CN102456445B - Winding method of nb3sn superconducting cable of large-size superconducting magnet - Google Patents
Winding method of nb3sn superconducting cable of large-size superconducting magnet Download PDFInfo
- Publication number
- CN102456445B CN102456445B CN2012100013835A CN201210001383A CN102456445B CN 102456445 B CN102456445 B CN 102456445B CN 2012100013835 A CN2012100013835 A CN 2012100013835A CN 201210001383 A CN201210001383 A CN 201210001383A CN 102456445 B CN102456445 B CN 102456445B
- Authority
- CN
- China
- Prior art keywords
- cable
- cables
- level
- superconducting
- sub
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- 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
Abstract
The invention discloses a winding method of an nb3sn superconducting cable of a large-size superconducting magnet. The method comprises the following steps that: a superconducting cable is formed by winding and twisting four stage sub-cables, wherein a first-stage sub-cable is twisted by using three superconductors or a mode of combining the superconductor with a copper wire; a second-stage sub-cable is formed by twisting three or four first-stage sub-cables, and a nb3sn superconducting piled yarn and the copper wire are combined by using a mixing mode in the first-stage and second-stage sub-cables; a third sub-cable is formed by twisting three or four second-stage sub-cables; a fourth-stage sub-cable is formed by twisting three or four or five third-stage sub-cables; and the surface of the fourth-stage sub-cable is overlaid by using stainless steel with the thickness of 0.05mm so as to make the nb3sn superconducting cable. According to the invention, longer torque is adopted in the former three stages of sub-cables, and shorter torque is adopted in the last-stage sub-cable; and a cable conductor in a pipe made by using the nb3sn superconducting cable can reduce even eliminate the deterioration of superconductor property caused by electromagnetism circulation.
Description
Technical field
The present invention relates generally to the superconducting magnet technical field, is specifically related to a kind of winding method of niobium three tin hyperconductive cables of large scale superconducting magnet.
Background technology
Cable-in-conduit conductor is that niobium titanium or niobium three tin superconducting wires are become hyperconductive cable by multistage twisting, hyperconductive cable is penetrated in the stainless-steel pipe again, by undergauge, moulding, is made into Cable-in-conduit conductor, adopts supercritical helium or superfluid helium to compel the stream cooling.The method has improved the contact area of superconducting line and helium, improved heat transfer condition, and so that Cable-in-conduit conductor has good self-supporting, lower A.C.power loss, required coolant are few, safe and reliable to operation, the performance high, become the first-selected conductor of large scale superconducting magnet, successful is applied in the middle of tokamak device, stellarator device and the large-scale high field super magnet.Yet, in the process that the niobium three tin-tube inner cable conductors of international thermonuclear fusion device ITER are researched and developed, find in recent years, after repeatedly electromagnetism circulated, irreversible performance degradation appearred in the superconductivity of niobium three tin superconducting conductors, and this will directly have influence on long-term stability operation of large scale superconducting magnet.
Find by a large amount of experiments, because niobium three tin materials after the heat treatment have very strong fragility, Lorentz force in the electromagnetism circulation is so that superconducting conductor has produced very large horizontal magnetic pressure, cause the internal structure of niobium three tin materials that variation has occured, produce trickle crackle in the part, thereby caused the degeneration of superconducting conductor performance.Therefore can not directly adopt the design concept of original niobium titanium Cable-in-conduit conductor, need again to improve the Cable-in-conduit conductor of employing niobium three tin superconductors and the design of hyperconductive cable, make it to have good self-supporting, minimizing even elimination are because the performance degradation that the electromagnetism circulation causes.
Summary of the invention
Be the irreversible performance degenerate problem that niobium three tin-tube inner cable conductors in the solution prior art occur after repeatedly electromagnetism circulates, producing can the large scale superconducting magnet that move steady in a long-term.
The invention provides a kind of winding method of niobium three tin hyperconductive cables of superconduction large scale superconducting magnet, adopt niobium three tin Superconducting Strands and copper strand wire minute level Four to carry out twisting, what torque before increasing is so that better contact between the strand in the hyperconductive cable has had good self-supporting; Reduce simultaneously the torque of hyperconductive cable afterbody, reduce the A.C.power loss of superconducting conductor.
The niobium three tin hyperconductive cables of large scale superconducting magnet provided by the invention, also adopt the mixed mode of taking of niobium three tin Superconducting Strands and copper cash, both satisfied superconducting conductor to superconductor and the long-pending requirement of copper face, also guaranteed the even distribution of Superconducting Strand in conductor inside, also reduce simultaneously the consumption of Superconducting Strand, saved production cost.This method for designing is so that the design of hyperconductive cable is more flexible and practical.
The present invention adopts following technical scheme to achieve these goals:
The winding method of the niobium three tin hyperconductive cables of large scale superconducting magnet is characterized in that may further comprise the steps:
(1) according to the needs of magnet heat protection after the requirement of the condition of work of superconducting conductor, superconducting magnet shunting temperature and the quench, calculate the number of required Superconducting Strand and copper cash, and the building form of configuration hyperconductive cable, guarantee that Superconducting Strand and copper cash are in the inner evenly distribution of hyperconductive cable;
(2) first order stranded cable, be stranding into the one-level cable by three Superconducting Strands or superconducting line and copper cash combination, utilize single twist cabling machine, adopt the mode of initiatively back twist to twist system, cross mould and steady footpath, torque is chosen as 32-34 that the one-level cable crosses diameter behind the mould doubly, and long torque has guaranteed support good between strand, thereby can guarantee that the hyperconductive cable in the superconducting magnet larger displacement and distortion can not occur under electromagnetic force; Adopt the mode of stress FEEDBACK CONTROL that the stress of each strand is regulated, guarantee that stress distribution is even between each strand, guarantee that simultaneously the pulling force of every strand is less than 20N.
(3) second level stranded cable, be stranding into the secondary cable by three to four one-level cables, can adopt identical one-level cable, also can adopt mixed the taking of one-level cable of different component to form, both satisfy the long-pending requirement of copper face of superconduction area and the magnet quenching after heat protection needs of magnet needs current-carrying, saved again the consumption of Superconducting Strand; Utilize single twist cabling machine, adopt the mode of initiatively back twist to twist system, cross mould and steady footpath, torque is chosen as 28-32 that the secondary cable crosses diameter behind the mould doubly; The position in reasonable disposition draw drum and unwrapping wire hole in the stranded cable process guarantees that position distribution is symmetrical between each sub-cable.
(4) third level stranded cable is stranding into three grades of cables by three to four sub-cables of secondary, utilizes single twist cabling machine, adopts the mode of initiatively back twist to twist system, crosses mould and steady footpath, and torque is chosen as 20-22 that the secondary cable crosses diameter behind the mould doubly; Adopt the external diameter of the in real time measurement of the instruments such as girth chi, vernier caliper and laser diameter measuring instrument and monitoring cable.
(5) fourth stage stranded cable is stranding into the level Four cable by three to five three grades of sub-cables, utilizes 1+6/1250 type cabler, adopts the mode of initiatively back twist to twist system; Adopt three road wolfram steel moulds that hyperconductive cable is pressed undergauge, so that the voidage of cable reaches 38-42%, to guarantee the even distribution of hyperconductive cable in superconducting conductor; The 14-16 that torque is chosen as diameter behind the level Four cable undergauge doubly, shorter torque has reduced the couple current loss between strand, thereby can reduce the A.C.power loss of superconducting magnet; Require hyperconductive cable without wire jumper, not damaged, cable overall dimension is even, without ellipse or fried dough twist situation.
(6) level Four cable surface adopts the thick stainless steel band of 0.05mm to carry out the 45-55% stacked package, requires steel band smooth, does not crumple, and does not break; Thereby be made into niobium three tin hyperconductive cables.Assembling " drift " before the cable take-up, the outside dimension of online detection streamer is to guarantee the poling requirement.
The torque of hyperconductive cable of the present invention is generally selected 10-30 times of the sub-cable compression diameter of this grade, in front what sub-cable, adopt long torque, especially the sub-cable of the first order, can guarantee like this mechanical stability of cable, so that better contact between the strand in the hyperconductive cable has had good self-supporting; In the end in the sub-cable of one-level, adopt shorter torque, can reduce the A.C.power loss of superconducting conductor; In the stranded cable process, all sub-cable direction of lays are right, and are consistent with the direction of lay of Superconducting Strand inner filaments.The torque of noting simultaneously cable can not be the integral multiple of its sub-cable torque, can avoid like this couple current loss that causes because of geometric resonance.
Hyperconductive cable all adopts the stranded mode of the sub-cable of level Four, the triangle cable that the sub-cable choice structure of the first order is more stable.Can use pure copper wire to twist system with superconducting line in the cable; Superconducting Strand passes through to select different compound modes with pure copper wire; satisfy the long-pending requirement of copper face of superconduction area and the magnet quenching after heat protection needs of magnet needs current-carrying; simultaneously; guarantee to separate copper cash in the stranded cable mode symmetrical in cable, avoid CURRENT DISTRIBUTION inhomogeneous.As: adopt two kinds of different one-level cables, be respectively 2 superconducting lines+1 copper cash, and 3 superconducting lines, the secondary cable adopts two the first one-level cables and two the second one-level cable strand systems to form.So both guarantee the superconduction of conductor needs and the area of copper, saved again the usage quantity of superconducting line, so that the design of hyperconductive cable is more flexible and practical.
The outermost layer of hyperconductive cable adopts the thick 316L stainless steel band of 0.05mm to carry out 50% stacked package; can guarantee that hyperconductive cable keeps overall dimension in tension-free situation; prevent that in the process of electric cable transporting dust and impurity are to the pollution of hyperconductive cable; simultaneously can also in the process of Cable-in-conduit conductor poling, play certain protective effect to hyperconductive cable, prevent the friction between Superconducting Strand surface and the stainless steel armor.
Beneficial effect of the present invention:
(1) the present invention can better contact between the strand in the hyperconductive cable, thereby obtain good self-supporting by the torque of what sub-cable before increasing in the hyperconductive cable; By reducing the torque of hyperconductive cable afterbody, reduced the A.C.power loss of superconducting conductor simultaneously.
(2) the present invention is by adopting the mixed mode of taking of niobium three tin Superconducting Strands and copper cash, both satisfied the superconducting conductor requirement long-pending to copper face, also guarantee the even distribution of Superconducting Strand in conductor inside, also reduced simultaneously the consumption of Superconducting Strand, saved production cost.This method for designing is so that the design of hyperconductive cable is more flexible and practical.
(3) the present invention utilizes the hyperconductive cable of the method winding method making to be processed into Cable-in-conduit conductor, can reduce even eliminate because the performance degradation problem that the electromagnetism circulation causes, produce can operation steady in a long-term large scale superconducting magnet, this hyperconductive cable has been successfully applied in the middle of the testing coil of the outer superconducting magnet of 40T hybrid magnet.
Description of drawings
Fig. 1 is process flow diagram of the present invention.
Embodiment:
Embodiment 1:The winding method of the niobium three tin hyperconductive cables of large scale superconducting magnet may further comprise the steps:
(1) according to the condition of work of superconducting conductor, calculate the number of required Superconducting Strand and copper cash, and the building form of configuration hyperconductive cable, guarantee that Superconducting Strand and copper cash are in the inner evenly distribution of hyperconductive cable;
(2) first order stranded cable is stranding into the one-level cable by three Superconducting Strands or superconducting line and copper cash combination, crosses mould and steady footpath, and torque is chosen as the one-level cable and crosses 33 times of diameter behind the mould;
(3) second level stranded cable is stranding into the secondary cable by three to four one-level cables, can adopt identical one-level cable, also can adopt mixed the taking of one-level cable of different component to form, and crosses mould and steady footpath, and torque is chosen as the secondary cable and crosses 30 times of diameter behind the mould;
(4) third level stranded cable is stranding into three grades of cables by three to four sub-cables of secondary, crosses mould and steady footpath, and torque is chosen as the secondary cable and crosses 21 times of diameter behind the mould;
(5) fourth stage stranded cable is stranding into the level Four cable by three to five three grades of sub-cables, crosses mould and undergauge, and the voidage of cable is controlled at 40%, and torque is chosen as 15 times of diameter behind the level Four cable undergauge;
(6) level Four cable surface adopts the thick stainless steel band of 0.05mm to carry out 50% stacked package, is made into niobium three tin hyperconductive cables.
Embodiment 2:As shown in Figure 1, the winding method of the niobium three tin hyperconductive cables of large scale superconducting magnet, may further comprise the steps: hyperconductive cable adopts the stranded mode coiling of level Four cable to form, mode by copper cash 1 and superconducting line 2 combinations is twisted into the first one-level cable 3, is twisted into the second one-level cable 4 by three superconducting lines 2; Be twisted into secondary cable 5 by the mixed mode of taking of four two kinds different one-level cables; Be twisted into three grades of cables 6 by four secondary cables 5 again; Be twisted into level Four cable 7 by five three grades of cables 6, cross mould and undergauge, and adopt the thick 316L stainless steel band of 0.05mm to carry out 50% stacked package on its surface, be made into niobium three tin hyperconductive cables.
Claims (1)
1. the winding method of the niobium three tin hyperconductive cables of a large scale superconducting magnet is characterized in that may further comprise the steps:
(1) according to the condition of work of superconducting conductor, calculates the number of required Superconducting Strand and copper cash;
(2) first order stranded cable is stranding into the one-level cable by the combination of three Superconducting Strands and copper cash, crosses mould and steady footpath, and torque is chosen as 32-34 that the one-level cable crosses diameter behind the mould doubly;
(3) second level stranded cable is stranding into the secondary cable by three to four one-level cables, can adopt identical one-level cable, also can adopt mixed the taking of one-level cable of different component to form, and crosses mould and steady footpath, and torque is chosen as 28-32 that the secondary cable crosses diameter behind the mould doubly;
(4) third level stranded cable is stranding into three grades of cables by three to four sub-cables of secondary, crosses mould and steady footpath, and torque is chosen as 20-22 that the secondary cable crosses diameter behind the mould doubly;
(5) fourth stage stranded cable is stranding into the level Four cable by three to five three grades of sub-cables, crosses mould and undergauge, and the voidage of cable is controlled at 38-42%, and the 14-16 that torque is chosen as diameter behind the level Four cable undergauge doubly;
(6) level Four cable surface adopts the thick stainless steel band of 0.05mm to carry out the 40-50% stacked package, is made into niobium three tin hyperconductive cables.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100013835A CN102456445B (en) | 2012-01-05 | 2012-01-05 | Winding method of nb3sn superconducting cable of large-size superconducting magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100013835A CN102456445B (en) | 2012-01-05 | 2012-01-05 | Winding method of nb3sn superconducting cable of large-size superconducting magnet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102456445A CN102456445A (en) | 2012-05-16 |
| CN102456445B true CN102456445B (en) | 2013-02-20 |
Family
ID=46039525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100013835A Expired - Fee Related CN102456445B (en) | 2012-01-05 | 2012-01-05 | Winding method of nb3sn superconducting cable of large-size superconducting magnet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102456445B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105989930B (en) * | 2016-01-28 | 2018-08-14 | 中国科学院等离子体物理研究所 | A kind of manufacturing method of the cable of high temperature superconducting materia |
| CN112466554B (en) * | 2020-11-17 | 2022-05-31 | 中国科学院合肥物质科学研究院 | Low-temperature superconducting cable treatment process for high-current high-temperature superconducting current lead |
| CN112820470A (en) * | 2021-01-05 | 2021-05-18 | 中国科学院合肥物质科学研究院 | MgB2CICC conductor structure and manufacturing method thereof |
| CN114783682B (en) * | 2022-06-17 | 2022-09-09 | 西部超导材料科技股份有限公司 | Preparation method of low-temperature direct-current twisted pair for quantum computer |
| CN116759154B (en) * | 2023-08-16 | 2023-11-17 | 西安聚能超导线材科技有限公司 | Preparation method of superconducting wire with short production period and ultra-low copper ratio |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002023557A1 (en) * | 2000-09-15 | 2002-03-21 | Southwire Company | Superconducting cable |
| CN100487823C (en) * | 2005-06-17 | 2009-05-13 | 中国科学院电工研究所 | High-temperature superconducting cable coiling machine and cable coiling method |
| CN101123130A (en) * | 2007-09-07 | 2008-02-13 | 宝胜科技创新股份有限公司 | Making method for low temperature super-conductive cable conductor of ITER system |
| CN201112013Y (en) * | 2007-09-07 | 2008-09-10 | 宝胜科技创新股份有限公司 | Low temperature superconductivity cable conductor for ITER system |
| CN101694908B (en) * | 2009-09-30 | 2011-05-25 | 中国科学院等离子体物理研究所 | Low temperature superconducting assembly with low joint resistance for high temperature superconducting current lead cold end |
| CN101982862B (en) * | 2010-09-14 | 2012-02-08 | 中国科学院电工研究所 | Vacuum impregnation device of Nb3Sn superconducting coil and impregnation method thereof |
| JP5305109B2 (en) * | 2010-12-15 | 2013-10-02 | 住友電気工業株式会社 | Superconducting cable manufacturing method |
-
2012
- 2012-01-05 CN CN2012100013835A patent/CN102456445B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN102456445A (en) | 2012-05-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Celentano et al. | Design of an industrially feasible twisted-stack HTS cable-in-conduit conductor for fusion application | |
| CN102456445B (en) | Winding method of nb3sn superconducting cable of large-size superconducting magnet | |
| Muzzi et al. | Design, manufacture, and test of an 80 kA-class Nb3Sn cable-in-conduit conductor with rectangular geometry and distributed pressure relief channels | |
| US20140302997A1 (en) | Superconducting Power Cable | |
| CN108140714A (en) | HTS magnet subregions | |
| Takahashi et al. | Cabling Technology of $\hbox {Nb} _ {3}\hbox {Sn} $ Conductor for ITER Central Solenoid | |
| CN111613384B (en) | CICC conductor of ReBCO high-temperature superconducting tape and manufacturing method thereof | |
| CN103295695B (en) | System with superconductivity three-phase power transfer element | |
| Qin et al. | Cabling technology of Nb 3 Sn conductor for CFETR central solenoid model coil | |
| CN110808122A (en) | CICC conductor based on critical current quasi-isotropy high-engineering current density high-temperature superconducting strand | |
| CN116072372B (en) | Fusion reactor superconducting magnet system based on high-temperature superconductivity | |
| Spina et al. | Recent Development and Status of Ex-Situ PIT MgB 2 Wires at ASG Superconductors | |
| CN110931162A (en) | Self-shielding cold insulation direct current high-temperature superconducting current-limiting cable | |
| Du et al. | Status and progress on an HTS strand with quasi-isotropic critical current | |
| Zhao et al. | Mechanical characterization of a 10-MJ HTS SMES magnet wound by quasi-isotropic strands and directly stacked tape conductors | |
| Qin et al. | Manufacture of ITER feeder sample conductors | |
| Zhang et al. | 3D mechanical design and stress analysis of 20 T common-coil dipole magnet for SppC | |
| Ten Kate | Super-Conductors for Successful Magnets | |
| Feng et al. | Manufacture and acceptance test of the full size ITER PF5 conductor sample | |
| CN105989930A (en) | Manufacturing method for cable of high temperature superconducting material | |
| Nabara et al. | Procurement of Nb 3 Sn superconducting conductors in ITER | |
| Kováč et al. | MgB2 wires with Ti and NbTi barrier made by IMD process | |
| Barzi et al. | Nb3Sn cable development for the 11 T DS dipole demonstration model | |
| Hira et al. | Theoretical and experimental investigation of R&W and W&R SMES coils wound with large-scale MgB2 Rutherford cables operated around liquid hydrogen temperature | |
| Wang et al. | Study on critical current of a flexible quasi-isotropic HTS conductor with high engineering current density |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130220 Termination date: 20150105 |
|
| EXPY | Termination of patent right or utility model |