CN110098015A - The narrow silk structure of high-temperature superconductor and its processing method - Google Patents
The narrow silk structure of high-temperature superconductor and its processing method Download PDFInfo
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- CN110098015A CN110098015A CN201910305241.XA CN201910305241A CN110098015A CN 110098015 A CN110098015 A CN 110098015A CN 201910305241 A CN201910305241 A CN 201910305241A CN 110098015 A CN110098015 A CN 110098015A
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- narrow
- temperature superconductor
- narrow silk
- narrowband
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B12/00—Superconductive or hyperconductive conductors, cables, or transmission lines
- H01B12/02—Superconductive or hyperconductive conductors, cables, or transmission lines characterised by their form
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- 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
- H01F41/04—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 for manufacturing coils
- H01F41/048—Superconductive coils
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/60—Superconducting electric elements or equipment; Power systems integrating superconducting elements or equipment
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Abstract
The narrow silk structure of high-temperature superconductor of the present invention and its processing method, comprising: narrow silk, multiple narrow silks are axially distributed along coil；Wherein narrow silk includes a plurality of narrowband.Compared with prior art, the present invention more easily optimizes superconducting coil structure, does not reduce the feature performance benefit of two generation superconducting tapes, do not increase band production cost and R & D Cost substantially with following the utility model has the advantages that based on the Stack Technology that narrows.By novel loop construction, A.C.power loss and bucking current field are reduced significantly.The application in terms of magnet coil is enclosed online for two generation high-temperature superconductor bands provides better performance.
Description
Technical field
The invention belongs to high-temperature superconductor field, the narrow silk structure of especially a kind of high-temperature superconducting magnet performance and its processing side
Method.
Background technique
Second-generation high-temperature superconductor is the superconducting conductor application development direction of current mainstream.In high external magnetic field strength
In the case of, second-generation high-temperature superconductor has the critical current density more relatively higher than low-temperature superconducting conductor.Therefore, in high magnetic
In field magnet application, two generation high-temperature superconductor bands have very big application prospect.However, since two generation high-temperature superconductor bands are flat
Thin geometry is put down, in magnet coil application, A.C.power loss and bucking current field can all reduce coil performance.Bucking current
Field will lead to the time drift that superconducting magnet central magnetic field reduces and generates magnetic field.Due to magnet generation magnetic field's regularity and surely
Qualitative is highly important for superconducting magnets applications such as actual Magnetic resonance imaging (MRI) and accelerators, therefore two generations are high
The actual magnet of temperature superconductive band is using there is also certain difficulties.
The prior art 1, Chinese invention patent " superconducting magnetic coil " (application number: 00812272.5) disclose superconducting coil
And its manufacturing method includes wind with one heart and around the axis of coil along a kind of superconducting tape of axis be set with, to limit one with edge
Opening of the axis direction from the first end of coil to second end decreasing dimensions.Each circle of superconducting tape all has holding basic
The wide surface parallel with the axis of coil.
But the prior art 1 describes superconducting coil and flat superconducting coil with cone or tapered profile.
The prior art 2, Chinese invention patent " structure of high temperature superconductor wire " (application number: 200680027034.3) public
The superconductive wire for having opened stacking includes superconductive wire component, and it includes the first superconductor inserts and the second superconductor to be inserted into
Object, first superconductor insert include the first high temperature superconductor layer being covered on the first substrate, second superconductor insertion
Object includes the second high temperature superconductor layer being covered on the second substrate.First and second superconductor inserts are in its respective substrate
Place is combined together.Conducting structures are essentially around the superconductive wire component.
But the prior art 2 is substantially sandwiched in HTS layer the centre of total, two such components respective
It is bonded together to form single HTS wire assembly at copper strips.
The prior art 3, United States Patent (USP) " Stacked Filamentary Coated Superconductors " (application
Number: 10/955801) disclose An elongated article comprising a first layer of oxide
superconductor filaments extending substantially along the length of the
elongated article and spaced apart from one another across the width of the
elongated substrate；a second layer of oxide superconductor filaments
extending substantially along the length of the elongated article and spaced
apart from one another across the width of the elongated article,wherein the
first filament layer is positioned above the second filament layer；and a
barrier layer positioned between the first and second filament layers,wherein
the filaments of the first and second filament layers are positioned such
that at least one filament of the first layer crosses at least one filament
of the second layer.
But the prior art 3 stacks the band of four layers of Roebel structure.
The prior art 4, Jikwang Lee, Seungwook Lee, Myungjin Park, and Gueesoo Cha,
“Magnetization Loss in HTS Stacked Tapes by Various Directional External
Magnetic Fields,"IEEE Trans.Appl.Superconduct.,vol.14,no.2,pp.630–633,2004.It is main
It wants content: having studied and stack the property difference that band and single layer band are generated due to screen effect, compare outside different angle
The magnetic loss of band is stacked under magnetic field environment under the magnetic loss and different insulative thickness of single layer band and stacking band.Experiment
And simulation result indicates that magnetic loss can be reduced by stacking band, the smaller loss of insulation thickness is lower.
The prior art 5, Myungjin Park, Myeongseob Choi, Seungyong Hahn, Gueesoo Cha,
and Jikwang Lee,“Effect of the Stack in HTS Tapes Exposed to External
Magnetic Field,”IEEE Trans.Appl.Superconduct.,vol.14,no.2,pp.1106–1109,2004。
Main contents: have studied the different numbers of plies stack bands magnetic loss and different insulative thickness under stack the magnetic loss of band.With
Mei Chao company production 4.1mm wide BSCCO-2223 band be model experiment, when stacking number increases to 4 by 2,3 magnetic loss by
Decrescence small, the smaller magnetic loss of band insulation thickness of the identical stacked number of plies is smaller.
The prior art 6, Seungwook Lee, HeeJoon Lee, Gueesoo Cha, and Jikwang Lee,
“Comparison of AC Losses of HTS Pancake Winding With Single Tape and Multi-
Stacked Tape,"IEEE Trans.Appl.Superconduct.,vol.15,no.2,2005.Main contents: it is stacking
Due to the screen effect that adjacent tapes generate in band, critical current and A.C.power loss characteristic are not simple each layer strip properties
The sum of value.It compared the different numbers of plies in text and stack the critical current of band, and be utilized respectively single layer band and stack the height of band
The A.C.power loss of temperature superconductive disk-type winding.
The prior art 7, K.Ryu, B.J.Choi, and Y.H.Chun, " Magnetization Loss
Characteristics in a Stack of Bi-2223Tapes,”IEEE Trans.Appl.Superconduct.,
vol.13,no.2,2003.Main contents: it measures the magnetic loss of single strips first with the accuracy of confirmatory experiment, compared
Single strips are with stacking band respectively in magnetic loss parallel, under vertical and longitudinal magnetic field.
Summary of the invention
For the defects in the prior art, the object of the present invention is to provide a kind of high-temperature superconductors for solving above-mentioned technical problem
Narrow silk structure and its processing method.
In order to solve the above-mentioned technical problem, the narrow silk structure of high-temperature superconductor of the present invention, comprising: narrow silk, multiple narrow silks are along coil
Axial distribution；Wherein narrow silk includes a plurality of narrowband.
Preferably, the size of narrow silk is 1.1 millimeters × 0.33 millimeter.
Preferably, narrow silk includes three narrowbands.
Preferably, the size of narrowband is 1.0 millimeters × 0.1 millimeter.
A kind of processing method of the narrow silk structure of high-temperature superconductor, includes the following steps:
Step 1, narrowband is obtained by machine cuts；
Step 2, narrowband is integrated into narrow silk；
Step 3, the axial direction by multiple narrow silks along coil is arranged.
Preferably, step 2 includes:
Step 2.1, by a plurality of narrowband via scaling powder gluing；
Step 2.2, the narrowband after gluing is put into furnace and is heated；
Step 2.3, the narrowband after heated is fixed, obtains narrow silk.
Preferably, in step 2.1, by three narrowbands via scaling powder gluing.
Preferably, in step 2.2, the narrowband after gluing is put into the tin furnace full of scolding tin and is heated.
Preferably, it in step 2.3, completes to fix by scolding tin, obtains narrow silk.
Preferably, it in step 2.3, completes to fix by cooling scolding tin.
Compared with prior art, the present invention more easily optimizes with following the utility model has the advantages that based on the Stack Technology that narrows
Superconducting coil structure, does not reduce the feature performance benefit of two generation superconducting tapes, does not increase band production cost and R & D Cost substantially.
By novel loop construction, A.C.power loss and bucking current field are reduced significantly.It is enclosed online for two generation high-temperature superconductor bands
Application in terms of magnet coil provides better performance.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon.
Fig. 1 is schematic structural view of the invention；
Fig. 2 is A.C.power loss of the present invention measurement；
Fig. 3 is bucking current field measurement of the present invention；
Fig. 4 is flow process chart of the present invention.
In figure:
The narrow silk 3- coil of the narrowband 1- 2-
Specific embodiment
The present invention is described in detail combined with specific embodiments below.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field
For personnel, without departing from the inventive concept of the premise, several changes and improvements can also be made.These belong to the present invention
Protection scope.
The present invention proposes a kind of Novel magnetic body loop construction based on the optimization of two generation band performances.The coil can retain
Under two generation high-temperature superconductor band High-Fields while performance, improve its there are the shortcomings that, effectively reduce A.C.power loss and shielding electricity
Flow field.It is implemented as carrying out the stacking that narrows for the biggish two generations high-temperature superconductor band of regular width, is keeping superconducting tape
On the basis of critical current is almost the same, the new coil of coiling turn-to-turn structure more crypto set.
As shown in Figure 1 to 4, the present invention is narrowed two conventional generation high-temperature superconductor bands by mechanical cutting techniques, is obtained
Superconductive tape 1, specific size are 1.0 millimeters × 0.1 millimeter.
By Stack Technology, by superconductive tape 1 via scaling powder, by being full of the tin furnace of scolding tin, after by cooling scolding tin
It completes to fix, realizes that superconductive tape 1 is integrated into narrow silk 2.The superconduction belt material critical current of same batch production is with strip width
Directly proportional, superconductive tape 1 will lead to the decline of critical current since width narrows, and not be able to satisfy application requirement.Therefore, pass through
It ensure that the critical of whole critical current and routine superconduction broadband using the mode that more superconductive tapes 1 of integration are the narrow silk 2 of superconduction
Electric current is almost the same.2 size of narrow silk being made of three superconductive tapes 1 are as follows: 1.1 millimeters × 0.33 millimeter.
Compared with the existing technology 1, the present invention be directed to the essential structure of progress is negatively affected caused by superconducting coil bandlet
Optimization；And the prior art 1 is superconducting coil and flat superconducting coil with cone or tapered profile.
Compared with the existing technology 2, the prior art 2 is substantially sandwiched in HTS layer the centre of total, two such group
Part is bonded together to form single HTS wire assembly at respective copper strips；And the present invention is a kind of new coil optimization structure,
It is effectively improved superconducting coil existing defect in practical applications.
Compared with the existing technology 3, the prior art 3 stacks the band of four layers of Roebel structure；And the present invention be for
Loop construction is modified, uses the thought for the stacking that narrows to optimize superconducting coil performance.
Compared with the existing technology 4, the prior art 4 uses stacked structure, but material is first generation high-temperature superconductor band, and
And also it is not directed to actual loop construction.
Compared with the existing technology 5, the prior art 5 uses stacked structure, but material is first generation high-temperature superconductor band, not
With the technology of narrowing, also optimizes without actual loop construction and explore.
Compared with the existing technology 6, the structure that the prior art 6 stacks band in disk-type winding can still effectively reduce exchange
Loss, using is first generation high-temperature superconductor band, not with the technology that narrows, also optimizes without actual loop construction and visits
Rope.
Compared with the existing technology 7, stack band can effectively reduce magnetic loss under lesser perpendicualr field, and the prior art 7 is adopted
Also optimize without actual loop construction and explore not with the technology that narrows for first generation high-temperature superconductor band.
Winding structure superior new superconductive coil more compact: compared with conventional superconducting coil, since superconducting tape is wide
Degree changes, and in the space that can accommodate 1 circle originally, can now accommodate 4 circles to 5 circles, the axial every layer of the number of turns of coil 3 increases；Thus total
In the case that the number of turns remains unchanged, radial the number of turns can also be reduced to original a quarter or less.Loop construction is more compact, can collect
It is middle to generate higher central magnetic field.
Narrow silk structure can possess the critical electric current value for meeting practical application request, the global magnetic field generated can keep with often
It is almost the same to advise superconducting coil；Simultaneously as the width of band narrows, narrow silk structure has effectively been contained harmful in band superconducting layer
The flowing of vortex so that A.C.power loss and bucking current field can effectively reduce 80%, this result is that with the width of band at
Direct ratio.By improving the ill-effect in superconducting magnet application, the narrow silk structural strengthening spatially uniform of superconducting magnet and
Time stability, hence it is evident that improve Superconducting Magnet.
The present invention passes through actual test, demonstrates the outstanding reduction effect to A.C.power loss and bucking current field, hence it is evident that mention
High magnet coil performance, there is very big potentiality in high-temperature superconducting magnet application.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited to above-mentioned
Particular implementation, those skilled in the art can make a variety of changes or modify within the scope of the claims, this not shadow
Ring substantive content of the invention.In the absence of conflict, the feature in embodiments herein and embodiment can any phase
Mutually combination.
Claims (10)
1. a kind of narrow silk structure of high-temperature superconductor characterized by comprising
Narrow silk, multiple narrow silks are axially distributed along coil；Wherein
Narrow silk includes a plurality of narrowband.
2. the narrow silk structure of high-temperature superconductor according to claim 1, which is characterized in that the size of narrow silk be 1.1 millimeters ×
0.33 millimeter.
3. the narrow silk structure of high-temperature superconductor according to claim 1, which is characterized in that narrow silk includes three narrowbands.
4. the narrow silk structure of high-temperature superconductor according to claim 1, which is characterized in that the size of narrowband is 1.0 millimeters × 0.1
Millimeter.
5. a kind of processing method of the narrow silk structure of high-temperature superconductor, which comprises the steps of:
Step 1, narrowband is obtained by machine cuts；
Step 2, narrowband is integrated into narrow silk；
Step 3, the axial direction by multiple narrow silks along coil is arranged.
6. the processing method of the narrow silk structure of high-temperature superconductor according to claim 5, which is characterized in that step 2 includes:
Step 2.1, by a plurality of narrowband via scaling powder gluing；
Step 2.2, the narrowband after gluing is put into furnace and is heated；
Step 2.3, the narrowband after heated is fixed, obtains narrow silk.
7. the processing method of the narrow silk structure of high-temperature superconductor according to claim 6, which is characterized in that in step 2.1, by three
Bar narrowband is via scaling powder gluing.
8. the processing method of the narrow silk structure of high-temperature superconductor according to claim 6, which is characterized in that in step 2.2, will stick
Narrowband after connecing is put into the tin furnace full of scolding tin and is heated.
9. the processing method of the narrow silk structure of high-temperature superconductor according to claim 6, which is characterized in that in step 2.3, by welding
Tin is completed to fix, and obtains narrow silk.
10. the processing method of the narrow silk structure of high-temperature superconductor according to claim 9, which is characterized in that in step 2.3, by
Cooling scolding tin is completed to fix.
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| CN201910305241.XA CN110098015A (en) | 2019-04-16 | 2019-04-16 | The narrow silk structure of high-temperature superconductor and its processing method |
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| CN201910305241.XA CN110098015A (en) | 2019-04-16 | 2019-04-16 | The narrow silk structure of high-temperature superconductor and its processing method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5581220A (en) * | 1994-10-13 | 1996-12-03 | American Superconductor Corporation | Variable profile superconducting magnetic coil |
| CN1371519A (en) * | 1999-07-23 | 2002-09-25 | 美国超导体公司 | Superconducting magnetic coil |
| CN105869782A (en) * | 2016-04-06 | 2016-08-17 | 上海交通大学 | Preparation method of high-temperature superconducting line |
| CN205645397U (en) * | 2016-04-19 | 2016-10-12 | 上海交通大学 | High -temperature superconducting tape packaging structure is piled up to narrow silkization |
-
2019
- 2019-04-16 CN CN201910305241.XA patent/CN110098015A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5581220A (en) * | 1994-10-13 | 1996-12-03 | American Superconductor Corporation | Variable profile superconducting magnetic coil |
| CN1371519A (en) * | 1999-07-23 | 2002-09-25 | 美国超导体公司 | Superconducting magnetic coil |
| CN105869782A (en) * | 2016-04-06 | 2016-08-17 | 上海交通大学 | Preparation method of high-temperature superconducting line |
| CN205645397U (en) * | 2016-04-19 | 2016-10-12 | 上海交通大学 | High -temperature superconducting tape packaging structure is piled up to narrow silkization |
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Application publication date: 20190806 |
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