An automatic meter calibration device suitable for three-phase electric energy meter

Abstract

The utility model discloses an automatic table calibration equipment suitable for three -phase electric energy meter relates to electric meter detection equipment technical field, including support mechanism, PC equipment, PLC control cabinet and table calibration executing mechanism, PC equipment, PLC control cabinet and table calibration executing mechanism all are fixed with support mechanism, and PC equipment is located one side of support mechanism, and the top of support mechanism is close to the PLC control cabinet, and table calibration executing mechanism is located the intermediate position of support mechanism, table calibration executing mechanism all includes first electrical control box, second electrical control box, table calibration inspection device and a plurality of table calibration execution monomer that are parallelly arranged, table calibration execution monomer includes adjustable electric meter test piece, electric meter table holder and test needle lower pressure subassembly, the utility model has the advantages of: can optimize table calibration efficiency, and can save artificial cost.

Description

Technical Field

[0001] This utility model relates to the field of electricity meter testing equipment technology, and more specifically, to an automated meter calibration device suitable for three-phase electricity meters. Background Technology

[0002] With the rapid development of the power industry and the continuous improvement of its intelligentization level, the functional and quality requirements of three-phase electricity meters are becoming increasingly stringent. However, the overall calibration of three-phase electricity meters faces many challenges during production and testing. During production, the basic error, neutral current, and clock error of three-phase electricity meters all need to be calibrated. Traditional three-phase meter calibration benches require manual installation and wiring, which is cumbersome, error-prone, inefficient, and wasteful of labor costs.

[0003] Therefore, this utility model provides an automated meter calibration device suitable for three-phase electricity meters, which can optimize calibration efficiency and save labor costs. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, this utility model provides an automated meter calibration device suitable for three-phase electricity meters, which can optimize calibration efficiency and save labor costs.

[0005] The technical solution adopted by this utility model to solve its technical problem is: an automated meter calibration device suitable for three-phase energy meters, the improvement of which is that the automated meter calibration device suitable for three-phase energy meters includes a support mechanism, a PC device, a PLC control cabinet, and a calibration execution mechanism; the PC device, the PLC control cabinet, and the calibration execution mechanism are all fixed to the support mechanism, and the PC device is located on one side of the support mechanism, the PLC control cabinet is close to the top of the support mechanism, and the calibration execution mechanism is located in the middle of the support mechanism;

[0006] Each calibration execution mechanism includes a first electrical control box, a second electrical control box, a calibration testing device, and multiple calibration execution units arranged in parallel. Each calibration execution unit includes an adjustable meter test piece, a meter holder, and a test probe pressing assembly. The bottom of the first electrical control box is fixedly connected to a support mechanism. The second electrical control box is mounted on top of the first electrical control box. The calibration testing device is located inside the support mechanism. The adjustable meter test piece is fixedly connected to the top of the electrical control box. The meter holder is slidably mounted on the top of the first electrical control box, and slides towards or away from the adjustable meter test piece. The test probe pressing assembly is fixedly mounted on the side of the second electrical control box away from the adjustable meter test piece.

[0007] In the above structure, the support mechanism includes a support platform and a support frame; the support platform is fixedly connected to the support frame, and the calibration and inspection device is located inside the support platform.

[0008] In the above structure, the meter calibration mechanism includes a sliding component, which includes a slider and a slide rail; the slider is slidably connected to the slide rail, and the slider is fixedly installed at the bottom of the meter holder, while the slide rail is fixedly installed at the top of the first electrical control box.

[0009] In the above structure, the meter calibration mechanism further includes a U-shaped slider and a first cylinder; the U-shaped slider is slidably connected to the top of the first electrical control box, and the top of the U-shaped slider is fixedly connected to the meter holder, and one side of the U-shaped slider is fixedly connected to the output shaft of the first cylinder; the first cylinder is fixedly installed on the top inner side of the first electrical control box.

[0010] In the above structure, the top of the first electrical control box is provided with a slide groove, which is parallel to the slide rail and is slidably connected to the U-shaped slider.

[0011] In the above structure, the adjustable meter test piece includes a meter test piece body and several wiring current posts. The wiring current posts are detachably connected to the meter test piece body and are close to the meter support. The meter test piece body is fixedly connected to the top of the first electrical control box.

[0012] In the above structure, the test probe pressing assembly includes a second cylinder, a test probe mounting base, and a test probe; the second cylinder is fixedly installed on the side of the second electrical control box away from the adjustable meter test piece; the top of the test probe mounting base is fixedly connected to the output shaft of the second cylinder; and the test probe is fixedly connected to the bottom of the test probe mounting base.

[0013] In the above structure, the meter calibration actuator further includes an emergency stop button, a first start button, a stop button, a switch button, a second start button, a reset button, and a third start button; the emergency stop button, the first start button, the stop button, and the switch button are all fixedly installed on the top of the second electrical control box; the second start button, the reset button, and the third start button are all fixedly installed on the top of the first electrical control box, and are all close to the meter holder.

[0014] In the above structure, the PLC control cabinet is equipped with a dual-color light and a buzzer, with the dual-color light located on the outside of the PLC control cabinet and the buzzer located inside the PLC control cabinet.

[0015] In the above structure, the PC device includes a PC host and a monitor. The PC host is fixedly installed on the top of the support platform, and the monitor is slidably installed on one side of the support frame.

[0016] The beneficial effects of this utility model are as follows: This utility model, through the design of a first electrical control box, a second electrical control box, and multiple parallel calibration execution units, can automate the calibration of three-phase energy meters in conjunction with a PLC control cabinet. Specifically, the calibration execution units automatically feed and unfeed the three-phase energy meter through a meter holder, adapt to the three-phase energy meter type through an adjustable meter test piece, and connect to the test terminals of the three-phase energy meter through a test pin pressing component to calibrate the three-phase energy meter. During this process, only one operator is needed to place the three-phase energy meter in the meter holder, adjust the wiring mode of the adjustable meter test piece to match the three-phase energy meter under test, and start the equipment. No other cumbersome operations are required, and errors are less likely. Furthermore, the multiple calibration execution units in the automated calibration equipment suitable for three-phase energy meters can simultaneously calibrate multiple identical or different three-phase energy meters. Therefore, this utility model can both optimize calibration efficiency and save labor costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an automated meter calibration device applicable to three-phase energy meters according to the present invention.

[0018] Figure 2 This is a schematic diagram of the calibration execution mechanism of an automated meter calibration device applicable to three-phase energy meters according to the present invention;

[0019] Figure 3 This is a schematic diagram of the sliding component of an automated meter calibration device for three-phase energy meters according to the present invention. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other.

[0022] Reference Figure 1As shown, this utility model discloses an automated meter calibration device suitable for three-phase energy meters. The automated meter calibration device includes a support mechanism, a PC device, a PLC control cabinet 2, and a calibration execution mechanism 1. The PC device, PLC control cabinet 2, and calibration execution mechanism 1 are all fixed to the support mechanism, with the PC device located on one side of the support mechanism, the PLC control cabinet 2 near the top of the support mechanism, and the calibration execution mechanism 1 located in the middle of the support mechanism. Each calibration execution mechanism 1 includes a first electrical control box 8, a second electrical control box 9, a meter calibration testing device, and three parallel calibration execution units. The calibration unit includes an adjustable meter test piece, a meter holder 10, and a test probe pressing assembly; the bottom of the first electrical control box 8 is fixedly connected to the support mechanism; the second electrical control box 9 is mounted on the top of the first electrical control box 8; the calibration testing device is located inside the support mechanism; the adjustable meter test piece is fixedly connected to the top of the electrical control box; the meter holder 10 is slidably mounted on the top of the first electrical control box 8, and the meter holder 10 slides along the direction close to or away from the adjustable meter test piece; the test probe pressing assembly is fixedly mounted on the side of the second electrical control box 9 away from the adjustable meter test piece.

[0023] It should be noted that, in this embodiment, the support mechanism, as the core load-bearing component of the entire automated meter calibration equipment applicable to three-phase energy meters, provides necessary mounting surfaces and mechanical support for other components to ensure the structural stability of the entire automated meter calibration equipment applicable to three-phase energy meters. The PC device provides a human-machine interface for operators, mainly used for parameter setting, result display, and information interaction with the PLC control cabinet 2 during the meter calibration process. The PLC control cabinet 2 is responsible for logic control, mainly used to send control commands to the meter calibration execution mechanism 1 during the meter calibration process, thereby realizing the meter calibration flow. The meter calibration execution mechanism 1, as the component that actually performs the meter calibration operation, is used to respond to the control commands of the PLC control cabinet 2 to realize the meter calibration operation of the three-phase energy meters. Specifically, the meter calibration execution mechanism 1 includes a first electrical control box 8, a second electrical control box 9, a meter calibration testing device, and three meter calibration execution units arranged in parallel with each other. The meter calibration execution unit includes an adjustable meter test piece, a meter holder 10, and a test pin pressing assembly. Among them, the first electrical control box 8 is used to enable the meter holder 10 to move closer to or further away from the meter. The adjustable meter test piece is electrically supported for directional movement and response to control commands from the PLC control cabinet 2, and provides mounting surfaces and necessary mechanical support for the meter holder 10, the second electrical control box 9, and the adjustable meter test piece. The second electrical control box 9 provides electrical support for the downward movement of the test probe pressing assembly in response to control commands from the PLC control cabinet 2, and provides mounting surfaces and necessary mechanical support for the test probe pressing assembly. The meter calibration and testing device is a PTC-8300M three-phase portable energy meter testing device with a built-in 0.05-grade standard measuring board, supporting electrical... The adjustable meter test piece allows for full parameter adjustment of voltage, current, phase, and frequency, and is connected to a PC for meter calibration. It adjusts its wiring to match different three-phase meter types (generally, three-phase meters include direct-connection and inductance-connection types). The meter holder 10 pushes the three-phase meter closer to or further away from the adjustable meter test piece, enabling automatic meter entry and exit during calibration. The test probe pressing assembly performs a pressing action to contact the three-phase meter under test, facilitating the calibration test.In implementing this utility model, firstly, the operator adjusts the wiring method of the adjustable meter test piece according to the type of the three-phase energy meter under test, ensuring that the connection position of the power-on terminal of the adjustable meter test piece and the connection terminal of the three-phase energy meter under test is correct; then, the operator places the three-phase energy meter under test into the meter holder 10 and starts the calibration execution mechanism 1. The meter holder 10 places the three-phase energy meter under test into the detection position. After reaching the detection position, the test probe pressing component presses down to achieve contact connection with the test terminals of the three-phase energy meter; finally, after the test terminals of the three-phase energy meter are connected, the TC-8300M three-phase portable energy meter testing device performs the following steps: The three-phase energy meter under test undergoes a calibration process. After calibration, the meter holder 10 moves away from the adjustable meter test piece to remove the calibrated three-phase energy meter. During this process, only one operator is needed to place the three-phase energy meter in the meter holder 10, adjust the wiring mode of the adjustable meter test piece to match the three-phase energy meter under test, and start the equipment. No other cumbersome operations are required, and errors are less likely to occur. In addition, the automated meter calibration equipment suitable for three-phase energy meters can set up multiple calibration execution units to simultaneously calibrate three identical or different three-phase energy meters. Therefore, this embodiment can optimize calibration efficiency and save labor costs.

[0024] Reference Figure 1 As shown, the support mechanism includes a support platform 3 and a support frame 4; the support platform 3 is fixedly connected to the support frame 4, and the calibration device is located inside the support platform 3.

[0025] It should be noted that, in this embodiment, the support platform 3 is used to support the internal meter calibration and testing device, the other components of the top meter calibration execution mechanism 1, and the PC equipment; the support frame 4 provides overall support force to ensure the stability of the overall structure of the automated meter calibration equipment suitable for three-phase energy meters.

[0026] Reference Figure 1 and Figure 3 As shown, the meter calibration actuator 1 includes a sliding assembly, which includes a slider and a slide rail 23. The slider is slidably connected to the slide rail 23, and the slider is fixedly installed at the bottom of the meter holder 10, while the slide rail 23 is fixedly installed at the top of the first electrical control box 8. The meter calibration actuator 1 also includes a U-shaped slider 25 and a first cylinder 26. The U-shaped slider 25 is slidably connected to the top of the first electrical control box 8, and the top of the U-shaped slider 25 is fixedly connected to the meter holder 10. One side of the U-shaped slider 25 is fixedly connected to the output shaft of the first cylinder 26. The first cylinder 26 is fixedly installed on the top inner side of the first electrical control box 8. The top of the first electrical control box 8 is provided with a sliding groove 24, which is parallel to the slide rail 23 and slidably connected to the U-shaped slider 25.

[0027] It should be noted that, in this embodiment, the first cylinder 26 serves as the driving component for the meter holder 10 to move along the direction away from or towards the adjustable meter testing component; the U-shaped slider 25 serves as the transmission component for the movement of the meter holder 10; the slide groove 24 is used to provide a movement trajectory for the U-shaped slider 25; and the sliding component is used to guide the movement of the meter holder 10. In the specific implementation of this utility model, when the output shaft of the first cylinder 26 extends, the U-shaped slider 25 drives the meter holder 10 to move along the slide groove 24 towards the adjustable meter testing component, and the slider slides along the slide rail 23 following the U-shaped slider 25 to realize the automatic meter feeding action of the meter holder 10; when the output shaft of the first cylinder 26 retracts, the U-shaped slider 25 drives the meter holder 10 to move along the slide groove 24 away from the adjustable meter testing component, and the slider also slides along the slide rail 23 following the U-shaped slider 25 to realize the automatic meter retraction action of the meter holder 10.

[0028] Reference Figure 1 and Figure 2 As shown, the adjustable meter test piece includes a meter test piece body 11 and several wiring current columns 12. The wiring current columns 12 are detachably connected to the meter test piece body 11 and are close to the meter support 10. The meter test piece body 11 is fixedly connected to the top of the first electrical control box 8.

[0029] It should be noted that in this embodiment, the operator adjusts the position of the current terminals 12 according to the different current terminals 12 to match the position of the connection terminals of the three-phase energy meter under test, so as to ensure the smooth progress of the meter calibration process.

[0030] Continue to refer to Figure 1 and Figure 2 As shown, the test probe pressing assembly includes a second cylinder 15, a test probe mounting base 14, and a test probe 13; the second cylinder 15 is fixedly installed on the side of the second electrical control box 9 away from the adjustable meter test piece; the top of the test probe mounting base 14 is fixedly connected to the output shaft of the second cylinder 15; and the test probe 13 is fixedly connected to the bottom of the test probe mounting base 14.

[0031] It should be noted that in this embodiment, the second cylinder 15 uses the extension and retraction of its output shaft to achieve the pressing and resetting of the test needle 13. When the meter under test moves to the test position, the output shaft of the second cylinder 15 extends, driving the test needle mounting seat 14 and the test needle 13 to press down. The test needle 13 connects to the test terminal of the three-phase energy meter under test. After the test needle 13 is connected to the test terminal of the three-phase energy meter under test, the calibration process of the three-phase energy meter under test is completed by the calibration and testing device. After the calibration is completed, the output shaft of the second cylinder 15 retracts, driving the test needle mounting seat 14 and the test needle 13 to reset, ready for the next set of meters to be tested.

[0032] Reference Figure 1 As shown, the meter calibration actuator 1 also includes an emergency stop button 16, a first start button 17, a stop button 18, a switch button 19, a second start button 20, a reset button 22, and a third start button 21; the emergency stop button 16, the first start button 17, the stop button 18, and the switch button 19 are all fixedly installed on the top of the second electrical control box 9; the second start button 20, the reset button 22, and the third start button 21 are all fixedly installed on the top of the first electrical control box 8, and are all close to the meter holder 10.

[0033] It should be noted that, in this embodiment, the emergency stop button 16, the first start button 17, the stop button 18, and the switch button 19 are respectively used to perform emergency braking, start, stop, and switch operations on the test probe pressing assembly; the second start button 20 and the third start button 21 are used to start the meter holder 10; and the reset button 22 is used to reset the meter holder 10.

[0034] Reference Figure 1 As shown, the PLC control cabinet 2 is equipped with a dual-color light 7 and a buzzer, with the dual-color light 7 located on the outside of the PLC control cabinet 2 and the buzzer located inside the PLC control cabinet 2.

[0035] It should be noted that, in this embodiment, the dual-color light 7 and the buzzer are used to indicate the calibration results to the operator. Specifically, if the test is qualified, the dual-color light 7 of the corresponding position of the defective product on the calibration table will show green; if it is unqualified, it will show red and the buzzer will sound an alarm.

[0036] Reference Figure 1 As shown, the PC device includes a PC host 5 and a monitor 6. The PC host 5 is fixedly installed on the top of the support platform 3; the monitor 6 is slidably installed on one side of the support frame 4.

[0037] It should be noted that, in this embodiment, the sliding design of the display 6 makes it easy for the operator to adjust the position of the display 6, so as to facilitate the operation of the human-computer interaction interface.

[0038] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. An automated meter calibration device suitable for three-phase energy meters, characterized in that, The automated meter calibration equipment for three-phase energy meters includes a support mechanism, a PC device, a PLC control cabinet, and a calibration execution mechanism. The PC device, PLC control cabinet, and calibration execution mechanism are all fixed to the support mechanism, with the PC device located on one side of the support mechanism, the PLC control cabinet near the top of the support mechanism, and the calibration execution mechanism located in the middle of the support mechanism. Each calibration execution mechanism includes a first electrical control box, a second electrical control box, a calibration testing device, and multiple calibration execution units arranged in parallel. Each calibration execution unit includes an adjustable meter test piece, a meter holder, and a test probe pressing assembly. The bottom of the first electrical control box is fixedly connected to a support mechanism. The second electrical control box is mounted on top of the first electrical control box. The calibration testing device is located inside the support mechanism. The adjustable meter test piece is fixedly connected to the top of the electrical control box. The meter holder is slidably mounted on the top of the first electrical control box, and slides towards or away from the adjustable meter test piece. The test probe pressing assembly is fixedly installed on the side of the second electrical control box away from the adjustable meter test piece.

2. The automated meter calibration device for three-phase energy meters according to claim 1, characterized in that, The support mechanism includes a support platform and a support frame; the support platform is fixedly connected to the support frame, and the calibration device is located inside the support platform.

3. The automated meter calibration device for three-phase energy meters according to claim 1, characterized in that, The meter calibration mechanism includes a sliding component, which includes a slider and a slide rail. The slider is slidably connected to the slide rail, and the slider is fixedly installed at the bottom of the meter holder, while the slide rail is fixedly installed at the top of the first electrical control box.

4. An automated meter calibration device for three-phase energy meters according to claim 3, characterized in that, The calibration mechanism further includes a U-shaped slider and a first cylinder; the U-shaped slider is slidably connected to the top of the first electrical control box, and the top of the U-shaped slider is fixedly connected to the meter holder, and one side of the U-shaped slider is fixedly connected to the output shaft of the first cylinder; the first cylinder is fixedly installed on the top inner side of the first electrical control box.

5. An automated meter calibration device for three-phase energy meters according to claim 4, characterized in that, The top of the first electrical control box is provided with a sliding groove, which is parallel to the slide rail and is slidably connected to the U-shaped slider.

6. An automated meter calibration device for three-phase energy meters according to claim 1, characterized in that, The adjustable electricity meter test piece includes a main body and several wiring current posts. The wiring current posts are detachably connected to the main body of the electricity meter test piece and are close to the meter support. The main body of the electricity meter test piece is fixedly connected to the top of the first electrical control box.

7. An automated meter calibration device for three-phase energy meters according to claim 1, characterized in that, The test probe pressing assembly includes a second cylinder, a test probe mounting base, and a test probe; the second cylinder is fixedly installed on the side of the second electrical control box away from the adjustable meter test piece; the top of the test probe mounting base is fixedly connected to the output shaft of the second cylinder; and the test probe is fixedly connected to the bottom of the test probe mounting base.

8. An automated meter calibration device for three-phase energy meters according to claim 1, characterized in that, The meter calibration mechanism also includes an emergency stop button, a first start button, a stop button, a switch button, a second start button, a reset button, and a third start button; the emergency stop button, the first start button, the stop button, and the switch button are all fixedly installed on the top of the second electrical control box; the second start button, the reset button, and the third start button are all fixedly installed on the top of the first electrical control box, and are all close to the meter holder.

9. An automated meter calibration device for three-phase energy meters according to claim 1, characterized in that, The PLC control cabinet is equipped with a dual-color light and a buzzer, with the dual-color light located on the outside of the PLC control cabinet and the buzzer located inside the PLC control cabinet.

10. An automated meter calibration device for three-phase energy meters according to claim 2, characterized in that, The PC device includes a PC host and a monitor. The PC host is fixedly installed on the top of the support platform; the monitor is slidably installed on one side of the support frame.

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