CN206283239U - A kind of earth leakage protective device - Google Patents
A kind of earth leakage protective device Download PDFInfo
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- CN206283239U CN206283239U CN201621449893.9U CN201621449893U CN206283239U CN 206283239 U CN206283239 U CN 206283239U CN 201621449893 U CN201621449893 U CN 201621449893U CN 206283239 U CN206283239 U CN 206283239U
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Abstract
The utility model discloses a kind of earth leakage protective device, it is related to security protection technology field, the earth leakage protective device includes：Controller, automatic power-off control module, perform power-off/upper Electric drive module and contact measure loop；The controller, automatic power-off control module and perform power-off/upper Electric drive module and be sequentially connected, described to perform power-off/go up Electric drive module and be connected with power contact, the contact measure loop is connected with the controller.The utility model detects the break-make situation of power contact by contact measure loop, and the break-make situation is fed back into controller, it is achieved thereby that break-make situation self-inspection, avoid cause once to power off because performing electronic component potential failure or executing agency's abrasion it is unsuccessful caused by potential safety hazard, further increase security.
Description
Technical field
The utility model is related to security protection technology field, more particularly to a kind of earth leakage protective device.
Background technology
Electric heater refers to the water heater heated as the energy using electricity.It is and gas heater, solar water heater
One of three big water heaters mutually arranged side by side, electric heater by more than ten years development, the technology of water heater constantly improves, also increasingly
Favored by consumer.
In order to improve the security performance of electric heater, it is proposed that water outlet power down function, consequently, it is frequently necessary to realize electricity and
Power down function, in the prior art automatic upper electricity with automatically power off control type earth leakage protective device using the control of electronics and mechanical bond
Mode processed, electronic controller is responsible for receiving and assigning instruction effect and mechanism then finally performs tele command and realizes upper electric or power-off
Control.Due to power-off control be realize earth leakage protective and program requirements power-off implementing result, under extreme conditions because performing electricity
Subcomponent potential failure or executing agency's abrasion and cause once to power off unsuccessful, the exception will cause potential safety hazard.
Utility model content
(1) technical problem to be solved
The technical problems to be solved in the utility model is：How to avoid because performing electronic component potential failure or executing agency
Wear and tear and cause once to power off unsuccessful caused potential safety hazard.
(2) technical scheme
In order to solve the above technical problems, the utility model provides a kind of earth leakage protective device, the earth leakage protective device includes：
Controller, automatic power-off control module, perform power-off/upper Electric drive module and contact measure loop；The controller, from dynamic circuit breaker
Electric control module is sequentially connected with power-off/upper Electric drive module is performed, described to perform power-off/upper Electric drive module and power contact
Connection, the contact measure loop is connected with the controller；
The controller, for being sent out to the power-off/upper Electric drive module that performs by the automatic power-off control module
Send cut-offing instruction；
It is described to perform power-off/upper Electric drive module, touched for when the cut-offing instruction is received, disconnecting the power supply
Point；
The contact measure loop, between the live wire and zero line of power supply, the break-make for detecting the power contact
Situation, and the break-make situation of detection is fed back into the controller.
Preferably, the contact measure loop is made up of the first photoelectrical coupler and voltage drop element；
The input of first photoelectrical coupler is located at the live wire and zero of the power supply after being connected with the voltage drop element
Between line, the output end of first photoelectrical coupler is located between the controller and ground.
Preferably, the voltage drop element is electric capacity C, resistance R or RC series circuit.
Preferably, the earth leakage protective device also includes：The automatically upper electric control module being connected with the controller；
The controller, is additionally operable to perform power-off/upper Electric drive module to described by the automatically upper electric control module
Electricity instruction in transmission；
It is described to perform power-off/upper Electric drive module, for when electricity instruction on described is received, closing the power supply and touching
Point.
Preferably, the earth leakage protective device also includes：The water outlet power-off modular being connected with the controller；
The water outlet power-off modular, for obtaining out water state, and by it is described go out water state send to the controller.
Preferably, the water outlet power-off modular includes：Second photoelectrical coupler；
The input of second photoelectrical coupler is connected with water flow sensing unit control loop, second photoelectrical coupler
Output end be located between the controller and ground.
Preferably, the earth leakage protective device also includes：The earth leakage protective control module and zero sequence detection of electrical leakage of interconnection
Module, the earth leakage protective control module and the controller and performs power-off/upper Electric drive module and is connected respectively；
The zero sequence detection of electrical leakage module, for when leaking electricity occurs in the power supply, to the earth leakage protective control module
Send electric leakage signal；
The earth leakage protective control module, for when the electric leakage signal is received, the electric leakage signal being forwarded to
The controller sends cut-offing instruction to the power-off/upper Electric drive module that performs.
Preferably, the earth leakage protective device also includes：Ground line current detection module and ground wire electrified detection module, describedly
Line current detection module is connected with the earth leakage protective control module, the ground wire electrified detection module and the controller phase
Even；
The ground wire electrified detection module, for the voltage difference between the zero line and ground wire that detect the power supply, described
When voltage difference is less than predetermined voltage threshold, the earth leakage protective control module is closed by the controller；
The ground line current detection module, the electric current of the ground wire for detecting the power supply, and the electric current hair that will be detected
Deliver to the earth leakage protective control module；
The earth leakage protective control module, the electric current for being additionally operable to be sent in the ground line current detection module exceedes default electricity
During stream threshold value, send electric leakage signal to the controller or send cut-offing instruction to the power-off/upper Electric drive module that performs.
Preferably, the earth leakage protective device also includes：The high temperature protection module being connected with the controller；
The high temperature protection module, for obtaining high temperature information, and the high temperature information is sent to the controller.
Preferably, the earth leakage protective device also includes：The high-low pressure protection module being connected with the controller；
The high-low pressure protection module, the information of voltage for obtaining supply voltage, and by the information of voltage send to
The controller.
The utility model detects the break-make situation of power contact by contact measure loop, and the break-make situation is fed back
To controller, it is achieved thereby that break-make situation self-inspection, it is to avoid because performing electronic component potential failure or executing agency's abrasion
Cause once to power off unsuccessful caused potential safety hazard, further increase security.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the earth leakage protective device of implementation method of the utility model.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below
Embodiment is used to illustrate the utility model, but is not limited to scope of the present utility model.
Fig. 1 is a kind of structural representation of the earth leakage protective device of implementation method of the utility model.Reference picture 1, the electric leakage
Protector includes：Controller IC 1, automatic power-off control module, perform power-off/upper Electric drive module and contact measure loop；Institute
State controller IC 1, automatic power-off control module and perform power-off/upper Electric drive module and be sequentially connected, it is described to perform power-off/upper electricity
Drive module is connected with power contact, and the contact measure loop is connected with the controller IC 1；
The controller IC 1, for performing power-off/upper Electric drive module to described by the automatic power-off control module
Send cut-offing instruction；
It is described to perform power-off/upper Electric drive module, touched for when the cut-offing instruction is received, disconnecting the power supply
Point；
The contact measure loop, between the live wire and zero line of power supply, the break-make for detecting the power contact
Situation, and the break-make situation of detection is fed back into the controller.
For ease of realizing the detection of break-make situation, in implementing, the contact measure loop is by the first photoelectric coupling
Device U1 and voltage drop element are constituted, and the input of the first photoelectrical coupler U1 is located at the electricity after being connected with the voltage drop element
Between the live wire and zero line in source, the output end of the first photoelectrical coupler U1 is located between the controller IC 1 and ground.
The voltage drop element is electric capacity C, resistance R or RC series circuit, and in the present embodiment, the step-down original paper is gone here and there using RC
Connection circuit (" R " and " C " composition i.e. in respective figure).
The present embodiment detects the break-make situation of power contact by contact measure loop, and the break-make situation is fed back to
Controller, it is achieved thereby that break-make situation self-inspection, it is to avoid because perform electronic component potential failure or executing agency wear and tear make
Into unsuccessful caused potential safety hazard is once powered off, security is further increased.
The earth leakage protective device of the present embodiment can use following operation principle when being powered off：It is in power contact and is powered
State, when performing power-off tripping operation because of a variety of causes, performs power-off/upper Electric drive module and disconnects the power contact, power contact
Disconnected by synchronous full pole, now the input of U1 detection input circuits no-voltage, cause optocoupler to export cut-off, controller IC 1_J pin dimension
High level is held, the permanent High level via controller IC1 inner cores are judged to that power-off is tripped successfully to after；If performing power-off/upper electricity
When drive module disconnects the power contact and power contact is persistently closed, optocoupler U1 input terminal voltages No is through U1, resistance R, electricity
Hold C and Lo and constitute loop, optocoupler conducting, optocoupler turn-on frequency is supply voltage frequency, and the frequency effect causes control in output end
Device IC1_J pin processed synchronously produce energy supply periodic change, and change via controller IC1 is judged to that power-off tripping operation is unsuccessful, can be according to
Program setting exports cut-offing instruction and is sent to through automatic power-off control module and performs power-off/upper electricity from controller IC 1_k pin again
Drive module disconnects the power contact, waited if now power off successfully it is upper it is electric instructs, if unsuccessful again according to program from
Controller IC 1_k pin export cut-offing instruction and are sent to through automatic power-off control module and perform power-off/upper Electric drive module disconnection institute
State power contact, and or perform alert program, there is power-off anomaly to warn earth leakage protective device.
For ease of realizing upper electricity, in the present embodiment, the earth leakage protective device also includes：It is automatic with what the controller was connected
Upper electric control module；
The controller, is additionally operable to perform power-off/upper Electric drive module to described by the automatically upper electric control module
Electricity instruction in transmission；
It is described to perform power-off/upper Electric drive module, for when electricity instruction on described is received, closing the power supply and touching
Point.
The earth leakage protective device of the present embodiment can use following operation principle on carrying out during electricity：It is in power contact and is disconnected
State, when performing upper electricity because of a variety of causes, the upper electricity instruction of controller IC 1_L pin output is sent to through automatic upper electric control module and holds
Row power-off/upper Electric drive module realizes upper Electricity Functional；Electricity is performed and synchronously detect whether load contact is effectively closed in place on this, when
When upper electric unsuccessful (U1 is without lock-out pulse output action in controller IC 1_J pin), on controller IC 1_L is exported again according to program
Electricity instruction, if continue 2 times or program agreement number of times fail when if enter protection alarm mode, to show upper electric unsuccessful alarm.
For ease of realizing that water outlet is powered off, in the present embodiment, the earth leakage protective device also includes：It is connected with the controller
Water outlet power-off modular；
The water outlet power-off modular, for obtaining out water state, and by it is described go out water state send to the controller.
For ease of realizing Phototube Coupling, in the present embodiment, the water outlet power-off modular may include：Second photoelectrical coupler
U2；
The input of the second photoelectrical coupler U2 is connected with water flow sensing unit control circuit, second photoelectric coupling
The output end of device U2 is located between the controller IC 1 and ground.
The earth leakage protective device of the present embodiment is carrying out that when water outlet is powered off following operation principle can be used：When there is water to flow,
Water flow sensing unit control circuit output pulse signal (being water state) acts on controller IC 1_C pin through U2, and the signal is through control
Execution is sent to from controller IC 1_K pin output cut-offing instruction after device IC1 discriminatory analysises processed are effective and through automatic power-off control module
Power-off/upper Electric drive module disconnects the power contact, realizes output power down function；When anhydrous flowing, U2 output cut-offs, control
Device IC1_C pin processed are permanent High level, and upper electronic work is performed and from control according to program after level via controller IC1 analyses effectively
Device IC1_L pin output above electricity instruction, is sent to through automatic upper electric control module and performs power-off/upper Electric drive module closure power supply
Contact；Electricity performs whether synchronous detection load contact is effectively closed in place on this, and (U1 is defeated without lock-out pulse when upper electric unsuccessful
Go out to act on controller IC 1_J pin), controller IC 1_L exports upper electricity instruction according to program again, if continuing 2 times or program agreement
Number of times then enters protection alarm mode when failing, unsuccessful to show upper electricity.
For ease of realizing zero sequence earth leakage protective, in the present embodiment, the earth leakage protective device also includes：The electric leakage of interconnection
Protection control module and zero sequence detection of electrical leakage module, the earth leakage protective control module and the controller and perform power-off/on
Electric drive module is connected respectively；
The zero sequence detection of electrical leakage module, for when leaking electricity occurs in the power supply, to the earth leakage protective control module
Send electric leakage signal；
The earth leakage protective control module, for when the electric leakage signal is received, the electric leakage signal being forwarded to
The controller sends cut-offing instruction to the power-off/upper Electric drive module that performs.
The earth leakage protective device of the present embodiment can use following operation principle when zero sequence earth leakage protective is carried out：In power contact
In "on" position, load outputs Lo or No over the ground or Eo produce electric leakage by zero sequence detection of electrical leakage Coil Detector to and reach pre-
If during scope, earth leakage protective control module IC2 exports high level and is touched to power-off/upper Electric drive module disconnection power supply is performed
Point, at the same time, IC2 electric leakage signals are synchronously sent to controller IC 1_H pin and realize communication, when power-off tripping operation first is unsuccessful,
Cut-offing instruction being exported from controller IC 1_k pin and being sent to through automatic power-off control module perform power-off/upper Electric drive module again
The power contact is disconnected, enters electric leakage self-locking program (must manually go up electricity) if now powering off successfully, if unsuccessful again
Power-down procedure or alert program then are performed according to program, there is power-off anomaly to warn earth leakage protective device；(control during earth leakage protective
Device IC1_H pin processed detect permanent High level), controller IC 1 is believed according to agreement procedure from controller IC 1_F pin output specified pulse width
Number turn on Q1, control of realizing to IC2 protection chips reset is again introduced into earth leakage protective detection state with this.
For ease of realizing ground wire exception electrization protection, in the present embodiment, the earth leakage protective device also includes：Ground line current is examined
Module and ground wire electrified detection module are surveyed, the ground line current detection module is connected with the earth leakage protective control module, described
Ground wire electrified detection module is connected with the controller；
The ground wire electrified detection module, for the voltage difference between the zero line and ground wire that detect the power supply, described
When voltage difference is less than predetermined voltage threshold, the earth leakage protective control module is closed by the controller；
The ground line current detection module, the electric current of the ground wire for detecting the power supply, and the electric current hair that will be detected
Deliver to the earth leakage protective control module；
The earth leakage protective control module, the electric current for being additionally operable to be sent in the ground line current detection module exceedes default electricity
During stream threshold value, send electric leakage signal to the controller or send cut-offing instruction to the power-off/upper Electric drive module that performs.
The earth leakage protective device of the present embodiment can use following operation principle when ground wire exception electrization protection is carried out：In power supply
Contact is in "on" position, and the terminal voltage between power input Ni and Ei is less than systemic presupposition value (such as：When 36V), ground wire electrification
Detection module exports high level to controller IC 1_D pin, and now controller IC 1_G pin output high level turns on Q2, Q2 conductings
Positive closing IC2 ground line currents are detected into function, it is to avoid ground line current is made beyond preset value during low-pressure state between Ni and Ei
Into ground line current abnormal protection；When the terminal voltage between Ni and Ei is more than systemic presupposition value (such as：>36V), now ground wire electrification
Detection module exports low level to controller IC 1_D pin, and now controller IC 1_G pin output low level ends Q2, Q2 cut-offs
IC2 ground line current detections function is caused to be opened, if now ground line current detection coil detects electric current and meets protection, electric leakage
Protection control module IC2 exports high level and disconnects the power contact, at the same time, IC2 to power-off/upper Electric drive module is performed
Electric leakage signal is synchronously sent to controller IC 1_H pin and realizes communication, when first disconnecting the power contact and being unsuccessful, again from control
Device IC1_k pin processed export cut-offing instruction and are sent to through automatic power-off control module and perform power-off/upper Electric drive module realization power-off
Action, self-locking program (must manually go up electricity) of leaking electricity is entered if now power off successfully, according to program execution if unsuccessful again
, there is power-off anomaly to warn earth leakage protective device in power-down procedure or alert program；(controller IC 1_H pin during earth leakage protective
Detect permanent High level), controller IC 1 turns on Q1 according to agreement procedure from controller IC 1_F pin output specified pulse width signal,
Realize that IC2 protection chips reset to control to be again introduced into earth leakage protective detection state with this.
For ease of realizing high temperature protection, in the present embodiment, the earth leakage protective device also includes：It is connected with the controller
High temperature protection module；
The high temperature protection module, for obtaining high temperature information, and the high temperature information is sent to the controller.
The earth leakage protective device of the present embodiment can use following operation principle when high temperature protection is carried out：It is in power contact
"on" position, when temperature reaches systemic presupposition value, high temperature protection module exports high level (i.e. high temperature information) and acts on control
Device IC1_A pin, controller IC 1_k pin export cut-offing instruction and are sent to through automatic power-off control module and perform power-off/upper electric drive
Module disconnects the power contact, realizes output power down function；When temperature is less than systemic presupposition value, controller IC1_A pin are ground
Level, refers to according to the upper electronic work of program execution after level via controller IC1 analyses effectively and from the upper electricity of controller IC 1_L pin output
Order, is sent to through automatic upper electric control module and performs power-off/upper upper Electricity Functional of Electric drive module realization.Certainly, high temperature protection function
It is likewise supplied with the secondary of automatic upper electricity/automatically power off and above control defencive function.
For ease of realizing that high-low pressure is protected, in the present embodiment, the earth leakage protective device also includes：It is connected with the controller
High-low pressure protection module；
The high-low pressure protection module, the information of voltage for obtaining supply voltage, and by the information of voltage send to
The controller.
The earth leakage protective device of the present embodiment can use following operation principle when high temperature protection is carried out：It is in power contact
"on" position, when supply voltage is below or above rated voltage bound, high-low pressure protection module output voltage information function
Controller IC 1_B pin linear changes, voltage via controller IC1 analyses are performed after judging according to program, when below or above specified
When voltage is limited, controller IC 1_k pin export cut-offing instruction and are sent to through automatic power-off control module and perform power-off/upper electric drive
Module disconnects the power contact, realizes output power down function；When controller IC 1_B pin voltages are returned in the range of bound
When, controller IC 1_L pin output above electricity instruction is sent to through automatic upper electric control module and performs power-off/upper Electric drive module realization
Upper Electricity Functional.Certainly, high-low pressure protection is likewise supplied with the secondary of automatic upper electricity/automatically power off and above control defencive function.
Embodiment of above is merely to illustrate the utility model, and is not limitation of the utility model, relevant technology neck
The those of ordinary skill in domain, in the case where spirit and scope of the present utility model are not departed from, can also make a variety of changes and
Modification, therefore all equivalent technical schemes fall within category of the present utility model, scope of patent protection of the present utility model should
It is defined by the claims.
Claims (10)
1. a kind of earth leakage protective device, it is characterised in that the earth leakage protective device includes：Controller, automatic power-off control module, hold
Row power-off/upper Electric drive module and contact measure loop；The controller, automatic power-off control module and perform power-off/upper electricity
Drive module is sequentially connected, and the power-off/upper Electric drive module that performs is connected with power contact, the contact measure loop and institute
State controller connection；
The controller, for sending disconnected to the power-off/upper Electric drive module that performs by the automatic power-off control module
Electricity instruction；
It is described to perform power-off/upper Electric drive module, for when the cut-offing instruction is received, disconnecting the power contact；
The contact measure loop, between the live wire and zero line of power supply, the break-make situation for detecting the power contact,
And the break-make situation of detection is fed back into the controller.
2. earth leakage protective device as claimed in claim 1, it is characterised in that the contact measure loop is by the first photoelectrical coupler
Constituted with voltage drop element；
The input of first photoelectrical coupler connected with the voltage drop element after located at the power supply live wire and zero line it
Between, the output end of first photoelectrical coupler is located between the controller and ground.
3. earth leakage protective device as claimed in claim 2, it is characterised in that the voltage drop element is that electric capacity C, resistance R or RC go here and there
Connection circuit.
4. the earth leakage protective device as any one of claims 1 to 3, it is characterised in that the earth leakage protective device also includes：
The automatically upper electric control module being connected with the controller；
The controller, is additionally operable to be sent to the power-off/upper Electric drive module that performs by the automatically upper electric control module
Upper electricity instruction；
It is described to perform power-off/upper Electric drive module, for when electricity instruction on described is received, closing the power contact.
5. the earth leakage protective device as any one of claims 1 to 3, it is characterised in that the earth leakage protective device also includes：
The water outlet power-off modular being connected with the controller；
The water outlet power-off modular, for obtaining out water state, and by it is described go out water state send to the controller.
6. earth leakage protective device as claimed in claim 5, it is characterised in that the water outlet power-off modular includes：Second smooth thermocouple
Clutch；
The input of second photoelectrical coupler is connected with water flow sensing unit control loop, second photoelectrical coupler it is defeated
Go out end to be located between the controller and ground.
7. the earth leakage protective device as any one of claims 1 to 3, it is characterised in that the earth leakage protective device also includes：
The earth leakage protective control module and zero sequence detection of electrical leakage module of interconnection, the earth leakage protective control module and the controller
And perform power-off/upper Electric drive module and connect respectively；
The zero sequence detection of electrical leakage module, for when leaking electricity occurs in the power supply, being sent to the earth leakage protective control module
Electric leakage signal；
The earth leakage protective control module, for when the electric leakage signal is received, the electric leakage signal being forwarded to described
Controller sends cut-offing instruction to the power-off/upper Electric drive module that performs.
8. earth leakage protective device as claimed in claim 7, it is characterised in that the earth leakage protective device also includes：Ground line current is examined
Module and ground wire electrified detection module are surveyed, the ground line current detection module is connected with the earth leakage protective control module, described
Ground wire electrified detection module is connected with the controller；
The ground wire electrified detection module, for the voltage difference between the zero line and ground wire that detect the power supply, in the voltage
When difference is less than predetermined voltage threshold, the earth leakage protective control module is closed by the controller；
The ground line current detection module, the electric current of the ground wire for detecting the power supply, and the electric current that will be detected send to
The earth leakage protective control module；
The earth leakage protective control module, the electric current for being additionally operable to be sent in the ground line current detection module exceedes predetermined current threshold
During value, send electric leakage signal to the controller or send cut-offing instruction to the power-off/upper Electric drive module that performs.
9. the earth leakage protective device as any one of claims 1 to 3, it is characterised in that the earth leakage protective device also includes：
The high temperature protection module being connected with the controller；
The high temperature protection module, for obtaining high temperature information, and the high temperature information is sent to the controller.
10. the earth leakage protective device as any one of claims 1 to 3, it is characterised in that the earth leakage protective device is also wrapped
Include：The high-low pressure protection module being connected with the controller；
The high-low pressure protection module, the information of voltage for obtaining supply voltage, and the information of voltage is sent to described
Controller.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621449893.9U CN206283239U (en) | 2016-12-27 | 2016-12-27 | A kind of earth leakage protective device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621449893.9U CN206283239U (en) | 2016-12-27 | 2016-12-27 | A kind of earth leakage protective device |
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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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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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