CN220305474U - Leakage inductance circuit and leakage inductance device - Google Patents
Leakage inductance circuit and leakage inductance device Download PDFInfo
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- CN220305474U CN220305474U CN202320866488.0U CN202320866488U CN220305474U CN 220305474 U CN220305474 U CN 220305474U CN 202320866488 U CN202320866488 U CN 202320866488U CN 220305474 U CN220305474 U CN 220305474U
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- 230000006698 induction Effects 0.000 claims abstract description 25
- 238000009434 installation Methods 0.000 claims abstract description 15
- 230000000149 penetrating effect Effects 0.000 claims abstract description 3
- 239000003990 capacitor Substances 0.000 claims description 11
- 230000000007 visual effect Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 8
- 230000001012 protector Effects 0.000 description 7
- 230000008859 change Effects 0.000 description 5
- 230000005674 electromagnetic induction Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 230000004075 alteration Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of leakage protection, in particular to a leakage induction circuit and a leakage induction device. The leakage induction device comprises an induction box, the induction box is provided with a threading hole in a penetrating mode, an installation cavity is formed in the induction box, a control circuit board is arranged in the installation cavity, a leakage induction circuit is arranged on the control circuit board, and an electromagnetic inductor is located in the installation cavity and sleeved on the periphery of the threading hole. The utility model solves the technical problem that the user cannot find the leakage current at 10 to 30 milliampere hours in the prior art, can send out an alarm in time under the condition of 10 to 30 milliampere hours of leakage, plays a role in early warning in time, and improves the safety and the protection reliability of the user.
Description
Technical Field
The utility model relates to the technical field of leakage protection, in particular to a leakage inductance circuit and a leakage inductance device.
Background
The leakage protector can enable the circuit to be disconnected, so that personal safety is guaranteed. Existing circuit breakers including earth leakage protectors are generally classified into 2P, 3P, 4P, etc. Wherein P refers to the number of the connected wires, 2P refers to the power supply end connected with two wires to the leakage protector, and the two wires are connected through the leakage protector; 3P means that the number of wires connected to the leakage protector is three; 4P means that the number of wires to be connected to the earth leakage protector is four.
However, in the process of implementing the technical scheme of the utility model in the embodiment of the application, the inventor of the application finds that at least the following technical problems exist in the above technology:
the current leakage protector normally reaches 30 milliamperes to trip, the human body can bear a critical value (a recognized value) that the current is not injured at 10 milliamperes, when the current of the leakage is 10 to 30 milliamperes, the user cannot find the current, and the current is an electric current which is injured to the human body between 10 and 30 milliamperes; however, if the leakage switch is set with a current threshold value of 10 milliamperes, the tripping action can cause frequent tripping and power failure in actual use to affect actual life and production.
Disclosure of Invention
According to the leakage induction circuit and the leakage induction device, the technical problem that a user cannot find the current of leakage in the prior art at 10-30 milliampere time is solved, the alarm can be timely sent out under the condition that the current of leakage is 10-30 milliampere, the effect of timely early warning is achieved, and the safety and the protection reliability of a user are improved.
The embodiment of the application provides a leakage inductance induction circuit, it includes electromagnetic inductor, attention device, electronic switch and control circuit, and electromagnetic inductor is used for the cover to establish in the periphery of main line, electromagnetic inductor is used for whether electric wire is leaked, attention device with electronic switch connects, electromagnetic inductor attention device with electronic switch is connected with control circuit respectively.
Preferably, the electromagnetic inductor is a non-contact electromagnetic inductor.
The control circuit comprises a triode Q1, and the electromagnetic inductor is connected with the electronic switch through the triode Q1.
The control circuit further comprises a resistor R1, a resistor R2, a resistor R3, an electron R8, a capacitor C1, a diode D2 and a diode D5, wherein one end of the resistor R8 is connected with the anode of the diode D5, the other end of the resistor R8 is connected with the input end of the electromagnetic inductor, the output end of the electromagnetic inductor is connected with one end of the resistor R1, the other end of the resistor R1 is connected with the anode of the diode D2, the cathode of the diode D2 is respectively connected with one end of the resistor R2 and one end of the capacitor C1, the other end of the resistor R2 is connected with the base of the triode Q1, the other end of the capacitor C1 and the emitter of the triode Q1 are respectively connected with the anode of the diode D1, the cathode of the diode D1 is connected with the electronic switch, the cathode of the diode D5 is connected with one end of the resistor R3, and the other end of the resistor R3 is connected with the collector of the triode Q1.
The control circuit further comprises a zener diode D3, and two ends of the zener diode D3 are respectively connected with the emitter and the collector of the triode Q1.
Preferably, the warning device is a buzzer.
Preferably, the alarm is an audible and visual alarm.
The utility model also provides a leakage inductance device, which comprises an induction box, wherein the induction box is provided with a threading hole in a penetrating way, an installation cavity is arranged in the induction box, a control circuit board is arranged in the installation cavity, the control circuit board is provided with the leakage inductance circuit, the electromagnetic inductor is positioned in the installation cavity and sleeved on the periphery of the threading hole, and the alarm is arranged in the installation cavity or on the outer wall of the induction box.
One or more technical solutions provided in the embodiments of the present application at least have the following technical effects or advantages:
because the leakage inductance circuit and the leakage inductance device are adopted, the utility model is connected in parallel on the main line, the normal use of other equipment on the main line is not influenced, the electromagnetic sensor is sleeved on the ground wire or the zero fire wire of the main line, and the electromagnetic change of the ground wire or the zero fire wire can be measured more sensitively by utilizing the electromagnetic induction principle, so that the leakage condition of 10 to 30 milliamperes can be measured, the user is reminded by the warning device, the technical problem that the user cannot find the leakage current in the prior art at 10 to 30 milliamperes is effectively solved, the warning can be timely given out under the condition of 10 to 30 milliamperes of leakage, the effect of timely early warning is achieved, and the safety and the protection reliability of the user are improved.
Drawings
Fig. 1 is a circuit diagram of a leakage inductance circuit according to a first embodiment of the present application.
100. An electromagnetic inductor; 200. an alarm; 300. an electronic switch.
Detailed Description
According to the leakage induction circuit and the leakage induction device, electromagnetic change of a ground wire or a zero-live wire can be measured more sensitively by utilizing an electromagnetic induction principle, so that the leakage condition of 10 to 30 milliamperes can be measured, a user is reminded through an alarm, the technical problem in the prior art is effectively solved, and then an alarm can be timely sent out under the condition of 10 to 30 milliamperes of leakage, so that the effect of timely early warning is achieved, and the safety and the protection reliability of the user are improved.
In order to better understand the above technical solution, the following detailed description will refer to fig. 1 of the specification and a specific embodiment.
Example 1
The leakage inductance circuit comprises an electromagnetic inductor 100, an alarm 200, an electronic switch 300 and a control circuit, wherein the electromagnetic inductor 100 is used for being sleeved on the periphery of a main line, the electromagnetic inductor 100 is used for judging whether an electric wire leaks electricity, the alarm 200 is connected with the electronic switch 300, and the electromagnetic inductor 100, the alarm 200 and the electronic switch 300 are respectively connected with the control circuit. Preferably, the electromagnetic sensor 100 is a non-contact electromagnetic sensor 100. Specifically, under the above-mentioned setting, electromagnetic induction ware 100 need not to connect with the electric wire, can more sensitively survey the electromagnetism change of ground wire or zero live wire through non-contact electromagnetic induction ware 100, can survey the electric leakage condition at 10 to 30 milliamperes, when the electric leakage condition takes place, signal transmission to control circuit to start alarm 200 through control circuit, send the alarm through alarm 200 and inform the user, play the effect of timely early warning, improve user's security and fail safe nature.
In the first embodiment, the control circuit includes a transistor Q1, and the electromagnetic sensor 100 is connected to the electronic switch 300 through the transistor Q1. The control circuit further comprises a resistor R1, a resistor R2, a resistor R3, an electron R8, a capacitor C1, a diode D2 and a diode D5, wherein one end of the resistor R8 is connected with the anode of the diode D5, the other end of the resistor R8 is connected with the input end of the electromagnetic sensor 100, the output end of the electromagnetic sensor 100 is connected with one end of the resistor R1, the other end of the resistor R1 is connected with the anode of the diode D2, the cathode of the diode D2 is respectively connected with one end of the resistor R2 and one end of the capacitor C1, the other end of the resistor R2 is connected with the base of the triode Q1, the other end of the capacitor C1 and the emitter of the triode Q1 are respectively connected with the anode of the diode D1, the cathode of the diode D1 is connected with the electronic switch 300, the cathode of the diode D5 is connected with one end of the resistor R3, and the other end of the resistor R3 is connected with the collector of the triode Q1. The control circuit further comprises a zener diode D3, and two ends of the zener diode D3 are respectively connected with the emitter and the collector of the triode Q1. Specifically, in this setting, the effect of stabilizing the voltage is achieved.
Specifically, in the above arrangement, the power supply charges the capacitor C1 through the resistor R8, the electromagnetic inductor 100, and the resistor R1, and at this time, the power supply forms a direct current through half-wave rectification of the diode D5, and provides a voltage to the collector of the triode Q1 through the resistor R3 and the zener diode D3; when the voltage starts to increase until the voltage at two ends of the capacitor C1 exceeds the be voltage of the triode Q1, the triode Q1 is conducted, the electronic switch 300 is opened through the mutual inductance of the electromagnetic inductor 100, and the alarm 200 is started; when the be voltage of the transistor Q1 is continuously reduced until the transistor Q1 is turned off, no current passes through the electromagnetic sensor 100, and at this time, the electronic switch 300 is turned off, and the alarm 200 is turned off.
In the first embodiment, the alarm 200 is a buzzer or an audible and visual alarm.
Of course, the alarm 200 may include a wireless communication module for realizing signal interconnection with a mobile phone or other intelligent terminals, and sending an alarm to prompt the user through the mobile phone or the intelligent terminals.
Example two
In second embodiment of the application, a leakage inductance device is provided, which comprises an induction box, the induction box runs through and is provided with the through wires hole, be provided with the installation cavity in the induction box, be provided with control circuit board in the installation cavity, the control circuit board on be provided with leakage induction circuit, electromagnetic inductor 100 is located the installation cavity just overlaps and establishes the periphery of through wires hole, alarm 200 is installed in the installation cavity or the outer wall of induction box. The electromagnetic sensor 100 is a non-contact electromagnetic sensor 100.
The technical scheme in the embodiment of the application at least has the following technical effects or advantages:
specifically, in the above arrangement, the electromagnetic inductor 100 does not need to be in contact with the main line, and the electromagnetic inductor 100 is mainly used to receive the magnetic field change outside the main line; when the electric leakage detection device is used, the ground wire or the zero-live wire of the main wire passes through the threading hole, the electromagnetic sensor 100 is used for detecting, when the electric leakage occurs, the electromagnetic change of the ground wire or the zero-live wire can be measured more sensitively through the non-contact electromagnetic sensor 100, the electric leakage condition of 10 to 30 milliamperes can be measured, when the electric leakage occurs, a signal is sent to the control circuit, the warning device 200 is started through the control circuit, the warning device 200 is used for sending out an alarm to inform a user, the effect of timely early warning is achieved, and the safety and the protection reliability of the user are improved.
While preferred embodiments of the present utility model have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the utility model.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (8)
1. A leakage inductance circuit, characterized by: the electric wire leakage detection device comprises an electromagnetic inductor, a warning device, an electronic switch and a control circuit, wherein the electromagnetic inductor is used for being sleeved on the periphery of a main wire, the electromagnetic inductor is used for detecting whether an electric wire leaks electricity or not, the warning device is connected with the electronic switch, and the electromagnetic inductor, the warning device and the electronic switch are respectively connected with the control circuit.
2. A leakage inductance circuit according to claim 1, wherein: the electromagnetic inductor is a non-contact electromagnetic inductor.
3. A leakage inductance circuit according to claim 1, wherein: the control circuit comprises a triode Q1, and the electromagnetic inductor is connected with the electronic switch through the triode Q1.
4. A leakage inductance circuit according to claim 3, wherein: the control circuit further comprises a resistor R1, a resistor R2, a resistor R3, an electron R8, a capacitor C1, a diode D2 and a diode D5, wherein one end of the resistor R8 is connected with the anode of the diode D5, the other end of the resistor R8 is connected with the input end of the electromagnetic inductor, the output end of the electromagnetic inductor is connected with one end of the resistor R1, the other end of the resistor R1 is connected with the anode of the diode D2, the cathode of the diode D2 is respectively connected with one end of the resistor R2 and one end of the capacitor C1, the other end of the resistor R2 is connected with the base of the triode Q1, the other end of the capacitor C1 and the emitter of the triode Q1 are respectively connected with the anode of the diode D1, the cathode of the diode D1 is connected with the electronic switch, the cathode of the diode D5 is connected with one end of the resistor R3, and the other end of the resistor R3 is connected with the collector of the triode Q1.
5. A leakage inductance circuit according to claim 3, wherein: the control circuit further comprises a zener diode D3, and two ends of the zener diode D3 are respectively connected with the emitter and the collector of the triode Q1.
6. A leakage inductance circuit according to claim 1, wherein: the warning device is a buzzer.
7. A leakage inductance circuit according to claim 1, wherein: the alarm is an audible and visual alarm.
8. A leakage inductance device, characterized by: the induction box is provided with a threading hole in a penetrating mode, an installation cavity is formed in the induction box, a control circuit board is arranged in the installation cavity, the leakage induction circuit of any one of claims 1-7 is arranged on the control circuit board, the electromagnetic inductor is located in the installation cavity and sleeved on the periphery of the threading hole, and the alarm is arranged in the installation cavity or on the outer wall of the induction box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320866488.0U CN220305474U (en) | 2023-04-17 | 2023-04-17 | Leakage inductance circuit and leakage inductance device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320866488.0U CN220305474U (en) | 2023-04-17 | 2023-04-17 | Leakage inductance circuit and leakage inductance device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220305474U true CN220305474U (en) | 2024-01-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320866488.0U Active CN220305474U (en) | 2023-04-17 | 2023-04-17 | Leakage inductance circuit and leakage inductance device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220305474U (en) |
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2023
- 2023-04-17 CN CN202320866488.0U patent/CN220305474U/en active Active
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