CN208753245U - Device for under-voltage releasing equipment - Google Patents
Device for under-voltage releasing equipment Download PDFInfo
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- CN208753245U CN208753245U CN201821535997.0U CN201821535997U CN208753245U CN 208753245 U CN208753245 U CN 208753245U CN 201821535997 U CN201821535997 U CN 201821535997U CN 208753245 U CN208753245 U CN 208753245U
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Abstract
The utility model provides a kind of device for under-voltage releasing equipment, it includes release bracket, electromagnetic release mechanism is arranged in one end of release bracket, transfer bar mechanism is arranged in the other end, it is equipped with lock between the two, the electromagnetic release mechanism includes coil block, iron core, and magnet steel is equipped between coil block upper end and release bracket, coil block is electrically connected with control circuit, and the control circuit includes voltage input circuit；Voltage inverter；Voltage comparator circuit, its size for being used to obtain network voltage and low-voltage value in real time, the input terminal of the voltage comparator circuit is connect with voltage input circuit, one output end can carry out on-off control to the positive power supply circuit between voltage input circuit and voltage inverter, another output is connect with voltage inverter, two output ends of voltage comparator circuit are connect with the both ends of the coil of coil block respectively, iron core is adsorbed under attracting state using magnet steel, then disconnect the power supply of coil, it overcomes because coil is electrified for a long time, the defect that heating burnout causes breaker to malfunction, energy consumption can also can be greatly reduced simultaneously.
Description
Technical field
The utility model is specifically related to a kind of device for under-voltage releasing equipment.
Background technique
As electromagnetism integral structure, device for under-voltage releasing equipment mainly consists of two parts, electromagnetic system and control circuit.Wherein
Electromagnetic system is made of magnet exciting coil, static iron core and dynamic iron core, magnetic yoke support plate and reaction force spring etc., device for under-voltage releasing equipment peace
In breaker, what is be connected with dynamic iron core connects pulling plate, then opposite with the draw bar of breaker, intermediate there are certain gap,
As tripping stroke.Control circuit mainly has power input, EMI filtering, full-wave rectification, voltage sample, processing and coil to drive
Move several parts.
According to national standard to the definition of device for under-voltage releasing equipment and the regulation of performance, under-voltage relay or buckle releaser and device for switching group
It is combined, when external voltage declines, or even is slowly drop down to the 70%-35% of voltage rating, combines with device for switching one
The under-voltage relay and buckle releaser risen should act, and disconnect circuit.When applied voltage is lower than under-voltage relay or the volume of buckle releaser
Constant voltage 35% when, under-voltage relay or buckle releaser should prevent electric appliance to be closed.When supply voltage is equal to or higher than its voltage rating
When 85%, under-voltage relay or buckle releaser should ensure that electric appliance can be closed.
Device for under-voltage releasing equipment presses requirement, can be divided into self-priming and Sucking-assisting type.Self-priming device for under-voltage releasing equipment, its main feature is that
When starting, the electric current of flowing through coil generates a certain number of magnetic fluxs in armature, iron core and air gap, generates under the action of magnetic flux
Armature is drawn to iron core by a certain size electromagnetic attraction, not against the support of external force, can be attracted in place and be kept.Self-priming
Formula device for under-voltage releasing equipment actuating mechanism is simple, and by electronic circuit control, high voltage starting, low-voltage are kept, and is not present and open circuit
Device poor fit and cause problems, operation more frequent occasion big especially suitable for cage electric current.
Sucking-assisting type device for under-voltage releasing equipment is supported without external force, is only unable to complete actuation task by electromagnetic attraction.Advantage is to hold
The resistance value of line circle is bigger, electronic circuit is simple, small in size, for the good environment of power grid quality, equally can reach under-voltage guarantor
The purpose of shield.The disadvantage is that: 1) mechanism itself complicated, the cooperation of under-voltage executing agency and breaker itself is required it is relatively high, such as
Fruit assembly it is inappropriate, may result in breaker cannot cooperate, slide fastener, influence overall performance；2) breaker of plastic casing is not working
Or it is under-voltage when being not powered on, device for under-voltage releasing equipment is in stress always, and the revolving meber of breaker of plastic casing coupling part is because long-term
Stress and tear, cause breaker of plastic casing that cannot work.
Utility model content
For the technical deficiency more than overcoming, the utility model provides a kind of device for under-voltage releasing equipment.
The utility model provides a kind of device for under-voltage releasing equipment comprising one end of release bracket, the release bracket is set
Electromagnetic release mechanism is set, transfer bar mechanism is arranged in the other end, is equipped with lock between the two, and the lock includes actuation part, articulated section
And locking part, the actuation part are located on the downside of the electromagnetic release mechanism, the locking part and the transfer bar mechanism are constituted and are limited
Position cooperation, the electromagnetic release mechanism includes coil block, the iron core that is threaded through in coil block, the coil block upper end with
Magnet steel is equipped between release bracket, the coil block is electrically connected with control circuit, and the control circuit includes:
Voltage input circuit, for obtaining input voltage；
The positive voltage of input can be converted to negative electricity with the two-way output connection of voltage input circuit by voltage inverter
Pressure；
Voltage comparator circuit, is used to obtain the size of network voltage and low-voltage value in real time, and the voltage is more electric
The input terminal on road is connect with voltage input circuit, one output end can between voltage input circuit and voltage inverter just
On-off control is carried out to power supply circuit, another output is connect with voltage inverter, two output ends of voltage comparator circuit
It is connect respectively with the both ends of the coil of coil block,
When network voltage is greater than low-voltage value, after plunger return, voltage comparator circuit off voltage input circuit
Positive power supply circuit between voltage inverter adsorbs iron core by magnet steel and maintains attracting state,
When network voltage is equal to or less than low-voltage value, voltage comparator circuit outputs control signals to voltage reversal
Device, and voltage inverter is made to export negative voltage, realize tripping.
The release bracket is equipped with mounting portion, and the coil block is placed on the upside of the mounting portion, and the iron core passes through
The circular hole of mounting portion is arranged.
The mandrel bottom is equipped with locating part, and elastic component is equipped between the locating part and mounting portion.
The transfer bar mechanism includes the fixation bracket that release bracket bottom is arranged in, constitutes to slide with release bracket and match
The push rod of conjunction, and the elastic component being arranged between fixed bracket and push rod.
The side of the push rod is equipped with boss, and constitutes limit cooperation with lock.
The voltage input circuit includes current rectifying and wave filtering circuit and the Switching Power Supply that connect with current rectifying and wave filtering circuit, described
Two output ends of Switching Power Supply are connect with voltage inverter.
The output end of the current rectifying and wave filtering circuit is connect with voltage comparator circuit.
Serial connection controllable silicon between the Switching Power Supply and the positive power supply circuit of voltage inverter, the silicon-controlled control
End is connect with the output end of voltage comparator circuit.
The utility model has the beneficial effects that adsorbing iron core under attracting state using magnet steel, the power supply of coil is then disconnected,
It overcomes because of the defect that coil is electrified for a long time, breaker malfunctions caused by heating burnout, while energy consumption can also can be greatly reduced.
Detailed description of the invention
Fig. 1 is the stereoscopic schematic diagram of the utility model.
Fig. 2 is the partial sectional view of the utility model.
Fig. 3 is the side view of the utility model.
Fig. 4 is the top view of the utility model.
Fig. 5 is the cross-sectional view at the cooperation of the lock and push rod of the utility model.
Fig. 6 is the structural schematic diagram of lock.
Fig. 7 is the schematic diagram of control circuit.
Specific embodiment
The utility model embodiment is described further with reference to the accompanying drawing:
As shown, the utility model provides a kind of device for under-voltage releasing equipment comprising release bracket 1, the buckle releaser branch
Frame 1 is u-shaped, and the side of release bracket 1 is used for Motionless electromagnetic tripping mechanism, and transfer bar mechanism is arranged in the other side, between the two
Equipped with lock, the i.e. side of Motionless electromagnetic tripping mechanism, release bracket is isolated by upper layer and lower layer by mounting portion, electromagnetism is de-
The coil block of buckle mechanism is arranged on upper layer, and magnet steel 4, magnet steel 4 are arranged between the upper end and release bracket of coil block
It is fixedly installed therebetween, and it is with certain magnetic force, and is provided with a circular hole on mounting portion, iron core passes through the circular hole and is placed in
7 center of coil block, and 3 bottom of iron core is equipped with locating part, and elastic component, the locating part are equipped between the locating part and mounting portion
9 are fixed on iron core by circlip 10, are arranged fan-shaped spring 8 outside iron core, the spring is between locating part and mounting portion, to iron
Core provides a downward power, and the transfer bar mechanism includes the fixation bracket and buckle releaser that release bracket bottom is arranged in
Bracket constitutes the push rod 2 of sliding cooperation, and the elastic component being arranged between fixed bracket and push rod 2, and the fixed fixation of bracket 6 is set
At the fluting for setting U-shaped release bracket, and push rod lower end forms slipping part, can slide between release bracket, and takes off
It detains and push rod spring 5 is set between the bottom of device and fixed bracket, for providing push rod 2 upward power.
The lock 12 includes actuation part 121, articulated section 122 and locking part 123, and the actuation part is located at the electromagnetism
On the downside of tripping mechanism, the locking part and the transfer bar mechanism constitute limit cooperation, and the articulated section is hingedly arranged by axis 13
It in the U surname opening of release bracket, while latching and being equipped with latch spring 10 between axis, improve lock trip speed, one
End is actuation part, is arranged in iron core lower end, can be touched to form lever by iron core 3, and the boss of locking part and push rod constitutes limit
Cooperation, and when actuation part is hit by iron core, the limit that can release locking part and push rod cooperates, to realize that tripping is dynamic
Make.
The coil block is electrically connected with control circuit, and the control circuit includes:
Voltage input circuit, for obtaining input voltage；The voltage input circuit include current rectifying and wave filtering circuit and with
The Switching Power Supply of current rectifying and wave filtering circuit connection, two output ends of the Switching Power Supply are connect with voltage inverter, the rectification
Filter circuit includes rectifier bridge DB1, and two input terminals of the rectifier bridge DB1 are connect with power grid, and between two input terminals
Varistor RV1 in parallel, the output end of rectifier bridge DB1 are then directly connect with Switching Power Supply, and electricity in parallel between two output ends
Capacitor C3 is solved, the effect of rectifying and wave-filtering is played.
The positive voltage of input can be converted to negative electricity with the two-way output connection of voltage input circuit by voltage inverter
Pressure, the voltage inverter are designed based on ICL7660 chip, are turned using the negative voltage that ICL7660 chip and peripheral circuit are constituted
Positive voltage can be converted to negative voltage by parallel operation, i.e., it can export positive voltage and export negative voltage, so as to realize
The variation of the magnetic direction of coil block；
Voltage comparator circuit, is used to obtain the size of network voltage and low-voltage value in real time, and the voltage is more electric
The input terminal on road is connect with voltage input circuit, one output end can between voltage input circuit and voltage inverter just
On-off control is carried out to power supply circuit, another output is connect with voltage inverter, two output ends of voltage comparator circuit
It is connect respectively with the both ends of the coil of coil block, wherein the serial connection controllable silicon on positive power supply circuit, the silicon-controlled control
End is connect with voltage comparator circuit, and in normal state, Switching Power Supply can be powered voltage comparator circuit, is determining to owe electricity
When pressure, silicon-controlled on-off can control, the working condition of Lai Shixian voltage inverter, while in order to ensure coil block is being inhaled
After conjunction, by the auxiliary contact of linkage configuration, coil block may be implemented after maintaining to be attracted, disconnect power supply.
When network voltage is greater than low-voltage value, i.e., when voltage is normal, voltage inverter gives coil positive voltage, so that iron
Core resets, the positive power supply after plunger return, between voltage comparator circuit off voltage input circuit and voltage inverter
Circuit adsorbs iron core by magnet steel and maintains attracting state, when can make in attracting state, is not powered on coil,
It can be reduced energy consumption, and the calorific value of coil can be reduced.
And when network voltage is equal to or less than low-voltage value, voltage comparator circuit outputs control signals to voltage reversal
Device, and voltage inverter is made to export negative voltage, so that coil block generates and the reversed magnetic field of magnet steel, utilize the magnetic of magnet steel
Field accelerates iron core to be detached from, to realize tripping.
When voltage is normal, control panel gives device for under-voltage releasing equipment coil normal power supply, and iron core is moved upwards, contacted with magnet steel, this
When lock reset, push rod enters locked die type again under product leverage, at this moment, disconnects the positive power supply of coil, product is detained again
Normally, when voltage reduces, and is equal to or less than product low-voltage value, control panel enters voltage reversal mould to tripping coil power supply
Formula, at this moment coil gives iron core one reaction repulsion, and iron core is opened with magnet steel reprimand, putter action, product tripping.
Embodiment is not construed as limitations of the present invention, any spiritual improvements introduced based on the utility model,
It should all be within the protection scope of the utility model.
Claims (8)
1. a kind of device for under-voltage releasing equipment comprising electromagnetic release mechanism is arranged in one end of release bracket, the release bracket, separately
Transfer bar mechanism is arranged in one end, is equipped with lock between the two, and the lock includes actuation part, articulated section and locking part, the cause
Dynamic portion is located on the downside of the electromagnetic release mechanism, and the locking part and the transfer bar mechanism constitute limit cooperation, it is characterised in that:
The iron core that the electromagnetic release mechanism includes coil block, is threaded through in coil block, the coil block upper end and buckle releaser
Magnet steel is equipped between bracket, the coil block is electrically connected with control circuit, and the control circuit includes:
Voltage input circuit, for obtaining input voltage；
The positive voltage of input can be converted to negative voltage with the two-way output connection of voltage input circuit by voltage inverter；
Voltage comparator circuit is used to obtain the size of network voltage and low-voltage value in real time, the voltage comparator circuit
Input terminal is connect with voltage input circuit, one output end can supply the forward direction between voltage input circuit and voltage inverter
Circuit carries out on-off control, and another output is connect with voltage inverter, two output ends difference of voltage comparator circuit
It is connect with the both ends of the coil of coil block,
When network voltage is greater than low-voltage value, after plunger return, voltage comparator circuit off voltage input circuit and electricity
The positive power supply circuit between inversion device is pressed, iron core is adsorbed by magnet steel and maintains attracting state,
When network voltage is equal to or less than low-voltage value, voltage comparator circuit outputs control signals to voltage inverter, and
So that voltage inverter is exported negative voltage, realizes tripping.
2. device for under-voltage releasing equipment according to claim 1, which is characterized in that the release bracket is equipped with mounting portion, institute
It states coil block to be placed on the upside of the mounting portion, the circular hole that the iron core passes through mounting portion is arranged.
3. device for under-voltage releasing equipment according to claim 2, which is characterized in that the mandrel bottom is equipped with locating part, the limit
Elastic component is equipped between position part and mounting portion.
4. device for under-voltage releasing equipment according to claim 1, which is characterized in that the transfer bar mechanism includes being arranged in buckle releaser branch
The fixation bracket of frame bottom, the push rod that sliding cooperation is constituted with release bracket, and setting is between fixed bracket and push rod
Elastic component.
5. device for under-voltage releasing equipment according to claim 4, which is characterized in that the side of the push rod be equipped with boss, and with lock
Button constitutes limit cooperation.
6. device for under-voltage releasing equipment according to claim 1, which is characterized in that the voltage input circuit includes rectifying and wave-filtering electricity
Two output ends of road and the Switching Power Supply connecting with current rectifying and wave filtering circuit, the Switching Power Supply are connect with voltage inverter.
7. device for under-voltage releasing equipment according to claim 6, which is characterized in that the output end and voltage of the current rectifying and wave filtering circuit
Comparison circuit connection.
8. device for under-voltage releasing equipment according to claim 6, which is characterized in that the forward direction of the Switching Power Supply and voltage inverter
Serial connection controllable silicon between power supply circuit, the output end connection of the silicon-controlled control terminal and voltage comparator circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821535997.0U CN208753245U (en) | 2018-09-20 | 2018-09-20 | Device for under-voltage releasing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821535997.0U CN208753245U (en) | 2018-09-20 | 2018-09-20 | Device for under-voltage releasing equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208753245U true CN208753245U (en) | 2019-04-16 |
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ID=66083624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821535997.0U Active CN208753245U (en) | 2018-09-20 | 2018-09-20 | Device for under-voltage releasing equipment |
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| CN (1) | CN208753245U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109119303A (en) * | 2018-09-20 | 2019-01-01 | 南电电气有限公司 | Device for under-voltage releasing equipment |
| CN110970866A (en) * | 2019-11-14 | 2020-04-07 | 华为技术有限公司 | Contactor control device and power supply system |
-
2018
- 2018-09-20 CN CN201821535997.0U patent/CN208753245U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109119303A (en) * | 2018-09-20 | 2019-01-01 | 南电电气有限公司 | Device for under-voltage releasing equipment |
| CN110970866A (en) * | 2019-11-14 | 2020-04-07 | 华为技术有限公司 | Contactor control device and power supply system |
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