CN204205556U - Leakage protecting plug - Google Patents
Leakage protecting plug Download PDFInfo
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- CN204205556U CN204205556U CN201420570294.7U CN201420570294U CN204205556U CN 204205556 U CN204205556 U CN 204205556U CN 201420570294 U CN201420570294 U CN 201420570294U CN 204205556 U CN204205556 U CN 204205556U
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- live wire
- leakage protecting
- magnetic induction
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Abstract
The utility model discloses a kind of leakage protecting plug; comprise live wire, zero line, ground wire, release, rectification circuit and controllable silicon; this plug is provided with voltage stabilizing circuit; described voltage stabilizing circuit two ends are connected with power-sensing circuit; described power-sensing circuit is provided with power magnetic induction loop, and described power magnetic induction loop is passed by live wire or zero line.The utility model is by arranging power-sensing circuit at live wire end, and after water heater has heated, power coil automatic cut-off power, ensures that user uses the safety of water heater.
Description
Technical field
The utility model relates to electric heater electric security protector device field, particularly a kind of leakage protecting plug.
Background technology
When the water heater of prior art is heated to keeping warm mode; leakage protecting plug does not trip; therefore whole hot water has a high regard for the state being so in energising; once there is electric leakage situation; water heater will be used to bring huge potential safety hazard to user; therefore, can the Novel earth leakage protection plug of deenergization when needing a kind of water heater to be heated to keeping warm mode.
Utility model content
(1) technical problem that will solve
The purpose of this utility model will overcome above-mentioned shortcoming exactly, aims to provide a kind of leakage protecting plug.
(2) technical scheme
For solving the problem; the utility model proposes a kind of leakage protecting plug; comprise live wire, zero line, ground wire, release, rectification circuit and controllable silicon; this plug is provided with voltage stabilizing circuit; described voltage stabilizing circuit two ends are connected with power-sensing circuit; described power-sensing circuit is provided with power magnetic induction loop, and described power magnetic induction loop is passed by live wire or zero line.
Further, described voltage stabilizing circuit comprises voltage stabilizing didoe and the filter capacitor one in parallel with it.
Further, described power-sensing circuit comprises diode, filter capacitor two and triode, described diode connects one end of power magnetic induction loop, described filter capacitor two described diode in parallel, described transistor base connects diode, the current output terminal of described triode connects the other end of power magnetic induction loop, and current output terminal connects zero line.
Further, this plug is provided with IC amplifying circuit, and described IC amplifying circuit is connected with zero sequence current mutual inductor, for responding to zero line, live wire electric current.
Further, between described IC amplifying circuit and control machines pole, be provided with the first reverse isolation circuit, between described power-sensing circuit and control machines pole, be provided with the second reverse isolation circuit.
Further, piezo-resistance is provided with between described zero line and live wire.
(3) beneficial effect
Compared with prior art, the utility model has the following advantages: the utility model is by arranging power-sensing circuit at live wire end, and after water heater has heated, power coil automatic cut-off power, ensures that user uses the safety of water heater.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of the embodiment one of leakage protecting plug of the present utility model;
Fig. 2 is the circuit theory diagrams of the embodiment two of leakage protecting plug of the present utility model.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples for illustration of the utility model, but are not used for limiting scope of the present utility model.
Embodiment one
Circuit theory diagrams as shown in Figure 1; leakage protecting plug of the present utility model; comprise live wire L, zero line N, ground wire E, release K, rectification circuit and controllable silicon SCR; rectification circuit is rectifier diode; this plug is provided with voltage stabilizing circuit; described voltage stabilizing circuit two ends are connected with power-sensing circuit, and described power-sensing circuit is provided with power magnetic induction loop ZT1, and described power magnetic induction loop ZT1 is passed by live wire L or zero line N.
Described voltage stabilizing circuit comprise voltage stabilizing didoe ZD and filter capacitor one C1 in parallel with it, voltage stabilizing didoe ZD and filter capacitor one C1 with the use of, for power-sensing circuit provides stable voltage.
Described power-sensing circuit comprises diode D2, filter capacitor two C2 and triode Q, diode D2 plays the effect preventing adverse current, described diode D2 connects one end of power magnetic induction loop ZT1, described filter capacitor two C2 described diode D2 in parallel, described triode Q base stage connects diode D2, the current output terminal of described triode Q connects the other end of power magnetic induction loop ZT1, and current output terminal connects zero line N, when live wire L does not have electric current, power magnetic induction loop ZT1 does not produce induced current, diode D2 does not have voltage to pass through, thus triode Q and controllable silicon SCR trigger electrode junction voltage raise, controllable silicon SCR conducting, make release K action, otherwise, triode Q is consistent with controllable silicon SCR trigger electrode junction voltage and zero line N voltage, for the not conducting of low-voltage controllable silicon SCR.
Be provided with piezo-resistance ZR between described zero line N and live wire L, play the effect of Anti-surging.
When the utility model uses, electric current enters from live wire L, enter over commutation circuit and dropping resistor, for power-sensing circuit and voltage stabilizing circuit are powered, when live wire L or zero line N does not have electric current, after instant heating hydrophone has heated, power magnetic induction loop ZT1 does not produce induced voltage, diode does not have voltage to pass through, thus triode Q and controllable silicon SCR trigger electrode junction voltage raise, controllable silicon SCR conducting, make release K action, otherwise triode Q is consistent with controllable silicon SCR trigger electrode junction voltage and zero line N voltage, it is the not conducting of low-voltage controllable silicon SCR.Protection plug of the present utility model, after water heater has heated, power coil automatic cut-off power, has ensured that user uses the safety of water heater.
Embodiment two
Circuit theory diagrams as shown in Figure 2; leakage protecting plug of the present utility model; comprise live wire L, zero line N, ground wire E, release K, IC leakage protection circuit, rectification circuit and controllable silicon SCR; rectification circuit is rectifier diode; this plug is provided with voltage stabilizing circuit; described voltage stabilizing circuit two ends are connected with power-sensing circuit, and described power-sensing circuit is provided with power magnetic induction loop ZT1, and described power magnetic induction loop ZT1 is passed by live wire L or zero line N.
Described power-sensing circuit comprises diode D4, filter capacitor two C8 and triode Q, diode D4 plays the effect preventing adverse current, described diode D4 connects one end of power magnetic induction loop ZT1, described filter capacitor two C8 described diode D4 in parallel, described triode Q base stage connects diode D4, the current output terminal of described triode Q connects the other end of power magnetic induction loop ZT1, when live wire L or zero line N does not have electric current, power magnetic induction loop ZT1 does not produce induced current, diode D4 does not have voltage to pass through, thus triode Q and controllable silicon SCR trigger electrode junction voltage raise, controllable silicon SCR conducting, make release K action, otherwise, triode Q is consistent with controllable silicon SCR trigger electrode junction voltage and zero line N voltage, for the not conducting of low-voltage controllable silicon SCR.
Described IC amplifying circuit is connected with zero sequence current mutual inductor ZT2, for responding to zero live wire electric current.
The first reverse isolation circuit is provided with between described IC amplifying circuit and controllable silicon SCR trigger electrode, the second reverse isolation circuit is provided with between described power-sensing circuit and controllable silicon SCR trigger electrode, first reverse isolation circuit is diode D2, and the second reverse isolation circuit is D3.
Be provided with piezo-resistance ZR between described zero line N and live wire L, play the effect of Anti-surging.
The present embodiment also comprises the hookup between zero line N and live wire L, and described hookup comprises button T and resistance R5, and hookup is through zero sequence current mutual inductor ZT2.
The leakage protecting plug that the present embodiment provides; IC amplifying circuit and zero sequence current mutual inductor ZT2 coordinate; for responding to the drain conditions of zero live wire, during zero live wire electric leakage, zero sequence current mutual inductor ZT2 responds to generation induced voltage; induced electricity made controllable silicon SCR trigger after compressing into IC chip; thus cause tripping operation, meanwhile, zero live wire power situation can be responded to; specific implementation process participates in embodiment one, and the leakage protecting plug that the present embodiment provides has both zero live wire earth leakage protective and power detection.
Below be only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model know-why; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (6)
1. a leakage protecting plug; comprise live wire, zero line, ground wire, release, rectification circuit and controllable silicon; it is characterized in that: this plug is provided with voltage stabilizing circuit; described voltage stabilizing circuit two ends are connected with power-sensing circuit; described power-sensing circuit is provided with power magnetic induction loop, and described power magnetic induction loop is passed by live wire or zero line.
2. leakage protecting plug according to claim 1, is characterized in that: described voltage stabilizing circuit comprises voltage stabilizing didoe and the filter capacitor one in parallel with it.
3. leakage protecting plug according to claim 2; it is characterized in that: described power-sensing circuit comprises diode, filter capacitor two and triode; described diode connects one end of power magnetic induction loop; described filter capacitor two described diode in parallel; described transistor base connects diode, and the current output terminal of described triode connects the other end of power magnetic induction loop.
4. leakage protecting plug according to claim 3, is characterized in that: this plug is provided with IC amplifying circuit, and described IC amplifying circuit is connected with zero sequence current mutual inductor, for responding to zero line, live wire electric current.
5. leakage protecting plug according to claim 4, is characterized in that: be provided with the first reverse isolation circuit between described IC amplifying circuit and control machines pole, is provided with the second reverse isolation circuit between described power-sensing circuit and control machines pole.
6. the leakage protecting plug according to any one of Claims 1-4, is characterized in that: be provided with piezo-resistance between described zero line and live wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420570294.7U CN204205556U (en) | 2014-09-29 | 2014-09-29 | Leakage protecting plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420570294.7U CN204205556U (en) | 2014-09-29 | 2014-09-29 | Leakage protecting plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204205556U true CN204205556U (en) | 2015-03-11 |
Family
ID=52663476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420570294.7U Active CN204205556U (en) | 2014-09-29 | 2014-09-29 | Leakage protecting plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204205556U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104319730A (en) * | 2014-09-29 | 2015-01-28 | 余姚市嘉荣电子电器有限公司 | Leakage protection plug |
| CN109323464A (en) * | 2018-11-12 | 2019-02-12 | 广东万博电气有限公司 | A kind of electric heater |
| CN110190479A (en) * | 2019-04-30 | 2019-08-30 | 东莞市伊家智能科技有限公司 | A kind of intelligent socket and intelligence control system with creepage protection function |
-
2014
- 2014-09-29 CN CN201420570294.7U patent/CN204205556U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104319730A (en) * | 2014-09-29 | 2015-01-28 | 余姚市嘉荣电子电器有限公司 | Leakage protection plug |
| CN109323464A (en) * | 2018-11-12 | 2019-02-12 | 广东万博电气有限公司 | A kind of electric heater |
| CN110190479A (en) * | 2019-04-30 | 2019-08-30 | 东莞市伊家智能科技有限公司 | A kind of intelligent socket and intelligence control system with creepage protection function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |