CN102565475A - Electricity stealing prevention device for electric energy meter - Google Patents

Abstract

The invention discloses an electric energy meter anti-stealing device. A magnetic sheet is arranged near two contacts of a magnetic sensitive switch, and can perform a reciprocating linear motion away from or close to the magnetic sensitive switch. The magnetic sheet is connected with a sliding insulating pole. The sliding insulating pole is connected to the ground and the pre-tightening force spring is inserted into the terminal and can perform reciprocating linear motion relative to the terminal. There is a groove on one side of the sliding insulating pole, and the start and stop column controlled by the combination lock is pressed. On the groove side of the sliding insulated pole, the two contacts of the magnetic sensitive switch are respectively connected to the two contacts of the conductive sheet of the terminal, and the middle section of the conductive sheet is made of insulating material, and the two ends are conductive and the middle is non-conductive. Structure. The anti-stealing device of the electric energy meter has reasonable structure design, convenient use, safety and reliability. Once someone steals electricity, the anti-stealing module immediately works to cut off the input power supply and cut off the power circuit, which overcomes the long-standing unsolved problems and effectively Electricity theft is prevented.

Description

Energy meter anti-theft device

technical field

The present invention relates to an electric energy meter, in particular to an electric energy meter anti-stealing device that can effectively prevent electricity theft.

the

Background technique

At present, some criminals take advantage of loopholes in power installation and management, deliberately change the phase, voltage, and current wiring methods of the metering circuit of the electric energy meter, change the structure and performance of the electric energy meter itself, and wantonly steal electricity, thus making the power supply department and the country Resources and property caused heavy losses.

Contents of the invention

The purpose of the present invention is to overcome the disadvantages of the prior art, and provide an anti-stealing device for electric energy meters that can prevent electricity theft.

An electric energy meter anti-stealing device is characterized in that it includes a magnetic sensitive switch, a magnetic sheet, a sliding insulating pole, a start and stop column, a combination lock, a return spring and a terminal, and the magnetic sheet is arranged on the two contacts of the magnetic sensitive switch. Nearby, and can do reciprocating linear motion away from or close to the magnetic sensitive switch. The magnetic sheet is connected with the sliding insulating pole, and the sliding insulating pole is inserted into the terminal through the pre-tightening force spring and can perform reciprocating linear motion relative to the terminal. , the pre-tightening force spring presses the magnetic sheet connected to the sliding insulating pole at the position where the two contact points of the magnetic sensitive switch can be pulled together, and a groove is arranged on one side of the sliding insulating pole, and the combination lock The start-stop column of the control is pressed and arranged on the groove side of the sliding insulating pole, and in the running direction of the sliding insulating pole when the pre-tightening force spring is in the released state, the two contacts of the magnetic sensitive switch are respectively connected to the wiring The two contacts of the column conductive sheet are connected, and the middle section of the conductive sheet is made of insulating material to form a structure in which both ends are conductive and the middle is non-conductive.

The electric energy meter anti-stealing device of this structure, because the magnetic sensitive switch is a kind of special switch, its two contacts are made of special materials, are encapsulated in the glass tube of vacuum. Just approach it with a magnet, and the two contacts will snap together, making the circuit conductive. Therefore the present invention utilizes this feature of the magnetic sensitive switch, the magnetic sensitive switch is introduced in the anti-theft device, and the magnetic sheet is set near the magnetic sensitive switch, utilizes the magnetic sheet to control the suction and closing of the magnetic sensitive switch, and the magnetic sheet And through a simple and ingenious structure, the magnetic piece is connected to the sliding insulating pole, and the sliding insulating pole is pressed into the terminal through the pre-tightened spring. The insulated pole moves immediately due to the action of the pre-tightened spring, so that the insulated pole drives the magnetic piece away from the magnetic sensitive switch, so that the two contacts of the magnetic sensitive switch are separated, and the live wire of the input terminal is disconnected, thereby achieving the function of cutting off the input live wire , while the insulating pole is moving, the start-stop column slides into the groove at the moment when the groove of the insulating pole matches with it. Due to the function of the code lock, the start-stop column locks the sliding insulating pole so that it cannot be reset , so as to cut off the power supply, so as to prevent electricity theft. If the power supply needs to be restored, the personnel of the power supply department must open the set password, reset the sliding insulating pole and connect the live wire of the power supply to the terminal, so that the sliding insulating pole can lift the magnetic piece and make it close to the magnetic switch, so that The contact action is closed to resume normal operation.

The magnetic sensitive switch is a dry reed switch.

The magnetic sheet is an NdFeB magnetic sheet. It has the characteristics of small size and light weight. It is an artificial permanent magnet and the permanent magnet with the strongest magnetic force so far.

Said binding post may directly use the binding post of the original electric energy meter to refit it, that is, the conductive metal sheet of the original live wire binding post is divided into two, and separated by bakelite insulating material in the middle. Certainly also can directly replace original binding post with new binding post, and new binding post is that its conductive metal sheet is that the upper and lower sections are conductive metal sheets, and the middle section is an insulating section made of insulating material.

The combination lock is a three-digit combination lock.

In summary, compared with the prior art, the present invention has the following advantages:

The anti-stealing device of the electric energy meter has reasonable structure design, convenient use, safety and reliability. Once someone steals electricity, the anti-stealing module immediately works to cut off the input power supply and cut off the power circuit, which overcomes the long-standing unsolved problems and effectively Electricity theft is prevented. It can directly add this device to a new electric energy meter, or modify an existing old electric energy meter. The modification is also very simple and convenient. It only needs to modify the conductive sheet of the original electric energy meter terminal, so Very applicable.

the

Description of drawings

Figure 1 is the schematic diagram of the anti-theft electric energy meter.

Fig. 2 is a structural diagram of the anti-stealing device.

Figure 3 is a diagram of the modified conductive sheet.

Figure 4 is a schematic diagram of reed switch wiring.

Fig. 5 is a schematic diagram of the electric energy meter anti-stealing device after the conductive piece of the live wire terminal is pulled out.

Fig. 6 is a schematic diagram of the electric energy meter anti-stealing device in a normal power input state.

Explanation of symbols: 1 dry reed switch 2 NdFeB magnetic sheet 3 sliding insulating pole 4 start-stop column 5 three-digit code lock 6 pre-tension spring 7 terminal post 8 live wire access wire 9 conductive sheet 10 bakelite insulator.

Detailed ways

The present invention will be described in more detail below in conjunction with examples.

Example 1

An electric energy meter anti-stealing device as shown in Figure 1-6, comprising a 16A reed switch 1, a NdFeB magnetic sheet 2, a sliding insulating pole 3, a start and stop column 4, a three-digit combination lock 5, The pre-tension spring 6 and the terminal post 7 jointly form an electric energy meter anti-stealing device. The NdFeB magnetic sheet is set near the two contacts of the reed switch, and can move away from or close to the reed switch in a reciprocating linear motion. The magnetic sheet is connected to the sliding insulating pole, and the sliding insulating pole is connected to the ground preload spring. It is inserted into the terminal and can perform reciprocating linear motion relative to the terminal. The pre-tightening force spring presses the magnetic piece connected to the sliding insulating pole at the position where the two contact points of the dry reed switch can be pulled together. There is a groove on one side of the insulating pole, and the start-stop column controlled by the combination lock is pressed tightly on the groove side of the sliding insulating pole and is in the running direction of the sliding insulating pole when the pre-tightening force spring is in the released state. , the two contacts of the reed switch are respectively connected to the two contacts of the conductive sheet 9 of the terminal, and the middle section of the conductive sheet is made of insulating material—bakelite insulator 10 to form a conductive structure at both ends and a non-conductive middle.

Under normal circumstances, the reed switch is a group of closed contacts, the contacts 1 and 2 are statically closed, and the power supply is normal, that is, the wire 8 withstands the sliding insulating pole 3, so that the NdFeB magnetic sheet 2 is close to the 16A reed switch 1 , the dry reed switch contacts 1 and 2 are closed, and the input circuit is connected, so that the electric energy meter is in a normal working state. Once someone steals the electricity and pulls out the live wire of the input power from the terminal of the ammeter, the anti-theft sliding insulating pole 3 will act immediately due to the effect of the pre-tightening spring 6, and the start and stop column 4 will slide into the groove, so that the NdFeB magnet 2 Leaving the 16A dry reed switch 1, the static contact 1 and 2 of the dry reed switch are pulled apart at this time, and the live wire of the input terminal is disconnected, thereby achieving the function of cutting off the live wire of the input. At this time, due to the effect of the three-digit combination lock 5, the start and stop post 4 locks the sliding insulation pole post 3, so that it cannot be reset, and the power supply is cut off, so that the purpose of preventing electricity theft is played. If the power supply needs to be restored, the sliding insulating pole 3 can be reset only after the personnel of the power supply department open it with the set password, and the wire 8 is reconnected, and the reset sliding insulating pole 3 lifts the NdFeB magnetic sheet 2, Close to the 16A dry reed switch 1 to make the dry reed switch 1 act, the contacts 1 and 2 are closed, and the normal operation resumes after closing.

The parts not described in this embodiment are the same as the prior art.

Claims (5)

1. electrical energy meter anti-theft electricity device; It is characterized in that: include magnetosensitive switch, magnetic sheet, slip insulation pole, start-stop post, coded lock, back-moving spring and binding post; Magnetic sheet be arranged at magnetosensitive switch two contacts near; And relatively the magnetosensitive switch do away from or near linear reciprocating motion; Magnetic sheet links to each other with the insulation pole that slides; The insulation pole earthing prefastening force spring that slides inserts in the binding post and the terminal that can connect is done linear reciprocating motion; Described prefastening force spring will be pressed in the magnetic sheet that the insulation pole that slides link to each other and can let the position of magnetosensitive switch two contact point adhesives, be provided with a groove in a side of the insulation pole that slides, and insulated on the traffic direction of pole by the slide groove side of insulation pole and when prefastening force spring is in release conditions, sliding of compacted being arranged at of the start-stop post of coded lock control; Two contacts of described magnetosensitive switch link to each other with two contacts of binding post conducting strip respectively, and described conducting strip stage casing forms the middle nonconducting structure of two ends conduction for being made up of insulating material.

2. electrical energy meter anti-theft electricity device according to claim 1 is characterized in that: described magnetosensitive switch is a tongue tube.

3. electrical energy meter anti-theft electricity device according to claim 2 is characterized in that: described magnetic sheet is a ndfeb disk.

4. electrical energy meter anti-theft electricity device according to claim 3; It is characterized in that: described binding post or directly utilize the binding post of former electric energy meter that it is reequiped; Former firewire binding post conductive metal sheet is divided into two, separates with the bakelite insulating material in the centre; Or directly replace original binding post with new binding post, and its conductive metal sheet is that two sections are the sheet metal of conduction, the stage casing is the insulating segment that insulating material constitutes.

5. electrical energy meter anti-theft electricity device according to claim 4 is characterized in that: described coded lock is the coded lock of three bit digital.

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