CN1244816C - Superconductor high-temperature strip critical current measurnig method and apparatus - Google Patents
Superconductor high-temperature strip critical current measurnig method and apparatus Download PDFInfo
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- CN1244816C CN1244816C CNB021309000A CN02130900A CN1244816C CN 1244816 C CN1244816 C CN 1244816C CN B021309000 A CNB021309000 A CN B021309000A CN 02130900 A CN02130900 A CN 02130900A CN 1244816 C CN1244816 C CN 1244816C
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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 present invention relates to a method and a device for measuring a critical current of a high-temperature superconductor band. A superconducting band is wound on a quartz tube in parallel by a compression joint method, and then the quartz tube is fixed to lower parts of four contact heads of a measuring device in which two supporting plates are arranged. Lower parts of the two supporting plates are transversely connected with fixing rods, and upper parts of the two supporting plates are transversely connected with two sliding rods on which sliding blocks are penetrated and connected. Threads longitudinally pass through middle parts of the sliding blocks and are connected with contact rods in which springs are arranged, lower ends of the springs are provided with contact heads with thick upper sections and thin lower sections, and the lower sections of the contact heads extend out of lower ends of the contact rods. Wiring terminals are connected to side faces of the sliding blocks, and lead wires are connected among the wiring terminals and the contact heads of which the lower ends are welded with flexible indium materials. The present invention which is simple in device structure and easy in use has the advantages that a band compression-joint method is adopted, measuring properties and efficiency can be greatly improved; both band loss is reduced, and more information can be measured.
Description
Technical field
The present invention relates to a kind of superconductor high-temperature strip critical current measuring device.
Background technology
At present, high technetium (Tc) material critical current capability is important, an obligato engineering objective of practical superconductor, and its test is just seemed especially important.Be the critical current of measuring long band with the method for welding in the past, the band of solder joint part can not continue to use, so solder joint can only be placed on the two ends of band, measures whole critical current, can't learn the homogeneity of band and defective etc. for information about.
For the measurement of short sample, if adopt the method for traditional welding, can't carry out repeated experiments to same sample, adopt the elargol welding, though can repeated experiments, in the measuring process, the measuring-signal instability, measuring period is long, and mounting process is complexity.Prepare to measure end from sample, need more than 6 hours.
Summary of the invention
The purpose of this invention is to provide a kind of superconductor high-temperature strip critical current measuring device, it adopts the band compression bonding method, and apparatus structure is simple, easy to use, can improve greatly and measure character and efficient.
For achieving the above object, the present invention takes following design proposal:
A kind of superconductor high-temperature strip critical current measuring device, the mode of employing crimping, it comprises the following steps:
(1), with the superconducting tape wound in parallel on quartz ampoule, then quartz ampoule is fixed on the measurement mechanism, with four contact crimping superconducting tape surfaces, replace traditional four lead welding method;
(2), two electric current contacts in the outside are compressed the band that is wrapped on the quartz ampoule, pressure control makes electric current be transferred on the superconducting tape through two electric current contacts within the specific limits;
(3), two current potential contacts with the inboard are pressed on two superconducting tapes between the electric current contact transmission performance of measurement band.
A kind of superconductor high-temperature strip critical current measuring device, it is characterized in that: be provided with two support plates, lower, transverse at two support plates is connected with fixed bar, upper lateral at two support plates is connected with two slide bars, cross-under has slide block on two slide bars, vertically passes the feeler lever that has been threaded at the middle part of slide block, is provided with spring in feeler lever, be provided with the thin contact of the thick hypomere of epimere in the lower end of this spring, the hypomere of this contact stretches out the lower end of feeler lever;
On the side of described slide block, be connected with binding post, between binding post and contact, be connected with lead-in wire.
Described lower end at contact is welded with the phosphide material of soft flexibility.
The bottom is provided with pore in described two support plates, is provided with the adjusting pressing plate in the outer upper of pore, and this pressing plate is provided with two slotted eyes longitudinally, and cross-under has the bolt that is connected with two support plates in slotted eye.
During use, the quartz ampoule that twines superconducting tape is arranged in the pore of support plate, makes band be positioned at the bottom of contact.
Adopt the crimping metering system, not only can reduce the waste of contact portions band, and can realize areal survey, the part is studied.Help improving the homogeneity of band and reduce defective.If adopt the crimping metering system, measuring a sample only needs half a minute, has improved the work efficiency of measuring greatly.So in order to improve homogeneity and the superconductivity that bismuth (Bi) is long band, in order to carry out bismuth (Bi) series superconducting material basic research work in a deep going way, improve the superconduction testing efficiency, adopting crimping superconduction metering system is a kind of effective mode.
Advantage of the present invention is: adopt the band compression bonding method, apparatus structure is simple, easy to use, can improve greatly and measure character and efficient; This measurement mechanism is applied in the middle of the actual measurement of Bi system long band critical current, had both reduced the loss of band, can measure more information (as homogeneity, local defect etc.) again, the performance that improves band is had very important reference role.
Description of drawings
Fig. 1 is a structural representation of the present invention
Fig. 2 is Fig. 1 schematic top plan view
Fig. 3 looks synoptic diagram for Fig. 1 left side
Fig. 4 is that Figure 1A-A is to cross-sectional schematic
Embodiment
Referring to Fig. 1, Fig. 2, Fig. 3, shown in Figure 4: a kind of superconductor high-temperature strip critical current measuring device, be provided with two support plates 1, lower, transverse at two support plates 1 is connected with fixed bar 11, upper lateral at two support plates 1 is connected with two slide bars 6, cross-under has slide block 2 on two slide bars 6, vertically passes the feeler lever 7 that has been threaded at the middle part of slide block 2, is provided with spring 18 in feeler lever 7, be provided with the thin contact 8 of the thick hypomere of epimere in the lower end of this spring 18, the hypomere of this contact 8 stretches out the lower end of feeler lever 7;
On the side of described slide block 2, be connected with binding post 3, between binding post 3 and contact 8, be connected with lead-in wire 10.
Described lower end at contact 8 is welded with the phosphide material 9 of soft flexibility.
The bottom is provided with pore 16 in described two support plates 1, is provided with in the outer upper of pore 16 and regulates pressing plate 12, and this pressing plate 12 is provided with two slotted eyes 13 longitudinally, and cross-under has the bolt 15 that is connected with two support plates 1 in slotted eye 13.
A kind of superconductor high-temperature strip critical current measuring device, it comprises the following steps:
(1), with superconducting tape 14 wound in parallel on quartz ampoule 13, then quartz ampoule 13 is fixed on two support plates 1 of weight-measuring device, with four contacts, 8 crimping superconducting tape surfaces, replace traditional four lead welding method;
(2), two electric current contacts in the outside are compressed the band 14 that is wrapped on the quartz ampoule 13, pressure control makes electric current be transferred on the superconducting tape through two electric current contacts within the specific limits;
(3), two current potential contacts with the inboard are pressed on two superconducting tapes between the electric current contact transmission performance of measurement band.
During use, adopt the mode of crimping, the quartz ampoule 13 that twines superconducting tape 14 is arranged in the pore 15 of two support plates 1, compress quartz ampoule 13 downwards with pressing plate 12, with bolt 14 that pressing plate 12 and two support plates 1 is fixing then, make band 14 be positioned at the bottom of contact 8.In four contacts, two contacts in the outside are positioned on the band at two ends, are used for to the band energising, and two inboard contacts are positioned on the band that needs to detect, and rotate the upper end 4 of feeler lever 7 by hand, make lower end holddown belt material 14 under the effect of spring 17 of contact 7.According to measurement requirement, slide block 2 can horizontally slip on slide bar 6.
Key problem in technology of the present invention be realize the contact in perpendicular translation up and down and do not rotate, can arbitrarily move in strip surface; The contact has certain flexibility, and guaranteeing has enough big contact area in liquid nitrogen temperature and strip surface, reduces contact resistance; And the damage of sample dropped to minimum; The size that is added in the power on the band should be able to show on macroscopic view.
Compression bonding apparatus is demarcated, compression bonding method is tested, to guarantee with the accuracy of crimping measuring method and the infringement lower to properties of sample.
This measurement mechanism is applied in the middle of the actual measurement of Bi system long band critical current.Both reduced the loss of band, can measure more information (as homogeneity, local defect etc.) again, the performance that improves band had been had very important reference role.
Claims (3)
1, a kind of superconductor high-temperature strip critical current measuring device, it is characterized in that: be provided with two support plates (1), lower, transverse at two support plates (1) is connected with fixed bar (11), upper lateral at two support plates (1) is connected with two slide bars (6), go up cross-under at two slide bars (6) slide block (2) is arranged, vertically pass the feeler lever that has been threaded (7) at the middle part of slide block (2), in feeler lever (7), be provided with spring (18), be provided with the thin contact (8) of the thick hypomere of epimere in the lower end of this spring (18), the hypomere of this contact (8) stretches out the lower end of feeler lever (7);
On the side of described slide block (2), be connected with binding post (3), between binding post (3) and contact (8), be connected with lead-in wire (10).
2, superconductor high-temperature strip critical current measuring device according to claim 1 is characterized in that: what described lower end at contact (8) was welded with soft flexibility plugs with molten metal material (9).
3, superconductor high-temperature strip critical current measuring device according to claim 1, it is characterized in that: the interior bottom of described two support plates (1) is provided with pore (16), outer upper at pore (16) is provided with adjusting pressing plate (12), this pressing plate (12) is provided with two slotted eyes (13) longitudinally, and cross-under has the bolt (15) that is connected with two support plates (1) in slotted eye (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021309000A CN1244816C (en) | 2002-10-15 | 2002-10-15 | Superconductor high-temperature strip critical current measurnig method and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021309000A CN1244816C (en) | 2002-10-15 | 2002-10-15 | Superconductor high-temperature strip critical current measurnig method and apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1490628A CN1490628A (en) | 2004-04-21 |
| CN1244816C true CN1244816C (en) | 2006-03-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021309000A Expired - Lifetime CN1244816C (en) | 2002-10-15 | 2002-10-15 | Superconductor high-temperature strip critical current measurnig method and apparatus |
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| Country | Link |
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| CN (1) | CN1244816C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102735964A (en) * | 2012-06-08 | 2012-10-17 | 中国科学院电工研究所 | High-temperature-superconductivity strip material multi-field characteristic measuring device |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101446612B (en) * | 2008-11-25 | 2011-09-14 | 中国电力科学研究院 | Measurement method of critical current properties of high-temperature superconducting tape |
| CN105865919A (en) * | 2016-05-09 | 2016-08-17 | 兰州大学 | Critical current test device for high-temperature superconducting strip under action of lateral compression |
| CN107092000A (en) * | 2017-03-30 | 2017-08-25 | 中国科学院合肥物质科学研究院 | Hyperconductive cable and conductor critical current test device |
| CN107741511B (en) * | 2017-11-24 | 2020-07-24 | 北京鼎臣世纪超导科技有限公司 | Convenient joint for resistance measurement by four-lead method |
| CN107727894A (en) * | 2017-12-11 | 2018-02-23 | 宿迁学院 | A kind of superconductor resistance measurement servicing unit |
| CN108181352B (en) * | 2018-03-12 | 2023-04-25 | 重庆工程职业技术学院 | Superconducting material current testing device |
| 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 |
| CN110275122B (en) * | 2019-04-23 | 2021-07-13 | 上海超导科技股份有限公司 | Superconducting tape critical current testing device and testing method |
| CN112327229A (en) * | 2020-12-02 | 2021-02-05 | 东部超导科技（苏州）有限公司 | Twisting device and method for detecting twisting performance of high-temperature superconducting tape |
-
2002
- 2002-10-15 CN CNB021309000A patent/CN1244816C/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102735964A (en) * | 2012-06-08 | 2012-10-17 | 中国科学院电工研究所 | High-temperature-superconductivity strip material multi-field characteristic measuring device |
| CN102735964B (en) * | 2012-06-08 | 2014-10-15 | 中国科学院电工研究所 | High-temperature-superconductivity strip material multi-field characteristic measuring device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1490628A (en) | 2004-04-21 |
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Effective date of registration: 20190626 Address after: 101407 No. 11 Xingke East Street, Yanqi Economic Development Zone, Huairou District, Beijing Patentee after: YOUYAN ENGINEERING TECHNOLOGY RESEARCH INSTITUTE Co.,Ltd. Address before: 100088, 2, Xinjie street, Beijing Patentee before: General Research Institute for Nonferrous Metals |
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