CN202210598U - Dual anti-creeping socket - Google Patents
Dual anti-creeping socket Download PDFInfo
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- CN202210598U CN202210598U CN2011202945977U CN201120294597U CN202210598U CN 202210598 U CN202210598 U CN 202210598U CN 2011202945977 U CN2011202945977 U CN 2011202945977U CN 201120294597 U CN201120294597 U CN 201120294597U CN 202210598 U CN202210598 U CN 202210598U
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Abstract
Provided is a dual anti-creeping socket, characterized in that: the two-phase linkage knife switch of a breaker is serially connected with the live line power supply input end and the zero line power supply input end of a power supply connecting line respectively; a first end of an electrical apparatus release coil of the breaker is connected with the live line of a dual anti-creeping socket power supply connecting line; a second end of the electrical apparatus release coil is connected with the input end anode of a rectifier bridge; the input end cathode of the rectifier bridge is connected with the zero line of the power supply connecting line; the output end anode of the rectifier bridge is connected with the anode of a single-phase silicon controlled rectifier; the output end cathode of the rectifier bridge and the cathode of the single-phase silicon controlled rectifier are all connected with the zero line of a tri-phase grounding jack; the input end of a leakage current detection circuit is connected to the power supply connecting line between the two-phase linkage knife switch and the tri-phase grounding jack; the output end of the leakage current detection circuit is connected with the control end of the single-phase silicon controlled rectifier; the input end of a drain voltage detection circuit is connected to the ground line of the tri-phase grounding jack; and the output end of the drain voltage detection circuit is connected with the control end of the single-phase silicon controlled rectifier.
Description
Technical field:
The utility model relates to earth leakage protective device, relates in particular to a kind of double leak-proof electrical socket.
Background technology:
At present, existing earth leakage protective device is the mode that adopts zero-sequence current to detect, but might not safety for some special occasions; Such as when having a bath with water heater, human body resistance can sharply descend, and tens volts of voltages just possibly make the people fatal; And common earth leakage protective is difficult to this is protected, and more reliable in order to make earth leakage protective, earth leakage protective device not only need have the leakage current measuring ability; Also need possess the function that drain voltage directly detects; Make it safer in the use, especially on the water heater that family expenses are had a bath, can possess higher coefficient of safety.
The utility model content:
The purpose of the utility model provides a kind of double leak-proof electrical socket, and leakage current, drain voltage are detected simultaneously and protect.
A kind of double leak-proof electrical socket; Comprise plate, power supply connecting line; Plate is provided with three hole slots, and the live wire of three hole slots connects guide card, zero line connects live wire, the zero line that guide card connects the connecting line of supplying power respectively, wherein: also comprise circuit breaker, rectifier bridge, controllable silicon, leakage current detection circuit, drain voltage testing circuit; In the circuit breaker two disconnecting link that links is serially connected in live wire, the zero line power supply input of power supply connecting line respectively; First end of trip coil connects the live wire of power supply connecting line in the circuit breaker, and second end of trip coil connects the input anode of rectifier bridge, and the input cathode of rectifier bridge connects the zero line of power supply connecting line; It is anodal that the output head anode of rectifier bridge connects silicon controlled, and the zero line that the negative pole of output end of rectifier bridge and silicon controlled negative pole all connect three hole slots connects guide card; The input of leakage current detection circuit is connected in two in the circuit breaker and links on the power supply connecting line between disconnecting link and the three hole slots, and the output of leakage current detection circuit connects the silicon controlled control end; The input of drain voltage testing circuit is connected on the ground wire of three hole slots, and the output of drain voltage testing circuit connects the silicon controlled control end.
Described double leak-proof electrical socket; Wherein: described leakage current detection circuit comprises zero sequence current mutual inductor, first resistance, first electric capacity, first diode, second diode; Elementary winding two phase lines first end of zero sequence current mutual inductor connects live wire, the zero line of the connecting line of supplying power respectively; The live wire that elementary winding two phase lines second end of zero sequence current mutual inductor connects three hole slots respectively connects guide card, zero line connects guide card; First resistance is connected in parallel on the secondary winding output of zero sequence current mutual inductor; First electric capacity is connected in parallel on the secondary winding output of zero sequence current mutual inductor; The be in series series circuit that constitutes of first diode, second diode is attempted by the secondary winding output of zero sequence current mutual inductor, and the positive pole of first diode, second diode institute formation series circuit connects the silicon controlled control end, and the zero line that the negative pole of first diode, second diode institute formation series circuit connects three hole slots connects guide card.
Described double leak-proof electrical socket; Wherein: described drain voltage testing circuit comprises the 3rd diode, second electric capacity, potentiometer, second resistance; The positive pole of the 3rd diode connects the ground wire of three hole slots; The negative pole of the 3rd diode is connected the silicon controlled control end with potentiometer, second resistance after being connected in series, and the negative pole that second electric capacity is connected the 3rd diode is connected between the guide card with the zero line of three hole slots.
Described double leak-proof electrical socket, wherein: also comprise the leak(age) test circuit, comprise the 4th resistance, leak(age) test switch, the live wire that the series circuit that the 4th resistance, leak(age) test switch constitute is connected three hole slots connects guide card, zero line connects between the guide card.
Described double leak-proof electrical socket, wherein: also comprise excess voltage protection, described excess voltage protection comprises a piezo-resistance, this piezo-resistance is connected between the zero line of second end of trip coil and the connecting line of supplying power.
The utility model will reach following technique effect after adopting technique scheme:
The double leak-proof electrical socket of the utility model can detect leakage current, drain voltage simultaneously, improves safe application performance, and further, the drain voltage testing circuit can be adjusted sensitivity according to field condition, and it is the highest that coefficient of safety is arrived; In addition, be provided with the leak(age) test circuit, be used for day-to-day test.
Description of drawings:
Fig. 1 is the circuit theory diagrams of the utility model double leak-proof electrical socket.
Embodiment:
The double leak-proof electrical socket of the utility model; Comprise plate, power supply connecting line; Plate is provided with three hole slots, and the live wire of three hole slots connects guide card L, zero line connects live wire L, the zero line N that guide card N connects the connecting line of supplying power respectively, like Fig. 1; Wherein: also comprise circuit breaker SA1, excess voltage protection, rectifier bridge, single-phase silicon-controlled VS1, leakage current detection circuit, drain voltage testing circuit; Among the circuit breaker SA1 two disconnecting link that links is serially connected in live wire L, the zero line N input of supply power of power supply connecting line respectively, and first end of trip coil connects the live wire L of power supply connecting line among the circuit breaker SA1, the input anode of second end connection rectifier bridge of trip coil; The input cathode of rectifier bridge connects the zero line N of power supply connecting line; The output head anode of rectifier bridge connects the positive pole of single-phase silicon-controlled VS1, and the zero line that the negative pole of output end of rectifier bridge and the negative pole of single-phase silicon-controlled VS1 all connect three hole slots connects guide card N, and rectifier bridge is made up of four diode D1 ~ D4; The input of leakage current detection circuit is connected in two among the circuit breaker SA1 and links on the power supply connecting line between disconnecting link and the three hole slots, and the output of leakage current detection circuit connects the control end of single-phase silicon-controlled VS1; The ground wire that the input of drain voltage testing circuit is connected in three hole slots connects on the guide card PE, and the output of drain voltage testing circuit connects the control end of single-phase silicon-controlled VS1.
Described leakage current detection circuit comprises zero sequence current mutual inductor T1, first resistance R 1, first capacitor C 1, the first diode D5, the second diode D6; Elementary winding two phase lines first end of zero sequence current mutual inductor T1 connects live wire L, the zero line N of the connecting line of supplying power respectively; The live wire that elementary winding two phase lines second end of zero sequence current mutual inductor T1 connects three hole slots respectively connects guide card L, zero line connects guide card N; First resistance R 1 is connected in parallel on the secondary winding output of zero sequence current mutual inductor T1; First capacitor C 1 is connected in parallel on the secondary winding output of zero sequence current mutual inductor T1; The be in series series circuit that constitutes of the first diode D5, the second diode D6 is attempted by the secondary winding output of zero sequence current mutual inductor T1; The positive pole of the first diode D5, the second diode D6 institute formation series circuit connects the control end of single-phase silicon-controlled VS1, and the zero line that the negative pole of the first diode D5, the second diode D6 institute formation series circuit connects three hole slots connects guide card N.
Described drain voltage testing circuit comprises the 3rd diode D7, second capacitor C 2, potentiometer RP1, second resistance R 3; The positive pole of the 3rd diode D7 connects the ground wire PE of three hole slots; The negative pole of the 3rd diode D7 is connected the control end of single-phase silicon-controlled VS1 with potentiometer RP1, second resistance R, 3 serial connection backs, the negative pole that second capacitor C 2 is connected the 3rd diode D7 is connected between the guide card N with the zero line of three hole slots.
Described double leak-proof electrical socket; Also comprise the leak(age) test circuit; Comprise the 4th resistance R 2, leak(age) test switch S 1; Leak(age) test switch S 1 is often driven button for what can break off from recovering to upspring after depressing, and the live wire that the series circuit that the 4th resistance R 2, leak(age) test switch S 1 constitute is connected three hole slots connects guide card L, zero line connects between the guide card N.
The utility model double leak-proof electrical socket is primarily aimed at the higher occasion of requirement of shelter, and is first-class such as publilc baths, pot-type boiler.Ground line position above the common life power supply base has a lot of not uses, though electrical appliance itself has the ground protection line, above socket, does not have earth connection; And when electric leakage appears in the electrical appliance shell; Will get an electric shock after the people touches and cause danger, and whether the utility model double leak-proof electrical socket detection device shell of taking the initiative charged, when the electrical appliance shell to zero line voltage during greater than certain numerical value; Will make the controllable silicon VS1 triggering and conducting on the utility model double leak-proof electrical socket; Thereby trip coil is powered on, and the disconnecting link that links of two among the circuit breaker SA1 breaks off, thereby plays the purpose of protection personal safety.As long as the electrical appliance casing is charged, no matter whether the people gets an electric shock, the outage of all can tripping of the utility model double leak-proof electrical socket.
Diode D1 ~ D4 constitutes bridge rectifier among Fig. 1; The DC operation condition is provided for single-phase silicon-controlled VS1; Excess voltage protection is to adopt piezo-resistance RV1; Piezo-resistance RV1 is connected between the zero line of second end of trip coil and the connecting line of supplying power, and piezo-resistance RV1 is used for overvoltage protection; On the control end of single-phase silicon-controlled VS1, be connected with leakage current detection circuit, drain voltage testing circuit; Leakage current detection circuit is when the human body that uses said electrical appliance takes place to get an electric shock; Can cause the zero sequence current mutual inductor output current, on the control end of signal loading behind resistance R 1, capacitor C 1, diode D5, the D6 amplitude limit, when the electric shock threshold value of leakage current greater than single-phase silicon-controlled VS1 setting at single-phase silicon-controlled VS1; Single-phase silicon-controlled VS1 will conducting; Trip coil powers on, and the disconnecting link that links of two among the circuit breaker SA1 breaks off, and makes three hole slots outages; The drain voltage testing circuit; Be to connect guide card PE by the ground wire jack of three hole slots the voltage between the zero line N is carried on the control end of single-phase silicon-controlled VS1 after forming voltage on diode D7 rectification, capacitor C 2 filtering, adjustable resistance RP1 and the resistance R 3; As long as the voltage above the electrical appliance shell arrives respective degrees greatly, will trigger single-phase silicon-controlled VS1 conducting, trip coil is powered on; Thereby the disconnecting link that links of two among the circuit breaker SA1 is broken off, also can play the effect of protection electrical appliance.
Points for attention when using the utility model double leak-proof electrical socket:
1, the position of the utility model double leak-proof electrical socket live wire, zero line when wiring will connect correctly, otherwise just closes not brake application;
Whether if 2 the utility model double leak-proof electrical sockets are used in above the water heater, the ground wire of water heater itself will link to each other with the metal section and part of its delivery port, charged to detect water body, and this point is very important.
According to the difference of use occasion, select the secure threshold boundary of drain voltage, scalable current potential device RP1 realizes the secure threshold adjustment of drain voltage, it is the highest that coefficient of safety is arrived.
Claims (5)
1. double leak-proof electrical socket; Comprise plate, power supply connecting line; Plate is provided with three hole slots, and the live wire of three hole slots connects guide card, zero line connects live wire, the zero line that guide card connects the connecting line of supplying power respectively, it is characterized in that: also comprise circuit breaker, rectifier bridge, controllable silicon, leakage current detection circuit, drain voltage testing circuit; In the circuit breaker two disconnecting link that links is serially connected in live wire, the zero line power supply input of power supply connecting line respectively; First end of trip coil connects the live wire of power supply connecting line in the circuit breaker, and second end of trip coil connects the input anode of rectifier bridge, and the input cathode of rectifier bridge connects the zero line of power supply connecting line; It is anodal that the output head anode of rectifier bridge connects silicon controlled, and the zero line that the negative pole of output end of rectifier bridge and silicon controlled negative pole all connect three hole slots connects guide card; The input of leakage current detection circuit is connected in two in the circuit breaker and links on the power supply connecting line between disconnecting link and the three hole slots, and the output of leakage current detection circuit connects the silicon controlled control end; The input of drain voltage testing circuit is connected on the ground wire of three hole slots, and the output of drain voltage testing circuit connects the silicon controlled control end.
2. double leak-proof electrical socket as claimed in claim 1; It is characterized in that: described leakage current detection circuit comprises zero sequence current mutual inductor, first resistance, first electric capacity, first diode, second diode; Elementary winding two phase lines first end of zero sequence current mutual inductor connects live wire, the zero line of the connecting line of supplying power respectively; The live wire that elementary winding two phase lines second end of zero sequence current mutual inductor connects three hole slots respectively connects guide card, zero line connects guide card; First resistance is connected in parallel on the secondary winding output of zero sequence current mutual inductor; First electric capacity is connected in parallel on the secondary winding output of zero sequence current mutual inductor; The be in series series circuit that constitutes of first diode, second diode is attempted by the secondary winding output of zero sequence current mutual inductor, and the positive pole of first diode, second diode institute formation series circuit connects the silicon controlled control end, and the zero line that the negative pole of first diode, second diode institute formation series circuit connects three hole slots connects guide card.
3. double leak-proof electrical socket as claimed in claim 2; It is characterized in that: described drain voltage testing circuit comprises the 3rd diode, second electric capacity, potentiometer, second resistance; The positive pole of the 3rd diode connects the ground wire of three hole slots; The negative pole of the 3rd diode is connected the silicon controlled control end with potentiometer, second resistance after being connected in series, and the negative pole that second electric capacity is connected the 3rd diode is connected between the guide card with the zero line of three hole slots.
4. double leak-proof electrical socket as claimed in claim 3; It is characterized in that: also comprise the leak(age) test circuit; Comprise the 4th resistance, leak(age) test switch, the live wire that the series circuit that the 4th resistance, leak(age) test switch constitute is connected three hole slots connects guide card, zero line connects between the guide card.
5. like each described double leak-proof electrical socket of claim 1 to 4; It is characterized in that: also comprise excess voltage protection; Described excess voltage protection comprises a piezo-resistance, and this piezo-resistance is connected between the zero line of second end of trip coil and the connecting line of supplying power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202945977U CN202210598U (en) | 2011-08-15 | 2011-08-15 | Dual anti-creeping socket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202945977U CN202210598U (en) | 2011-08-15 | 2011-08-15 | Dual anti-creeping socket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202210598U true CN202210598U (en) | 2012-05-02 |
Family
ID=45990141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202945977U Expired - Fee Related CN202210598U (en) | 2011-08-15 | 2011-08-15 | Dual anti-creeping socket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202210598U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104538955A (en) * | 2014-12-23 | 2015-04-22 | 黄华道 | Power supply device with overcurrent protection function |
| CN104752913A (en) * | 2015-03-20 | 2015-07-01 | 中山市唐王光电技术有限公司 | Universal safety electric socket |
| WO2016078536A1 (en) * | 2014-11-18 | 2016-05-26 | 广州市巽腾信息科技有限公司 | Receptacle capable of detecting external leakage voltage |
| CN110444963A (en) * | 2019-08-23 | 2019-11-12 | 佛山市开力电气有限公司 | The intelligent protection system of modularization intelligent earth leakage protective socket |
| CN111277016A (en) * | 2020-03-02 | 2020-06-12 | 桐乡佳车科技股份有限公司 | Anti-electric-shock charging equipment for mobile carrier in textile workshop and using method of charging equipment |
-
2011
- 2011-08-15 CN CN2011202945977U patent/CN202210598U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016078536A1 (en) * | 2014-11-18 | 2016-05-26 | 广州市巽腾信息科技有限公司 | Receptacle capable of detecting external leakage voltage |
| CN104538955A (en) * | 2014-12-23 | 2015-04-22 | 黄华道 | Power supply device with overcurrent protection function |
| CN104752913A (en) * | 2015-03-20 | 2015-07-01 | 中山市唐王光电技术有限公司 | Universal safety electric socket |
| CN110444963A (en) * | 2019-08-23 | 2019-11-12 | 佛山市开力电气有限公司 | The intelligent protection system of modularization intelligent earth leakage protective socket |
| CN110444963B (en) * | 2019-08-23 | 2020-09-08 | 佛山市开力电气有限公司 | Intelligent protection system of modularized intelligent leakage protection socket |
| CN111277016A (en) * | 2020-03-02 | 2020-06-12 | 桐乡佳车科技股份有限公司 | Anti-electric-shock charging equipment for mobile carrier in textile workshop and using method of charging equipment |
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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: 20120502 Termination date: 20140815 |
|
| EXPY | Termination of patent right or utility model |