CN103943301A - Superconducting composite winding - Google Patents
Superconducting composite winding Download PDFInfo
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- CN103943301A CN103943301A CN201410197321.5A CN201410197321A CN103943301A CN 103943301 A CN103943301 A CN 103943301A CN 201410197321 A CN201410197321 A CN 201410197321A CN 103943301 A CN103943301 A CN 103943301A
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- superconducting coil
- ybco
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Abstract
The invention discloses a superconducting composite winding formed by winding MgB2 wires and YBCO strips. The superconducting composite winding is composed of a YBCO superconducting coil, a YBCO superconducting coil framework, an MgB2 superconducting coil, an MgB2 superconducting coil framework, a coil upper supporting plate, a coil lower supporting plate and a coil interlayer copper plate. The YBCO superconducting coil is wound on the YBCO superconducting coil framework, the MgB2 superconducting coil is wound on the MgB2 superconducting coil framework, the MgB2 superconducting coil framework is installed outside the YBCO superconducting coil framework, and the coil upper supporting plate and the coil lower supporting plate are installed on the upper portion of the YBCO superconducting coil and the lower portion of the YBCO superconducting coil respectively. The price of MgB2 superconducting materials is much lower than that of the YBCO superconducting strips, the cost of the composite winding formed by winding the MgB2 wires and the YBCO strips is much lower than the cost of a single-YBCO winding, and the superconducting composite winding is suitable for being applied to superconducting magnets with the magnetic field intensity being 3-5T.
Description
Technical field
The present invention relates to a kind of superconducting magnet built-up coil, particularly a kind of employing MgB
2the superconduction combination winding of wire rod and the coiling of YBCO band.
Background technology
Adopt variety classes superconductor coiling superconduction combination winding to be widely used in high-intensity magnetic field cryogenic magnet field.Magnetic field distributes and reduces gradually to external diameter center from internal diameter center in superconducting magnet.Superconduction combination winding mainly adopts two kinds of designs, and the one, in superconducting magnet, near inner-diameter portion whose, adopt the higher superconductor of critical magnetic field, magnet is near the outside lower superconductor of critical magnetic field, the commonly Nb of adopting
3the combination winding of Sn and NbTi; Another kind is near inner-diameter portion whose, to adopt the larger superconducting wire of sectional area in superconducting magnet, and magnet is near the outside less superconducting wire of sectional area that adopts, and winding is combined in commonly NbTi layering.The object of superconduction combination winding is that the current capacity by maximum using superconductor reduces magnet cost.
YBCO belt material of high temperature superconduct and MgB
2superconducting wire can be applied on the liquid helium warm area of 4.2K, is suitable for operation temperature area at the refrigeration machine conduction cooling superconducting magnet of 10-25K.Utilize MgB
2superconducting wire and YBCO belt material of high temperature superconduct can coiling the superconduction combination winding that is applied to refrigeration machine refrigeration.Current YBCO superconducting tape has been realized industrialization, obtains certain application in many practical engineering project, and business YBCO superconducting tape adopts vacuum deposition method preparation, and cost is high, and can only be processed into band specification.Adopt powder-in-tube technique to prepare MgB
2new superconduction material, low price, wire is easy to be processed into various shape specification.Current MgB
2new superconduction material mainly contains wire rod and two kinds of shape specification of band.Band is applicable to coiling disc coil, and wire rod is applicable to coiling cylindrical layer winding.MgB
2the critical current density of superconducting wire is higher than MgB
2superconducting tape, so adopt MgB
2the winding volume of superconducting wire coiling is less.
Summary of the invention
In order effectively to reduce the superconduction winding cost that adopts single Y BCO conductor, the present invention proposes a kind of MgB
2the combination winding of superconducting wire and the coiling of YBCO superconducting tape.Combination winding internal magnetic field is higher, adopts the coiling of YBCO superconducting tape; External magnetic field is lower, adopts MgB
2superconducting wire.MgB
2new superconduction material product mainly contains wire rod and two kinds of shape specification of band, MgB
2the critical current density of superconducting wire is higher than MgB
2superconducting tape, adopts MgB
2the combination winding of superconducting wire and the coiling of YBCO belt material of high temperature superconduct can increase MgB
2the accounting of superconductor, further reduces superconducting magnet cost and volume.
For solving the problems of the technologies described above, the present invention has adopted following technical scheme:
A superconduction combination winding, comprises YBCO superconducting coil, YBCO superconducting coil skeleton, MgB
2superconducting coil, MgB
2superconducting coil skeleton, coil upper backup pad, coil lower supporting plate and coil interlayer conduction cooling plate; YBCO superconducting coil is wound on YBCO superconducting coil skeleton; MgB
2superconducting coil is wound on MgB
2on superconducting coil skeleton, coil upper backup pad and coil lower supporting plate are contained in respectively YBCO superconducting coil upper and lower, and described YBCO superconducting coil is formed by the coiling of YBCO band, are positioned at combination winding inner, described MgB
2superconducting coil is by MgB
2wire rod coiling forms, and is positioned at combination winding outside, YBCO superconducting coil and MgB
2superconducting coil is wound on respectively separately on skeleton, MgB
2it is outside that superconducting coil skeleton is contained in YBCO superconducting coil skeleton, at MgB
2superconducting coil skeleton lower plate is opened a skewed slot, the corresponding YBCO superconducting coil of described skewed slot bottom YBCO band extraction location, and YBCO superconducting coil is by above-mentioned skewed slot and MgB
2superconducting coil connects.
In said structure basis, described skewed slot width is 1 ~ 20 millimeter, can make YBCO band pass through, groove to MgB
2between superconducting coil skeleton internal diameter tangent line, angle is acute angle, and identical with YBCO band direction of winding, makes YBCO band try one's best level and smooth cabling to MgB
2superconducting coil skeleton (4).
In said structure basis, YBCO superconducting coil is shaped as circle or racetrack-type rotor coil, and winding structure is cake formula structure or core structure.
On said structure basis, further, MgB
2superconducting coil (3) is shaped as circle or racetrack-type rotor coil, MgB
2superconducting coil (3) winding structure is the core structure of circle wire rod or square wire rod coiling.
When YBCO superconducting coil is cake formula structure, between YBCO superconducting coil, adopt series system, the coaxial closed assembly of each YBCO superconducting coil skeleton.
Further, YBCO band and MgB
2wire rod can adopt and be welded to connect.
Described combination winding adopts refrigeration machine to conduct cooling, the cooling or cold helium gas cooling of liquid helium immersion, and working temperature is below 20K.
First the present invention is wound on YBCO superconducting coil on YBCO superconducting coil skeleton, and YBCO superconducting coil can adopt cake formula or core structure.Then by MgB
2it is outer that superconducting coil skeleton is enclosed within YBCO superconducting coil, and fix by the upper and lower supporting bracket of coil, simultaneously at MgB
2superconducting coil skeleton is opened a tiny skewed slot and is convenient to YBCO superconducting coil cabling, then by YBCO superconducting tape and MgB
2superconducting wire welds and continues coiling MgB
2superconducting coil.MgB
2superconducting coil is taked core structure coiling.In combination winding, each disc coil adopts series system unification by a current source supply.MgB
2the ratio of superconducting coil and YBCO superconducting coil is determined by Distribution of Magnetic Field, for choosing of operating current design, must be less than MgB simultaneously
2with the critical current of YBCO superconducting coil under each self-magnetic field.Take working temperature 20K as example, when external magnetic field is 2T, MgB
2superconducting wire critical current density and the YBCO critical current density under perpendicualr field is basic identical, so generally choose 2T, is line of demarcation, the combination winding that is 5T for central field, MgB
2coil accounting should be no more than 40%.Final ratio also needs to consider in detail according to the design of magnet.
The present invention's beneficial effect is compared with prior art:
1, with respect to adopting Nb
3sn and NbTi low-temperature superconducting combination winding, adopt MgB
2the combination winding of superconducting coil and the coiling of YBCO superconducting coil, can be applied in higher cryogenic temperature, reduces refrigeration cost, increases the stability of superconduction winding operation, meanwhile, can effectively reduce the superconduction winding cost that adopts single Y BCO.
2, MgB
2the critical current density of superconducting wire is higher than MgB
2superconducting tape, so adopt MgB
2the winding volume of superconducting wire coiling is less, and wire rod is more suitable for coiling drum type coil, outside MgB simultaneously
2superconducting coil adopts cartridge type coiling.
3, according to material shape characteristic, band is more suitable for the coiling of cake formula, more easily changes and damages or degeneration part, so inner YBCO superconducting coil can further adopt the series connection of cake formula structure.
4, MgB
2on superconducting coil skeleton, the situation that a skewed slot can effectively avoid YBCO superconducting tape too to be bent is opened in relevant position, is convenient to YBCO superconducting coil and MgB
2connection between superconducting coil.
Accompanying drawing explanation
Fig. 1 is that the present invention partly cuts open schematic cross-section.
Fig. 2 is MgB of the present invention
2superconducting coil skeleton schematic diagram.
Embodiment
Below in conjunction with the drawings and specific embodiments, further illustrate the present invention.
As shown in Figure 1, combination winding is by YBCO superconducting coil 1, YBCO superconducting coil skeleton 2, MgB
2superconducting coil 3, MgB
2superconducting coil skeleton 4,, coil upper backup pad 5 and coil lower supporting plate 6 form.YBCO superconducting coil 1 is wound on YBCO superconducting coil skeleton 2, and YBCO superconducting coil 1 is taked the coiling of cake formula structure, and stacked combination, inserts coil interlayer conduction cooling plate 7 between every layer, and coil connects the upper series connection that adopts.After the coiling of YBCO superconducting coil completes, be contained on lower supporting plate 6, and in its outer cover MgB
2superconducting coil skeleton 4.At MgB
2superconducting coil skeleton 4 lower plates are opened a skewed slot, the corresponding YBCO superconducting coil of described skewed slot 1 bottom YBCO band extraction location, and skewed slot width is 1 ~ 20mm, groove makes YBCO band try one's best smooth excessiveness to MgB to the direction of winding of postponing
2on superconducting coil skeleton 4, YBCO superconducting tape is by skewed slot and MgB
2superconducting wire series connection, then MgB
2superconducting coil 3 adopts core structure to be wound on MgB
2on superconducting coil skeleton 4.
Fig. 2 is MgB
2superconducting coil skeleton schematic diagram.As shown in Figure 2, skewed slot 8 is opened at MgB
2superconducting coil skeleton 4 lower plates, width is 1 ~ 20mm, groove to MgB
2between superconducting coil skeleton internal diameter tangent line, angle is acute angle, and identical with YBCO band direction of winding, makes YBCO band try one's best level and smooth cabling to MgB
2superconducting coil skeleton.
Description for the understanding of embodiment is only to understand the present invention for helping, rather than is used for limiting of the present invention.Those skilled in the art all can utilize thought of the present invention to carry out some changes and variation, as long as its technological means does not depart from thought of the present invention and main points, still within protection scope of the present invention.
Claims (7)
1. a superconduction combination winding, is characterized in that: comprise YBCO superconducting coil (1), YBCO superconducting coil skeleton (2), MgB
2superconducting coil (3), MgB
2superconducting coil skeleton (4), coil upper backup pad (5), coil lower supporting plate (6) and coil interlayer copper coin (7); YBCO superconducting coil (1) is wound on YBCO superconducting coil skeleton (2); MgB
2superconducting coil (3) is wound on MgB
2superconducting coil skeleton (4) is upper, and coil upper backup pad (5) and coil lower supporting plate (6) are contained in respectively YBCO superconducting coil (1) upper and lower, and described YBCO superconducting coil (1) is formed by the coiling of YBCO band, is positioned at combination winding inner, described MgB
2superconducting coil (3) is by MgB
2wire rod coiling forms, and is positioned at combination winding outside, YBCO superconducting coil (1) and MgB
2superconducting coil (3) is wound on respectively separately on skeleton, MgB
2superconducting coil skeleton (4) is contained in YBCO superconducting coil skeleton (2) outside, in described MgB2 superconducting coil skeleton (4) lower plate, open a skewed slot, corresponding YBCO superconducting coil (1) bottom YBCO of described skewed slot band extraction location, YBCO superconducting coil (1) is by above-mentioned skewed slot and MgB
2superconducting coil (3) connects.
2. a kind of superconduction combination winding as claimed in claim 1, is characterized in that: described skewed slot width is 1 ~ 20 millimeter, can make YBCO band pass through, groove to MgB
2between superconducting coil skeleton internal diameter tangent line, angle is acute angle, and identical with YBCO band direction of winding, makes YBCO band try one's best level and smooth cabling to MgB
2superconducting coil skeleton (4).
3. a kind of superconduction combination winding as claimed in claim 1 or 2, is characterized in that: YBCO superconducting coil (1) is shaped as circle or racetrack-type rotor coil, and winding structure is cake formula structure or core structure.
4. a kind of superconduction combination winding as claimed in claim 1 or 2, is characterized in that: MgB
2superconducting coil (3) is shaped as circle or racetrack-type rotor coil, MgB
2superconducting coil (3) winding structure is the core structure of circle wire rod or square wire rod coiling.
5. a kind of superconduction combination winding as claimed in claim 3, is characterized in that: when YBCO superconducting coil (1) is cake formula structure, adopt series system between YBCO superconducting coil (1), the coaxial closed assembly of each YBCO superconducting coil skeleton (2).
6. a kind of superconduction combination winding as described in claim 1 or 2 or 5, is characterized in that: YBCO band and MgB
2wire rod adopts and is welded to connect.
7. a kind of superconduction combination winding as claimed in claim 6, is characterized in that: described combination winding adopts refrigeration machine to conduct cooling, the cooling or cold helium gas cooling of liquid helium immersion, and working temperature is below 20K.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410197321.5A CN103943301A (en) | 2014-05-12 | 2014-05-12 | Superconducting composite winding |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410197321.5A CN103943301A (en) | 2014-05-12 | 2014-05-12 | Superconducting composite winding |
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| CN103943301A true CN103943301A (en) | 2014-07-23 |
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| CN201410197321.5A Pending CN103943301A (en) | 2014-05-12 | 2014-05-12 | Superconducting composite winding |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105761871A (en) * | 2016-05-04 | 2016-07-13 | 扬州大学 | Double helical high-temperature superconducting magnet energy-storing device |
| CN106504849A (en) * | 2016-12-14 | 2017-03-15 | 云南电网有限责任公司电力科学研究院 | A kind of high temperature superconductive wire ring framework |
| CN109300645A (en) * | 2018-11-14 | 2019-02-01 | 广东电网有限责任公司 | A kind of high-temperature superconducting energy storage winding |
| CN110873852A (en) * | 2018-08-30 | 2020-03-10 | 西部超导材料科技股份有限公司 | Preparation method of sample for WIC (wire in wire) inlaid critical current measurement |
| CN112414439A (en) * | 2020-11-12 | 2021-02-26 | 北京交通大学 | Skeleton structure for detecting quench signal of high-temperature superconducting coil in real time |
| CN115020061A (en) * | 2022-05-16 | 2022-09-06 | 上海交通大学 | Detachable superconducting coil structure with low joint resistance and winding method thereof |
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| JPH06151168A (en) * | 1992-11-13 | 1994-05-31 | Sumitomo Electric Ind Ltd | Superconducting magnet and manufacture thereof |
| JPH11214214A (en) * | 1998-01-26 | 1999-08-06 | Sumitomo Heavy Ind Ltd | Hybrid superconducting magnet |
| US20040113503A1 (en) * | 2002-10-07 | 2004-06-17 | Fsu Research Foundation, Inc. | Superconducting levitation magnet |
| JP2007053211A (en) * | 2005-08-17 | 2007-03-01 | Kobe Steel Ltd | Superconducting magnet |
| CN103035353A (en) * | 2012-12-17 | 2013-04-10 | 中国科学院电工研究所 | Compound winding made of Bi-based and Y-based high-temperature superconducting tapes |
| CN203871104U (en) * | 2014-05-12 | 2014-10-08 | 中国东方电气集团有限公司 | Superconducting combined winding |
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2014
- 2014-05-12 CN CN201410197321.5A patent/CN103943301A/en active Pending
Patent Citations (6)
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| JPH06151168A (en) * | 1992-11-13 | 1994-05-31 | Sumitomo Electric Ind Ltd | Superconducting magnet and manufacture thereof |
| JPH11214214A (en) * | 1998-01-26 | 1999-08-06 | Sumitomo Heavy Ind Ltd | Hybrid superconducting magnet |
| US20040113503A1 (en) * | 2002-10-07 | 2004-06-17 | Fsu Research Foundation, Inc. | Superconducting levitation magnet |
| JP2007053211A (en) * | 2005-08-17 | 2007-03-01 | Kobe Steel Ltd | Superconducting magnet |
| CN103035353A (en) * | 2012-12-17 | 2013-04-10 | 中国科学院电工研究所 | Compound winding made of Bi-based and Y-based high-temperature superconducting tapes |
| CN203871104U (en) * | 2014-05-12 | 2014-10-08 | 中国东方电气集团有限公司 | Superconducting combined winding |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105761871A (en) * | 2016-05-04 | 2016-07-13 | 扬州大学 | Double helical high-temperature superconducting magnet energy-storing device |
| CN106504849A (en) * | 2016-12-14 | 2017-03-15 | 云南电网有限责任公司电力科学研究院 | A kind of high temperature superconductive wire ring framework |
| CN110873852A (en) * | 2018-08-30 | 2020-03-10 | 西部超导材料科技股份有限公司 | Preparation method of sample for WIC (wire in wire) inlaid critical current measurement |
| CN109300645A (en) * | 2018-11-14 | 2019-02-01 | 广东电网有限责任公司 | A kind of high-temperature superconducting energy storage winding |
| CN112414439A (en) * | 2020-11-12 | 2021-02-26 | 北京交通大学 | Skeleton structure for detecting quench signal of high-temperature superconducting coil in real time |
| CN115020061A (en) * | 2022-05-16 | 2022-09-06 | 上海交通大学 | Detachable superconducting coil structure with low joint resistance and winding method thereof |
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Application publication date: 20140723 |