阅读说明：本技术 一种产生非平行磁场的方法及装置 (Method and device for generating non-parallel magnetic field ) 是由 童庆坤 黄清芳 陈首学 陈志庆 黄佳莹 于 2021-01-12 设计创作，主要内容包括：本发明公开了一种产生非平行磁场的方法及装置,属于磁性材料领域。上述的产生非平行磁场的方法,包括至少三组线圈,可以通过调整各组线圈的匝数、线圈的电流大小、线圈的电流加载时间或各线圈之间的相对位置,如间距、角度等多种方式,根据需要调节磁场取向,实现磁场角度的自由调节,以制备不同角度取向永磁合金。(The invention discloses a method and a device for generating a non-parallel magnetic field, belonging to the field of magnetic materials. The method for generating the non-parallel magnetic field comprises at least three groups of coils, and the magnetic field orientation can be adjusted according to needs by adjusting the number of turns of each group of coils, the current magnitude of the coils, the current loading time of the coils or the relative position between the coils, such as the distance, the angle and other modes, so that the free adjustment of the magnetic field angle is realized, and the permanent magnetic alloy with different angle orientations can be prepared.)

1. A method for generating a non-parallel magnetic field is characterized in that at least three groups of excitation coils are utilized, the magnetic field intensity generated by one group of coils is 1-5 times of the magnetic field intensity generated by the other groups of coils, and the magnetic field generated by one group of coils forms a magnetic loop after passing through the other groups of coils by utilizing the closing characteristic of magnetic lines of force, so that the adjustment of the angle of the magnetic field is realized.

2. The method for generating a non-parallel magnetic field according to claim 1, wherein three sets of excitation coils are used, wherein the first and second sets are disposed on one side, the third set is disposed on the other side, the magnetic field intensity generated by the third set of coils is 1-5 times that generated by the first and second sets of coils, and the magnetic field generated by the first set of coils passes through the second and third sets of coils to form a magnetic loop by using the closed characteristic of magnetic lines, so as to realize the adjustment of the magnetic field angle.

3. A method for generating a non-parallel magnetic field according to claim 2, wherein the adjustment of the magnetic field angle is achieved by adjusting the spacing and/or angle between the three sets of coils.

4. A method for generating a non-parallel magnetic field according to claim 2, wherein the adjustment of the angle of the magnetic field is achieved by adjusting the magnitude of the current in each set of coils.

5. The method of claim 2, wherein the adjustment of the angle of the magnetic field is achieved by adjusting the time of the current applied to the coils.

6. The device for generating the non-parallel magnetic field is characterized by comprising three groups of excitation coils, wherein a first group and a second group are arranged on one side, a third group is arranged on the other side, the first group and the second group are respectively arranged in parallel or non-parallel with the third group, and the magnetic field intensity generated by the third group of coils is 1-5 times that of the magnetic field intensity generated by the first group of coils and the second group of coils.

7. The device for generating non-parallel magnetic fields according to claim 6, wherein the three sets of coils have 10-2000 turns and the current magnitude is 10-2000A.

8. The apparatus of claim 7, wherein the first and second sets of coils are collinear and arranged parallel to the third set of coils, the third set of coils has an inner diameter of 20-1000 mm, the distance between the first and second sets is 0.5-20 times the inner diameter of the third set of coils, and the distance between the first and second sets is 1-20 times the inner diameter of the third set of coils.

9. The apparatus of claim 7, wherein the first and second sets of coils are disposed non-parallel to the third set of coils.

Technical Field

The invention belongs to the field of magnetic materials, and particularly relates to a method and a device for generating a non-parallel magnetic field.

Background

Permanent magnetic alloy is an important functional material indispensable to modern industry and scientific technology. People convert magnetic energy into electric energy or mechanical energy by utilizing the interaction of the magnetic energy and the interaction of the magnetic energy and the electric energy; the effect of the magnetic field on the substances is utilized to change the microstructure of the substances, promote the effects of energy conservation, environmental protection and the like. Permanent magnetic alloys play an important functional role in all these devices or components.

In the current process of preparing permanent magnetic alloy, whether a single group of coils (figure 1) or two groups of coils (figure 2) are used, the magnetic fields used by the permanent magnetic alloy are parallel, the free adjustment of the angle of the magnetic field is difficult to realize, and the magnetic field orientations of the permanent magnetic alloy prepared in the way are also parallel. However, in some special applications, such as Halbach arrays, it is desirable to use non-parallel oriented magnetic fields with an angular distribution. If the conventional parallel orientation permanent magnetic alloy is adopted, module assembly is necessary, and the operation is complicated. Therefore, in the process of preparing the permanent magnetic alloy, a non-parallel magnetic field is introduced to prepare the non-parallel oriented permanent magnetic alloy.

Disclosure of Invention

1. Problems to be solved

The invention provides a method and a device for generating a non-parallel magnetic field, aiming at the problem that the magnetic field orientation in the preparation process of the existing permanent magnetic alloy can not be freely adjusted, and the magnetic field orientation can be adjusted as required to prepare the non-parallel orientation permanent magnetic alloy.

2. Technical scheme

In order to solve the problems, the technical scheme adopted by the invention is as follows:

the invention provides a method for generating a non-parallel magnetic field, which utilizes at least three groups of excitation coils, wherein the magnetic field intensity generated by one group of coils is 1-5 times of the magnetic field intensity generated by the rest groups of coils, and the magnetic field generated by a certain group of coils forms a magnetic loop after passing through the rest groups of coils by utilizing the closed characteristic of the magnetic force lines, so that the adjustment of the magnetic field angle is realized.

Preferably, the method for generating the non-parallel magnetic field uses three groups of excitation coils, wherein the first and second groups are arranged on one side, the third group is arranged on the other side, the magnetic field intensity generated by the third group of coils is 1-5 times of the magnetic field intensity generated by the first and second groups of coils, and the magnetic field generated by the first group of coils forms a magnetic loop after passing through the second and third groups of coils by using the closed characteristic of magnetic lines of force, so as to realize the adjustment of the angle of the magnetic field.

Preferably, the number of turns of the coil is 10 to 2000 turns, the magnitude of the coil current is 10 to 2000A, and the magnitude of the coil current can be adjusted as required.

Preferably, the adjustment of the magnetic field angle can be achieved by adjusting the spacing between the three sets of coils. Further, the magnetic field angle can be adjusted by adjusting the distance between the first group of coils and the second and third groups of coils, or by adjusting the distance between the second and third groups of coils.

Preferably, the adjustment of the magnetic field angle can be achieved by adjusting the angle between the three sets of coils. Further, the first and second sets of coils may be arranged in parallel or non-parallel with the third set of coils.

Preferably, the adjustment of the magnetic field angle can be realized by adjusting the magnitude of the currents of the three groups of excitation coils.

Preferably, the adjustment of the magnetic field angle can be realized by adjusting the loading time of the currents of the three groups of exciting coils. Furthermore, the loading time of the current of each group of excitation coils is that all the coils are loaded with the current at the same time; or the third group of coils is loaded first, and the first group and the second group are loaded simultaneously; or the third group of coils is loaded first, and the first group and the second group are loaded intermittently.

The invention also provides a device for generating the non-parallel magnetic field, which comprises three groups of excitation coils, wherein a first group and a second group are arranged on one side, a third group is arranged on the other side, the magnetic field intensity generated by the third group of coils is 1-5 times of that generated by the first group of coils and the second group of coils respectively, and the magnetic field generated by the first group of coils forms a magnetic loop after passing through the second group of coils and the third group of coils by utilizing the closed characteristic of magnetic lines of force, so that the adjustment of the angle of the magnetic field is realized.

Preferably, the number of turns of the three groups of coils is 10-2000 turns, the current is 10-2000A, and the number of turns of the coils and the current can be adjusted as required.

Preferably, the adjustment of the magnetic field angle can be realized by adjusting the number of turns of each set of coils, and/or the current magnitude of the coils, and/or the current loading time of the coils, and/or the distance between the coils, and/or the angle between the coils, etc.

Preferably, in the apparatus for generating the non-parallel magnetic field, the first and second groups are respectively arranged in parallel with the third group, the first and second groups are in the same straight line and arranged in parallel with the third group, the inner diameter of the third group coil is 20 to 1000mm, the distance between the first and second groups is 0.5 to 20 times of the inner diameter of the third group coil, and the distance between the first and second groups is 1 to 20 times of the inner diameter of the third group coil.

Preferably, the device for generating the non-parallel magnetic field is arranged such that the first, second and third sets are arranged in non-parallel, the angle between the first and third sets is 0 to 90 °, and the angle between the second and third sets is 0 to 90 °.

3. Advantageous effects

Compared with the prior art, the invention has the beneficial effects that:

(1) the method for generating the non-parallel magnetic field can adjust the orientation of the magnetic field according to the requirement, realize the free adjustment of the angle of the magnetic field and prepare the permanent magnetic alloy with different angle orientations.

(2) The method for generating the non-parallel magnetic field can adjust the angle of the magnetic field in various ways such as adjusting the number of turns of the coil, the distance between the coils, the current of each group of the magnet exciting coils, the loading time of the current of each group of the magnet exciting coils and the like, and is more convenient.

Drawings

FIG. 1 is a diagram of the magnetic field generated by a single set of coils during the current permanent magnet alloy manufacturing process;

FIG. 2 is a diagram of the magnetic field generated by two sets of coils in the current permanent magnet alloy manufacturing process;

FIG. 3 is a plan view of the apparatus for generating a non-parallel magnetic field in example 1;

FIG. 4 is a simulation diagram of the non-parallel magnetic field generated by the apparatus for generating a non-parallel magnetic field according to example 1;

FIG. 5 is a simulation diagram of the non-parallel magnetic field generated by the apparatus for generating a non-parallel magnetic field according to example 2;

FIG. 6 is a simulation diagram of the non-parallel magnetic field generated by the device for generating a non-parallel magnetic field in example 3.

Detailed Description

The invention is further described with reference to specific examples.

It should be noted that the terms "upper", "lower", "left", "right" and "middle" used in the present specification are for the sake of clarity, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs; as used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.

As used herein, the term "about" is used to provide the flexibility and inaccuracy associated with a given term, measure or value. The degree of flexibility for a particular variable can be readily determined by one skilled in the art.

As used herein, at least one of the terms "is intended to be synonymous with one or more of. For example, "at least one of A, B and C" explicitly includes a only, B only, C only, and combinations thereof, respectively.

Concentrations, amounts, and other numerical data may be presented herein in a range format. It is to be understood that such a range format is used merely for convenience and brevity and should be interpreted flexibly to include not only the numerical values explicitly recited as the limits of the range, but also to include all the individual numerical values or sub-ranges encompassed within that range as if each numerical value and sub-range is explicitly recited. For example, a numerical range of about 1 to about 4.5 should be interpreted to include not only the explicitly recited limit values of 1 to about 4.5, but also include individual numbers (such as 2, 3, 4) and sub-ranges (such as 1 to 3, 2 to 4, etc.). The same principle applies to ranges reciting only one numerical value, such as "less than about 4.5," which should be construed to include all of the aforementioned values and ranges. Moreover, such an interpretation should apply regardless of the breadth of the range or feature being described.

Any steps recited in any method or process claims may be executed in any order and are not limited to the order presented in the claims.

Example 1

The embodiment provides a device and a method for generating non-parallel magnetic fields, wherein a first group of coils, a second group of coils and a third group of coils are arranged in parallel.

A device for generating non-parallel magnetic field is shown in a top view as shown in FIG. 3 and a simulation diagram as shown in FIG. 4. The number of turns of the first group of coils is 20; the number of turns of the second group of coils is 20; the third set of coils has 20 turns. The inner diameter of the third group of coils is 40mm, and the distance between the first group and the second group is 60 mm; the distance between the second group and the third group is 80 mm; the distance between the first and third sets is 80 mm.

The method for generating the non-parallel magnetic field by the device is that the loading time of the current of each group of magnet exciting coils is that all the coils are loaded with the current at the same time; the current of the first group of coils is 10A, the current of the second group of coils is 10A, and the current of the third group of coils is 10A. The die cavity area generates a non-parallel magnetic field, the included angle between the orientation direction of the center and the vertical central line is 0 degree, and the included angles between the orientation directions of the two sides and the vertical central line are 30 degrees.

Example 2

The embodiment provides a device and a method for generating non-parallel magnetic fields, wherein a first group of coils, a second group of coils and a third group of coils are arranged in parallel.

A simulation of a device for generating non-parallel magnetic fields is shown in FIG. 5. The device comprises three groups of coils, wherein the number of turns of the first group of coils is 20; the number of turns of the second group of coils is 20; the third set of coils has 40 turns. The inner diameter of the third group of coils is 20mm, and the distance between the first group and the second group is 100 mm; the distance between the second group and the third group is 80 mm; the distance between the first and third sets is 80 mm.

The method for generating the non-parallel magnetic field by the device is that the loading time of the current of each group of magnet exciting coils is that all the coils are loaded with the current at the same time; the current of the first group of coils is 10A, the current of the second group of coils is 10A, and the current of the third group of coils is 10A. The die cavity area generates a non-parallel magnetic field, the included angle between the orientation direction of the center and the vertical central line is 0 degree, and the included angles between the orientation directions of the two sides and the vertical central line are 50 degrees.

Example 3

The embodiment provides a device and a method for generating non-parallel magnetic fields, wherein the first, second and third groups of coils are arranged in a non-parallel manner.

A simulation of a device for generating non-parallel magnetic fields is shown in FIG. 6. The device comprises three groups of coils, wherein the number of turns of the first group of coils is 20; the number of turns of the second group of coils is 20; the third set of coils has 100 turns. The inner diameter of the third group of coils is 20mm, and the distance between the first group and the second group is 120 mm; the angle between the second and third sets is 90 °; the angle between the first and third sets is 90 deg..

The method for generating the non-parallel magnetic field by the device is that the loading time of the current of each group of magnet exciting coils is that all the coils are loaded with the current at the same time; the current of the first group of coils is 10A, the current of the second group of coils is 10A, and the current of the third group of coils is 10A. The die cavity area generates a non-parallel magnetic field, the included angle between the orientation direction of the center and the vertical central line is 0 degree, and the included angles between the orientation directions of the two sides and the vertical central line are 80 degrees.