CN1658343A - Reinforcing device and method for high-temp superconducting coil - Google Patents
Reinforcing device and method for high-temp superconducting coil Download PDFInfo
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- CN1658343A CN1658343A CN 200410022898 CN200410022898A CN1658343A CN 1658343 A CN1658343 A CN 1658343A CN 200410022898 CN200410022898 CN 200410022898 CN 200410022898 A CN200410022898 A CN 200410022898A CN 1658343 A CN1658343 A CN 1658343A
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Abstract
This invention relates to a strengthening equipment of high-temperature superconducting coil and the strengthening method. This equipment includes the coil frame, the coil is rolled around the frame with epoxy barrel outside, and the two ends of the coil frame separately have the upper and the lower port plates. The strengthening method includes: 1. roll the coil around the coil frame; 2. elicit the down-lead from the hole of the upper port plate and stick the down-lead to the upper port plate; 3. block the epoxy barrel on the coil; 4. gum the chuck on the epoxy barrel; 5.enlace the glass riband on the epoxy barrel; 6. dry; 7. discharge the chuck from the epoxy barrel; 8. separately set the upper and the lower port plates at the two ends of the coil frame and stick them together; 9. the pull-rod through the upper and the lower port plates strains the coil. This invention can greatly improve the mechanic intensity of high-temperature superconducting equipment, and does not influence the cooling effect of superconducting coil. Its structure is simple, compact and convenient for use.
Description
Technical field
The invention belongs to the superconduction electrical technology field, be specifically related to a kind of bracing means and reinforcement means of high temperature superconductor coil.
Background technology
Present high temperature superconductor coil mainly comes coiling by Bi based high-temperature superconductive strip Bi-2223.In addition, also useful Bi based high-temperature superconductive strip Bi-2212, Y based high-temperature superconductive strip YBCO and other belt material of high temperature superconduct are as the current of high temperature superconductor coil.Because these belt material of high temperature superconduct have higher critical temperature, may operate in liquid nitrogen temperature (77K) under and by higher current density, therefore, the high temperature superconductive wire coil apparatus of use belt material of high temperature superconduct coiling is obtaining application more and more widely.Simultaneously, because the second type high temp superconductor is mainly ceramic material, this has just determined that there is bigger defective in its mechanical properties, although some superconducting tape company has developed some new technologies and has solved this problem, strengthen the combined high temperature superconducting tape such as the stainless steel that American Superconductor Corp. releases, but it is very limited for the mechanical strength that improves lead itself, in particular for big electric current high-intensity magnetic field device or be far from being enough when being used for to produce under the emergency case device of big electromagnetic force, at this moment, the mechanical strength that how to improve high temperature superconductor coil is exactly vital.
As everyone knows, when current is in the external magnetic field, will be subjected to the effect dF=Idl * B of electromagnetic force, therefore, the lead at the coil middle part mainly is subjected to the effect of the width of cloth to power; And the end of relatively dispersing in magnetic field, lead not only is subjected to the effect of the width of cloth to power, but also is subjected to the effect of axial force.Fig. 1 is the magnetic line of force distribution map of an air core coil, and Fig. 2 is the schematic diagram of the suffered electromagnetic force of coil, and Fig. 3 a and Fig. 3 b are typical two winding transformer winding force diagram, and Fig. 4 is the variation diagram (I of the normalizing critical current of U.S. ASC company fine silver jacket band with stress
C0=120A).As seen from the figure, after the suffered stress of superconducting tape was greater than a certain critical value, its critical current descended rapidly.Therefore, how effective fastening high-temperature superconductor winding improves its mechanical stability, and making the suffered stress value of its band under any operation conditions is very crucial less than its critical stress value all.
Summary of the invention
Technical problem to be solved by this invention is the shortcoming at existing high-temperature superconductor, provide a kind of and can effectively eliminate the destruction that electromagnetic force causes high temperature superconductor coil, improve mechanic intensity of high-temperature greatly, and do not influence the bracing means and the reinforcement means of the high temperature superconductor coil of coil heat radiation substantially.
The technical scheme that solution the technology of the present invention problem is adopted is the bracing means of this high temperature superconductor coil, comprise coil rack, coil winding is on coil rack, and coil has epoxy cylinder outward, the coil rack two ends have upper head plate and bottom plate respectively, have pull bar to pass upper head plate and bottom plate.
The reinforcement means of this high temperature superconductor coil may further comprise the steps:
1. with coil winding on coil rack;
2. draw in the fairlead of turnover lead-in wire with coil, and it is bonding with upper head plate to go between by upper head plate;
3. epoxy cylinder is stuck on the coil outer surface;
4. use " clip " on the epoxy cylinder outer surface, epoxy cylinder to be tightened;
The glass tape that 5. will scribble low temperature glue is banded on the epoxy cylinder outer surface;
6. dry, make the low temperature glue full solidification on the glass tape;
7. " clip " unloaded from the epoxy cylinder outer surface;
8. upper head plate and bottom plate are placed the coil rack two ends respectively and be bonded together with coil rack;
9. pass upper head plate with pull bar and bottom plate is strained coil vertically.
The present invention is simple in structure, compact and easy to implement.
Description of drawings
The present invention is described in further detail below in conjunction with the embodiment accompanying drawing.
Fig. 1 is the magnetic line of force distribution map of air core coil
Fig. 2 is the schematic diagram of the suffered electromagnetic force of coil
Fig. 3 a is a two winding transformer winding force diagram
Fig. 3 b is a two winding transformer winding force diagram
Fig. 4 is the variation diagram of the normalizing critical current of fine silver jacket band with stress
Fig. 5 is the structural representation of the embodiment of the invention 1
Fig. 6 is the structural representation of bottom plate
Fig. 7 is the structural representation of the embodiment of the invention 2
Fig. 8 is the structural representation of coil rack in the embodiment of the invention 3
Fig. 9 is the structural representation of epoxy cylinder in the embodiment of the invention 3
Among the figure: 1-upper head plate 2-bottom plate 3-epoxy cylinder 4-coil 5-coil rack 6-pull bar 7-fairlead 8-glass tape 9,14-cooling holes 10-epoxy packing ring 11-epoxy thin plate 12,13-stay 15-circular hole 16-circular groove
Embodiment
Embodiment 1:
Fig. 5 is the bracing means structural representation of solenoid coil of the present invention.The coil of superconductor (4) is wound on the coil rack (5), and coil rack (5) adopts the epoxy skeleton, and coil has epoxy cylinder (3) outward.
Cooling effect in order to ensure coil (4) inner conductor, on coil rack (5), be drilled with many cooling holes (9), the size of cooling holes (9) and quantity have been played factors such as mechanical strength decision after the cooling holes (9) according to the width of coil (4) and coil rack (5), under the prerequisite that does not influence mechanical strength, cooling holes (9) is big more, quantity is many more, and then cooling effect is good more.After coil (4) coiling was intact, the turnover of coil (4) lead-in wire was drawn by the fairlead (7) on the upper head plate (1), and will go between and upper head plate (1) is bonded together with low temperature glue.To comprise two semicircular ring then, the epoxy cylinder (3) that its internal diameter equals the external diameter of coil (4) is stuck on the coil outer surface, cooling holes on the epoxy cylinder (3) also will be taken into account mechanical strength and cooling effect and decide, and its thickness will be subjected to the restriction of factors such as mechanical strength and fit-up gap.After epoxy cylinder (3) installs, be stuck in epoxy cylinder (3) uniformly with several roads stainless steel " clip " and go up the outer surface chucking, the glass tape (8) that will scribble low temperature glue simultaneously is bundled on epoxy cylinder (3) outer surface.The width of the colligation bar number of stainless steel " clip " and glass tape (8) and glass tape (8) and twine the diameter of axial height, coil (4) of thickness sight line circle (4) and coil (4) under various service conditionss electromagnetic force and decide, along with the different of superconducting coil application scenario and difference that device is big or small and different.In the present embodiment, the width of glass tape is 1～3cm, and the quantity of " clip " is glass tape (8) quantity ± 1.After glass tape (8) winds, dry a period of time (about 10～20h) at room temperature, low temperature glue on glass tape (8) no longer flows with deadweight, it is low temperature glue full solidification, guarantee that simultaneously high temperature superconductive wire is not destroyed by high temperature, intensive drying in drying oven unloads " clip " on the coil (4) then at last.Leave 1 circular groove at upper head plate (1) and bottom plate (2) the inside, the two ends of coil rack (5) are inserted in respectively in the circular groove (16) on the upper and lower end plate (1,2), and promptly upper head plate (1), bottom plate (2) place coil rack (5) two ends respectively and are bonded together with low temperature glue and coil rack (5).The circular hole (15) that has pull bar (6) to pass on upper head plate (1) and the bottom plate (2) is strained whole device vertically.
Embodiment 2:
Fig. 7 is the bracing means structural representation of the two cake formula bridging coils of the present invention.Its assembly method is described basic identical with embodiment 1, different is to have an epoxy thin plate (11) that coil (4) is flattened in the outlet of advancing of two cake formula bridging coils (4), its thickness is identical with the thickness of epoxy cylinder (3), has cooling holes (14) on the epoxy thin plate (11).Epoxy packing ring (10) is arranged between per two coils (4), and epoxy cylinder (3) is two semicircular ring, and its internal diameter equals the external diameter of coil (4), and its radian sum is less than 2 π, and epoxy cylinder has cooling holes on (3).
Embodiment 3:
Fig. 8 is the structural representation of coil rack of the present invention (5), and Fig. 9 is the structural representation of epoxy cylinder of the present invention (3).Stay (12) is arranged on the coil rack (5), stay (12) on coil rack (5) and the coil rack (5) all is that epoxy resin is made, stay (12) can be to process on the direct-on-line ring framework (5), also can be independent processing, then " some glue " is bonded on the coil rack (5), and the purpose of " some glue " is to avoid leaving air-gap between coil rack (5) and stay (12) and produce discharge.Among Fig. 9, the stay (13) on epoxy cylinder (3) and the epoxy cylinder (3) all is to be made by epoxy resin, and stay (13) is evenly distributed on the inboard of epoxy cylinder (3).The outer surface of stay (12) and stay (13) is circular-arc, and it is fully contacted with coil (4), is unlikely to produce stress and concentrates.The number of stay (12) and stay (13) is with external diameter in the coil, the suffered width of cloth of lead of forming coil is decided to the size of power, stay (12) and stay (13) will provide abundant fulcrum for coil (4), and the unlikely lead that makes is stressed too big and occur bending and deformation so that damage coil (4).Stay (12) length on the coil rack (5) is less than the height of coil rack (5), respectively have one section like this (about 5～10mm) do not have stay, so that coil rack (5) is inserted in upper head plate (1) and the bottom plate (2) at the head and the tail two ends of coil rack (5).Like this, this cooling duct of being made up of stay (12) is compared with cooling holes, and cooling effect is better.Identical among remaining structure and the embodiment 1 in the present embodiment.
The present invention can improve mechanic intensity of high-temperature greatly, does not influence the cooling effect of superconducting coil basically, and is simple in structure, compact and easy to implement.
Claims (10)
1, a kind of bracing means of high temperature superconductor coil comprises coil rack (5), and coil (4) is wound on the coil rack (5), and it is characterized in that has epoxy cylinder (3) outside the coil (4), and coil rack (5) two ends have upper head plate (1) and bottom plate (2) respectively.
2, the bracing means of high temperature superconductor coil according to claim 1, (6) pass upper head plate (1) and bottom plate (2) to it is characterized in that pull bar is arranged.
3, the bracing means of high temperature superconductor coil according to claim 1 and 2, (8) are bundled on the outer surface of epoxy cylinder (3) to it is characterized in that glass tape is arranged.
4, the bracing means of high temperature superconductor coil according to claim 1 and 2 is characterized in that epoxy cylinder (3) is two semicircular ring, and its internal diameter equals the external diameter of coil (4).
5, the bracing means of high temperature superconductor coil according to claim 4 is characterized in that cooling holes or stay (13) can be arranged on the epoxy cylinder (3).
6, the bracing means of high temperature superconductor coil according to claim 1 and 2 is characterized in that cooling holes (9) or stay (12) can be arranged on the coil rack (5).
7, the bracing means of high temperature superconductor coil according to claim 1 is characterized in that upward leaded hole (7) of upper head plate (1).
8, the bracing means of high temperature superconductor coil according to claim 1 is characterized in that between the coil (4) epoxy packing ring (10) being arranged.
9, a kind of reinforcement means of high temperature superconductor coil is characterized in that may further comprise the steps:
1. coil (4) is wound on the coil rack (5);
2. draw in the fairlead (7) of turnover lead-in wire with coil (4), and it is bonding with upper head plate (1) to go between by upper head plate (1);
3. epoxy cylinder (3) is stuck on coil (4) outer surface;
4. use " clip " on epoxy cylinder (3) outer surface, epoxy cylinder to be tightened;
The glass tape (8) that 5. will scribble low temperature glue is banded on epoxy cylinder (3) outer surface;
6. dry, make the low temperature glue full solidification on the glass tape (8);
7. " clip " unloaded from epoxy cylinder (3) outer surface;
8. upper head plate (1) and bottom plate (2) are placed coil rack (5) two ends respectively and be bonded together with coil rack (5);
9. use pull bar (6) to pass upper head plate (1) and bottom plate (2) is strained coil (4) vertically.
10, the reinforcement means of high temperature superconductor coil according to claim 9 is characterized in that drying is dry a period of time at room temperature, and the low temperature glue on glass tape (8) no longer flows with deadweight, again intensive drying in drying oven.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410022898 CN1658343A (en) | 2004-02-16 | 2004-02-16 | Reinforcing device and method for high-temp superconducting coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410022898 CN1658343A (en) | 2004-02-16 | 2004-02-16 | Reinforcing device and method for high-temp superconducting coil |
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| Publication Number | Publication Date |
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| CN1658343A true CN1658343A (en) | 2005-08-24 |
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| CN 200410022898 Pending CN1658343A (en) | 2004-02-16 | 2004-02-16 | Reinforcing device and method for high-temp superconducting coil |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101499351B (en) * | 2008-10-29 | 2010-04-21 | 中国科学院电工研究所 | Coil used for fast impulse superconducting magnet winding structure |
| CN102062843A (en) * | 2010-11-23 | 2011-05-18 | 中国科学院电工研究所 | Open type superconductivity MRI (magnetic resonance imaging) magnet system with iron core and capable of cancelling electromagnetic force by self |
| CN101512688B (en) * | 2006-09-04 | 2011-08-17 | 西门子公司 | Armored superconducting winding and method for the production thereof |
| CN102496439A (en) * | 2011-12-01 | 2012-06-13 | 西部超导材料科技有限公司 | Framework applied to superconductive solenoid magnet |
| CN102723162A (en) * | 2012-07-09 | 2012-10-10 | 中国科学院电工研究所 | Coil for stainless steel framed Nb3Sn superconducting solenoid |
| CN102723161A (en) * | 2012-07-09 | 2012-10-10 | 中国科学院电工研究所 | Solenoid coil of ceramic framework superconducting magnet |
| CN102760547A (en) * | 2012-07-30 | 2012-10-31 | 西部超导材料科技股份有限公司 | Pull rod device of conduction cooling superconducting magnet coil |
| CN103050247A (en) * | 2012-12-27 | 2013-04-17 | 吴江市变压器厂有限公司 | Clamp-free transformer winding and binding method thereof |
| CN104183355A (en) * | 2013-11-12 | 2014-12-03 | 上海联影医疗科技有限公司 | Superconducting magnet system and shielding coil assembly |
| CN105304262A (en) * | 2015-11-27 | 2016-02-03 | 云南电网有限责任公司电力科学研究院 | High-temperature superconducting coil apparatus for alternating-current magnetic field |
| EP3723105A1 (en) | 2019-04-09 | 2020-10-14 | Bruker Switzerland AG | Reinforced superconducting wire |
| CN112792203A (en) * | 2020-12-23 | 2021-05-14 | 华中科技大学 | Axial reinforcement method and device for electromagnetic forming coil |
-
2004
- 2004-02-16 CN CN 200410022898 patent/CN1658343A/en active Pending
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101512688B (en) * | 2006-09-04 | 2011-08-17 | 西门子公司 | Armored superconducting winding and method for the production thereof |
| CN101499351B (en) * | 2008-10-29 | 2010-04-21 | 中国科学院电工研究所 | Coil used for fast impulse superconducting magnet winding structure |
| CN102062843A (en) * | 2010-11-23 | 2011-05-18 | 中国科学院电工研究所 | Open type superconductivity MRI (magnetic resonance imaging) magnet system with iron core and capable of cancelling electromagnetic force by self |
| CN102496439B (en) * | 2011-12-01 | 2013-04-24 | 西部超导材料科技有限公司 | Framework applied to superconductive solenoid magnet |
| CN102496439A (en) * | 2011-12-01 | 2012-06-13 | 西部超导材料科技有限公司 | Framework applied to superconductive solenoid magnet |
| CN102723162A (en) * | 2012-07-09 | 2012-10-10 | 中国科学院电工研究所 | Coil for stainless steel framed Nb3Sn superconducting solenoid |
| CN102723161A (en) * | 2012-07-09 | 2012-10-10 | 中国科学院电工研究所 | Solenoid coil of ceramic framework superconducting magnet |
| CN102723161B (en) * | 2012-07-09 | 2013-12-04 | 中国科学院电工研究所 | Solenoid coil of ceramic framework superconducting magnet |
| CN102760547A (en) * | 2012-07-30 | 2012-10-31 | 西部超导材料科技股份有限公司 | Pull rod device of conduction cooling superconducting magnet coil |
| CN102760547B (en) * | 2012-07-30 | 2014-06-04 | 西部超导材料科技股份有限公司 | Pull rod device of conduction cooling superconducting magnet coil |
| CN103050247A (en) * | 2012-12-27 | 2013-04-17 | 吴江市变压器厂有限公司 | Clamp-free transformer winding and binding method thereof |
| CN103050247B (en) * | 2012-12-27 | 2015-10-28 | 吴江变压器有限公司 | A kind of Transformer Winding without folder and binding method thereof |
| CN104183355A (en) * | 2013-11-12 | 2014-12-03 | 上海联影医疗科技有限公司 | Superconducting magnet system and shielding coil assembly |
| CN104183355B (en) * | 2013-11-12 | 2017-04-05 | 上海联影医疗科技有限公司 | Superconducting magnet system and shielded coil component |
| CN105304262A (en) * | 2015-11-27 | 2016-02-03 | 云南电网有限责任公司电力科学研究院 | High-temperature superconducting coil apparatus for alternating-current magnetic field |
| EP3723105A1 (en) | 2019-04-09 | 2020-10-14 | Bruker Switzerland AG | Reinforced superconducting wire |
| US11031155B2 (en) | 2019-04-09 | 2021-06-08 | Bruker Switzerland Ag | Reinforced superconducting wire, superconducting cable, superconducting coil and superconducting magnet |
| CN112792203A (en) * | 2020-12-23 | 2021-05-14 | 华中科技大学 | Axial reinforcement method and device for electromagnetic forming coil |
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