CN101630831A - Electromagnetic undervoltage release - Google Patents
Electromagnetic undervoltage release Download PDFInfo
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- CN101630831A CN101630831A CN200910183845A CN200910183845A CN101630831A CN 101630831 A CN101630831 A CN 101630831A CN 200910183845 A CN200910183845 A CN 200910183845A CN 200910183845 A CN200910183845 A CN 200910183845A CN 101630831 A CN101630831 A CN 101630831A
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Abstract
The invention relates to the technical field of undervoltage releases, in particular to an electromagnetic undervoltage release which is provided with a forced start-up circuit; the forced start-up circuit comprises a filter circuit connected with a power grid, a voltage-reduction capacitor, a bridge rectification circuit, a start-up capacitor, an energy-storage voltage detection circuit for detecting the voltage of the start-up capacitor, a power grid voltage detection circuit for detecting the voltage of the power grid, a control circuit and a system power circuit for supplying power to the control circuit; the output end of the filter circuit is serially connected with the voltage-reduction circuit and then connected with the bridge rectification circuit, the output end of the bridge rectification circuit is connected with the anode of the start-up capacitor and an electromagnetic coil, the cathode of the start-up capacitor is grounded, the other end of the electromagnetic coil is serially connected with a switch circuit controlled by the control circuit, and the other end of the switch circuit is grounded; and the output ends of the energy-storage voltage detection circuit and the power grid voltage detection circuit are connected with the input end of the control circuit. The invention solves the technical problems that the coil has large heating quantity, the starting torque of the undervoltage release is small, the circuits are excessively complex, and the like in the prior electromagnetic undervoltage release.
Description
Technical field
The present invention relates to the device for under-voltage releasing equipment technical field, especially a kind of electromagnetic undervoltage release.
Background technology
Device for under-voltage releasing equipment is the core component in the low tension switch, and the working method that device for under-voltage releasing equipment drives push rod has two types of electromagnetic type and permanent-magnet types.
Compare with the permanent-magnet type device for under-voltage releasing equipment, it is simple that electromagnetic undervoltage release has a circuit, and after the outage, push rod has " resetting certainly " ability under the effect of spring force.
Existing electromagnetic undervoltage release ubiquity coil heating amount height, the little or circuit of device for under-voltage releasing equipment staring torque be problem such as complexity too.
Summary of the invention
The technical problem to be solved in the present invention is: solve existing electromagnetic undervoltage release caloric value height, little or the circuit of the staring torque technical problem of complexity etc. too during undervoltage tripping, the invention provides a kind of electromagnetic undervoltage release, it is little that it has caloric value, starting torque is big, is applicable to the undervoltage tripping occasion of various low tension switch requirements such as self-priming, Sucking-assisting type.
The technical solution adopted for the present invention to solve the technical problems is: a kind of electromagnetic undervoltage release, have strong start-up circuit, described strong start-up circuit comprises filter circuit, decompression capacitor, bridge rectifier, startup electric capacity, the network voltage detection circuit of depositing energy testing circuit, detection of grid voltage, the control circuit that detect start-up circuit voltage and the system power supply circuit of powering to control circuit that is connected with electrical network; Connect bridge rectifier behind the output serial connection decompression capacitor of filter circuit, the output termination of bridge rectifier starts capacitor anode and solenoid, the minus earth of electric capacity, another termination serial connection one of solenoid is by the switching circuit of control circuit control, the other end ground connection of switching circuit, depositing can voltage detecting circuit and the output connection control circuit input of network voltage detection circuit.
Electromagnetic undervoltage release starts the instantaneous mechanical inertia of desiring to overcome " push rod ", in-house frictional force, the reaction force of load in " dropout ".Among the present invention, line voltage behind step-down electricity capacitance decompression, converts direct voltage through bridge rectifier through filter circuit, then to starting the electric capacity charging.Started electric capacity before the normally opened contact of switching circuit is not closed, be charged to certain numerical value in advance, can detect its magnitude of voltage by voltage detecting circuit, and after judging that this numerical value satisfies " the strong startup " condition, signal send control circuit by depositing.Normally opened contact closed moment starts that electric charge all is released to solenoid on the electric capacity, plays " the strong startup " purpose.Afterwards, start the filter function of electric capacity performance electric capacity.Before normally opened contact is not closed, to starting the electric capacity charging, finishes depositing of strong startup and can prepare by decompression capacitor.After the normally opened contact closure, the voltage on the solenoid has the size decision of the capacity of decompression capacitor, and decompression capacitor do not produce active power, and the whole caloric value of device for under-voltage releasing equipment is little.Control circuit of the present invention adopts " two condition " to judge, whether needs " action " except judging the signal that the network voltage detection circuit is sent here, judges the signal of " depositing the energy testing circuit " when release starts simultaneously.Both satisfied the countries concerned's standard of undervoltage tripping, realized again that big moment started.Decompression capacitor is serially connected in ac circuit, does not consume active power.Start electric capacity enough energy (staring torque) are provided for the device for under-voltage releasing equipment coil is instantaneous.
For reaching good filtering effect, further: described filter circuit is by two electric capacity and the π type filter circuit that inductance is formed.
Be to reduce the caloric value of electromagnetic undervoltage release, the input of described network voltage detection circuit is connected in series the output that connects filter circuit behind the first halfwave rectifier diode; The input of described system power supply circuit is connected in series the negative pole that connects the first halfwave rectifier diode behind the second halfwave rectifier diode.
The invention has the beneficial effects as follows electromagnetic undervoltage release of the present invention, advantage such as it is little to have caloric value, and dropout instantaneous starting moment is big, and circuit is simple.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the structural representation of the embodiment of electromagnetic undervoltage release of the present invention.
1. filter circuits among the figure, CK. decompression capacitor, BG1. bridge rectifier, CS. start electric capacity, 2. deposit energy testing circuit, 3. network voltage detection circuit, 4. control circuit, 5. system power supply circuit, 6. switching circuit, 7. solenoid, CL1. first electric capacity, CL2. second electric capacity, L1. inductance, D1. the first halfwave rectifier diode, the D2. second halfwave rectifier diode.
Embodiment
In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are the schematic diagram of simplification, basic structure of the present invention only is described in a schematic way, so it only show the formation relevant with the present invention.
The embodiment of electromagnetic undervoltage release of the present invention as shown in Figure 1, have strong start-up circuit, described strong start-up circuit comprises filter circuit 1, decompression capacitor CK, the bridge rectifier BG1 that is connected with electrical network, the network voltage detection circuit 3 of depositing energy testing circuit 2, detection of grid voltage, the control circuit 4 that start capacitor C S, detection startup capacitance voltage and the system power supply circuit 5 of powering to control circuit 4; Filter circuit 1 is by the first capacitor C L1, the second capacitor C L2 and the π type filter circuit that inductance L 1 is formed.Meet bridge rectifier BG1 behind the output serial connection decompression capacitor CK of filter circuit 1, the output termination of bridge rectifier BG1 starts anode and the solenoid 7 of capacitor C S, start the minus earth of capacitor C S, another termination serial connection one of solenoid 7 is by the switching circuit 6 of the normally opened contact of control circuit 4 controls, the other end ground connection of switching circuit 6, depositing can voltage detecting circuit 2 and output connection control circuit 4 inputs of network voltage detection circuit 3.The input of network voltage detection circuit 3 is connected in series the output that connects filter circuit 1 behind the first halfwave rectifier diode D1.The input of system power supply circuit 5 is connected in series the negative pole that meets the first halfwave rectifier diode D1 behind the second halfwave rectifier diode D2.Control circuit 4 is for single-chip microcomputer with signal operation and disposal ability etc.
Electromagnetic undervoltage release is starting the instantaneous mechanical inertia of desiring to overcome " push rod ", in-house frictional force, the reaction force of load.Among the present invention, line voltage after the decompression capacitor step-down, converts direct voltage through bridge rectifier through filter circuit, then to starting the electric capacity charging.Started electric capacity before the normally opened contact of switching circuit is not closed, be charged to certain numerical value in advance, can detect its magnitude of voltage by voltage detecting circuit, and after judging that this numerical value satisfies " the strong startup " condition, signal send control circuit by depositing.Normally opened contact closed moment starts that electric charge all is released to solenoid on the electric capacity, plays " the strong startup " purpose.Afterwards, start the filter function of electric capacity performance electric capacity.Before normally opened contact is not closed, to starting the electric capacity charging, finishes depositing of strong startup and can prepare by decompression capacitor.After the normally opened contact closure, the voltage on the solenoid has the size decision of the capacity of decompression capacitor, and decompression capacitor do not produce active power, and the whole caloric value of device for under-voltage releasing equipment is little.The present invention adopts " two condition " to judge, whether control circuit needs " action " except the signal of judging the network voltage detection circuit and sending here, judges that simultaneously device for under-voltage releasing equipment must establish the signal of " depositing the energy voltage detecting circuit " when beginning by cable.Both satisfied the countries concerned's standard of device for under-voltage releasing equipment, realized again that big moment started.
The system power supply circuit of halfwave rectifier is compared with full-wave circuit, and power consumption has reduced half, has also reduced caloric value.
With above-mentioned foundation desirable embodiment of the present invention is enlightenment, and by above-mentioned description, the related work personnel can carry out various change and modification fully in the scope that does not depart from this invention technological thought.The technical scope of this invention is not limited to the content on the specification, must determine its technical scope according to the claim scope.
Claims (4)
1. electromagnetic undervoltage release, have strong start-up circuit, it is characterized in that: described strong start-up circuit comprises filter circuit (1), decompression capacitor (CK), bridge rectifier (BG1), startup electric capacity (CS), the network voltage detection circuit (3) of depositing energy testing circuit (2), detection of grid voltage, the control circuit (4) that detect the startup capacitance voltage and the system power supply circuit (5) of powering to control circuit (4) that is connected with electrical network; Connect bridge rectifier (BG1) behind the output serial connection decompression capacitor (CK) of filter circuit (1), the output termination of bridge rectifier (BG1) starts the anode and the solenoid (7) of electric capacity (CS), start the minus earth of electric capacity (CS), another termination serial connection one of solenoid (7) is by the switching circuit (6) of control circuit (4) control, the other end ground connection of switching circuit (6), depositing can voltage detecting circuit (2) and output connection control circuit (4) input of network voltage detection circuit (3).
2. a kind of electromagnetic undervoltage release according to claim 1 is characterized in that: the π type filter circuit of described filter circuit (1) for being made up of first electric capacity (CL1), second electric capacity (CL2) and an inductance (L1).
3. a kind of electromagnetic undervoltage release according to claim 1 is characterized in that: the input of described network voltage detection circuit (3) is connected in series the output that connects filter circuit (1) behind the first halfwave rectifier diode (D1).
4. a kind of electromagnetic undervoltage release according to claim 3 is characterized in that: the input of described system power supply circuit (4) is connected in series the negative pole that connects the first halfwave rectifier diode (D1) behind the second halfwave rectifier diode (D2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101838458A CN101630831B (en) | 2009-08-03 | 2009-08-03 | Electromagnetic undervoltage release |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101838458A CN101630831B (en) | 2009-08-03 | 2009-08-03 | Electromagnetic undervoltage release |
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| CN101630831A true CN101630831A (en) | 2010-01-20 |
| CN101630831B CN101630831B (en) | 2011-12-07 |
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| CN2009101838458A Active CN101630831B (en) | 2009-08-03 | 2009-08-03 | Electromagnetic undervoltage release |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102543604A (en) * | 2012-02-16 | 2012-07-04 | 常州工学院 | Direct current shunt release applicable to operation in series connection with direct current relay |
| CN102568963A (en) * | 2012-02-16 | 2012-07-11 | 常州工学院 | Alternating current shunt tripper suitable for working with alternating current relay in series |
| CN102709127A (en) * | 2012-05-30 | 2012-10-03 | 江苏国星电器有限公司 | Low-voltage alternating current/direct current general under-voltage tripper |
| CN102709129A (en) * | 2012-06-26 | 2012-10-03 | 江苏国星电器有限公司 | Permanent magnet undervoltage tripping device |
| CN102709874A (en) * | 2012-05-30 | 2012-10-03 | 江苏国星电器有限公司 | High-voltage under-voltage release |
| CN102768923A (en) * | 2012-07-02 | 2012-11-07 | 常州工学院 | Undervoltage tripper and working method thereof |
| CN102768924A (en) * | 2012-07-02 | 2012-11-07 | 常州工学院 | Undervoltage tripper with low power consumption and applicable to three-phase supply |
| CN102856131A (en) * | 2012-07-02 | 2013-01-02 | 常州工学院 | Undervoltage tripping device suitable for three-phase supply |
| CN104377644A (en) * | 2012-07-02 | 2015-02-25 | 常州工学院 | Undervoltage tripping device |
| CN104377645A (en) * | 2012-07-02 | 2015-02-25 | 常州工学院 | Low-power-consumption undervoltage tripper |
| CN104392869A (en) * | 2012-07-02 | 2015-03-04 | 常州工学院 | Undervoltage release |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2586276Y (en) * | 2002-12-11 | 2003-11-12 | 邱长发 | Low-voltage protector of electronic a.c 220V switching gear |
| CN101477919B (en) * | 2009-01-23 | 2011-06-08 | 东南大学 | Intelligent control module for permanent magnet contactor |
| CN201478790U (en) * | 2009-08-03 | 2010-05-19 | 江苏国星电器有限公司 | Electromagnetic undervoltage release |
-
2009
- 2009-08-03 CN CN2009101838458A patent/CN101630831B/en active Active
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102543604A (en) * | 2012-02-16 | 2012-07-04 | 常州工学院 | Direct current shunt release applicable to operation in series connection with direct current relay |
| CN102568963A (en) * | 2012-02-16 | 2012-07-11 | 常州工学院 | Alternating current shunt tripper suitable for working with alternating current relay in series |
| CN102543604B (en) * | 2012-02-16 | 2014-04-09 | 常州工学院 | Direct current shunt release applicable to operation in series connection with direct current relay |
| CN102709874A (en) * | 2012-05-30 | 2012-10-03 | 江苏国星电器有限公司 | High-voltage under-voltage release |
| CN102709127A (en) * | 2012-05-30 | 2012-10-03 | 江苏国星电器有限公司 | Low-voltage alternating current/direct current general under-voltage tripper |
| CN102709127B (en) * | 2012-05-30 | 2014-09-17 | 江苏国星电器有限公司 | Low-voltage alternating current/direct current general under-voltage tripper |
| CN102709129B (en) * | 2012-06-26 | 2015-06-10 | 江苏国星电器有限公司 | Permanent magnet undervoltage tripping device |
| CN102709129A (en) * | 2012-06-26 | 2012-10-03 | 江苏国星电器有限公司 | Permanent magnet undervoltage tripping device |
| CN102768923B (en) * | 2012-07-02 | 2014-12-17 | 常州工学院 | Undervoltage tripper and working method thereof |
| CN102856131A (en) * | 2012-07-02 | 2013-01-02 | 常州工学院 | Undervoltage tripping device suitable for three-phase supply |
| CN102768924A (en) * | 2012-07-02 | 2012-11-07 | 常州工学院 | Undervoltage tripper with low power consumption and applicable to three-phase supply |
| CN104377644A (en) * | 2012-07-02 | 2015-02-25 | 常州工学院 | Undervoltage tripping device |
| CN104377645A (en) * | 2012-07-02 | 2015-02-25 | 常州工学院 | Low-power-consumption undervoltage tripper |
| CN104392869A (en) * | 2012-07-02 | 2015-03-04 | 常州工学院 | Undervoltage release |
| CN102768923A (en) * | 2012-07-02 | 2012-11-07 | 常州工学院 | Undervoltage tripper and working method thereof |
| CN102856131B (en) * | 2012-07-02 | 2015-11-18 | 常州工学院 | A kind of device for under-voltage releasing equipment being applicable to three phase mains |
| CN104377644B (en) * | 2012-07-02 | 2017-07-11 | 常州工学院 | A kind of device for under-voltage releasing equipment |
| CN104377645B (en) * | 2012-07-02 | 2018-08-24 | 常州工学院 | Low-power consumption device for under-voltage releasing equipment |
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| CN101630831B (en) | 2011-12-07 |
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