CN106298150A - A kind of superconducting magnet based on ReBCO spiral coating conductor sheet and preparation method - Google Patents
A kind of superconducting magnet based on ReBCO spiral coating conductor sheet and preparation method Download PDFInfo
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- CN106298150A CN106298150A CN201610821930.2A CN201610821930A CN106298150A CN 106298150 A CN106298150 A CN 106298150A CN 201610821930 A CN201610821930 A CN 201610821930A CN 106298150 A CN106298150 A CN 106298150A
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- superconductive pellet
- superconducting magnet
- rebco
- outer end
- insulating trip
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- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- 239000011248 coating agent Substances 0.000 title claims abstract description 21
- 238000000576 coating method Methods 0.000 title claims abstract description 21
- 239000004020 conductor Substances 0.000 title claims abstract description 17
- 239000008188 pellet Substances 0.000 claims abstract description 103
- 238000003466 welding Methods 0.000 claims abstract description 35
- 239000002887 superconductor Substances 0.000 claims abstract description 13
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 4
- 239000000758 substrate Substances 0.000 claims description 58
- 238000005520 cutting process Methods 0.000 claims description 56
- 239000010409 thin film Substances 0.000 claims description 22
- 239000011241 protective layer Substances 0.000 claims description 14
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 12
- 239000010410 layer Substances 0.000 claims description 12
- 238000002372 labelling Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 239000003822 epoxy resin Substances 0.000 claims description 6
- 238000011049 filling Methods 0.000 claims description 6
- 229920000647 polyepoxide Polymers 0.000 claims description 6
- 230000011218 segmentation Effects 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 230000004907 flux Effects 0.000 abstract description 3
- 230000009191 jumping Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 12
- 239000000463 material Substances 0.000 description 12
- 229910052802 copper Inorganic materials 0.000 description 10
- 239000010949 copper Substances 0.000 description 10
- 238000000151 deposition Methods 0.000 description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 8
- 238000000224 chemical solution deposition Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 8
- 238000007735 ion beam assisted deposition Methods 0.000 description 8
- 238000004549 pulsed laser deposition Methods 0.000 description 8
- 238000004544 sputter deposition Methods 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 238000003980 solgel method Methods 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 230000008021 deposition Effects 0.000 description 6
- 229910002370 SrTiO3 Inorganic materials 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 description 4
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 description 4
- 238000000354 decomposition reaction Methods 0.000 description 4
- RSEIMSPAXMNYFJ-UHFFFAOYSA-N europium(III) oxide Inorganic materials O=[Eu]O[Eu]=O RSEIMSPAXMNYFJ-UHFFFAOYSA-N 0.000 description 4
- CMIHHWBVHJVIGI-UHFFFAOYSA-N gadolinium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Gd+3].[Gd+3] CMIHHWBVHJVIGI-UHFFFAOYSA-N 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 4
- 229910052763 palladium Inorganic materials 0.000 description 4
- KDLHZDBZIXYQEI-UHFFFAOYSA-N palladium Substances [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 4
- 229910052697 platinum Inorganic materials 0.000 description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Substances [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- 229910052709 silver Inorganic materials 0.000 description 4
- 239000010944 silver (metal) Substances 0.000 description 4
- 238000005118 spray pyrolysis Methods 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 3
- 238000005229 chemical vapour deposition Methods 0.000 description 3
- 238000000407 epitaxy Methods 0.000 description 3
- 239000007792 gaseous phase Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000010301 surface-oxidation reaction Methods 0.000 description 3
- BGOFCVIGEYGEOF-UJPOAAIJSA-N helicin Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1OC1=CC=CC=C1C=O BGOFCVIGEYGEOF-UJPOAAIJSA-N 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- 229910052772 Samarium Inorganic materials 0.000 description 1
- FFWQPZCNBYQCBT-UHFFFAOYSA-N barium;oxocopper Chemical compound [Ba].[Cu]=O FFWQPZCNBYQCBT-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 125000002524 organometallic group Chemical group 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F6/00—Superconducting magnets; Superconducting coils
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F10/00—Thin magnetic films, e.g. of one-domain structure
- H01F10/08—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers
- H01F10/10—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition
- H01F10/18—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition being compounds
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0206—Manufacturing of magnetic cores by mechanical means
- H01F41/0233—Manufacturing of magnetic circuits made from sheets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/14—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for applying magnetic films to substrates
-
- H—ELECTRICITY
- 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
- H01F6/065—Feed-through bushings, terminals and joints
Abstract
The invention belongs to superconducting magnet field, particularly to a kind of superconducting magnet based on ReBCO spiral coating conductor sheet and preparation method.The agent structure of described superconducting magnet is alternately formed by stacking by superconductive pellet and insulating trip, is a piece of insulating trip between every two panels superconductive pellet；Also include current feed and fixing device.Superconductive pellet uses ReBCO coating superconductor, and superconduction face, with being laser-cut into hurricane band, is made electric current go down along hurricane band interrupted transmission by the end of welding hurricane band, is then fixed magnet by upper lower flange and pull bar.Various sizes of superconducting magnet finally carries out nesting makes the magnetic field of generation strengthen.The present invention have high-energy-density, be lost little, volume is little, avoid produce flux jumping advantage, it is easier to meet the high-end technical need such as high field intensity, high-energy-density.
Description
Technical field
The invention belongs to superconducting magnet field, particularly to a kind of superconducting magnet based on ReBCO spiral coating conductor sheet
And preparation method.
Background technology
High-intensity magnetic field is as a kind of extreme condition, it is possible to for the research physics of material, chemistry, biological nature etc., it is provided that one
Plant special environment, be widely used in fields such as material science, biological engineering, medical treatment, industry, agriculturals.
The conductive material that conventional magnet uses is copper, while producing high-intensity magnetic field, also can produce the biggest loss, in addition
In order to reach higher magnetic field intensity, the volume of conventional magnet needs to be made the biggest.By comparison, the material that superconducting magnet is used
There is the feature of zero resistance, high current density, be therefore easier to meet the high-end technical need such as high field intensity, high-energy-density, with
Time can reduce loss, reduce volume and weight.
At present, the product of second filial generation high temperature superconducting materia ReBCO (Rare Earth barium copper oxygen, Re is Y, Sm or Nd) coating superconductor
Moral character can and technology of preparing all achieve significant progress, have that upper critical field is high, critical current density is big, A.C.power loss is low
Etc. advantage, produce and application cost the most constantly declines.Based on this, it is super with ReBCO coating superconductor that the present invention proposes a kind of
The current carrying part of magnetic conductor, superconducting magnet based on second filial generation high temperature superconducting materia.
It addition, for practical superconductor, in order to avoid flux jumping phenomenon, superconductor typically uses the filament of little yardstick to tie
Structure.The superconduction face of superconductive pellet is spiral shape structure by cut by the present invention, and substrat structure is without cutting, to avoid magnetic
The logical generation jumped, improves its stability.
Summary of the invention
The invention provides a kind of superconducting magnet based on ReBCO spiral coating conductor sheet and preparation method, concrete technology
Scheme is as follows:
A kind of superconducting magnet based on ReBCO spiral coating conductor sheet, the agent structure of described superconducting magnet is by superconductive pellet
Alternately it is formed by stacking with insulating trip, is a piece of insulating trip between every two panels superconductive pellet；Also include current feed and fixing device；Institute
State fixing device and include ring flange, pull bar and fixing hole；By 1, four pull bars 41 of ring flange and corresponding four fixing holes 42
Above-mentioned superconductive pellet, insulating trip are fixed；Described fixing hole 42 is positioned on ring flange 1；
Described superconductive pellet is circular ring plate structure, and inside radius is r1, outer radius is r2, it is followed successively by substrate, buffering from the bottom to top
Layer, ReBCO thin film and protective layer, wherein, cushion, ReBCO thin film and protective layer form superconduction face；In inside radius and outer radius
Between, point centered by the superconductive pellet center of circle, with r1For bottom surface radius, with r2For end face radius, superconduction face goes out the number of turns through cut
For the spiral type groove 11 of N, substrat structure is without cutting；The width of spiral type groove is n mm.
Preferably, the sheet number of superconductive pellet is even number.
Described superconductive pellet also has inner end 13 and outer end 12.
r1And r2Span be tens millimeters to hundreds of millimeter, and r1＜ r2.The value of N be a few circle to tens of circles,
N is several millimeters.
Described insulating trip includes insulating trip I, insulating trip II；Insulating trip I, insulating trip II are circular ring plate structure, interior outer half
Footpath is identical with superconductive pellet, uses PPLP insulant；Insulating trip I is at radius r1Edge angle of release degree is the sector notch of K degree,
Fan-shaped arc length is identical with the arc length of inner end, referred to as insulating trip inner opening 21, radial depth and the width of superconductive pellet inner end 13
Spend identical；Insulating trip II is at radius r2Edge angle of release degree is the sector notch of K degree, fan-shaped arc length and the arc length phase of outer end
With, referred to as insulating trip outward opening 31, radial depth is identical with the width of superconductive pellet outer end 12.The value of K is according to the length of welding
Du Laiding.
First current feed 51 is connected with the outer end of a piece of superconductive pellet topmost, the second current feed 52 and bottom
The outer end of sheet superconductive pellet is connected.Current feed uses copper lead-in wire or superconductor line.
The nesting of superconducting magnet is that superconducting magnet different for interior outer radius is carried out nesting.The interior outer half of superconducting magnet
Footpath is from tens millimeters to hundreds of millimeter, if the outer radius of a magnet is less than the inside radius of another magnet, the most permissible
Magnet less for outer radius is nested in the inside radius of another magnet, based on this, several superconducting magnets by size by little to
Big nested successively.The magnetic field that so can make generation increases, and volume can be made again the least.
The preparation method of a kind of superconducting magnet based on ReBCO spiral coating conductor sheet: superconducting magnet
Welding is that adjacent two panels superconductive pellet is welded, and allows current to along the continual transmission in spiral helicine superconduction face.Consider
The substrate of superconductive pellet and the resistance of cushion are relatively big, so want " face-to-face " welding when welding, and i.e. will be containing ReBCO during welding
Weld between the face of coating.The superconduction of first superconductive pellet faces down, and the superconduction of second superconductive pellet is towards upper, and two panels surpasses
It it is a piece of insulating trip I between guide card；The outer end of first superconductive pellet is welded with the first current feed scolding tin, inner end and
The inner end of two superconductive pellets scolding tin welds, and both welding positions are at the inner opening of insulating trip I；3rd superconductive pellet
Superconduction faces down, and is a piece of insulating trip II between second superconductive pellet and the 3rd superconductive pellet；The outer end of second superconductive pellet
Welding with the outer end scolding tin of the 3rd superconductive pellet, both welding positions are at the outward opening of insulating trip II；By that analogy,
The outer end of last a piece of superconductive pellet is welded with the second current feed scolding tin.By above welding manner, it is ensured that every a piece of super
The sense of current on guide card is identical, so that the magnetic field that they produce is in one direction.Hundreds of superconductive pellet and insulating trip
After superposition is good, with lower flange, it is fixed, then with pull bar 41 through the fixing hole 42 of upper lower flange, uses bolt
Tighten, thus realize magnet is fixed.
Wherein, the preparation method of superconductive pellet can have a following two:
(1) first prepare ReBCO thin film to cut again:
First the substrate of second filial generation high-temperature superconductor being cut into circular ring plate, inside radius is r1, outer radius is r2, substrate can
Select nickel and alloy, Ag, Cu, Pt, Pd etc..The most existing ion beam assisted deposition (IBAD), inclined substrate deposit
The technology such as technology (ISD), Surface oxidation epitaxy (SOE), pulsed laser deposition (PLD) or sputtering method (Sputtering) are being justified
Preparing cushion on ring plate substrate, the material that cushion is conventional has Y2O3、CeO2、MgO、SrTiO3、YSZ、Gd2O3、Eu2O3Deng；
Next chemical gaseous phase is utilized to deposit (CVD), metal organic deposition (MOD), chemical solution deposition (CSD), Organometallic Chemistry
The technology such as vapour deposition (MOCVD), sol-gel process (Sol-Gel), spraying decomposition method (Spray Pyrolysis) are in buffering
Plate ReBCO thin film, the most silver-plated, Copper thin film protective layer on Ceng, form superconduction face.At r1With r2Between, with the circular ring plate center of circle
Centered by point, with r1For bottom surface radius, with r2For end face radius, on substrate, cut out, with laser, the spiral type groove that the number of turns is N
11, the degree of depth of cutting is just ReBCO layer to be cut off, thus circular ring plate r1With r2Between surface segmentation become spiral shape structure,
Recess width is n mm, then in groove 11 filling epoxy resin with ensure insulation.
Because the width of outer end is too narrow in hurricane band, it has not been convenient to the welding between superconductive pellet, also for ensureing hurricane band
Even width, so want internal outer end redesign.
Being the groove of n mm at inner side one circle hurricane band afterbody laser radially cutting width, the degree of depth is for cut substrate
Thoroughly, as inner end original position 131；Then from the beginning of inner end original position 131, along hurricane band direction of rotation, with
Inner end original position angle is that the position of K degree is not cut, only as inner end final position 132, inner end final position 132
As a labelling；Between original position 131 and final position 132, the outermost screw type of cutting the second circle hurricane band is recessed
Groove, the degree of depth of cutting is substrate cutting thoroughly.The value of K is determined according to the length of welding, thus forms inner end 13；
Outermost one is enclosed hurricane band, is easy to the position of welding at hurricane band width, is n with laser radially cutting width
The groove of mm, the degree of depth is for cut through substrate, as outer end original position 121；Then from the beginning of outer end original position 121,
Against hurricane band direction of rotation, using with the position that outer end original position 121 angle is K degree as outer end final position 122,
Outer end final position 122 does not cuts, and is only used as a labelling；Then, between original position 121 and final position 122, cut
Cutting the inner side spiral type groove of outermost layer hurricane band, the degree of depth of cutting is substrate cutting thoroughly.The value of K is according to the length of welding
Determine, thus form outer end 12.
So far, the completing of superconductive pellet.
(2) first cut and prepare ReBCO thin film again:
First the substrate of second filial generation high-temperature superconductor being cut into circular ring plate, inside radius is r1, outer radius is r2；Substrate can
Select nickel and alloy, Ag, Cu, Pt, Pd etc..At r1With r2Between, point centered by the circular ring plate center of circle, with r1For bottom surface radius,
With r2For end face radius, on substrate, cut out, with laser, the spiral type groove 11 that the number of turns is N, thus circular ring plate r1With r2It
Between surface segmentation become spiral shape structure, substrate can not be cut through during cutting, recess width is n mm, cuts inner end the most again
13 and outer end 12；Cutting method is: be the recessed of nmm at inner side one circle hurricane band afterbody laser radially cutting width
Groove, the degree of depth is for cut through substrate, as inner end original position 131；Then from the beginning of inner end original position 131, along spiral shell
Rotation band direction of rotation, using with the position that inner end original position angle is K degree as inner end final position 132, inner end is eventually
Stop bit is put 132 and is not cut, and is only used as a labelling；Between original position 131 and final position 132, cutting the second circle spiral
The outermost spiral type groove of band, the degree of depth of cutting is substrate cutting thoroughly.The value of K is determined according to the length of welding, thus
Form inner end 13；
Outermost one is enclosed hurricane band, is easy to the position of welding at hurricane band width, is n with laser radially cutting width
The groove of mm, the degree of depth is for cut through substrate, as outer end original position 121；Then from the beginning of outer end original position 121,
Against hurricane band direction of rotation, using with the position that outer end original position 121 angle is K degree as outer end final position 122,
Outer end final position 122 does not cuts, and is only used as a labelling；Then, between original position 121 and final position 122, cut
Cutting the inner side spiral type groove of outermost layer hurricane band, the degree of depth of cutting is substrate cutting thoroughly.The value of K is according to the length of welding
Determine, thus form outer end 12.
After having cut, with existing ion beam assisted deposition (IBAD), inclined substrate deposition technique (ISD), table
The technology such as face oxidation extension (SOE), pulsed laser deposition (PLD) or sputtering method (Sputtering) are made on circular ring plate substrate
For going out cushion, the material that cushion is conventional has Y2O3、CeO2、MgO、SrTiO3、YSZ、Gd2O3、Eu2O3Deng；Next utilization
Learn vapour deposition (CVD), metal organic deposition (MOD), chemical solution deposition (CSD), metal organic chemical vapor deposition
(MOCVD), the technology such as sol-gel process (Sol-Gel), spraying decomposition method (Spray Pyrolysis) plates on the buffer layer
ReBCO thin film, the most silver-plated, Copper thin film protective layer, form superconduction face.Cushion, ReBCO thin film and protective layer are all plated in
On the hurricane band of substrate, do not plate in groove.Last in groove 11 filling epoxy resin to ensure to insulate, the so far system of superconductive pellet
Complete.
The principle of the present invention is: the superconductive part of every superconductive pellet is cut into helical form, then welds superconductive pellet
Connect, make to continuously flow through every a piece of superconductive pellet along the electric current of helical path, and ensure the sense of current phase on the most a piece of
With.By the superposition of hundreds and thousands of superconductive pellets, make the magnetic field that they produce in one direction, the most total magnetic induction
It it is exactly the superposition of the magnetic induction of every a piece of generation.The most again by nested various sizes of magnet, thus produce and meet work
The magnetic field of range request.
Beneficial effects of the present invention: the present invention uses ReBCO coating material to make superconduction sheet material, has expanded high-temperature superconductor material
The range of application of material；This superconducting magnet has that energy density is high, magnetic field can be produced and consumed energy is low, volume is little, lightweight etc.
Advantage, and the superconduction face of superconductive pellet is through cutting, is avoided that generation flux jumping, it is easier to meet high field intensity, high-energy close
The high-end technical needs such as degree.
Accompanying drawing explanation
Fig. 1 is the first preparation process schematic diagram of superconductive pellet；
Fig. 2 is the second preparation process schematic diagram of superconductive pellet；
Fig. 3 (e) is the structural representation of insulating trip I, and Fig. 3 (f) is the structural representation of insulating trip II；
Fig. 4 is the connection diagram between superconductive pellet, insulating trip, current feed；
Fig. 5 is superconducting magnet structure schematic diagram；
Fig. 6 (a) is the top view that two superconducting magnets are nested, the side view that two superconducting magnets of Fig. 6 (b) are nested；
Wherein, 1-ring flange, 2-the first superconductive pellet, 3-the first insulating trip I, 4-the second superconductive pellet, 6-the first insulating trip II,
7-the 3rd superconductive pellet, 8-the second insulating trip I, 9-the 4th superconductive pellet, 10-the second insulating trip II, 14-the 5th superconductive pellet, 15-the 3rd
Insulating trip I, 16-the 6th superconductive pellet, 11-groove, 12-outer end, 121-outer end original position, 122-outer end stop bit
Put, 13-inner end, 131-inner end original position, 132-inner end final position, 21-insulating trip inner opening, 31-insulating trip
Outward opening, 51-the first current feed, 52-the second current feed, 41-pull bar, 42-fixing hole, 17-inner magnet, 18-outer magnet.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment the invention will be further described.
Embodiment 1: the first preparation process of superconductive pellet
Fig. 1 is the first preparation process schematic diagram of superconductive pellet；Wherein a-d is the specific process of superconductive pellet.
A: the substrate of second filial generation high-temperature superconductor is cut into circular ring plate, inside radius is r1, outer radius is r2；Substrate is optional
With nickel and alloy, Ag, Cu, Pt, Pd etc..
B: with existing ion beam assisted deposition (IBAD), inclined substrate deposition technique (ISD), Surface oxidation epitaxy
(SOE), the technology such as pulsed laser deposition (PLD) or sputtering method (Sputtering) prepares buffering on circular ring plate substrate
Layer, the material that cushion is conventional has Y2O3、CeO2、MgO、SrTiO3、YSZ、Gd2O3、Eu2O3Deng；Next chemical gaseous phase is utilized to sink
Long-pending (CVD), metal organic deposition (MOD), chemical solution deposition (CSD), metal organic chemical vapor deposition (MOCVD), colloidal sol-
The technology such as gel method (Sol-Gel), spraying decomposition method (Spray Pyrolysis) plate ReBCO thin film, then on the buffer layer
The most silver-plated, Copper thin film protective layer.
C: cutting auger groove: at r1With r2Between, point centered by the circular ring plate center of circle, with r1For bottom surface radius, with r2For
End face radius, goes out, by cut, the spiral type groove 11 that the number of turns is N, and the degree of depth of cutting is just ReBCO layer to be cut off, thus
Circular ring plate surface segmentation is become spiral shape structure, and recess width is n mm, then at groove 11 filling epoxy resin to ensure
Insulation.
D: outer end in cutting:
Being the groove of n mm at inner side one circle hurricane band afterbody laser radially cutting width, the degree of depth is for cut substrate
Thoroughly, as inner end original position 131；Then from the beginning of inner end original position 131, along hurricane band direction of rotation, with
Inner end original position angle is that the position of K degree is not cut, only as inner end final position 132, inner end final position 132
As a labelling；Between original position 131 and final position 132, the outermost screw type of cutting the second circle hurricane band is recessed
Groove, the degree of depth of cutting is substrate cutting thoroughly.The value of K is determined according to the length of welding, thus forms inner end 13；
Outermost one is enclosed hurricane band, is easy to the position of welding at hurricane band width, is n with laser radially cutting width
The groove of mm, the degree of depth is for cut through substrate, as outer end original position 121；Then from the beginning of outer end original position 121,
Against hurricane band direction of rotation, using with the position that outer end original position 121 angle is K degree as outer end final position 122,
Outer end final position 122 does not cuts, and is only used as a labelling；Then, between original position 121 and final position 122, cut
Cutting the inner side spiral type groove of outermost layer hurricane band, the degree of depth of cutting is substrate cutting thoroughly.The value of K is according to the length of welding
Determine, thus form outer end 12.
So far, the completing of superconductive pellet.
Embodiment 2: the second preparation process of superconductive pellet
Fig. 2 is the second preparation process schematic diagram of superconductive pellet；Wherein a-d is the specific process of superconductive pellet.
A: the substrate of second filial generation high-temperature superconductor is cut into circular ring plate, inside radius is r1, outer radius is r2；Substrate is optional
With nickel and alloy, Ag, Cu, Pt, Pd etc..
B: cutting substrate: at r1With r2Between, point centered by the circular ring plate center of circle, with r1For bottom surface radius, with r2For end face
Radius, cuts out, with laser, the spiral type groove (11) that the number of turns is N on substrate, thus circular ring plate r1With r2Between surface divide
Being slit into spiral shape structure, substrate can not be cut through during cutting, recess width is n mm.
C: outer end in cutting:
Being the groove of n mm at inner side one circle hurricane band afterbody laser radially cutting width, the degree of depth is for cut substrate
Thoroughly, as inner end original position 131；Then from the beginning of inner end original position 131, along hurricane band direction of rotation, with
Inner end original position angle is that the position of K degree is not cut, only as inner end final position 132, inner end final position 132
As a labelling；Between original position 131 and final position 132, the outermost screw type of cutting the second circle hurricane band is recessed
Groove, the degree of depth of cutting is substrate cutting thoroughly.The value of K is determined according to the length of welding, thus forms inner end 13；
Outermost one is enclosed hurricane band, is easy to the position of welding at hurricane band width, is n with laser radially cutting width
The groove of mm, the degree of depth is for cut through substrate, as outer end original position 121；Then from the beginning of outer end original position 121,
Against hurricane band direction of rotation, using with the position that outer end original position 121 angle is K degree as outer end final position 122,
Outer end final position 122 does not cuts, and is only used as a labelling；Then, between original position 121 and final position 122, cut
Cutting the inner side spiral type groove of outermost layer hurricane band, the degree of depth of cutting is substrate cutting thoroughly.The value of K is according to the length of welding
Determine, thus form outer end 12.
D: with existing ion beam assisted deposition (IBAD), inclined substrate deposition technique (ISD), Surface oxidation epitaxy
(SOE), the technology such as pulsed laser deposition (PLD) or sputtering method (Sputtering) is at the r of substrate1With r2Between hurricane band
On prepare cushion, the material that cushion is conventional has Y2O3、CeO2、MgO、SrTiO3、YSZ、Gd2O3、Eu2O3Deng；Next profit
(CVD), metal organic deposition (MOD), chemical solution deposition (CSD), metal organic chemical vapor deposition is deposited by chemical gaseous phase
(MOCVD), the technology such as sol-gel process (Sol-Gel), spraying decomposition method (Spray Pyrolysis) plates on the buffer layer
ReBCO thin film, the most silver-plated, Copper thin film protective layer.Cushion, ReBCO thin film and protective layer are all plated in the spiral of substrate
On band, do not plate in groove.Finally at groove filling epoxy resin to ensure to insulate, so far the completing of superconductive pellet.
Embodiment 3: insulating trip I, the structural representation of insulating trip II
In Fig. 2, e is the plane structure chart of insulating trip I, and f is the plane structure chart of insulating trip II, and its shape is circular ring plate,
Inside radius is r1, outer radius is r2, thickness is identical with superconductive pellet, and material is PPLP insulant.Insulating trip I is at radius r1Edge
Angle of release degree is the sector notch of K degree, and fan-shaped arc length is identical with the arc length of inner end, referred to as insulating trip inner opening 21, the deepest
Spend identical with the width of superconductive pellet inner end 13；Insulating trip II is at radius r2Edge angle of release degree is the sector notch of K degree, fan-shaped
Arc length is identical with the arc length of outer end, referred to as insulating trip outward opening 31, and radial depth is identical with the width of superconductive pellet outer end 12.
The value of K is determined according to the length of welding.The two breach is the position of end welding between superconductive pellet.
Embodiment 4: the annexation between superconductive pellet, insulating trip, current feed
Fig. 4 is the connection diagram between superconductive pellet, insulating trip, current feed.
The welding of superconducting magnet is that adjacent two panels superconductive pellet is welded, and allows current to along spiral helicine superconduction face not
The transmission being interrupted.Relatively big in view of the substrate of superconductive pellet and the resistance of cushion, so wanting " face-to-face " welding when welding, i.e.
Weld between the face containing ReBCO coating during welding.
As a example by the flow direction of the electric current i in scheming, the superconduction of first superconductive pellet faces down, the superconduction face of second superconductive pellet
Upwards, between two panels superconductive pellet it is a piece of insulating trip I；The outer end of first superconductive pellet is welded with scolding tin with the first current feed 51
Connecing, inner end 13 welds with the inner end scolding tin " face-to-face " of second superconductive pellet, and both welding positions are insulating trip I
At insulating trip inner opening 21；The superconduction of the 3rd superconductive pellet faces down, and is one between second superconductive pellet and the 3rd superconductive pellet
Sheet insulating trip II；The outer end 12 of second superconductive pellet is welded with the outer end scolding tin " face-to-face " of the 3rd superconductive pellet, and two
The welding position of person is at the insulating trip outward opening 31 of insulating trip II；By that analogy, the outer end of last a piece of superconductive pellet and the
Two current feeds 52 weld with scolding tin.By above welding manner, it is ensured that the sense of current on every a piece of superconductive pellet is identical, so that
The magnetic field that they produce is in one direction.
Embodiment 5: the overall structure of superconducting magnet
Fig. 5 is superconducting magnet structure schematic diagram, the agent structure of superconducting magnet replaced superposition by superconductive pellet and insulating trip and
Become, be a piece of insulating trip between every two panels superconductive pellet；Also include current feed and fixing device；Described fixing device includes flange
Dish, pull bar and fixing hole；By 1, four pull bars 41 of ring flange and corresponding four fixing holes 42 to above-mentioned superconductive pellet, insulating trip
It is fixed；Described fixing hole 42 is positioned on ring flange.
After hundreds of superconductive pellet superposes with insulating trip well, with lower flange, it is fixed, then uses pull bar
41 fixing holes 42 passing upper lower flange, tighten with bolt, thus realize fixing magnet.Wherein a piece of superconduction topmost
Sheet is connected with current feed with the outer end of the most a piece of superconductive pellet, it is achieved the introducing of electric current and derivation.
Embodiment 6: the nesting of multiple superconducting magnets
Fig. 6 (a) is the top view that two superconducting magnets are nested, the side view that two superconducting magnets of Fig. 6 (b) are nested.Superconduction
The nesting of magnet is that superconducting magnet different for interior outer radius is carried out nesting.The interior outer radius of superconducting magnet is from tens millimeters
To hundreds of millimeter, if the outer radius of a magnet is less than the inside radius of another magnet, then can outer radius is less
Magnet nest in the inside radius of another magnet.When magnet nesting, between inner magnet 17 and outer magnet 18, there is spacing, logical
Crossing nesting, the magnetic field that two magnets can be made to produce is overlapped mutually.Nesting can be selected according to the size of required field intensity
Number.
The above, the only citing of the specific embodiment of the invention, but protection scope of the present invention is not limited thereto,
Any those familiar with the art in the technical scope that the invention discloses, the change that can readily occur in or replacement,
All should contain within protection scope of the present invention.Therefore, protection scope of the present invention should be with scope of the claims
It is as the criterion.
Claims (13)
1. a superconducting magnet based on ReBCO spiral coating conductor sheet, it is characterised in that the agent structure of described superconducting magnet
Alternately it is formed by stacking by superconductive pellet and insulating trip, is a piece of insulating trip between every two panels superconductive pellet；Also include that current feed is with solid
Determine device；Described fixing device includes ring flange, pull bar and fixing hole；
Described superconductive pellet is circular ring plate structure, and inside radius is r1, outer radius is r2, be followed successively by from the bottom to top substrate, cushion,
ReBCO thin film and protective layer, wherein, cushion, ReBCO thin film and protective layer form superconduction face；Inside radius and outer radius it
Between, point centered by the superconductive pellet center of circle, with r1For bottom surface radius, with r2For end face radius, superconduction face goes out the number of turns through cut and is
The spiral type groove (11) of N, substrat structure is without cutting；The width of spiral type groove is n mm.
A kind of superconducting magnet based on ReBCO spiral coating conductor sheet the most according to claim 1, it is characterised in that super
The sheet number of guide card is even number.
A kind of superconducting magnet based on ReBCO spiral coating conductor sheet the most according to claim 1, it is characterised in that institute
State superconductive pellet and also there are inner end (13) and outer end (12).
A kind of superconducting magnet based on ReBCO spiral coating conductor sheet the most according to claim 1, it is characterised in that institute
State insulating trip and include insulating trip I, insulating trip II；Insulating trip I, insulating trip II are circular ring plate structure, interior outer radius and superconductive pellet
Identical, use PPLP insulant.
A kind of superconducting magnet based on ReBCO spiral coating conductor sheet the most according to claim 4, it is characterised in that absolutely
Embolium I is at radius r1Edge angle of release degree is the sector notch of K degree, and fan-shaped arc length is identical with the arc length of inner end (13), is referred to as
Insulating trip inner opening (21), radial depth is identical with the width of superconductive pellet inner end (13)；Insulating trip II is at radius r2Edge is opened
Angle is the sector notch of K degree, and fan-shaped arc length is identical with the arc length of outer end (12), referred to as insulating trip outward opening (31), footpath
Identical with the width of superconductive pellet outer end (12) to the degree of depth.
A kind of superconducting magnet based on ReBCO spiral coating conductor sheet the most according to claim 1, it is characterised in that the
One current feed (51) is connected with the outer end of a piece of superconductive pellet topmost, the second current feed (52) and a piece of superconduction in bottom
The outer end of sheet is connected.
A kind of superconducting magnet based on ReBCO spiral coating conductor sheet the most according to claim 1, it is characterised in that will
Two or more described superconducting magnets carry out nesting: when the outer radius of superconducting magnet A is less than the inside radius of superconducting magnet B
Time, superconducting magnet A is nested in the inside radius of superconducting magnet B；When superconducting magnet nesting, superconducting magnet A and superconducting magnet B
Between there is spacing.
8. the preparation method of a kind of based on ReBCO spiral coating conductor sheet the superconducting magnet described in any one of claim 1-7,
It is characterized in that, the superconduction of first superconductive pellet faces down, and the superconduction of second superconductive pellet, towards upper, between two panels superconductive pellet is
A piece of insulating trip I；The outer end of first superconductive pellet is welded with the first current feed scolding tin, inner end and second superconductive pellet
Inner end with scolding tin weld, both welding positions are at the inner opening of insulating trip I；The superconduction of the 3rd superconductive pellet towards
Under, it is a piece of insulating trip II between second superconductive pellet and the 3rd superconductive pellet；The outer end of second superconductive pellet with the 3rd
The outer end of superconductive pellet scolding tin welds, and both welding positions are at the outward opening of insulating trip II；By that analogy, the most a piece of
The outer end of superconductive pellet is welded with the second current feed scolding tin；After superconductive pellet superposes with cool guide sheet well, with lower flange pair
It is fixed, and then with pull bar 41 through the fixing hole 42 of upper lower flange, tightens with bolt, thus realizes consolidating magnet
Fixed.
Preparation method the most according to claim 8, it is characterised in that wherein, the preparation method of superconductive pellet is for first to prepare
ReBCO thin film cuts again；Particularly as follows: first the substrate of second filial generation high-temperature superconductor is cut into circular ring plate, inside radius is r1, outward
Radius is r2, substrate lays cushion, ReBCO thin film and protective layer successively, forms superconduction face；At r1With r2Between, with circle
Point centered by the ring plate center of circle, with r1For bottom surface radius, with r2For end face radius, on substrate, cut out, with laser, the spiral shell that the number of turns is N
Rotation type groove (11), the degree of depth of cutting is just superconduction face to be cut off, thus circular ring plate r1With r2Between surface segmentation become spiral
Banded structure, recess width is n mm, cuts out inner end (13) and outer end (12) the most again, and so far the making of superconductive pellet is complete
Become.
Preparation method the most according to claim 8, it is characterised in that wherein, the preparation method of superconductive pellet is for first to cut again
Preparation ReBCO thin film；Particularly as follows: first the substrate of second filial generation high-temperature superconductor is cut into circular ring plate, inside radius is r1, outer half
Footpath is r2；At r1With r2Between, point centered by the circular ring plate center of circle, with r1For bottom surface radius, with r2For end face radius, exist with laser
The spiral type groove (11) that the number of turns is N is cut out on substrate, thus circular ring plate r1With r2Between surface segmentation become spiral shape to tie
Structure, can not cut through substrate during cutting, and recess width is n mm, cuts inner end (13) and outer end (12) the most again；Cutting
Laying cushion, ReBCO thin film and protective layer after completing on substrate successively, form superconduction face, so far the making of superconductive pellet is complete
Become.
11. according to the preparation method described in claim 9 or 10, it is characterised in that cutting inner end (13) and outer end (12)
Method be respectively as follows:
Be the groove of n mm at inner side one circle hurricane band afterbody laser radially cutting width, the degree of depth for substrate is cut through,
As inner end original position (131)；Then from the beginning of inner end original position (131), along hurricane band direction of rotation, with
Inner end original position angle is that the position of K degree is not cut as inner end final position (132), inner end final position (132)
Cut, be only used as a labelling；Between original position (131) and final position (132), the outermost of cutting the second circle hurricane band
Spiral type groove, the degree of depth of cutting is substrate cutting thoroughly, thus forms inner end (13)；
Outermost one is enclosed hurricane band, is easy to the position of welding at hurricane band width, is n mm with laser radially cutting width
Groove, the degree of depth is for cut through substrate, as outer end original position (121)；Then open from outer end original position (121)
Begin, against hurricane band direction of rotation, using with the position that outer end original position (121) angle is K degree as outer end stop bit
Putting (122), outer end final position (122) does not cuts, and is only used as a labelling；Then at original position (121) and stop bit
Put between (122), the inner side spiral type groove of cutting outermost layer hurricane band, the degree of depth of cutting is substrate cutting thoroughly, thus shape
Become outer end (12).
12. preparation methoies according to claim 9, it is characterised in that cut out the spiral shell that the number of turns is N on substrate with laser
After rotation type groove (11), in groove (11), filling epoxy resin is to ensure insulation.
13. preparation methoies according to claim 10, it is characterised in that lay on substrate cushion, ReBCO thin film and
During protective layer, cushion, ReBCO thin film and protective layer are all plated on the hurricane band of substrate, do not plate in groove；In groove (11)
Filling epoxy resin is to ensure insulation.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111224389A (en) * | 2018-12-06 | 2020-06-02 | 国网江苏省电力有限公司经济技术研究院 | High-temperature superconducting direct current limiter with inductive resistance |
| CN111968854A (en) * | 2019-05-20 | 2020-11-20 | 雷科股份有限公司 | Method for laser etching thin copper coil |
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| JPS6411307A (en) * | 1987-07-03 | 1989-01-13 | Sumitomo Electric Industries | Manufacture of superconducting coil |
| CN1127050A (en) * | 1994-03-04 | 1996-07-17 | 新日本制铁株式会社 | Superconducting magnet and production method thereof |
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| JPS63268204A (en) * | 1987-04-24 | 1988-11-04 | Furukawa Electric Co Ltd:The | Superconducting magnet |
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| CN111224389A (en) * | 2018-12-06 | 2020-06-02 | 国网江苏省电力有限公司经济技术研究院 | High-temperature superconducting direct current limiter with inductive resistance |
| CN111968854A (en) * | 2019-05-20 | 2020-11-20 | 雷科股份有限公司 | Method for laser etching thin copper coil |
| CN111968854B (en) * | 2019-05-20 | 2022-07-01 | 雷科股份有限公司 | Method for laser etching thin copper coil |
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