Rogowski coil

A Rogowski coil and bobbin technology, applied in the direction of transformer/inductor coil/winding/connection, preventing/reducing unnecessary electric/magnetic influence, etc., can solve the problem of increased magnetic field leakage and poor overall structural stability of Rogowski coils , Rogowski coil shape is difficult to maintain and other problems, to achieve the effect of improving accuracy, improving connection stability, and reducing magnetic field leakage

Pending Publication Date: 2022-04-15
上海嘉益电器设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the process of implementing the present application, the inventors found that there are at least the following problems in this technology: because multiple bobbins are hinged to each other, the degree of freedom between the bobbins is relatively high, and the overall structural stability of the Rogowski coil is poor. The shape of the coil is difficult to maintain, resulting in increased magnetic field leakage

Method used

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  • Rogowski coil
  • Rogowski coil
  • Rogowski coil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] refer to figure 1 and figure 2 , the Rogowski coil includes a plurality of winding frames 1 and a limit mechanism 2, and the plurality of winding frames 1 are connected end to end, and the limit mechanism 2 includes a base 21 and a plurality of connecting components 22, and a plurality of winding frames 1 are arranged on the base 21 Above, the connecting assembly 22 makes the adjacent bobbins 1 hinged.

[0041] refer to figure 1 and figure 2 , The winding frame 1 includes a support rod 11 and two baffles 12, and the two baffles 12 are fixed at both ends of the support rod 11. In use, the coil is wound on the support rod 11, and the length of the coil is limited by the baffle 12. The connection assembly 22 includes a first connection block 221, a second connection block 222 and a latch 223. The first connection block 221 is integrally formed on the side of a baffle plate 12 away from the support rod 11, and the second connection block 6 is integrally formed on the ...

Embodiment 2

[0045] The difference between embodiment 2 and embodiment 1 is: refer to image 3 , The limit mechanism 2 includes a base 21 and a plurality of installation rods 23 , and the bobbin frame 1 is fixed on the base 21 . By fixing the winding frame 1 on the base 21, the stability of the connection between the winding frame 1 and the base 21 is improved, the stability between the winding frame 1 and the winding frame 1 is improved, and the leakage of the Rogowski coil magnetic field is reduced.

[0046] refer to image 3 , The base 21 is provided with a plurality of installation grooves 4, the installation grooves 4 are arranged between adjacent installation frames, and a plurality of installation rods 23 are arranged in the installation grooves 4 one by one. Wind the coil on the installation rod 23, use the coil on the installation rod 23 to fill the gap between the bobbins 1, and compensate the place where the magnetic field leaks more, so that the magnetic field of the Rogowski co...

Embodiment 3

[0049] The difference between embodiment 3 and embodiment 1 is: refer to Figure 4 , the limit mechanism 2 includes a plurality of mounting plates 24 and winding rods 25 arranged at intervals. The mounting plate 24 is integrally formed on the bottom surface of the baffle plate 12. The ends are integrally formed on the side walls of the two baffles 12 respectively, and the winding rod 25 is arranged between adjacent winding frames 1 . The winding frame 1 , the mounting plate 24 and the winding rod 25 are integrally formed to improve the stability between the winding frame 1 and the winding frame 1 and reduce the leakage of the Rogowski coil magnetic field. Due to the use of a printed circuit board, after the coil is wound, it can be directly welded on the printed circuit board, which facilitates and quickly completes the connection between the coils and improves the production efficiency of the Rogowski coil. The coil is wound on the winding rod 25 to compensate the places whe...

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PUM

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Abstract

The invention relates to the field of electrical elements, in particular to a Rogowski coil which comprises a plurality of mutually connected winding frames and a limiting mechanism which is connected with the winding frames and limits relative rotation between the winding frames. The limiting mechanism comprises a base and a plurality of connecting assemblies, the winding frames are arranged on the base, the connecting assemblies are arranged between the adjacent winding frames, and the winding frames are connected end to end. The Rogowski coil has the effects of improving the stability of the Rogowski coil, improving the output linearity and precision and reducing the leakage of a magnetic field.

Description

technical field [0001] The present application relates to the field of electrical components, in particular to a Rogowski coil. Background technique [0002] The Rogowski coil is a hollow loop coil that can be directly placed on the conductor to be measured to measure AC current. Rogowski coils are suitable for the measurement of AC currents in a wide frequency range. There are no special requirements for conductors and sizes, and they have fast instantaneous response capabilities. They are widely used in occasions where traditional current measurement devices such as current transformers cannot be used. It is suitable for current measurement, especially high frequency and large current measurement. [0003] At present, in order to reduce the magnetic field leakage of the Rogowski coil in use as much as possible, the coil is wound on a short and long winding frame, and multiple winding frames are hinged to each other in a ring shape, and multiple coils are connected to each...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/30H01F27/34
Inventor 何嘉杰
Owner 上海嘉益电器设备有限公司
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