual alarm circuit 6, very big having made things convenient for tour personnel and central control personnel to discover trouble vacuum contactor, having expanded the field of use, the vacuum contactor who has adopted special control module 1 can be widely used in photovoltaic power generation, wind power generation and the occasion of high reliability.
The working principle of the invention is as follows:
s1, when in use, under the action of the control module 1, after the power supply is switched on, the voltage dependent resistor clamps the voltage of the circuit bearing overvoltage, absorbs redundant current, then the harmonic waves generated in the circuit are mutually counteracted by the bridge rectifier bridge, the harmonic waves of the alternating current input current are reduced, finally the absorption capacitor eliminates the peak voltage caused by the stray inductance of the busbar, and the input voltage and the circuit are limited in multiple directions, so that the voltage and the current in the circuit can smoothly pass through the auxiliary contact, the maintaining coil and the diode and enter other elements from the power supply output 3;
s2, when the AC vacuum contactor is damaged, the sound-light alarm circuit 6 triggers an alarm to send out a harsh buzzer to remind patrolling personnel and central control personnel.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.
Claims (4)
1. A control module for an AC vacuum contactor, comprising a control module (1), characterized in that: the input end of the control module (1) is electrically connected with the output end of the power input (2), and the output end of the control module (1) is electrically connected with the input end of the power output (3);
the control module (1) comprises a constant-voltage starting circuit (4), the input end of the constant-voltage starting circuit (4) is electrically connected with the output end of the power input (2), the output end of the constant-voltage starting circuit (4) is electrically connected with the input end of the auxiliary contact circuit (5), and the output end of the auxiliary contact circuit (5) is electrically connected with the input end of the power output (3).
2. The control module of claim 1, wherein: the output end of the constant voltage starting circuit (4) is electrically connected with the input end of the sound-light alarm circuit (6), and the output end of the sound-light alarm circuit (6) is electrically connected with the input end of the auxiliary contact circuit (5).
3. The control module of claim 1, wherein: the constant-voltage starting circuit (4) comprises two piezoresistors, a bridge rectifier bridge, two starting coils and an absorption capacitor, wherein the two ends of each piezoresistor are connected in parallel to the bridge rectifier bridge, the two starting coils are connected in series to the bridge rectifier bridge, and the absorption capacitor is connected in parallel to the bridge rectifier bridge.
4. The control module of claim 3, wherein: the auxiliary contact circuit (5) comprises an auxiliary contact, two maintaining coils and a diode, wherein the auxiliary contact is electrically connected with two ends of the absorption capacitor, two ends of the auxiliary contact are electrically connected with one ends of the two maintaining coils, and the other ends of the two maintaining coils are electrically connected with two ends of the diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010491573.4A CN111613476A (en) | 2020-06-02 | 2020-06-02 | Control module for alternating current vacuum contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010491573.4A CN111613476A (en) | 2020-06-02 | 2020-06-02 | Control module for alternating current vacuum contactor |
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| Publication Number | Publication Date |
|---|---|
| CN111613476A true CN111613476A (en) | 2020-09-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010491573.4A Pending CN111613476A (en) | 2020-06-02 | 2020-06-02 | Control module for alternating current vacuum contactor |
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| CN (1) | CN111613476A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2318706Y (en) * | 1998-04-21 | 1999-05-12 | 冯伟 | Control device for vacuum contactor |
| DE10158318A1 (en) * | 2001-11-28 | 2003-06-18 | Siemens Ag | Coil circuit e.g. for electromechanical switching devices, includes switching unit with interface for opening switching unit when working voltage fails to achieve limiting level |
| CN201219086Y (en) * | 2008-01-19 | 2009-04-08 | 叶金来 | Material-saving high-breaking vacuum contactor |
| CN201262922Y (en) * | 2008-07-25 | 2009-06-24 | 上海市城市排水市南运营有限公司 | Electricity-saving muffler device of AC contactor |
| CN202110996U (en) * | 2011-06-22 | 2012-01-11 | 无锡市蓝虹电子有限公司 | Control module special for alternating current vacuum contactor |
| CN104362041A (en) * | 2014-11-18 | 2015-02-18 | 成都海沃斯电气技术有限公司 | Passive control circuit of alternating-current contactor |
| CN205335173U (en) * | 2016-01-22 | 2016-06-22 | 洛阳晨诺电气有限公司 | Electric capacity voltage divider control circuit of AC vacuum contactor coil |
-
2020
- 2020-06-02 CN CN202010491573.4A patent/CN111613476A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2318706Y (en) * | 1998-04-21 | 1999-05-12 | 冯伟 | Control device for vacuum contactor |
| DE10158318A1 (en) * | 2001-11-28 | 2003-06-18 | Siemens Ag | Coil circuit e.g. for electromechanical switching devices, includes switching unit with interface for opening switching unit when working voltage fails to achieve limiting level |
| CN201219086Y (en) * | 2008-01-19 | 2009-04-08 | 叶金来 | Material-saving high-breaking vacuum contactor |
| CN201262922Y (en) * | 2008-07-25 | 2009-06-24 | 上海市城市排水市南运营有限公司 | Electricity-saving muffler device of AC contactor |
| CN202110996U (en) * | 2011-06-22 | 2012-01-11 | 无锡市蓝虹电子有限公司 | Control module special for alternating current vacuum contactor |
| CN104362041A (en) * | 2014-11-18 | 2015-02-18 | 成都海沃斯电气技术有限公司 | Passive control circuit of alternating-current contactor |
| CN205335173U (en) * | 2016-01-22 | 2016-06-22 | 洛阳晨诺电气有限公司 | Electric capacity voltage divider control circuit of AC vacuum contactor coil |
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Application publication date: 20200901 |
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| RJ01 | Rejection of invention patent application after publication |