CN204720957U - Automatically power on intelligent leakage protector - Google Patents
Automatically power on intelligent leakage protector Download PDFInfo
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- CN204720957U CN204720957U CN201520316750.XU CN201520316750U CN204720957U CN 204720957 U CN204720957 U CN 204720957U CN 201520316750 U CN201520316750 U CN 201520316750U CN 204720957 U CN204720957 U CN 204720957U
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- optocoupler
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- leakage protector
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- 230000001012 protector Effects 0.000 title claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 19
- 229910052710 silicon Inorganic materials 0.000 claims description 19
- 239000010703 silicon Substances 0.000 claims description 19
- 239000003381 stabilizer Substances 0.000 claims description 15
- 230000001681 protective effect Effects 0.000 abstract description 14
- 230000006870 function Effects 0.000 abstract description 13
- 238000013461 design Methods 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 abstract description 3
- 238000002955 isolation Methods 0.000 abstract description 3
- 230000005611 electricity Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 238000011156 evaluation Methods 0.000 description 6
- 230000009897 systematic effect Effects 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 5
- 230000002159 abnormal effect Effects 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009885 systemic effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The open one of the utility model powers on intelligent leakage protector automatically; comprise live wire, zero line, ground wire, body of wall line, release, regulator rectifier circuit, amplifying circuit, the zero-sequence transformer be connected with amplifying circuit and ground wire instrument transformer, also comprise optocoupler U1, optocoupler U2, optocoupler U3 and controller IC 1.It is the shortcoming and the potential safety hazard design that overcome existing all earth leakage protective devices that the utility model possesses the intelligent leakage protector that automatically powers on, and be the earth leakage protective device of the omnibearing protection type that long-pending all functions are integrated, intelligent and safe is reliable; Water outlet power-off, accomplishes water power isolation result of use, does not have use safety hidden danger; Overcome the exception that all charged and wiring error of ground wire etc. is brought, system all can the effective various features such as recognition detection and control.
Description
Technical field
The utility model relates to Electrical Safety resist technology field, especially relates to the intelligent leakage protector that automatically powers on.
Background technology
The defencive function of earth leakage protective device is under being based upon the normal prerequisite of power supply; ground wire abnormal charged or load electric leakage just provides the defencive function cutting off load supplying loop. and leak guarantor's device power supply complete machine is quit work reach energy-conservation object because user's ubiquity socket switch goes to cut off; just because of this, protect device to lose the job power supply now ground wire is abnormal if leak chargedly will cause leaking guarantor's device and do not trip and cause electric shock.Like this, guarantor's device power supply is leaked to bad also equivalent closedown of female contact, has a strong impact on personal safety hidden danger.
Utility model content
(1) technical problem that will solve
The purpose of this utility model will overcome above-mentioned shortcoming exactly, aims to provide one and automatically to power on intelligent leakage protector.
(2) technical scheme
For solving the problem, the utility model proposes one automatically to power on intelligent leakage protector, comprise live wire, zero line, ground wire, release, regulator rectifier circuit, amplifying circuit, the zero-sequence transformer be connected with amplifying circuit and ground wire instrument transformer, also comprise optocoupler U1, optocoupler U2, optocoupler U3 and controller IC 1; Pin 2 and the zero line of described optocoupler U1 are electrically connected, and the pin 1 of optocoupler U1 connects the pin 4 of described optocoupler U2, the A pin of described optocoupler U1 pin 4 connection control device IC1, and the pin 3 of optocoupler U1 connects the pin 2 of optocoupler U2; The B pin of the pin 1 connection control device IC1 of described optocoupler U2, pin 2 and the ground wire of described optocoupler U2 are electrically connected; Be provided with voltage-stabiliser tube D9 between the pin 1 of described optocoupler U3 and ground wire, pin 3 ground connection of described optocoupler U3, the pin 4 of optocoupler U3 connects the C pin of controller; Ground wire instrument transformer is used for ground line current and detects, and its output is connected with controller IC 1.
Further, ground wire electrification indicator light LED1 is also provided with between described zero line and optocoupler U1.
Further, voltage-stabiliser tube D8 is also provided with between 3 pin of described optocoupler U2 and 4 pin.
Further, between described ground wire and optocoupler U3, be also provided with voltage-stabiliser tube D9, between described voltage-stabiliser tube D9 and body of wall line, be also connected with protection diode D2.
Further, described controller IC 1 is also connected with water flow switch J1.
Further, described release is also provided with keeping coil L1.
Further, this circuit is also provided with controllable silicon Q7 and controllable silicon Q8, and described controllable silicon Q7 is for controlling keeping coil L1; Trigger electrode and the controllable silicon Q8 trigger electrode of described controllable silicon Q7 are all controlled by controller IC 1, and described controllable silicon Q8 is for controlling the break-make of power supply.
Further, this circuit is also provided with high-temperature protection circuit and warning device.
(3) beneficial effect
Compared with prior art, the utility model has the following advantages: the intelligent leakage protector that automatically powers on is the shortcoming and the potential safety hazard design that overcome existing all earth leakage protective devices, be the earth leakage protective device of the omnibearing protection type that long-pending all functions are integrated, intelligent and safe is reliable; Water outlet power-off, accomplishes water power isolation result of use, does not have use safety hidden danger; Overcome the exception that all charged and wiring error of ground wire etc. is brought, system all can effectively recognition detection and control; Solve the circut breaking that do not trip during traditional earth leakage protective device switch control rule, stopped potential safety hazard and improve energy-saving effect, for a long time need not direct closing control switch; Add self-checking function, stop potential fail safe hidden danger.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of the intelligent leakage protector embodiment one that automatically powers on of the present utility model;
Fig. 2 be the intelligent leakage protector embodiment two that automatically powers on of the present utility model circuit theory diagrams;
Fig. 3 be the intelligent leakage protector embodiment three that automatically powers on of the present utility model circuit theory diagrams.
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
As shown in Figure 1, the utility model proposes one automatically to power on intelligent leakage protector, comprise live wire L, zero line N, ground wire E, release, regulator rectifier circuit (rectifier diode D10), amplifying circuit U5, the zero-sequence transformer ZCT1 be connected with amplifying circuit U5 and ground wire E instrument transformer, also comprise optocoupler U1, optocoupler U2, optocoupler U3 and controller IC 1; Pin 2 and the zero line N of described optocoupler U1 are electrically connected, and the pin 1 of optocoupler U1 connects the pin 4 of described optocoupler U2, the A pin of described optocoupler U1 pin 4 connection control device IC1, and the pin 3 of optocoupler U1 connects the pin 2 of optocoupler U2; The B pin of the pin 1 connection control device IC1 of described optocoupler U2, the pin 3 of described optocoupler U2 is gone here and there C2 and ground wire E and is electrically connected; Be provided with voltage-stabiliser tube D9 between the pin 1 of described optocoupler U3 and ground wire E, pin 3 ground connection of described optocoupler U3, the pin 4 of optocoupler U3 connects the C pin of controller; Ground wire E instrument transformer is used for ground wire E current detecting, and its output is connected with controller IC 1; Body of wall line Ee is also provided with in the present embodiment.
The charged indicator light LED1 of ground wire E is also provided with between described zero line N and optocoupler U1, charged for showing ground wire E.
Voltage-stabiliser tube D8 is also provided with between 3 pin of described optocoupler U2 and 4 pin.
Also be provided with voltage-stabiliser tube D9 between described ground wire E and optocoupler U3, between described voltage-stabiliser tube D9 and body of wall line Ee, be also connected with protection diode D2.
Described controller IC 1 is also connected with water flow switch J1, and earth leakage protective device is when coordinating electric hot water to use, and when water flow switch is connected, system forces keeping coil L1 to discharge.
Described release is also provided with keeping coil L1.
This circuit is also provided with controllable silicon Q7 and controllable silicon Q8, and described controllable silicon Q7 is for controlling keeping coil L1; Trigger electrode and the controllable silicon Q8 trigger electrode of described controllable silicon Q7 are all controlled by controller IC 1, and described controllable silicon Q8 is for controlling the break-make of power supply.
Described zero-sequence transformer ZCT1 carries out self-inspection by controller IC 1.
Described controller IC preset value is the magnitude of voltage of a upper cycle pin A.
This circuit is also provided with high-temperature protection circuit and warning device, and wherein high temperature protection comprises thermistor RT1, and detects high-temperature condition by controller; Warning device comprises loud speaker LS1, for sending alarm sound.
Below in conjunction with physical circuit schematic diagram Fig. 1, implementation procedure of the present utility model is described in detail:
1. automatic upper Electricity Functional
Protector plug access 220V input power, controller IC 1 self-inspection completes ICI_I pin and exports high level, through resistance R17, Q7 turn-on power voltage VCC forms loop through L1, R28, Q7, the pre-adhesive of keeping coil, meanwhile, IC1_H pin exports the high level in 1 cycle, through C24, Q8 conducting, supply voltage VCC is through L1, D16, L2, Q8 forms loop, upper electric coil adhesive, keeping coil adhesive, S2, S3 closes, output (Lo, No, Eo) controlled source exports (this process hereinafter referred: controlled source exports);
2. power failure tripping function
The leakage that controlled source exports protects device when meeting mains failure or socket phase shortage or loose contact, IC1 cannot obtain electricity, IC1_I pin is without high level output, 1 all after date Q7 ends, and keeping coil discharges without electricity, drives tripping mechanism to make S2, S3 closing contact disconnects, output (Lo, No, Eo) exports without power supply;
3. water outlet power down function
Be in the leakage guarantor device that controlled source exports, when J1 (external water flow switch) is closed, when IC1_M pin detects low level, controller control IC1_I pin is without high level output, and 1 all after date Q7 ends, and keeping coil discharges without electricity, tripping mechanism is driven to make S2, S3 closing contact disconnects, output (Lo, No, Eo) export without power supply, achieve water outlet power down function, under this functional mode, any operation all can not make electric coil adhesive, output (Lo, No, Eo) be in pressure off-state, guarantee use safety;
4. non-effective earthing intelligence switching control function
Be in the leakage guarantor device that controlled source exports, be attempted by E-N end measure loop parts (E end voltage through C2, D8 voltage-stabiliser tube, U1 optocoupler, the abnormal indicator light of LED1 ground wire, protection diode D1 to N forms loop), optocoupler U1 conducting, IC1_A pin calculates E-N terminal voltage according to current derivation degree and after temporary memory, IC1_B pin exports 0.5S high level, through R16, the conducting of U2 optocoupler, because U2 output is attempted by D8 voltage stabilizing didoe two ends, conducting internal resistance because of U2 reduces the optocoupler U1 conducting degree causing being serially connected in E-N loop and increases, thus cause IC1_A terminal voltage to decline, controller judges after calculating Δ V variable quantity that the magnitude of voltage that E-N holds and E hold ground connection situation. wherein:
When ground wire E holds open circuit: Δ V=0, systematic evaluation to ground wire protected mode is: current mode is protected;
When E-N short circuit: Δ V=0, systematic evaluation to ground wire protected mode is: current mode is protected;
When E-L short circuit: Δ V=0, systematic evaluation to ground wire protected mode is: current mode is protected;
When ground wire E end in contact is bad: Δ V< controller IC preset value, systematic evaluation to ground wire protected mode is: current mode is protected;
When L-N error-polarity connection, be equivalent to E-L=220V, now Δ V>> controller IC preset value, systematic evaluation to ground wire protected mode is: current mode is protected;
When polarity is correct, ground wire effective grounding, E-N holds < controller IC preset value, and now Δ V variable quantity is within the scope of systemic presupposition, and systematic evaluation to ground wire protected mode is: voltage-type is protected;
5. zero-sequence mutual inductance coil self-checking function
Be in the leakage guarantor device that controlled source exports, every 48 hours (install beforehand At All Other Times), IC1_O pin exported the high level in 2 cycles, Q4 conducting, now VCC voltage is through R23, ZCT1 auxiliary winding 3, 4 pin, loop is formed with Q4, ZCT1_1, 2 feels should export, U5_7 pin exports high level, through D12, R26, send into IC1_E pin, if IC1_E pin detects high level, think that zero-sequenceprotection loop is normal, otherwise, IC1_I pin is without high level output, 1 all after date Q7 ends, keeping coil discharges without electricity, tripping mechanism is driven to make S2, S3 closing contact disconnects, output (Lo, No, Eo) export without power supply,
6. failure code prompt facility
Device is protected in the leakage being in controlled source output, and when there is earth leakage protective, IC1_G exports the earth leakage protective instruction that periodic intervals flicker driving LED 3 causes to show the different reason of differentiation, and the different flashing times of its reason is different;
7. leak electricity sound and light of alarm
During any fault, IC1_L pin exports prompt tone control signal and drives Q1 conducting, and LS1 chimes of doom exports;
8. load zero, phase line earth leakage protective
Be in the leakage guarantor device that controlled source exports, when detecting that zero sequence has leakage current, ZCT1_1,2 feels should output signal sends into U5, U5_7 pin exports high level and sends into IC1_E pin, and IC1_I pin pin is without high level output, and 1 all after date Q7 ends, keeping coil discharges without electricity, drive tripping mechanism to make S2, S3 closing contact disconnects, output (Lo, No, Eo) export without power supply;
9. earth wire charged protecting (E end/voltage-type automatically switches into current mode)
Be in the leakage guarantor device that controlled source exports, ground wire E electrified voltage is through C2, D8 voltage stabilizing didoe, U1 (optocoupler), LED1, protection diode D1 and N end forms loop, when E-N end band electric strength reaches preset value, optocoupler U1 conducting causes IC1_A pin level descending system to judge, and whether current E-N end is less than 50V (other value of install beforehand), if then judge IC1_F pin whether >30mA (other value of install beforehand) again, then protect when both all meet, otherwise be in current working mode or self adaptation mode of operation;
10. earth wire charged protecting (E end/current mode automatically switches into voltage-type)
Be in the leakage guarantor device that controlled source exports, the charged electric current of ground wire E through ZCT2 mutual inductor to Eo, mutual inductor induction output voltage arranges C18 filtering through D14, rear feeding IC1_F pin, when IC1_F pin detects that ground wire leakage current then judges whether E-N terminal voltage is greater than 50V when reaching 30mA again, if then IC1_I pin is without high level output, 1 all after date Q7 ends, keeping coil discharges without electricity, tripping mechanism is driven to make S2, S3 closing contact disconnects, output (Lo, No, Eo) export without powering (hereinafter referred to as: protect immediately), otherwise be in voltage mode work or self adaptation mode of operation,
11. automatically lock current mode leaks guarantor's mode of operation
Be in the leakage guarantor device that controlled source exports, when inputting E-N terminal voltage >50V, optocoupler U1 conducting heighten degree, IC1_A pin detects that Δ V variable quantity exceeds the then lock current type work of controller IC preset value;
12. input zero live wires contrary (or L, E short circuit), ground wire is electrization protection simultaneously
If input zero live wire is contrary or input L and E holds direct short circuit or the direct short circuit of N-E, quit work because of U1 optocoupler no-voltage difference under this pattern, systems axiol-ogy utilizes IC1_B pin to export test level, make the raw level change of IC1_A human hair combing waste, if during time unchanged or lower than default Δ V variable quantity, show to there is above-mentioned exception, system automatically switches into current mode protected mode; Simultaneity factor utilizes E-Ee (body of wall) directly voltage difference judgement, when E-Ee terminal voltage >50V (other value predeterminable), E terminal voltage is through C4, voltage-stabiliser tube, U3 optocoupler, protection diode D2 and Ee body of wall form loop, the conducting of U3 optocoupler, IC1_C pin level is caused to change, system utilizes Δ V variable quantity to calculate E-Ee voltage difference, detects protected mode when E-Ee>50V (other value of install beforehand) then switches to ground line current type immediately;
13. ground wire electrification >50V (other threshold values of install beforehand), indicator light flicker instruction
When E-N terminal voltage or E-Ee terminal voltage > preset value, optocoupler U1 or U3 conducting cause IC1_A or IC1_C level to decline and change, system utilizes Δ V variable quantity to calculate E-N or E-Ee voltage difference, when calculating voltage >50V, IC1_G pin output gap shorting voltage driving LED 3 flicker instruction, to cause the abnormal charged warning function of ground wire;
14. protector plug overtemperature protes
Be in the leakage guarantor device that controlled source exports, when overtemperature protection device detects that protector plug temperature reaches preset temperature, deliver to IC1_J pin through R24, RT1, R9 dividing potential drop, if the continuous 10S of system detects the high level of IC1_J pin, hard stop is protected.
It is pointed out that the above-mentioned description to components and parts adopts the mode of writing a Chinese character in simplified form, such as R represents resistance, and C represents electric capacity, by that analogy.
The utility model has following beneficial effect
1. the intelligent leakage protector that automatically powers on is the shortcoming and the potential safety hazard design that overcome existing all earth leakage protective devices, and be the earth leakage protective device of the omnibearing protection type that long-pending all functions are integrated, intelligent and safe is reliable;
2. water outlet power-off, accomplishes water power isolation result of use, does not have use safety hidden danger;
3. overcome the exception that all charged and wiring error of ground wire etc. is brought, system all can effectively recognition detection and control;
4. solve the circut breaking that do not trip during traditional earth leakage protective device switch control rule, stopped potential safety hazard and improve energy-saving effect, for a long time need not direct closing control switch;
5. crucial protective loop adds self-checking function, has stopped potential fail safe hidden danger.
Embodiment two
The present embodiment is substantially identical with mode with embodiment one implementation procedure, and difference is:
Voltage-stabiliser tube D8, D9 of embodiment one replace with triode D8, D9; Controllable silicon Q7, Q8 can use field effect transistor Q8, Q9 to substitute, and make suitable amendment to its peripheral circuit, and do not do too much repeating at this, physical circuit schematic diagram is see Fig. 2.
Embodiment three
The present embodiment is substantially identical with mode with embodiment one implementation procedure, and difference is:
Diode D16 connects with keeping coil L1, and a keeping coil L1 storage capacitor C25 in parallel, for keeping coil L1 provides stable energy, prevents keeping coil L1 from producing noise.Physical circuit schematic diagram is see Fig. 3.
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 (8)
1. the intelligent leakage protector that automatically powers on, comprise live wire, zero line, ground wire, release, regulator rectifier circuit, amplifying circuit, the zero-sequence transformer be connected with amplifying circuit and ground wire instrument transformer, it is characterized in that: also comprise optocoupler U1, optocoupler U2, optocoupler U3 and controller IC 1; Pin 2 and the zero line of described optocoupler U1 are electrically connected, and the pin 1 of optocoupler U1 connects the pin 4 of described optocoupler U2, the A pin of described optocoupler U1 pin 4 connection control device IC1, and the pin 3 of optocoupler U1 connects the pin 2 of optocoupler U2; The B pin of the pin 1 connection control device IC1 of described optocoupler U2, pin 2 and the ground wire of described optocoupler U2 are electrically connected; Be provided with voltage-stabiliser tube D9 between the pin 1 of described optocoupler U3 and ground wire, pin 3 ground connection of described optocoupler U3, the pin 4 of optocoupler U3 connects the C pin of controller; Ground wire instrument transformer is used for ground line current and detects, and its output is connected with controller IC 1.
2. the intelligent leakage protector that automatically powers on according to claim 1, is characterized in that: be also provided with ground wire electrification indicator light LED1 between described zero line and optocoupler U1.
3. the intelligent leakage protector that automatically powers on according to claim 1, is characterized in that: be also provided with voltage-stabiliser tube D8 between 3 pin of described optocoupler U2 and 4 pin.
4. the intelligent leakage protector that automatically powers on according to claim 1, is characterized in that: be also provided with voltage-stabiliser tube D9 between described ground wire and optocoupler U3, is also connected with protection diode D2 between described voltage-stabiliser tube D9 and body of wall line.
5. the intelligent leakage protector that automatically powers on according to claim 1, is characterized in that: described controller IC 1 is also connected with water flow switch J1.
6. the intelligent leakage protector that automatically powers on according to claim 1, is characterized in that: described release is also provided with keeping coil L1.
7. the intelligent leakage protector that automatically powers on according to claim 6, it is characterized in that: this circuit is also provided with controllable silicon Q7 and controllable silicon Q8, described controllable silicon Q7 is for controlling keeping coil L1; Trigger electrode and the controllable silicon Q8 trigger electrode of described controllable silicon Q7 are all controlled by controller IC 1, and described controllable silicon Q8 is for controlling the break-make of power supply.
8. the intelligent leakage protector that automatically powers on according to claim 1, is characterized in that: this circuit is also provided with high-temperature protection circuit and warning device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520316750.XU CN204720957U (en) | 2015-05-15 | 2015-05-15 | Automatically power on intelligent leakage protector |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520316750.XU CN204720957U (en) | 2015-05-15 | 2015-05-15 | Automatically power on intelligent leakage protector |
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| CN204720957U true CN204720957U (en) | 2015-10-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106505518A (en) * | 2016-12-27 | 2017-03-15 | 余姚市嘉荣电子电器有限公司 | A kind of earth leakage protective device |
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2015
- 2015-05-15 CN CN201520316750.XU patent/CN204720957U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106505518A (en) * | 2016-12-27 | 2017-03-15 | 余姚市嘉荣电子电器有限公司 | A kind of earth leakage protective device |
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| CF01 | Termination of patent right due to non-payment of annual fee |