CN202333734U - Intelligent protector of safety source - Google Patents
Intelligent protector of safety source Download PDFInfo
- Publication number
- CN202333734U CN202333734U CN201120427526XU CN201120427526U CN202333734U CN 202333734 U CN202333734 U CN 202333734U CN 201120427526X U CN201120427526X U CN 201120427526XU CN 201120427526 U CN201120427526 U CN 201120427526U CN 202333734 U CN202333734 U CN 202333734U
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- resistance
- overcurrent
- bleeder circuit
- electric bridge
- silicon
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Abstract
The utility model discloses an intelligent protector of a safety source, which comprises a current foldback circuit composed of a trip (1), an overcurrent protector (2), a bridge (3) and an overcurrent silicon-controlled rectifier (BT1). The positive electrode of the overcurrent silicon-controlled rectifier (BT1) is connected with the positive output end of the bridge (3), the negative electrode of the overcurrent silicon-controlled rectifier (BT1) and the negative output end of the bridge (3) are connected with the ground, and the controlling end of the overcurrent silicon-controlled rectifier (BT1) is in tandem connection with an overcurrent inductance coil of the overcurrent protector (2) and then connected with the ground. The intelligent protector is characterized in that two ends of the overcurrent silicon-controlled rectifier (BT1) are connected with a voltage silicon-controlled rectifier (BT2) in parrellel, and the controlling end of the voltage silicon-controlled rectifier (BT2) is connected with an overvoltage protection circuit and an undervoltage protection circuit. The intelligent protector is simple in structure and low in cost, has functions of over-current protection, overvoltage protection and undervoltage protection, and guarantees safety use of civil electrical equipment.
Description
Technical field
The utility model belongs to the safety utilization of electric power technical field, particularly a kind of safety power supply intellective protector.
Background technology
Along with the fast development of modern electric electrical network is popularized, no matter people are activity in production or life staying idle at home, and the electric apparatus product of use is being on the increase, and power is also in continuous increase, also increase the weight of to the load that makes power circuit and power transformer thereupon.Safety utilization of electric power is for civilian all extremely important with commercial power; When unusual condition appears in electrical network; The power supply that gets into electric equipment is easy to occur overcurrent, overvoltage or under voltage phenomenon; Cross electricity, overvoltage is easy to burn out power consumption equipment in moment, under-voltagely also can influence power utilization environment, reduces service life of equipment.
When reasons such as running into excess load or thunder and lightning causes power supply zero line break or power transformer to damage suddenly, the anomaly that line voltage also occurs rising suddenly thereupon or reduces suddenly.The accidents such as short circuit in the electric power network circuit, electric leakage, human electric shock of adding also take place often; If or else take effective safeguard measure, will inevitably often cause the large-area electrical equipment that burns, the loss property; Casualty causes great economic loss for country, collective or individual for this reason.
The shortcoming of prior art: existing circuit breaker product on the market, function singleness does not reach the purpose of safety utilization of electric power at all mostly.Because cost is too high, has only the power end of industrial electricity apparatus just to assemble special overvoltage protection, basic overvoltage protection and the less voltage protector just do not installed of civilian electricity.
The utility model content
The purpose of the utility model is to propose a kind of simple in structure, safety power supply intellective protector that cost is low, possesses overcurrent protection, overvoltage protection and under voltage protection function simultaneously, has guaranteed the safe handling of civil electric appliance equipment.
The technical scheme of the utility model is following: a kind of safety power supply intellective protector; Comprise the current foldback circuit of forming by release, overcurrent protector, electric bridge and overcurrent controllable silicon; Wherein overcurrent silicon controlled anode connects the negative sense output head grounding of forward output, overcurrent silicon controlled negative electrode and the electric bridge of said electric bridge; Overcurrent silicon controlled control end is connected in series ground connection behind the overcurrent induction coil of said overcurrent protector; Its key is: said overcurrent silicon controlled two ends also and be connected to voltage controlled silicon, the control end of said voltage controlled silicon is connected with overvoltage crowbar and under-voltage protecting circuit;
Said overvoltage crowbar comprises piezo-resistance; The control end of the said voltage controlled silicon of this piezo-resistance one termination; The other end is connected the sampling end at first bleeder circuit middle part; The head end of this first bleeder circuit connects the forward output of said electric bridge, and the end of this first bleeder circuit connects the negative sense output of said electric bridge;
Too high when supply voltage, it is too high that electric bridge flows to the dividing potential drop of first bleeder circuit, the overtension that piezo-resistance is gathered from the first bleeder circuit sampling end, and the control end of voltage controlled silicon triggers, the conducting of voltage controlled silicon.
Said under-voltage protecting circuit comprises second bleeder circuit; The head end of this second bleeder circuit connects the forward output of said electric bridge; The end of this second bleeder circuit connects the negative sense output of said electric bridge, is positioned at the base stage that connects triode behind sampling end string the 5th resistance at this second bleeder circuit middle part, connects the forward output of said electric bridge behind emitter string second resistance of this triode; The emitter of this triode also connects the negative terminal of electric capacity of voltage regulation; The base stage of the said triode of positive termination of this electric capacity of voltage regulation, the collector electrode of said triode connects the anode of the 6th diode, and the negative electrode of the 6th diode connects the control end of said voltage controlled silicon.
When supply voltage is low excessively, the dividing potential drop that electric bridge flows to second bleeder circuit is low excessively, and the base voltage of triode is dragged down by the second bleeder circuit sampling end, the triode conducting, and the 6th diode current flow, the control end of voltage controlled silicon triggers, the conducting of voltage controlled silicon.
The anode of said the 6th diode is connected with ground through electrochemical capacitor, and the negative electrode of the 6th diode is connected with through filter capacitor.
The emitter of said triode is connected with ground through voltage stabilizing didoe.
Be connected with the 3rd electric capacity between the sampling end of said first bleeder circuit and the ground.
Said first bleeder circuit is made up of the 4th resistance, the 9th resistance, the tenth resistance; The forward output of the said electric bridge of the 4th resistance one termination wherein; Other end string the 9th resistance is after the tenth grounding through resistance, and the common port of said the 4th resistance and the 9th resistance is the sampling end of said first bleeder circuit.
Said second bleeder circuit is made up of the 3rd resistance, the 7th resistance, the 8th resistance; The forward output of the said electric bridge of the 3rd resistance one termination wherein; Other end string the 7th resistance is after the 8th grounding through resistance, and the common port of said the 3rd resistance and the 7th resistance is the sampling end of said second bleeder circuit.
Be serially connected with 11 resistance between said overcurrent silicon controlled control end and the ground, also be serially connected with first electric capacity between overcurrent silicon controlled control end and the ground, overcurrent silicon controlled control end also is connected with the negative terminal of the 5th diode, the positive ending grounding of the 5th diode.
The first input end of said electric bridge is gone here and there successively and is connect power firestreak behind the live wire switch of the live wire induction coil of said overcurrent protector, said release;
Second input of said electric bridge is gone here and there successively and is connect zero-power line behind the zero line switch of zero line induction coil, release of induction coil, overcurrent protector of said release.
Beneficial effect: the utility model provides a kind of safety power supply intellective protector, possesses overcurrent protection, overvoltage protection and under voltage protection function simultaneously, has guaranteed the safe handling of civil electric appliance equipment.When running into situation such as thunder and lightning, mains supply over-voltage, under-voltage, load electric leakage, short circuit, overcurrent take place, the utility model can cut off mains supply automatically in 0.1 second, thereby protected load automatically.Have simple in structure, advantages such as cost is low, dependable performance, breaking capacity is high, external form is small and exquisite, cheap, easy for installation, popularize easily.
Description of drawings
Fig. 1 is the circuit diagram of the utility model.
Embodiment:
Below in conjunction with accompanying drawing the utility model is further described.
See also Fig. 1: a kind of safety power supply intellective protector; Comprise the current foldback circuit of forming by release 1, overcurrent protector 2, electric bridge 3 and overcurrent controllable silicon BT1; Wherein the anode of overcurrent controllable silicon BT1 connects the forward output of said electric bridge 3, the negative electrode of overcurrent controllable silicon BT1 and the negative sense output head grounding of electric bridge 3, and the control end of overcurrent controllable silicon BT1 is connected in series ground connection behind the overcurrent induction coil of said overcurrent protector 2.
The two ends of said overcurrent controllable silicon BT1 also and be connected to voltage controlled silicon BT2, the control end of said voltage controlled silicon BT2 is connected with overvoltage crowbar and under-voltage protecting circuit;
Said overvoltage crowbar comprises piezo-resistance DB; The control end of the said voltage controlled silicon of this piezo-resistance DB one termination BT2; The other end is connected the sampling end at first bleeder circuit middle part; The head end of this first bleeder circuit connects the forward output of said electric bridge 3, and the end of this first bleeder circuit connects the negative sense output of said electric bridge 3;
Said under-voltage protecting circuit comprises second bleeder circuit; The head end of this second bleeder circuit connects the forward output of said electric bridge 3; The end of this second bleeder circuit connects the negative sense output of said electric bridge 3; Be positioned at the base stage that meets triode BT3 after sampling end string the 5th resistance R 5 at this second bleeder circuit middle part, the model of triode BT3 is 9015, connects the forward output of said electric bridge 3 after emitter string second resistance R 2 of this triode BT3; The emitter of this triode BT3 also connects the negative terminal of electric capacity of voltage regulation C5; The base stage of the said triode BT3 of positive termination of this electric capacity of voltage regulation C5, the collector electrode of said triode BT3 connects the anode of the 6th diode D6, and the negative electrode of the 6th diode D6 connects the control end of said voltage controlled silicon BT2.
The anode of said the 6th diode D6 is connected with ground through electrochemical capacitor C4, and the negative electrode of the 6th diode D6 is connected with through filter capacitor C2.
The emitter of said triode BT3 is connected with ground through voltage stabilizing didoe D7.
Be connected with the 3rd capacitor C 3 between the sampling end of said first bleeder circuit and the ground.
Said first bleeder circuit is made up of the 4th resistance R 4, the 9th resistance R 9, the tenth resistance R 10; The forward output of the said electric bridge 3 of the 4th resistance R 4 one terminations wherein; Other end string the 9th resistance R 9 is after the tenth resistance R 10 ground connection, and the common port of said the 4th resistance R 4 and the 9th resistance R 9 is the sampling end of said first bleeder circuit.
Said second bleeder circuit is made up of the 3rd resistance R 3, the 7th resistance R 7, the 8th resistance R 8; The forward output of the said electric bridge 3 of the 3rd resistance R 3 one terminations wherein; Other end string the 7th resistance R 7 is after the 8th resistance R 8 ground connection, and the common port of said the 3rd resistance R 3 and the 7th resistance R 7 is the sampling end of said second bleeder circuit.
Be serially connected with 11 resistance R 11 between the control end of said overcurrent controllable silicon BT1 and the ground; Also be serially connected with first capacitor C 1 between the control end of overcurrent controllable silicon BT1 and the ground; The control end of overcurrent controllable silicon BT1 also is connected with the negative terminal of the 5th diode D5, the positive ending grounding of the 5th diode D5.
Except that overcurrent controllable silicon (BT1), other circuit structures of current foldback circuit are: the first input end of said electric bridge 3 is gone here and there successively and is connect power firestreak behind the live wire switch of live wire induction coil, said release 1 of said overcurrent protector 2;
Second input of said electric bridge 3 is gone here and there successively and is connect zero-power line behind the zero line switch of zero line induction coil, release 1 of induction coil, overcurrent protector 2 of said release 1.
Claims (8)
1. safety power supply intellective protector; Comprise the current foldback circuit of forming by release (1), overcurrent protector (2), electric bridge (3) and overcurrent controllable silicon (BT1); Wherein the anode of overcurrent controllable silicon (BT1) connects the forward output of said electric bridge (3), the negative electrode of overcurrent controllable silicon (BT1) and the negative sense output head grounding of electric bridge (3); The control end of overcurrent controllable silicon (BT1) is connected in series ground connection behind the overcurrent induction coil of said overcurrent protector (2); It is characterized in that: the two ends of said overcurrent controllable silicon (BT1) also and be connected to voltage controlled silicon (BT2), the control end of said voltage controlled silicon (BT2) is connected with overvoltage crowbar and under-voltage protecting circuit;
Said overvoltage crowbar comprises piezo-resistance (DB); The control end of the said voltage controlled silicon of this piezo-resistance (DB) termination (BT2); The other end is connected the sampling end at first bleeder circuit middle part; The head end of this first bleeder circuit connects the forward output of said electric bridge (3), and the end of this first bleeder circuit connects the negative sense output of said electric bridge (3);
Said under-voltage protecting circuit comprises second bleeder circuit; The head end of this second bleeder circuit connects the forward output of said electric bridge (3); The end of this second bleeder circuit connects the negative sense output of said electric bridge (3); Be positioned at the base stage that meets triode (BT3) behind sampling end string the 5th resistance (R5) at this second bleeder circuit middle part; Connect the forward output of said electric bridge (3) behind emitter string second resistance (R2) of this triode (BT3), the emitter of this triode (BT3) also connects the negative terminal of electric capacity of voltage regulation (C5), the base stage of the said triode of positive termination (BT3) of this electric capacity of voltage regulation (C5); The collector electrode of said triode (BT3) connects the anode of the 6th diode (D6), and the negative electrode of the 6th diode (D6) connects the control end of said voltage controlled silicon (BT2).
2. safety power supply intellective protector according to claim 1 is characterized in that: the anode of said the 6th diode (D6) is connected with ground through electrochemical capacitor (C4), and the negative electrode of the 6th diode (D6) is connected with through filter capacitor (C2).
3. safety power supply intellective protector according to claim 1 is characterized in that: the emitter of said triode (BT3) is connected with ground through voltage stabilizing didoe (D7).
4. safety power supply intellective protector according to claim 1 is characterized in that: be connected with the 3rd electric capacity (C3) between the sampling end of said first bleeder circuit and the ground.
5. safety power supply intellective protector according to claim 1; It is characterized in that: said first bleeder circuit is made up of the 4th resistance (R4), the 9th resistance (R9), the tenth resistance (R10); The forward output of the said electric bridge of the 4th resistance (R4) termination (3) wherein; Other end string the 9th resistance (R9) is after the tenth resistance (R10) ground connection, and the common port of said the 4th resistance (R4) and the 9th resistance (R9) is the sampling end of said first bleeder circuit.
6. safety power supply intellective protector according to claim 1; It is characterized in that: said second bleeder circuit is made up of the 3rd resistance (R3), the 7th resistance (R7), the 8th resistance (R8); The forward output of the said electric bridge of the 3rd resistance (R3) termination (3) wherein; Other end string the 7th resistance (R7) is after the 8th resistance (R8) ground connection, and the common port of said the 3rd resistance (R3) and the 7th resistance (R7) is the sampling end of said second bleeder circuit.
7. safety power supply intellective protector according to claim 1; It is characterized in that: be serially connected with 11 resistance (R11) between the control end of said overcurrent controllable silicon (BT1) and the ground; Also be serially connected with first electric capacity (C1) between the control end of overcurrent controllable silicon (BT1) and the ground; The control end of overcurrent controllable silicon (BT1) also is connected with the negative terminal of the 5th diode (D5), the positive ending grounding of the 5th diode (D5).
8. safety power supply intellective protector according to claim 1 is characterized in that: the first input end of said electric bridge (3) is gone here and there successively and is connect power firestreak behind the live wire switch of the live wire induction coil of said overcurrent protector (2), said release (1);
Second input of said electric bridge (3) is gone here and there successively and is connect zero-power line behind the zero line switch of zero line induction coil, release (1) of induction coil, overcurrent protector (2) of said release (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120427526XU CN202333734U (en) | 2011-11-02 | 2011-11-02 | Intelligent protector of safety source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120427526XU CN202333734U (en) | 2011-11-02 | 2011-11-02 | Intelligent protector of safety source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202333734U true CN202333734U (en) | 2012-07-11 |
Family
ID=46445700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120427526XU Expired - Fee Related CN202333734U (en) | 2011-11-02 | 2011-11-02 | Intelligent protector of safety source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202333734U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104836197A (en) * | 2015-04-13 | 2015-08-12 | 国家电网公司 | Low-voltage user overvoltage under-voltage circuit breaker |
-
2011
- 2011-11-02 CN CN201120427526XU patent/CN202333734U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104836197A (en) * | 2015-04-13 | 2015-08-12 | 国家电网公司 | Low-voltage user overvoltage under-voltage circuit breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120711 Termination date: 20141102 |
|
| EXPY | Termination of patent right or utility model |