CN213750051U

CN213750051U - Electric energy meter circuit capable of preventing electricity from being stolen

Info

Publication number: CN213750051U
Application number: CN202022869110.5U
Authority: CN
Inventors: 葛宗光
Original assignee: Qingdao iTechene Technologies Co ltd
Current assignee: Qingdao iTechene Technologies Co ltd
Priority date: 2020-12-04
Filing date: 2020-12-04
Publication date: 2021-07-20
Anticipated expiration: 2030-12-04

Abstract

An electric energy meter circuit capable of preventing electricity stealing comprises a disconnection detection circuit, wherein the disconnection detection circuit comprises: the system comprises a disconnection detection module, a 1A line, a 1B line, a 2A line and a 2B line, wherein the disconnection detection module is arranged in the electric energy meter, one ends of the 1A line and the 1B line are respectively connected into the disconnection detection module, and the other ends of the 1A line and the 1B line are in short circuit in a wiring bank; one end of the 2A line and one end of the 2B line are respectively connected to the broken line detection module, and the other ends of the 2A line and the 2B line are in short circuit in the circuit breaker; the broken line detection module, the line 1A, the line 1B, the line 2A and the line 2B form a loop. The advantages are that: the L, N incoming and outgoing lines are coated with the 1A line, the 1B line, the 2A line and the 2B line by adopting the three-core line, and the broken line detection module, the 1A line, the 1B line, the 2A line and the 2B line are connected into a loop, so that the external power line can be detected to be cut off; the electric energy meter correspondingly records the starting time and the ending time of the occurrence of the disconnection event, generates the report of the electricity stealing event, overcomes the problem that the electricity stealing of the electric energy meter is difficult to find due to the reconnection of the electric energy meter for many years, and further achieves the purpose of electricity stealing prevention.

Description

Electric energy meter circuit capable of preventing electricity from being stolen

Technical Field

The utility model belongs to the technical field of the electric wire netting equipment, concretely relates to anti-electricity-theft electric energy meter circuit.

Background

In order to prevent electricity stealing, the power supply department generally adopts a measure of placing the electric energy meter into a meter box for installation, because the electric energy meter has strong electricity stealing prevention capability without damaging the meter box. As shown in fig. 4, in the conventional electric energy meter wiring mode, an LN line is connected to a meter box wiring bar, 1 and 3 lines are led out from the wiring bar to an L inlet and an N inlet of the electric energy meter, and 2 and 4 lines are led out from the L outlet and the N outlet to a circuit breaker, and then to an service line through the circuit breaker. However, the existing meter box is easy to open, so that opening the meter box to rewire is the most common way to steal electricity at present.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the defects in the prior art are overcome, and the anti-electricity-theft electric energy meter circuit which is convenient to detect and safe to use is provided.

The utility model provides a technical scheme that its technical problem adopted is: an electric energy meter circuit for preventing electricity stealing is disclosed, which comprises an electric energy meter arranged in a meter box, wherein L, N incoming wires are respectively connected to an L incoming port and an N incoming port of the electric energy meter through a wiring row, L, N outgoing wires are respectively connected out from the L outgoing port and the N outgoing port of the electric energy meter and are connected to a subscriber line through a circuit breaker; the method is characterized in that: still include the broken string detection circuitry, the broken string detection circuitry includes: the system comprises a disconnection detection module, a 1A line, a 1B line, a 2A line and a 2B line, wherein the disconnection detection module is arranged in the electric energy meter, one ends of the 1A line and the 1B line are respectively connected into the disconnection detection module, and the other ends of the 1A line and the 1B line are in short circuit in a wiring bank; one end of the 2A line and one end of the 2B line are respectively connected to the disconnection detection module, and the other ends of the 2A line and the 2B line are in short circuit in the circuit breaker; the broken line detection module, the 1A line, the 1B line, the 2A line and the 2B line form a loop.

The disconnection detection module includes: the circuit comprises a resistor R1, a resistor R2 and a power supply VDD, wherein one end of the resistor R1 is connected with the power supply VDD, the other end of the resistor R1 is connected with the line 1A, and the line 1A is in short circuit with the line 1B through a wiring bank; the 1B line and the 2B line are connected inside the disconnection detection module, and the 2B line and the 2A line are in short circuit through a breaker; the 2A line is connected with the resistor R2, and the resistor R2 outputs a detection signal.

Compared with the prior art, the beneficial effects of the utility model are that: the L, N incoming and outgoing lines are coated with the 1A line, the 1B line, the 2A line and the 2B line by adopting the three-core line, and the broken line detection module, the 1A line, the 1B line, the 2A line and the 2B line are connected into a loop, so that the external power line can be detected to be cut off; the electric energy meter correspondingly records the starting time and the ending time of the occurrence of the disconnection event, generates the report of the electricity stealing event, overcomes the problem that the electricity stealing of the electric energy meter is difficult to find due to the reconnection of the electric energy meter for many years, and further achieves the purpose of electricity stealing prevention.

Drawings

Fig. 1 is a circuit schematic diagram of an embodiment of the present invention;

fig. 2 is a cross-sectional view of a three-core wire in an embodiment of the invention;

fig. 3 is a schematic circuit diagram of a disconnection detection circuit in an embodiment of the present invention;

fig. 4 is a circuit diagram of the prior art.

Detailed Description

The invention is further described with reference to the following embodiments:

example one

As shown in fig. 1, 2, and 3, an electricity larceny prevention electric energy meter circuit includes an electric energy meter arranged in a meter box, an L incoming line and an N incoming line are respectively connected to two ports of an "L incoming" port and an "N incoming" port of the electric energy meter through a wiring bank, an L outgoing line and an N outgoing line are respectively connected out from two ports of an "L outgoing" port and an "N outgoing" port of the electric energy meter, and are connected to a subscriber line through a circuit breaker; still include broken string detection circuitry, broken string detection circuitry includes: the system comprises a disconnection detection module, a 1A line, a 1B line, a 2A line and a 2B line, wherein the disconnection detection module is arranged in the electric energy meter, one ends of the 1A line and the 1B line are respectively connected into the disconnection detection module, and the other ends of the 1A line and the 1B line are in short circuit in a wiring bank; one end of the 2A line and one end of the 2B line are respectively connected to the broken line detection module, and the other ends of the 2A line and the 2B line are in short circuit in the circuit breaker; the broken line detection module, the line 1A, the line 1B, the line 2A and the line 2B form a loop.

The disconnection detection module includes: the circuit comprises a resistor R1, a resistor R2 and a power supply VDD, wherein one end of the resistor R1 is connected with the power supply VDD, the other end of the resistor R1 is connected with a line 1A, and the line 1A is in short circuit with a line 1B through a wiring bank; the 1B line and the 2B line are connected inside the disconnection detection module, and the 2B line and the 2A line are in short circuit through a breaker; the 2A line is connected to a resistor R2, and the resistor R2 outputs a detection signal.

The working principle of the utility model is as follows:

as shown in fig. 1, 2 and 3, the L incoming line, the 1A line and the 1B line are coated into the same cable, and the L outgoing line, the 2A line and the 2B line are coated into the same cable, that is, a 3-core wire is used to replace a single-core wire in the prior art; 3, two strands of thin wires of the core wire are a broken wire detection module with one end connected into the inside of the ammeter, and the other end is respectively in short circuit at the positions of the wiring bar and the circuit breaker; when the wiring is completed, the 1A, 1B, 2A and 2B wires form a loop.

One end of the disconnection detection module R1 is connected with VDD, the other end is connected with 1A, 1A and 1B are in short circuit at the position of the wiring bank, 1B and 2B are connected in the disconnection detection module, 2B and 2A are in short circuit at the position of the circuit breaker, 2A and R2 are connected, and R2 outputs a detection signal. When the detection signal is at a high level, the circuit is closed; otherwise the wire is cut. When the L incoming line or the L outgoing line is cut, any one of the

wires

1A, 1B, 2A, and 2B is also cut, and a loop cannot be formed. The internal broken wire detection module of the electric energy meter can detect that the access wire is cut off and record corresponding electricity stealing events.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical substance of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. An electric energy meter circuit for preventing electricity stealing is disclosed, which comprises an electric energy meter arranged in a meter box, wherein L, N incoming wires are respectively connected to an L incoming port and an N incoming port of the electric energy meter through a wiring row, L, N outgoing wires are respectively connected out from the L outgoing port and the N outgoing port of the electric energy meter and are connected to a subscriber line through a circuit breaker; the method is characterized in that: still include the broken string detection circuitry, the broken string detection circuitry includes: the system comprises a disconnection detection module, a 1A line, a 1B line, a 2A line and a 2B line, wherein the disconnection detection module is arranged in the electric energy meter, one ends of the 1A line and the 1B line are respectively connected into the disconnection detection module, and the other ends of the 1A line and the 1B line are in short circuit in a wiring bank; one end of the 2A line and one end of the 2B line are respectively connected to the disconnection detection module, and the other ends of the 2A line and the 2B line are in short circuit in the circuit breaker; the broken line detection module, the 1A line, the 1B line, the 2A line and the 2B line form a loop;