Leakage metal detection circuit device

Abstract

The utility model relates to the technical field of electric leakage detection, in particular to an electric leakage metal detection circuit device which comprises a detection wire and a detection device, and the detection wire comprises a metal detection wire, an additional signal wire, a metal outer layer, an insulation protection layer and a plurality of core wires. The additional signal line, the metal detection line and the core wire are all wrapped by the metal outer layer, and the insulation protection layer is wrapped on the periphery of the metal outer layer; the metal detection line and the additional signal line are additionally used, the S1 induction end and the S2 induction end are connected through the metal detection line and the additional signal line, when the metal detection line is broken, connection between the S1 induction end and the S2 induction end is disconnected, and the detection device can detect the breakage in time, so that the risk of electric leakage can be detected in time; and a worker can timely maintain, so that the occurrence of risk accidents is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of leakage detection, in particular to a leakage metal detection circuit device. Background Art

[0002] Cables are important connectors for signal transmission or power supply. During long-term use, they are inevitably damaged, cracked, or broken. However, since the cable is provided with an insulating protective layer on the outside, it is not easy to detect damage to the cable's internal structure, resulting in the failure to repair the cable in time, which can easily cause damage to electrical facilities. In the prior art, the durability of the cable's core wire is generally enhanced to extend the overall service life of the cable, such as by using braided wires, but there are still risks of disconnection and leakage, such as damage by small animals such as mice. If it cannot be detected in time, there is still a risk of electricity use. Summary of the invention

[0003] In view of the problems of the prior art, the utility model provides a leakage metal detection circuit device, which adds a metal detection line and an additional signal line, and connects an S1 sensing end and an S2 sensing end through the metal detection line and the additional signal line. When the metal detection line breaks, the connection between the S1 sensing end and the S2 sensing end is disconnected, and the detection device can detect it in time, thereby being able to detect the risk of leakage in time.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions: a leakage metal detection circuit device, comprising a detection wire and a detection device, wherein the detection wire comprises a metal detection wire, an additional signal wire, a metal outer layer, an insulating protective layer and a plurality of core wires, wherein the additional signal wire, the metal detection wire and the core wire are all wrapped by the metal outer layer, and the insulating protective layer is wrapped around the outer periphery of the metal outer layer;

[0005] The detection device is provided with an S1 sensing end and an S2 sensing end, one end of the metal detection line is connected to one end of the additional signal line, the other end of the metal detection line is connected to the S1 sensing end, and the other end of the additional signal line is connected to the S2 sensing end. The detection device is used to detect whether the electrical connection between the S1 sensing end and the S2 sensing end is disconnected.

[0006] Preferably, the core wire includes a first conductor group and a first insulating layer wrapped around the outer circumference of the first conductor group.

[0007] Preferably, the metal detection wire is a bare copper wire.

[0008] Preferably, the additional signal line includes a second conductor group and a third insulating layer wrapped around the outer periphery of the second conductor group.

[0009] Preferably, the metal outer layer is an aluminum foil layer.

[0010] Preferably, the core wire further includes a second insulating layer wrapped around the outer periphery of the first insulating layer.

[0011] Preferably, the detection device comprises an input terminal L, an input terminal N, an output terminal LO, an output terminal NO, a main switch S1, a drive module, a switch module and a circuit breaker X1, and the drive module is provided with the S1 sensing terminal and the S2 sensing terminal;

[0012] The input terminal L is connected to the output terminal LO through the main switch S1, and the input terminal N is connected to the output terminal NO through the main switch S1;

[0013] The input end of the driving module is connected to the output terminal LO, and the output end of the driving module is connected to the control end of the switch module. The driving module is used to control the on and off of the switch module according to the signal of whether the S1 sensing end and the S2 sensing end are connected; the input end of the switch module is connected to the output terminal LO, the output end of the switch module is connected to a voltage end of the circuit breaker X1, the other voltage end of the circuit breaker X1 is connected to the output terminal NO, and the control end of the circuit breaker X1 is connected to the control end of the main switch S1 and is used to control the on and off of the main switch S1.

[0014] Preferably, the input terminal N is connected to the rectifier D1 through the main switch S1, and the switch module includes a diode Q1 and a diode Q2, the anode of the diode Q1 is connected to the output of the rectifier D1, the cathode of the diode Q1 is grounded, the control end of the diode Q1 is connected to the output end of the driving module, the anode of the diode Q2 is connected to the output of the rectifier D1, the cathode of the diode Q2 is grounded, and the control end of the diode Q2 is connected to the output end of the driving module.

[0015] Preferably, the driving module includes resistors R5, R18, R4 and R17; the output of the rectifier D1 is connected to the control end of the diode Q1 after passing through resistors R18 and R5 in sequence; the end of resistor R18 connected to resistor R5 is connected to the sensing end of S1; the control end of the diode Q2 is grounded after passing through resistors R4 and R17 in sequence; the connection end of resistors R4 and R17 is connected to the sensing end of S2.

[0016] Beneficial effects of the utility model:

[0017] The utility model provides a leakage metal detection circuit device, which connects an S1 sensing end and an S2 sensing end through the additional use of a metal detection line and an additional signal line. When the metal detection line is broken, the connection between the S1 sensing end and the S2 sensing end is disconnected, and the detection device can detect it in time, thereby being able to detect the risk of leakage in time, so that the staff can perform maintenance in time to reduce the occurrence of risk accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an exploded schematic diagram of the utility model;

[0019] Figure 2 It is a cross-sectional view of the utility model;

[0020] Figure 3 It is a cross-sectional view of the core wire of the utility model;

[0021] Figure 4 It is a signal block diagram of the detection device of the utility model;

[0022] Figure 5 This is a circuit schematic diagram of the detection device of the utility model.

[0023] exist Figures 1 to 5 Reference numerals in the drawings include:

[0024] 1-metal detection line, 2-additional signal line, 3-metal outer layer, 4-insulating protection layer, 5-first conductor group, 6-first insulating layer, 7-second insulating layer, 8-second conductor group, 9-third insulating layer, 10-driving module, 11-switch module. DETAILED DESCRIPTION

[0025] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with the embodiments and drawings, and the contents mentioned in the implementation modes are not intended to limit the present invention. The present invention is described in detail below in conjunction with the drawings.

[0026] This embodiment provides a leakage metal detection line 1 device, such as Figures 1 to 5, including a detection wire and a detection device, the detection wire includes a metal detection wire 1, an additional signal wire 2, a metal outer layer 3, an insulating protective layer 4 and a plurality of core wires, the additional signal wire 2, the metal detection wire 1 and the core wire are all wrapped by the metal outer layer 3, and the insulating protective layer 4 is wrapped around the outer periphery of the metal outer layer 3; the detection device is provided with an S1 sensing end and an S2 sensing end, one end of the metal detection wire 1 is connected to one end of the additional signal wire 2, the other end of the metal detection wire 1 is connected to the S1 sensing end, and the other end of the additional signal wire 2 is connected to the S2 sensing end, and the detection device is used to detect whether the electrical connection between the S1 sensing end and the S2 sensing end is disconnected.

[0027] Specifically, this embodiment adds a metal detection line 1 and an additional signal line 2 to a commonly used cable, wherein the metal detection line 1 is preferably a bare copper wire, and the additional signal line 2 preferably includes a second conductor group 8 and a third insulating layer 9 wrapped around the outer periphery of the second conductor group 8. Since the metal detection line 1 and the additional signal line 2 are not used to transmit current and voltage signals but to perform detection functions, the diameters of the metal detection line 1 and the additional signal line 2 are preferably smaller than core wires such as the live wire and the neutral wire. Therefore, during long-term use, if the metal detection line 1 or the additional signal line 2 is broken due to bending, resulting in a disconnection between the metal detection line 1 and the additional signal line 2, the electrical connection between the S1 sensing end and the S2 sensing end is also disconnected, and a signal is given to the detection device. The detection device can process the signal of the broken line, so that the staff can understand that there is a problem with the cable, and then carry out maintenance inspections to avoid usage accidents. In this embodiment, the metal detection line 1 and the additional signal line 2 are used as early warning signals. The metal detection line 1 is used for the main detection function, and the additional signal line 2 transmits the disconnection signal to the S2 sensing end. When the signal of the metal detection line 1 is disconnected due to breakage or other problems, it means that the core wire of this embodiment may also have problems. Therefore, it is necessary to notify the staff to carry out maintenance in time to avoid safety problems as soon as possible.

[0028] Further, such as Figure 1 and Figure 2 The present embodiment further provides a metal outer layer 3, which preferably uses an aluminum foil layer to wrap the metal detection wire 1, the additional signal wire 2 and several core wires, which has the function of shielding impurity signals and can also protect the internal structure together with the insulating protective layer 4.

[0029] Furthermore, in order to improve the durability of the core wire, the core wire includes a first conductor group 5 and a first insulating layer 6 wrapped around the outer periphery of the first conductor group 5, and further includes a second insulating layer 7, such as Figure 3 As shown, the first conductor group 5 is protected by the first insulating layer 6 and the second insulating layer 7 to reduce the risk of leakage.

[0030] like Figure 4 and5 As shown, it is a specific circuit schematic diagram of the detection device of this embodiment, including input terminal L, input terminal N, output terminal LO and output terminal NO, and also including main switch S1, driving module 10, switch module 11 and circuit breaker X1, driving module 10 is provided with S1 sensing end and S2 sensing end, S1 sensing end and S2 sensing end realize signal connection through metal detection line 1 and additional signal line 2; input terminal L is connected with output terminal LO through main switch S1, input terminal N is connected with output terminal NO through main switch S1; driving module 10 is provided with S1 sensing end and S2 sensing end, and S1 sensing end and S2 sensing end realize signal connection through metal detection line 1 and additional signal line 2; input terminal L is connected with output terminal LO through main switch S1, and input terminal N is connected with output terminal NO through main switch S1; The input end of the driving module 10 is connected to the output terminal LO, the output end of the driving module 10 is connected to the control end of the switch module 11, and the driving module 10 is used to control the on and off of the switch module 11 according to the signal of whether the S1 sensing end and the S2 sensing end are connected; the input end of the switch module 11 is connected to the output terminal LO, the output end of the switch module 11 is connected to a voltage end of the circuit breaker X1, the other voltage end of the circuit breaker X1 is connected to the output terminal NO, and the control end of the circuit breaker X1 is connected to the control end of the main switch S1 and is used to control the on and off of the main switch S1.

[0031] Specifically, Figure 5 As shown, this embodiment does not need to use inductive devices such as mutual inductors, but by setting a signal-connected S1 inductive end and S2 inductive end, such as setting an inductive connecting line, through which the S1 inductive end and the S2 inductive end are connected. Since the leakage current detection circuit of this embodiment can be optionally applied to plugs and sockets, the output of the plug is generally a cable, so during long-term use, the cable may be broken and other problems may occur, resulting in leakage. Therefore, the S1 inductive end and the S2 inductive end are respectively connected through the metal detection line 1 and the additional signal line 2. Therefore, if the metal detection line 1 or the additional signal line 2 is broken, the S1 inductive end and the S2 inductive end are disconnected, which means that the wire used for current and voltage transmission in the cable may also be disconnected. Therefore, it is possible to determine whether leakage current is generated by connecting or disconnecting the signal between the S1 inductive end and the S2 inductive end, and then control the switch module 11 to be turned on and off through the driving module 10, and then control the circuit breaker X1 to work, generate a circuit breaker signal to disconnect the main switch S1, thereby turning off the output voltage to ensure power safety.

[0032] The input terminal N is connected to the rectifier D1 through the main switch S1. The driving module 10 of this embodiment includes a resistor R5, a resistor R18, a resistor R4 and a resistor R17. The switch module 11 includes a diode Q1 and a diode Q2, wherein the resistor R18 is formed by connecting the resistor R1 and the resistor R2 in series, and the resistor R17 is formed by connecting the resistor R6 and the resistor R7 in series. The anode of the diode Q1 is connected to the output of the rectifier D1, the cathode of the diode Q1 is grounded, the control end of the diode Q1 is connected to the output end of the driving module 10, the anode of the diode Q2 is connected to the output of the rectifier D1, the cathode of the diode Q2 is grounded, and the control end of the diode Q2 is connected to the output end of the driving module 10; the output of the rectifier D1 is connected to the control end of the diode Q1 after passing through the resistor R18 and the resistor R5 in sequence, and the end of the resistor R18 connected to the resistor R5 is connected to the sensing end of S1; the control end of the diode Q2 is grounded through the resistor R4 and the resistor R17 in sequence, and the connection end of the resistor R4 and the resistor R17 is connected to the sensing end of S2. The specific connection method is as follows: Figure 5 As shown, the S1 sensing end and the S2 sensing end of this embodiment are also connected through a sensing connection line. The difference from the first embodiment is the circuit connection method of the driving module 10 and the switch module 11.

[0033] The specific working principle of this embodiment is:

[0034] When the S1 sensing end and the S2 sensing end are connected normally, the output voltage is normal;

[0035] When the connection between the sensing end of S1 and the sensing end of S2 is disconnected, the voltage division of the resistors R18 and R17 causes the diode Q1 to be turned on. At this time, a voltage difference is generated at both ends of the circuit breaker X1, thereby controlling the main switch S1 to trip and cut off the voltage output;

[0036] When the live wire or the neutral wire generates a short-circuit signal with the conductive layer, the live wire or the neutral wire also generates a short-circuit signal with the inductive connection line. At this time, the voltage is divided by resistors R4 and R17, so that the diode Q2 is turned on, thereby generating a voltage difference across the circuit breaker X1, controlling the main switch S1 to trip, cutting off the voltage output, and ensuring the safety of the line.

[0037] Furthermore, this embodiment is also provided with a switch S2 for testing whether the circuit leakage current detection function is normal. Figure 5 As shown, by pressing the switch S2, the driving module 10 can be simulated to output a control signal to control the diode Q2 to be turned on, thereby detecting whether the main switch S1 is tripped, thereby detecting whether the leakage current detection and power-off functions of this embodiment are normal.

[0038] The circuit structure of this embodiment is simple, the wiring arrangement of the circuit board is easy, and the number of components is small, so that the volume of this embodiment is smaller.

[0039] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model is disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content disclosed above without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiments according to the technology of the utility model, which does not depart from the content of the technical solution of the utility model, belongs to the scope of the technical solution of the utility model.

Claims

1. A leakage metal detection circuit device, characterized in that: It includes a detection wire and a detection device, wherein the detection wire includes a metal detection wire, an additional signal wire, a metal outer layer, an insulating protective layer and a plurality of core wires, wherein the additional signal wire, the metal detection wire and the core wire are all wrapped by the metal outer layer, and the insulating protective layer is wrapped around the outer periphery of the metal outer layer; The detection device is provided with an S1 sensing end and an S2 sensing end, one end of the metal detection line is connected to one end of the additional signal line, the other end of the metal detection line is connected to the S1 sensing end, and the other end of the additional signal line is connected to the S2 sensing end. The detection device is used to detect whether the electrical connection between the S1 sensing end and the S2 sensing end is disconnected.

2. A leakage metal detection circuit device according to claim 1, characterized in that: The core wire includes a first conductor group and a first insulating layer wrapped around the outer periphery of the first conductor group.

3. A leakage metal detection circuit device according to claim 1, characterized in that: The metal detection wire is a bare copper wire.

4. A leakage metal detection circuit device according to claim 1, characterized in that: The additional signal line includes a second conductor group and a third insulating layer wrapped around the outer periphery of the second conductor group.

5. A leakage metal detection circuit device according to claim 1, characterized in that: The metal outer layer is an aluminum foil layer.

6. A leakage metal detection circuit device according to claim 1, characterized in that: The core wire also includes a second insulating layer wrapped around the outer periphery of the first insulating layer.

7. A leakage metal detection circuit device according to claim 1, characterized in that: The detection device includes an input terminal L, an input terminal N, an output terminal LO, an output terminal NO, a main switch S1, a drive module, a switch module and a circuit breaker X1, and the drive module is provided with the S1 sensing terminal and the S2 sensing terminal; The input terminal L is connected to the output terminal LO through the main switch S1, and the input terminal N is connected to the output terminal NO through the main switch S1; The input end of the driving module is connected to the output terminal LO, and the output end of the driving module is connected to the control end of the switch module. The driving module is used to control the on and off of the switch module according to the signal of whether the S1 sensing end and the S2 sensing end are connected; the input end of the switch module is connected to the output terminal LO, the output end of the switch module is connected to a voltage end of the circuit breaker X1, the other voltage end of the circuit breaker X1 is connected to the output terminal NO, and the control end of the circuit breaker X1 is connected to the control end of the main switch S1 and is used to control the on and off of the main switch S1.

8. A leakage metal detection circuit device according to claim 7, characterized in that: The input terminal N is connected to the rectifier D1 through the main switch S1, and the switch module includes a diode Q1 and a diode Q2, the anode of the diode Q1 is connected to the output of the rectifier D1, the cathode of the diode Q1 is grounded, the control end of the diode Q1 is connected to the output end of the driving module, the anode of the diode Q2 is connected to the output of the rectifier D1, the cathode of the diode Q2 is grounded, and the control end of the diode Q2 is connected to the output end of the driving module.

9. A leakage metal detection circuit device according to claim 8, characterized in that: The driving module includes a resistor R5, a resistor R18, a resistor R4 and a resistor R17. The output of the rectifier D1 is connected to the control end of the diode Q1 after passing through the resistor R18 and the resistor R5 in sequence. The end of the resistor R18 connected to the resistor R5 is connected to the sensing end of S1; the control end of the diode Q2 is grounded after passing through the resistor R4 and the resistor R17 in sequence, and the connection end of the resistor R4 and the resistor R17 is connected to the sensing end of S2.

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