Constant magnetic field testing device for electric energy meter

Abstract

The utility model discloses a constant magnetic field testing device for an electric energy meter, which comprises a base, an annular turntable, a placement seat, a stand column and an XYZ three-axis moving mechanism, and is characterized in that the annular turntable is rotatably arranged on the base; the placing seat is arranged on the base and corresponds to the hollow area of the annular turntable, and a conduction structural member is arranged on the placing seat; the stand column is arranged on the annular rotating disc, an XZ two-axis moving mechanism is arranged on the stand column, and a first permanent magnet is arranged on the XZ two-axis moving mechanism; the XYZ three-axis moving mechanism is arranged on the annular rotating disc, and a second permanent magnet is arranged on the XYZ three-axis moving mechanism. The constant magnetic field testing device for the electric energy meter is simple and novel in structure, small in size and convenient to store; the XZ two-axis moving mechanism and the XYZ three-axis moving mechanism are controlled in a manual mode, operation is easy and convenient, use of electronic components is greatly reduced, meanwhile, the manual control can determine the area, subjected to strong magnetic interference, of the electric meter through repeated adjustment, and therefore a reliable basis is provided for follow-up targeted improvement.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary tooling for magnetic interference testing of electric energy meters, and particularly relates to a constant magnetic field testing device for electric energy meters. Background Art

[0002] Due to the complexity of the power consumption environment, some electric energy meters will work under the interference of strong magnetic fields. Such an environment may cause measurement errors in the electric energy meters. In order to accurately, reliably and conveniently detect the constant magnetic field immunity of the electric energy meters, so as to carry out targeted improvement on the electric energy meters in the later stage, and thus ensure that the electronic electric energy meters can accurately measure under the influence of strong magnetic fields, special equipment is needed to implement this.

[0003] The Chinese utility model patent with the application number 202020250585.3 discloses a constant magnetic field device for testing the performance of electric energy meters. Although this device can conduct constant magnetic field tests on electric energy meters and detect the anti-interference ability of the electric energy meters, its device volume is large, inconvenient to store, and the manufacturing cost is high. Summary of the Utility Model

[0004] The technical problem solved by the utility model is to provide a constant magnetic field testing device for electric energy meters with a small volume and low manufacturing cost.

[0005] In order to solve the above technical problem, the technical solution adopted by the utility model is: a constant magnetic field testing device for electric energy meters, including:

[0006] A base;

[0007] An annular turntable, which is rotatably arranged on the base;

[0008] A placement seat, which is arranged on the base and corresponds to the hollow area of the annular turntable, and a conduction structure member is arranged on the placement seat;

[0009] A column, which is arranged on the annular turntable, an XZ two-axis moving mechanism is arranged on the column, and a first permanent magnet is arranged on the XZ two-axis moving mechanism;

[0010] An XYZ three-axis moving mechanism, which is arranged on the annular turntable, and a second permanent magnet is arranged on the XYZ three-axis moving mechanism.

[0011] In one embodiment, the base is indirectly connected to the annular turntable through a thrust bearing.

[0012] In one embodiment, support feet are arranged at the bottom of the base, and a wire passing hole is arranged on the base, and the wire passing hole corresponds to the hollow area of the annular turntable.

[0013] In one embodiment, the annular turntable is provided with movable pins, and the base is provided with jacks that cooperate with the movable pins. The number of the movable pins is multiple.

[0014] In one embodiment, the number of the jacks is four, and the four jacks are evenly distributed around the central axis of the annular turntable; the column and the XYZ three-axis moving mechanism are arranged at an interval of 90° around the central axis of the annular turntable.

[0015] In one embodiment, an elastic member is further included. The elastic member contacts the movable pin and the annular turntable respectively to drive the movable pin to move towards the base.

[0016] In one embodiment, the first permanent magnet is detachably installed on the XZ two-axis moving mechanism.

[0017] In one embodiment, the second permanent magnet is detachably installed on the XYZ three-axis moving mechanism.

[0018] In one embodiment, the XZ two-axis moving mechanism includes a first screw drive assembly, a first movable block, a first gear-rack drive assembly and a first mounting block. The first screw drive assembly is arranged on the column in the vertical direction. The first movable block is in threaded drive connection with the first screw drive assembly and can be lifted and lowered along the first screw drive assembly. The first mounting block is slidably arranged relative to the first movable block. The sliding direction of the first mounting block is perpendicular to the lifting direction of the first movable block. The first gear-rack drive assembly connects the first mounting block and the first movable block. The first permanent magnet is installed on the first mounting block.

[0019] In one embodiment, the XYZ three-axis moving mechanism includes a second screw drive assembly, a second movable block, a third screw drive assembly, a third movable block, a second gear-rack drive assembly and a second mounting block. The second screw drive assembly is arranged on the annular turntable. The second movable block is in threaded drive connection with the second screw drive assembly. The third screw drive assembly is arranged on the second movable block. The third movable block is in threaded drive connection with the third screw drive assembly. The second mounting block is slidably arranged relative to the third movable block. The second gear-rack drive assembly connects the second mounting block and the third movable block. The second permanent magnet is installed on the second mounting block. The movement directions of the second movable block, the third movable block and the second mounting block are perpendicular to each other in pairs.

[0020] The beneficial effects of the present utility model are as follows: The constant magnetic field testing device for the electric energy meter has a simple and novel structure, is small in size, convenient for storage, and has a low manufacturing cost; the XZ two-axis moving mechanism and the XYZ three-axis moving mechanism are controlled manually, with simple operation and greatly reduced use of electronic components, which is conducive to reducing the manufacturing cost of the constant magnetic field testing device for the electric energy meter. At the same time, manual control can determine the area where the electric meter is strongly affected by magnetic interference through repeated adjustments, thus providing a reliable basis for subsequent targeted improvements. Brief Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following-described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0022] Figure 1 Structural Schematic of the Constant Magnetic Field Testing Device for the Electric Energy Meter in Embodiment 1 of the Present Utility Model Figure 1 ;

[0023] Figure 2 Structural Schematic of the Constant Magnetic Field Testing Device for the Electric Energy Meter in Embodiment 1 of the Present Utility Model Figure 2 ;

[0024] Figure 3 Working State Schematic Diagram of the Constant Magnetic Field Testing Device for the Electric Energy Meter in Embodiment 1 of the Present Utility Model.

[0025] Explanation of the Reference Numerals in the Drawings:

[0026] 1. Base; 11. Support Foot; 12. Wiring Hole;

[0027] 2. Ring-shaped Turntable; 21. Movable Bolt;

[0028] 3. Placing Seat; 31. Conductive Structural Member;

[0029] 4. Column;

[0030] 5. XZ Two-axis Moving Mechanism; 51. First Screw Drive Assembly; 52. First Movable Block; 53. First Gear Rack Drive Assembly; 54. First Mounting Block;

[0031] 6. XYZ Three-axis Moving Mechanism; 61. Second Screw Drive Assembly; 62. Second Movable Block; 63. Third Screw Drive Assembly; 64. Third Movable Block; 65. Second Gear Rack Drive Assembly; 66. Second Mounting Block;

[0032] 7. Second Permanent Magnet;

[0033] 8. Electric meter to be tested. Specific implementation manner

[0034] The realization of the purpose, functional features and advantages of the present utility model will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

[0035] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0036] It should be noted that if there are directional indications such as up, down, left, right, front, back,... in the embodiments of the present utility model, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indications will also change accordingly.

[0037] In addition, if there are descriptions such as "first", "second", etc. in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features.

[0038] In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel solutions. Taking "and / or" as an example, it includes the solution, or the solution, or the solution that satisfies both simultaneously. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0039] In this application, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] Embodiment 1

[0041] Please refer to Figures 1 to 3 , Embodiment 1 of the present utility model is: an electric energy meter constant magnetic field testing device, including a base 1, an annular turntable 2, a placement seat 3, a column 4 and an XYZ three-axis moving mechanism 6. The annular turntable 2 is rotatably arranged on the base 1; the placement seat 3 is arranged on the base 1 and corresponds to the hollow area of the annular turntable 2. The placement seat 3 is used to place the electric meter 8 to be tested. A conduction structure member 31 is arranged on the placement seat 3, and the conduction structure member 31 is used to energize the electric meter 8 to be tested. In this embodiment, the conduction structure member 31 is a conduction probe; the column 4 is arranged on the annular turntable 2, and an XZ two-axis moving mechanism 5 is arranged on the column 4. A first permanent magnet is arranged on the XZ two-axis moving mechanism 5. Driven by the XZ two-axis moving mechanism 5, the first permanent magnet can perform magnetic interference on various areas above the electric meter 8 to be tested; the XYZ three-axis moving mechanism 6 is arranged on the annular turntable 2, and a second permanent magnet 7 is arranged on the XYZ three-axis moving mechanism 6. With the cooperation of the XYZ three-axis moving mechanism 6 and the annular turntable 2, the second permanent magnet 7 can perform magnetic interference on various areas around the electric meter 8 to be tested.

[0042] To ensure that the annular turntable 2 can rotate smoothly, in this embodiment, the base 1 is indirectly connected to the annular turntable 2 through a thrust bearing.

[0043] To make the wiring of the electric energy meter constant magnetic field testing device more concise, preferably, support feet 11 are arranged at the bottom of the base 1. The support feet 11 can lift the base 1, facilitating the movement of the electric energy meter constant magnetic field testing device by personnel. At the same time, a wiring space can be formed below the base 1; a wiring hole 12 is arranged on the base 1, and the wiring hole 12 corresponds to the hollow area of the annular turntable 2. External cables can pass through the wiring hole 12 from below the base 1 and be connected to the conduction structure member 31.

[0044] To prevent the annular turntable 2 from rotating unexpectedly, movable pins 21 are arranged on the annular turntable 2, and jacks matching the movable pins 21 are arranged on the base 1. The number of the movable pins 21 is multiple.

[0045] In this embodiment, the number of the jacks is four, and the four jacks are evenly distributed around the central axis of the annular turntable 2; the column 4 and the XYZ three-axis moving mechanism 6 are arranged at an interval of 90° around the central axis of the annular turntable 2. In this way, the second permanent magnet 7 can accurately perform magnetic interference on the four sides of the electric meter 8 to be tested.

[0046] Preferably, the constant magnetic field test device for the electric energy meter further includes an elastic member, and the elastic member contacts the movable pin 21 and the annular turntable 2 respectively to drive the movable pin 21 to move towards the base 1. The movable pin 21 and the elastic member form an elastic pin structure, which is more convenient for testers to use. The elastic member can be a spring or the like.

[0047] As a preferred embodiment, the first permanent magnet is detachably mounted on the XZ two-axis moving mechanism 5, and the second permanent magnet 7 is detachably mounted on the XYZ three-axis moving mechanism 6. Testers can install the first permanent magnet / second permanent magnet 7 with different magnetic force magnitudes according to actual test requirements, which is beneficial to improving the versatility of the constant magnetic field test device for the electric energy meter.

[0048] Specifically, the XZ two-axis moving mechanism 5 includes a first screw drive assembly 51, a first movable block 52, a first gear-rack drive assembly 53 and a first mounting block 54. The first screw drive assembly 51 is arranged on the column 4 in the vertical direction. The first movable block 52 is in threaded drive connection with the first screw drive assembly 51 and is arranged to be liftable along the first screw drive assembly 51. The first mounting block 54 is arranged to be slidable relative to the first movable block 52. The sliding direction of the first mounting block 54 is perpendicular to the lifting direction of the first movable block 52. The first gear-rack drive assembly 53 connects the first mounting block 54 and the first movable block 52. The first permanent magnet is mounted on the first mounting block 54.

[0049] The XYZ three-axis moving mechanism 6 includes a second screw drive assembly 61, a second movable block 62, a third screw drive assembly 63, a third movable block 64, a second gear-rack drive assembly 65 and a second mounting block 66. The second screw drive assembly 61 is arranged on the annular turntable 2. The second movable block 62 is in threaded drive connection with the second screw drive assembly 61. The third screw drive assembly 63 is arranged on the second movable block 62. The third movable block 64 is in threaded drive connection with the third screw drive assembly 63. The second mounting block 66 is arranged to be slidable relative to the third movable block 64. The second gear-rack drive assembly 65 connects the second mounting block 66 and the third movable block 64. The second permanent magnet 7 is mounted on the second mounting block 66. The movement directions of the second movable block 62, the third movable block 64 and the second mounting block 66 are perpendicular to each other in pairs.

[0050] In other embodiments, the XZ two-axis moving mechanism 5 can also be other existing adjustment mechanisms. Similarly, the XYZ three-axis moving mechanism 6 can also be other existing adjustment mechanisms.

[0051] The above are only alternative embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structural transformation made by using the content of the specification and drawings of the present utility model under the inventive concept of the present utility model, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present utility model.

Claims

1. The constant magnetic field test device for electric energy meters is characterized in that: including a base; an annular turntable rotatably arranged on the base; a placing seat arranged on the base and corresponding to the hollow area of the annular turntable, and a conducting structural member is arranged on the placing seat; a column arranged on the annular turntable, an XZ two-axis moving mechanism is arranged on the column, and a first permanent magnet is arranged on the XZ two-axis moving mechanism; an XYZ three-axis moving mechanism arranged on the annular turntable, and a second permanent magnet is arranged on the XYZ three-axis moving mechanism.

2. The constant magnetic field testing device for an electric energy meter according to claim 1, wherein: The base is indirectly connected to the annular turntable through a thrust bearing.

3. The electric energy meter constant magnetic field test device according to claim 1, characterized in that: Support feet are arranged at the bottom of the base, and a wire passing hole is arranged on the base and corresponding to the hollow area of the annular turntable.

4. The constant magnetic field test device for an electric energy meter according to claim 1, characterized in that: An active pin is arranged on the annular turntable, and a jack matching with the active pin is arranged on the base, and the number of the active pins is multiple.

5. The constant magnetic field testing device for electric energy meters according to claim 4, characterized in that: The number of the jacks is four, and the four jacks are evenly distributed around the central axis of the annular turntable; the column and the XYZ three-axis moving mechanism are arranged at an interval of 90° around the central axis of the annular turntable.

6. The electric energy meter constant magnetic field test device according to claim 4, characterized in that: An elastic member is further included, and the elastic member contacts the active pin and the annular turntable respectively to drive the active pin to move towards the base.

7. The electric energy meter constant magnetic field testing device according to claim 1, characterized in that: The first permanent magnet is detachably installed on the XZ two-axis moving mechanism.

8. The electric energy meter constant magnetic field test device according to claim 1, characterized in that: The second permanent magnet is detachably installed on the XYZ three-axis moving mechanism.

9. The constant magnetic field testing device for an electric energy meter according to claim 1, wherein: The XZ two-axis moving mechanism includes a first screw driving assembly, a first movable block, a first gear-rack driving assembly and a first mounting block. The first screw driving assembly is arranged on the column in the vertical direction. The first movable block is in threaded driving connection with the first screw driving assembly and can be lifted and lowered along the first screw driving assembly. The first mounting block is slidably arranged relative to the first movable block, and the sliding direction of the first mounting block is perpendicular to the lifting direction of the first movable block. The first gear-rack driving assembly connects the first mounting block and the first movable block, and the first permanent magnet is installed on the first mounting block.

10. The electric energy meter constant magnetic field test device according to claim 1, characterized in that: The XYZ three-axis moving mechanism includes a second screw driving assembly, a second movable block, a third screw driving assembly, a third movable block, a second gear-rack driving assembly and a second mounting block. The second screw driving assembly is arranged on the annular turntable. The second movable block is in threaded driving connection with the second screw driving assembly. The third screw driving assembly is arranged on the second movable block. The third movable block is in threaded driving connection with the third screw driving assembly. The second mounting block is slidably arranged relative to the third movable block. The second gear-rack driving assembly connects the second mounting block and the third movable block. The second permanent magnet is installed on the second mounting block. The movement directions of the second movable block, the third movable block and the second mounting block are perpendicular to each other in pairs.

Images