CN201796076U - Superconductive strand critical current test sample holder - Google Patents
Superconductive strand critical current test sample holder Download PDFInfo
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- CN201796076U CN201796076U CN2010201279194U CN201020127919U CN201796076U CN 201796076 U CN201796076 U CN 201796076U CN 2010201279194 U CN2010201279194 U CN 2010201279194U CN 201020127919 U CN201020127919 U CN 201020127919U CN 201796076 U CN201796076 U CN 201796076U
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- ring
- hold
- down ring
- compression ring
- seal flange
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Abstract
The utility model discloses a superconductive strand critical current test sample holder, which comprises a seal flange, a sample gripping device and the like. Low-temperature epoxy glue is arranged in the seal flange for sealing, an epoxy sheath is sleeved outside the seal flange, and a left support bakelite ring and a right support bakelite ring are respectively disposed in the epoxy sheath. An upper compression ring and a lower compression ring are respectively installed at the upper end and the lower end of a conductive screw rod, the upper compression ring and the conductive screw rod are isolated by a high-tension insulation layer, a sample framework is clamped between the upper compression ring and the lower compression ring, two ends of each of superconductive strands are respectively connected to the upper compression ring and the lower compression ring, and the upper compression ring and the lower compression ring are respectively connected with a current lead. The sample framework is reliable in clamped contact, avoids loosening at low temperature, and reduces contact resistance, condensed water can be avoided on the surface of the sample holder, and consumption of liquid helium is reduced.
Description
Technical field
The utility model relates to superconduction strand critical current field tests, specifically is a kind of Nb
3Sn and NbTi superconduction strand critical current specimen bar.
Background technology
International thermonuclear fusion experimental reactor (ITER) is global at present maximum international cooperative research project, and partner comprises countries such as European Union, the U.S., China, Japan, India, Russia, Korea S.This plan will be researched and solved a nuclear fusion gordian technique difficult problem, and wherein the magnet system of low-temperature superconducting wire coiling is the core component of ITER device.In bearing international thermonuclear fusion experimental reactor (ITER) conductor design, production run, need be to the Nb of ITER TF conductor and the use of PF conductor
3Sn and the critical performance of NbTi superconduction strand are tested.The CIC conductor of ITERTF coil is made up of plating Cr Nb3Sn base composite strands twisting, multicore.ITER mainly contains two kinds with the technology of Nb3Sn base strand: bronze method and Nei Xifa.Two kinds of technology all depends on through assembling and changes and become the initial Nb3Sn of strand.Responseless strand is twisted into cable, and the cable poling becomes pipe inner cable conductor.After be shaped finishing, conductor heat-treat (through reach at the several temperature platform～650 ℃).Need heat-treat according to certain heat treating regime before the performance test of Nb3Sn superconducting line, and according to specific sample skeleton setup test sample.
Critical current sample affix current feed, being placed on the neutralization of liquid helium groove is parallel in the axis magnetic field (solenoid) of specimen holder, selected sample current and magnetic field intensity should guarantee that inside electromagnetic force is applicable to strand, in the strand length range, uniformity of magnetic field must reach 0.5%, angle was necessary for 90 ° ± 6 ° between magnetic field and strand were axial, and the resolution of magnetic field measurement system is better than 20mT, and its absolute accuracy is better than 1%.Magnetic field repeatability must be better than 0.5%, and the resolution of testing current must be better than 0.1A, and absolute accuracy is better than 0.5%, and the CIC conductor of ITER PF coil is made up of plating Ni NbTi base composite strands twisting, multicore.The multicore composite strands is embedded in the high-purity copper body by the Nb-Ti silk is dark.The final stage of strand processing starts from the assembling of final composite blank, is made up of Nb-Ti rod outsourcing Nb layer in the copper base.Blank obtains the strand of final size through multi-pass drawing processing.Drawing should intersect with high-temperature heat treatment to be carried out, to guarantee the generation that α-Ti precipitates and to reach high pin connection power.Sample test skeleton and identical with Nb3Sn superconducting line test skeleton to the requirement of background magnetic field.Proving installation comprises the magnet system that ambient field is provided, specimen holder, low-temperature (low temperature) vessel, power-supply device and data acquisition system (DAS) etc.The magnet that ambient field is provided is a spiral cast superconduction hybrid magnet, and inside and outside coil is respectively by Nb3Sn and NbTi wire-wound system.The aperture is 70mm, and its central magnetic field reaches as high as 16T, the center diameter, highly is uniformity of magnetic field in the cylinder of 10mm up to 2.3 * 10
-4Magnet is in parallel-individual superconducting switch simultaneously, and magnet was in the operation with closed ring pattern when stablized in magnetic field, and was immersed in the liquid helium, and magnet system is more stable during with the assurance experiment.
The utility model content
The purpose of this utility model provides a kind of superconduction strand critical current specimen bar, and it is reliable that the sample skeleton clamps contact, can not become flexible under the low temperature, reduced contact resistance; The surface of specimen holder condensate water can not occur, and saves the use amount of liquid helium.
The technical solution of the utility model is as follows:
Superconduction strand critical current specimen bar includes seal flange, current feed, sample clamp device etc.It is characterized in that: the sealing of low temperature epoxy glue is arranged in the described seal flange, and seal flange is set with the epoxy sheath outward, is respectively arranged with a left side in the epoxy sheath and supports bakelite ring, the right bakelite ring that supports; On the described sample clamp device, the lower end is separately installed with hold-down ring, following hold-down ring, last hold-down ring is connected current feed the two poles of the earth respectively with following hold-down ring, current feed is separated with high-voltage insulation layer between the two poles of the earth, fixing superconduction strand sample skeleton between last hold-down ring and the following hold-down ring, sample skeleton outer wall is wound with the superconduction strand, the two ends of superconduction strand are connected respectively to hold-down ring, on the following hold-down ring, two current feeds pass seal flange respectively successively, the low temperature epoxy glue, the bakelite ring is supported on a left side, the right side is supported the bakelite ring and is fixedlyed connected with conductive lever by piecing devices; Last hold-down ring, following hold-down ring are connected with two current feeds respectively.
Described go up hold-down ring, down the bare terminal end of hold-down ring to have tapering be 45 ° circular conical surface.
Described hold-down ring rear end roof pressure down has the clamping nut that is screwed together on the conductive lever.
Described right the support in the bakelite ring has the helium return port.
Epoxy sheath of the present utility model provides helium circuit, and the cooling current feed has been saved a large amount of liquid heliums; Epoxy sheath supporting construction is easy to drying, makes the time of changing sample shorten greatly, the specimen holder sweating water can not take place, and puts into the phenomenon of freezing behind the liquid helium Dewar; The contact of sample skeleton clamp device is reliable, can not become flexible under the low temperature, and it is simple to operate, reliable to dismantle the sample skeleton simultaneously, can not damage specimen; In order to reduce the contact resistance between the clamping structure, the heating of current feed when reducing to switch on experiment.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
Referring to accompanying drawing, superconduction strand critical current specimen bar includes seal flange 1, conductive lever 12, and low temperature epoxy glue 2 is arranged in the seal flange 1, be set with epoxy sheath 4 outside the seal flange 1, be respectively arranged with a left side in the epoxy sheath 4 and support bakelite ring 3, the right bakelite ring 5 that supports; On the conductive lever 12, the lower end is separately installed with hold-down ring 8, following hold-down ring 10, following hold-down ring 10 rear end roof pressures have screw togather with conductive lever on clamping nut 11, last hold-down ring 8, it is 45 ° circular conical surface that the bare terminal end of following hold-down ring 10 has tapering, be separated with high-voltage insulation layer 7 between last hold-down ring and the conductive lever, following hold-down ring 10 is connected with the conductive lever conducting, be gripped with tubular sample skeleton 9 between last hold-down ring and the following hold-down ring, tubular sample skeleton 9 outer walls are wound with the superconduction strand, and two current feeds 6 pass seal flange 1 respectively successively, low temperature epoxy glue 2, bakelite ring 3 is supported on a left side, the right side is supported bakelite ring 5 and is fixedlyed connected with conductive lever 12 by piecing devices; Be connected with two current feeds 6 respectively outside last hold-down ring 8, the following hold-down ring 10.The right support in the bakelite ring has the helium return port.
Claims (4)
1. superconduction strand critical current specimen bar, include seal flange, current feed, sample clamp device etc., it is characterized in that: the sealing of low temperature epoxy glue is arranged in the described seal flange, seal flange is set with the epoxy sheath outward, is respectively arranged with a left side in the epoxy sheath and supports bakelite ring, the right bakelite ring that supports; On the described sample clamp device, the lower end is separately installed with hold-down ring, following hold-down ring, last hold-down ring is connected current feed the two poles of the earth respectively with following hold-down ring, current feed is separated with high-voltage insulation layer between the two poles of the earth, fixing superconduction strand sample skeleton between last hold-down ring and the following hold-down ring, sample skeleton outer wall is wound with the superconduction strand, the two ends of superconduction strand are connected respectively to hold-down ring, on the following hold-down ring, two current feeds pass seal flange respectively successively, the low temperature epoxy glue, the bakelite ring is supported on a left side, the right side is supported the bakelite ring and is fixedlyed connected with conductive lever by piecing devices; Last hold-down ring, following hold-down ring are connected with two current feeds respectively.
2. superconduction strand critical current specimen bar according to claim 1 is characterized in that: described go up hold-down ring, down the bare terminal end of hold-down ring to have tapering be 45 ° circular conical surface.
3. superconduction strand critical current specimen bar according to claim 1 and 2 is characterized in that: there is the clamping nut that is screwed together on the conductive lever described hold-down ring rear end down.
4. superconduction strand critical current specimen bar according to claim 1 and 2 is characterized in that: described right the support in the bakelite ring has the helium return port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201279194U CN201796076U (en) | 2010-03-10 | 2010-03-10 | Superconductive strand critical current test sample holder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201279194U CN201796076U (en) | 2010-03-10 | 2010-03-10 | Superconductive strand critical current test sample holder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201796076U true CN201796076U (en) | 2011-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201279194U Expired - Fee Related CN201796076U (en) | 2010-03-10 | 2010-03-10 | Superconductive strand critical current test sample holder |
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| CN (1) | CN201796076U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102866298A (en) * | 2012-09-04 | 2013-01-09 | 中国科学院等离子体物理研究所 | Multichannel temperature gradient method RRR testing sample rod |
| CN105004901A (en) * | 2015-06-03 | 2015-10-28 | 中国科学院等离子体物理研究所 | Critical current test sample rod for straight short sample superconducting wire in multi-angle field |
| CN106872733A (en) * | 2017-01-16 | 2017-06-20 | 中国科学院合肥物质科学研究院 | 2kA superconductive strand critical current test sample holders |
| CN108398337A (en) * | 2018-03-12 | 2018-08-14 | 中国科学院合肥物质科学研究院 | A kind of critical performance testing device of Superconducting Strand partial lateral compression strain |
| CN108957040A (en) * | 2018-07-04 | 2018-12-07 | 中国科学院合肥物质科学研究院 | A kind of differently curved radius critical current test sample bar of iron-based superconducting material |
| CN110261694A (en) * | 2019-05-17 | 2019-09-20 | 中国科学院合肥物质科学研究院 | A kind of variable bending criticality energy test sample bar of Superconducting Strand |
| 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 |
-
2010
- 2010-03-10 CN CN2010201279194U patent/CN201796076U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102866298A (en) * | 2012-09-04 | 2013-01-09 | 中国科学院等离子体物理研究所 | Multichannel temperature gradient method RRR testing sample rod |
| CN102866298B (en) * | 2012-09-04 | 2014-11-26 | 中国科学院等离子体物理研究所 | Multichannel temperature gradient method RRR testing sample rod |
| CN105004901A (en) * | 2015-06-03 | 2015-10-28 | 中国科学院等离子体物理研究所 | Critical current test sample rod for straight short sample superconducting wire in multi-angle field |
| CN106872733A (en) * | 2017-01-16 | 2017-06-20 | 中国科学院合肥物质科学研究院 | 2kA superconductive strand critical current test sample holders |
| CN108398337A (en) * | 2018-03-12 | 2018-08-14 | 中国科学院合肥物质科学研究院 | A kind of critical performance testing device of Superconducting Strand partial lateral compression strain |
| CN108957040A (en) * | 2018-07-04 | 2018-12-07 | 中国科学院合肥物质科学研究院 | A kind of differently curved radius critical current test sample bar of iron-based superconducting material |
| 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 |
| CN110261694A (en) * | 2019-05-17 | 2019-09-20 | 中国科学院合肥物质科学研究院 | A kind of variable bending criticality energy test sample bar of Superconducting Strand |
| CN110261694B (en) * | 2019-05-17 | 2021-08-10 | 中国科学院合肥物质科学研究院 | Variable bending critical performance test sample rod for superconducting stranded wire |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110413 Termination date: 20120310 |