CN2722396Y - Rectangular permanent magnet - Google Patents

Rectangular permanent magnet Download PDF

Info

Publication number
CN2722396Y
CN2722396Y CN 200420009046 CN200420009046U CN2722396Y CN 2722396 Y CN2722396 Y CN 2722396Y CN 200420009046 CN200420009046 CN 200420009046 CN 200420009046 U CN200420009046 U CN 200420009046U CN 2722396 Y CN2722396 Y CN 2722396Y
Authority
CN
China
Prior art keywords
magnetic
magnetic patch
working gas
permanent magnet
rectangle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 200420009046
Other languages
Chinese (zh)
Inventor
赵凌志
彭燕
凌金福
沙次文
郑毅
李然
周适
杨爱华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Institute of Electrical Engineering of CAS
Original Assignee
Institute of Electrical Engineering of CAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Institute of Electrical Engineering of CAS filed Critical Institute of Electrical Engineering of CAS
Priority to CN 200420009046 priority Critical patent/CN2722396Y/en
Application granted granted Critical
Publication of CN2722396Y publication Critical patent/CN2722396Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Particle Accelerators (AREA)

Abstract

The utility model discloses a rectangular permanent magnet which has big air gap, high magnetic field intensity and high field uniformity; the rectangular permanent magnet is composed of a plurality of main magnetic assembly blocks 4 and a pair of end magnetic assembly blocks 2. The rectangular permanent magnet is a hollow cuboid, the cross section of the rectangular permanent magnet is like the Chinese character 'hui' shape, and the symmetrical structure is adopted; the main magnetic assembly block 4 is composed of frame yokes 5 and 6, a poly-magnetic soft iron block 10, a main magnet block 7, a side magnet block 8, an edge magnet block 11 and a filler 12; the end magnetic assembly block 2 is composed of an end fixing object 13, an end fixing object 14 and an end magnet block 15. The rectangular permanent magnet effectively reduces leakage flux and considerably enhances the uniformity and the intensity of magnetic field in the working air gap as well as the service efficiency of magnetic steels; the rectangular permanent magnet has simple manufacturing process, and the rectangular permanent magnet can keep favorable uniformity of the magnetic field when the rectangular permanent magnet provides about 1T intensity of magnetic field; thus the rectangular permanent magnet is suitable for the principle display and the basis research of the big air gap, the high magnetic field intensity and the high field uniformity, and in addition, the rectangular permanent magnet is suitable for the industrial application.

Description

A kind of rectangle permanent-magnet
Technical field
The utility model relates to a kind of permanent-magnet, particularly the rectangle permanent-magnet.
Background technology
Along with greatly developing of the development of permanent magnetic material, particularly rare earth permanent-magnetic material, the maximum magnetic energy product and the excitation ability of permanent magnetic material are more and more higher, might realize higher magnetic field intensity and field uniformity, and therefore, the application of various permanent-magnets more and more widely.Because it is simple in structure, cheap, safeguards that easily not only many at present electromagnetism magnets are gradually by its replacement, and doing that principle shows and during basic research, also alternative sometimes superconducting magnet.Thereby the working gas gap and the magnetic field configuration of magnet comprised the magnetic field intensity and the uniformity, and more and more higher requirement has been proposed, develop to air gaps high field intensity permanent-magnet direction.
Existing air gaps permanent-magnet adopts C shape structure more, and as Chinese patent 94115507.2, the magnetic field intensity of its three embodiment is respectively 0.15T, 0.3T, 0.35T.Although the permanent-magnet manufacturing process of this structure is simple, with low cost,, be difficult to reach high magnetic field intensity and field uniformity preferably in the working gas gap because of leakage field is big.
The utility model content
The purpose of this utility model is to provide the air gaps high field intensity rectangle that a kind of leakage field is few, uniformity of magnetic field good, magnetic field intensity is high permanent-magnet at the defective that the permanent-magnet of above-mentioned C shape structure exists.
The technical solution adopted in the utility model is:
The utility model air gaps high field intensity rectangle permanent-magnet is a hollow cuboid, and cross section is back-shaped, and cuboid central authorities are the rectangle working gas gap.It adopts symmetrical structure, and is symmetrical up and down, left-right symmetric, axially symmetry; It is made up of n piece master magnetic building-blocks, pair of end magnetic building-blocks and some hold-down bolts, nut and screw, and the length sum of wherein main magnetic building-blocks and effective air gap diameter ratio are more than or equal to 2.5, promptly n · L 4 A π ≥ 2.5 , L is the axial length of main magnetic building-blocks, and A is that the cross-section of air gap is long-pending.Main magnetic building-blocks is made up of frame iron yoke, poly-magnetic soft iron piece, main magnetic patch, side magnetic patch, limit magnetic patch, filler; End magnetic building-blocks is made up of end fixture and end magnetic patch.
Main magnetic building-blocks is made up of trapezoidal poly-magnetic soft iron piece, rectangle master's magnetic patch, and central authorities are the rectangle working gas gap.Two long limits of rectangle working gas gap are respectively the minor face of two trapezoidal poly-magnetic soft iron pieces of its outside symmetric arrangement; And be glued with isometric rectangular main magnetic patch on the long limit of trapezoidal poly-magnetic soft iron piece; Two hypotenuses of trapezoidal poly-magnetic soft iron piece are respectively the long limit of two trapezoidal side magnetic patch of its outside symmetric arrangement; The two minor faces outside symmetric arrangement of rectangle working gas gap has equal-sized four rectangular edges magnetic patch, and two limit magnetic patch of every side have a long limit to overlap, and a minor face sum is the minor face of rectangle working gas gap, and another long limit is a hypotenuse of trapezoidal side magnetic patch; Another hypotenuse of trapezoidal side magnetic patch joins with the minor face of rectangle master magnetic patch and is concordant; The outside of main magnetic patch is furnished with rectangular shaped rim iron yoke, between frame iron yoke and side magnetic patch and the limit magnetic patch filler is arranged.
The profile of end magnetic building-blocks is identical with main magnetic building-blocks, in trapezoidal end magnetic patch is arranged, central authorities are the rectangle working gas gap, trapezoidal end magnetic patch is positioned at the outside of working gas gap, corresponding to the position of poly-magnetic soft iron piece in the main magnetic building-blocks, the end fixture of non-magnetic conduction is at the fixing trapezoidal end magnetic patch in the outside of trapezoidal end magnetic patch and working gas gap.
Adding bolt, hex nut and hexagon socket cap head screw at frame iron yoke and end fixture fixes magnet.
For main magnetic building-blocks and end magnetic building-blocks, the limit of all corresponding with it the poly-magnetic soft iron piece of being close to of the magnetizing direction of main magnetic patch, side magnetic patch is perpendicular; The minor face of the rectangle working gas gap of the magnetizing direction of limit magnetic patch and its formation is perpendicular; The magnetizing direction of end magnetic patch is perpendicular to the limit of the poly-magnetic soft iron piece of being close to it; The magnetizing direction of above-mentioned magnetic patch of two halves up and down that with the X-axis is symmetry axis is opposite, inwardly promptly is both or outwards is both.
After adopting such structure and magnetizing direction owing to be low-density filler between frame iron yoke and side magnetic patch and the limit magnetic patch, thereby reduced magnet weight; Owing to adopt trapezoidal poly-magnetic soft iron piece between main magnetic patch and working gas gap, this poly-magnetic soft iron piece is close to the long limit of Bian Weiqi of main magnetic patch, thereby has guaranteed magnetic flux density high in the working gas gap; Except both ends of the surface, working gas gap is surrounded by poly-magnetic soft iron piece and limit magnetic patch, has played the effect of guiding and constraint magnetic flux well, has improved the uniformity in magnetic field in the working gas gap; Magnetic flux in the working gas gap, except coming autonomous magnetic patch, some has improved the magnetic flux in the working gas gap from side magnetic patch and limit magnetic patch; Main magnetic patch, side magnetic patch, limit magnetic patch are end to end, the poly-magnetic soft iron piece that will be positioned at rectangle working gas gap both sides together with the end magnetic patch encases, make among its encirclement that places the same polarity magnet steel, thereby blocked leakage flux, the magnetic flux working gas gap that enters as much as possible that main magnetic patch is produced.Reduce leakage flux, improved magnetic flux density and the uniformity of magnetic field in the working gas gap.
Description of drawings
Fig. 1 is the front view of the utility model embodiment.Among the figure: 1 bolt hex nut, 2 end magnetic building-blocks, 3 hexagon socket cap head screws, 4 main magnetic building-blocks, 10 poly-magnetic soft iron pieces, 15 end magnetic patch;
Fig. 2 is the main magnetic building-blocks structural representation of the utility model embodiment.Among the figure: 5,6 frame iron yokes, 7 main magnetic patch, 8 side magnetic patch, 9 working gas gaps, 11 limit magnetic patch, 12 fillers;
Fig. 3 is the end magnetic building-blocks structural representation of the utility model embodiment.Among the figure: 13,14 end fixtures, 15 end magnetic patch, 16 working gas gaps;
Fig. 4 is a working gas gap when being of a size of 50mm*35mm, gets the magnetic line of force that 1/4th of magnet calculates gained and distributes.
Fig. 5 is that working gas gap is of a size of 50mm*35mm, when the axial length of magnet is 400mm, adopts Nd-Fe-B magnet steel, the magnetic field intensity distribution vertically of the working gas gap kernel of section point of actual measurement.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
The magnetizing direction of each magnetic patch is represented with N, S in Fig. 1～3.
The utility model shown in Figure 1 is by 4, two of six main magnetic building-blocks end magnetic building-blocks 2 and hold-down bolt, hex nut 1, and hexagon socket cap head screw 3 is formed.Magnet is about the X-axis symmetry, Y-axis symmetry, axially symmetry.
Main magnetic building-blocks 4 shown in Figure 2 is by frame iron yoke 5,6, main magnetic patch 7, and side magnetic patch 8, working gas gap 9, poly-magnetic soft iron piece 10, limit magnetic patch 11, and filler 12 is formed.Rectangle working gas gap 9 is surrounded by poly-magnetic soft iron piece 10 and limit magnetic patch 11.The outside symmetric arrangement of rectangle working gas gap 9 long limit a, a ' has trapezoidal poly-magnetic soft iron piece 10, and the outside of trapezoidal poly-magnetic soft iron piece 10 long limit c is main magnetic patch 7, and there is side magnetic patch 8 in hypotenuse d, the d ' outside; The rectangular edges magnetic patch 11 that two minor face b, the b ' outside symmetric arrangement of rectangle working gas gap 9 has four block sizes to equate; The outside of main magnetic patch 7 is furnished with rectangular shaped rim iron yoke 6, is filler 12 between frame iron yoke 5 and side magnetic patch 8 and the limit magnetic patch 11.Main magnetic patch 7, side magnetic patch 8 and limit magnetic patch 11 are end to end.
Two long limit a, a ' of rectangle working gas gap 9 are respectively the minor face of trapezoidal poly-magnetic soft iron piece 10; And be glued with isometric main magnetic patch 7 on the long limit c of trapezoidal poly-magnetic soft iron piece 10; Hypotenuse d, the d ' of trapezoidal poly-magnetic soft iron piece 10 is respectively the long limit of trapezoidal side magnetic patch 8; The rectangular edges magnetic patch 11 that four block sizes of two minor face b, the b ' outside symmetric arrangement of rectangle working gas gap 9 equate, two limit magnetic patch 11 of every side have a long limit to overlap, one minor face sum g+g ' is the minor face b or the b ' of rectangle air gap, and another long limit w is a hypotenuse of trapezoidal side magnetic patch 8; Another hypotenuse f of trapezoidal side magnetic patch 8 joins with the minor face e of rectangle master magnetic patch 7 and is concordant.
The profile of end magnetic building-blocks 2 shown in Figure 3 is identical with main magnetic building-blocks 4, in trapezoidal end magnetic patch 15 and working gas gap 16 are arranged, trapezoidal end magnetic patch 15 is positioned at the outside of working gas gap 16, corresponding to the position of poly-magnetic soft iron piece 10 in the main magnetic building-blocks 4, the end fixture 13,14 of non-magnetic conduction is at the fixing trapezoidal end magnetic patch 15 in the outside of trapezoidal end magnetic patch 15 and working gas gap 16.
Adding bolt, hex nut 1 and hexagon socket cap head screw 3 at frame iron yoke 5,6 and end fixture 13,14 fixes magnet.
Shown in Fig. 1～2, the limit of the corresponding poly-magnetic soft iron piece 10 that the magnetizing direction of main magnetic patch 7, side magnetic patch 8 all is close to it in the main magnetic building-blocks 4 is perpendicular; Minor face b, the b ' of the rectangle working gas gap 9 of the magnetizing direction of limit magnetic patch 11 and its formation are perpendicular; The magnetizing direction of end magnetic patch 15 is perpendicular to the limit of the corresponding poly-magnetic soft iron piece of being close to it 10; The magnetizing direction of above-mentioned magnetic patch of two halves up and down that with the X-axis is symmetry axis is opposite, promptly be both inwardly or outwards be both: the magnetizing direction of the main magnetic patch 7 around the poly-magnetic soft iron piece 10 of X-axis the first half, side magnetic patch 8, end magnetic patch 15 is for perpendicular to the limit of the corresponding poly-magnetic soft iron piece of being close to it 10 and point to the inside of poly-magnetic soft iron piece 10, and the magnetizing direction of two limit magnetic patch 11 of X-axis the first half is for perpendicular to minor face b, the b ' of rectangle working gas gap 9 and point to the inside of working gas gap 9; The magnetizing direction of the main magnetic patch 7 around the poly-magnetic soft iron piece 10 of X-axis the latter half, side magnetic patch 8, end magnetic patch 15 is for perpendicular to the limit of the corresponding poly-magnetic soft iron piece of being close to it 10 and point to the outside of poly-magnetic soft iron piece 10, and the magnetizing direction of two limit magnetic patch 11 of X-axis the latter half is for perpendicular to minor face b, the b ' of rectangle working gas gap 9 and point to the outside of working gas gap 9.Thereby make the poly-magnetic soft iron piece 10 on X-axis top and the encirclement that 1/2 working gas gap places N polarity magnet steel, the poly-magnetic soft iron piece 10 of X-axis bottom and the encirclement that 1/2 working gas gap places S polarity magnet steel, thereby blocked leakage flux, improved the magnetic flux density of working gas gap 9.
As shown in Figure 4, except having the leakage flux of a little near the limit magnetic patch in the junction of main magnetic patch and side magnetic patch and the working gas gap outside, the magnetic flux that main magnetic patch produces has all entered working gas gap by poly-magnetic soft iron piece basically; Magnetic flux in the working gas gap some from the limit magnetic patch; The magnetic line of force is close and even in the working gas gap.
As shown in Figure 5, from the length of axial centre point (0.0) to both sides 150mm, magnetic field intensity is equally distributed, about 0.87T; Drop to zero subsequently fast, in the about 30mm of distance both ends of the surface place FR, about 600 Gausses of opposing magnetic field intensity, this mainly is to consider after the Nd-Fe-B permanent magnetic magnet steel adds soft iron, magnetic flux is dispersed to the two ends soft iron, takes to paste the same polarity magnet steel add in both ends of the surface, promptly among Fig. 3 due to the trapezoidal end magnetic patch 15.
The utility model is compared with traditional C shape magnet, and under identical permanent magnetic material and axial length, both performances are as shown in the table.
Magnet structure Working gas gap area (cm 2) Average magnetic close (T) Average magnetic flux (W b.10 -4) Magnet steel consumption (kg) Magnetic flux (the W that the per kilogram magnet steel produces b.10 -4/kg)
C shape 17.5 0.35 6.125 36 0.170
Rectangle 17.5 0.87 15.225 36 0.423
As can be seen from the table, under all identical situation of working gas gap area, magnet steel consumption, axial length and permanent magnetic material, irony yoke, average flux density in the utility model working gas gap is 0.87T, the magnetic flux that the magnet steel of Unit Weight produces is 0.0000423Wb, be 2.5 times of C shape magnet, improved the service efficiency of magnet steel greatly; And the utility model can produce under air gaps up to the magnetic field intensity about 1T, can also keep the magnetic field good homogeneous simultaneously; On manufacturing process, the utility model magnetic patch simple in structure is easy to magnetize.Therefore, the utility model air gaps high field intensity rectangle permanent-magnet not only is fit to require the principle of air gaps, high field intensity to show and basic research also have higher utility, is fit to commercial Application equally.
Frame iron yoke 5,6 can also adopt other structure, all can be fillet as the outer right angle of iron yoke 5 among Fig. 4 Fig.a and iron yoke 5, the 6 interior right angle that forms that joins, shown in Fig.b.

Claims (4)

1, a kind of rectangle permanent-magnet is characterized in that: it is that cross section is back-shaped hollow cuboid, and cuboid central authorities are rectangle working gas gap [9], and the stage casing is some main magnetic building-blocks [4], and two ends are pair of end magnetic building-blocks [2]; Its structure is symmetry up and down, left-right symmetric, axially symmetry.
2, according to the said rectangle permanent-magnet of claim 1, it is characterized in that: rectangle working gas gap [9] is gathered magnetic soft iron piece [10] and limit magnetic patch [11] encirclement in the described main magnetic building-blocks [4]; The outside symmetric arrangement of the long limit [a] of rectangle working gas gap [9], [a '] has trapezoidal poly-magnetic soft iron piece [10], and the outside on the long limit of trapezoidal poly-magnetic soft iron piece [10] is main magnetic patch [7], and two hypotenuses of trapezoidal poly-magnetic soft iron piece [10] are close to the long limit of trapezoidal side magnetic patch [8]; The rectangular edges magnetic patch [11] that the two minor faces outside symmetric arrangement of rectangle working gas gap [9] has four block sizes to equate, two limit magnetic patch [11] of every side have a long limit to overlap, one minor face sum [g]+[g '] is minor face [b] or [b '] of rectangle air gap, and another long limit [w] is a hypotenuse of trapezoidal side magnetic patch [8]; Another hypotenuse [f] of trapezoidal side magnetic patch [8] joins with the minor face [e] of rectangle master magnetic patch [7] and is concordant; The outside of main magnetic patch [7] is furnished with rectangular shaped rim iron yoke [6], is filler [12] between frame iron yoke [5] and side magnetic patch [8] and the limit magnetic patch [11]; Main magnetic patch [7], side magnetic patch [8], limit magnetic patch [11] are end to end.
3, according to the said rectangle permanent-magnet of claim 1, it is characterized in that: the profile of end magnetic building-blocks [2] is identical with main magnetic building-blocks [4], in trapezoidal end magnetic patch [15] and working gas gap [16] are arranged, trapezoidal end magnetic patch [15] is positioned at the outside of working gas gap [16], corresponding to the position of poly-magnetic soft iron piece [10] in the main magnetic building-blocks [4], the end fixture [13] of non-magnetic conduction, [14] are at the fixing trapezoidal end magnetic patch [15] in the outside of trapezoidal end magnetic patch [15] and working gas gap [16].
4, according to any said rectangle permanent-magnet of claim 1 to 3, it is characterized in that: the limit of the poly-magnetic soft iron piece [10] that the magnetizing direction of main magnetic patch [7], side magnetic patch [8] all is close to it in the main magnetic building-blocks [4] is perpendicular; The minor face of the rectangle working gas gap [9] of the magnetizing direction of limit magnetic patch [11] and its formation is perpendicular; The magnetizing direction of end magnetic patch [15] is perpendicular to the poly-magnetic soft iron piece of being close to it [10]; The magnetizing direction of above-mentioned magnetic patch of two halves up and down that with the X-axis is symmetry axis is opposite, inwardly promptly is both or outwards is both.
CN 200420009046 2004-05-24 2004-05-24 Rectangular permanent magnet Expired - Fee Related CN2722396Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200420009046 CN2722396Y (en) 2004-05-24 2004-05-24 Rectangular permanent magnet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200420009046 CN2722396Y (en) 2004-05-24 2004-05-24 Rectangular permanent magnet

Publications (1)

Publication Number Publication Date
CN2722396Y true CN2722396Y (en) 2005-08-31

Family

ID=35012766

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200420009046 Expired - Fee Related CN2722396Y (en) 2004-05-24 2004-05-24 Rectangular permanent magnet

Country Status (1)

Country Link
CN (1) CN2722396Y (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105498093A (en) * 2016-02-03 2016-04-20 浙江和也健康科技有限公司 Magnetic field generating device for gyromagnetic bed and chair
CN105536149A (en) * 2016-02-03 2016-05-04 浙江和也健康科技有限公司 High energy gyromagnetic device and gyromagnetic chair structure
CN105727447A (en) * 2016-02-03 2016-07-06 浙江和也健康科技有限公司 Novel gyromagnetic equipment

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105498093A (en) * 2016-02-03 2016-04-20 浙江和也健康科技有限公司 Magnetic field generating device for gyromagnetic bed and chair
CN105536149A (en) * 2016-02-03 2016-05-04 浙江和也健康科技有限公司 High energy gyromagnetic device and gyromagnetic chair structure
CN105727447A (en) * 2016-02-03 2016-07-06 浙江和也健康科技有限公司 Novel gyromagnetic equipment
CN105498093B (en) * 2016-02-03 2018-06-15 浙江和也健康科技有限公司 A kind of gyromagnet bed, chair field generator for magnetic
CN105727447B (en) * 2016-02-03 2018-09-21 浙江和也健康科技有限公司 A kind of novel rotary magnetic machine
CN105536149B (en) * 2016-02-03 2019-03-08 浙江和也健康科技有限公司 A kind of energetic rotary chinaware and gyromagnet armchair structure
US10940326B2 (en) 2016-02-03 2021-03-09 Heye Health Technology Co., Ltd. Device with high energy rotating magnet and massage chair structure with rotating magnet

Similar Documents

Publication Publication Date Title
CN102856032B (en) A kind of installation method of Halbach structure permanent magnet
CN2722396Y (en) Rectangular permanent magnet
CN111762028A (en) Magnetic suspension train system and suspension track thereof
CN109137644A (en) A kind of permanent magnet suspension track assembly tooling and its assembly method
CN111009407A (en) Assembling process method of Halbach array magnet assembly
CN85103498A (en) The permanent-magnet of magnetic field of high uniformity
CN1172563C (en) Hybrid wiggler
CN219738669U (en) Linear magnetic bar
CN106286665A (en) Adjustable non-linear double-layer vibration isolating device
CN209292800U (en) A kind of permanent magnet suspension track assembly tooling
CN206889423U (en) Aluminium section bar three-dimensional connector
CN201554575U (en) Pipeline access type fuel oil magnetizing device
CN219682851U (en) Linear magnetic bar
CN208034421U (en) A kind of the linear guide processing electric permanent-magnet suction disc
CN206405850U (en) A kind of electric motor end cap overlap descaling machine
CN1855689A (en) Magnetic engine with single wheel and double poles
CN212773154U (en) Steel structure upright post for prefabricated house
CN111799055B (en) Magnetizing and using method of polygonal magnetic steel
KR100779269B1 (en) Apparatus for generating water that form hexagon ring structure
CN215586785U (en) Magnetoelectric vertical field coagulation device
JP2003254175A (en) Magnetic processing device for fuel
CN219498580U (en) High cabinet body switch board convenient to transport
CN202576283U (en) Multifunctional composite magnetization device in magnetic fertilizer manufacture
CN216528274U (en) Fluid magnetizer
CN220754447U (en) Anti-demagnetizing type rotor core

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee