CN106371043B - Superconducting tape test device - Google Patents
Superconducting tape test device Download PDFInfo
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- CN106371043B CN106371043B CN201610673749.1A CN201610673749A CN106371043B CN 106371043 B CN106371043 B CN 106371043B CN 201610673749 A CN201610673749 A CN 201610673749A CN 106371043 B CN106371043 B CN 106371043B
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- superconducting tape
- clamping body
- superconducting
- screw rod
- test device
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/12—Measuring magnetic properties of articles or specimens of solids or fluids
- G01R33/1238—Measuring superconductive properties
- G01R33/1246—Measuring critical current
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/007—Environmental aspects, e.g. temperature variations, radiation, stray fields
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- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Toxicology (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention provides a kind of superconducting tape test devices, including testboard and Dewar tank, wherein testboard includes: pedestal again, and extension section, the extension section includes more the first screw rods being erected on pedestal and the slide plate with the cooperation of the first screw flight；Fixed part, the fixed part include the lower clamping body being set on the base and the upper clamping body that is rotatably arranged on slide plate；Torsional part, the torsional part include the turntable being mounted on above upper clamping body by more upright bars, and turntable is able to drive clamping body rotation, the liquid nitrogen for superconducting tape to be cooled to superconducting state is filled in Dewar tank.Superconducting tape test device of the invention is integrated with function that is fixed, stretching, reverse band, can complete the critical current test stretched, under torsion combined stress, and stretch and adjust with can be convenient with distorting stress.Therefore, the measuring device testing efficiency is high.
Description
Technical field
The present invention relates to superconducting cable technical fields, specifically, being related to a kind of superconducting tape test device.
Background technique
With the development of superconductor technology, superconductor has been gradually applied to the fields such as electric power, medicine.It is existing more both at home and abroad
Hyperconductive cable hanging net operation, high resolution have been used for physical examination using the MRI (magnetic resonance imaging) that superconducting magnet manufactures.
It can be said that superconducting tape is superconductor application form the most main.
Superconducting tape in use, the power such as inevitably will be stretched and reverse, when such as hyperconductive cable manufacture,
Superconducting tape at a certain angle with pitch is regular is stranded on supporter, while the work by axial tension and twisted power
With.
Superconductor is generally ceramic material, and property is brittle and fragile, once superconducting ceramics are destroyed, critical current
Or diamagnetism necessarily declines, and has an impact to the performance of product.Therefore, superconducting tape is before for technique manufacture, it is necessary to right
Its stretch-proof and resistance to twisting property are tested.
The prior art, as provided a kind of high-temperature superconductor band Mechanics Performance Testing in patent of invention 201510316163.5
Device and its detection method propose a kind of test superconducting tape bending radius and tensile stress testing jig, but are unable to test superconduction
Critical current situation of change of the band under twisting states.It is super that a kind of high temperature is proposed in utility model 200420009983.7
Conduction band material testing jig, the testing jig also cannot achieve the test of critical current of the superconducting tape under twisting states.
Summary of the invention
The present invention provides a kind of superconducting tape test devices, bear tensile stress, distorting stress to test superconducting tape
Under conditions of critical current.
According to an aspect of the invention, there is provided a kind of superconducting tape test device, including testboard and Dewar tank,
In, testboard includes: pedestal again；Extension section, the extension section include more the first screw rods being erected on pedestal and with
The slide plate of one screw flight cooperation；Fixed part, the fixed part include the lower clamping body being set on the base and rotationally
Upper clamping body on slide plate is set；Torsional part, the torsional part include being mounted on above upper clamping body by more upright bars
Turntable, the interior liquid nitrogen filled with for superconducting tape to be cooled to superconducting state of Dewar tank.
Particularly, wherein the material of the upper clamping body and lower clamping body is red copper.
Particularly, wherein the Dewar tank is located at the lower section of testboard, and Dewar tank is gone up and down by the second screw rod.
Particularly, wherein there is scale on the excircle of turntable.
Particularly, wherein extension section also has tension sensor.
Particularly, wherein first screw rod, the second screw rod are driven by a motor rotation.
According to another aspect of the present invention, a kind of superconducting tape test method is provided, above-described superconductive tape is used
Material test device carries out following steps: the both ends of clamping body and the fixed superconducting tape of lower clamping body in use, slide plate is along the first spiral shell
Bar moves up, and applies pretension appropriate, it is ensured that band is in a vertical state；Extracted current lead and voltage lead；Apply
Tensile stress: slide plate is moved up along the first screw rod, measures value of thrust by tension sensor, is reached setting value of thrust tail skid and is stopped
Only；Apply distorting stress: the rotation of torsional part automatic or manual stops after reaching set angle；Tensile stress and/or torsion are applied
After stress, Dewar tank is moved upward to designated position along the second screw rod, and superconducting tape is cooled to critical-temperature hereinafter, reaching super
Lead state；Current source is powered to superconducting tape through current feed, is tested.
Detailed description of the invention
By the way that embodiment is described in conjunction with following accompanying drawings, features described above of the invention and technological merit will become
More understands and be readily appreciated that.
Fig. 1 is the stereoscopic schematic diagram one for indicating the superconducting tape test device of the embodiment of the present invention；
Fig. 2 is the stereoscopic schematic diagram two for indicating the superconducting tape test device of the embodiment of the present invention；
Fig. 3 is the front view for indicating the superconducting tape test device of the embodiment of the present invention；
Fig. 4 is the side view for indicating the superconducting tape test device of the embodiment of the present invention；
Fig. 5 is the flow chart for indicating the superconducting tape test method of the embodiment of the present invention.
Specific embodiment
The embodiment of superconducting tape test device of the present invention described below with reference to the accompanying drawings.This field it is common
Technical staff will recognize, without departing from the spirit and scope of the present invention, can with a variety of different modes or
A combination thereof is modified described embodiment.Therefore, attached drawing and description are regarded as illustrative in nature, rather than for limiting
Scope of protection of the claims processed.In addition, in the present specification, attached drawing is drawn not in scale, and identical appended drawing reference table
Show identical part.
The invention discloses a kind of superconducting tape test devices, as shown in Figure 1, including the testboard being placed in cabinet 30
10 and Dewar tank 20, testboard 10 be fixed on the top of cabinet 30, for fixing, stretching, reversing superconducting tape, and Dewar tank 20
It positioned at the lower section in testboard 10, can move up and down, liquid nitrogen is filled in Dewar tank 20, it is cold for being carried out to superconducting tape
But, critical-temperature is allowed to cool to hereinafter, reaching superconducting state.Fig. 2 is the stereoscopic schematic diagram two of superconducting tape test device, is aobvious
Show conveniently, eliminates cabinet 30.As shown in Fig. 2, testboard 10 is again including pedestal 101 and the stretching being mounted on pedestal 101
Portion, torsional part, fixed part.Pedestal 101 is used to support each component of installation, and pedestal 101 is triangle, and extension section includes more settings
The first screw rod 104 on pedestal 101 and the slide plate 108 being threadedly engaged with the first screw rod 104, specifically, being in pedestal
On 101 three angles, it is respectively arranged with the first screw rod 104 of three settings, there are three threaded hole, slide plates for tool on slide plate 108
It is connected horizontally on screw rod by threaded hole.First screw rod 104 is connected with motor (not shown) respectively, and motor can be set
In pedestal 101.Motor drives screw rod 104 to rotate, so that slide plate 108 moves up and down along the first screw rod 104.And fixed part includes setting
The upper clamping body 103 setting the lower clamping body 102 on pedestal 101 and being rotatably arranged on slide plate 108.The lower end of band
It is fixed on lower clamping body 102, the upper end of band is fixed on clamping body 103, can be by various ways such as bolts by band
Material is fixed on clamping body up and down, so that band vertically tenses.Upper clamping body 103 is mounted on slide plate 108 for example, by bearing
On.Upper clamping body and lower clamping body are made of the material conducting electricity very well, such as red copper.
Superconduction belt material critical current test needs that a current feed is respectively welded at the both ends of superconducting tape, while super
On conduction band material weld two voltage leads, the superconducting tape is placed in liquid helium or liquid nitrogen environment, current feed it is another
Current source outside end connection liquid helium or liquid nitrogen environment, current source apply continually changing electricity to superconducting tape by current feed
Stream, and the other end of voltage lead is connected with the voltage test device outside liquid helium or liquid nitrogen environment, is filled by the voltage tester
It sets and measures voltage value, record the voltage value, and record obtains the current value for flowing through superconducting tape when voltage value accordingly simultaneously,
Voltage value and current value are transferred to computer and carry out data processing, obtains the critical current of superconducting tape.Therefore, from lower clamping
Test current feed 1021 can be drawn on body 102 to connect with current source, the extracted current lead on upper clamping body 103
1031, then, on superconducting tape in selection measurement point weldingvoltage lead, test, electric current is from current source through current feed
1021 are transmitted on lower clamping body 102, then are transmitted on superconducting tape 105 by lower clamping body 102, through 1031 shape of current feed
At circuit.It is connected to voltage test device from voltage lead, is measured.
After the upper and lower side of band is fixed, control motor drives the rotation of the first screw rod 104, and slide plate 108 can be along the first spiral shell
Bar 104 moves up and down, and slide plate 108 moves up, with regard to upward puller strap material.Particularly, pulling force biography is also equipped on testboard
Sensor, for detecting pulling force suffered by superconducting tape, so that accurately control superconducting tape tests pulling force.
Torsional part includes the turntable 107 that upper 103 top of clamping body is mounted on by more upright bars.On upper clamping body 103,
There are three upright bars 109 to be fixedly connected with upper clamping body 103, the top of upright bar 109 is fixedly connected with turntable 107, the axis of turntable 107
Superconducting tape clamped by line and upper clamping body, lower clamping body is on the same line.The top of turntable 107 is provided with knob
1071, that is to say, that turntable 107 can rotate manually, it is of course also possible to use motor driven turntable 107.The rotation of turntable 107
It is transferred to upper clamping body 103 through three upright bars 109, clamping body 103 also correspondingly rotates in drive, and superconducting tape 105 is upper
End is fixed on clamping body 103, and lower end is fixed on lower clamping body 102, and therefore, superconducting tape twists with turntable 107.
In the case where superconducting tape bears preset pulling force, torque, it is powered to superconducting tape, superconduction belt material critical current can be carried out
Test.
Superconducting tape test device of the invention be integrated with it is fixed, stretch, the function of torsion band, can complete to stretch,
The critical current test under combined stress is reversed, and stretches and is adjusted with can be convenient with distorting stress.
In addition, having scale on the excircle of turntable 107, there is arrow, on knob 1071 convenient for control band
Material windup-degree.But, if using windup-degree is manually adjusted, then windup-degree can only be controlled, is unable to control the torsion of application
Square.Windup-degree can be passed through due to formula T (torque)=P (power) ÷ Ω (angular speed) by adjusting windup-degree using motor
The torque of application is controlled, test result is more accurate.It is of course also possible to which torsion sensor is arranged to control the torsion of application
Square.
Dewar tank 20 includes the container 203 using upper opening made of low temperature material, and is wherein filled with liquid nitrogen.?
The side of container 203 is provided with the second screw rod 201 of setting, and container 203 is mounted on the second screw rod 201 by connector 202,
And the horizontal movement of container 203 is limited by sliding rail 204.Connector 202 has and the internal screw thread of the second screw rod cooperation, and second
Screw rod is connected with motor, is rotated by the second screw rod of motor driven, and container 203 can move up and down.Band applied stretching,
After reversing iso-stress, control container 203 is moved to band test zone, is immersed in superconducting tape in liquid nitrogen, is cooled to stagnation temperature
Degree is hereinafter, reach superconducting state.
The test device further includes control unit, control unit and each motor, sensor and current source, voltage tester dress
Setting etc. has circuit connection, to the start and stop device, controls the tensile stress value and torque value of application, and the electricity of the variation applied
Flow valuve etc.
According to another aspect of the present invention, a kind of superconducting tape test method is provided, above-described superconductive tape is utilized
Material test device, follows the steps below:
Step S102 clamps the lower end of superconducting tape using lower clamping body, clamps the upper of superconducting tape using upper clamping body
End starts motor and drives the rotation of the first screw rod 104 so that slide plate moves up, and be mounted on the upper clamping body 3 on slide plate then to
Upper tension superconducting tape, applies pretension appropriate upwards, it is ensured that band is in plumbness.
Step S104, extracted current lead and voltage lead, specifically, being the extracted current lead on lower clamping body
1021, the extracted current lead 1031 on upper clamping body.In superconducting tape surface appropriate location weldingvoltage lead, voltage lead
It is connected with external voltage test device.
Step S106 applies tensile stress: setting value of thrust, and after starter, slide plate is automatically moved up, and is passed by pulling force
Sensor measures value of thrust, reaches setting value of thrust tail skid and stops.
And/or step S108, apply distorting stress: setting windup-degree, after starter, the rotation of torsional part automatic or manual
Turn, stops after reaching set angle.
Step S1010, Dewar tank is automatically moved up along the second screw rod, after being moved to designated position, carries out liquid nitrogen filling,
Liquid nitrogen is by the cooling superconducting tape of superconducting tape to critical-temperature hereinafter, reaching superconducting state；
Step S1012 applies continually changing electric current to superconducting tape by current feed.It is filled by the voltage tester
It sets and measures voltage value, record the voltage value, and record obtains the current value for flowing through superconducting tape when voltage value accordingly simultaneously,
Voltage value and current value are transferred to computer and carry out data processing, obtains the critical current of surveyed superconducting tape.
Using superconducting tape test device of the invention, following 4 kinds of measurement schemes can be at least completed:
(1) superconducting tape only tension stress when critical current situation of change, to judge that the critical stretching of superconducting tape is answered
Become；
(2) drawing force is certain, critical current situation of change when superconducting tape reverses different angle；
(3) windup-degree is certain, the critical current situation of change of superconducting tape when superconducting tape is by different stretch power；
(4) when windup-degree and drawing force change simultaneously, the critical current situation of change of superconducting tape.
Superconducting tape test device of the invention is integrated with function that is fixed, stretching, reverse band, can individually complete to draw
Stretch or distorting stress under critical current test, can also complete stretch, torsion combined stress under critical current test, and
It stretches and distorting stress is adjusted in which can be convenient, the test of suitable for various size superconducting tape, and testing efficiency is high, in device
On be provided with sensor, can accurately detect the stress of application, guarantee test accuracy.
The above description is only a preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (5)
1. a kind of superconducting tape test device, including testboard and Dewar tank, wherein testboard includes: again
Pedestal；
Extension section, the extension section include more the first screw rods being erected on pedestal and the cunning with the cooperation of the first screw flight
Plate；
Fixed part, the fixed part include the lower clamping body being set on the base and the upper folder that is rotatably arranged on slide plate
Tight body；
Torsional part, the torsional part include the turntable being mounted on above upper clamping body by more upright bars, the axis of turntable with it is upper
Superconducting tape clamped by clamping body, lower clamping body on the same line, is rotated using turntable described in manual or motor driven,
The liquid nitrogen for superconducting tape to be cooled to superconducting state is filled in Dewar tank,
Wherein, the Dewar tank is located at the lower section of testboard, and Dewar tank is gone up and down by the second screw rod,
Wherein, first screw rod, the second screw rod are driven by a motor rotation.
2. superconducting tape test device according to claim 1, wherein the material of the upper clamping body and lower clamping body is
Red copper.
3. superconducting tape test device according to claim 1, wherein have scale on the excircle of turntable.
4. superconducting tape test device according to claim 1, wherein extension section also has tension sensor.
5. a kind of superconducting tape test method carries out following steps using superconducting tape test device as claimed in claim 4:
Using the both ends of upper clamping body and the fixed superconducting tape of lower clamping body, slide plate is moved up along the first screw rod, and it is appropriate to apply
Pretension, it is ensured that band is in a vertical state；
Extracted current lead and voltage lead；
Apply tensile stress: slide plate is moved up along the first screw rod, is measured value of thrust by tension sensor, is reached setting value of thrust
Tail skid stops；
Apply distorting stress: the rotation of torsional part automatic or manual stops after reaching set angle；
After having applied tensile stress and/or distorting stress, Dewar tank is moved upward to designated position along the second screw rod, by superconducting tape
Critical-temperature is cooled to hereinafter, reaching superconducting state；
Current source is powered to superconducting tape through current feed, is tested.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610673749.1A CN106371043B (en) | 2016-08-15 | 2016-08-15 | Superconducting tape test device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610673749.1A CN106371043B (en) | 2016-08-15 | 2016-08-15 | Superconducting tape test device |
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| CN106371043A CN106371043A (en) | 2017-02-01 |
| CN106371043B true CN106371043B (en) | 2019-03-26 |
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