Magnetic focusing coil and its array setting method

A coil array and magnetic focusing technology, applied in the field of magnetic focusing
CN104700974BActive Publication Date: 2017-07-21CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2017-07-21

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Abstract

The invention discloses a magnetic focusing coil and a method for setting the array, and belongs to the technical field of magnetic focusing. The invention provides a magnetic focusing coil with greatly improved focusing performance, simple and easy to manufacture, convenient and easy to measure, and no measurement blind area and an array setting method thereof. It is characterized by at least two coil groups distributed in the shape of concentric circles, which are nested together in turn. One end of the two coils is in the same plane, and the radii of the two coils are different. The radius of coil 1 is r1=1cm , the value range of the radius r2 of the coil 2 is in (1,2] cm, and the radius is increased by 0.1 cm unit, that is, the radius ratio between the coil 2 and the coil 1 is in the range of (1, 2]. The focus of the present invention Compared with a single coil or the 8-shaped coil and some coil arrays in the prior art, the focusing effect has been greatly improved; the scale of the present invention can be enlarged or reduced, and the application range is extremely wide; for example: large ones can be applied to oil exploration field, and small ones can be applied to the field of medical devices and so on.
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Description

technical field

[0001] The invention discloses a magnetic focusing coil and a method for setting the array, and belongs to the technical field of magnetic focusing. Background technique

[0002] With the widespread use of magnetic focusing technology in fields such as medicine and petroleum exploration, in order to achieve magnetic focusing, various coil array structures designed to achieve focusing have been continuously proposed. From the original 8-shaped coil to the three-dimensional space coil array structure, they are all designed for the problem of how to improve the focus of the coil array.

[0003] The electromagnetic field focusing performance achieved by a simple single coil (circular coil, rectangular wire frame, etc.) is not good, the focusing area is too large, the energy of the magnetic field is scattered, and it cannot meet the needs of depth measurement.

[0004] The 8-shaped coil is to place two circular coils side by side, and the currents in the two circ...

Claims

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