CN205029320U - Circuit of moulded case circuit breaker prepayment module - Google Patents
Circuit of moulded case circuit breaker prepayment module Download PDFInfo
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- CN205029320U CN205029320U CN201520847933.4U CN201520847933U CN205029320U CN 205029320 U CN205029320 U CN 205029320U CN 201520847933 U CN201520847933 U CN 201520847933U CN 205029320 U CN205029320 U CN 205029320U
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Abstract
The utility model provides a circuit of moulded case circuit breaker prepayment module, include: exchange shunt release, the first phase line of power supply line is connected to its first end, and the second phase line of power supply line is connected to the second end, the surge absorption unit, its first end and phase 1 enzyme line connection, second end and phase 2 enzyme line connection, and surge absorption unit connection in the front end that exchanges shunt release, rectifier unit, its input is connected with the first end that exchanges shunt release, and connects in the rear end that exchanges shunt release the output direct current, step -down steady voltage unit, input and rectifier unit's output is connected, the direct current of output after the step -down steady voltage, signal detecting element, input receive the silicon controlled rectifier drive signal that the ammeter signal was exported and was corresponded, silicon controlled rectifier delay - driven unit and exchanges the shunt release series connection, receives silicon controlled rectifier drive signal and predetermines switching on or turn -offing of time control silicon controlled rectifier according to this signal lag.
Description
Technical field
The utility model relates to breaker technical field, is specifically related to a kind of circuit of breaker of plastic casing pre-payment module.
Background technology
Along with deepening constantly of national grid transformation, the mode that the charge method of electric company is just being paid after traditional first electricity consumption, changes the mode of electricity consumption after first power purchase into.After first power purchase, the mode of electricity consumption needs special electric power meter to support, as: pre-paying kilowatt-hour meter.The nucleus module of pre-paying kilowatt-hour meter is pre-payment module, when this module needs realize reliably the abnormal conditions such as arrearage occur as user, controls release disjunction wherein, to cut off the power supply to this user.
Adopt more pre-paying kilowatt-hour meter for moulding shell pre-paying kilowatt-hour meter in current domestic low voltage electrical apparatus industry, wherein, the control of release is realized mainly through relay, because relay belongs to mechanical switch, there is mechanical wear, anti-vibration resistance is poor and contact and disconnection have noise, easily disturb the normal work of other modules in ammeter; Meanwhile, the power consumption of relay is comparatively large, is unfavorable for energy-conservation.Meanwhile, the release moulded in prior art in shell pre-paying kilowatt-hour meter is generally direct current release, and the components and parts needed for this kind of mode are more, is unfavorable for cost-saving and higher to the requirement of bulk.
Utility model content
Therefore, the utility model proposes a kind of circuit of breaker of plastic casing pre-payment module, its at least all or part of upper solution or alleviation the above-mentioned problems in the prior art.
For this reason, the technical solution of the utility model is as follows:
A circuit for breaker of plastic casing pre-payment module, comprising:
Exchange shunt release, its first end connects the first phase line of supply line, and the second end connects the second phase line of described supply line; Described first phase line and described second phase line are any two in described supply line three phase lines;
Surge absoption unit, its first end is connected with described first phase line, and the second end is connected with described second phase line, and described surge absoption unit is connected to the front end of described interchange shunt release;
Rectification unit, its input is connected with the first end of described interchange shunt release, and is connected to the rear end of described interchange shunt release, and its output exports direct current;
Lowering and stabilizing blood pressure unit, its input is connected with the output of described rectification unit, and its output exports the direct current after lowering and stabilizing blood pressure;
Detecting signal unit, its input receives ammeter signal, and exports the controllable silicon drive singal corresponding with described ammeter signal;
Controllable silicon delay and running unit, it is connected in series with the described shunt release that exchanges, its controlled end is connected with the output of described detecting signal unit, for receiving described controllable silicon drive singal and controlling silicon controlled conducting or shutoff according to this signal lag Preset Time; Wherein,
Described controllable silicon driver element comprises: controllable silicon, the first diode, the first filter capacitor, the first current-limiting resistance and delay capacitor, wherein,
The anode of described first diode is connected with the output of described lowering and stabilizing blood pressure unit, and the negative electrode of described first diode, one end of described first filter capacitor are connected with one end of described first current-limiting resistance; The other end of described first current-limiting resistance, one end of described delay capacitor are connected with described silicon controlled gate pole; Described silicon controlled anode is connected with the second end of described interchange shunt release; Described silicon controlled negative electrode, the other end of described first filter capacitor, the other end of described delay capacitor are connected with described second phase line.
Preferably, described controllable silicon delay and running unit also comprises: pull down resistor and the first electric capacity, and wherein, one end of described pull down resistor, one end of described first electric capacity are connected with described silicon controlled gate pole; The other end of described pull down resistor, the other end of described first electric capacity are connected with described second phase line.
Preferably, described circuit also comprises: resistance-capacitance absorption unit, it comprises the first resistance and the second electric capacity, one end of wherein said first resistance is connected with described silicon controlled anode, the other end of described first resistance is connected with one end of described second electric capacity, and the other end of described second electric capacity is connected with described silicon controlled negative electrode.
Preferably described circuit, also comprise the second diode, its negative electrode is connected with the first end of described interchange shunt release, and anode is connected with the second end of described interchange shunt release.
Preferably, described surge absoption unit comprises piezo-resistance, and its one end is as the first end of described surge absoption unit, and the other end is then as the second end of described surge absoption unit.
Preferably, described rectification unit adopts half-wave rectifying circuit.
Preferably, described detecting signal unit comprises: the 3rd diode, the second resistance, the 3rd electric capacity and triode, and wherein, the anode of described 3rd diode is as the input of described detecting signal unit; The negative electrode of described 3rd diode is connected with one end of described second resistance; The other end of described second resistance, one end of described 3rd electric capacity are connected with the base stage of described triode; As the output of described detecting signal unit after the collector electrode of described triode is connected with the output of described lowering and stabilizing blood pressure unit; The emitter of described triode, the other end of described 3rd electric capacity are connected with described second phase line.
Technical solutions of the utility model, tool has the following advantages:
1. the circuit of breaker of plastic casing pre-payment module that provides of the utility model, shunt release and controllable silicon delay and running units in series will be exchanged, series arm is connected between any two in three phase lines of supply line, simultaneously, the controllable silicon drive singal that controllable silicon delay and running unit Received signal strength detecting unit exports controls silicon controlled conducting or shutoff, achieves effectively to drive to exchange shunt release.Any two that exchange in three phase lines in two ends and supply line of shunt release are connected by this circuit, the circuit that the utility model is provided is more applicable for three-phase alternating current system, and adopt interchange shunt release then can be directly inserted in the predeterminated position moulding shell pre-paying kilowatt-hour meter, reduce the requirement of bulk while cost-saving; Surge absoption unit is set in the front end exchanging shunt release, effectively protects interchange shunt release; Carry out the direct current after over commutation as power supply after lowering and stabilizing blood pressure, reliability is higher; Time delay Preset Time control silicon controlled turn-on and turn-off cost is realized by delay capacitor lower and reliable in controllable silicon driver element; and effectively protect controllable silicon and be not damaged be provided with the interference of the first diode, the first filter capacitor and the first current-limiting resistance erasure signal in controllable silicon driver element while, its circuit is simple, good stability.
2. the circuit of breaker of plastic casing pre-payment module that provides of the utility model, also comprises pull down resistor and the first electric capacity, avoids controllable silicon and be interfered signal by false triggering, improve the reliability of circuit in controllable silicon delay and running unit.
3. the circuit of breaker of plastic casing pre-payment module that provides of the utility model, also comprise the resistance-capacitance absorption unit be made up of the first resistance and the second electric capacity, due in perceptual loop, the moment that controllable silicon is opened or turned off, inductance easily produces back-emf, resistance-capacitance absorption unit provides continuous current circuit, plays the effect of protection silicon controlled; Reduce the probability that controllable silicon misleads simultaneously, improve the reliability of circuit.
4. the circuit of breaker of plastic casing pre-payment module that provides of the utility model, rectification unit adopts half-wave rectifying circuit, on the basis ensureing circuit reliability and stability, have employed the function that less components and parts achieve rectification, and cost is lower and be easy to safeguard.
5. the circuit of breaker of plastic casing pre-payment module that provides of the utility model, detecting signal unit receives ammeter signal, and according to the conducting of ammeter signal controlling triode or shutoff, be specially: when ammeter signal is normal, triode ON, controllable silicon with exchange shunt release cut-off, ammeter normally works, load end normal power-up; During ammeter abnormal signal, triode end, controllable silicon with exchange the conducting of shunt release time delay Preset Time, load end no power.Detecting signal unit adopts transistor switching circuit, it does not re-use mechanical relay, and the circuit mechanical wearing and tearing that the utility model is provided, vibration resistance, mechanical contact and abnormal sound when disconnecting, strong interference immunity, power consumption are little, accuracy of judgement and rapidly.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is execution modes more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the circuit theory diagrams of a concrete example of the circuit of breaker of plastic casing pre-payment module in the utility model embodiment 1;
Reference numeral: 1-surge absoption unit, 2-rectification unit, 3-lowering and stabilizing blood pressure unit, 4-detecting signal unit, 5-controllable silicon delay and running unit, 6-resistance-capacitance absorption unit.
Embodiment
Be clearly and completely described the technical solution of the utility model below in conjunction with accompanying drawing, obviously, described embodiment is the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
In description of the present utility model, it should be noted that, orientation or the position relationship of the instruction such as term " " center ", " on ", D score, "left", "right", " vertically ", " level ", " interior ", " outward " they be based on orientation shown in the drawings or position relationship; be only the utility model and simplified characterization for convenience of description; instead of instruction or imply the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.In addition, term " first ", " second ", " the 3rd " only for describing object, and can not be interpreted as instruction or hint relative importance.
In description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can also be the connection of two element internals, can be wireless connections, also can be wired connection.For the ordinary skill in the art, concrete condition the concrete meaning of above-mentioned term in the utility model can be understood.
In addition, if below in the described different execution mode of the utility model involved technical characteristic do not form conflict each other and just can be combined with each other.
Embodiment 1
As shown in Figure 1, the present embodiment provides a kind of circuit of breaker of plastic casing pre-payment module, comprising:
Exchange shunt release COIL, its first end connects the first phase line of supply line, and the second end connects the second phase line of supply line; First phase line and the second phase line are any two in supply line's three phase lines.As A phase and the B phase that can select supply line, or B phase and C phase, or A phase and C phase, specifically carry out selecting with the situation at scene as required.Illustrated in Fig. 1 that the first end exchanging shunt release COIL connects the A phase of supply line, the second end exchanging shunt release COIL connects the situation of the B phase of supply line.
Surge absoption unit 1, its first end is connected with the first phase line (the A phase of supply line), and the second end is connected with the second phase line (the B phase of supply line), and surge absoption unit 1 is connected to the front end exchanging shunt release COIL.As a kind of specific implementation, this surge absoption unit 1 can utilize piezo-resistance RV1 to realize, then piezo-resistance RV1 one end is as the first end of surge absoption unit 1, and the other end is as the second end of surge absoption unit 1.
Rectification unit 2, its input is connected with the first end (namely and the A phase of supply line) exchanging shunt release COIL, and is connected to the rear end of interchange shunt release COIL, its output output direct current.As a kind of specific implementation, as shown in Figure 1, the half-wave rectifying circuit that rectification unit 2 can adopt diode D4 to form realizes, on the basis ensureing circuit reliability and stability, have employed the function that less components and parts achieve rectification, cost lower and be easy to safeguard.
Lowering and stabilizing blood pressure unit 3, its input is connected with the output of rectification unit 2, and its output exports the direct current after lowering and stabilizing blood pressure.As a kind of specific implementation; as shown in Figure 1; this lowering and stabilizing blood pressure unit 3 can adopt resistance R5, resistance R6, resistance R7 and voltage stabilizing didoe Z1 to realize; cost is lower, simple and practical and effective; three resistance are set simultaneously and reduce power consumption; avoid resistance excessive heating, protective circuit.
Detecting signal unit 4, its input receives ammeter signal, and exports the controllable silicon drive singal corresponding with ammeter signal.
As a kind of specific implementation, this detecting signal unit 4 can comprise: the 3rd diode D3, the second resistance R4, the 3rd electric capacity C5 and triode Q2, and wherein, the anode of the 3rd diode D3 is as the input of detecting signal unit 4; The negative electrode of the 3rd diode D3 is connected with one end of the second resistance R4; The other end of the second resistance R4, one end of the 3rd electric capacity C5 are connected with the base stage of triode Q2; As the output of detecting signal unit 4 after the collector electrode of triode Q2 is connected with the output of lowering and stabilizing blood pressure unit 3; The emitter of triode Q2, the other end of the 3rd electric capacity C5 are connected with the second phase line.In this kind of implementation, detecting signal unit 4 receives ammeter signal, and according to the conducting of ammeter signal controlling triode or shutoff, be specially: when ammeter signal normal (electricity charge are sufficient), triode Q2 conducting, controllable silicon Q1 with exchange shunt release COIL and end, ammeter normally works, load end normal power-up; Time ammeter abnormal signal (electricity charge are had a deficit), triode Q2 ends, controllable silicon Q1 with exchange shunt release COIL time delay Preset Time (carrying out time delay by delay capacitor C2) conducting, load end no power.Adopt transistor switching circuit, it does not re-use mechanical relay, and the circuit mechanical wearing and tearing that the present embodiment is provided, vibration resistance, mechanical contact and abnormal sound when disconnecting, strong interference immunity, power consumption are little, accuracy of judgement and rapid.
Controllable silicon delay and running unit 5, its with exchange shunt release COIL and be connected in series, its controlled end is connected with the output of detecting signal unit 4, for receiving controllable silicon drive singal and controlling silicon controlled conducting or shutoff according to this signal lag Preset Time (as 1.4S); Wherein,
Controllable silicon driver element can comprise: controllable silicon Q1, the first diode D1, the first filter capacitor C1, the first current-limiting resistance R1 and delay capacitor C2, wherein, the anode of the first diode D1 is connected with the output (being the negative electrode of voltage stabilizing didoe Z1 in Fig. 1) of lowering and stabilizing blood pressure unit 3, and the negative electrode of the first diode D1, one end of the first filter capacitor C1 are connected with one end of the first current-limiting resistance R1; The other end of the first current-limiting resistance R1, one end of delay capacitor C2 are connected with the gate pole of controllable silicon Q1; The anode of controllable silicon Q1 is connected with the second end exchanging shunt release COIL; The negative electrode of controllable silicon Q1, the other end of the first filter capacitor C1, the other end of delay capacitor C2 are connected with described second phase line.
Preferably, controllable silicon delay and running unit 5 also comprises: pull down resistor R2 and the first electric capacity C3, and wherein, one end of pull down resistor R2, one end of the first electric capacity C3 are connected with the gate pole of controllable silicon Q1; The other end of pull down resistor R2, the other end of the first electric capacity C3 are connected with the second phase line.Setting like this, avoids controllable silicon and is interfered signal by false triggering, improve the reliability of circuit.
The circuit of the breaker of plastic casing pre-payment module that the present embodiment provides, interchange shunt release is connected with controllable silicon delay and running unit 5, series arm is connected between any two in three phase lines of supply line, simultaneously, the controllable silicon drive singal that controllable silicon delay and running unit 5 Received signal strength detecting unit 4 exports controls silicon controlled conducting or shutoff, achieves effectively to drive to exchange shunt release.Any two that exchange in three phase lines in two ends and supply line of shunt release are connected by this circuit, the circuit that the present embodiment is provided is more applicable for three-phase alternating current system, and adopt interchange shunt release then can be directly inserted in the predeterminated position moulding shell pre-paying kilowatt-hour meter, reduce the requirement of bulk while cost-saving; Surge absoption unit 1 is set in the front end exchanging shunt release, effectively protects interchange shunt release; Carry out the direct current after over commutation as power supply after lowering and stabilizing blood pressure, reliability is higher; Time delay Preset Time control silicon controlled turn-on and turn-off cost is realized by delay capacitor lower and reliable in controllable silicon driver element; and effectively protect controllable silicon and be not damaged be provided with the interference of the first diode, the first filter capacitor and the first current-limiting resistance erasure signal in controllable silicon driver element while, its circuit is simple, good stability.
On the basis of such scheme, the circuit of the breaker of plastic casing pre-payment module that the present embodiment provides can also comprise resistance-capacitance absorption unit 6, it comprises the first resistance R3 and the second electric capacity C4, wherein one end of the first resistance R3 is connected with the anode of controllable silicon Q1, the other end of the first resistance R3 is connected with one end of the second electric capacity C4, and the other end of the second electric capacity C4 is connected with controllable silicon Q1 negative electrode.Due in perceptual loop, the moment that controllable silicon is opened or turned off, inductance easily produces back-emf, and resistance-capacitance absorption unit provides continuous current circuit, plays the effect of protection silicon controlled; Reduce the probability that controllable silicon misleads simultaneously, improve the reliability of circuit.
On the basis of such scheme, the circuit of the breaker of plastic casing pre-payment module that the present embodiment provides can also comprise the second diode D2, and its negative electrode is connected with interchange shunt release COIL first end, and anode is connected with the second end exchanging shunt release COIL.When the coil of shunt release COIL produces inverse electromotive force, the second diode D2 provides continuous current circuit.
The circuit of the breaker of plastic casing pre-payment module that the present embodiment provides, anti-lightning surge capability is good, can reach differential mode 4KV, common mode 5KV, substantially increases reliability and the fail safe of circuit.
Obviously, above-described embodiment is only for clearly example being described, and the restriction not to execution mode.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all execution modes.And thus the apparent change of extending out or variation be still among the protection range that the utility model creates.
Claims (7)
1. a circuit for breaker of plastic casing pre-payment module, is characterized in that, comprising:
Exchange shunt release (COIL), its first end connects the first phase line of supply line, and the second end connects the second phase line of described supply line; Described first phase line and described second phase line are any two in described supply line three phase lines;
Surge absoption unit, its first end is connected with described first phase line, and the second end is connected with described second phase line, and described surge absoption unit is connected to the front end of described interchange shunt release (COIL);
Rectification unit, its input is connected with the first end of described interchange shunt release (COIL), and is connected to the rear end of described interchange shunt release (COIL), and its output exports direct current;
Lowering and stabilizing blood pressure unit, its input is connected with the output of described rectification unit, and its output exports the direct current after lowering and stabilizing blood pressure;
Detecting signal unit, its input receives ammeter signal, and exports the controllable silicon drive singal corresponding with described ammeter signal;
Controllable silicon delay and running unit, it is connected in series with the described shunt release (COIL) that exchanges, its controlled end is connected with the output of described detecting signal unit, for receiving described controllable silicon drive singal and controlling silicon controlled conducting or shutoff according to this signal lag Preset Time; Wherein,
Described controllable silicon driver element comprises: controllable silicon (Q1), the first diode (D1), the first filter capacitor (C1), the first current-limiting resistance (R1) and delay capacitor (C2), wherein,
The anode of described first diode (D1) is connected with the output of described lowering and stabilizing blood pressure unit, and the negative electrode of described first diode (D1), one end of described first filter capacitor (C1) are connected with one end of described first current-limiting resistance (R1); The other end of described first current-limiting resistance (R1), one end of described delay capacitor (C2) are connected with the gate pole of described controllable silicon (Q1); The anode of described controllable silicon (Q1) is connected with the second end of described interchange shunt release (COIL); The other end of the negative electrode of described controllable silicon (Q1), the other end of described first filter capacitor (C1), described delay capacitor (C2) is connected with described second phase line.
2. circuit according to claim 1, it is characterized in that, described controllable silicon delay and running unit also comprises: pull down resistor (R2) and the first electric capacity (C3), wherein, one end of described pull down resistor (R2), one end of described first electric capacity (C3) are connected with the gate pole of described controllable silicon (Q1); The other end of described pull down resistor (R2), the other end of described first electric capacity (C3) are connected with described second phase line.
3. circuit according to claim 1 and 2, it is characterized in that, also comprise: also comprise resistance-capacitance absorption unit, it comprises the first resistance (R3) and the second electric capacity (C4), one end of wherein said first resistance (R3) is connected with the anode of described controllable silicon (Q1), the other end of described first resistance (R3) is connected with one end of described second electric capacity (C4), and the other end of described second electric capacity (C4) is connected with the negative electrode of described controllable silicon (Q1).
4. circuit according to claim 1, it is characterized in that, also comprise the second diode (D2), its negative electrode is connected with the first end of described interchange shunt release (COIL), and anode is connected with the second end of described interchange shunt release (COIL).
5. the circuit according to claim 1 or 4, is characterized in that, described surge absoption unit comprises piezo-resistance (RV1), and its one end is as the first end of described surge absoption unit, and the other end is then as the second end of described surge absoption unit.
6. circuit according to claim 1, is characterized in that, described rectification unit adopts half-wave rectifying circuit.
7. the circuit according to claim 1 or 6, it is characterized in that, described detecting signal unit comprises: the 3rd diode (D3), the second resistance (R4), the 3rd electric capacity (C5) and triode (Q2), wherein, the anode of described 3rd diode (D3) is as the input of described detecting signal unit; The negative electrode of described 3rd diode (D3) is connected with one end of described second resistance (R4); The other end of described second resistance (R4), one end of described 3rd electric capacity (C5) are connected with the base stage of described triode (Q2); As the output of described detecting signal unit after the collector electrode of described triode (Q2) is connected with the output of described lowering and stabilizing blood pressure unit; The emitter of described triode (Q2), the other end of described 3rd electric capacity (C5) are connected with described second phase line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201520847933.4U CN205029320U (en) | 2015-10-29 | 2015-10-29 | Circuit of moulded case circuit breaker prepayment module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520847933.4U CN205029320U (en) | 2015-10-29 | 2015-10-29 | Circuit of moulded case circuit breaker prepayment module |
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| CN205029320U true CN205029320U (en) | 2016-02-10 |
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