WO2020258812A1

WO2020258812A1 - Portable device for detecting strong magnet-enabled electricity theft

Info

Publication number: WO2020258812A1
Application number: PCT/CN2019/130072
Authority: WO
Inventors: 王白根; 张雪; 潘学文; 汪伯康; 赵明志; 李伟龙; 王欧; 鲍兴江; 邵竹星; 程坤; 李爱民; 陈伍; 高艳; 钱亚林; 汪李来; 曹闻骊; 王冠宇; 胡光景
Original assignee: 国网安徽省电力有限公司安庆供电公司; 国家电网有限公司
Priority date: 2019-06-24
Filing date: 2019-12-30
Publication date: 2020-12-30
Also published as: DE112019002777T5; CN110133350A

Abstract

A portable device for detecting strong magnet-enabled electricity theft, comprising a telescopic rod (2) and a detection device (4) installed at the front end of the telescopic rod (2), wherein the detection device (4) is connected to an aviation plug female socket (6) and comprises a detection circuit used for detecting situation of strong magnet-enabled electricity theft; the aviation plug female socket (6) respectively enables a metal probe (9) or a magnetically sensitive switch (12) to be connected to the detection circuit by means of a first aviation plug male socket (7) and a second aviation plug male socket (10) for checking electricity or detecting the magnetic field situation around an electric energy meter.

Description

Portable strong magnetic power stealing detection device

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office with an application number of 201910550810.7 on June 24, 2019. The entire content of this application is incorporated into this application by reference.

Technical field

This application relates to the technical field of power supply auxiliary equipment, for example, to a portable strong magnetic power theft detection device.

Background technique

With the development of the social economy and the increase in power consumption, the problem of electricity theft in society has become more and more prominent. According to conservative estimates, the country's annual loss of 20 billion yuan due to theft of electricity is not only troubled by the development of power supply companies. It also seriously affected the country's economic construction and social stability. The electric energy meter is generally installed in a special metering box, and the cable enters and exits through the pipe, and the metering box is sealed. Therefore, if conventional methods of stealing electricity are used, such as bypassing the meter current loop, changing the voltage loop of the electric energy meter, connecting the electricity stealing device, or bypassing the metering device to use electricity, either the appearance or external wiring of the meter is changed, or the original Lead seals can be easily found by meter readers or power monitoring personnel of power supply companies.

In recent years, there has been a phenomenon of stealing electricity by attaching a strong magnet to the metering box or the back of the electric energy meter. When a strong magnet is attached to the metering box near the electric energy meter, the electric energy of the electric energy meter will be less or not counted. The strong magnetic power stealing method has the characteristics of not opening the electric meter box and blocking, not moving any electric equipment, and strong concealment. Therefore, the power stealing is extremely convenient and the on-site authentication is very difficult. It is difficult to produce results by a single power theft audit.

When it is suspected to be a strong magnetic power stealing at the scene, compared with the power stealing methods such as voltage division and shunting, there will be four more links such as reporting and assembly and disassembly of the electric meter, making the process cumbersome and inefficient. The strong magnetic power theft detection method is manual disassembly and inspection of the meter. Although there are uniform requirements for the installation position of the meter box at the work site (no more than 1.8m above the ground), due to historical reasons and the limitations of the user site, many users’ meter boxes are placed on poles and high walls. When conducting electricity theft inspections, it is necessary for supervisors to work on the ladders, and even in some places they can only work on stools, which cannot meet the safety regulations for high-altitude operations. Climbing work greatly wastes the physical strength and working time of the operators, is inefficient, and has safety risks. It may fall off the ladder or stool and cause injury to the operators. In addition, during the electricity theft inspection, taking into account the need to obtain evidence and take pictures, the electricity cannot be cut off directly, and the customer's electric meter needs to be disassembled for inspection when the electricity is on. There is a risk of electric shock.

Based on this, there is an urgent need for a portable strong magnetic electricity theft detection device that can detect whether there is a strong magnetic field around the electric energy meter, and can meet different meter box heights, prevent electric shock, and is easy to carry.

Summary of the invention

The present application provides a portable strong magnetic electricity theft detection device that can detect whether there is a strong magnetic field around the electric energy meter, and can meet the requirements of different meter box heights, prevent electric shock, and be easy to carry.

The present application provides a portable strong magnetic power theft detection device, which includes a telescopic pole and a detection device installed at the front end of the telescopic pole. The detection device is connected to an aviation plug female seat, and the detection device contains a device for detecting strong magnetic theft. Electricity detection circuit, said aviation plug female seat connects the metal probe or magnetic sensitive switch with the detection circuit through the first aviation plug male seat and the second aviation plug male seat respectively, and is used for electrical inspection or detecting the surrounding magnetic field of the electric energy meter.

Description of the drawings

Figure 1 is a schematic diagram of the main body structure of a portable strong magnetic power theft detection device in an embodiment;

FIG. 2 is a related structure diagram of the metal probe of the portable strong magnetic electricity theft detection device in the embodiment;

Figure 3 is a structural diagram of the magnetic sensitive switch of the portable strong magnetic power theft detection device in the embodiment;

Fig. 4 is a schematic circuit diagram of the portable strong magnetic power theft detection device in the embodiment.

Detailed ways

The embodiments of the present application are described below. The embodiments are implemented on the premise of the technical solution of the present application, and implementation modes and operation processes are given, but the protection scope of the present application is not limited to the following embodiments.

Example 1

As shown in Figures 1-3, a portable strong magnetic power theft detection device of this embodiment includes a telescopic pole 2 and a detection device 4 installed at the front end of the telescopic pole 2, and the detection device 4 is connected to an aviation plug socket 6. The detection device 4 includes a detection circuit for detecting strong magnetic power theft. The aviation plug female seat 6 connects the metal probe 9 or the magnetic probe 9 or magnetic through the first aviation plug male seat 7 and the second aviation plug male seat 10 respectively. The sensitive switch 12 is connected to a detection circuit for electric test or detection of the magnetic field around the electric energy meter. The detection circuit includes a test circuit, a detection circuit, an alarm circuit, and a power supply circuit. The test circuit is connected to the alarm circuit and the power supply through the test button S1 The detection circuit includes an electrical detection detection circuit and a magnetic field detection circuit. The electrical detection detection circuit is connected to pin B3 of the NAND gate TC4011BP integrated circuit through a resistor. The magnetic field detection circuit is connected in parallel with a reed switch U1 at both ends of the test circuit; One end of the test button is connected to the power supply, and the other end of the test button is connected to the B3 pin of the four-two input NAND gate TC4011BP integrated circuit; the magnetic switch has a built-in reed switch U1, and the reed switch U1 is connected to a capacitor C7; the capacitor One end of C7 is connected to the reed switch U1, and the other end of the capacitor C7 is grounded; the portable strong magnetic electricity theft detection device provided in this embodiment can realize the dual functions of electricity detection and strong magnetic detection. When the aviation plug is connected to the metal probe, it has Electricity detection function, when the metal probe detects electricity, it transmits a high potential signal to the four-two input NAND gate TC4011BP integrated circuit through the resistance, and then the alarm circuit acts and sends an alarm signal. When the aviation plug is connected to a magnetic switch, it has a magnetic detection function. When it is close to the magnet, the reed switch acts, the internal switch is closed, and the circuit forms a closed loop, and then the alarm circuit acts and sends out an alarm signal.

In one embodiment, the aviation plug female seat 6 connects the metal probe 9 with the detection circuit through the first aviation plug male seat 7 or the aviation plug female seat 6 connects the magnetic probe through the second aviation plug male seat 10 The sensitive switch 12 is connected to the detection circuit, and is used for electric test or detection of the magnetic field around the electric energy meter.

The portable strong magnetic power theft detection device provided in this application can realize the dual functions of electric detection and strong magnetic detection. When the aviation plug is connected to the metal probe, it has the electric detection function at this time. When the metal probe detects that there is electricity, it transmits high The potential signal is sent to the four-two input NAND gate TC4011BP integrated circuit, and then the alarm circuit acts and sends out an alarm signal. When the aviation plug is connected to a magnetic switch, it has a strong magnetic detection function. When it is close to a strong magnet, the reed switch will act, the internal switch will be closed, and the circuit will form a closed loop, and then the alarm circuit will act and send an alarm signal. The telescopic pole of this application has seven telescopic tubes, which can meet the detection of 2.5-meter altimeter boxes. The staff does not need to climb the ladder, avoiding the risk of working at height and the risk of electric shock. The portable strong magnetic power theft detection device of the present application can realize the replacement of the power detection and strong magnetic detection functions by plugging and unplugging the aviation plug. This application has obvious advantages such as reasonable structure and convenient use.

Example 2

This embodiment is basically the same as Embodiment 1, and the main difference is that it also includes a first protective sleeve 8 and a second protective sleeve 11. The first protective sleeve 8 is installed on the first aviation plug male seat 7 and the metal probe 9, the second protective sleeve 11 is installed between the second aviation plug male seat 10 and the magnetic switch 12. The protective sleeve makes the connection between the metal probe or the magnetic switch and the aviation plug closer, preventing easy contact bad.

In one embodiment, it further includes: a first protective cover 8 installed between the first aviation plug male seat 7 and the metal probe 9, or installed between the second aviation plug male seat 10 and the The second protective sleeve 11 between the magnetic switches (12).

In one embodiment, this embodiment further includes a handle 1 connected to the end of the telescopic rod 2 to facilitate the operation of the tester.

Example 3

This embodiment is basically the same as Embodiment 1, and the main difference is that it also includes a test button 3, which is installed on the detection device 4 to control the on-off of the detection circuit; and also includes an acousto-optic alarm 5. The acousto-optic alarm 5 is installed on the detection device 4 to display the detection result of the detection circuit; turn on the test button S1, connect the alarm circuit and the power circuit, and when the detection circuit detects the magnetic field or is charged when the electric meter is in contact with the electric meter, input High level or the circuit is turned on, the alarm circuit is controlled by the B3 pin of the NAND gate TC4011BP integrated circuit, and the alarm signal is sent out. The detection device is turned off at any time through the test button. In addition, the sound and light alarm can facilitate the testers' visual observation and detection result.

When the test button S1 is turned on, the alarm circuit and the power circuit are turned on, and when the detection circuit contacts the electric meter and detects a magnetic field or electrification, the detection circuit inputs a high level or The detection circuit is turned on, and the B3 pin of the NAND gate TC4011BP integrated circuit controls the action of the alarm circuit to send an alarm signal.

In an embodiment, the test button 3 and the test button S1 may be the same button.

In the case of strong magnetic power theft detection in this application, a magnetic switch probe is installed, the telescopic rod is extended to a suitable position, and the detection is performed around the electric meter box. When there is a power theft, the alarm circuit will act and give an alarm.

In the case of electrical circuit detection in this application, a metal probe is installed, the telescopic rod is extended to a suitable position, and the detection is performed on the line that needs to be energized. When it is energized, the alarm circuit will act and give an alarm.

Claims

A portable strong magnetic power theft detection device, comprising a telescopic pole (2) and a detection device (4) installed at the front end of the telescopic pole (2), the detection device (4) is connected to an aviation plug socket (6), The detection device (4) includes a detection circuit for detecting strong magnetic power theft. The aviation plug female seat (6) connects the metal probe (9) with the detection circuit through the first aviation plug male seat (7). Or the aviation plug female seat (6) connects the magnetic sensitive switch (12) with the detection circuit through the second aviation plug male seat (10), so as to be used for electrical inspection or detecting the surrounding magnetic field of the electric energy meter.
The portable strong magnetic electricity theft detection device according to claim 1, further comprising: a first protective sleeve (8) installed between the first aviation plug male seat (7) and the metal probe (9), Or a second protective sleeve (11) installed between the second aviation plug male seat (10) and the magnetic switch (12).
The portable strong magnetic power theft detection device according to claim 1, further comprising: a test button (3) installed on the detection device (4) for controlling the communication of the detection circuit Off.
The portable strong magnetic power theft detection device according to claim 1, further comprising: a sound and light alarm (5), the sound and light alarm (5) is installed on the detection device (4) for displaying the The test result of the test circuit.
The portable strong magnetic power theft detection device according to claim 1, wherein the detection circuit includes a test circuit, a detection circuit, an alarm circuit, and a power supply circuit; the test circuit is connected to the alarm circuit and the alarm circuit through a test button S1 Power supply circuit; the detection circuit includes an electrical detection detection circuit and a magnetic field detection circuit, the electrical detection detection circuit is connected to the B3 pin of the NAND gate TC4011BP integrated circuit through a resistor, the magnetic field detection circuit is at both ends of the test circuit The reed switch U1 is connected in parallel; one end of the test button S1 is connected to the power supply, and the other end of the test button S1 is connected to the B3 pin of the NAND gate TC4011BP integrated circuit; the magnetic switch (12) is built in the reed switch U1, the reed switch U1 is connected to a capacitor C7; one end of the capacitor C7 is connected to the reed switch U1, and the other end of the capacitor C7 is grounded.
The portable strong magnetic power theft detection device according to claim 5, wherein when the test button S1 is turned on, the alarm circuit and the power circuit are connected, and the detection circuit contacts the electric meter and detects In the case of a magnetic field or electrification, the detection circuit inputs a high level or the detection circuit is turned on, and the B3 pin of the NAND gate TC4011BP integrated circuit controls the action of the alarm circuit to send an alarm signal.
The portable strong magnetic electricity theft detection device according to claim 1, further comprising: a handle (1) connected to the end of the telescopic rod (2).