Safety debugging device for electric energy meter

Abstract

The utility model discloses a safety debugging device for an electric energy meter, which comprises a power source, a main control computer, a display, a start-stop control device and a meter mounting assembly which are mounted on a table body, and further comprises a plurality of groups of first relays and contactors which are in one-to-one correspondence with first microswitches, and a second relay. Whether the insulation door is closed or not is detected through the second microswitch, meanwhile, whether the meter is installed on the selected meter position or not is detected through the first microswitch, the meter position can be powered on only when the insulation door is normally closed and the meter is installed on the selected meter position, and the protection capacity and safety of equipment are improved; and an electric shock accident is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of electricity meter debugging, and specifically relates to a device for debugging electricity meters. Background Technology

[0002] Electricity meter calibration devices typically include modules such as a main controller and a power source. By applying different voltages and currents to the electricity meter and reading the relevant data, they test whether the meter's functions and performance meet standards. For example, Chinese utility model patent CN204855788U discloses an error processor and an electricity meter calibration device. The power source is connected to the electricity meter under test via current terminals on the meter socket. The main controller communicates with the power source and controls it to complete different testing items.

[0003] Most current testing and commissioning devices for electricity meters have an open structure with poor protection capabilities. If an operator touches a live terminal during operation, there is a risk of electric shock. Although some products have added semi-protective plastic covers to protect the terminals, there is still a risk of electric shock if the operator operates improperly or makes a mistake. Utility Model Content

[0004] This utility model proposes a safety debugging device for electricity meters, the purpose of which is to solve the problem that the existing debugging devices have poor protection capabilities and that operators are prone to electric shock.

[0005] The technical solution of this utility model is as follows:

[0006] A safety debugging device for an electricity meter includes a power source, a main control unit, a display, a start / stop control device, and a meter mounting assembly installed on a platform.

[0007] The main control unit is connected to the display;

[0008] The meter installation assembly includes a mounting plate with several meter positions. Each meter position is provided with a fixing mechanism and a connection socket for electrically connecting with the energy meter on the meter position. The fixing mechanism is used to fix the energy meter placed on the meter position to the mounting plate.

[0009] The start / stop control device is used to control the power supply of the electricity meter safety debugging device; the main control unit is connected to the power source, and the power source is connected to the connection meter base through a connection line;

[0010] The top of the platform is provided with an opening, and an insulating door and a second micro switch for detecting whether the insulating door is closed are installed at the opening. The meter mounting assembly is located in the area below the opening.

[0011] Each meter position on the mounting plate is also provided with a first micro switch for detecting whether the meter is installed in place.

[0012] The platform is also equipped with a selector switch, and the working position of the selector switch corresponds one-to-one with each meter position.

[0013] The electricity meter safety debugging device also includes several sets of first relays and contactors corresponding one-to-one with the first micro switch, and also includes a second relay; the normally open contact of the first micro switch and the coil of the corresponding first relay are connected in series between the positive and negative terminals of the power supply, and the normally open contact of the second micro switch and the coil of the second relay are connected in series between the positive and negative terminals of the power supply; the positive terminal of the power supply is connected to the common terminal of the changeover switch through the normally open contact of the second relay, and the connection terminals of the changeover switch corresponding to each station are connected to the negative terminal of the power supply through the normally open contact of the corresponding first relay and the coil of the corresponding contactor, respectively.

[0014] The power source has an output terminal that corresponds to each meter position; in the connection line, each output terminal is connected to the corresponding connection meter base through the normally open contact of the corresponding contactor.

[0015] As a further improvement to the safety debugging device for the electricity meter: the insulating door is made of transparent material, or the insulating door is provided with an observation window.

[0016] As a further improvement to the safety debugging device for the electricity meter: a front panel is provided on the front side of the platform, and the main controller and power source are located in the platform and in the inner area of ​​the front panel.

[0017] As a further improvement to the aforementioned electricity meter safety debugging device: a side door is provided on the side of the platform;

[0018] The first relay, the second relay, and the contactor are all mounted on a guide rail, which is located in the platform and inside the side door area.

[0019] As a further improvement to the safety debugging device for the electricity meter: the display is mounted on the top of the platform via an articulated bracket.

[0020] As a further improvement to the safety debugging device for the electricity meter: the start / stop control device and the changeover switch are both located on the top of the platform.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] 1. This utility model uses a second micro switch to detect whether the insulating door is closed, and at the same time uses a first micro switch to detect whether a meter is installed at the selected meter position. Only when the insulating door is properly closed and a meter is installed at the selected meter position can the meter position be energized, thereby improving the protection capability and safety of the equipment and avoiding electric shock accidents.

[0023] 2. After the insulation board is installed, the top of the platform can be used as a working area and the working status of the internal energy meter can be easily observed. Attached Figure Description

[0024] Figure 1 This is a perspective view of the present utility model;

[0025] Figure 2 This is a top view of the present invention after the insulating board has been removed;

[0026] Figure 3 This is a front view of the present invention after the front panel has been removed;

[0027] Figure 4 This is a side view of the present invention after the side door has been removed;

[0028] Figure 5 Side view of the meter mounting components;

[0029] Figure 6 This is a connection diagram of a micro switch and a relay;

[0030] Figure 7 This is a schematic diagram showing the power source connected to the connector base via contactor contacts. Detailed Implementation

[0031] The technical solution of this utility model will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0032] like Figures 1 to 4 A safety debugging device for an electricity meter includes a platform 1, a power source 11, a main controller 10, a display 4, a start / stop control device 6, a meter mounting assembly 8, and an electrical control device.

[0033] The platform 1 has a box-like structure. The front of the platform 1 has an openable front panel 7, and the rear has a rear panel. Both the front and rear panels have ventilation holes. The left and right sides of the platform 1 have openable side doors. The top of the platform 1 has an opening covered with an insulating plate. The insulating door 5 is made of transparent material, or it may have an observation window.

[0034] The main control unit 10 and power source 11 are located in the platform 1 and inside the front panel 7. The meter mounting assembly 8 is located below the opening; operation is possible after opening the insulating plate. An insulating door 5 and a second micro switch 9 for detecting whether the insulating door 5 is closed are installed at the opening. The electrical control devices (mainly including relays and contactors) are all mounted on guide rails 12, which are located in the platform 1 and inside the side door; wiring operations are possible by opening the side door. The display 4 is mounted on the top of the platform 1 via an articulated bracket 3, allowing for flexible adjustment of the display 4's position and angle. The top surface of the platform 1 can be used as a work surface; the start / stop control device 6 and the selector switch 2 are both located on the top of the platform 1.

[0035] Furthermore, such as Figure 2 and 5 The meter mounting assembly 8 includes a mounting plate with several meter positions. Each meter position has a fixing mechanism 8-1 and a connecting base 8-3 for electrically connecting to the energy meter on the meter position. The fixing mechanism 8-1 can be a cylinder, an electric push rod, or a manual push rod locking mechanism, etc., used to fix the energy meter placed on the meter position to the mounting plate. The connecting base 8-3 has several connecting terminals. Different meter positions may correspond to different meter models, such as single-phase meters and three-phase meters, and the structure of the connecting base 8-3 will also be different accordingly. Each meter position on the mounting plate is also provided with a first micro switch 8-2 ​​for detecting whether the meter is installed in place.

[0036] Furthermore, the start / stop control device 6 is used to control the power supply of the electricity meter safety debugging device. The main control unit 10 is connected to the display 4. The main control unit 10 is connected to the power source 11 and is used to set the relevant parameters of the power source 11. The power source 11 is connected to the connection socket 8-3 through a connection line, and outputs the set voltage and current to the meter through the connection socket 8-3.

[0037] The working position of the changeover switch 2 corresponds one-to-one with each meter position. In this embodiment, there are 3 meter positions, and the changeover switch 2 has 3 working positions.

[0038] like Figure 6The electrical control device includes several sets of first relays and contactors corresponding one-to-one with the three first microswitches 8-2, and also includes second relays. The normally open contacts of the first microswitches 8-2 are connected in series with the coils of the corresponding first relays between the positive and negative terminals of the power supply. The normally open contacts of the second microswitches 9 are connected in series with the coils of the second relays between the positive and negative terminals of the power supply. The positive terminal of the power supply is connected to the common terminal of the changeover switch 2 through the normally open contacts of the second relays. The connection terminals of the changeover switch 2 corresponding to each workstation are connected to the negative terminal of the power supply through the normally open contacts of the corresponding first relays and the coils of the corresponding contactors.

[0039] like Figure 7 The power source 11 has an output terminal that corresponds one-to-one with each meter position. In the connection line, each output terminal is connected to the corresponding connection base 8-3 through the normally open contact of the corresponding contactor.

[0040] During debugging, first open the insulating door 5, then place the energy meter to be tested into the corresponding position. Correctly connect the energy meter's interface to the connecting base 8-3. Then operate the fixing mechanism 8-1 to press the energy meter firmly. At this time, the first microswitch 8-2 ​​on that position is pressed down, and its normally open contact closes. Then close the insulating door 5, at which point the normally open contact of the second microswitch 9 closes. Operate the start / stop control device 6 to power on the equipment. Operate the selector switch 2, pointing it to the previously operated position. Then set the relevant parameters through the main control unit 10. At this time, the output terminal of the power source 11 begins to output voltage / current. For example... Figure 6 and 7 Only when the insulating door 5 and the meter position are equipped with an energy meter will the second micro switch 9 and the first micro switch 8-2 ​​corresponding to the meter position close, and the second relay and the corresponding first relay be energized and their normally open contacts close, thereby enabling the contactor corresponding to the meter position to close, and then enabling the connecting base 8-3 of the meter position to be normally connected to the power source 11.

[0041] If the insulating door 5 is not properly closed, all contactors will be unable to receive power, and no meter position will be energized. Similarly, if an energy meter is not installed at a certain meter position, even if the changeover switch 2 is switched to that meter position, the corresponding contactor will not be energized and will not be able to close, making it impossible to energize and debug that meter position. Therefore, this device ensures that debugging is always carried out with the energy meter properly installed and the insulating door 5 correctly closed, improving the equipment's protection capabilities and safety, and preventing electric shock accidents.

[0042] It should be noted that, as will be apparent to those skilled in the art, this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. The scope of this utility model is defined by the claims rather than the foregoing description.

Claims

1. A safety debugging device for an electricity meter, comprising a power source (11), a main controller (10), a display (4), a start / stop control device (6), and a meter mounting assembly (8) installed on a platform (1). The main control unit (10) is connected to the display (4); The meter installation assembly (8) includes an installation plate with a plurality of meter positions. Each meter position is provided with a fixing mechanism (8-1) and a connecting meter base (8-3) for electrically connecting with the energy meter on the meter position. The fixing mechanism (8-1) is used to fix the energy meter placed on the meter position to the installation plate. The start / stop control device (6) is used to control the power supply of the electricity meter safety debugging device; the main controller (10) is connected to the power source (11), and the power source (11) is connected to the connection base (8-3) through a connecting line, characterized in that: The top of the platform (1) is provided with an opening, and an insulating door (5) and a second micro switch (9) for detecting whether the insulating door (5) is closed are installed at the opening. The meter mounting assembly (8) is located in the area below the opening. Each meter position on the mounting plate is also provided with a first micro switch (8-2) for detecting whether the meter is installed in place. The platform (1) is also equipped with a changeover switch (2), and the working position of the changeover switch (2) corresponds to each meter position; The power meter safety debugging device also includes several sets of first relays and contactors corresponding one-to-one with the first micro switch (8-2), and also includes a second relay; the normally open contact of the first micro switch (8-2) and the coil of the corresponding first relay are connected in series between the positive and negative terminals of the power supply, and the normally open contact of the second micro switch (9) and the coil of the second relay are connected in series between the positive and negative terminals of the power supply; the positive terminal of the power supply is connected to the common terminal of the changeover switch (2) through the normally open contact of the second relay, and the connection terminals of the changeover switch (2) corresponding to each station are connected to the negative terminal of the power supply through the normally open contact of the corresponding first relay and the coil of the corresponding contactor; The power source (11) has an output terminal that corresponds to each meter position; in the connection line, each output terminal is connected to the corresponding connection meter base (8-3) through the normally open contact of the corresponding contactor.

2. The electricity meter safety debugging device as described in claim 1, characterized in that: The insulating door (5) is made of transparent material, or the insulating door (5) is provided with an observation window.

3. The electricity meter safety debugging device as described in claim 1, characterized in that: The platform (1) has a front panel (7) on its front side. The main controller (10) and the power source (11) are located in the platform (1) and in the inner area of ​​the front panel (7).

4. The electricity meter safety debugging device as described in claim 1, characterized in that: The platform (1) has a side door on its side; The first relay, the second relay and the contactor are all mounted on the guide rail (12), which is located in the platform (1) and in the inner area of ​​the side door.

5. The electricity meter safety debugging device as described in claim 1, characterized in that: The display (4) is mounted on top of the platform (1) via an articulated bracket (3).

6. The electricity meter safety debugging device as described in claim 1, characterized in that: The start / stop control device (6) and the changeover switch (2) are both located on the top of the platform (1).

Images