CN1088246C - Variable profile superconducting magnetic coil - Google Patents
Variable profile superconducting magnetic coil Download PDFInfo
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- CN1088246C CN1088246C CN95195573A CN95195573A CN1088246C CN 1088246 C CN1088246 C CN 1088246C CN 95195573 A CN95195573 A CN 95195573A CN 95195573 A CN95195573 A CN 95195573A CN 1088246 C CN1088246 C CN 1088246C
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- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F6/00—Superconducting magnets; Superconducting coils
- H01F6/06—Coils, e.g. winding, insulating, terminating or casing arrangements therefor
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Abstract
Double pancake coils include a pair of pancake coils of different dimensions, and are wound from the same continuous length of superconducting wire. The double pancake coils are coaxially positioned and electrically interconnected along a longitudinal axis to provide a multi-coil superconducting magnetic coil assembly. Each of the double pancakes has at least one of its pancake coils electrically connected to at least another pancake coil of an adjacent double pancake coil having substantially the same outer dimension. The electrical connections between adjacent pancake coils are provided with relatively straight or 'unbent' segments (81) of superconducting wire even through the inner and/or outer dimension profile of the superconducting magnetic coil assembly along its longitudinal axis varies.
Description
The present invention relates to superconducting magnet coil.
As known in the prior art, the most surprising performance of superconductor exactly when its be cooled to critical temperature Tc when following its resistance disappear.
Under Tc and critical magnetic field, the transmission of superconduction physical efficiency is up to a current density of the critical current density (Jc) of superconductor.Critical current density is that material is lost its superconducting characteristic, returned to the current density of its common conduction state.
Superconductor can be used for making superconducting magnet coil such as solenoid, runway shape magnet, multi-pole magnet etc., wherein superconductor coiled coil shape.When coil temperature was enough low, the HTS conductor may reside in superconducting state, and current delivery ability and the magnetic field amplitude that is produced by coil obviously improve.
Typical superconductor comprises niobium-titanium, niobium-Xi, also has the cupric oxide pottery, for example various in rare earth-copper-oxide series (being YBCO), thallium-barium-calcium-copper-oxide series (being TBCCO), mercury-barium-calcium-copper-oxide series (HgBCCO) and the bismuth-strontium-calcium-copper-oxide series (being BSCCO).Certain BSCCO compound, also can be leaded (promptly (Bi, Pb)
2Sr
2Ca
2Cu
3Ox or Bi
2Sr
2Ca
2Cu
3Ox (BSCCO2223), and Y
1Ba
2Cu
3O
4(YBCO123), performance is good especially, because can reach superconductivity and corresponding high current density characteristic at high relatively temperature (Tc=115K and 95K).
Referring to Fig. 1, when making this superconducting magnet coil, superconductor can form the shape of the strip 5 that can make conductor center on the core-diameter bending.Among some embodiment, strip is made multi-thread combination superconductor, and it comprises each the discrete superconduction filament 7 that in fact extends on the whole length of multi-thread combined conductor, and is formed material 8 (generally being silver or other noble metal) by parent and center on or support.Although parent forms the material conduction, is not superconduction.Superconduction filament and parent form material and form multi-thread combined conductor together.In some applications, superconducting core silk and parent form material and are included in (not shown) in the insulating barrier.The ratio that superconductor and parent form material also is called " activity coefficient ", is generally less than 50%.This band also can be other known form, and (PIT) form or superconductor are deposited on coating band on the banded substrate surface to comprise " powder in the pipe ".
Can adopt one of two kinds of common methods by superconduction roll coil of strip coiled magnet coil.First method also is called a layer winding, connects another multiturn superconductor of reeling all over the ground until forming ground floor around a circle unshakable in one's determination.Each the follow-up layer of reeling on preceding one deck top then is until the desired number of plies of coiling on iron core.
Another kind method also is called flat winding, the circle superconductor band of on preceding circle top, reeling, thus formation is perpendicular to the circle plane of coil axes.Adopting a series of flatwise coils to form in the application of coil, flatwise coil can be wound into two flatwise coils.
In some applications, adopt the superconducting magnet coil assembly of flatwise coil (no matter being single or two) can comprise several coils, and the coaxial setting of length of coil assembly along the line.Superconducting line or band that each coil is made with length short superconductor such as Cu oxide pottery by the above-mentioned type interconnect.
By a kind of scheme of the present invention, the superconducting magnet coil assembly comprises around the two flatwise coils coaxial setting of the longitudinal axis, that be electrically connected, respectively comprise a pair of discrete flatwise coil, each discrete flatwise coil comprises the superconductor of reeling around the longitudinal axis of coil block with the coil block of the flatwise coil that is electrically connected, and each flatwise coil has different radial sections with respect to the longitudinal axis.
Interface in two flatwise coils between each discrete flatwise coil is usually located at the internal diameter of coil assembly along the line, and utilizes special coiling to form with the superconducting line of constructing technology by identical continuous length.Mutual electrical connection between each pair flatwise coil is called " bridge ", and this can adopt the straight relatively of conductor strip material or " not having crooked " section, realize between each right discrete flatwise coil of the adjacent pair of flatwise coil that has identical overall dimensions basically.The conductor material of cross-over connection flatwise coil can be whole for the solid piece of superconductor or be one section better and make up superconducting line, this line contacts with flatwise coil by its metal sheath, or the superconducting line of one section corrosion, skin after the corrosion of this line and flatwise coil contacts, and engages to form complete superconduction.Also can adopt other method to realize comprising contact between each flatwise coil welding, add press contacts and pyroreaction, but be not limited to these methods.Though in order on perpendicular to the direction of the longitudinal axis, to coincide with the flatwise coil profile, the section of superconducting line can have bending slightly, but when these sections are crossed over each discrete coil of adjacent two flatwise coils, be unbending (as the thickness of bending) basically less than an assemble line along the coil longitudinal axis.So the superconducting magnet coil assembly can have non-homogeneous interior and/or outside dimension along its length, is used to provide a shape and a gathering, can use the combination superconducting line that does not have bending substantially that multistage low-loss electrical connection can be provided between two flatwise coils of assembly simultaneously.
Provide electric interconnection to improve the electric and Mechanical Reliability of interconnection with non-relatively crooked superconducting line.For most of, this is because selected mechanical performance in order to the material of superconductivity that expectation is provided.Be similar to this material of Cu oxide Types of Pottery, normally can not stand to use (for example when bending process, the producing) of big stress, be easy to be full of cracks or fracture when too crooked.This material is a feature with its bending stress and critical stress value usually.Bending stress equals conductor thickness half after divided by bending radius, and the limit stress of conductor be defined as electrical property significantly reduce before the amount of the stress that can bear of material.The critical stress value height depends on makes the used formation technology of conductor, and between 0.05%～1.0%, this depends on used technology usually.Along with the change of bending stress is big, what be accompanied by is the resistance and the voltage increase at joint two ends.If the bending stress of conductor surpasses the limit stress of conductor, then the degree of resistance increase obviously reduces the current delivery ability of conductor, thereby the maximum field that coil is produced obviously reduces.
Specific embodiment of the present invention can comprise one or more following features.
In some applications, the side dimension of coil block is along the longitudinal axis of superconducting magnet coil, changes to petiolarea from the center of superconducting magnet coil.For example, the side dimension of adjacent pair of flatwise coil is along the longitudinal axis of superconducting magnet coil, can be (be constant or reduce) of dull non-increase from the center of superconducting magnet coil to petiolarea.By identical mode, the side dimension of adjacent pair of flatwise coil is along the longitudinal axis of superconducting magnet coil, can be monotone nondecreasing little (be constant or increase) from the center of superconducting magnet coil to petiolarea.First of at least one pair of discrete flatwise coil can have the side dimension that is different from this another right discrete flatwise coil in two flatwise coils.In certain embodiments, one or more pairs of flatwise coils can have the essentially identical a pair of discrete flatwise coil of its side dimension, but are different from the side dimension of another pair flatwise coil of coil block.
By identical mode, the inside dimensions of coil block is along the longitudinal axis of superconducting magnet coil, can change to petiolarea from the center of superconducting magnet coil.For example, the inside dimensions of adjacent pair of flatwise coil along the longitudinal axis of superconducting magnet coil, can be dull non-increase (be constant or reduce) from the center of superconducting magnet coil to petiolarea.Similarly, the inside dimensions of adjacent pair of flatwise coil along the longitudinal axis of superconducting magnet coil, can be monotone nondecreasing little (be constant or increase) from the center of superconducting magnet coil to petiolarea.First of a pair of discrete flatwise coil of at least one two flatwise coil can have and be different from this inside dimensions to another discrete flatwise coil.Connect this to the superconducting line of discrete flatwise coil part can with this another adjacent side surface to discrete flatwise coil on, be fixed in rigidly on the flatwise coil of less inside dimensions, provide mechanical support with position to the discrete flatwise coil of cross-over connection.
In other embodiments, one or more pairs of flatwise coils can have the essentially identical a pair of discrete flatwise coil of its inside dimensions, but are different from the inside dimensions of another pair flatwise coil of coil block.In an example, coil block can comprise the two flatwise coils that are made of discrete flatwise coil, and each two flatwise coil is wound into has identical inside diameter.Yet each pair flatwise coil all has different inside diameter, and along longitudinal axis coaxial positioning, provides the coil block with variable inside diameter with this.
Superconducting magnet coil with variable inside dimensions also can have along the superconducting magnet coil longitudinal axis, the side dimension that changes to petiolarea from the center of superconducting magnet coil.For example, among this embodiment, the side dimension of adjacent pair of flatwise coil along the superconducting magnet coil longitudinal axis, can dullness reduces or increases from the center of superconducting magnet coil to petiolarea.One of a pair of discrete flatwise coil of at least one two flatwise coil can have the side dimension that is different from this another discrete flatwise coil of centering.
Two flatwise coils can be circular, and have electrical connection between each discrete flatwise coil of the adjacent pair of flatwise coil that outside diameter is equal to substantially.In addition, two flatwise coils can be runway shape or saddle type (that is the outermost radial portion is sagging).Superconductor can be anisotropic, anisotropic superconductor body for example, and for example bismuth is (as Bi
2Sr
2Ca
2Cu
3Ox or Bi
2Sr
2Ca
1Cu
2Ox (BSCCO2223 or BSCCO2212)) or the member in the yttrium series oxide superconductor.Superconductor can form the superconductor band by single line or multi-thread combination superconductor.Multi-thread combination superconductor is usually included in the discrete superconduction filament that extends on the multi-thread combined conductor length, and forms material by parent and centered on.In concrete application, multi-thread combination superconductor can be stranded.Can adopt for example to form the conduction cross-over connection section that comprises the superconductor band that makes up superconductor material, in order to the electrical connection between the discrete flatwise coil that adjacent pair of flatwise coil is provided.
By another program of the present invention, a kind of method of superconducting magnet coil assembly is provided, the section that the longitudinal axis of coil assembly along the line has radial variations, comprising following steps:
A) provide two flatwise coils, each comprises a pair of flatwise coil of being reeled by the superconductor of continuous length around the coil block longitudinal axis, and at least one comprises the flatwise coil that the pair of inside size is different in the described pair of flatwise coil;
B) along the two flatwise coils of longitudinal axis coaxial positioning so that in each two flatwise coil at least one flatwise coil have with adjacent pair of flatwise coil in the essentially identical side dimension of side dimension of adjacent flat coil;
C) at least one flatwise coil in each two flatwise coil is electrically connected with flatwise coil in the essentially identical adjacent pair of flatwise coil of side dimension.
In a preferred embodiment, connect the part of the superconducting line of a pair of flatwise coil, with this to discrete flatwise coil on another adjacent side surface, be fixed in the less flatwise coil of inside dimensions rigidly.Two flatwise coils can also be connected with the cross-over connection of the superconductor of a segment length.
By another scheme of the present invention, the two flatwise coils of a kind of superconduction comprise: first flatwise coil has first inside dimensions, and is reeled around the coil longitudinal axis by superconductor; Second flatwise coil has second inside dimensions that is different from described first size, and is reeled around the coil longitudinal axis by superconductor, and wherein first and second flatwise coils are reeled by the superconductor material of continuous length.
Can make up two flatwise coils inboard and that outside diameter changes,, for example adapt to the demand that limits shape or specific superconduction capacity in order to the desired Distribution of Magnetic Field within the fixed capacity to be provided.Method in the superconductor quantity that reduces its petiolarea, can make the magnetic field maximization thus.Therefore, provide the total amount of the usually required superconductor of the magnetic field levels of center to reduce.On the other hand, can select inboard and/or side dimension, in order to the magnetic field of or special shape evenly basic along its axial length to be provided.
Can understand other advantage and feature from the following description and claim.
Fig. 1 is the profile of multi-thread combined conductor.
Fig. 2 is the perspective view with multiple layer uplap loop of two flatwise coils.
Fig. 3 is the profile that 3-3 along the line did along Fig. 2.
Fig. 4 has showed the coil winding apparatus.
Fig. 5 is the profile of another embodiment of the present invention.
Fig. 6 is the profile of another embodiment of the present invention, and wherein the inside diameter of coil block changes.
Fig. 7 is the profile of an embodiment more of the present invention, and wherein the inside diameter of coil block changes.
Fig. 8 is the end view along two flatwise coils that 8-8 along the line did of Fig. 7.
Fig. 9 is the profile of another embodiment of the present invention, and wherein the inside diameter of coil block changes.
Referring to Fig. 2-3, mechanically robust, high performance superconducting coil assembly 10 combine a plurality of two " flat " coil 12-17, and six discrete two flat parts are arranged here, and each all has the combined conductor of common coiling.Each two " flat " coil have close wind altogether around conductor, and coaxial stacked on end face mutually.Shown in conductor be high temperature Cu oxide ceramic superconductor material, for example Bi
2Sr
2Ca
2Cu
3Ox is typically expressed as BSCCO 2223.Each two flatwise coil 12-17 comprises flatwise coil 12a-17a, its diameter is less than the diameter of the flatwise coil 12b-17b that adjoins with it in two flatwise coils, two a pair of coils are to adopt below in conjunction with the illustrated method of Fig. 4, by the superconduction tape wrapping of identical continuous length.Two flatwise coil 12-17 are circular shown in Fig. 2 and 3.But in other was used, each two flatwise coil can have other shape that is generally used for preparing magnet coil, comprises racetrack and saddle molded lines circle.
Adopt the short cross-over connection section 22 of superconductor, discrete two flatwise coil 12-17 are electrically connected with the series connection form, the short section of this cross-over connection is used and the identical Bi of coil itself that reels
2Sr
2Ca
2Cu
3The Ox material forms.In addition, also can adopt heavier cross-over connection material.And, along the essentially identical interface of the outside diameter of each discrete flatwise coil, each section 22 each adjacent two flatwise coil of interconnection.For example, the flatwise coil 12b and the 13a that have showed the section two flatwise coils 12 of 22 difference cross-over connections and 13.The outside diameter that only needs the short section of cross-over connection 22 coil assemblies along the line, this is that the interface between the flatwise coil of different-diameter is positioned at the inside diameter place of the coil block 10 that does not have " joint " because adopt the two flatwise coil coiling technology that are about to explanation below in conjunction with Fig. 4.By making adjacent flatwise coil have essentially identical outside diameter, thereby superconduction cross-over connection section need not bending or meets with stresses, thereby avoids the above-mentioned consequence of not expecting.Also available one section superconductor (not shown) is connected to one of binding post 24 that is positioned on the end pieces 18 to an end of coil block 10, so that provide electric current to coil block 10.The cross-over connection section can be manufactured with metal, combination superconductor or pure superconductor.
The distribution of the axial length of superconductor coil assembly 10 along the line is not uniformly, but has the superconductor quantity more than petiolarea in the center of combination.The configuration of this couple of flatwise coil 12-17 is fit to following application very much, expect that promptly the magnetic field of the center 23 of coil block 10 increases, and the magnetic field size of the outer end region 25 of coil is inessential.Can realize this magnetic field levels though adopt the superconducting magnet coil of uniform outer diameter (for example flatwise coil 14b and 15a) with the maximum gauge flatwise coil that equals coil block 10, but reach the superconductor that larger amt will be used in this magnetic field, so need cooling, thereby the energy service efficiency is lower.
In one embodiment of the invention, seven two flatwise coils are along longitudinal axis arranged in co-axial alignment, highly are 2.75 inches superconducting magnet coil assembly thereby provide.Seven two flatwise coils with BSCCO2223/ silver superconduction built-up coils around, and all have 1.125 inches internal diameter of definite coil block inner chamber.Three in seven two flatwise coils is traditional band (being the discrete flatwise coil of same outer diameter as), and has about 6.0 inches external diameter.In other seven two flatwise coils two also are the tradition bands and have about 5.0 inches external diameter (O.D.).These two two flatwise coils are positioned every end of coil block.Between two flatwise coils of 6.0 inches external diameters of two flatwise coils and bosom of 5.0 inches less external diameters of outermost end two two flatwise coils manufacturing according to the present invention.Each of these two two flatwise coils is used as transition coil, and comprises that external diameter is the discrete flatwise coil that 5.0 inches discrete flatwise coil and external diameter are 6.0 inches.Electric interconnection between each pair flatwise coil is provided by the short section of the identical combination superconduction band of two flatwise coils that are used to reel.This superconducting magnet coil assembly provides the center axial magnetic field of 2.1 teslas when being cooled to 27 ° of K by mechanical subcolling condenser.
Referring to Fig. 4, each the method that forms among two " flat " coil 12-17 is described.The method has more fully explanation in following common pending application, promptly by M.D.Manlief, G.N.Rileg, Jr., J.Voccio and A.J.Rodenbush are 08/188 of submission on January 28th, 1994, No. 220 applications, exercise question is " a superconduction combine volume around-induction coil and manufacture method thereof ", and transfer assignee of the present invention, draw the do reference at this.In the equipment shown in Figure 4, mandrel 30 is installed on the wireline reel 32 that is installed on lathe chuck 31 at first.Storage spools 36 is installed on wireline reel 32, originally be wound onto storage spools 36 around the first with 33 length overall that is used for one of winding flat line coil (normally major diameter flatwise coil) that bobbin 34 twines, the length allocation of band 33 is between two bobbins as a result.The bobbin 34 that is installed on pole 35 has comprised the first with 33 length, and the storage coil 36 that comprises with 33 second portion is fixed, so that it is with respect to mandrel 30 rotations.Being wound on insulation weaving cotton cloth on the bobbin 38 then 37 is installed on the pole 35.The rotation mandrel, weave cotton cloth 37 be wound on jointly on the mandrel 30 with 33 first, form single " flat " coil.Twine thermocouple wire around first " flat " coil, so that be fixed in mandrel.Take off wireline reel 32 from lathe chuck 31 then, the storage spools 36 that comprises with 33 length second portions is installed on the pole 35.One deck insulating material and first " flat " coil is relative and put, and adopts above-mentioned technology 37 to be wound on jointly on the mandrel 30 weaving cotton cloth with 33 second one half-sum.This " flat " coil that causes nestling up initial formation forms second " flat " coil, separates two coils by one deck insulating material.Twine thermocouple wire around second " flat " coil then, in order to supporting-line coil structures during final heat treatment.Can two " flat " coil with 33 on each point add voltage tap and thermocouple wire so that monitor the temperature and the electric state of coil.In addition, in order to improve insulation property and to keep each layer firmly in place, can after heat treatment, use epoxy resin impregnated all coils.Two " flat " coil can make one side of the whole length of band directly be exposed to oxidation environment in final heat treatment step.The multilayer superconductor can alternately be reeled with multi-layer insulation, forms coil.Also can be between each layer superconductor the multilayer-wound reinforcing material.Also can adopt other to form method, for example known reaction and coiling (react-and-wind) method of two flatwise coils.
The design that reaches the two flatwise coils shown in Fig. 2 and 3 as mentioned above provides energy efficiency quite high superconducting coil assembly, and wherein hub of a spool magnetic field is stronger.The solution of the present invention also can be used to provide with the anisotropic superconductor material webs around superconducting magnet coil, its purpose is to realize uniform coil current transmittability on its axial length.
For example, referring to Fig. 5,, the external diameter of two flatwise coil 60-65 is increased from hub of a spool district 67 to petiolarea 69 in order to compensate the decline of the current delivery ability relevant with magnetic field vertical component amplitude.As known in the prior art (when adopting above-mentioned anisotropic superconductor material, Cu-O base ceramic superconductor for example), the magnetic field vertical component is in coil center minimum, this place's magnetic line of force is parallel with the coil longitudinal axis usually, and in petiolarea increase vertical component, and this place's magnetic line of force is bent to form closed loop.
Also can adopt the essentially identical many any designs of external diameter of adjacent flat coil, in order to provide coil block desired magnetic signature to flatwise coil.For example, can adopt to have the coil block that is wound into the different two flatwise coils of flatwise coil diameter, this is equal to discrete flatwise coil or the uniformly two flatwise coils of external diameter.Vertical external diameter profile of these coil blocks can be to increase or reduce from the hub of a spool district along Y coil petiolarea.In addition, can be ladder and stepped downwards upwards along the external diameter profile of coil axes, with magnetic field shape profile that is used to provide any desired or the geometry that adaptation was limited, for example rotor coil of motor.The solution of the present invention also can be used for the superconducting magnet coil of different shape, comprises runway shape magnet, solenoid and multi-pole magnet.
In addition, this programme can be used for the design that the internal diameter profile of superconductor coil assembly changes, simultaneously its external diameter profile both can be basic identical also can be by above-mentioned variation.Coil block with this design for example can adopt the two flatwise coils with same outer diameter as, but its each have a different inner diameters (discrete flatwise coil) with each two flatwise coil of same inner diameter.The longitudinal axis of coil assembly along the line makes two flatwise coils location then, so that the internal diameter of coil block reduces along for example dull increase of axle or dullness.
Referring to Fig. 6 and 7, in other embodiments, has the discrete flatwise coil of different inner diameters along two flatwise coils of the longitudinal axis 100 location of each coil block 80,90.Adopt the short cross-over connection section 81 of length to make adjacent pair of different flatwise coil of internal diameter carry out electric interconnection at the interface along the coil external diameter.Become those embodiment of ladder the same with outline, can use different shape coil and various stair-stepping interior profile, this depends on concrete application.Can adopt interior stay pipe for supporting each discrete two flatwise coil, also can not adopt.
Referring to Fig. 6, superconducting magnet coil assembly 80 comprises and is arranged to the flatwise coil 82-87 that its internal diameter reduces to petiolarea 89 from hub of a spool district 88.This design can be that superconducting motor or superconducting accelerator are used required.For example, in superconducting motor is used, can adopt the two flatwise coils of the superconduction with variation internal diameter same as shown in Figure 6 to make one or more stators.In this way, stator can with the rotor profile tight connecting that is positioned in the inner chamber.
Referring to Fig. 7, superconducting magnet coil assembly 90 comprise its internal diameter from the center the 98 flatwise coil 92-97 that increase to petiolarea 99.Coil with this design is attractive in magnetic resonance imaging and chemical spectrum application.Should notice that in this specific embodiments the discrete flatwise coil 92a-92b, the 97a-97b that constitute outside flatwise coil 92 and 97 have above in conjunction with Fig. 2 and 3 described configurations respectively.That is the internal diameter of these pairs flatwise coil is constant substantially, but has different external diameters.
Fig. 6 and 7 flatwise coil 82-87 and 93-96 are respectively by reeling in conjunction with the described identical common mode of Fig. 4.But mandrel is made has the different position of external diameter, and each is used to adapt to the coiling of the discrete flatwise coil of two flatwise coils.For example, the first of coiling superconduction band on the first external diameter position of mandrel, first of formation " single " flatwise coil.Then all the other bands on the storage spools are moved on the pole in two discrete flatwise coils are reeled at the second various outer diameter position of mandrel second.According to the intensity of variation at the different-diameter position of mandrel, guiding or track segment can be set, provide supporting with transition to the band between each discrete flatwise coil.For the current delivery ability that reduces band may rupturing or bending stress of adverse effect arranged, this track segment is necessary.
Referring to Fig. 8, the end view of a typical example of two flatwise coils of coil block 90 has been showed the discrete flatwise coil 94a of two flatwise coils 94 and the interface between the 94b.As shown in the figure, the spiral part 102 of superconduction band is not reeled to the internal diameter of 94b from the internal diameter of flatwise coil 94a.When two flatwise coil epoxy resin-impregnated, the spiral part 102 of band is fixed in the inner surface 104 of flatwise coil 94b rigidly, in order to the mechanical support to spiral part to be provided.In some applications, it may be suitable making the different-diameter zone thorough impregnation epoxy resin between flatwise coil 94a, the 94b.
Referring to Fig. 9, in the another embodiment of the present invention, superconducting coil assembly 110 comprises two flatwise coil 114-119 of the longitudinal axis 112 location of coil assembly along the line.With above in conjunction with Fig. 2,3 different with the described embodiment of 5-7, each two flatwise coil comprise a pair of have identical in and the discrete flatwise coil of external diameter.But as shown in Figure 9, adjacent pair of flatwise coil of coil block 110 has different internal diameters, thereby the coil block of internal diameter varies is provided.The internal diameter of coil block can change to adapt to any shape that is retrained or superconductor capacity requirement, shown in comprising here, the petiolarea to coil block increases internal diameter from the center.In this embodiment, can adopt and abovely form among two flatwise coil 114-119 each in conjunction with the described method of Fig. 4.
Therefore should be understood that two flatwise coils of assembly have the interior and external diameter of variation, this can have the degree of freedom greatly aspect the desired Distribution of Magnetic Field providing for coil design person.This coil can be designed to provides magnetic field with high evenness or the magnetic field that has the high-amplitude value in the specific region.
Other embodiment is included in claims.
Claims (32)
1. superconducting magnet coil assembly comprises:
A plurality of pairs of flatwise coils, the longitudinal axis of its coil assembly along the line is provided with coaxially, each two flatwise coil has a pair of discrete flatwise coil, each discrete flatwise coil comprises the anisotropy high-temperature superconductor of reeling around the longitudinal axis of coil block, each two flatwise coil is electrically connected with adjacent flatwise coil, and the coil block of the flatwise coil of electrical connection has the radial section with respect to longitudinal axis variation.
2. superconducting magnet coil assembly according to claim 1, wherein the discrete flatwise coil of each two flatwise coil is electrically connected with the discrete flatwise coil of adjacent pair of flatwise coil along the side dimension of adjacent pair of flatwise coil.
3. superconducting magnet coil assembly according to claim 1, wherein two flatwise coils are circular.
4. superconducting magnet coil assembly according to claim 1, wherein two flatwise coils are runway shapes.
5. superconducting magnet coil assembly according to claim 1, wherein the center of the inside dimensions of coil block along the longitudinal axis of superconducting magnet coil from superconducting magnet coil changes to petiolarea.
6. superconducting magnet coil assembly according to claim 1, wherein the anisotropy high-temperature superconductor is a kind of of bismuth series oxide superconductor.
7. superconducting magnet coil assembly according to claim 1, wherein the anisotropy high-temperature superconductor is a kind of of yttrium series oxide superconductor.
8. superconducting magnet coil assembly according to claim 1, wherein superconductor forms the superconductor band that comprises multi-thread silk combination superconductor, and it comprises along multi-thread silk combined conductor length and extends and form the discrete superconductor filament that material centers on or supports by parent.
9. superconducting magnet coil assembly according to claim 1, wherein conducting electricity provides electrical connection between the discrete flatwise coil of cross-over connection section for adjacent pair of flatwise coil.
10. superconducting magnet coil assembly according to claim 5, wherein first of a pair of discrete flatwise coil of at least one two flatwise coil has basically and this right identical inside dimensions of another discrete flatwise coil, and the inside dimensions of at least one two flatwise coil is different from the inside dimensions of the flatwise coil of another pair at least of coil block.
11. superconducting magnet coil assembly according to claim 5, wherein the center of the side dimension of coil block along the longitudinal axis of superconducting magnet coil from superconducting magnet coil changes to petiolarea.
12. superconducting magnet coil assembly according to claim 5, the center of the inside dimensions of wherein adjacent pair flatwise coil along the longitudinal axis of superconducting magnet coil from superconducting magnet coil is to the dull non-increase of petiolarea.
13. forming, superconducting magnet coil assembly according to claim 9, the cross-over connection section of wherein conducting electricity comprise the superconductor band that makes up superconductor.
14. superconducting magnet coil assembly according to claim 10, wherein each in a pair of discrete flatwise coil of each two flatwise coil has basically and this right identical inside dimensions of another discrete flatwise coil, and at least one two flatwise coil has the inside dimensions of another pair flatwise coil that is different from coil block.
15. superconducting magnet coil assembly according to claim 11, the center of the side dimension of wherein adjacent pair flatwise coil along the longitudinal axis of superconducting magnet coil from superconducting magnet coil reduces to petiolarea.
16. a superconducting magnet coil assembly comprises:
A plurality of pairs of flatwise coils, the longitudinal axis of its coil assembly along the line is provided with coaxially, each two flatwise coil has a pair of discrete flatwise coil, each discrete flatwise coil comprises the superconductor of reeling around the longitudinal axis of coil block, each two flatwise coil is electrically connected with adjacent flatwise coil, the coil block of the flatwise coil that is electrically connected has the radial section that changes with respect to the longitudinal axis, and the inside dimensions of wherein adjacent pair flatwise coil is little to the petiolarea monotone nondecreasing from the center of superconducting magnet coil along the longitudinal axis of superconducting magnet coil.
17. superconducting magnet coil assembly according to claim 16, wherein superconductor is the anisotropy high-temperature superconductor.
18. a superconducting magnet coil assembly comprises:
A plurality of pairs of flatwise coils, the longitudinal axis of its coil assembly along the line is provided with coaxially, each two flatwise coil has a pair of discrete flatwise coil, each discrete flatwise coil comprises the superconductor of reeling around the longitudinal axis of coil block, each two flatwise coil is electrically connected with adjacent flatwise coil, the coil block of the flatwise coil that is electrically connected has the radial section that changes with respect to the longitudinal axis, wherein the center of the inside dimensions of coil block along the longitudinal axis of superconductor coil from superconducting magnet changes to petiolarea, and first of a pair of discrete flatwise coil of at least one two flatwise coil has the inside dimensions that is different from this another right discrete flatwise coil.
19. superconducting magnet coil assembly according to claim 18, the superconductor part that wherein connects a pair of discrete flatwise coil is being fixed on the less flatwise coil of inside dimensions on to another the adjacent side surface in the discrete flatwise coil rigidly with this.
20. a superconducting magnet coil assembly comprises:
A plurality of pairs of flatwise coils, the longitudinal axis of its coil assembly along the line is provided with coaxially, each two flatwise coil has a pair of discrete flatwise coil, each discrete flatwise coil comprises the superconductor of reeling around the longitudinal axis of coil block, each two flatwise coil is electrically connected with adjacent flatwise coil, the coil block of the flatwise coil that is electrically connected has the radial section that changes with respect to the longitudinal axis, wherein the center of the inside dimensions of coil block along the longitudinal axis of superconducting magnet coil from superconducting magnet coil changes to petiolarea, and the center of the side dimension of adjacent pair of flatwise coil along the longitudinal axis of superconducting magnet coil from superconducting magnet coil increases to petiolarea.
21. a superconducting magnet coil assembly comprises:
A plurality of pairs of flatwise coils, the longitudinal axis of its coil assembly along the line is provided with coaxially, each two flatwise coil has a pair of discrete flatwise coil, each discrete flatwise coil comprises the superconductor of reeling around the longitudinal axis of coil block, each two flatwise coil is electrically connected with adjacent flatwise coil, the coil block of the flatwise coil that is electrically connected has the radial section that changes with respect to the longitudinal axis, the center of the inside dimensions of coil block along the longitudinal axis of superconducting magnet coil from superconducting magnet coil changes to petiolarea, wherein the center of the inside dimensions of coil block along the longitudinal axis of superconducting magnet coil from superconducting magnet coil changes to petiolarea, and first of a pair of discrete flatwise coil of at least one two flatwise coil has the side dimension that is different from this another right discrete flatwise coil.
22. a superconducting magnet coil assembly comprises:
A plurality of pairs of flatwise coils, the longitudinal axis of coil assembly along the line is provided with coaxially, each two flatwise coil has a pair of discrete flatwise coil, each discrete flatwise coil comprises the superconductor of reeling around the longitudinal axis of coil block, each two flatwise coil is electrically connected with adjacent flatwise coil, the coil block of the flatwise coil that is electrically connected has the radial section that changes with respect to the longitudinal axis, and wherein the discrete flatwise coil of each two flatwise coil is electrically connected with the discrete flatwise coil of adjacent pair of flatwise coil along the side dimension of adjacent pair of flatwise coil.
23. superconducting magnet coil assembly according to claim 22, the center of the side dimension of wherein adjacent pair flatwise coil along the longitudinal axis of superconducting magnet coil from superconducting magnet coil is to the dull non-increase of petiolarea.
24. superconducting magnet coil assembly according to claim 22, the side dimension of wherein adjacent pair flatwise coil is little to the petiolarea monotone nondecreasing from the center of superconducting magnet coil along the longitudinal axis of superconducting magnet coil.
25. superconducting magnet coil assembly according to claim 22, wherein first of a pair of discrete flatwise coil of at least one two flatwise coil has and is different from this side dimension to another discrete flatwise coil.
26. superconducting magnet coil assembly according to claim 22, wherein first of a pair of discrete flatwise coil of at least one two flatwise coil has basically and this right identical side dimension of another discrete flatwise coil, and the side dimension of at least one two flatwise coil is different from the side dimension of the flatwise coil of another pair at least of coil block.
27. superconducting magnet coil assembly according to claim 26, wherein each in a pair of discrete flatwise coil of each two flatwise coil has identical to another discrete flatwise coil with this basically side dimension, and at least one two flatwise coil has the side dimension that is different from another pair of coil block flatwise coil.
28. a superconducting magnet coil assembly comprises:
A plurality of pairs of flatwise coils, the longitudinal axis of its coil assembly along the line is provided with coaxially, each two flatwise coil has a pair of discrete flatwise coil, each discrete flatwise coil comprises the superconductor of reeling around the longitudinal axis of coil block, each two flatwise coil is electrically connected with adjacent flatwise coil, the coil block of the flatwise coil that is electrically connected has the radial section that changes with respect to the longitudinal axis, and wherein two flatwise coils are saddle types.
29. the method for superconducting magnet coil assembly is provided, and this coil block has the radial section that the coil assembly longitudinal axis along the line changes, and may further comprise the steps:
A) provide two flatwise coils, each comprises a pair of flatwise coil of being reeled and being formed by the superconductor of continuous length around the coil block longitudinal axis, and at least one comprises the flatwise coil that the pair of inside size is different in the described pair of flatwise coil;
B) along the two flatwise coils of longitudinal axis coaxial positioning so that in each two flatwise coil at least one flatwise coil have with adjacent pair of flatwise coil in the essentially identical side dimension of side dimension of adjacent flat coil;
C) at least one flatwise coil in each two flatwise coil is electrically connected with flatwise coil in the essentially identical adjacent pair of flatwise coil of side dimension.
30. method according to claim 29 wherein also comprises step: with this to flatwise coil with this to discrete flatwise coil in the superconductor partially rigid that links to each other of the flatwise coil of less inside dimension on another adjacent side surface fix.
31. method according to claim 29 is wherein further comprising the steps of: connect described pair of flatwise coil with unbending substantially superconductor section.
32. the two flatwise coils of superconducting magnet comprise:
First flatwise coil has first inside dimensions, and is reeled around the coil longitudinal axis by superconductor;
Second flatwise coil has second inside dimensions that is different from described first size, and is reeled around the coil longitudinal axis by superconductor,
Wherein said first and second flatwise coils are reeled by the superconductor material of continuous length.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US32282594A | 1994-10-13 | 1994-10-13 | |
| US08/323,494 US5604473A (en) | 1994-10-13 | 1994-10-13 | Shaped superconducting magnetic coil |
| US08/541,639 | 1995-10-10 | ||
| US08/541,639 US5581220A (en) | 1994-10-13 | 1995-10-10 | Variable profile superconducting magnetic coil |
| US08/323,494 | 1995-10-10 | ||
| US08/322,825 | 1995-10-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1160454A CN1160454A (en) | 1997-09-24 |
| CN1088246C true CN1088246C (en) | 2002-07-24 |
Family
ID=27406232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95195573A Expired - Fee Related CN1088246C (en) | 1994-10-13 | 1995-10-13 | Variable profile superconducting magnetic coil |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP0786141B2 (en) |
| JP (1) | JPH10507589A (en) |
| CN (1) | CN1088246C (en) |
| AU (1) | AU694296B2 (en) |
| CA (1) | CA2201715A1 (en) |
| DE (1) | DE69531693T3 (en) |
| NZ (1) | NZ296653A (en) |
| WO (1) | WO1996012288A1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005008687A1 (en) * | 2003-07-17 | 2005-01-27 | Fuji Electric Systems Co., Ltd. | Superconducting wire and superconducting coil employing it |
| JP2007073623A (en) * | 2005-09-05 | 2007-03-22 | Kobe Steel Ltd | Bobbin for manufacturing superconducting coil and superconducting coil of solenoid winding |
| JP5201551B2 (en) | 2008-08-06 | 2013-06-05 | 株式会社Ｉｈｉ | Superconducting coil and magnetic field generator |
| JP5198193B2 (en) * | 2008-09-12 | 2013-05-15 | 株式会社神戸製鋼所 | Superconducting magnet and manufacturing method thereof |
| JP6199628B2 (en) * | 2013-06-28 | 2017-09-20 | 株式会社東芝 | Superconducting coil device |
| JP5826442B1 (en) * | 2014-11-26 | 2015-12-02 | 三菱電機株式会社 | Superconducting magnet and superconducting magnet manufacturing method |
| GB201515978D0 (en) * | 2015-09-09 | 2015-10-21 | Tokamak Energy Ltd | HTS magnet sections |
| CN105554650A (en) * | 2016-01-01 | 2016-05-04 | 苏州井利电子股份有限公司 | Fatigue resistant voice coil wire for non-circular loudspeaker |
| DE102017122229A1 (en) * | 2017-09-26 | 2019-03-28 | Pstproducts Gmbh | EMPT coil with exchangeable conductor |
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- 1995-10-13 CN CN95195573A patent/CN1088246C/en not_active Expired - Fee Related
- 1995-10-13 EP EP95939529.4A patent/EP0786141B2/en not_active Expired - Lifetime
- 1995-10-13 CA CA 2201715 patent/CA2201715A1/en not_active Abandoned
- 1995-10-13 JP JP8513436A patent/JPH10507589A/en active Pending
- 1995-10-13 DE DE69531693.1T patent/DE69531693T3/en not_active Expired - Lifetime
- 1995-10-13 WO PCT/US1995/013359 patent/WO1996012288A1/en active IP Right Grant
- 1995-10-13 NZ NZ296653A patent/NZ296653A/en unknown
- 1995-10-13 AU AU41314/96A patent/AU694296B2/en not_active Expired
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| US4499443A (en) * | 1984-01-31 | 1985-02-12 | The United States Of America As Represented By The United States Department Of Energy | High-field double-pancake superconducting coils and a method of winding |
| US4623864A (en) * | 1984-04-26 | 1986-11-18 | Yokogawa Hokushin Electric Corporation | Magnetic field production coil for nuclear magnetic resonance imaging apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0786141B2 (en) | 2013-10-23 |
| CA2201715A1 (en) | 1996-04-25 |
| WO1996012288A1 (en) | 1996-04-25 |
| AU694296B2 (en) | 1998-07-16 |
| CN1160454A (en) | 1997-09-24 |
| DE69531693T2 (en) | 2004-07-15 |
| DE69531693D1 (en) | 2003-10-09 |
| DE69531693T3 (en) | 2014-04-10 |
| EP0786141B1 (en) | 2003-09-03 |
| EP0786141A4 (en) | 1997-12-17 |
| AU4131496A (en) | 1996-05-06 |
| NZ296653A (en) | 1999-01-28 |
| EP0786141A1 (en) | 1997-07-30 |
| JPH10507589A (en) | 1998-07-21 |
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