CN110261694A - A kind of variable bending criticality energy test sample bar of Superconducting Strand - Google Patents
A kind of variable bending criticality energy test sample bar of Superconducting Strand Download PDFInfo
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- CN110261694A CN110261694A CN201910414724.3A CN201910414724A CN110261694A CN 110261694 A CN110261694 A CN 110261694A CN 201910414724 A CN201910414724 A CN 201910414724A CN 110261694 A CN110261694 A CN 110261694A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/20—Investigating strength properties of solid materials by application of mechanical stress by applying steady bending forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/003—Environmental or reliability tests
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/58—Testing of lines, cables or conductors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0023—Bending
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0222—Temperature
- G01N2203/0228—Low temperature; Cooling means
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Abstract
The present invention discloses a kind of variable bending criticality energy test sample bar of Superconducting Strand, including variable bending test module, bakelite support ring, epoxy sleeve, signal line jack, upper drive rod, two current feeds and steel flange, one end of epoxy sleeve is equipped with steel flange, the other end is equipped with bakelite support ring, signal line jack is fixed on steel flange, current feed lower end and upper drive rod lower end pass through bakelite support ring, epoxy sleeve is stretched out in current feed upper end and upper drive rod upper end, the lower end of current feed is connected with the copper strips of flexible test module, upper drive rod is connect with the underdrive bar in crooked test module, crooked test module passes through sunpender and epoxy sleeve connection.The variable bending novel in structural design of the present invention, is able to achieve the critical performance test of Superconducting Strand under differently curved radius, and operation is simple when replacing sample.
Description
Technical field
The present invention relates to the critical performance testing fields of Superconducting Strand, face more particularly to a kind of variable bending of Superconducting Strand
Criticality energy test sample bar.
Background technique
One of the dream energy of mankind when fusion energy resource, Superconducting tokamak magnetic trapped fusion apparatus are to realize fusion energy
The reliable apparatus of power generation, superconducting magnet are the key that full superconduction controllable nuclear fusion heaps.Hyperconductive cable is the important set of superconducting magnet
At component, technology is one of key technology of SUPERCONDUCTING MAGNET DESIGN.Hyperconductive cable is formed by more Superconducting Strand stranded cables, therefore
Research for superconducting line is important process therein.
Currently, two kinds of low temperature superconducting materials of Nb3Sn and NbTi are maturely applied in fusion facility magnet, also big
It is used widely in type accelerator superconducting magnet and superconduction nmr magnet.New high temperature superconducting materia is also gradually developing
In the process.
In process hyperconductive cable and in cable operation, Superconducting Strand bending strain different conditions can all occur, mistake
Big dependent variable will affect the superconductivity of strand, and with the increase of superconducting magnet electromagnetic force, this bending deformation also can
It is all the more serious, in the design of hyperconductive cable, production and magnet design process require that Superconducting Strand is avoided to occur bending and deformation,
And Superconducting Strand is with the basis that the critical performance of bending deformation is that hyperconductive cable designs and manufactures.Therefore, it is necessary to Superconducting Strand
Bending strain under criticality can be carried out test.
For this purpose, devising a set of critical performance test sample bar for being used to test under Superconducting Strand bending deformation, can be used for
The critical performance test of bending of the superconductions circle strand such as Nb3Sn, NbTi, MgB2 and Bi2212, the device can be realized difference
Critical performance test under bending radius.
In the variable bending criticality energy test experiments of Superconducting Strand, measured using four leads methods of standard.
In the variable bending criticality energy test experiments of Superconducting Strand, test sample equipotential line distance is 50mm.
Experiment content specifically includes that facing under differently curved radius and different magnetic field, under liquid helium temperature or liquid nitrogen temperature
Boundary's electric current and the test of n value.
Test sample, which is immersed in liquid helium or liquid nitrogen, carries out energization experiment, needs to apply to test sample in test process
Bending stress needs to design a set of reliable test device, and fixed test sample simultaneously applies different bending stresses, and is carrying on the back
DC current, test sample critical current and n value are passed through to sample in scape magnetic field.
Currently, each superconducting experiment room devises the critical performance testing device of a variety of Superconducting Strands bendings, structure in the world
Different, in order to the bending critical performance safe and accurate, functions reliably and efficiently for measuring Superconducting Strand, specimen holder must when designing
It must consider the following:
1. test sample can be stably fixed in test device;
2. contacting good, electric current transmission stabilization under low temperature environment, between test sample and current feed;
3. bending stress load is reliable;
4. test sample is easily changed;
5. specimen holder current feed is easy to cooling to save cryogenic liquid;
It should keep good with the external world when experiment 6. specimen holder is powered to be electrically insulated.
Summary of the invention
The object of the invention is exactly that it is variable to provide a kind of Superconducting Strand in order to fill up the domestic technological gap in the field at present
The critical performance test sample bar of bending strain.
To achieve the above object, the technical scheme adopted by the invention is as follows:
A kind of variable bending criticality energy test sample bar of superconducting line, it is characterised in that: including variable bending test module, bakelite
Support ring, epoxy sleeve, signal line jack, upper drive rod, two current feeds and steel flange;
The variable bending test module includes sunpender, underdrive bar, skeleton fixture block, upper bed-plate, briquetting, worm screw, bottom
Seat, turbine, cursor, sample skeleton, outlet terminal and copper strips;
One end of the epoxy sleeve is equipped with steel flange, the other end is equipped with bakelite support ring, and signal line jack is fixed
On steel flange, current feed lower end and upper drive rod lower end pass through bakelite support ring, current feed upper end and upper transmission
Epoxy sleeve is stretched out in bar upper end, and the lower end of current feed is connected with the copper strips of flexible test module, upper drive rod and bending
Underdrive bar connection in test module, crooked test module pass through sunpender and epoxy sleeve connection;
Turbine, worm screw and the briquetting is fixed on lower bottom base, and the upper bed-plate is fixed on briquetting, and the turbine is worn
It crosses upper bed-plate and is connect with cursor, the sample skeleton is linked together by skeleton fixture block with cursor, and described goes out
Line terminals are fixed on skeleton fixture block, and the outlet terminal is connect by copper strips with current feed, and the underdrive bar is worn
It crosses upper bed-plate to connect with worm-drive, turbine and worm screw are cooperatively connected, and the sunpender lifts entire crooked test module.
The variable bending criticality energy test sample bar of a kind of superconducting line, it is characterised in that: the upper drive rod
Upper end connects precision electric motor.
The variable bending criticality energy test sample bar of a kind of superconducting line, it is characterised in that: the sample skeleton is adopted
It is made with material of Ti-6Al-4V material.
The variable bending criticality energy test sample bar of a kind of superconducting line, it is characterised in that: in the sample skeleton
Portion is equipped with one for placing the groove of Superconducting Strand sample, and the both ends of sample skeleton are rounding corner structure, Superconducting Strand sample
Both ends are drawn out to outlet terminal from sample skeleton both ends rounding angular position.
The variable bending criticality energy test sample bar of a kind of superconducting line, it is characterised in that: the current feed
Material is high purity copper, using hollow cylindrical structure.
The beneficial effects of the present invention are:
The present invention plays very big effect in Superconducting Strand bending strain lower critical performance test, and bending module can be realized not
With the critical performance test under bending radius, sample skeleton is easy to disassemble, and operation is simple when replacing sample;Between upper and lower pedestal
Turbine and worm be design for disassembly, be conveniently replaceable;Epoxy tube-in-tube structure is easily dried, and reduces sample replacing construction, no
Specimen holder sweating water can occur and be put into icing phenomenon after liquid helium Dewar.
The invention has the advantages that
The present invention is suitable for the critical performance test of Superconducting Strand under differently curved radius, and bending modular structure is novel in design,
The country there is no similar structures at present, and operation is simple when replacing sample.
Detailed description of the invention
Fig. 1 is schematic diagram of the three-dimensional structure.
Fig. 2 is present invention bending modular structure schematic diagram.
Fig. 3 is present invention bending module sample skeleton schematic diagram.
Fig. 4 is present invention bending module lower bottom base top view.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.Technical scheme in the embodiment of the invention is clearly and completely described, shows
So, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the reality in the present invention
Example is applied, every other embodiment obtained by those of ordinary skill in the art without making creative efforts all belongs to
In the scope of protection of the invention.
As shown in Figs 1-4, the variable bending criticality energy test sample bar of a kind of superconducting line, it is characterised in that: including variable
Crooked test modules A 1, bakelite support ring A2, epoxy sleeve A3, signal line jack A4, upper drive rod A5, two current feed A6
With steel flange A7;
The variable bending test module include sunpender B1, underdrive bar B2, skeleton fixture block B3, upper bed-plate B4, briquetting B5,
Worm screw B6, lower bottom base B7, turbine B8, cursor B9, sample skeleton B10, outlet terminal B11 and copper strips B12;
One end of the epoxy sleeve A3 is equipped with steel flange A7, the other end is equipped with bakelite support ring A2, and signal wire is inserted
Hole A4 is fixed on steel flange A7, and the lower end current feed A6 and the lower end upper drive rod A5 pass through bakelite support ring A2, electric current
Epoxy sleeve A3 is stretched out in the upper end lead A6 and the upper end upper drive rod A5, and the lower end of current feed A6 is with flexible test module A1's
Copper strips B12 is connected, and upper drive rod A6 is connect with the underdrive bar B2 in crooked test modules A 1, and crooked test modules A 1 passes through
Sunpender B1 is connect with epoxy sleeve A3;
Turbine B8, worm screw B6 and the briquetting B5 is fixed on lower bottom base B7, and the upper bed-plate B4 is fixed on briquetting B5,
The turbine B8 passes through upper bed-plate B4 and connect with cursor B9, and the sample skeleton B10 is by skeleton fixture block B3 and turns
Swing arm B9 links together, and the outlet terminal B11 is fixed on skeleton fixture block B3, and the outlet terminal B11 passes through copper
Band B12 is connect with current feed A6, and the underdrive bar B2 passes through upper bed-plate B4 and worm screw B6 and is sequentially connected, turbine B8 and snail
Bar B6 is cooperatively connected, and the sunpender B1 lifts entire crooked test modules A 1.
The upper end upper drive rod A5 connects precision electric motor, and lower end connects underdrive bar B2, passes through upper drive rod in experimentation
A6 and underdrive bar B2 drives worm screw B6 and turbine B8 rotation, and cursor B9 is followed by rotation when worm gear B8, worm screw B6 are rotated,
It is realized with skeleton fixture block B3 and cursor B9 is connected with sample skeleton B10, sample skeleton B10 when drive rod A6 is rotated in realization
It is followed by rotation, to realize sample bent at different radii;Sample skeleton B10 uses material to be made of Ti-6Al-4V material,
Reduce the influence due to different heat expansion coefficient to test result, is equipped with a groove, sample skeleton in the middle part of sample skeleton B10
The both ends of B10 are rounding corner structure;As shown in figure 3, Superconducting Strand sample is placed in groove when experiment, sample both ends are from sample
The both ends product skeleton B10 rounding angular position is drawn out to outlet terminal B11;Current feed A6, material are high purity copper, outer for connecting
Power supply provides power supply for laboratory sample, and current feed A6 uses hollow cylindrical structure, reduces leakage heat;Briquetting B5 is used to support worm screw
B6, and realize and be fixed together lower bottom base B7 and upper bed-plate B4.
The above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to preferred embodiment to this hair
It is bright to be described in detail, those skilled in the art should understand that, it can modify to technical solution of the present invention
Or equivalent replacement should all cover without departing from the objective and range of technical solution of the present invention in claim of the invention
In range.Technology not described in detail in the present invention, shape, construction portion are well-known technique.
Claims (5)
1. a kind of variable bending criticality energy test sample bar of superconducting line, it is characterised in that: including variable bending test module, glue
The wooden support ring, epoxy sleeve, signal line jack, upper drive rod, two current feeds and steel flange;
The variable bending test module includes sunpender, underdrive bar, skeleton fixture block, upper bed-plate, briquetting, worm screw, bottom
Seat, turbine, cursor, sample skeleton, outlet terminal and copper strips;
One end of the epoxy sleeve is equipped with steel flange, the other end is equipped with bakelite support ring, and signal line jack is fixed
On steel flange, current feed lower end and upper drive rod lower end pass through bakelite support ring, current feed upper end and upper transmission
Epoxy sleeve is stretched out in bar upper end, and the lower end of current feed is connected with the copper strips of flexible test module, upper drive rod and bending
Underdrive bar connection in test module, crooked test module pass through sunpender and epoxy sleeve connection;
Turbine, worm screw and the briquetting is fixed on lower bottom base, and the upper bed-plate is fixed on briquetting, and the turbine is worn
It crosses upper bed-plate and is connect with cursor, the sample skeleton is linked together by skeleton fixture block with cursor, and described goes out
Line terminals are fixed on skeleton fixture block, and the outlet terminal is connect by copper strips with current feed, and the underdrive bar is worn
It crosses upper bed-plate to connect with worm-drive, turbine and worm screw are cooperatively connected, and the sunpender lifts entire crooked test module.
2. a kind of variable bending criticality energy test sample bar of superconducting line according to claim 1, it is characterised in that: described
The upper end of upper drive rod connects precision electric motor.
3. a kind of variable bending criticality energy test sample bar of superconducting line according to claim 1, it is characterised in that: described
Sample skeleton uses material to be made of Ti-6Al-4V material.
4. a kind of variable bending criticality energy test sample bar of superconducting line according to claim 3, it is characterised in that: described
One is equipped in the middle part of sample skeleton for placing the groove of Superconducting Strand sample, the both ends of sample skeleton are rounding corner structure, are surpassed
It leads strand sample both ends and is drawn out to outlet terminal from sample skeleton both ends rounding angular position.
5. a kind of variable bending criticality energy test sample bar of superconducting line according to claim 1, it is characterised in that: described
The material of current feed is high purity copper, using hollow cylindrical structure.
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN112542269A (en) * | 2020-11-30 | 2021-03-23 | 中国科学院合肥物质科学研究院 | Preparation method of tensile strain critical current test sample of niobium-tin superconducting wire |
CN114167182A (en) * | 2021-12-06 | 2022-03-11 | 中国科学院合肥物质科学研究院 | Device for testing circulating bending and current-carrying characteristics of high-temperature superconducting strip in liquid helium temperature region |
CN114994448A (en) * | 2022-07-12 | 2022-09-02 | 核工业西南物理研究院 | Continuous testing device for bending performance of high-temperature superconducting strand |
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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 |
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CN114167182B (en) * | 2021-12-06 | 2023-08-18 | 中国科学院合肥物质科学研究院 | Device for testing cyclic bending and current-carrying characteristics of liquid helium temperature zone of superconducting strip |
CN114994448A (en) * | 2022-07-12 | 2022-09-02 | 核工业西南物理研究院 | Continuous testing device for bending performance of high-temperature superconducting strand |
CN114994448B (en) * | 2022-07-12 | 2024-06-04 | 核工业西南物理研究院 | High-temperature superconducting strand bending performance continuous testing device |
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