Diverter mounting structure and electric energy meter thereof

Abstract

The utility model belongs to the technical field of instruments and meters, and discloses an installation structure of a shunt and an electric energy meter thereof. The mounting structure of the shunt comprises a wiring board and a sampling piece, the wiring board comprises a main body and crimping parts arranged at the two ends of the main body, the main body rotates to a preset angle around the length direction of the crimping parts relative to the crimping parts, the preset angle is not equal to 0 degree or 180 degrees, and in a plane parallel to the crimping parts, the projection width of the main body is smaller than that of the crimping parts; the sampling piece is arranged on the main body. According to the utility model, the main body and the crimping part are adjusted to be in a non-coplanar state, so that the projection width of the main body is smaller than that of the crimping part in a plane parallel to the crimping part, and the electrical gap between adjacent wiring boards is further increased; according to the electric energy meter, the electric gap is not increased only by increasing the gap between the two adjacent wiring boards in the plane, the space is reasonably utilized to increase the electric gap on the premise that the cost and the size of the electric energy meter are not increased, and the electric performance of the electric energy meter is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of instruments and meters, in particular to an installation structure of a shunt and an electric energy meter thereof. Background Art

[0002] The prior art discloses an electric energy meter. Please refer to the attached Figures 1-3 The electric energy meter includes a first wiring board 100 and a shunt arranged in parallel in multiple phases. First crimping parts 110 are respectively arranged at two ends of the first wiring board 100. The shunt includes a first sampling part 200 attached to the surface of the first wiring board 100. Exemplarily, the electric energy meter includes three phases A, B, and C. Since the plane where the first sampling part 200 of the shunt is located is parallel to the plane where the first crimping part 110 is located, the three first sampling parts 200 on the first wiring boards 100 in the three phases are arranged in parallel, and the space is not effectively utilized, resulting in an electrical clearance L1 between adjacent first wiring boards 100. L1 is relatively small, reducing the electrical performance of the electric energy meter. Summary of the Utility Model

[0003] The purpose of the utility model is to provide an installation structure of a shunt and an electric energy meter thereof, which fully utilizes the space, thereby increasing the electrical clearance and improving the electrical performance of the electric energy meter.

[0004] To achieve the above object, the utility model adopts the following technical solutions:

[0005] The installation structure of the shunt includes:

[0006] A wiring board, the wiring board includes a main body and crimping parts arranged at both ends of the main body. The main body rotates around its length direction relative to the crimping parts to a preset angle, and the preset angle is not equal to 0° or 180°. In a plane parallel to the crimping parts, the projected width of the main body is smaller than the projected width of the crimping parts;

[0007] A sampling part, arranged on the main body.

[0008] As an optional scheme of the installation structure of the shunt, the preset angle is 90°.

[0009] As an optional scheme of the installation structure of the shunt, the sampling part includes a first part made of manganin and a second part made of copper and electrically connected to the first part.

[0010] As an optional scheme of the installation structure of the shunt, a torsion part is arranged between the main body and the crimping parts, and rotates to the preset angle through the torsion part.

[0011] As an optional scheme of the installation structure of the shunt, the main body, the torsion part and the crimping parts are of an integral structure.

[0012] As an alternative to the installation structure of the shunt, the sampling member is detachably connected to the main body.

[0013] As an alternative to the installation structure of the shunt, the sampling member includes a first end and a second end arranged in sequence along the length direction of the main body, and the sampling member is welded to the main body through the first end and the second end; a plurality of sampling needles are welded on the sampling member, and the sampling member is electrically connected to the control circuit board through the sampling needles.

[0014] The electric energy meter includes a base and also includes the installation structure of the shunt according to any of the above solutions, and the wiring board is arranged in the base.

[0015] As an alternative to the electric energy meter, a plurality of partition plates are arranged inside the base, and the partition plates are arranged between two adjacent wiring boards.

[0016] As an alternative to the electric energy meter, the partition plates are respectively convexly provided on two opposite inner walls of the base, and the partition plates extend from the inner wall of the base towards the inside of the base.

[0017] Beneficial effects:

[0018] In the first aspect of the present invention, crimping portions for crimping with wires are respectively arranged at both ends of the wiring board. The wires are first crimped and welded by the crimping portions to achieve electrical connection. The sampling member is arranged on the main body and is used to shunt the current flowing through the wiring board from the main body, so as to realize the acquisition of the current signal. By rotating the main body on which the sampling member is installed relative to the crimping portion by a preset angle around its length direction, and the preset angle is not equal to 0° or 180°, so that the plane where the sampling member and the main body are located is adjusted to a non-coplanar state with the plane where the crimping portion is located, so that in the plane parallel to the crimping portion, the projected width of the main body is smaller than the projected width of the crimping portion, further increasing the electrical clearance between adjacent wiring boards, and no longer simply relying on the increase of the gap between two adjacent wiring boards in the plane to increase the electrical clearance, that is, without increasing the cost and the volume of the electric energy meter, effectively and reasonably utilizing the space to increase the electrical clearance and improve the electrical performance of the electric energy meter.

[0019] In the second aspect of the present invention, the electric energy meter configured with the above installation structure of the shunt can meet the requirement of high electrical clearance, adaptively utilize the internal space of the base without increasing the volume of the base, so as to effectively increase the electrical clearance and improve the electrical performance of the whole electric energy meter. Description of the drawings

[0020] Figure 1 is the front view of the connection between the first wiring board and the first sampling member in the prior art;

[0021] Figure 2 It is a side view of the connection between the first wiring board and the first sampling component in the prior art;

[0022] Figure 3 It is a schematic diagram of the internal structure of an electricity meter showing the connection between the first wiring board and the first sampling component in the prior art;

[0023] Figure 4 It is a front view of the connection between the wiring board and the sampling component provided by an embodiment of the present invention;

[0024] Figure 5 It is a side view of the connection between the wiring board and the sampling component provided by an embodiment of the present invention;

[0025] Figure 6 It is a schematic diagram of the internal structure of an electricity meter showing the connection between the wiring board and the sampling component provided by an embodiment of the present invention.

[0026] In the figure:

[0027] 100, the first wiring board; 110, the first crimping part; 200, the first sampling component;

[0028] 1, the wiring board; 11, the main body; 12, the crimping part; 13, the torsion part;

[0029] 2, the sampling component; 21, the first end; 22, the second end; 23, the sampling needle:

[0030] 3, the base; 31, the partition. Detailed implementation manners

[0031] The present invention will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. Additionally, it should be noted that for the sake of description, only parts related to the present invention are shown in the drawings, rather than all the structures.

[0032] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" 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 communication inside 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 the present invention can be understood according to specific situations.

[0033] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or may include the first and second features not being in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under" and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is less than that of the second feature.

[0034] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0035] Please refer to the attached Figure 4 - attached Figure 6 drawing. The first aspect of this embodiment relates to an installation structure of a shunt, and the installation structure of the shunt includes a wiring board 1 and a sampling member 2. Specifically, the wiring board 1 includes a main body 11 and crimping portions 12 provided at both ends of the main body 11. The main body 11 rotates relative to the crimping portions 12 to a preset angle around its length direction, and the preset angle is not equal to 0° or 180°. In a plane parallel to the crimping portions 12, the projected width of the main body 11 is smaller than the projected width of the crimping portions 12; the sampling member 2 is disposed on the main body 11.

[0036] In this embodiment, the wiring board 1 is an integrally conductive long strip-shaped metal part. Crimping parts 12 for crimping with wires are respectively arranged at both ends of the wiring board 1. The crimping parts 12 are overall rectangular. The wire is first pressed and welded by the crimping parts 12 to achieve electrical connection. The sampling part 2 is also rectangular. The sampling part 2 is attached to and fixed on the surface of the main body 11, and is used to shunt the current flowing through the wiring board 1 from the main body 11, so as to realize the acquisition of the current signal. By rotating the main body 11 where the sampling part 2 is installed relative to the crimping part 12 around its length direction to a preset angle, and the preset angle is not equal to 0° or 180°, the plane where the sampling part 2 and the main body 11 are located is adjusted to a non-coplanar state with the plane where the crimping part 12 is located, that is, there is a certain torsional angle of the main body 11 relative to the crimping part 12. Thus, in the plane parallel to the crimping part 12, the projected width of the main body 11 is smaller than the projected width of the crimping part 12, further increasing the electrical clearance between adjacent wiring boards 1, and no longer simply relying on the increase of the clearance between two adjacent wiring boards 1 in the plane to increase the electrical clearance. That is, without increasing costs and the volume of the electric energy meter, the space is effectively and reasonably utilized to increase the electrical clearance and improve the electrical performance of the electric energy meter.

[0037] Optionally, the preset angle is 90°.

[0038] In this embodiment, when the plane where the main body 11 is located is perpendicular to the plane where the crimping part 12 is located, the distance between the main bodies 11 of two adjacent wiring boards 1 can be maximally increased. Exemplarily, the distance between the main bodies 11 of the two wiring boards 1 can be increased to L2, and L2 is greater than L1 in the prior art, ensuring the maximum utilization of the installation space, thereby maximizing the electrical clearance and the electrical performance of the electric energy meter.

[0039] Optionally, a torsion part 13 is provided between the main body 11 and the crimping part 12, and the torsion part 13 is rotated to the preset angle.

[0040] In this embodiment, the angle adjustment between the main body 11 and the crimping part 12 is realized through the torsion part 13, and the specific preset angle can be an acute angle or a right angle. The torsion part 13 itself is bent and twisted by equipment to ensure the accuracy of the relative angle of the plane where the main body 11 is located relative to the plane where the crimping part 12 is located.

[0041] Furthermore, the main body 11, the torsion part 13 and the crimping part 12 are of an integral structure.

[0042] Of course, the entire wiring board 1 is an integral structural part. The wiring board 1 is first processed into an integral plate, and then bent and twisted by equipment to twist a certain angle between the main body 11 and the crimping part 12, and a torsion part 13 is formed therebetween. The integral structure can avoid the generation of contact resistance, reduce the resistance of the entire wiring board 1, and improve the conductivity.

[0043] Optionally, the sampling member 2 is detachably connected to the main body 11.

[0044] In this embodiment, the sampling member 2 can be fixed to the main body 11 by a threaded fastener, and the sampling member 2 and the main body 11 are locked by the threaded fastener. Of course, in other embodiments, when the contact resistance is within the allowable range, the sampling member 2 can be snap-connected to the main body 11, and the technical effect of convenient disassembly can also be achieved.

[0045] Optionally, the sampling member 2 includes a first end 21 and a second end 22 arranged in sequence along the length direction of the main body 11, and the sampling member 2 is welded to the main body 11 through the first end 21 and the second end 22; a plurality of sampling needles 23 are welded on the sampling member 2, and the sampling member 2 is electrically connected to the control circuit board through the sampling needles 23.

[0046] In this embodiment, the sampling member 2 is rectangular. Along the extending direction of the length of the main body 11, the sampling member 2 has opposite first end 21 and second end 22. First, the sampling member 2 is placed at a preset position of the main body 11 by using a tooling, and the first end 21 and the second end 22 are respectively welded to the main body 11 by using a conventional welding method. By using two welding connections at opposite positions, the stability of the sampling member 2 can be ensured; a plurality of sampling needles 23 are welded on one side of the sampling member 2 along the width direction of the main body 11. During the welding process, the welding points of the sampling needles 23 need to be ensured to be firm and reliable to withstand the thermal stress and mechanical stress generated when the current passes through. The sampling needles 23 have the characteristics of high conductivity, corrosion resistance and high temperature resistance, and can also be made of manganese copper material to ensure stability and accuracy in the working environment. The sampling needles 23 are used for plugging into the corresponding interfaces of the control circuit board to complete the electrical connection between the sampling member 2 and the control circuit board, and ensure that the sampling current smoothly flows out along the sampling needles 23.

[0047] Furthermore, the sampling member 2 includes a first part made of manganese copper material and a second part made of copper material and electrically connected to the first part.

[0048] In this embodiment, the sampling piece 2 is formed integrally by an electron beam welding of a first part made of manganin and a second part made of electrolytic copper. Among them, manganin is an alloy containing up to 60% copper, and also contains a small amount of elements such as aluminum, manganese, nickel, etc.; while electrolytic copper is based on copper and is made by incorporating a small amount of zinc and other impurity elements, with higher purity, usually containing more than 99.70% copper. Manganin has better hardness and wear resistance than electrolytic copper, and also has higher tensile strength and yield strength, and still maintains good performance in high-temperature environments; while electrolytic copper is famous for its good flexibility. By using the sampling piece 2 formed by two materials, under the condition that the accuracy permits, it can not only meet the occasions of high-precision current measurement and high-voltage environment measurement of the electric energy meter, but also meet good electrical conductivity. Those skilled in the art can make targeted adjustments to the structures and proportions of the first part and the second part according to specific application requirements and usage environments.

[0049] The second aspect of this embodiment relates to an electric energy meter, which includes a base 3 and the installation structure of the above shunt, and a wiring board 1 is arranged inside the base 3.

[0050] In this embodiment, a plurality of juxtaposed installation positions are provided on the base 3 for positioning and installing a plurality of wiring boards 1 of different phases. The electric energy meter configured with the installation structure of the above shunt can meet the requirements of high electrical clearance. Exemplarily, in an environment above 4 km altitude, the electrical clearance should be at least 8 mm or more. Using the electric energy meter in the prior art, it is difficult to achieve the above improvement of the electrical clearance without increasing the volume of the base 3. Through the electric energy meter of this embodiment, the internal space of the base 3 can be adaptively utilized without increasing the volume of the electric energy meter, thereby effectively improving the electrical clearance and enhancing the electrical performance of the entire electric energy meter.

[0051] Optionally, a plurality of partition boards 31 are arranged inside the base 3, and the partition boards 31 are arranged between two adjacent wiring boards 1.

[0052] In this embodiment, by arranging a plurality of partition boards 31 inside the base 3, and the partition boards 31 are arranged between two adjacent wiring boards 1, the electrical isolation of the entire electric energy meter can be effectively improved, and the electrical performance can be enhanced.

[0053] Further, partition boards 31 are respectively convexly provided on two opposite inner walls of the base 3, and the partition boards 31 extend from the inner wall of the base 3 towards the inside of the base 3. In the length direction of the wiring board 1, the free ends of the partition boards 31 extend between the main body 11 and the crimping part 12.

[0054] In this embodiment, the partition boards 31 protrude and extend from two opposite inner walls of the base 3 towards the inside. The partition boards 31 and the base 3 are integrally formed by a plastic pressing mold, and the partition boards 31 form a partition wall, thereby ensuring the insulation between adjacent wiring boards 1.

[0055] Obviously, the above embodiments of the present utility model are merely examples for clearly illustrating the present utility model, rather than limitations on the implementation manners of the present utility model. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present utility model. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the claims of the present utility model.

Claims

1. The installation structure of the diverter is characterized by: include: A wiring board (1), the wiring board (1) comprising a main body (11) and crimping portions (12) arranged at two ends of the main body (11), the main body (11) being rotated relative to the crimping portion (12) around its length direction to a preset angle, and the preset angle is not equal to 0° or 180°, and in a plane parallel to the crimping portion (12), the projected width of the main body (11) is smaller than the projected width of the crimping portion (12); A sampling member (2) is arranged on the main body (11).

2. The installation structure of the diverter according to claim 1, characterized in that: The preset angle is 90°.

3. The installation structure of the diverter according to claim 1, characterized in that: The sampling member (2) comprises a first part made of manganese copper and a second part made of red copper electrically connected to the first part.

4. The installation structure of the diverter according to claim 1, characterized in that: A twisting portion (13) is provided between the main body (11) and the crimping portion (12), and the twisting portion (13) is used to rotate to the preset angle.

5. The installation structure of the diverter according to claim 4, characterized in that: The main body (11), the torsion portion (13) and the crimping portion (12) are an integrated structure.

6. The installation structure of the diverter according to claim 1, characterized in that: The sampling piece (2) is detachably connected to the main body (11).

7. The installation structure of the diverter according to claim 1, characterized in that: The sampling piece (2) comprises a first end (21) and a second end (22) which are sequentially arranged along the length direction of the main body (11), and the sampling piece (2) is welded to the main body (11) via the first end (21) and the second end (22); a plurality of sampling needles (23) are welded to the sampling piece (2), and the sampling piece (2) is electrically connected to a control circuit board via the sampling needles (23).

8. An electric energy meter, comprising a base (3), characterized in that: It also comprises a mounting structure of the shunt as claimed in any one of claims 1 to 7, wherein the terminal block (1) is arranged in the base (3).

9. The electric energy meter according to claim 8, characterized in that: A plurality of partitions (31) are arranged inside the base (3), and the partitions (31) are arranged between two adjacent wiring boards (1).

10. The electric energy meter according to claim 9, characterized in that: The partition plates (31) are respectively protruded on two opposite inner walls of the base (3), and the partition plates (31) extend from the inner wall of the base (3) toward the interior of the base (3).

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