CN102359905A - Multi-point testing system for dynamic surface magnetic field and thermal distribution of superconductor - Google Patents
Multi-point testing system for dynamic surface magnetic field and thermal distribution of superconductor Download PDFInfo
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- CN102359905A CN102359905A CN2011102899738A CN201110289973A CN102359905A CN 102359905 A CN102359905 A CN 102359905A CN 2011102899738 A CN2011102899738 A CN 2011102899738A CN 201110289973 A CN201110289973 A CN 201110289973A CN 102359905 A CN102359905 A CN 102359905A
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Abstract
The invention discloses a multi-point testing system for the dynamic surface magnetic field and thermal distribution of a superconductor, which comprises a bracket consisting of a horizontally-arranged copper support plate and a vertically-arranged copper support bar; a vibration exciter, an aluminum tray and a superconductor testing device are sequentially arranged on the copper support plate in a bottom-top mode; and a height-adjustable aluminium beam, a permanent magnet hung on the aluminum beam and a permanent magnet fixed bolt for fixing the permanent magnet on the aluminium beam are horizontally arranged on the copper support bar. By using the multi-point testing system for the dynamic surface magnetic field and thermal distribution of a superconductor disclosed by the invention, the defects in the prior art that a deformation measuring sensor is poor in adaptability, poor in validity of measured data, poor in measurement accuracy, low in detection precision and the like can be overcome, thereby achieving the advantages that a deformation measuring sensor is good in adaptability, good in validity of measured data, good in measurement accuracy and high in detection precision.
Description
Technical field
The present invention relates to superconductor performance test technology, particularly, relate to the multi-point sampler system of a kind of superconductor dynamic surface magnetic field and heat distribution.
Background technology
Superconducting phenomenon is not strange to us, and the landmark each time breakthrough in superconductor field all can attract almost all people's sight, all because its unique physical property and tempting application prospect.In fact, Superconductor Physics and material scholar respectively with regard to Superconductor Physics mechanism, how to improve the superconduction critical parameters and seek new superconductor etc. and be close to a century for it separately.The low temperature superconducting material of development and application be accompanied by to(for) the research of superconductor and structural mechanics problem are opened, and the superconductor operate as normal needs utmost point low temperature environment (low-temperature superconducting 4.2K, liquid helium cooler environment; High-temperature superconductor-77K, cooled with liquid nitrogen environment), mechanical characteristic such as Young modulus, the thermal conductivity of superconductor under this low temperature environment, fracture toughnesses etc. and for the dependence rule in temperature, magnetic field are the basic mechanical problems of superconductor and structural mechanics.
At present; Domestic superconducting experiment mainly concentrates on the suspending power measurement aspect of high-temperature superconductor suspension system; (domesticly almost do not carry out in that the experiment aspect the superconductor malformation test is also very limited in the world; Become keeping in check of the domestic ITER of development correlative study), its main difficulty be the pick-up unit in the finite space under the low temperature environment install with utmost point low temperature and strong magnetic field circumstance under deformation measurement sensor adaptability; And almost also do not have the good test experience ways and means of precision in superconductor quench magnetic heat distribution rule and effective context of detection.
In realizing process of the present invention, the inventor finds, exist at least in the prior art deformation measurement sensor bad adaptability, measurement data validity poor, measure defectives such as poor accuracy and accuracy of detection are low.
Summary of the invention
The objective of the invention is to,, propose the multi-point sampler system of a kind of superconductor dynamic surface magnetic field and heat distribution, to realize that deformation measurement sensor adaptability is good, measurement data validity is good, to measure accuracy good and the high advantage of accuracy of detection to the problems referred to above.
For realizing above-mentioned purpose, the technical scheme that the present invention adopts is: the multi-point sampler system of a kind of superconductor dynamic surface magnetic field and heat distribution comprises the support of being made up of horizontally disposed copper back up pad and the copper support bar that vertically is provided with; On said copper back up pad, bottom-up vibrator, aluminum pallet and the superconductor proving installation of being provided with successively; On said copper support bar, be horizontally disposed with adjustable for height aluminium beam, be suspended on the permanent magnet on the said aluminium beam, and be used for said permanent magnet is fixed on the permanent magnet set bolt on the aluminium beam.
Further, said superconductor proving installation comprises polystyrene foam container and the vibration-testing sensor that is arranged on the aluminum pallet; Inside at said polystyrene foam container is loaded with liquid nitrogen, in liquid nitrogen, is placed with high-temperature superconductor and is equipped with said high-temperature superconductor and is used for the superconductor gripper that the low-temperature test assembly is connected with the superconductor seamless surface; Add at the top of polystyrene foam container and to be stamped the epoxy resin cover plate.
Further; Said superconductor gripper is fixedly pasted the bottom at the polystyrene foam container with low temperature glue; Comprise upward " recessed " type skeleton and following " recessed " type skeleton that are symmetrical set up and down and have recessed cavity, and be arranged on the said low-temperature test assembly of going up between " recessed " type skeleton and following " recessed " type skeleton.
Further, said " recessed " type skeleton and " recessed " type skeleton down gone up is and is used to make the partly exposed grid structure with the adjustment position of superconductor.
Further; Said " recessed " type skeleton of going up is oppositely arranged with the recess of " recessed " type skeleton down and has an internal thread, and said low-temperature test assembly comprises copper pipe, be encapsulated in low temperature hall probe and temperature sensor in the said copper pipe, be placed on down the superconductor in the internal cavities of " recessed " type skeleton and be attached to the lip-deep low temperature foil gauge of said superconductor; Match with the internal thread of said last " recessed " type skeleton and following " recessed " type skeleton, be provided with external thread in the periphery of said copper pipe.
Further, said low temperature hall probe comprises the probe bearing, and a plurality of probe points that are provided with according to the number of test point; Corresponding with each probe point, be provided with the probe wire surplus and the lead fastener that stretch out copper pipe; Corresponding probe wire surplus is connected on the top board of " recessed " type skeleton away from recess through corresponding lead fastener.
Further, said superconductor is the superconduction piece of right cylinder or positive hexa-prism.
The superconductor dynamic surface magnetic field of various embodiments of the present invention and the multi-point sampler system of heat distribution are owing to comprise the support of being made up of horizontally disposed copper back up pad and the copper support bar that vertically is provided with; On copper back up pad, bottom-up vibrator, aluminum pallet and the superconductor proving installation of being provided with successively; On copper support bar, be horizontally disposed with adjustable for height aluminium beam, be suspended on the permanent magnet on the aluminium beam, and be used for said permanent magnet is fixed on the permanent magnet set bolt on the aluminium beam; Can measure the experiment test platform of the mechanical deformation of superconductor under dynamic case, Distribution of Magnetic Field, heat conduction rule etc., solve the basic key issue of the experimental measurement method of characterisitic parameter such as superconductor electromagnetism and mechanics under extreme environment; Can disclose the dependence rule of its physical characteristics parameter of superconductor through the means of experiment, for the application of superconductor provides effective and reliable master data to utmost point low temperature and magnetic field environment; Thereby can overcome deformation measurement sensor bad adaptability in the prior art, measurement data validity poor, measure poor accuracy and the low defective of accuracy of detection, with realize that deformation measurement sensor adaptability is good, measurement data validity is good, measurement accuracy good and the high advantage of accuracy of detection.
Other features and advantages of the present invention will be set forth in instructions subsequently, and, partly from instructions, become obvious, perhaps understand through embodiment of the present invention.The object of the invention can be realized through the structure that in the instructions of being write, claims and accompanying drawing, is particularly pointed out and obtained with other advantages.
Through accompanying drawing and embodiment, technical scheme of the present invention is done further detailed description below.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of instructions, is used to explain the present invention with embodiments of the invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the structural representation of the multi-point sampler system of superconductor dynamic surface magnetic field and heat distribution according to the present invention;
Fig. 2 is the assembly structure synoptic diagram of cryogenic probe in the multi-point sampler system of superconductor dynamic surface magnetic field and heat distribution according to the present invention, superconductor and anchor clamps;
Fig. 2 a is the structural representation of vertical view of cryogenic probe and probe bearing among Fig. 2;
Fig. 2 b and Fig. 2 c are the cross sectional representation of superconductor among Fig. 2.
In conjunction with accompanying drawing, Reference numeral is following in the embodiment of the invention:
The copper support bar of 1-; 2-aluminium beam; The 3-permanent magnet; 4-permanent magnet set bolt; 5-epoxy resin cover plate; 6-polystyrene foam container; The 7-liquid nitrogen; 8-superconductor gripper; The 9-high-temperature superconductor; 10-vibration-testing sensor; 11-aluminum pallet; The 12-vibrator; 13-lead fastener; 14-probe wire surplus; The 15-internal thread; The 16-external thread; 17-low temperature Hall (hall) probe and temperature sensor; 18-superconduction piece; 19-low temperature foil gauge.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for explanation and explains the present invention, and be not used in qualification the present invention.
According to the embodiment of the invention, the multi-point sampler system of a kind of superconductor dynamic surface magnetic field and heat distribution is provided.Shown in Fig. 1-Fig. 2 c, present embodiment comprises the support of being made up of horizontally disposed copper back up pad and the copper support bar 1 that vertically is provided with; On copper back up pad, bottom-up vibrator 12, the aluminum pallet 11 and superconductor proving installation of being provided with successively; On copper support bar 1, be horizontally disposed with adjustable for height aluminium beam 2, be suspended on the permanent magnet 3 on the aluminium beam 2, and be used for permanent magnet 3 is fixed on the permanent magnet set bolt 4 on the aluminium beam 2.
In the above-described embodiments, the superconductor proving installation comprises the polystyrene foam container 6 and vibration-testing sensor 10 that is arranged on the aluminum pallet 11; Be loaded with liquid nitrogen 7 (77K) in the inside of polystyrene foam container 6, in liquid nitrogen 7, be placed with high-temperature superconductor 9 and be equipped with high-temperature superconductor 9 and be used for the superconductor gripper 8 that the low-temperature test assembly is connected with the superconductor seamless surface; Add at the top of polystyrene foam container 6 and to be stamped epoxy resin cover plate 5.
In the above-described embodiments; Superconductor gripper 8 usefulness low temperature glue are fixedly pasted the bottom at polystyrene foam container 6; Comprise upward " recessed " type skeleton and following " recessed " type skeleton that are symmetrical set up and down and have recessed cavity, and be arranged on the low-temperature test assembly between " recessed " type skeleton and following " recessed " type skeleton.Wherein, go up " recessed " type skeleton and " recessed " type skeleton down, be and be used to make the partly exposed grid structure of superconductor with the adjustment position.Here, the material that goes up " recessed " type skeleton and following " recessed " type skeleton can adopt aluminium or copper.
In the above-described embodiments; Going up " recessed " type skeleton is oppositely arranged with the recess of " recessed " type skeleton down and has an internal thread 15; The low-temperature test assembly comprises copper pipe (directly for 2mm), be encapsulated in low temperature Hall (hall) probe (Applicable temperature 77K-400K is of a size of diameter 2mm) and temperature sensor (precision 0.1K) in the copper pipe, be placed on down the superconductor in the internal cavities of " recessed " type skeleton and be attached to the lip-deep low temperature foil gauge 19 of superconductor; Match with the internal thread 15 of last " recessed " type skeleton and following " recessed " type skeleton, be provided with external thread 16 in the periphery of copper pipe.Here, superconductor is the superconduction piece 18 of right cylinder or positive hexa-prism.
In the above-described embodiments, the low temperature hall probe comprises the probe bearing, and a plurality of probe points that are provided with according to the number of test point; Corresponding with each probe point, be provided with the probe wire surplus 14 and lead fastener 13 of stretching out copper pipe, and on the top board of last " recessed " type skeleton, be provided with chuck away from recess; Corresponding probe wire surplus 14 is connected to the chuck place of " recessed " type skeleton through corresponding lead fastener 13, and the material of chuck is aluminium or copper.
During concrete operations; In the superconductor gripper 8 that superconductor is positioned over; Low temperature hall probe and temperature sensor 17 (temperature sensor places one with low temperature hall probe) with some measuring magnetic field intensity; Be attached to the bottom of polystyrene foam container 6 with the low temperature gluing with superconductor gripper 8 is whole then, be fixed together with polystyrene foam container 6; The polystyrene foam container 6 that will test is fixed on the aluminum pallet 11 of vibrator 12, and on aluminum pallet 11, places the Dynamic Signal of vibration-testing sensor 10; After fixing polystyrene foam container 6 and vibrator 12; Liquid nitrogen 7 is poured in the polystyrene foam container 6; And cover the opening of polystyrene foam container 6 with epoxy resin cover plate 5, on aluminium beam 2, lay permanent magnet 3, with permanent magnet set bolt 4 fixed permanent magnets 3; Experimental requirement simultaneously can increase or reduce the height of aluminium beam 2, thereby reaches experimental requirements and purpose.
Must be noted that there is different characteristic when static in superconductor when dynamic, i.e. magnetic heat distribution rule has very big difference, and the magnetic heat on superconductor surface has different character, measures for difference, and this just seems particularly important.Simultaneously; Domestic at present, foreign technology; Its structure of the superconductor of being produced all is smaller, and its diameter is about 30mm, highly is about right cylinder or six prisms of 20mm, for this reason; The size of superconductor gripper 8 of the foregoing description and the low temperature hall probe that adopts is very little all; And superconductor gripper 8 can realize the stationkeeping of the vibration-testing sensor 10 of maximum 25 points according to the size of institute's test sample article, can comparatively comprehensively test superconductor superconductor surface magnetic, heat distribution rule under dynamic case and carry out multi-point sampler.
For the mechanics deform in same pace of superconductor, be employed in the superconductor cylinder and paste low temperature foil gauge 19 (Applicable temperature 4-400K), the mechanical deformation characteristic of test superconductor, thereby the synchronism detection of realization mechanical deformation and magnetic, hot characteristic quantity.
Wherein, contact with low temperature hall probe and the seamless of temperature sensor 17 in order to make the superconductor surface, the foregoing description has designed superconductor gripper 8; Wherein fixedly the skeleton of superconductor is a reticulate texture, only need play the fixedly effect of superconductor and the seamless link of probe bearing, and its position inside skeleton of convenient adjustment.The probe bearing adopts alumina based material, and its diameter is 2mm, and structure is a honeycomb; Can low temperature hall probe and temperature sensor 17 be inserted in the hole, contact with the superconductor cross section is seamless, again through last " recessed " type skeleton; Fix low temperature hall probe and temperature sensor 17 lead in addition, in order to avoid in vibration, produce swing, and influence experiment test; And let lead can not receive tension force, lead is produced destroy; Thereby whole superconductor gripper 8 can make low temperature hall probe and the temperature sensor 17 of superconductor and test in one, guarantees the accuracy and the precision of dynamic experimental test.
The superconductor dynamic surface magnetic field of the foregoing description and the multi-point sampler system of heat distribution; Be initiative; Help setting up a cover reliable, accurately, the experiment test platform of the mechanical deformation of the high measurement superconductor of automaticity under dynamic case, Distribution of Magnetic Field, heat conduction rule etc.; Solution is under extreme environment; The basic key issue of the experimental measurement method of characterisitic parameters such as superconductor electromagnetism and mechanics can disclose the dependence rule of its physical characteristics parameter of superconductor to utmost point low temperature and magnetic field environment through the means of experiment; For the application of superconductor provides effectively, master data reliably, for further development and application is laid a good foundation; The multi-point sampler system of this superconductor dynamic surface magnetic field and heat distribution is applicable under the extreme environment, superconductor under dynamic case, the experiment measuring system of characterisitic parameters such as electromagnetism and mechanics; Can realize not applying the association test between superconductor magnetic field, temperature field and the stress field under the impressed current situation, fill up effective detection of superconduction quench magnetic heat distribution rule.
In sum, the superconductor dynamic surface magnetic field of various embodiments of the present invention and the multi-point sampler system of heat distribution are owing to comprise the support of being made up of horizontally disposed copper back up pad and the copper support bar that vertically is provided with; On copper back up pad, bottom-up vibrator, aluminum pallet and the superconductor proving installation of being provided with successively; On copper support bar, be horizontally disposed with adjustable for height aluminium beam, be suspended on the permanent magnet on the aluminium beam, and be used for said permanent magnet is fixed on the permanent magnet set bolt on the aluminium beam; Can measure the experiment test platform of the mechanical deformation of superconductor under dynamic case, Distribution of Magnetic Field, heat conduction rule etc., solve the basic key issue of the experimental measurement method of characterisitic parameter such as superconductor electromagnetism and mechanics under extreme environment; Can disclose the dependence rule of its physical characteristics parameter of superconductor through the means of experiment, for the application of superconductor provides effective and reliable master data to utmost point low temperature and magnetic field environment; Thereby can overcome deformation measurement sensor bad adaptability in the prior art, measurement data validity poor, measure poor accuracy and the low defective of accuracy of detection, with realize that deformation measurement sensor adaptability is good, measurement data validity is good, measurement accuracy good and the high advantage of accuracy of detection.
What should explain at last is: the above is merely the preferred embodiments of the present invention; Be not limited to the present invention; Although the present invention has been carried out detailed explanation with reference to previous embodiment; For a person skilled in the art, it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. the multi-point sampler system of superconductor dynamic surface magnetic field and heat distribution is characterized in that, comprises the support of being made up of horizontally disposed copper back up pad and the copper support bar that vertically is provided with; On said copper back up pad, bottom-up vibrator, aluminum pallet and the superconductor proving installation of being provided with successively; On said copper support bar, be horizontally disposed with adjustable for height aluminium beam, be suspended on the permanent magnet on the said aluminium beam, and be used for said permanent magnet is fixed on the permanent magnet set bolt on the aluminium beam.
2. the multi-point sampler system of superconductor dynamic surface magnetic field according to claim 1 and heat distribution is characterized in that, said superconductor proving installation comprises polystyrene foam container and the vibration-testing sensor that is arranged on the aluminum pallet; Inside at said polystyrene foam container is loaded with liquid nitrogen, in liquid nitrogen, is placed with high-temperature superconductor and is equipped with said high-temperature superconductor and is used for the superconductor gripper that the low-temperature test assembly is connected with the superconductor seamless surface; Add at the top of polystyrene foam container and to be stamped the epoxy resin cover plate.
3. the multi-point sampler system of superconductor dynamic surface magnetic field according to claim 2 and heat distribution; It is characterized in that; Said superconductor gripper is fixedly pasted the bottom at the polystyrene foam container with low temperature glue; Comprise upward " recessed " type skeleton and following " recessed " type skeleton that are symmetrical set up and down and have recessed cavity, and be arranged on the said low-temperature test assembly of going up between " recessed " type skeleton and following " recessed " type skeleton.
4. the multi-point sampler system of superconductor dynamic surface magnetic field according to claim 3 and heat distribution is characterized in that, said " recessed " type skeleton and " recessed " type skeleton down gone up is and is used to make the partly exposed grid structure with the adjustment position of superconductor.
5. the multi-point sampler system of superconductor dynamic surface magnetic field according to claim 4 and heat distribution; It is characterized in that; Said " recessed " type skeleton of going up is oppositely arranged with the recess of " recessed " type skeleton down and has an internal thread, and said low-temperature test assembly comprises copper pipe, be encapsulated in low temperature hall probe and temperature sensor in the said copper pipe, be placed on down the superconductor in the internal cavities of " recessed " type skeleton and be attached to the lip-deep low temperature foil gauge of said superconductor; Match with the internal thread of said last " recessed " type skeleton and following " recessed " type skeleton, be provided with external thread in the periphery of said copper pipe.
6. the multi-point sampler system of superconductor dynamic surface magnetic field according to claim 5 and heat distribution is characterized in that, said low temperature hall probe comprises the probe bearing, and a plurality of probe points that are provided with according to the number of test point; Corresponding with each probe point, be provided with the probe wire surplus and the lead fastener that stretch out copper pipe; Corresponding probe wire surplus is connected on the top board of " recessed " type skeleton away from recess through corresponding lead fastener.
7. the multi-point sampler system of superconductor dynamic surface magnetic field according to claim 5 and heat distribution is characterized in that, said superconductor is the superconduction piece of right cylinder or positive hexa-prism.
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| CN201110289973.8A CN102359905B (en) | 2011-09-28 | 2011-09-28 | Multi-point testing system for dynamic surface magnetic field and thermal distribution of superconductor |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102706378A (en) * | 2012-04-28 | 2012-10-03 | 深圳光启创新技术有限公司 | Metamaterial testing fixture device |
| CN105301461A (en) * | 2015-11-27 | 2016-02-03 | 云南电网有限责任公司电力科学研究院 | Test device for insulation performance of wrapped superconductor and test method thereof |
| CN107144720A (en) * | 2017-05-11 | 2017-09-08 | 西南交通大学 | High-temperature superconductor band critical current test device and its method of testing under cyclic loading |
| CN107505493A (en) * | 2016-11-04 | 2017-12-22 | 洛阳理工学院 | A kind of controllable superconduction belt material critical current measuring device of tension force |
| CN111175677A (en) * | 2020-01-13 | 2020-05-19 | 合肥工业大学 | Dynamic superconducting magnetic force tester and testing method for simulating vibration working condition |
| CN112556870A (en) * | 2020-12-02 | 2021-03-26 | 云南电网有限责任公司电力科学研究院 | Method and system for measuring dynamic temperature of superconducting strip |
| CN113495238A (en) * | 2020-04-07 | 2021-10-12 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | Dynamic superconducting magnet thermal load test system with background magnetic field |
| CN113495237A (en) * | 2020-04-07 | 2021-10-12 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | Dynamic superconducting magnet thermal load testing method with background magnetic field |
| CN113495236A (en) * | 2020-04-07 | 2021-10-12 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | Superconducting magnet vibration test system with background magnetic field |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102706378A (en) * | 2012-04-28 | 2012-10-03 | 深圳光启创新技术有限公司 | Metamaterial testing fixture device |
| CN102706378B (en) * | 2012-04-28 | 2015-05-27 | 深圳光启高等理工研究院 | Metamaterial testing fixture device |
| CN105301461A (en) * | 2015-11-27 | 2016-02-03 | 云南电网有限责任公司电力科学研究院 | Test device for insulation performance of wrapped superconductor and test method thereof |
| CN107505493A (en) * | 2016-11-04 | 2017-12-22 | 洛阳理工学院 | A kind of controllable superconduction belt material critical current measuring device of tension force |
| CN107505493B (en) * | 2016-11-04 | 2023-09-26 | 洛阳理工学院 | Tension-controllable superconducting strip critical current measuring device |
| CN107144720A (en) * | 2017-05-11 | 2017-09-08 | 西南交通大学 | High-temperature superconductor band critical current test device and its method of testing under cyclic loading |
| CN111175677A (en) * | 2020-01-13 | 2020-05-19 | 合肥工业大学 | Dynamic superconducting magnetic force tester and testing method for simulating vibration working condition |
| CN113495238A (en) * | 2020-04-07 | 2021-10-12 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | Dynamic superconducting magnet thermal load test system with background magnetic field |
| CN113495237A (en) * | 2020-04-07 | 2021-10-12 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | Dynamic superconducting magnet thermal load testing method with background magnetic field |
| CN113495236A (en) * | 2020-04-07 | 2021-10-12 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | Superconducting magnet vibration test system with background magnetic field |
| CN113495236B (en) * | 2020-04-07 | 2024-06-11 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | Superconducting magnet vibration test system with background magnetic field |
| CN112556870A (en) * | 2020-12-02 | 2021-03-26 | 云南电网有限责任公司电力科学研究院 | Method and system for measuring dynamic temperature of superconducting strip |
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