Electricity larceny prevention device in electric energy meter box

Abstract

The utility model discloses an electricity larceny prevention device in an electric energy meter box, which relates to the field of electric power safety and comprises a power-off device and a plug board matched with the power-off device, the power-off device is fixedly connected to a box wall, the plug board is fixedly connected to a corresponding position on a box door, and the power-off device and the plug board matched with the power-off device are arranged to prevent electricity larceny. When a lawless person opens the box door to steal electricity, the power transmission bus is disconnected, so that the life safety of the lawless person is protected, and the short-time electricity stealing behavior of the lawless person is avoided. And when a certain electric energy meter box is powered off, a power supply enterprise can know the message at the first time and check the message even if the electric energy meter box is powered on again later, so as to check whether the external wiring and the internal structure of the electric energy meter are changed or not, thereby avoiding long-term electricity stealing.

Description

Technical Field

[0001] The utility model relates to the field of electric power safety, in particular to an anti-electricity theft device in an electric energy meter box. Background Art

[0002] Usually, power supply companies conduct electricity theft investigations by combining data query of the electricity information collection system and on-site inspections, and the focus of on-site inspections is the user's electric energy meter device. As an important device for installing electric energy metering instruments, the electric energy meter box is located at the end of the distribution network, with many points and wide areas. Some lawless elements take the opportunity to destroy the blockade of the electric energy meter box door, and then change the external wiring and internal structure of the electric energy meter to achieve the purpose of stealing electricity.

[0003] In fact, in addition to causing losses to national property, electricity theft is also very harmful to the criminals themselves. These criminals are often not electricity professionals, and their operations when changing the external wiring and internal structure of the electricity meter are also very irregular, which poses a huge safety hazard. Once an accident occurs, it will be a tragedy for them themselves and a trouble for the power supply company. Utility Model Content

[0004] The purpose of the utility model is to provide an anti-electricity theft device in an electric energy meter box. By setting a power-off device and a plug plate that cooperates with the power-off device, the power transmission bus can be disconnected when the criminals open the box door to steal electricity, which not only protects the life safety of the criminals, but also prevents the criminals from stealing electricity for a short time. Moreover, when the power is cut off in an electric energy meter box somewhere, the power supply company can know the news in the first time, and even if the power is turned on again later, they will go to check whether the external wiring and internal structure of the mobile electric energy meter have been changed, thereby preventing long-term electricity theft.

[0005] An anti-electricity theft device in an electric energy meter box, comprising a box wall and a box door of the electric energy meter box, a power-off device and a plug-in plate matched with the power-off device, wherein the power-off device is fixedly connected to the box wall, and the plug-in plate is fixedly connected to a corresponding position on the box door;

[0006] The power-off device comprises a rectifier transformer, a battery, a lower metal spring, an upper metal spring and a normally closed relay. The rectifier transformer is connected to the battery, the battery is connected to the lower metal spring, and the normally closed relay is connected to the upper metal spring.

[0007] Preferably, the power-off device is fixedly connected to the box wall via a bracket.

[0008] Preferably, the rectifier transformer is connected to the power transmission bus via a cable, and the contacts of the normally closed relay are also connected to the power transmission bus via a cable.

[0009] Preferably, the rectifier transformer, battery, lower metal spring, upper metal spring and normally closed relay are all fixedly connected in the device housing.

[0010] Preferably, a socket matching with the plug board is provided on the device housing, and the socket is located between the lower metal spring sheet and the upper metal spring sheet.

[0011] The advantages of the utility model are: simple structure, flexible use, by setting a power-off device and a plug plate matched with the power-off device, the power transmission bus can be disconnected when the criminals open the box door to steal electricity, which not only protects the life safety of the criminals, but also prevents the criminals from stealing electricity for a short time. Moreover, when the power is cut off in a certain electric energy meter box, the power supply company can know the news in the first time, and even if the power is restored later, they will go to check whether the external wiring and internal structure of the mobile electric energy meter have been changed, thereby preventing long-term electricity theft. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the installation structure of the device of the utility model;

[0013] Figure 2 It is a front view of the device of the utility model;

[0014] Figure 3 This is a schematic diagram of the internal structure of the power-off device in the utility model device;

[0015] Figure 4 This is a schematic diagram of a normally closed relay switch circuit in the device of the utility model;

[0016] Among them, 1. box wall, 2. box door, 3. bracket, 4. power-off device, 5. plug board, 6. cable, 7. device casing, 8. rectifier transformer, 9. battery, 10. lower metal spring, 11. upper metal spring, 12. normally closed relay, 13. socket. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0018] like Figures 1 to 4 As shown, the present invention includes a box wall 1 and a box door 2 of an electric energy meter box, including a power-off device 4 and a plug-in plate 5 matched with the power-off device 4, wherein the power-off device 4 is fixedly connected to the box wall 1, and the plug-in plate 5 is fixedly connected to a corresponding position on the box door 2; wherein the power-off device 4 is fixedly connected to the box wall 1 via a bracket 3.

[0019] When the cabinet door 2 is closed, the plug board 5 is inserted into the power-off device 4 , and when the cabinet door 2 is opened, the plug board 5 is separated from the power-off device 4 .

[0020] The power-off device 4 includes a rectifier transformer 8, a battery 9, a lower metal spring 10, an upper metal spring 11 and a normally closed relay 12. The rectifier transformer 8 is connected to the battery 9, the battery 9 is connected to the lower metal spring 10, the normally closed relay 12 is connected to the upper metal spring 11, and the rectifier transformer 8, the battery 9, the lower metal spring 10, the upper metal spring 11 and the normally closed relay 12 are all fixedly connected in the device housing 7.

[0021] Particularly, a socket 13 matching with the plug board 5 is provided on the device housing 7 , and the socket 13 is located between the lower metal spring sheet 10 and the upper metal spring sheet 11 .

[0022] The lower metal spring 10 and the upper metal spring 11 are in close contact under normal circumstances, but when the plug board 5 is inserted into the power-off device 4 through the socket 13, the plug board 5 separates the lower metal spring 10 and the upper metal spring 11 (the plug board 5 is made of insulating material), so that the coil of the normally closed relay 12 is de-energized and the contacts are closed. When the plug board 5 is separated from the power-off device 4, the lower metal spring 10 and the upper metal spring 11 are not subjected to external forces and are in close contact under the action of their own elastic force, so that the battery 9 and the coil of the normally closed relay 12 are connected, the coil is energized, and the contacts are opened.

[0023] The rectifier transformer 8 is connected to the power transmission bus through the cable 6, and the contact of the normally closed relay 12 is also connected to the power transmission bus through the cable 6. Therefore, the power transmission bus is disconnected and the power is cut off after the contact is opened.

[0024] Specific implementation and principle:

[0025] When the door 2 is closed, the plug board 5 is inserted into the power-off device 4. At this time, the plug board 5 separates the lower metal spring sheet 10 from the upper metal spring sheet 11 (the plug board 5 is made of insulating material), so that the coil of the normally closed relay 12 is de-energized and the contacts are closed.

[0026] If a criminal wants to destroy the blockade of the electric energy meter door and then change the external wiring and internal structure of the electric energy meter, when the door 2 is opened, the plug board 5 is separated from the power-off device 4, and the lower metal spring 10 and the upper metal spring 11 are not subjected to external force, and they fit together under their own elastic force, so that the battery 9 and the coil of the normally closed relay 12 are connected, the coil is energized, the contacts are opened, and the power transmission bus is disconnected and the power is cut off. Since this line is directly cut off from power, criminals naturally cannot steal electricity for a short time, and the power supply company can know the news immediately when the power is cut off. Therefore, even if they change the external wiring and internal structure of the electric energy meter and then close the door 2, so that this line is powered on again, the power supply company can discover this long-term stealing of electricity when it comes to check. Moreover, when the criminals change the external wiring and internal structure of the electric energy meter, the entire line is cut off from power, which prevents the criminals from being injured by electric shock.

[0027] When the power company staff carry out maintenance themselves, they need to cut off the power according to safety regulations. Therefore, this equipment will not only not hinder the staff's work, but also further improve safety and avoid potential safety hazards caused by the staff forgetting to cut off the power.

[0028] Based on the above, the utility model has a simple structure and is flexible to use. By setting a power-off device and a plug plate that cooperates with the power-off device, the power transmission bus can be disconnected when the criminals open the box door to steal electricity, which not only protects the life safety of the criminals, but also prevents the criminals from stealing electricity for a short time. Moreover, when the power is cut off in a certain electric energy meter box, the power supply company can know the news in the first time, and even if the power is restored later, they will go to check whether the external wiring and internal structure of the dynamic electric energy meter have been changed, thereby preventing long-term electricity theft.

[0029] It is known from common technical knowledge that the present invention can be implemented by other embodiments that do not deviate from its spirit or essential features. Therefore, the embodiments disclosed above are only illustrative in all respects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

Claims

1. An anti-electricity theft device in an electric energy meter box, comprising a box wall (1) and a box door (2) of the electric energy meter box, characterized in that: It comprises a power-off device (4) and a plug plate (5) matched with the power-off device (4), wherein the power-off device (4) is fixedly connected to the box wall (1), and the plug plate (5) is fixedly connected to a corresponding position on the box door (2); The power-off device (4) comprises a rectifier transformer (8), a battery (9), a lower metal spring (10), an upper metal spring (11) and a normally closed relay (12); the rectifier transformer (8) is connected to the battery (9), the battery (9) is connected to the lower metal spring (10), and the normally closed relay (12) is connected to the upper metal spring (11).

2. The anti-electricity theft device in an electric energy meter box according to claim 1, characterized in that: The power-off device (4) is fixedly connected to the box wall (1) via a bracket (3).

3. The anti-electricity theft device in an electric energy meter box according to claim 1, characterized in that: The rectifier transformer (8) is connected to the power transmission bus via a cable (6), and the contacts of the normally closed relay (12) are also connected to the power transmission bus via the cable (6).

4. The anti-electricity theft device in an electric energy meter box according to claim 1, characterized in that: The rectifier transformer (8), battery (9), lower metal spring (10), upper metal spring (11) and normally closed relay (12) are all fixedly connected in the device housing (7).

5. The anti-electricity theft device in an electric energy meter box according to claim 4, characterized in that: The device housing (7) is provided with a socket (13) matched with the plug board (5), and the socket (13) is located between the lower metal spring sheet (10) and the upper metal spring sheet (11).

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