Three-phase ammeter performance detection device

Abstract

The utility model discloses a three-phase electric meter performance detection device, which belongs to the technical field of electric meter detection and comprises a shell. The first detection mechanism is arranged on the shell, and the first detection mechanism is used for being correspondingly connected with a first wiring terminal of the electric meter; the second detection mechanism is arranged on the shell, and the second detection mechanism is used for being correspondingly connected with a second wiring terminal of the electric meter; the third detection mechanism is arranged on the shell, and the third detection mechanism is used for being correspondingly connected with third wiring terminals of electricity meters of different specifications; and the two clamping mechanisms are detachably connected with the shell, the two clamping mechanisms are arranged at the two opposite ends of the shell respectively, and the clamping mechanisms are used for fixing the shell on the to-be-tested electric meter. According to the utility model, a plurality of ammeter specifications can be covered by one set of device, compatibility with a plurality of ammeter types is realized, the purchase and maintenance cost is reduced, and the production benefit is improved.

Description

Technical Field

[0001] This utility model relates to the field of electricity meter testing technology, and in particular to a three-phase electricity meter performance testing device. Background Technology

[0002] In recent years, my country's economy has maintained stable growth, and electricity, as a core energy source for modern society, has become increasingly important. In the residential electricity sector, with the continuous improvement of residents' living standards and the increasing prevalence of various electrical appliances, household electricity demand has shown a sustained upward trend. At the same time, the country is actively promoting the construction of smart grids, aiming to improve the stability and intelligence of power supply. This has placed higher standards on the production capacity and quality management capabilities of electricity meter manufacturers. Among the many smart meter products, three-phase smart meters have stood out in the market due to their advantages such as accurate metering, diverse functions, and stable communication, becoming the most widely used type of smart meter currently.

[0003] As user demands for the functions and performance of electricity meters become increasingly diverse, electricity meter manufacturers are launching a wide variety of meter models to meet market needs. During the post-factory testing phase, each meter model requires a dedicated testing device, which increases hardware investment and production costs. Utility Model Content

[0004] The purpose of this utility model is to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes a three-phase electricity meter performance testing device that can be adapted to the performance testing of various models of three-phase electricity meters, thereby reducing production costs and improving production efficiency.

[0005] The three-phase electricity meter performance testing device according to an embodiment of the present invention includes a housing; a first detection mechanism disposed on the housing and used to connect correspondingly to the first terminal of the electricity meter; a second detection mechanism disposed on the housing and used to connect correspondingly to the second terminal of the electricity meter; a third detection mechanism disposed on the housing and used to connect correspondingly to the third terminal of electricity meters of different specifications; and two clamping mechanisms, both of which are detachably connected to the housing and are respectively disposed at opposite ends of the housing, used to fix the housing to the electricity meter to be tested.

[0006] The three-phase electricity meter performance testing device according to the present utility model has at least the following beneficial effects: the first detection mechanism is connected to the first terminal block, the second detection mechanism is connected to the second terminal block, the third detection mechanism is adapted to the spacing difference of the third terminal block of different specifications, and the two detachable clamping mechanisms are flexibly adjusted according to the size of the electricity meter shell, so that the shell can be stably installed on electricity meters of different sizes. One device can cover multiple electricity meter specifications, realize compatibility with four types of electricity meters, thereby reducing the number of dedicated testing equipment, reducing procurement and maintenance costs, and improving production efficiency.

[0007] According to some embodiments of this utility model, multiple wire connection holes are provided on the housing. The wire connection holes are connected in series with the first detection mechanism, the second detection mechanism and the third detection mechanism through a circuit. The wire connection holes are used to support the wired detection method of the electricity meter.

[0008] According to some embodiments of the present invention, a positioning post is provided on the housing, the positioning post is located on one side of the first detection mechanism, and the positioning post is configured to be embedded in the structural notch of the meter.

[0009] According to some embodiments of the present invention, the clamping mechanism includes a pair of clamping arms hinged by torsion springs, one clamping arm being fixed to the housing, the other clamping arm being movably connected to the first clamping arm, and the other clamping arm being provided with a relief groove, which is configured to cooperate with a limiting protrusion on the housing.

[0010] According to some embodiments of the present invention, the first detection mechanism includes a plurality of first probes, which are movably disposed in the housing. The number of first probes is the same as the number of first terminals of the meter. Each first terminal corresponds to one first probe, and the first probe is configured to be connected to the corresponding first terminal.

[0011] According to some embodiments of the present invention, the second detection mechanism includes a second probe that is movably disposed in the housing, and the second probe corresponds to the second terminal of the meter. The second probe is configured to be connected to the corresponding second terminal.

[0012] According to some embodiments of the present invention, the second detection mechanism includes two detection components, both of which are disposed on the housing, with one detection component disposed on one side of the other detection component, and the detection components are configured to be connected to a third terminal block.

[0013] According to some embodiments of the present invention, the detection component includes a plurality of third probes, which are movably disposed in the housing. The number of third probes is the same as the number of third terminals. Each third terminal corresponds to one third probe, and the third probe is configured to be connected to the corresponding third terminal.

[0014] According to some embodiments of this utility model, the third probe is provided with a post, which is located at the end of the third probe away from the housing. The post is used to abut against the insulation structure of the meter under test and the third terminal.

[0015] According to some embodiments of this utility model, the housing is provided with multiple indicator lights, which are used to help users identify the operating status of the equipment during the meter performance testing process.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0018] Figure 1 This is a schematic diagram of the structure of the three-phase electricity meter performance testing device according to an embodiment of the present invention;

[0019] Figure 2 for Figure 1 A schematic diagram of the structure of the electric meter;

[0020] Figure 3 This is a schematic diagram of the operation of the three-phase electricity meter performance testing device according to an embodiment of the present invention;

[0021] Figure 4 for Figure 1 A structural diagram from another angle;

[0022] Figure 5 for Figure 1 A schematic diagram of the structure at point A in the middle.

[0023] Figure label:

[0024] Housing 100, positioning post 110, indicator light 120;

[0025] First detection mechanism 200, first probe 210;

[0026] Second detection mechanism 300, second probe 310;

[0027] The third detection mechanism 400, the detection component 410, the third probe 420, and the column head 421;

[0028] Clamping mechanism 500, clamping arm 510, clearance groove 520,

[0029] Plug socket 600, power switch 610, charging port 620;

[0030] First terminal 10, second terminal 20, third terminal 30, structural notch 40, limiting protrusion 50, insulating protrusion 60. Detailed Implementation

[0031] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If the description mentions "first" or "second," it is merely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features or the sequential relationship between indicated technical features.

[0033] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0034] refer to Figures 1 to 5 This embodiment discloses a three-phase meter performance testing device.

[0035] like Figures 1 to 5 As shown, the three-phase electricity meter performance testing device includes a housing 100; a first detection mechanism 200, which is disposed on the housing 100 and is used to connect to the first terminal 10 of the electricity meter; a second detection mechanism 300, which is disposed on the housing 100 and is used to connect to the second terminal 20 of the electricity meter; a third detection mechanism 400, which is disposed on the housing 100 and is used to connect to the third terminal 30 of different specifications of electricity meters; and two clamping mechanisms 500, both of which are detachably connected to the housing 100 and are respectively disposed at opposite ends of the housing 100, and are used to fix the housing 100 to the electricity meter under test.

[0036] like Figure 1As shown, the housing 100 is provided with a first detection mechanism 200, a second detection mechanism 300, and a third detection mechanism 400. The second detection mechanism 300 and the third detection mechanism 400 are both located below the first detection mechanism 200, and the second detection mechanism 300 is located to one side of the third detection mechanism 400. Figure 2 As shown, Figure 2 This is a structural diagram of a Type I or Type II electricity meter. It should be noted that both types of terminals are provided, positioned along the left-right axis on the meter, with one type of terminal located above the other. Based on the different spacing between the lower terminals, the meters are classified into Type I and Type II meters. Furthermore, Type I and Type II meters each have two different meter casing sizes, primarily differing in their left-right external dimensions, resulting in a total of four different types of meters. Therefore, as follows... Figure 3 As shown, the first detection mechanism 200 is connected to the first terminal 10, the second detection mechanism 300 is connected to the second terminal 20, and the third detection mechanism 400 is adapted to the spacing difference of the third terminal 30 of different specifications. The two detachable clamping mechanisms 500 are flexibly adjusted according to the size of the meter housing, so that the housing 100 can be stably installed on meters of different sizes. One set of devices can cover multiple meter specifications, achieving compatibility with four types of meters, thereby reducing the number of dedicated testing equipment, reducing procurement and maintenance costs, and improving production efficiency.

[0037] In this specific embodiment, the first type of meter is a current transformer meter, and the second type of meter is a direct-through meter.

[0038] In some specific embodiments of this utility model, multiple wiring terminals 600 are provided on the housing 100. The wiring terminals 600 are connected in series with the first detection mechanism 200, the second detection mechanism 300, and the third detection mechanism 400 via a circuit. The wiring terminals 600 are used to support the wired detection method of the electricity meter. Figure 4 As shown, two wiring ports 600 are integrated on the housing 100, providing an expansion interface for wired testing of the meter and accommodating various testing needs. These ports are connected to the internal testing circuit, ensuring signal transmission stability and facilitating quick connection of different testing equipment by testing personnel. They also support diverse testing methods, thereby enhancing the flexibility and functionality of the testing device.

[0039] Furthermore, a power switch 610 and a charging port 620 are also provided on one side of the multiple plug-in ports 600 to meet the needs of wireless detection. Specifically, the power switch 610 and the charging port 620 are integrated on the side of the plug-in ports 600, forming a centralized functional layout. The power switch 610 can quickly cut off the power supply to the detection device to ensure operational safety, and the charging port 620 supports replenishing the battery in the device, avoiding frequent battery replacements.

[0040] In some specific embodiments of this utility model, a positioning post 110 is provided on the housing 100. The positioning post 110 is located on one side of the first detection mechanism 200 and is configured to be embedded in the structural notch 40 of the meter.

[0041] like Figure 1 As shown, a positioning post 110 is provided on the housing 100. The positioning post 110 is located on one side of the first detection mechanism 200, and the positioning post 110 is configured to be embedded in the structural notch 40 of both types of meters. Thus, as... Figure 3 As shown, during the testing process, the positioning post 110 only needs to be inserted into the structural notch 40 of the meter under test, and then the clamping mechanism 500 is adjusted according to the positioning width of the housing 100. At the same time, the housing 100 can be quickly fixed to the meter while the first detection mechanism 200, the second detection mechanism 300 and the third detection mechanism 400 are docked with the meter under test.

[0042] In some specific embodiments of this utility model, the clamping mechanism 500 includes a pair of clamping arms 510 hinged by torsion springs. One clamping arm 510 is fixed on the housing 100, and the other clamping arm 510 is movably connected to the first clamping arm 510. The other clamping arm 510 is provided with a relief groove 520, which is configured to cooperate with the limiting protrusion 50 on the housing 100.

[0043] like Figure 2 As shown, the meter has limiting protrusions 50 at both ends. The clamping mechanism 500 adopts a pair of clamping arms 510 hinged by a torsion spring. One clamping arm 510 is fixed to the housing 100, and the other clamping arm 510 automatically clamps or releases through the elastic force of the torsion spring. During the clamping process, the clearance groove 520 on the other clamping arm 510 cooperates with the limiting protrusions 50 on the housing 100. As the clamping arm 510 opens and closes during the clamping process, for meters of different housing sizes, the clamping arm 510 can accurately align with the limiting protrusions 50 on both sides of the meter, thereby quickly positioning and firmly fixing meters of different sizes, avoiding displacement or loosening during the detection process.

[0044] In some specific embodiments of this utility model, the first detection mechanism 200 includes a plurality of first probes 210, which are movably disposed in the housing 100. The number of first probes 210 is the same as the number of first terminals 10 of the meter. Each first terminal 10 corresponds to one first probe 210, and the first probe 210 is configured to be connected to the corresponding first terminal 10.

[0045] like Figure 1 , Figure 2 and Figure 5 As shown, multiple first terminals 10 are arranged along the left-right direction. Correspondingly, eight first probes 210 are provided, each first probe 210 corresponding to one first terminal 10. Thus, the first probes 210 pass through the housing 100 and correspond one-to-one with the first terminals 10 of the meter. The first probes 210 can move slightly along the axial direction, adaptively adjusting their position when contacting the terminals to ensure a tight fit with the first terminals 10, achieving a stable electrical connection. This not only significantly improves the compatibility and reliability of the detection, but also adapts to minor terminal displacements or manufacturing errors without manual calibration, simplifying the operation process and reducing the risk of poor contact.

[0046] In some specific embodiments of this utility model, the second detection mechanism 300 includes a second probe 310, which is movably disposed within the housing 100. The second probe 310 corresponds to the second terminal 20 of the meter, and is configured to connect to the corresponding second terminal 20. For example... Figure 1 , Figure 2 and Figure 5 As shown, the second terminal 20 is located below the first terminal 10. It should be noted that the relative positions of the first terminal 10, the second terminal 20, and the structural notch 40 remain unchanged for different types and housing sizes of meters. Therefore, both type I and type II meters can be used with the same set of first probe 210, second probe 310, and positioning post 110. The second probe 310 passes through the housing 100 and corresponds to the second terminal 20 of the meter. The second probe 310 can move slightly axially, adaptively adjusting its position when contacting the terminal to ensure a tight fit with the first terminal 10 and achieve a stable electrical connection.

[0047] In some specific embodiments of this utility model, the second detection mechanism 300 includes two detection components 410, both of which are disposed on the housing 100. One detection component 410 is disposed on one side of the other detection component 410, and the detection component 410 is configured to be connected to the third terminal 30.

[0048] In some specific embodiments of this utility model, the detection component 410 includes a plurality of third probes 420, which are movably disposed in the housing 100. The number of third probes 420 is the same as the number of third terminals 30. Each third terminal 30 corresponds to one third probe 420, and the third probe 420 is configured to be connected to the corresponding third terminal 30.

[0049] like Figure 1 and Figure 5 As shown, one detection component 410 is located above the other detection component 410, and the two detection components 410 are offset from each other. It should be noted that, as... Figure 2 As shown, multiple third terminals 30 extend in the left-right direction and are spaced apart by insulating protrusions 60. Therefore, during the detection process, if the object being detected is a first type of meter, the multiple third probes 420 corresponding to the first type of meter can be connected one-to-one with the third terminals 30, while the third probes 420 of another detection component 410 abut against the insulating protrusions 60 of the first type of meter. If the object being detected is a second type of meter, the multiple third probes 420 corresponding to the second type of meter can be connected one-to-one with the third terminals 30, and similarly, the third probes 420 of another detection component 410 abut against the insulating protrusions 60 of the second type of meter.

[0050] Specifically, such as Figure 3 and Figure 5 As shown, each detection component 410 is provided with three third probes 420. The three third probes 420 are arranged in the left and right directions, and the two sets of detection components 410 are staggered in the left and right directions. When the object being detected is a first type of electricity meter, the three third probes 420 located at the top are connected to the three third terminals 30 one by one, and the three third probes 420 located at the bottom abut against the insulating protrusions 60 arranged between the three third terminals 30 in sequence. Similarly, when the object being detected is a second type of electricity meter, the three third probes 420 located at the bottom are connected to the three third terminals 30 one by one, and the three third probes 420 located at the top abut against the insulating protrusions 60 arranged between the three third terminals 30 in sequence.

[0051] In some specific embodiments of this utility model, the third probe 420 is provided with a post 421, which is located at the end of the third probe 420 away from the housing 100. The post 421 is used to abut against the insulation structure of the meter under test and the third terminal 30.

[0052] like Figure 5As shown, the head 421 is cylindrical with a diameter larger than that of the needle. The third probe 420 has an additional head 421 structure at its end, which allows it to better fit the corresponding third terminal 30 when contacting the meter. This ensures a stable electrical connection between the third probe 420 and the terminal, and also ensures that the third probe 420 can accurately abut against the insulating protrusion when idle, preventing over-insertion or offset of the third probe 420. This achieves accurate docking in complex wiring environments, avoids short-circuit risks, and improves detection efficiency and operational error tolerance.

[0053] In some specific embodiments of this utility model, the housing 100 is provided with multiple indicator lights 120, which are used to help users identify the operating status of the equipment during the meter performance testing process.

[0054] like Figure 3 As shown, there are multiple indicator lights 120, which are divided into two large groups. One group of indicator lights 120 is located at the left end of the rear end of the housing 100, and the other group is located at the right end of the rear end of the housing 100. One large group of indicator lights 120 has three subgroups, each subgroup corresponding to one of the three phases of the three-phase meter. Each subgroup has two indicator lights 120: one indicating a successful connection and the other indicating a failed connection. The other large group of indicator lights 120 has four indicator lights 120 arranged horizontally. These four indicator lights are used to indicate power status, communication activation, fault alarm, and detection completion, respectively.

[0055] In some specific embodiments of this utility model, during the testing process, the positioning post 110 is inserted into the structural notch 40 of the meter under test, and the clearance grooves 520 on the clamping arms 510 on both sides of the housing 100 cooperate with the limiting protrusions 50 on the housing 100 respectively. At this time, each first probe 210 corresponds one-to-one with the corresponding first terminal 10 on the meter under test, each second probe 310 corresponds one-to-one with the corresponding second terminal 20 on the meter under test, and each second probe 310 corresponds one-to-one with the corresponding second terminal 20 on the meter under test, so as to achieve a stable electrical connection.

[0056] Align the positioning pin 110 with the structural notch 40 on the casing of the meter under test, insert it, and initially fix the device in position. At the same time, press the clamping arms 510 on both sides of the casing 100 so that the clearance grooves 520 on the clamping arms 510 automatically engage with the limiting protrusions 50 on the meter, ensuring that the device is firmly attached to the meter. After being clamped in place, all the first probes 210, second probes 310, and third probes 420 are precisely aligned with the first, second, and third terminals 30 of the meter, respectively. The self-adaptive floating structure of the probes achieves tight contact, forming a stable electrical connection.

[0057] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A three-phase electricity meter performance testing device, characterized in that, include: Casing (100); A first detection mechanism (200) is disposed on the housing (100) and is used to connect to the first terminal (10) of the meter. The second detection mechanism (300) is disposed on the housing (100) and is used to connect to the second terminal (20) of the meter. The third detection mechanism (400) is disposed on the housing (100) and is used to connect to the third terminal (30) of different specifications of electricity meters. Two clamping mechanisms (500) are provided, both of which are detachably connected to the housing (100). The two clamping mechanisms (500) are respectively located at opposite ends of the housing (100). The clamping mechanisms (500) are used to fix the housing (100) on the meter to be tested.

2. The three-phase meter performance testing device according to claim 1, characterized in that, Multiple wire connection holes (600) are provided on the housing (100). The wire connection holes (600) are connected in series with the first detection mechanism (200), the second detection mechanism (300) and the third detection mechanism (400) through a circuit. The wire connection holes (600) are used to support the wired detection method of the electricity meter.

3. The three-phase meter performance testing device according to claim 1, characterized in that, The housing (100) is provided with a positioning post (110), which is located on one side of the first detection mechanism (200) and is configured to be embedded in the structural notch (40) of the meter.

4. The three-phase meter performance testing device according to claim 1, characterized in that, The clamping mechanism (500) includes a pair of clamping arms (510) hinged by torsion springs. One clamping arm (510) is fixed to the housing (100), and the other clamping arm (510) is movably connected to the first clamping arm (510). The other clamping arm (510) is provided with a relief groove (520), which is configured to cooperate with a limiting protrusion (50) on the housing (100).

5. The three-phase meter performance testing device according to claim 1, characterized in that, The first detection mechanism (200) includes a plurality of first probes (210), which are movably disposed in the housing (100). The number of the first probes (210) is the same as the number of the first terminals (10) of the meter. Each first terminal (10) corresponds to one first probe (210), and the first probe (210) is configured to be connected to the corresponding first terminal (10).

6. The three-phase meter performance testing device according to claim 1, characterized in that, The second detection mechanism (300) includes a second probe (310) which is movably disposed in the housing (100) and corresponds to the second terminal (20) of the meter. The second probe (310) is configured to be connected to the corresponding second terminal (20).

7. The three-phase meter performance testing device according to claim 1, characterized in that, The second detection mechanism (300) includes two detection components (410), both of which are disposed on the housing (100), one of which is disposed on one side of the other, and the detection component (410) is configured to be connected to a third terminal (30).

8. The three-phase meter performance testing device according to claim 7, characterized in that, The detection component (410) includes a plurality of third probes (420), which are movably disposed in the housing (100). The number of the third probes (420) is the same as the number of the third terminals (30). Each third terminal (30) corresponds to one of the third probes (420), and the third probes (420) are configured to be connected to the corresponding third terminal (30).

9. The three-phase meter performance testing device according to claim 8, characterized in that, The third probe (420) is provided with a head (421), which is located at the end of the third probe (420) away from the housing (100). The head (421) is used to abut against the insulation structure of the meter under test and the third terminal (30).

10. The three-phase meter performance testing device according to claim 1, characterized in that, The housing (100) is provided with multiple indicator lights (120), which are used to help users identify the operating status of the equipment during the meter performance testing process.

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