CN112327229A - Twisting device and method for detecting twisting performance of high-temperature superconducting tape - Google Patents
Twisting device and method for detecting twisting performance of high-temperature superconducting tape Download PDFInfo
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- CN112327229A CN112327229A CN202011137147.7A CN202011137147A CN112327229A CN 112327229 A CN112327229 A CN 112327229A CN 202011137147 A CN202011137147 A CN 202011137147A CN 112327229 A CN112327229 A CN 112327229A
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- 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
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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
- G01N3/02—Details
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- G—PHYSICS
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- 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
- G01N3/26—Investigating twisting or coiling properties
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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
- G01N2203/0021—Torsional
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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
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- G01N2203/067—Parameter measured for estimating the property
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Abstract
The invention discloses a twisting device for detecting the twisting performance of a high-temperature superconducting tape, which comprises a twisting mechanism and a tape collecting and releasing mechanism; the twisting mechanism comprises a first bracket, a mandrel and a first motor, and a plurality of hoops are further mounted on the mandrel; the belt retracting and releasing mechanism comprises a second base, a belt retracting and releasing bracket and a belt retracting and releasing power assembly; the second base is rotatably provided with at least one lead screw, the tape collecting and releasing support is sleeved on the lead screw, one end of the lead screw is provided with a second motor, the second motor rotates and drives the lead screw to rotate, and the lead screw rotates and drives the tape collecting and releasing support to move; the tape collecting and releasing power assembly comprises a rotating shaft which is rotatably arranged on the tape collecting and releasing support, a tape coiling disc is fixed at one end of the rotating shaft, a third motor used for driving the rotating shaft to rotate is arranged at the other end of the rotating shaft, and a tension controller is further installed on the rotating shaft. The device can test the critical current of the high-temperature superconducting tape in a certain twisting state so as to test the twisting resistance, stability and reliability of the superconducting tape.
Description
Technical Field
The invention relates to the technical field of superconducting cables, in particular to a twisting device and a method for detecting the twisting performance of a high-temperature superconducting tape.
Background
With the continuous and deep research of high-temperature superconducting materials and the continuous improvement of the preparation technology of high-temperature superconducting tapes, the application of the high-temperature superconducting tapes is gradually realized. At present, the high-temperature superconducting tape is mainly used for a superconducting magnet and a superconducting power technology.
The superconducting layer of the high-temperature superconducting material is of a ceramic structure, and is inevitably influenced by continuous strain such as stretching, bending and twisting in the process of preparation, transportation and winding to form a superconducting cable or a superconducting magnet. When the superconducting material is subjected to continuous strain such as stretching, bending and twisting, the crystal structure of the superconducting material changes, thereby causing defects of the superconducting tape. When a superconducting cable or a superconducting magnet works, a current generates certain heat when passing through a defect position, and the dissipated heat cannot be conducted in time to heat a superconducting material, so that the superconductor is converted from a superconducting state to a normal state, and the quench occurs. Research shows that after the superconductor is locally quenched, the normal state at the position can propagate along the current transmission direction, and the propagation speed of the normal state is the quench propagation speed. Compared with a low-temperature superconducting tape, the high-temperature superconducting tape has a lower quench propagation speed, and the slow quench propagation speed leads the tape to be easier to generate heat accumulation after quenching, so that more heat cannot be eliminated through conduction, superconductors are easier to quench, and superconducting devices or superconducting equipment are easier to damage. Therefore, as the application of high-temperature superconducting materials in superconducting magnets and superconducting power is popularized, the requirements on mechanical properties of the superconducting materials such as tensile strength, bending resistance, twisting resistance and the like in the market are higher and higher.
However, no special method in the prior art can realize the twisting test of the high-temperature superconducting tape and test the critical current of the tape after the tape is continuously operated under different twisting states. Therefore, it is necessary to design experiments according to the special working environment of the high-temperature superconducting tape, detect the performance of the high-temperature superconducting tape after the high-temperature superconducting tape continuously works in different twisting states, and verify the application reliability of the superconducting tape, which has important reference value for industrialization of the high-temperature superconducting tape in superconducting magnet and superconducting power technology.
Disclosure of Invention
In view of the disadvantages of the prior art, the present invention provides a twisting apparatus and a method for detecting the twisting performance of a high temperature superconducting tape, which can test the critical current of the high temperature superconducting tape in a certain twisting state, and test the twisting resistance, stability and reliability of the superconducting tape.
In order to achieve the purpose, the invention provides the following technical scheme: the twisting device for detecting the twisting performance of the high-temperature superconducting tape comprises a twisting mechanism and a tape retracting mechanism arranged on one side of the twisting mechanism;
the twisting mechanism comprises a first bracket, a mandrel and a first motor, wherein the mandrel is rotatably arranged on the first bracket, the first motor is used for driving the mandrel to rotate, and a plurality of clamps for fixing the superconducting tapes are further arranged on the mandrel;
the belt winding and unwinding mechanism comprises a second base, a belt winding and unwinding support arranged on the second base and a belt winding and unwinding power assembly arranged on the belt winding and unwinding support;
the second base is rotatably provided with at least one lead screw, the tape retracting and releasing support is sleeved on the lead screw and is in threaded connection with the lead screw, the tape retracting and releasing support is arranged on the second base in a sliding manner in a circumferential limiting and axial non-limiting manner, one end of the lead screw is provided with a second motor, the second motor rotates and drives the lead screw to rotate, and the lead screw rotates and drives the tape retracting and releasing support to move on the second base;
the tape winding and unwinding power assembly comprises a rotating shaft which is rotatably arranged on a tape winding and unwinding support, a tape winding disc is fixed at one end of the rotating shaft, a third motor used for driving the rotating shaft to rotate is arranged at the other end of the rotating shaft, a motor shaft of the third motor is fixedly connected with the rotating shaft, and a tension controller is further installed on the rotating shaft.
The device can be used for testing the critical current of the high-temperature superconducting tape in a certain twisting state so as to test the twisting resistance, stability and reliability of the superconducting tape, has strong applicability, can be used for twisting experiments of various high-temperature superconducting tapes, and has strong operability, low cost and simple and controllable equipment.
Preferably, the twisting mechanism further comprises a first base, a circular arc guide rail is fixed on the first base, a circular arc groove matched with the circular arc guide rail is formed in the bottom of the first support, the circular arc guide rail on the first base is embedded into the circular arc groove on the first support, and the first support can circumferentially rotate along the circular arc guide rail; and the first base is also provided with a locking mechanism for locking the first support on the first base.
Preferably, the locking mechanism comprises a fastener, a threaded hole communicated with the arc-shaped groove is formed in the first base, and the fastener is in threaded connection with the threaded hole; the first support is locked on the first base by rotating the fastener to abut against the arc-shaped guide rail.
Preferably, a plurality of positioning holes matched with the fasteners are formed in the circular arc guide rail at intervals.
Preferably, the winding and unwinding belt support comprises a sliding block sleeved on a lead screw, the sliding block is in threaded connection with the lead screw, a third supporting plate is fixed on the sliding block, and the rotating shaft is rotatably arranged on the third supporting plate.
Preferably, the second base is rotatably provided with two lead screws, the two lead screws are arranged in parallel, and the two lead screws are in threaded connection with the retractable belt support.
Preferably, the mandrel is fixedly connected with a motor shaft of the first motor through a first coupling.
Preferably, the rotating shaft is fixedly connected with a motor shaft of the third motor through a second coupler.
Preferably, the first support comprises a first base plate, a first supporting plate and a second supporting plate, the first supporting plate and the second supporting plate are fixed to the first base plate, one end of the mandrel is rotatably arranged on the first supporting plate, a first semicircular groove is formed in the upper end of the second supporting plate, a locking plate portion is installed at the upper end of the second supporting plate through a fastener, a second semicircular groove is formed in the locking plate portion, the first semicircular groove and the second semicircular groove are matched to form a shaft hole, and the other end of the mandrel is rotatably arranged in the shaft hole.
Preferably, the method for detecting the twisting performance of the high-temperature superconducting tape, which uses the twisting apparatus for detecting the twisting performance of the high-temperature superconducting tape, comprises the following steps:
step 1), taking a section of superconducting tape to be detected, and respectively welding a current leading belt and a voltage leading wire on the superconducting tape;
step 2) measuring the critical current Ic of the superconducting strip in the step 1) in a flat state by using a four-lead method0And recording;
step 3), winding one end of the superconducting strip in the step 1) on a tape reel, and fixing the other end of the superconducting strip on a mandrel with the radius of R through a hoop; adjusting the position of the mandrel and enabling the included angle between the length direction of the superconducting tape and the mandrel to be theta;
step 4), starting a first motor, rotating the first motor and driving the mandrel to rotate, and further winding the superconducting tape along the surface of the mandrel;
step 5), simultaneously, starting a third motor, driving a tape reel to rotate by the third motor and enabling the tape reel to release the superconducting tape, and keeping the tension state of the superconducting tape on the mandrel through a tension controller;
step 6), simultaneously, starting a second motor, rotating the second motor and driving a lead screw to rotate, and rotating the lead screw and driving a sliding block to move so as to drive a retractable belt power assembly to move and keep theta unchanged;
step 7), after winding, fixing the superconducting tape on the mandrel by using another hoop, and keeping the superconducting tape in a twisted state;
step 8) measuring the critical current Ic of the superconducting tape in the twisted state in the step 7) by using a four-lead methodSAnd recording;
step 9), keeping the superconducting tape in the step 8) in a twisted state, soaking the superconducting tape in liquid nitrogen, and testing the critical current Ic of the soaked superconducting tape every 10 daysEiAnd recording;
step 10), circulating step 9) for multiple times or taking down the superconducting tape after the superconducting tape is quenched; and calculating the critical current retention rate according to the tested critical current and drawing a curve to measure the twisting resistance, stability and reliability of the strip material.
In conclusion, the invention has the following beneficial effects:
1. the invention can verify the application reliability of the superconducting tape, detect the performance of the superconducting tape after continuous work, and can be used for detecting the twisting resistance, the stability and the reliability of the superconducting tape;
2. the invention realizes the direct critical current test of the superconducting tape in a certain twisting state;
3. the twisting device has strong applicability and can be used for twisting experiments of various high-temperature superconducting tapes;
4. the twisting device has the advantages of strong operability, low cost, simple and controllable equipment.
5. The twisting device is convenient for replacing the mandrel, so that the critical current of the superconducting tapes under the condition of different radiuses R can be tested;
6. the twisting device provided by the invention is convenient for adjusting the position of the mandrel so as to change the torsion angle theta, and further, the critical current of the superconducting tape in different torsion angle theta states can be tested.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the twisted structure assembly of the present invention mounted on a first base;
FIG. 3 is a schematic view of the twist mechanism of the present invention;
FIG. 4 is a schematic structural view of a belt retracting mechanism of the present invention;
FIG. 5 is an enlarged view taken at A in FIG. 3;
FIG. 6 is a schematic view showing a state where a superconducting tape of the present invention is twisted on a mandrel;
fig. 7 is a graph of the critical current retention rate δ 2 obtained by the test.
Reference numerals: 1. a twisting mechanism; 2. a tape take-up and pay-off mechanism; 3. a first bracket; 4. a mandrel; 5. a first motor; 6. a motor bracket; 7. a superconducting tape; 8. clamping a hoop; 9. a second base; 10. retracting and releasing the belt support; 11. a lead screw; 12. a second motor; 13. a rotating shaft; 14. a take-up reel; 15. a third motor; 16. a tension controller; 17. a first base; 18. a circular arc-shaped guide rail; 19. a slider; 20. a third support plate; 21. a first base plate; 22. a first support plate; 23. a second support plate; 24. a guide block; 25. a circular arc-shaped groove; 26. and a locking plate portion.
Detailed Description
The invention is further described with reference to the accompanying drawings.
The embodiment discloses a twisting device and a detection method for detecting the twisting performance of a high-temperature superconducting tape, and as shown in fig. 1-5, the twisting device comprises a twisting mechanism 1 and a tape retracting mechanism 2 arranged on one side of the twisting mechanism 1; the twisting mechanism 1 comprises a first bracket 3, a mandrel 4 rotatably arranged on the first bracket 3, and a first motor 5 for driving the mandrel 4 to rotate; a first motor 5 is fixed on the first support 3 through a motor support 6, one end of a mandrel 4 is fixedly connected with a motor shaft of the first motor 5 through a first coupler, and a plurality of clamps 8 for fixing superconducting tapes 7 are further arranged on the mandrel 4; the tape retracting mechanism 2 comprises a second base 9, a tape retracting bracket 10 arranged on the second base 9 and a tape retracting power assembly arranged on the tape retracting bracket 10; the second base 9 is rotatably provided with at least one lead screw 11, the lead screw 11 is sleeved with a tape retracting support 10, the tape retracting support 10 is in threaded connection with the lead screw 11, and the tape retracting support 10 is slidably arranged on the second base 9 in a circumferential limiting and axial non-limiting manner, so that the tape retracting support 10 can slide back and forth on the second base 9 without circumferential rotation; a second motor 12 is installed at one end of the screw rod 11, the second motor 12 rotates and drives the screw rod 11 to rotate, and the screw rod 11 rotates and drives the tape retracting support 10 to move on the second base 9; the tape retracting power assembly comprises a rotating shaft 13 rotatably arranged on the tape retracting support 10, a tape winding disc 14 is fixed at one end of the rotating shaft 13, a third motor 15 used for driving the rotating shaft 13 to rotate is arranged at the other end of the rotating shaft 13, a motor shaft of the third motor 15 is fixedly connected with the rotating shaft 13 through a second coupler, and a tension controller 16 is further installed on the rotating shaft 13. The tension controller is an important technology in the winding and unwinding process of various strips, wires and the like such as adhesive tapes, metal foil tapes, wires and cables, and is a common tension controller for the strips in the prior art.
The device can be used for testing the critical current of the high-temperature superconducting tape 7 in a certain twisting state so as to test the twisting resistance, stability and reliability of the superconducting tape 7, has strong applicability, can be used for twisting experiments of various high-temperature superconducting tapes 7, and has strong operability, low cost and simple and controllable equipment.
Preferably, the twisting mechanism 1 further comprises a first base 17, the first base 17 is fixed with a circular arc-shaped guide rail 18, the bottom of the first bracket 3 is provided with a circular arc-shaped groove 25 matched with the circular arc-shaped guide rail 18, the circular arc-shaped groove 25 on the first bracket 3 is embedded in the circular arc-shaped guide rail 18 on the first base 17, the circular arc-shaped guide rail 18 on the first base 17 is embedded in the circular arc-shaped groove 25 on the first bracket 3, and the first bracket 3 can circumferentially rotate along the circular arc-shaped guide rail 18; the first base 17 is further provided with a locking mechanism for locking the first bracket 3 on the first base 17. The first bracket 3 is rotated on the first base 17 by rotating, and the relative position between the first base 17 and the first bracket 3 is locked and kept unchanged by a locking mechanism; therefore, the position of the mandrel 4 is conveniently adjusted to change the torsion angle theta, and the critical current of the superconducting tape 7 in different torsion angle theta states can be tested. The locking mechanism comprises a fastener, a threaded hole communicated with the arc-shaped groove 25 is formed in the first base 17, and the fastener is in threaded connection with the threaded hole; the first bracket 3 can be locked on the first base 17 by rotating the fastener to enable the fastener to be abutted against the circular arc guide rail 18; furthermore, a plurality of positioning holes matched with the fasteners are formed in the circular arc guide rail 18 at intervals, and after the position of the mandrel 4 is adjusted, the fasteners are rotated to be embedded into the positioning holes in the circular arc guide rail 18, so that the relative position between the first base 17 and the first support 3 is locked.
The tape collecting and releasing support 10 is arranged on the second base 9 in a sliding mode in a circumferential limiting mode and an axial non-limiting mode, specifically, when a lead screw 11 is arranged on the second base 9 in a rotating mode, the bottom of the tape collecting and releasing support 10 abuts against the second base 9 and limits the tape collecting and releasing support 10 to rotate, and therefore when the lead screw 11 rotates and drives the tape collecting and releasing support 10 to move, the circumferential rotation of the tape collecting and releasing support 10 is limited due to the acting force of the second base 9; or, rotate on the second base 9 and set up two lead screws 11, two lead screws 11 parallel arrangement each other, and two lead screws 11 all with receive and release belt support 10 threaded connection, so, on the one hand, can avoid receiving and releasing belt support 10 to take place circumferential direction, on the other hand, two lead screws 11 all with receive and release belt support 10 threaded connection, can make the removal of receiving and releasing belt support 10 more steady. In the above technical solution, the tape retracting support 10 includes a slider 19 sleeved on the lead screw 11, the slider 19 is in threaded connection with the lead screw 11, a third support plate 20 is fixed on the slider 19, and the third support plate 20 is rotatably provided with the rotating shaft 13.
In order to facilitate replacement of the mandrels 4 with different radiuses R, the mandrels 4 are rotatably arranged on the first support 3 in a detachable mode, specifically, the first support 3 comprises a first bottom plate 21, a first support plate 22 and a second support plate 23 which are fixed on the first bottom plate 21, a plurality of guide blocks 24 are fixed at the bottom of the first bottom plate 21, the guide blocks 24 are arranged at intervals along the sliding path of the first support 3, and arc-shaped grooves 25 are formed in the guide blocks 24; the one end of dabber 4 is rotated and is set up on first backup pad 22, first semicircular groove has been seted up to the upper end of second backup pad 23, locking plate portion 26 is installed through the fastener in the upper end of second backup pad 23, second semicircular groove has been seted up on locking plate portion 26, first semicircular groove and the semicircular groove of second cooperate and form the shaft hole, the other end of dabber 4 is rotated and is set up in the shaft hole, so, conveniently change dabber 4, and then can test the critical current of superconducting tape 7 under the different radius R condition.
The method for detecting the twisting performance of the high-temperature superconducting tape 7, which uses the twisting device for detecting the twisting performance of the high-temperature superconducting tape 7, comprises the following steps:
step 1), taking a section of superconducting tape 7 to be tested, and welding current leading belts and voltage leading wires with the same width on two ends of the superconducting tape 7 by using soldering flux so as to reduce the contact resistance between an electrode and the tape and avoid burning near the electrode due to overlarge contact resistance in a critical current experiment; the welding spot is required to have no defects such as virtual connection, bubbles and the like;
step 2), welding two voltage poles on the superconducting tape 7 in the step 1) by using soldering flux, wherein the distance between the two voltage poles is L equal to 50cm, and measuring the critical current Ic of the superconducting tape 7 to be measured in a straight state by using a four-lead method0The voltage lead is arranged at the inner side of the current lead and a certain distance is ensured;
step 3), one end of the superconducting tape 7 in the step 1) is wound on a winding reel 14; meanwhile, the other end of the superconducting tape 7 is fixed on a mandrel 4 with the radius of R through a hoop 8 at a position 10cm away from the starting end of the superconducting tape 7, wherein R is more than or equal to 15 mm; adjusting the position of the mandrel 4 and enabling the included angle between the length direction of the superconducting tape 7 and the mandrel 4 to be theta, wherein theta is a torsion angle and is 20-60 degrees;
step 4), starting the first motor 5, wherein the first motor 5 rotates and drives the mandrel 4 to rotate, and then the superconducting tape 7 is wound along the surface of the mandrel 4;
step 5), at the same time, starting the third motor 15, the third motor 15 and the second motor 12, wherein the second motor 12 drives the tape reel 14 to rotate and enable the tape reel to release the superconducting tape 7, and the tension state of the superconducting tape 7 on the mandrel 4 is maintained through the tension controller 16;
step 6), simultaneously, starting the second motor 12, rotating the second motor 12 and driving the screw rod 11 to rotate, rotating the screw rod 11 and driving the sliding block 19 to move, so that the retractable belt power assembly is driven to move to keep theta unchanged;
step 7), after winding is finished, fixing the superconducting tape 7 on the mandrel 4 by using another hoop 8, keeping the superconducting tape 7 in a twisted state, and cutting off the superconducting tape 7 at a position 810cm away from the hoop; the twisted state of the superconducting tape 7 on the mandrel 4, as shown in fig. 6;
step 8), the critical current Ic of the superconducting tape 7 in the twisted state in step 7) is measured by the four-lead methodSAnd recording;
step 9), maintaining the superconducting tape 7 in the step 8) in a twisted state, soaking the superconducting tape in liquid nitrogen, and testing the critical current I of the soaked superconducting tape 7 every 10 daysCEiAnd recording;
step 10), circulating step 9) for 10 times or taking down the superconducting tape 7 after the superconducting tape 7 is quenched; calculating the critical current retention rate δ 1 ═ (Ic)S/Ic0)*100％，δ2＝(IcEi/IcS) 100%, δ 1 is used to verify whether the superconducting tape 7 is damaged after twisting, and δ 2 is plotted against the soaking time; and calculating the critical current retention rate according to the tested critical current and drawing a curve to measure the twisting resistance, stability and reliability of the strip material. (wherein: Ic: critical current; Ic)0: critical current in the initial untwisted state; icS: critical current of initial button-twist state; icE: critical current after soaking in a button-twisted state; icEi: critical current measured every 8 to 12 days after soaking)
When the experiment needs, the mandrel 4 with different radiuses R and the torsion angle theta can be respectively changed, and the steps 3) to 10) are repeated; generally, the radius R and the torsion angle θ should be designed according to the actual application scenario of the superconducting tape 7, and may be appropriately severe in the application scenario. In addition, in the experimental process, the good weldability of the current lead and the voltage lead is ensured, the contact resistance is ensured not to be overlarge, the proper welding temperature is selected to prevent the superconducting tape 7 from being damaged, and the proper soldering flux is selected to ensure the welding firmness of the current lead and the voltage lead in the long-term test.
As shown in FIG. 7, curves a-c show the critical current retention δ 2 of the high-temperature superconducting tape 7 under three different twisting conditions as a function of immersion time, wherein R1 > R2 and θ 1 < θ 2, respectively. As can be seen from curves a and b, the larger the radius R of the twisting mandrel 4, the better the twisting resistance and the better the fatigue resistance of the superconducting tape 7 when the twisting angle θ is constant. As can be seen from curves b and c, when the radius R of the twisting mandrel 4 is constant, the smaller the twisting angle θ, the better the twisting resistance and the better the fatigue resistance of the superconducting tape 7. In the figure, line K shows that when the critical current retention rate delta 2 is smaller than the critical current retention coefficient K, it is judged that the high-temperature superconducting tape 7 has reached the fatigue state under the condition, and the current retention coefficients K of different superconducting tapes 7 are different.
The directions given in the present embodiment are merely for convenience of describing positional relationships between the respective members and the relationship of fitting with each other. The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (10)
1. A twisting device for detecting the twisting performance of a high-temperature superconducting tape is characterized in that: comprises a twisting mechanism (1) and a belt winding and unwinding mechanism (2) arranged on one side of the twisting mechanism (1);
the twisting mechanism (1) comprises a first bracket (3), a mandrel (4) rotatably arranged on the first bracket (3), and a first motor (5) for driving the mandrel (4) to rotate; a plurality of clamps (8) used for fixing the superconducting tape (7) are further arranged on the mandrel (4);
the belt winding and unwinding mechanism (2) comprises a second base (9), a belt winding and unwinding support (10) arranged on the second base (9), and a belt winding and unwinding power assembly arranged on the belt winding and unwinding support (10);
the second base (9) is rotatably provided with at least one lead screw (11), the lead screw (11) is sleeved with the tape retracting and releasing support (10), the tape retracting and releasing support (10) is in threaded connection with the lead screw (11), the tape retracting and releasing support (10) is arranged on the second base (9) in a sliding mode in a circumferential limiting mode and an axial non-limiting mode, one end of the lead screw (11) is provided with a second motor (12), the second motor (12) rotates and drives the lead screw (11) to rotate, and the lead screw (11) rotates and drives the tape retracting and releasing support (10) to move on the second base (9);
receive and release area power pack including rotating pivot (13) that sets up on receiving and releasing area support (10), the one end of pivot (13) is fixed with take-up reel dish (14), the other end of pivot (13) is equipped with and is used for the drive pivot (13) pivoted third motor (15), the motor shaft and pivot (13) fixed connection of third motor (15), just still install tension controller (16) on pivot (13).
2. The twisting apparatus for inspecting the twisting performance of a high temperature superconducting tape as claimed in claim 1, wherein: the twisting mechanism (1) further comprises a first base (17), a circular arc-shaped guide rail (18) is fixed on the first base (17), a circular arc-shaped groove (25) matched with the circular arc-shaped guide rail (18) is formed in the bottom of the first support (3), the circular arc-shaped guide rail (18) on the first base (17) is embedded into the circular arc-shaped groove (25) on the first support (3), and the first support (3) can rotate circumferentially along the circular arc-shaped guide rail (18); the first base (17) is further provided with a locking mechanism for locking the first support (3) on the first base (17).
3. The twisting apparatus for inspecting the twisting performance of a high temperature superconducting tape as claimed in claim 1, wherein: the locking mechanism comprises a fastener, a threaded hole communicated with the arc-shaped groove (25) is formed in the first base (17), and the fastener is in threaded connection with the threaded hole; the first bracket (3) can be locked on the first base (17) by rotating the fastener to enable the fastener to be abutted against the circular arc guide rail (18).
4. The twisting apparatus for inspecting the twisting performance of a high temperature superconducting tape as claimed in claim 3, wherein: and a plurality of positioning holes matched with the fasteners are formed in the circular arc guide rail (18) at intervals.
5. The twisting apparatus for inspecting the twisting performance of a high temperature superconducting tape as claimed in claim 1, wherein: receive and release area support (10) including the cover establish slider (19) on lead screw (11), slider (19) and lead screw (11) threaded connection, just be fixed with third backup pad (20) on slider (19), rotate the setting on third backup pad (20) pivot (13).
6. The twisting apparatus for inspecting the twisting performance of a high temperature superconducting tape as claimed in claim 5, wherein: the second base (9) is provided with two lead screws (11) in a rotating mode, the two lead screws (11) are arranged in parallel, and the two lead screws (11) are connected with the retractable belt support (10) in a threaded mode.
7. The twisting apparatus for inspecting the twisting performance of a high temperature superconducting tape as claimed in claim 1, wherein: the mandrel (4) is fixedly connected with a motor shaft of the first motor (5) through a first coupler.
8. The twisting apparatus for inspecting the twisting performance of a high temperature superconducting tape as claimed in claim 1, wherein: and the rotating shaft (13) is fixedly connected with a motor shaft of a third motor (15) through a second coupler.
9. The twisting apparatus for inspecting the twisting performance of a high temperature superconducting tape as claimed in claim 1, wherein: first support (3) include first bottom plate (21) and fix first backup pad (22) and second backup pad (23) on first bottom plate (21), and the one end of dabber (4) is rotated and is set up on first backup pad (22), first semicircular groove has been seted up to the upper end of second backup pad (23), and locking plate portion (26) are installed through the fastener in the upper end of second backup pad (23), the second semicircular groove has been seted up on locking plate portion (26), and first semicircular groove and second semicircular groove cooperate and form the shaft hole, the other end of dabber (4) is rotated and is set up in the shaft hole.
10. The detection method for detecting the twisting performance of the high-temperature superconducting tape is characterized by comprising the following steps of: the method for detecting the twisting performance of the high-temperature superconducting tape according to any one of claims 1 to 9, comprising the steps of:
step 1), taking a section of superconducting tape (7) to be detected, and respectively welding a current leading tape and a voltage leading wire on the superconducting tape (7);
step 2), measuring the critical current Ic of the superconducting strip (7) in the step 1) in a flat state by using a four-lead method0And recording;
step 3), winding one end of the superconducting strip (7) in the step 1) on a take-up reel (14), and fixing the other end of the superconducting strip (7) on a mandrel (4) with the radius of R through a hoop (8); adjusting the position of the mandrel (4) and enabling the included angle between the length direction of the superconducting tape (7) and the mandrel (4) to be theta;
step 4), starting the first motor (5), wherein the first motor (5) rotates and drives the mandrel (4) to rotate, and then the superconducting tape (7) is wound along the surface of the mandrel (4);
step 5), simultaneously, starting a third motor (15), wherein the third motor (15) drives a tape reel (14) to rotate and enable the tape reel to release the superconducting tape (7), and the tension state of the superconducting tape (7) on the mandrel (4) is maintained through a tension controller (16);
step 6), simultaneously, starting a second motor (12), rotating the second motor (12) and driving a lead screw (11) to rotate, rotating the lead screw (11) and driving a sliding block (19) to move, so that a retractable belt power assembly is driven to move to keep theta unchanged;
step 7), after winding is finished, fixing the superconducting tape (7) on the mandrel (4) by using another hoop (8) and keeping the superconducting tape in a twisted state;
step 8), the critical current Ic of the superconducting tape (7) in the twisted state in the step 7) is measured by a four-lead methodSAnd recording;
step 9), keeping the superconducting tape (7) in the step 8) in a twisted state, soaking the superconducting tape in liquid nitrogen, and testing the critical current Ic of the soaked superconducting tape (7) every 10 daysEiAnd recording;
step 10), circulating step 9) for a plurality of times or taking down the superconducting tape (7) after the superconducting tape (7) quenches; and calculating the critical current retention rate according to the tested critical current and drawing a curve.
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| CN202011137147.7A CN112327229A (en) | 2020-12-02 | 2020-12-02 | Twisting device and method for detecting twisting performance of high-temperature superconducting tape |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113252449A (en) * | 2021-04-14 | 2021-08-13 | 杭州电子科技大学 | Wire-welding type DB connector soldering tin joint failure testing method and device |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1490628A (en) * | 2002-10-15 | 2004-04-21 | 北京有色金属研究总院 | Superconductor high-temperature strip critical current measurnig method and apparatus |
| CN2643454Y (en) * | 2003-07-10 | 2004-09-22 | 北京云电英纳超导电缆有限公司 | Coiling apparatus for superconducting cable band |
| CN103569786A (en) * | 2013-10-09 | 2014-02-12 | 东莞市庆丰电工机械有限公司 | Horizontal automatic tension taping machine |
| JP2016011173A (en) * | 2014-06-27 | 2016-01-21 | 住友電気工業株式会社 | Tape tension control method and production method of tape winding wire |
| CN106546838A (en) * | 2016-09-22 | 2017-03-29 | 西南交通大学 | A kind of measurement apparatus and its method of critical current properties of high-temperature superconducting tape |
| 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 |
| CN108254610A (en) * | 2018-01-15 | 2018-07-06 | 中国科学院合肥物质科学研究院 | For measuring test device of the high-temperature superconductor band in twisting states lower critical electric current |
| CN109367072A (en) * | 2018-10-08 | 2019-02-22 | 南京航空航天大学 | A kind of multidirectional prepreg tape preparation facilities and preparation method thereof |
| CN110118681A (en) * | 2019-05-13 | 2019-08-13 | 安徽理工大学 | It is a kind of for producing the device and method of different sizes and dip of joint rock sample |
| CN111537927A (en) * | 2020-06-28 | 2020-08-14 | 合肥工业大学 | Device and method for testing critical current of high-temperature superconducting strip in spiral winding state |
-
2020
- 2020-12-02 CN CN202011137147.7A patent/CN112327229A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1490628A (en) * | 2002-10-15 | 2004-04-21 | 北京有色金属研究总院 | Superconductor high-temperature strip critical current measurnig method and apparatus |
| CN2643454Y (en) * | 2003-07-10 | 2004-09-22 | 北京云电英纳超导电缆有限公司 | Coiling apparatus for superconducting cable band |
| CN103569786A (en) * | 2013-10-09 | 2014-02-12 | 东莞市庆丰电工机械有限公司 | Horizontal automatic tension taping machine |
| JP2016011173A (en) * | 2014-06-27 | 2016-01-21 | 住友電気工業株式会社 | Tape tension control method and production method of tape winding wire |
| CN106546838A (en) * | 2016-09-22 | 2017-03-29 | 西南交通大学 | A kind of measurement apparatus and its method of critical current properties of high-temperature superconducting tape |
| 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 |
| CN108254610A (en) * | 2018-01-15 | 2018-07-06 | 中国科学院合肥物质科学研究院 | For measuring test device of the high-temperature superconductor band in twisting states lower critical electric current |
| CN109367072A (en) * | 2018-10-08 | 2019-02-22 | 南京航空航天大学 | A kind of multidirectional prepreg tape preparation facilities and preparation method thereof |
| CN110118681A (en) * | 2019-05-13 | 2019-08-13 | 安徽理工大学 | It is a kind of for producing the device and method of different sizes and dip of joint rock sample |
| CN111537927A (en) * | 2020-06-28 | 2020-08-14 | 合肥工业大学 | Device and method for testing critical current of high-temperature superconducting strip in spiral winding state |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113252449A (en) * | 2021-04-14 | 2021-08-13 | 杭州电子科技大学 | Wire-welding type DB connector soldering tin joint failure testing method and device |
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