A power connection structure of a three-phase electric meter checking device

Abstract

The utility model discloses a kind of electrical connection structures of three-phase electric meter checking equipment, including fixing frame, incoming terminal and outgoing terminal, incoming terminal is electrically connected with outgoing terminal, incoming terminal and outgoing terminal are detachably installed in fixed frame;By at least one of incoming terminal and outgoing terminal is designed as detachably installed in fixed frame, the limitation of traditional fixed wiring structure is broken through.This design gives checking equipment very high flexibility and adaptability, so that it can quickly adjust terminal layout according to the live wire inlet and outlet end position of three-phase electric meter, so as to perfectly match different types of electric meter.

Description

Technical Field

[0001] This utility model relates to the field of electricity meter calibration equipment technology, and in particular to a power connection structure for a three-phase electricity meter calibration equipment. Background Technology

[0002] Three-phase electricity meters undergo accuracy and functional testing at the factory to ensure their performance meets standards. Existing three-phase meter calibration equipment typically includes a connection structure with three input terminals and three output terminals. The input terminals connect to the live wire inputs of the three-phase meter, and the output terminals connect to the live wire outputs. However, the positions of the input and output terminals in existing calibration equipment are fixed. This leads to a problem: in some three-phase meters, the input and output terminals of the three live wires are located on the same side of the meter, while in others, they are located on opposite sides. Therefore, the connection structure of existing calibration equipment has poor versatility and cannot adapt to different types of three-phase meters, causing inconvenience to meter calibration. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a power connection structure for a three-phase meter calibration device with good versatility.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a power connection structure for a three-phase electricity meter calibration device, including a fixed frame, an input terminal and an output terminal, wherein the input terminal and the output terminal are electrically connected, and at least one of the input terminal and the output terminal is detachably installed on the fixed frame.

[0005] Furthermore, the power input terminal and the power output terminal include an insulator and a plug probe formed on the insulator, the insulator being detachably mounted on the mounting bracket.

[0006] Furthermore, the insulator is provided with a limiting notch, and the fixing frame is provided with a detachable limiting rod, which cooperates with the limiting notch.

[0007] Furthermore, the limiting rod and / or the limiting notch are provided with damping elements.

[0008] Furthermore, the number of the limiting rods is at least two, and the number of limiting notches on the insulator is the same as the number of the limiting rods.

[0009] Furthermore, the insertion probe is exposed at the top and / or bottom of the insulator.

[0010] Furthermore, the power input terminal and the power output terminal also include a terminal formed in the insulator.

[0011] Furthermore, the insulator of the power input terminal is provided with a first identification mark and / or the insulator of the power output terminal is provided with a second identification mark.

[0012] Furthermore, the first identification mark and / or the second identification mark are made of reflective material.

[0013] Furthermore, it also includes a cover that covers the portion of the insertion probe exposed in the insulator.

[0014] The beneficial effects of this utility model are as follows: The power connection structure of the three-phase electricity meter calibration equipment provided by this utility model breaks through the limitations of the traditional fixed wiring structure by designing at least one of the power input and output terminals as detachable and installable on the fixed frame. This design gives the calibration equipment extremely high flexibility and adaptability, enabling it to quickly adjust the terminal layout according to the position of the live wire input and output terminals of the three-phase electricity meter (whether located on the same side or opposite sides), thus perfectly matching different types of electricity meters. It not only solves the problems of poor universality and difficult wiring caused by the fixed wiring structure of existing calibration equipment, but also significantly improves the compatibility and practicality of the calibration equipment, greatly simplifies the wiring operation in the calibration process, reduces the risk of calibration failure due to wiring errors, and provides a more efficient and reliable solution for electricity meter calibration work. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the three-phase electricity meter calibration device according to one embodiment of the present invention from one perspective. Figure 2 This is a schematic diagram of the three-phase electricity meter calibration device according to Embodiment 1 of this utility model from another perspective. Figure 3 This is a schematic diagram of the cross-sectional structure of the three-phase electricity meter calibration device according to Embodiment 1 of this utility model; Figure 4 for Figure 3 Enlarged detail view of point A in the middle; Figure 5 This is an assembly diagram of the power connection structure of Embodiment 1 of this utility model (after hiding the wires). Figure 6 This is a schematic diagram of the fixing frame according to Embodiment 1 of this utility model; Figure 7 This is a schematic diagram of the power input terminal according to Embodiment 1 of this utility model; Figure 8 This is a schematic diagram of the output terminal of Embodiment 1 of this utility model.

[0016] Label Explanation: 1. Three-phase electricity meter calibration equipment; 11. Wire; 2. Fixing frame; 21. Limiting rod; 22. Damping component; 23. Side plate; 24. Mounting hole; 3. Power input terminal; 31 / 41. Insulator; 311 / 411. Limiting notch; 32 / 42. Insertion probe; 33 / 43. Terminal block; 4. Power output terminal; 5. Encapsulation cover; 6. Three-phase electricity meter. Detailed Implementation

[0017] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0018] Please refer to Figures 1 to 8 As shown, the power connection structure of a three-phase electricity meter calibration device includes a fixed frame 2, an input terminal 3 and an output terminal 4. The input terminal 3 and the output terminal 4 are electrically connected, and at least one of the input terminal 3 and the output terminal 4 is detachably installed on the fixed frame 2.

[0019] As described above, the beneficial effects of this utility model are as follows: by designing the power input terminal 3 and power output terminal 4 to be detachably installed on the mounting bracket 2, the limitations of the traditional fixed wiring structure are overcome. This design gives the calibration equipment extremely high flexibility and adaptability, enabling it to quickly adjust the terminal layout according to the position of the live wire input and output terminals of the three-phase electricity meter (whether located on the same side or opposite sides), thus perfectly matching different types of electricity meters. It not only solves the problems of poor versatility and difficult wiring caused by the fixed wiring structure of existing calibration equipment, but also significantly improves the compatibility and practicality of the calibration equipment, greatly simplifies the wiring operation in the calibration process, reduces the risk of calibration failure due to wiring errors, and provides a more efficient and reliable solution for electricity meter calibration work.

[0020] Furthermore, the power input terminal 3 and the power output terminal 4 include an insulator and a plug probe formed on the insulator, and the insulator is detachably mounted on the fixing frame 2.

[0021] As described above, the power input terminal 3 and power output terminal 4 are designed with insulators and insertion probes, and the insulators are detachably mounted on the mounting bracket 2. This design not only ensures the safety of the connection (the use of insulators prevents leakage and electric shock risks), but also achieves a fast and stable electrical connection through the insertion probes. At the same time, the detachability of the insulator further enhances the flexibility and ease of maintenance of the connection structure, facilitating the replacement of damaged terminals or the adjustment of terminal configuration as needed.

[0022] Furthermore, the insulator is provided with a limiting notch, and the fixing frame 2 is provided with a detachable limiting rod 21, which cooperates with the limiting notch.

[0023] As described above, by providing a limiting notch on the insulator and a detachable limiting rod 21 on the fixing frame 2, the insulator can be securely installed on the fixing frame 2 through the cooperation of the limiting notch and the limiting rod 21. This limiting structure effectively prevents the insulator from loosening or shifting during use, ensuring the stability and reliability of the electrical connection structure. At the same time, the detachable design of the limiting rod 21 facilitates the installation and removal of the insulator, further improving operational convenience.

[0024] Furthermore, the limiting rod 21 and / or the limiting notch are provided with a damping element 22.

[0025] As described above, the damping element 22 on the limiting rod 21 and / or the limiting notch increases the friction between the insulator and the fixing frame 2, further improving the stability of the insulator after installation and preventing the insulator from loosening or falling off due to external forces. The damping element 22 also reduces the impact of vibration on the insulator, extends the service life of the electrical connection structure, and provides a smoother operating experience during installation and disassembly.

[0026] Furthermore, the number of the limiting rods 21 is at least two, and the number of limiting notches on the insulator is the same as the number of the limiting rods.

[0027] As described above, by setting at least two limiting rods 21 and ensuring that the number of limiting notches on the insulator is the same as the number of limiting rods 21, the insulator can be limited from multiple directions, further enhancing the stability of the insulator installation. This multi-point limiting design effectively prevents displacement of the insulator in various directions, ensuring that the electrical connection structure maintains good performance in complex working environments and improving the reliability and stability of the calibration equipment.

[0028] Furthermore, the insertion probe is exposed at the top and / or bottom of the insulator.

[0029] As described above, exposing the probes on the top and / or bottom of the insulator facilitates quick connection to other devices or wires. This design simplifies wiring operations, improves the efficiency of the calibration equipment, and ensures good electrical contact, guaranteeing calibration accuracy. Furthermore, this structure facilitates the inspection and maintenance of the probes.

[0030] Furthermore, the power input terminal 3 and the power output terminal 4 also include terminals formed in the insulator.

[0031] As described above, the forming of terminals on the insulators of the power input terminal 3 and the power output terminal 4 provides users with an additional connection method. These terminals can be used to connect traditional wires or cables, increasing the flexibility and versatility of the connection structure and enabling it to adapt to different wiring scenarios and requirements. This design allows the calibration equipment to be more widely used in various calibration environments.

[0032] Furthermore, the insulator 31 of the power input terminal 3 is provided with a first identification mark and / or the insulator 41 of the power output terminal 4 is provided with a second identification mark.

[0033] As described above, placing a first identification mark on the insulator of the power input terminal 3 and / or a second identification mark on the insulator of the power output terminal 4 helps operators quickly distinguish between different terminals and avoids errors during wiring. This marking design significantly improves the accuracy and efficiency of wiring, reduces the risk of verification failure or equipment damage due to wiring errors, and also facilitates the maintenance and inspection of the verification equipment.

[0034] Furthermore, the first identification mark and / or the second identification mark are made of reflective material.

[0035] As described above, designing the first and / or second identification markers as reflective materials provides better visibility in low-light environments. Reflective materials reflect light, making the markers more conspicuous and further improving the operator's identification efficiency in different environments, ensuring the smooth progress of verification work. This design is particularly practical in verification scenarios with insufficient lighting.

[0036] Furthermore, it also includes a packaging cover 5, which covers the portion of the insertion probe exposed outside the insulator.

[0037] As described above, by covering the portion of the insertion probe exposed to the insulator with the encapsulation cover 5, the insertion probe can be protected, preventing dust, impurities, or other external factors from contaminating or damaging it. The design of the encapsulation cover 5 not only extends the service life of the insertion probe but also improves the reliability and stability of the connection structure. Furthermore, the encapsulation cover 5 can be easily opened when insertion operations are required, without affecting normal use.

[0038] Embodiment 1 of this utility model is as follows: (Refer to...) Figure 1A power connection structure for a three-phase electricity meter calibration device includes a mounting frame 2, an input terminal 3, and an output terminal 4. The mounting frame 2 is installed on the outer wall of the three-phase electricity meter calibration device 1. The input terminal 3 and the output terminal 4 are electrically connected via a wire 11. The input terminal 3 is electrically connected to the electronic components inside the three-phase electricity meter calibration device 1. The specific working principle of the three-phase electricity meter calibration device 1 and the specific structure of its internal electronic components are well known in the art and will not be described in detail here. The input terminal 3 and the output terminal 4 are detachable. The three-phase meter 6 is mounted on the mounting bracket 2. Specifically, the three-phase meter 6 generally includes three live wires and one neutral wire. Each live wire and neutral wire has an output end and an input end. In this embodiment, only three input terminals 3 and three output terminals 4 are shown. The three input terminals 3 are used to connect to the live wire input end of the three-phase meter 6, and the three output terminals 4 are used to connect to the live wire output end of the three-phase meter 6. In some other embodiments, the output terminals 4 can also be used to connect to the neutral wire output end of the three-phase meter 6, and the input terminals 3 can also be used to connect to the neutral wire input end of the three-phase meter.

[0039] Please combine Figure 1 When the output and input ends of the three live wires of the three-phase meter 6 are both located at its bottom, the power input terminal 3 and the power output terminal 4 are both installed on the fixing frame 2, and the three-phase meter 6 can be directly plugged into the corresponding power input terminal 3 and power output terminal 4.

[0040] Please combine Figure 2 When the output and input ends of the three live wires of the three-phase meter 6 are located on opposite sides of the meter, as in this embodiment, when the input end of the live wire of the three-phase meter 6 is located at the bottom of the three-phase meter 6 and the output end of the live wire is located at the top of the three-phase meter 6; when calibrating the three-phase meter 6, the input end of the live wire at the bottom of the three-phase meter 6 is inserted and fixed to the power input terminal 3, and the power output terminal 4 is removed from the fixing frame 2 and inserted to the output end of the live wire at the top of the three-phase meter 6.

[0041] Of course, in some other embodiments, when the live wire input end of the three-phase meter 6 is located at the top of the three-phase meter 6 and the live wire output end is located at the bottom of the three-phase meter 6, when calibrating the three-phase meter 6, the live wire output end at the bottom of the three-phase meter 6 is plugged and fixed to the output terminal 4, and the input terminal 3 is removed from the fixing frame 2 and plugged into the live wire input end at the top of the three-phase meter 6.

[0042] Specifically, the power input terminal 3 includes an insulator 31 and a probe 32 formed on the insulator 31, and the insulator 31 is detachably mounted on the mounting bracket 2; the power output terminal 4 includes an insulator 41 and a probe 42 formed on the insulator 41, and the insulator 41 is detachably mounted on the mounting bracket 2. The probe 31 is used to connect to the live wire input terminal of the three-phase meter 6, and the probe 42 is used to connect to the live wire output terminal of the three-phase meter 6.

[0043] Please combine Figure 3 and Figure 4 The insulator 31 and the insulator 41 are provided with limiting notches 311 and 411, respectively. The fixing frame 2 is provided with a detachable limiting rod 21. The limiting rod 21 cooperates with the limiting notches 311 and 411. By providing limiting notches on the insulator 31 and detachable limiting rods 21 on the fixing frame 2, the insulator 31 can be securely installed on the fixing frame 2 through the cooperation of the limiting notches and limiting rods 21. This limiting structure can effectively prevent the insulators 31 and 41 from loosening or shifting during use, ensuring the stability and reliability of the electrical connection structure. At the same time, the detachable design of the limiting rod 21 also facilitates the installation and removal of the insulators 31 and 41, further improving the convenience of operation. Optionally, the limiting rod 21 and / or the limiting notch are provided with damping elements 22, such as... Figure 4 As shown, in this embodiment, the damping element 22 is a damping sleeve disposed on the outer surface of the limiting rod 21. This increases the friction between the insulator and the fixing frame 2, further improving the stability of the insulator after installation and preventing the insulator from loosening or falling off due to external forces. The damping element 22 also reduces the impact of vibration on the insulator, extends the service life of the electrical connection structure, and provides a smoother operating experience during installation and disassembly.

[0044] Optionally, the number of limiting rods 21 is at least two, and the number of limiting notches 311 on the insulator 31 and the number of limiting notches 411 on the insulator 411 are the same as the number of limiting rods 21. This allows for limiting of the insulators 31 and 41 from multiple directions, further enhancing the stability of their installation. This multi-point limiting design effectively prevents displacement of the insulators 31 and 41 in all directions, ensuring that the electrical connection structure maintains good performance in complex working environments and improving the reliability and stability of the calibration equipment.

[0045] Please combine Figure 5 and Figure 6In this embodiment, the fixing frame 2 includes two side plates 23 and four limiting rods 21. The side walls of the side plates 23 are provided with four mounting holes 24. The limiting rods 21 are round rods. The limiting rods 21 are bolted through the mounting holes 24 and installed between the two side plates 23. When the four limiting rods 21 are kept parallel to each other between the side plates, a locking space is formed. The power input terminal 3 and / or the power output terminal 4 are assembled in the locking space.

[0046] Please combine Figure 7 The power input terminal 3 also includes a terminal block 33 formed in the insulator 31, providing the user with an additional connection method. The terminal block 33 can be used to connect traditional wires or cables, increasing the flexibility and versatility of the connection structure, enabling it to adapt to different wiring scenarios and needs. This design allows the testing equipment to be more widely used in various testing environments. Specifically, limiting notches 311 are respectively provided at the four corners of the insulator 31, that is, there are four limiting notches 311. More specifically, the limiting notches 311 are arc-shaped, with the two upper limiting notches 311 connecting the top and sidewall of the insulator 311, and the two lower limiting notches 311 connecting the bottom and sidewall of the insulator 311. In this embodiment, for the case where the inlet of the live wire of the three-phase meter 6 is located at the bottom of the three-phase meter 6 and the outlet of the live wire is located at the top or bottom of the three-phase meter 6, considering that the power input terminal 3 does not need to change the plug position, the plug probe 32 is set to only be exposed at the top of the insulator 31.

[0047] In some other embodiments, the insertion probe 32 may be exposed only at the bottom of the insulator 31, or the insertion probe 32 may be exposed at both the top and bottom of the insulator 31; the specific details can be adjusted according to actual usage requirements.

[0048] Please combine Figure 8The output terminal 4 also includes a terminal block 43 formed in the insulator 41, providing the user with an additional connection method. The terminal block 43 can be used to connect traditional wires or cables, increasing the flexibility and versatility of the connection structure, enabling it to adapt to different wiring scenarios and needs. This design allows the testing equipment to be more widely used in various testing environments. Specifically, limiting notches 411 are respectively provided at the four corners of the insulator 41, that is, there are four limiting notches 411. More specifically, the limiting notches 411 are arc-shaped, with the two upper limiting notches 411 connecting the top and sidewall of the insulator 411, and the two lower limiting notches 411 connecting the bottom and sidewall of the insulator 411. In this embodiment, considering that the inlet of the live wire of the three-phase meter 6 is located at the bottom of the three-phase meter 6 and the outlet of the live wire is located at the top or bottom of the three-phase meter 6, and taking into account the switching of the plug-in position of the output terminal 4, the plug-in probe 42 is set to be exposed at both the top and bottom of the insulator 41.

[0049] In some other embodiments, the insertion probe 42 may be exposed only at the bottom of the insulator 41, or the insertion probe 42 may be exposed only at the top of the insulator 41; the specific details can be adjusted according to actual usage requirements.

[0050] like Figure 1 As shown, it also includes a sealing cover 5. When the output and input ends of the three live wires of the three-phase meter 6 are both located at its bottom, the input terminal 3 and the output terminal 4 are both installed on the fixing frame 2. By inserting the plug-in probe 42 exposed on the top of the insulator 41 into the output end of the live wire at the bottom of the three-phase meter 6, the plug-in probe 42 exposed at the bottom of the insulator 41 is in an exposed state. At this time, by covering the part of the plug-in probe 42 exposed on the insulator 41 with the sealing cover 5, the plug-in probe 42 can be effectively protected.

[0051] like Figure 2As shown, when the output terminal 4 is connected to the live wire output terminal at the top of the three-phase meter, the insertion probe 42 exposed at the bottom of the insulator 41 is inserted into the live wire output terminal at the top of the three-phase meter 6. In this case, the insertion probe 42 exposed at the top of the insulator 41 is in an exposed state. At this time, by covering the part of the insertion probe 42 exposed by the insulator 41 with the encapsulation cover 5, the insertion probe 42 can be effectively protected, preventing dust, impurities or other external factors from contaminating or damaging the insertion probe 42. The design of the encapsulation cover 5 not only extends the service life of the insertion probe, but also improves the reliability and stability of the connection structure. At the same time, when a plugging operation is required, the encapsulation cover 5 can be easily opened without affecting normal use.

[0052] In some other embodiments, the insulator 31 of the power input terminal 3 is provided with a first identification mark and / or the insulator 41 of the power output terminal 4 is provided with a second identification mark. These identification marks help operators quickly distinguish between different terminals, avoiding errors during wiring. This marking design significantly improves the accuracy and efficiency of wiring, reduces the risk of verification failure or equipment damage due to wiring errors, and also facilitates the maintenance and inspection of the verification equipment. Furthermore, the first identification mark and / or the second identification mark are made of reflective material. Designing the first identification mark and / or the second identification mark to be made of reflective material provides better visibility in low-light environments. Reflective material reflects light under illumination, making the markings more conspicuous and further improving the operator's identification efficiency in different environments, ensuring the smooth progress of verification work. This design is particularly practical in low-light verification scenarios.

[0053] In summary, the power connection structure of the three-phase meter calibration equipment provided by this utility model breaks through the limitations of traditional fixed wiring structures by designing the power input and output terminals to be detachably installed on the fixed frame. This design gives the calibration equipment extremely high flexibility and adaptability, allowing it to quickly adjust the terminal layout according to the position of the live wire input and output terminals of the three-phase meter (whether located on the same side or opposite sides), thus perfectly matching different types of meters. It not only solves the problems of poor versatility and difficult wiring caused by the fixed wiring structure of existing calibration equipment, but also significantly improves the compatibility and practicality of the calibration equipment, greatly simplifies the wiring operation in the calibration process, reduces the risk of calibration failure due to wiring errors, and provides a more efficient and reliable solution for meter calibration work.

[0054] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A power connection structure for a three-phase electricity meter calibration device, comprising a mounting frame, an input terminal, and an output terminal, wherein the input terminal and the output terminal are electrically connected, characterized in that, At least one of the power input terminal and the power output terminal can be detachably installed on the mounting bracket.

2. The power connection structure of the three-phase meter calibration device according to claim 1, characterized in that, The power input terminal and the power output terminal include an insulator and a plug probe formed on the insulator, and the insulator is detachably mounted on the mounting bracket.

3. The power connection structure of the three-phase meter calibration device according to claim 2, characterized in that, The insulator is provided with a limiting notch, and the fixing frame is provided with a detachable limiting rod, which is locked in place with the limiting notch.

4. The power connection structure of the three-phase meter calibration device according to claim 3, characterized in that, The mounting interface of the limiting rod and / or the limiting notch is provided with a damping element.

5. The power connection structure of the three-phase meter calibration device according to claim 3, characterized in that, The number of limiting rods is at least two, and the number of limiting notches on the insulator is the same as the number of limiting rods.

6. The power connection structure of the three-phase meter calibration device according to claim 2, characterized in that, The insertion probe is exposed at the top and / or bottom of the insulator.

7. The power connection structure of the three-phase meter calibration device according to claim 2, characterized in that, The power input terminal and the power output terminal also include terminals formed in the insulator.

8. The power connection structure of the three-phase meter calibration device according to claim 2, characterized in that, The insulator of the power input terminal is provided with a first identification mark and / or the insulator of the power output terminal is provided with a second identification mark.

9. The power connection structure of the three-phase meter calibration device according to claim 8, characterized in that, The first identification mark and / or the second identification mark are made of reflective material.

10. The power connection structure of the three-phase meter calibration device according to claim 2, characterized in that, It also includes a cover that covers the portion of the insertion probe that is exposed outside the insulator.

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