Three-phase intelligent electric energy meter module precision calibration device

Abstract

The utility model relates to the technical field of electric energy meter calibration, and especially relates to a three-phase intelligent electric energy meter module precision calibration device. According to the technical scheme, the precision calibration piece comprises a sealing cover, an insertion block, an insertion box and an electromagnet, the sealing cover is rotationally connected with an upper cover through a rotating shaft, the side portion of the sealing cover is slidably connected with the insertion block, the electromagnet and the insertion box are fixedly installed in the upper cover, the insertion block is connected with the insertion box in an inserted mode, and the end of the electromagnet faces the insertion block; two butt joint assemblies connected in parallel with a standard electric energy meter are arranged in the upper cover. After the electric energy meter is powered off, the electromagnet loses magnetic force, at the moment, the insertion block automatically moves downwards and is separated from the insertion box due to the gravity of the insertion block, the insertion box can be opened, the effect of rapid opening for detection and calibration is achieved, and the calibration efficiency is improved; and the sealing cover cannot be opened under the condition that the electric energy meter is not powered off, so that constructors are prevented from electric shock during precision calibration.

Description

Technical Field

[0001] The utility model relates to the technical field of electric energy meter calibration, in particular to a three-phase intelligent electric energy meter module precision calibration device. Background Art

[0002] A three-phase smart energy meter is an intelligent metering device that measures the energy consumption in a three-phase AC circuit. It samples the supply voltage and current in real time, processes the sampled signals using integrated circuits, converts them into pulse outputs that are proportional to the energy, and ultimately displays the pulses as electricity consumption.

[0003] Energy meter module accuracy calibration uses a high-precision standard energy meter as a reference. The three-phase smart energy meter being calibrated is connected to the standard meter in the same circuit. By comparing the metering results of the two under the same load conditions, the error of the calibrated energy meter is calculated.

[0004] However, when the energy meter to be tested is connected to a standard energy meter, the outer shell of the energy meter to be tested needs to be completely disassembled before the energy meter to be tested and the standard energy meter can be connected in parallel, which makes it inconvenient to disassemble and assemble the energy meter to be tested. Utility Model Content

[0005] The purpose of the utility model is to solve the problem in the background technology that the detection of electric energy meters requires the complete disassembly of the shell, which is inconvenient, and to propose a three-phase intelligent electric energy meter module precision calibration device.

[0006] The technical solution of the utility model is: a three-phase smart electric energy meter module precision calibration device, comprising a bottom shell, the side of the bottom shell is fixedly connected to the upper cover by screws, and the side of the upper cover is fixedly mounted with a display screen;

[0007] The precision calibration component includes a closure cover, an insert block, an insert box, and an electromagnet. The closure cover is rotatably connected to the upper cover via a rotating shaft. The side of the closure cover is slidably connected to the insert block. The electromagnet and the insert box are fixedly installed inside the upper cover. The insert block is plugged into the insert box, and the end of the electromagnet faces the insert block.

[0008] Two docking assemblies of a parallel standard electric energy meter are arranged inside the upper cover, and a switch is fixedly installed on the front of the upper cover.

[0009] Optionally, two electromagnets are provided, located on the left and right sides of the plug-in box respectively. The electromagnet includes an iron core and an inner wire. The end of the iron core is fixedly connected to the upper cover, the inner wire is wound around the iron core, and the ends of the two inner wires are connected to the electric energy meter.

[0010] Optionally, expansion plates are fixedly mounted on both sides of the insert block, and the expansion plates are made of one of iron sheets, cobalt sheets, or nickel sheets, with the ends of the iron core facing the expansion plates.

[0011] Optionally, when the plug-in block is fully inserted into the plug-in box, there is a distance between the expansion board and the iron core.

[0012] Optionally, an insulating box is fixedly mounted on the side of the upper cover, and the insulating box separates the iron core, the inner conductor and the upper cover.

[0013] Optionally, a docking assembly is provided in the insulating box, and the docking assembly includes a mounting plate, a metal conductive sheet and a clamping arc opening. Both ends of the mounting plate are fixedly connected to the insulating box, the metal conductive sheet is fixedly installed on the side of the mounting plate, and a clamping arc opening is opened in the middle of the metal conductive sheet.

[0014] Optionally, four metal conductive sheets are provided, two in a group, and in one group, an end of one metal conductive sheet is electrically connected to an inner conductor, and an end of another metal conductive sheet is connected to an external wire.

[0015] Compared with the prior art, this application has at least one of the following beneficial technical effects:

[0016] When the electric energy meter is powered off, the electromagnet loses its magnetic force, and the gravity of the plug-in block causes it to automatically move downward and detach from the plug-in box, so that the plug-in box can be opened, achieving the effect of rapid opening for detection and calibration, thereby improving calibration efficiency.

[0017] Furthermore, the precision calibration part is shielded by the closed cover. When current exists on the electric energy meter, the electromagnet formed by the iron core and the inner wire has magnetic force, which uses the magnetic force to attract the plug to move upward and insert it into the plug box, thereby fixing the position of the closed cover to protect the electric energy meter. Therefore, the closed cover cannot be opened when the electric energy meter is not powered off, which prevents construction workers from being electrocuted during accuracy calibration.

[0018] Furthermore, two sets of metal conductive sheets are used to clamp the two wires of the standard electric energy meter respectively, so that the standard electric energy meter and the electric energy meter to be tested are connected in parallel for detection, and the standard electric energy meter wires are fixedly clamped using the clamping arc to calibrate the electric energy meter. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the overall structure of an embodiment of the present invention is given;

[0020] Figure 2 A schematic diagram of an open state of a closure cover structure according to an embodiment of the present invention is provided;

[0021] Figure 3 for Figure 2 A schematic diagram of the enlarged structure of the metal conductive sheet in part A;

[0022] Figure 4 This is a schematic diagram of the plug-in box structure.

[0023] Figure numerals: 1. bottom shell; 2. upper cover; 3. display screen; 4. precision calibration part; 41. closing cover; 42. insulating box; 43. plug-in block; 44. expansion board; 45. iron core; 46. inner wire; 47. plug-in box; 5. docking assembly; 51. mounting plate; 52. metal conductive sheet; 53. clamping arc opening; 6. switch. DETAILED DESCRIPTION

[0024] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention.

[0026] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0029] Example 1

[0030] This embodiment proposes a three-phase smart energy meter module precision calibration device, such as Figure 1As shown, it includes a bottom shell 1, the side of the bottom shell 1 is fixedly connected to the upper cover 2 by screws, and the side of the upper cover 2 is fixedly installed with a display screen 3, which displays the current status;

[0031] Two docking assemblies 5 of parallel standard electric energy meters are arranged inside the upper cover 2, and a switch 6 is fixedly mounted on the front of the upper cover 2. The flow of the wires at the docking assembly 5 is disconnected by the switch 6 to cut off the power.

[0032] like Figure 2 and 4 As shown, a precision calibration component 4 is provided on the side of the upper cover 2. The precision calibration component 4 includes a closing cover 41, an insert block 43, an insert box 47, and an electromagnet. The closing cover 41 is rotatably connected to the upper cover 2 via a rotating shaft. The side of the closing cover 41 is slidably connected to the insert block 43. The electromagnet and the insert box 47 are fixedly installed inside the upper cover 2. The insert block 43 is plugged into the insert box 47, and the end of the electromagnet faces the insert block 43.

[0033] Two electromagnets are provided, which are respectively located on the left and right sides of the plug box 47. The electromagnet includes an iron core 45 and an inner wire 46. The end of the iron core 45 is fixedly connected to the upper cover 2. The inner wire 46 is wound around the iron core 45. The closing cover 41 is closed by rotating it. Since there is current on the inner wire 46, the electromagnet formed by the iron core 45 and the inner wire 46 has magnetic force, which uses the magnetic force to attract the plug block 43 to move it upward and insert it into the plug box 47, thereby fixing the position of the closing cover 41 to protect the electric energy meter. Therefore, the closing cover 41 cannot be opened when the electric energy meter is not powered off, thereby protecting the construction personnel.

[0034] After the electric energy meter is powered off, the weight of the plug 43 automatically moves downward and separates from the plug box 47 , so that the plug box 47 can be opened.

[0035] like Figure 2 and 4 As shown, the ends of the two inner conductors 46 are connected to the energy meter. Extension plates 44 are fixedly mounted on both sides of the plug 43. Extension plates 44 are made of one of iron, cobalt, or nickel sheets. The end of the iron core 45 faces the extension plates 44. The extension plates 44 serve as an extension to allow the plug 43 to be attracted by the electromagnet. When the plug 43 is fully inserted into the insertion box 47, a gap exists between the extension plates 44 and the iron core 45, preventing contact and electrical conduction between the extension plates 44 and the iron core 45.

[0036] An insulating box 42 is fixedly mounted on the side of the upper cover 2, separating the iron core 45, the inner conductor 46, and the upper cover 2. The insulating box 42 provides insulation and isolates the magnetic force, preventing the electromagnet formed by the iron core 45 and the inner conductor 46 from affecting the electric energy meter and reducing its accuracy.

[0037] In this embodiment, the precision calibration part is shielded by the closing cover 41. When there is current on the electric energy meter, the electromagnet formed by the iron core 45 and the inner wire 46 has magnetic force, which uses the magnetic force to attract the plug block 43 to move it upward and insert it into the plug box 47, thereby fixing the position of the closing cover 41 to protect the electric energy meter. Therefore, the closing cover 41 cannot be opened when the electric energy meter is not powered off, which prevents construction workers from being electrically shocked during calibration.

[0038] Example 2

[0039] Based on Example 1, this embodiment proposes a three-phase smart energy meter module precision calibration device, such as Figure 3 As shown, a docking assembly 5 is provided in the insulating box 42, and the docking assembly 5 includes a mounting plate 51, a metal conductive sheet 52 and a clamping arc opening 53. Both ends of the mounting plate 51 are fixedly connected to the insulating box 42, the metal conductive sheet 52 is fixedly installed on the side of the mounting plate 51, and a clamping arc opening 53 is opened in the middle of the metal conductive sheet 52.

[0040] Four metal conductive sheets 52 are provided, two in a group. In each group, one metal conductive sheet 52 has its end electrically connected to the internal conductor 46, while the other metal conductive sheet 52 has its end connected to the external wire. The two groups of metal conductive sheets 52 each clamp the two conductors of a standard electric energy meter, and the conductors are moved to the clamping arc 53 for securement.

[0041] In this embodiment, two sets of metal conductive sheets 52 are used to clamp two wires of the standard electric energy meter respectively, so that the standard electric energy meter and the electric energy meter to be tested are connected in parallel for detection, and the clamping arc 53 is used to fix the wires of the standard electric energy meter to clamp them, so as to calibrate the electric energy meter.

[0042] The above specific embodiments are merely several optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above embodiments, those skilled in the art may make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A three-phase smart energy meter module precision calibration device, characterized in that: include: A bottom shell (1), the side of the bottom shell (1) is fixedly connected to the upper cover (2) by screws, and the side of the upper cover (2) is fixedly mounted with a display screen (3); The precision calibration component (4) comprises a closing cover (41), an insert block (43), an insert box (47) and an electromagnet, wherein the closing cover (41) is rotatably connected to the upper cover (2) via a rotating shaft, the side of the closing cover (41) is slidably connected to the insert block (43), the electromagnet and the insert box (47) are fixedly installed inside the upper cover (2), the insert block (43) is plugged into the insert box (47), and the end of the electromagnet faces the insert block (43); Two docking assemblies (5) of parallel standard electric energy meters are arranged inside the upper cover (2), and a switch (6) is fixedly installed on the front of the upper cover (2).

2. The three-phase smart energy meter module precision calibration device according to claim 1, characterized in that: Two electromagnets are provided, respectively located on the left and right sides of the plug-in box (47). The electromagnets include an iron core (45) and an inner wire (46). The end of the iron core (45) is fixedly connected to the upper cover (2). The inner wire (46) is wound around the iron core (45). The ends of the two inner wires (46) are connected to the electric energy meter.

3. The three-phase smart energy meter module precision calibration device according to claim 2, characterized in that: An expansion plate (44) is fixedly mounted on both sides of the insert block (43). The expansion plate (44) is made of one of an iron sheet, a cobalt sheet or a nickel sheet. The end of the iron core (45) faces the expansion plate (44).

4. The three-phase smart energy meter module precision calibration device according to claim 3, characterized in that: When the inserting block (43) is completely inserted into the inserting box (47), a distance exists between the expansion plate (44) and the iron core (45).

5. The three-phase smart energy meter module precision calibration device according to claim 2, characterized in that: An insulating box (42) is fixedly mounted on the side of the upper cover (2), and the insulating box (42) separates the iron core (45), the inner conductor (46) and the upper cover (2).

6. The three-phase smart energy meter module precision calibration device according to claim 5, characterized in that: A docking assembly (5) is provided in the insulating box (42), and the docking assembly (5) comprises a mounting plate (51), a metal conductive sheet (52) and a clamping arc opening (53). Both ends of the mounting plate (51) are fixedly connected to the insulating box (42), the metal conductive sheet (52) is fixedly mounted on the side of the mounting plate (51), and the clamping arc opening (53) is provided in the middle of the metal conductive sheet (52).

7. The three-phase smart energy meter module precision calibration device according to claim 6, characterized in that: Four metal conductive sheets (52) are provided, two forming a group, and in one group, the end of one metal conductive sheet (52) is electrically connected to the inner wire (46), and the end of another metal conductive sheet (52) is connected to the external wire.

Images