CN203228775U - High-efficiency permanent magnetic and magnetic gathering type guide rail mechanism suitable for high-temperature superconducting magnetic suspension system - Google Patents
High-efficiency permanent magnetic and magnetic gathering type guide rail mechanism suitable for high-temperature superconducting magnetic suspension system Download PDFInfo
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Abstract
The utility model discloses a high-efficiency permanent magnetic and magnetic gathering type guide rail mechanism suitable for a high-temperature superconducting magnetic suspension system. The high-efficiency permanent magnetic and magnetic gathering type guide rail mechanism suitable for the high-temperature superconducting magnetic suspension system comprises a permanent magnetic opposed combination which is formed by a plurality of permanent magnets and a permanent magnetic guiding combination which is formed by a plurality of permanent magnets. The high-efficiency permanent magnetic and magnetic gathering type guide rail mechanism suitable for the high-temperature superconducting magnetic suspension system is characterized in that the mutual repulsion effect between magnetic poles of the permanent magnets of the permanent magnetic opposed combination is utilized to produce strong magnetic pressure and the own magnetizing direction of the permanent magnets of the permanent magnetic guiding combination is utilized to enable magnetic energy of the permanent magnetic opposed combination and the permanent magnetic guiding combination to be guided and spread to the upper surface and the upper portion area of a permanent magnetic guide rail to be utilized by high-temperature superconducting block materials. The high-efficiency permanent magnetic and magnetic gathering type guide rail mechanism suitable for the high-temperature superconducting magnetic suspension system has the advantages of overcoming the defects that the using efficiency of the magnetic energy is low due to the fact that ferromagnetic materials are utilized to guide a magnetic circuit in the existing permanent magnetic guide rail mechanisms for high-temperature superconducting magnetic suspension systems, being capable of effectively improving the using efficiency of magnetic energy storage of the permanent magnetic guide rail based on the condition that magnetic field indexes required by the magnetic suspension system are satisfied and meanwhile being beneficial to the improvement of the integral performance of the high-temperature superconducting magnetic suspension system from the angle of magnetic field configuration and magnetic energy distribution.
Description
Technical field
The utility model belongs to the high-temperature superconducting magnetic levitation technology, relates to a kind of permanent magnetism concentrated magnetic guide rail mechanism that can effectively improve high temperature superconducting magnetic suspension system magnetic energy utilization efficient.
Background technology
Based on high-temperature superconductor (HTS) magnetic levitation technology of the high-temperature superconducting block that possesses the flux pinning ability because of its peculiar driven suspension characteristic, need not ACTIVE CONTROL and can realize stable suspersion, both eliminate the frictional loss in traditional physical construction, also avoided research and development and the input of control technology and equipment in the suspension system initiatively.The high-temperature superconducting magnetic levitation technology is simple in structure with it, principle reliable, the characteristic of superior performance, the ideal that becomes practical magnetic levitation technology one of is selected, have broad application prospects with many applications such as emission, magnetic suspension bearings at high-speed rail transportation, extensive electromagnetism energy storage technology, electromagnetic launch, its low energy consumption that possesses, high reliability, many advantages such as pollution-free also make one of its ideal selection that becomes development green energy resource industry.
High-temperature superconducting maglev train is the representative that the high-temperature superconducting magnetic levitation technology is used in field of track traffic, because it has overcome the viscous friction power of wheel rail system, and need not the supply of ACTIVE CONTROL or extra power and can realize stable suspersion and guiding, eliminated the magnetic-levitation traffic system that adopts active control technology at a high speed or the control response Time Delay that may exist under the hyper-speed running state, thus be at a high speed or the ideal of hyper-speed Rail Transit System select.In the end of the year 2000, manned high-temperature superconducting magnetic levitation laboratory vehicle " new century edition " indicates that in Chinese Chengdu Success in Experiment the high-temperature superconducting magnetic levitation technology is in the important breakthrough of track traffic application.
With the employing active control technology, electromagnetic suspension (EMS) train that utilizes the realization of electromagnetic attraction and electromagnetic induction repulsive force to suspend is respectively compared with electrodynamics suspension (EDS) train, the suspension certainly that the permanent current realization that high-temperature superconducting maglev train relies on the electromagnetic induction effect between high-temperature superconducting block and the external magnetic field excitation to produce is stable.In high temperature superconducting magnetic suspension system, except this external magnetic field excitation induction of needs produces the inner permanent current of high-temperature superconducting block, also need it to stablize and continue to exist certain hour, to keep stable suspersion state and the high-speed cruising of high-temperature superconductor magnetic-levitation train.
Compare with electromagnet, having high energy product and strong coercitive permanent magnet is to produce more preferably selecting of this external magnetic field excitation under the prior art condition, it not only has higher energy density, volume required littler under the prerequisite that same external magnetic field excitation energy is provided, weight is lighter, effectively minimizing system takes up room and weight, and need not to introduce energy resource supply device and ventilation heat abstractor, having saved a large amount of relevant devices drops into, reduce the complexity of system, improved safety and the serviceability of system.
Because the specific (special) requirements of high temperature superconducting magnetic suspension system, the external magnetic field that permanent magnet provides encourages need satisfy at certain specific direction has high magnetic field intensity and field gradient, then need the specific (special) requirements satisfying no field gradient and possess the highfield degree of uniformity at another specific direction, thereby can not only rely on the monolithic permanent magnet that this magnetic field excitation is provided, and need introduce special permanent magnetism unitized construction, the splicing of polylith permanent magnet is assembled, constitute a permanent magnet mechanism of finishing, when being applied to levitated superconducting magnet train, be referred to as permanent magnetic guideway usually.
The high-temperature superconducting maglev train permanent magnetic guideway that extensively adopts is iron concentrated magnetic structure at present, namely utilize the strong magnetic pressure of the opposed combination results of the opposite permanent magnet of the direction of magnetization, assemble magnetic field and the magnetic line of force guiding of the opposed combination of permanent magnet is dissipated into the work area of high-temperature superconducting block with ferromagnetic material, its typical structure and Distribution of Magnetic Field are as shown in Figure 1.The magnetic field that permanent magnetic guideway provides not only needs to have high field gradient, so that high-temperature superconducting block produces bigger vertical lift force, simultaneously also need to have high magnetic-field intensity, in order to can produce bigger horizontal restoring force during high-temperature superconducting block generation side travel.Employed this permanent magnet mechanism of manned high-temperature superconducting magnetic levitation laboratory vehicle " new century edition " is guide rail form, and has obtained at present using widely in whole world homogeneous system.It should be noted that, permanent magnetic guideway shown in Figure 1 has three poly-magnet, poly-magnet is main poly-magnetic pole wherein, its effect of bearing is with the magnetic line of force gathering and diffuses to higher area of space, the poly-magnet in the left and right sides is auxiliary poly-magnetic pole, the effect that its magnetic line of force of mainly main poly-magnetic pole being dispersed plays gathering, reclaims is so that faster, more concentrated the entering in two horizontally-opposed permanent magnet magnetic circuits shown in Figure 1 of magnetic line of force reduces the invalid space of dispersing of magnetic energy.Under some non-essential situation, can omit the auxiliary poly-magnet of the left and right sides, it can't cause obvious influence to the main magnetic circuit of permanent magnetic guideway.
The unfavorable factor that existing iron concentrated magnetic permanent magnetic guideway exists is that its magnetic field energy availability is lower.Assemble magnetic field owing to use ferromagnetic material, and the opposed combination of permanent magnet itself does not have the magnetic circuit guide function, therefore its Distribution of Magnetic Field has laterally zygomorphic characteristics, and namely the divergent magnetic field of its upper surface and lower surface is in full accord, shown in Distribution of Magnetic Field computing value among Fig. 1.Because permanent magnetic guideway not only will provide the external magnetic field excitation for high-temperature superconducting block, it also will play the weight-bearing function of rail in similar traditional wheel track traffic simultaneously, namely need to carry high-temperature superconducting maglev train and passenger's total weight, and permanent-magnet material itself is a kind of functional material, its structural strength and mechanical pressure resistance are less, thereby it must rationally be positioned on the load-bearing basis, plays effect rather than the power carrying effect of power conduction.Under prior art condition and permanent-magnet material characteristic background, the permanent magnetic guideway lower surface need be connected with basic load bearing component, therefore only has the magnetic field energy of upper surface can supply the utilization of high temperature superelevation bulk, and whole magnetic energy utilization rate is low, cause the permanent magnetic guideway structural redundancy, increased its cost.
Therefore, need find and a kind ofly can satisfy the high-temperature superconducting block stable suspersion, can effectively improve permanent magnetic guideway optimization method or the structure of permanent magnetic guideway magnetic energy utilization efficient again, namely under the prerequisite that does not change the guide rail profile factor, distribute or the mode of combination by the magnetic material function, most of magnetic storage energy of permanent magnet is guided to upper surface and the above space of guide rail, to improve the work efficiency of suspension system, reduce the permanent magnetism consumption, reduce system cost.Groundwork of the present invention is that the direction of magnetization of utilizing permanent-magnet material self to have reaches the purpose that guiding magnetic field is dispersed.Be different from ferromagnetic material and need in externally-applied magnetic field, could realize the orderly arrangement of magnetic domain, permanent-magnet material is after the production and processing moulding, just can realize the orderly arrangement of magnetic domain through disposable magnetizing, thereby possess the direction of magnetization, and be permanent the existence under the situation in this direction of magnetization reinforcement reverse (moving back) magnetic field outside not having.Compare with ferromagnetic material, permanent-magnet material not only can play the effect in magnetic field excitation source in magnetic circuit, simultaneously also can utilize its direction of magnetization, i.e. the no divergence characteristic of static magnetic field and the closed loop distribution characteristics of magnetic line of force realize the guide function of magnetic circuit.
Summary of the invention
Purpose of the present invention: a kind of permanent magnetic guideway mechanism that is applicable to high temperature superconducting magnetic suspension system is provided, making this permanent magnet mechanism not only satisfy simple and reliable for structure, magnetic field disperses outside the basic fundamental conditions such as space height, field gradient be big, the magnetic field energy actv. of permanent-magnet material can also be diffused to certain spatial areas, be beneficial to magnetic field and utilized by high-temperature superconducting block, thus the task performance of raising high temperature superconducting magnetic suspension system.
Technical scheme: a kind of efficient permanent magnet concentrated magnetic guide rail mechanism that is applicable to high temperature superconducting magnetic suspension system, comprise the opposed combination of the permanent magnetism that is formed by the several piece permanent magnet, and the permanent magnetism that is formed by several piece permanent magnet guiding combination, it is characterized in that, the opposed combination utilization of the described permanent magnetism wherein mutual repulsion effect between the magnetic pole of each permanent magnet produces strong magnetic pressure, the direction of magnetization that the combination of described permanent magnetism guiding utilizes permanent magnet self wherein to possess, the magnetic energy of the opposed combination of described permanent magnetism and the combination of permanent magnetism guiding is diffused to permanent magnetic guideway upper surface and upper area, for the high-temperature superconducting block utilization;
The opposed combination of described permanent magnetism is made up of first permanent magnet 1, second permanent magnet 2 and the 5th permanent magnet 5, and the combination of described permanent magnetism guiding is made up of the 3rd permanent magnet 3 and the 4th permanent magnet 4; First permanent magnet 1, the 4th permanent magnet 4, second permanent magnet 2, the 3rd permanent magnet 3, the 5th permanent magnet 5 closely connect successively, and the space phase of its direction of magnetization is respectively 0 degree, 90 degree, 180 degree, 270 degree and 360 degree (0 degree), differs 90 degree successively;
Perhaps, described opposed combination is made up of first permanent magnet 1, second permanent magnet 2, and the combination of described permanent magnetism guiding only is made up of the 4th permanent magnet 4; First permanent magnet 1, the 4th permanent magnet 4, second permanent magnet 2 closely connect successively, and the space phase of its direction of magnetization is respectively 0 degree, 90 degree, 180 degree, differs 90 degree successively;
Described permanent magnetism concentrated magnetic guide rail mechanism also can increase the auxiliary poly-magnetic pole 6 in two sides of connection in both sides respectively, it is made by ferromagnetic material, the effect that the magnetic line of force that combination is dispersed to described permanent magnetism guiding plays gathering, reclaims, so that in faster, the more concentrated magnetic circuit that enters the opposed combination results of described permanent magnetism of magnetic line of force, reduce the invalid space of dispersing of magnetic energy;
Described permanent magnet is all selected the high energy product permanent-magnet material for use, as permanent magnets such as nd-fe-bs; And select high coercive permanent-magnetic material for use as far as possible, with the permanent-magnet material demagnetization phenomenon of avoiding may causing more by force owing to local gathering magnetic field;
The dimension scale of the combination of described permanent magnetism guiding and the opposed combination of permanent magnetism in conjunction with the self-characteristic of permanent-magnet material, is calculated and the experimental verification choose reasonable by the numerical analysis simulative optimization; For avoiding the demagnetization phenomenon that permanent magnet may occur under the situation that strong reverse or demagnetizing field is arranged, avoid using narrow or thin excessively permanent magnet;
Described permanent magnet uses accurate line cutting or other high precision job operation as far as possible when machine-shaping, to reduce the profile error that permanent magnet causes owing to processing;
Described permanent magnet is after machine-shaping, and the surface is carried out zinc-plated or other protective treatment, to avoid permanent magnet to be corroded the generation oxidation by moisture or to be corroded by other chemical substance;
Described permanent magnet requires its magnetic energy product error less than 2% after completing, and avoids causing the irregularity in permanent magnet mechanism specific direction magnetic field because big error appears in magnetic energy product, and then has influence on the magnetic suspension system serviceability;
Described permanent magnet is chosen same batch of raw-material permanent-magnet material as far as possible, with the permanent magnet performance fluctuation of avoiding being caused owing to raw MAT'L difference, and the irregularity in caused permanent magnet mechanism specific direction magnetic field;
Described permanent magnet must make up via solid and reliable mode and be fixing, in order to avoid the loosening of permanent-magnet material occur and come off, permanent-magnet material combination fixed form comparatively commonly used at present is lateral direction penetrating formula bolt;
In the above-mentioned permanent magnet mechanism with divergent magnetic field to the magnetic circuit of work area opposite to magnetic circuit in ferromagnetic material can not appear, to avoid because magnetic circuit short circuit and magnetic field can't be diffused to the work area of appointment;
In the above-mentioned permanent magnet mechanism, can use ferromagnetic material in some specific region, with the aggregation intensity that strengthens magnetic line of force or the invalid radiating area that reduces magnetic line of force;
When finishing above-mentioned technological design and processing, also can increase some safety devices according to actual needs, to avoid because the potential safety hazard that external impacts or permanent magnet breakage may cause.
Advantage of the present utility model and beneficial effect:
Compared with prior art, advantage of the present utility model and characteristics are:
1, the magnetic circuit directivity is clear and definite.The tradition permanent magnetic guideway adopts ferromagnetic material to assemble magnetic field, and ferromagnetic material itself does not have the direction of magnetization, can not play guiding function in magnetic circuit, therefore symmetry about the Distribution of Magnetic Field of traditional permanent magnetic guideway.The present invention utilizes permanent magnet self to possess the characteristic of the direction of magnetization, the permanent magnet combination is combined with magnetic Circuit Design, the laterally zygomorphic magnetic field structure of the guide rail that breaks traditions, make the magnetic circuit of permanent magnetic guideway have clear and definite directivity, magnetic energy can be guided to space or the position of required arrival, thereby can be utilized by the outside better.
2, magnetic energy utilization efficient height.The magnetic field of existing permanent magnetic guideway has up-down symmetry, and the guide rail lower surface must be connected with shoring of foundation, so has only the magnetic energy in upper surface and above zone to be utilized, and its magnetic energy utilization efficient is on the low side.The present invention utilizes the direction of magnetization of permanent-magnet material itself to carry out the magnetic circuit guiding, most of magnetic energy effectively can be gathered guide rail upper surface and above zone, thereby can significantly improve the task performance of magnetic suspension system.
3, structure is changeable, and is widely applicable.The present invention's adjustable parameter on the permanent magnetism unitized construction is more, can make up size and the ratio adjustment is satisfied the real work requirement and adapted to the high-temperature superconducting block arrangement mode by permanent magnetism.Compare with permanent magnet mechanism with existing high temperature superconducting magnetic suspension system, the present invention helps to reduce the height of permanent magnet mechanism, satisfies the system requirements strict to whole height.
4, expansibility is good.Existing high temperature superconducting magnetic suspension system adopts ferromagnetic material guiding magnetic circuit with permanent magnet mechanism, when carrying out the expansion of magnet width, because the high susceptibility of ferromagnetic material, it can produce strong sucking action to magnetic line of force, and then obviously reduce magnetic field disperse the height, magnetic energy is strapped in the permanent magnet mechanism near surface, thereby when being applied to the high-temperature superconducting maglev train system, it can't satisfy the specific (special) requirements of dispersing height for magnetic field.The present invention adopts the method for permanent-magnet material guiding magnetic circuit, in conjunction with different permanent magnet combination and arrangement modes, not only can carry out horizontal direction, the geometric ratio that is the magnet width is expanded, also can effectively guarantee the height of dispersing in magnetic field, satisfy the technical requirements of maglev train system, the raising that the sinusoidal magnetic field structure of using permanent magnetic guideway of the present invention to produce under some particular combination also can be the maglev train system steering capability provides the optimization approach.
In a word, the utility model has changed the lower shortcoming of magnetic energy utilization efficient that existing high temperature superconducting magnetic suspension system causes with permanent magnetic guideway mechanism employing ferromagnetic material guiding magnetic circuit, on the basis of the magnetic field index that guarantees to satisfy the magnetic suspension system requirement, can effectively improve the utilization ratio in permanent magnetic guideway magnetic field, from the angle of magnetic field configuration, magnetic energy distribution, the present invention helps the lifting of high temperature superconducting magnetic suspension system overall performance simultaneously.
Description of drawings
Fig. 1 is the structural representation of conventional iron concentrated magnetic permanent magnetic guideway mechanism;
Fig. 2 is the Distribution of Magnetic Field scheme drawing of conventional iron concentrated magnetic permanent magnetic guideway mechanism;
Fig. 3 is the end face structure scheme drawing that permanent magnetic guideway of the present invention mechanism is applied to high-temperature superconducting maglev train, wherein:
C. high-temperature superconducting maglev train car body, the vehicle-mounted low-temperature (low temperature) vessel of d. and high-temperature superconducting block, e. advances with linear electric machine secondary, and the f. linear electric machine is elementary, g. tracks of permanent magnetism, h. load-bearing Infrastructure;
Fig. 4 is the structure design generalized section of permanent magnetic guideway mechanism for implementing example one;
Fig. 5 is the Distribution of Magnetic Field scheme drawing of permanent magnetic guideway mechanism for implementing example one;
Fig. 6 is that the Distribution of Magnetic Field A-A collimation method of permanent magnetic guideway mechanism for implementing example one is to the magnetic field value scheme drawing;
Fig. 7 is permanent magnetic guideway mechanism for implementing example two structure design generalized sections;
Fig. 8 is the Distribution of Magnetic Field scheme drawing of permanent magnetic guideway mechanism for implementing example two;
Fig. 9 is the Distribution of Magnetic Field B-B line magnetic field value scheme drawing of permanent magnetic guideway mechanism for implementing example two.
The specific embodiment
In order to make the purpose, technical solutions and advantages of the present invention clearer, describe the present invention below in conjunction with the drawings and specific embodiments.
Fig. 1 and Fig. 2 show structural representation and the Distribution of Magnetic Field scheme drawing thereof of conventional iron concentrated magnetic permanent magnetic guideway mechanism, as can be seen, assemble magnetic field owing to use ferromagnetic material, and the opposed combination of permanent magnetism itself does not have the magnetic circuit guide function, therefore its Distribution of Magnetic Field has laterally zygomorphic characteristics, the divergent magnetic field that is its upper surface and lower surface is in full accord, under prior art condition and permanent-magnet material characteristic background, the permanent magnetic guideway lower surface need be connected with basic load bearing component, therefore only there is the magnetic field energy of upper surface can supply the utilization of high temperature superelevation bulk, whole magnetic energy utilization rate is low, causes the permanent magnetic guideway structural redundancy, has increased its cost.
Fig. 3 illustrates, a kind of specific embodiment that the present invention is applied to high-temperature superconducting maglev train is: be installed on the load-bearing basis in order to the permanent magnetic guideway of the required external magnetic field of high-temperature superconducting maglev train smooth operation excitation to be provided, the high-temperature superconducting maglev train car body, the propelling that is loaded into the car body bottom is secondary with linear electric machine, vehicle-mounted low-temperature (low temperature) vessel and be placed in high-temperature superconducting block in the low-temperature (low temperature) vessel, and linear electric machine is elementary, and itself and permanent magnetic guideway all are fixed on the load-bearing Infrastructure.Shown in vehicle-mounted high-temperature superconducting block with shown in permanent magnetic guideway produce the bearing force keep the high-temperature superconducting maglev train stable suspersion by electromagnetic coupled, and when laterally offset appears in magnetic suspension train the horizontal restoring force of generation, guarantee its lateral stability.High-temperature superconducting maglev train under suspended state, shown under linear motor system promotes, can realize at a high speed or hyper-velocity smooth operation.
Fig. 4 illustrates a kind of Application Example one of the present invention, and in this embodiment, the usage space direction of magnetization differs the permanent magnet combination of 90 degree successively, and the guiding permanent magnet magnetic energy is dissipated into guide rail upper surface and above zone.The direction of magnetization of each permanent magnet all illustrates with arrow in embodiment illustrated in fig. 4.The permanent magnet that constitutes the opposed combination of permanent magnetism among the figure is first permanent magnet 1, second permanent magnet 2 and the 5th permanent magnet 5, and it can utilize two mutual repulsion effects between the magnetic pole, produces strong magnetic pressure; The permanent magnet that constitutes the combination of permanent magnetism guiding among the figure is the 3rd permanent magnet 3 and the 4th permanent magnet 4, the direction of magnetization that it utilizes permanent-magnet material self to possess, the opposed combination magnet of permanent magnetism and the guiding of self magnetic energy are diffused to permanent magnetic guideway upper surface and upper area, for the high-temperature superconducting block utilization.The characteristics of embodiment 1 are that first permanent magnet 1 among the figure, the 4th permanent magnet 4, second permanent magnet 2, the 3rd permanent magnet 3, the 5th permanent magnet 5 closely connect successively, the space phase of its direction of magnetization is respectively 0 degree, 90 degree, 180 degree, 270 degree and 360 degree (0 degree), be that space phase differs 90 degree successively, constitute a complete sinusoidal function circulation (360 degree); The auxiliary poly-magnetic pole 6 in side among the figure, its radical function is the effect that the magnetic line of force that the 3rd permanent magnet 3 among the figure and the 4th permanent magnet 4 are dispersed is played gathering, reclaims, so that faster, more concentrated the entering in the permanent magnet magnetic circuit that first permanent magnet 1 among the figure, second permanent magnet 2 and the 5th permanent magnet 5 constitute of magnetic line of force, reduce the invalid space of dispersing of magnetic energy, its function with auxiliary poly-magnet shown in Figure 1 is identical.In some occasion, can not use the auxiliary poly-magnetic pole 6 in side among the figure, can't cause obvious influence to the performance of this permanent magnet mechanism.
Should be noted that, although the direction of magnetization of the 3rd permanent magnet 3 among Fig. 4 is pointed to the permanent magnetic guideway lower surface, but the subsystem that first permanent magnet 1 among the figure, second permanent magnet 2 and the 5th permanent magnet 5 constitute still can gather the permanent magnetic guideway upper surface with most of magnetic energy, and this is because the sinuso sine protractor of main magnetic circuit structure determines; The 3rd permanent magnet 3 among the figure and the 4th permanent magnet 4 should avoid thin situation to occur when design, otherwise the strong magnetic pressure that the opposed combination magnet of permanent magnetism produces may cause that magnetic steering with the demagnetization of permanent magnet, influences its serviceability.By rational size design, in certain height, permanent magnet mechanism shown in Figure 4 can will surpass 70% magnet energy spread to guide rail upper surface and above space, compare with permanent magnetic guideway with the existing high-temperature superconducting maglev train that only uses the ferromagnetic material divergent magnetic field, its upper space magnetic field utilization ratio can improve 30-40%.
As shown in Figure 5, the magnetic line of force of the permanent magnetic guideway among the embodiment one obviously concentrates on upper surface and the above zone of guide rail, illustrate that this zone magnetic energy density is higher than the guide rail lower surface and with lower area, distinguish obvious with the laterally zygomorphic divergent magnetic field of traditional permanent magnetic guideway shown in Figure 1.Partly follow the example of to magnetic field value (this place is apart from guide rail upper surface 5mm) along the line of A-A shown in Fig. 5, its result as shown in Figure 6.Can see, the direction of magnetization just because of first permanent magnet 1 among Fig. 4, the 4th permanent magnet 4, second permanent magnet 2, the 3rd permanent magnet 3, the 5th permanent magnet 5 differs 90 degree successively, thereby constitute a complete sinusoidal closed loop, namely 360 degree present tangible sinusoidal structured so its 5mm that disperses highly locates magnetic field value.The sinusoidal magnetic field characteristic that this permanent magnet mechanism possesses not only makes it have higher upper surface magnetic energy utilization efficient, and in actual applications, can help for the elevator belt of high-temperature superconducting block composite entity suspension property, particularly lateral stability.
Fig. 7 illustrates, and the structure of the embodiment of the invention two is used monolithic permanent magnet guiding magnetic circuit, and magnetic energy is dissipated into guide rail upper surface and above zone.The direction of magnetization of each permanent magnet all illustrates with arrow in embodiment illustrated in fig. 7.The permanent magnet of the opposed combination of formation permanent magnetism is first permanent magnet 1, second permanent magnet 2 among Fig. 7, and it can utilize two mutual repulsion effects between the magnetic pole, produces strong magnetic pressure.Poly-magnetic permanent magnet 4 among the figure, the purpose that it mainly plays the magnetic circuit guiding namely guides magnetic energy to be dissipated into guide rail upper surface and above zone, for outside superconductor utilization.Auxiliary poly-magnet 6 among Fig. 7, its function and Fig. 1 and auxiliary poly-magnet function shown in Figure 4 are identical, and magnetic line of force is played the effect of gathering of reclaiming, and after omitting the permanent magnetic guideway main magnetic circuit are not had influence substantially.The 4th permanent magnet 4 among Fig. 7 should avoid thin situation to occur when design, otherwise the strong magnetic pressure that the opposed combination magnet of permanent magnetism produces may cause that magnetic steering with the demagnetization of permanent magnet, influences its serviceability.
[0048] shown in Figure 8, the magnetic field of the permanent magnetic guideway of embodiment two also presents significantly asymmetry up and down, the magnetic field in upper surface and above space obviously is better than lower surface area, show that the poly-magnetic permanent magnet shown in 4 among Fig. 7 has played the effect of magnetic circuit guiding really, is about to magnetic energy and guides to surface area.Different with embodiment one is, the direction of magnetization of first permanent magnet 1 among Fig. 7, the 4th permanent magnet 4, second permanent magnet 2 is respectively 0 degree, 90 degree and 180 degree, namely only constitute half of sinusoidal function circulation, so its normal direction Distribution of Magnetic Field presents unimodal feature, as shown in Figure 9.Similar with embodiment one, embodiment two also can effectively strengthen the magnetic storage energy that can supply superconductor to utilize on the permanent magnetic guideway, and then effectively promotes the integral working of high temperature superconducting magnetic suspension system.
Claims (5)
1. efficient permanent magnet concentrated magnetic guide rail mechanism that is applicable to high temperature superconducting magnetic suspension system, comprise the opposed combination of the permanent magnetism that is formed by the several piece permanent magnet, and the permanent magnetism that is formed by several piece permanent magnet guiding combination, it is characterized in that, the opposed combination utilization of the described permanent magnetism wherein mutual repulsion effect between the magnetic pole of each permanent magnet produces strong magnetic pressure, the direction of magnetization that the combination of described permanent magnetism guiding utilizes permanent magnet self wherein to possess, the magnetic energy guiding of the opposed combination of described permanent magnetism and the combination of permanent magnetism guiding is diffused to permanent magnetic guideway upper surface and upper area, for the high-temperature superconducting block utilization.
2. according to the described efficient permanent magnet concentrated magnetic of claim 1 guide rail mechanism, it is characterized in that, the opposed combination of described permanent magnetism is made up of first permanent magnet (1), second permanent magnet (2) and the 5th permanent magnet (5), and the combination of described permanent magnetism guiding is made up of the 3rd permanent magnet (3) and the 4th permanent magnet (4); First permanent magnet (1), the 4th permanent magnet (4), second permanent magnet (2), the 3rd permanent magnet (3), the 5th permanent magnet (5) closely connect successively, the space phase of its direction of magnetization is respectively 0 degree, 90 degree, 180 degree, 270 degree and 360 degree, differs 90 degree successively.
3. according to the described efficient permanent magnet concentrated magnetic of claim 1 guide rail mechanism, it is characterized in that described opposed combination is made up of first permanent magnet (1), second permanent magnet (2), the combination of described permanent magnetism guiding only is made up of the 4th permanent magnet (4); First permanent magnet (1), the 4th permanent magnet (4), second permanent magnet (2) closely connect successively, and the space phase of its direction of magnetization is respectively 0 degree, 90 degree, 180 degree, differs 90 degree successively.
4. according to claim 2 or 3 described efficient permanent magnet concentrated magnetic guide rail mechanisms, it is characterized in that described permanent magnetism concentrated magnetic guide rail mechanism also can increase the auxiliary poly-magnetic pole (6) in two sides of connection in both sides respectively, it is made by ferromagnetic material.
5. according to the described efficient permanent magnet concentrated magnetic of arbitrary claim guide rail mechanism among the claim 1-3, it is characterized in that described each permanent magnet makes up with fixing via solid and reliable mode.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201320106697 CN203228775U (en) | 2013-03-08 | 2013-03-08 | High-efficiency permanent magnetic and magnetic gathering type guide rail mechanism suitable for high-temperature superconducting magnetic suspension system |
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| CN 201320106697 CN203228775U (en) | 2013-03-08 | 2013-03-08 | High-efficiency permanent magnetic and magnetic gathering type guide rail mechanism suitable for high-temperature superconducting magnetic suspension system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103129563A (en) * | 2013-03-08 | 2013-06-05 | 北京宇航世纪超导技术有限公司 | High-efficient permanent magnet gathering type guide rail mechanism suitable for high-temperature superconductive maglev system |
| CN105691408A (en) * | 2016-03-24 | 2016-06-22 | 西南交通大学 | Magnetic field extra-high structure of high-temperature superconductivity magnetic suspension permanent magnet railway |
| CN107776434A (en) * | 2017-11-08 | 2018-03-09 | 西南交通大学 | Permanent magnetic guideway, superconducting magnetic suspension system and unilateral high-intensity magnetic field generation device |
| CN109532508A (en) * | 2018-11-21 | 2019-03-29 | 彭国洪 | A kind of U-shaped magnetic suspension mode of train |
-
2013
- 2013-03-08 CN CN 201320106697 patent/CN203228775U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103129563A (en) * | 2013-03-08 | 2013-06-05 | 北京宇航世纪超导技术有限公司 | High-efficient permanent magnet gathering type guide rail mechanism suitable for high-temperature superconductive maglev system |
| CN105691408A (en) * | 2016-03-24 | 2016-06-22 | 西南交通大学 | Magnetic field extra-high structure of high-temperature superconductivity magnetic suspension permanent magnet railway |
| CN105691408B (en) * | 2016-03-24 | 2018-12-25 | 西南交通大学 | High-temperature superconducting magnetic levitation tracks of permanent magnetism magnetic field super-high structure |
| CN107776434A (en) * | 2017-11-08 | 2018-03-09 | 西南交通大学 | Permanent magnetic guideway, superconducting magnetic suspension system and unilateral high-intensity magnetic field generation device |
| CN109532508A (en) * | 2018-11-21 | 2019-03-29 | 彭国洪 | A kind of U-shaped magnetic suspension mode of train |
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