CN102110511B - Magnetic box generating parallel and homogenous magnetic field - Google Patents
Magnetic box generating parallel and homogenous magnetic field Download PDFInfo
- Publication number
- CN102110511B CN102110511B CN2010106057147A CN201010605714A CN102110511B CN 102110511 B CN102110511 B CN 102110511B CN 2010106057147 A CN2010106057147 A CN 2010106057147A CN 201010605714 A CN201010605714 A CN 201010605714A CN 102110511 B CN102110511 B CN 102110511B
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- magnetic
- magnetic pole
- magnetic field
- pole plates
- permanent magnet
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Abstract
The invention discloses a magnetic box generating parallel and homogenous magnetic field. The magnetic box comprises two inner magnetic pole plates, wherein the two inner magnetic pole plates are connected by a support pillar; the two inner magnetic pole plates are provided with permanent magnets relative to the outer sides of the support pillar; outer magnetic pole plates are connected outside the permanent magnets; and magnetic yokes are connected with the two outer magnetic pole plates through framing. The magnetic yokes frame the two outer magnetic pole plates, the permanent magnets at the inner sides of the outer magnetic pole plates, the two inner magnetic pole plates and the support pillar to form the compact magnetic box structure to generate parallel and homogenous magnetic field, thus the magnetic box not only has high strength and stable magnetic force, but also has simple structure.
Description
Technical field
The present invention relates to a kind of device that produces magnetic field, relate in particular to the magnetic holder that produces parallel uniform magnetic field.
Background technology
The device that produces magnetic field is widely used in fields such as industry, science and technology, teaching at present, also is applied on the imaging device such as magnetic resonance, and general the requirement has stable, powerful magnetic field, and bigger its imaging effect of magnetic field intensity is good more.The device in general existing generation magnetic field all needs bigger magnet to produce defectives such as the heavy mobile difficulty of equipment as reaching more than the 400mT.
The Chinese invention patent patent No. 03136672.4 discloses the magnetostatic field generator in a kind of magnetic resonance equipment, at additional one second grading ring of the outer rim of first grading ring; Can use the different permanent magnet unit of many group magnetic energy levels to constitute the permanent magnetic field source; Can on device, a plurality of magnetic conductions or permanent magnetism bolt be set; Can also above-mentioned three types of kind unit constructions be got up to use.A kind of method of corresponding adjusting magnetostatic field is disclosed in addition; Adopt an additional grading ring; Perhaps construct the permanent magnetic field source, make apart from the pole piece center magnetic energy level that is higher than inboard unit than the magnetic energy level of the unit in the outside, the field intensity that the means of a plurality of magnetic conductions or permanent magnetism bolt of perhaps on device, being provided with are regulated magnetostatic field with the different permanent magnet unit of many group magnetic energy levels; The relative skewness in magnetic field that this kind device produces, and structure is complicated.
Summary of the invention
The magnetic holder of the parallel uniform magnetic field of generation of the invention provides that a kind of magnetic field intensity is big, magnetic force is stable, simple in structure.
A kind of magnetic holder that produces parallel uniform magnetic field comprises two blocks of internal magnetic pole plates, is connected by support column between two blocks of internal magnetic pole plates; The outside of two relative support columns of internal magnetic pole plate is equipped with permanent magnet; The permanent magnet outside all connects the outer magnetic pole plate; Described outer magnetic pole plate is provided with the yoke frame outward and lives two blocks of outer magnetic pole plates and inboard permanent magnet, internal magnetic pole plate and support column thereof; Form a kind of magnetic holder structure of compactness; Yoke is a kind of permeability magnetic material on the other hand, and the magnetic field that is beneficial to guide permanent magnet the to produce loss that reduces magnetic field that do not leak constitutes magnetic loop.This kind magnetic holder structure is a kind ofly to support two four-way box body structures that the internal magnetic pole plate forms by support column, and this kind casket body frame connects simple and compact for structure, the good portability of formation on the one hand, the four-way box body also is highly susceptible to object and passes in and out this kind magnetic holder and produce parallel uniform magnetic field simultaneously.
Described support column is a non-magnet material, upsets parallel uniform magnetic field to prevent magnetic field through support column.
Described permanent magnet is interconnected by the magnet steel more than two and constitutes, and the acting in conjunction through a plurality of magnetic patch improves magnetic field intensity makes it reach more than the 400mT than magnetic field under the small size.
Described internal magnetic pole plate is provided with the adjustment piece; Because particularly the permanent magnet of polylith fritter magnet steel formation is because each magnet steel all exists the slight change in magnetic field to cause the inhomogeneities of local magnetic field in the magnetic holder thus in the permanent magnet, the inhomogeneities that can regulate described local magnetic field through adjustment piece (thin slice that permeability magnetic material constitutes) makes the Distribution of Magnetic Field of magnetic holder integral body be tending towards even more.
The present invention lives the magnetic holder structure that two blocks of outer magnetic pole plates and inboard permanent magnet thereof, two blocks of internal magnetic pole plates and support column form a kind of compactness through the yoke frame, produces parallel uniform magnetic field, and not only magnetic field intensity is big, magnetic force stable but also simple in structure.
Description of drawings
Fig. 1 looks the sectional structure sketch map for the magnetic holder master that the present invention produces parallel uniform magnetic field.
Fig. 2 be among Fig. 1 A-A to the sectional structure sketch map.
The profile direction of Fig. 1 from B-B among Fig. 2 to, arrow is represented the distribution situation of magnetic field magnetic line among Fig. 1; The distribution situation of magnetic field magnetic line shown in the arrow in the hexagon square frame representative graph 1 that gathers among Fig. 2.
Embodiment
Comprise like Fig. 1, a kind of magnetic holder that produces parallel uniform magnetic field shown in Figure 2, connect by support column 5 between 4, two blocks of internal magnetic pole plates 4 of two blocks of internal magnetic pole plates; Two internal magnetic pole plate 4 relative support columns 5 outsides are equipped with permanent magnet 2; Permanent magnet 2 outsides all connect outer magnetic pole plate 3, and yoke 1 frame connects above-mentioned two blocks of outer magnetic pole plates 3.Support column 5 is a non-magnet material.The magnetic circuit that this kind magnetic holder is produced is: internal magnetic pole plate 4 → another piece internal magnetic pole plate 4 → permanent magnet 2 → outer magnetic pole plate 3 → yoke 1 → another piece outer magnetic pole plate 3 → another piece permanent magnet 2 → internal magnetic pole plate 4 is accomplished magnetic loop.Produced parallel uniform magnetic field between internal magnetic pole plate 4 in the above-mentioned magnetic loop → another piece internal magnetic pole plate 4.
Yoke 1 is a square frame shape, and certainly yoke 1 also can be other shapes accomplishing under magnetic conduction and the fixing effect.Permanent magnet 2 is interconnected by the fritter magnet steel more than two and constitutes, along with its magnetic field intensity that increases of unit are lower magnetic steel quantity also is enhanced.
Internal magnetic pole plate 4 is provided with adjustment piece 6, makes between two blocks of internal magnetic pole plates 4 of magnetic holder magnetic field more parallel evenly with the variation of adjusting the uniformity of magnetic field that different magnet steel cause.
Claims (3)
1. magnetic holder that produces parallel uniform magnetic field, it is characterized in that: described magnetic holder comprises, two blocks of internal magnetic pole plates (4) are connected by support column (5) between two blocks of internal magnetic pole plates (4); Two blocks of internal magnetic pole plates (4) outside of support column (5) relatively are equipped with permanent magnet (2); Described permanent magnet (2) is interconnected by the magnet steel more than two and constitutes; Described internal magnetic pole plate (4) is provided with adjustment piece (6); Described permanent magnet (2) outside all connects outer magnetic pole plate (3), and outer yoke (1) frame that is provided with of described outer magnetic pole plate (3) is lived two blocks of outer magnetic pole plates (3) and inboard permanent magnet (2), internal magnetic pole plate (4) and support column (5) thereof.
2. the magnetic holder of the parallel uniform magnetic field of generation as claimed in claim 1 is characterized in that: described support column (5) is a non-magnet material.
3. the magnetic holder of the parallel uniform magnetic field of generation as claimed in claim 1 is characterized in that: described yoke (1) is a square frame shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106057147A CN102110511B (en) | 2010-12-27 | 2010-12-27 | Magnetic box generating parallel and homogenous magnetic field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106057147A CN102110511B (en) | 2010-12-27 | 2010-12-27 | Magnetic box generating parallel and homogenous magnetic field |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102110511A CN102110511A (en) | 2011-06-29 |
| CN102110511B true CN102110511B (en) | 2012-08-08 |
Family
ID=44174638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010106057147A Expired - Fee Related CN102110511B (en) | 2010-12-27 | 2010-12-27 | Magnetic box generating parallel and homogenous magnetic field |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102110511B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106219484A (en) * | 2016-08-09 | 2016-12-14 | 电子科技大学 | The preparation method of the nano-particles self assemble array that a kind of magnetic anisotropy is controlled |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4672346A (en) * | 1984-04-11 | 1987-06-09 | Sumotomo Special Metal Co., Ltd. | Magnetic field generating device for NMR-CT |
| CN2588368Y (en) * | 2002-12-12 | 2003-11-26 | 栾材宝 | Rareearth permanent magnet type nuclear magnetic resonance massspectrometer magnetic filed device |
| CN201138590Y (en) * | 2008-01-08 | 2008-10-22 | 东南大学 | Magnetic field providing apparatus |
| CN201536041U (en) * | 2009-09-15 | 2010-07-28 | 中国石油天然气股份有限公司 | Magnet for full-diameter core analyzer |
| CN201966018U (en) * | 2010-12-27 | 2011-09-07 | 诸暨意创磁性技术有限公司 | Magnetic box capable of generating parallel uniform magnetic field |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61203605A (en) * | 1985-03-07 | 1986-09-09 | Fuji Electric Co Ltd | Magnet having highly uniform magnetic field |
| FR2704975B1 (en) * | 1993-05-03 | 1995-06-23 | Commissariat Energie Atomique | Permanent magnet structure for the production of a stable and homogeneous magnetic induction in a given volume. |
-
2010
- 2010-12-27 CN CN2010106057147A patent/CN102110511B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4672346A (en) * | 1984-04-11 | 1987-06-09 | Sumotomo Special Metal Co., Ltd. | Magnetic field generating device for NMR-CT |
| CN2588368Y (en) * | 2002-12-12 | 2003-11-26 | 栾材宝 | Rareearth permanent magnet type nuclear magnetic resonance massspectrometer magnetic filed device |
| CN201138590Y (en) * | 2008-01-08 | 2008-10-22 | 东南大学 | Magnetic field providing apparatus |
| CN201536041U (en) * | 2009-09-15 | 2010-07-28 | 中国石油天然气股份有限公司 | Magnet for full-diameter core analyzer |
| CN201966018U (en) * | 2010-12-27 | 2011-09-07 | 诸暨意创磁性技术有限公司 | Magnetic box capable of generating parallel uniform magnetic field |
Non-Patent Citations (2)
| Title |
|---|
| JP昭61-203605A 1986.09.09 |
| JP特开平7-375A 1995.01.06 |
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| CN102110511A (en) | 2011-06-29 |
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