Testing device and testing method for superconducting tape

Abstract

The invention discloses a testing device and a testing method for a superconducting tape. The testing device for the superconducting tape comprises a fixed supporting module, a movable supporting module, a straight rod and a tape fixing module, wherein the movable supporting module and the fixed supporting module are in sliding connection in the vertical direction; the straight rod is rotationally connected with the movable supporting module; the strip fixing module is fixedly connected with the straight rod and used for hanging the superconducting strip. The winding angle of the straight rod is adjusted by adjusting the relative position between the movable supporting module and the fixed supporting module, the superconducting tape is wound on the straight rod, and the influence of the diameter of the straight rod and the inclination angle of the straight rod on the current-carrying performance of the superconducting tape can be tested at low cost; and the superconducting tape evaluation and CORC superconducting cable winding process exploration and research efficiency is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of superconducting cable processing, and particularly relates to a testing device and a testing method for superconducting tapes. Background Art

[0002] Generally, the currents required for operation of general large superconducting magnets such as magnets for thermonuclear fusion reactors, large particle accelerator magnets, etc. far exceed the current-carrying capacity of a single superconducting tape. Therefore, superconducting tapes need to be wound into different types of cables and magnet coils. The characteristics of round core superconducting (CORC) cables, such as high current-carrying capacity, low AC loss, and bendability, make CORC superconducting cables have great development prospects. Although with the significant improvement of the production process of superconducting tapes in recent years, their mechanical and electrical properties have been rapidly improved, the performance of the superconducting layer is still relatively sensitive to mechanical strain. When the superconducting tape is axially stretched or axially compressed, its critical current will decrease. Until when the positive tensile strain exceeds a constant strain value, the critical current of the superconducting tape cannot recover to the initial state after unloading. This positive tensile strain value is called the irreversible strain, while the negative compressive strain can be completely recovered after unloading even if it exceeds -1%.

[0003] During the winding process of CORC superconducting cables, there are complex processes such as stretching, compression, torsion, and saddle surface reverse bending deformation. Specifically, it is also affected by factors such as the winding core diameter, winding angle, and winding tensile stress. These will all affect the current-carrying performance of the tape. At present, the work on the structural design parameters of CORC cables is all carried out by directly winding physical cables, and then testing the influence of the winding process and different winding parameters on the performance of superconducting tapes in experiments. Although the existing test results provide direct and valuable feedback for optimizing and improving the production of CORC cables, the preparation cost of high-temperature superconducting tapes is very high, the winding equipment is complex, and the cable winding process is cumbersome.

[0004] Therefore, a set of simple evaluation device and its evaluation method that conform to the characteristics of the winding process are needed to evaluate the feasibility of the winding scheme at low cost, with multiple parameters, and high efficiency. Summary of the Invention

[0005] The purpose of this application is to overcome the above technical deficiencies, and propose a testing device and a testing method for superconducting tapes, so as to solve the technical problems of high preparation cost, complex winding equipment, and cumbersome cable winding process in the prior art.

[0006] To achieve the above technical purpose, this application adopts the following technical solutions: In the first aspect, this application provides a testing device for superconducting tapes, including a fixed support module, a movable support module, a straight rod, and a tape fixing module: Fixed support module; Movable support module, the movable support module is slidably connected to the fixed support module in the vertical direction; Straight rod, the straight rod is rotatably connected to the movable support module; Strip fixing module, the strip fixing module is fixedly connected to the straight rod and is used for hanging superconducting strips.

[0007] In some embodiments of the present application, the fixed support module includes a base and a bracket, the movable support module includes a bracket vertical distance adjustment key, the bracket includes a transverse bracket and a longitudinal bracket which are perpendicularly connected to each other, the transverse bracket is covered on the base, the longitudinal bracket is slidably connected to the bracket vertical distance adjustment key, and the bracket vertical distance adjustment key is rotatably connected to the straight rod.

[0008] In some embodiments of the present application, the fixed support module further includes a metal row, and the metal row is covered on the transverse bracket.

[0009] In some embodiments of the present application, the fixed support module further includes a rocker vertical distance adjustment key, the movable support module further includes a rocker and a pull rod, the rocker vertical distance adjustment key is fixedly connected to the base and is disposed opposite to the longitudinal bracket, the pull rod is slidably connected to the rocker vertical distance adjustment key, and the rocker is respectively connected to the pull rod and the straight rod.

[0010] In some embodiments of the present application, the movable support module further includes a rotating shaft and a bearing, the bearing is sleeved on the periphery of the rotating shaft, and the rotating shaft is connected end to end with the rocker and is bolted to the straight rod.

[0011] In some embodiments of the present application, the movable support module further includes an angle adjustment key and a connection key, the angle adjustment key is rotatably connected to the connection key, and the connection key is connected to the rocker vertical distance adjustment key.

[0012] In some embodiments of the present application, the movable support module further includes a limit key, and the limit key is respectively connected to the angle adjustment key and the rotating shaft.

[0013] In some embodiments of the present application, the strip fixing module includes a fixing block and two cantilevers, the fixing block is sleeved on the periphery of the straight rod, and the two cantilevers are respectively fixedly connected to the fixing block.

[0014] In some embodiments of the present application, the strip fixing module further includes a welding fixture and a weight hanging key, the welding fixture is clamped between the two cantilevers, and the welding fixture is connected to the weight hanging key through the superconducting strip.

[0015] In a second aspect, the present application also provides a method for testing a superconducting tape, using the testing device for a superconducting tape according to any one of the embodiments in the first aspect, including the following steps: Adjust the relative position between the movable support module and the fixed support module; Suspend the superconducting tape on the tape fixing module; Wind the superconducting tape around the straight rod; Test the superconducting tape.

[0016] Compared with the prior art, the beneficial technical effects brought by the technical solution provided by the present application include: By adjusting the relative position between the movable support module and the fixed support module, the winding angle of the straight rod is adjusted, and the superconducting tape is wound around the straight rod, so that the influence of the diameter of the straight rod and the inclination angle of the straight rod on the current-carrying performance of the superconducting tape can be tested at low cost, and the research efficiency of the evaluation of the superconducting tape and the exploration of the CORC superconducting cable winding process can be greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present application, the drawings required for use in the embodiments will be briefly introduced below: Figure 1 is a schematic structural diagram of a testing device for a superconducting tape provided by an embodiment of the present application; Figure 2 is a schematic structural diagram of a base provided by an embodiment of the present application; Figure 3 is a schematic structural diagram of a bracket provided by an embodiment of the present application; Figure 4 is a schematic structural diagram of a vertical distance adjustment key provided by an embodiment of the present application; Figure 5 is a schematic structural diagram of a rotating shaft provided by an embodiment of the present application; Figure 6 is a schematic structural diagram of a fixing block provided by an embodiment of the present application; Figure 7 is a schematic structural diagram of a welding fixture provided by an embodiment of the present application; Figure 8 is a schematic structural diagram of a tape fixing module provided by an embodiment of the present application.

[0018] Reference numerals: 1 - Base, 2 - Bracket, 3 - Metal row, 4 - Straight rod, 5 - Fixed block, 6 - Cantilever, 7 - Welding fixture, 8 - Rotating shaft, 9 - Bearing, 10 - Limit key, 11 - Rocker, 12 - Angle adjustment key, 13 - Pull rod, 14 - Connection key, 15 - Rocker vertical distance adjustment key, 16 - Bracket vertical distance adjustment key, 17 - Heavy object suspension key. Detailed implementation manners

[0019] In order to make the objectives, technical solutions and advantages of the present application clearer and more understandable, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0020] Those skilled in the art of the present technology can understand that in this specification, the term "including" is an open expression, which means that there are the described features but does not exclude other features. The orientation terms "upper", "lower", "left", "right", etc. are exemplary directions based on the accompanying drawings. The features defined with "first" and "second" implicitly include one or more of such features. The singular form can also be used for the plural form. The meaning of "a plurality" is two or more. The terms "mounted", "connected", and "connected" can be fixedly connected, detachably connected, or integrally connected; they can be directly connected or indirectly connected through an intermediate medium, and can be the communication inside two components. In addition, "connection" can include wireless connection.

[0021] The objective of the present application is to overcome the above technical deficiencies, and propose a test device and test method for superconducting tapes, so as to solve the technical problems of high preparation cost, complex winding equipment, and cumbersome cable winding process in the prior art.

[0022] To achieve the above technical objectives, the present application adopts the following technical solutions: In the first aspect, the present application provides a test device for superconducting tapes, as Figure 1 shown Figure 1 is a schematic structural diagram of a test device for superconducting tapes provided by an embodiment of the present application.

[0023] A test device for superconducting tapes includes a fixed support module, a movable support module, a straight rod 4, and a tape fixing module: Fixed support module; Movable support module, the movable support module is slidably connected to the fixed support module in the vertical direction; Straight rod 4, the straight rod 4 is rotatably connected to the movable support module; Tape fixing module, the tape fixing module is fixedly connected to the straight rod 4 and is used for hanging superconducting tapes.

[0024] By adjusting the relative position between the movable support module and the fixed support module, the winding angle of the straight rod 4 is adjusted, and the superconducting tape is wound around the straight rod 4, so that the influence of the diameter of the straight rod 4 and the inclination angle of the straight rod 4 on the current-carrying performance of the superconducting tape can be tested at low cost, and the evaluation efficiency of the superconducting tape and the research efficiency of the CORC superconducting cable winding process can be greatly improved.

[0025] The fixed support module serves as the foundation of the test device, which is used to support the entire device and provide a stable operation platform.

[0026] The movable support module is slidably connected to the fixed support module in the vertical direction, allowing the operator to adjust the inclination angle of the straight rod 4, that is, the winding angle.

[0027] The straight rod 4 is rotatably connected to the movable support module to simulate the core of the superconducting cable. The diameter and inclination angle of the straight rod 4 can be adjusted to simulate different winding conditions.

[0028] The tape fixing module is fixedly connected to the straight rod 4 and is used to hang the superconducting tape. One end of the superconducting tape is fixed through this module, and the other end hangs a heavy object to control the tension.

[0029] By adjusting the relative position between the movable support module and the fixed support module, tests can be carried out without actually winding a complete cable, greatly reducing the test cost. The design of the device allows for easy adjustment of the diameter and inclination angle of the straight rod 4, simulating different winding conditions, improving the flexibility and diversity of the tests. By quickly adjusting the test parameters, multiple tests can be efficiently carried out, accelerating the research progress of the performance evaluation of the superconducting tape and the CORC superconducting cable winding process.

[0030] As Figures 2 to 4 shown, Figure 2 is a schematic structural diagram of a base 1 provided by an embodiment of the present application; Figure 3 is a schematic structural diagram of a bracket 2 provided by an embodiment of the present application; Figure 4 is a schematic structural diagram of a vertical distance adjustment key provided by an embodiment of the present application.

[0031] In some embodiments of the present application, the fixed support module includes a base 1 and a bracket 2, the movable support module includes a bracket vertical distance adjustment key 16, the bracket 2 includes a transverse bracket 2 and a longitudinal bracket 2 that are perpendicularly connected to each other, the transverse bracket 2 is disposed on the base 1, the longitudinal bracket 2 is slidably connected to the bracket vertical distance adjustment key 16, and the bracket vertical distance adjustment key 16 is rotatably connected to the straight rod 4.

[0032] Among them, the base 1 serves as the foundation of the entire device, providing a stable platform for supporting the horizontal bracket 2 and the vertical bracket 2. It can raise the position of the bracket 2 and extend the length of the superconducting tape that can be wound; The bracket 2 is a support for the superconducting tape during the winding process of the superconducting cable; the vertical distance adjustment key 16 of the bracket is used to adjust the height of the straight rod 4 on the side of the fixed block 5, and the straight rod 4 on the side of the fixed block 5 is fixed to the bracket 2. By adjusting this key, the height of this end of the straight rod 4 can be changed, thereby adjusting the winding angle and the tension of the superconducting tape.

[0033] The straight rod 4 serves as the core of the simulated superconducting cable and is the support for the superconducting current-carrying fluid; as the core of the simulated superconducting cable, it is the support for the superconducting current-carrying fluid. The superconducting tape is wound around the straight rod 4 to simulate the winding process of the actual cable. One end of the straight rod 4 is placed on the vertical arm of the bracket 2, and the other end is fixed to the rotating shaft. The straight rod 4 near the fixed block 5 is placed on the vertical distance adjustment key 16 of the bracket; the two vertical distance adjustment keys are connected to the bracket 2 by bolts. One end of the straight rod 4 is cylindrical and is placed on the fixed end of the bracket 2; one end is a square column with two through holes, and its thickness is the same as the width of the groove opened on the rotating shaft 8, and it is fixed to the rotating shaft 8 by two bolts; and the side of the straight rod 4 connected to the rotating shaft 8 is lower than the other side.

[0034] The design of the base 1 and the bracket 2 ensures the stability of the entire device during the test and provides a solid support for the superconducting tape. The vertical distance adjustment key 16 of the bracket allows the operator to precisely adjust the height of the straight rod 4, thereby simulating different winding angles and tension conditions, improving the flexibility and accuracy of the test. The design of the base 1 helps to raise the position of the bracket 2, thereby extending the length of the superconducting tape that can be wound, enabling longer superconducting tape segments to be tested.

[0035] The bracket 2 and the parts above it are fixed to the base 1 by bolts, and the parts above the base 1 are disassembled as a whole after the winding is completed.

[0036] In some embodiments of the present application, the fixed support module further includes a metal row 3, and the metal row 3 is covered on the horizontal bracket 2.

[0037] The metal row 3 is fixed to the bottom end of the bracket 2; the metal row 3 is covered on the horizontal bracket 2 and serves as a conductive medium for connecting the superconducting tape and the current lead. The metal row 3 usually has good electrical conductivity and thermal conductivity and is suitable for electrical connection and heat dissipation.

[0038] The vertical part of the superconducting tape is welded to the metal row 3, and the purpose of doing this is to ensure good electrical contact between the superconducting tape and the metal row 3, so as to effectively transfer current.

[0039] One end of the current lead is welded to the strip welding fixture 7, and the other end is welded to the bus bar 3. In this way, the current can be transmitted to the superconducting tape through the current lead, and the current can be measured during the test.

[0040] By welding the superconducting tape to the bus bar 3, a good electrical contact between the superconducting tape and the test device can be ensured, the contact resistance can be reduced, and the test accuracy can be improved. The use of the bus bar 3 helps to stabilize the current transmission and reduce the current fluctuation caused by poor contact, thereby improving the reliability of the test results. The welding of the current lead provides an access point for current measurement, enabling the current-carrying performance of the superconducting tape to be conveniently monitored and analyzed during the test.

[0041] The bus bar 3 can be made of a copper bar.

[0042] As Figure 5 shown, Figure 5 is a schematic structural diagram of a rotating shaft 8 provided by an embodiment of the present application.

[0043] In some embodiments of the present application, the fixed support module further includes a rocker vertical distance adjustment key 15, the movable support module further includes a rocker 11 and a pull rod 13. The rocker vertical distance adjustment key 15 is fixedly connected to the base 1 and is disposed opposite to the longitudinal bracket 2. The pull rod 13 is slidably connected to the rocker vertical distance adjustment key 15, and the rocker 11 is respectively connected to the pull rod 13 and the straight rod 4.

[0044] The rocker vertical distance adjustment key 15 is fixedly connected to the base 1 and is disposed relative to the longitudinal bracket 2. It is used to adjust the height on the side of the rocker 11, thereby changing the inclination angle of the straight rod 4.

[0045] The rocker 11 is connected to the pull rod 13 and the straight rod 4, playing a role in transmitting force and motion. The rocker 11 can wind the superconducting tape by being shaken.

[0046] The pull rod 13 is slidably connected to the rocker vertical distance adjustment key 15 and is used to fix the inclination angle of the straight rod 4. When the position of the pull rod 13 is fixed, the inclination angle of the straight rod 4 is also fixed accordingly.

[0047] Through the combination of the rocker 11 and the pull rod 13, the inclination angle of the straight rod 4 can be accurately adjusted and fixed, which is crucial for simulating different winding conditions.

[0048] The rocker vertical distance adjustment key 15 allows the operator to easily adjust the height on the side of the rocker 11, thereby changing the winding position of the superconducting tape to test the performance at different heights.

[0049] In some embodiments of the present application, the movable support module further includes a rotating shaft 8 and a bearing 9. The bearing 9 is sleeved around the periphery of the rotating shaft 8. The rotating shaft 8 is connected end to end with the rocker 11 and is bolted to the straight rod 4.

[0050] The rotating shaft 8 is connected to the bearing 9, the rocker 11, and the straight rod 4. The bearing 9 is fixed inside the angle adjustment key 12 and outside the rotating shaft 8 and can rotate. The rotating shaft 8 is fixedly connected to the straight rod 4 by bolts and is fixed in the bearing 9. There is a rocker 11 at the tail, which can realize the rotation of the cable core.

[0051] The rotating shaft 8 is connected end to end with the rocker 11 and is fixedly connected to the straight rod 4 by bolts. The function of the rotating shaft 8 is to transmit rotational motion, enabling the straight rod 4 (simulating the cable core) to rotate around its axis.

[0052] The bearing 9 is sleeved around the periphery of the rotating shaft 8 and is fixed inside the angle adjustment key 12. The bearing 9 allows the rotating shaft 8 to rotate freely inside it, while reducing friction and wear.

[0053] When the rocker 11 is operated, the rotating shaft 8 rotates accordingly, thereby driving the straight rod 4 to rotate. In this way, the superconducting tape can be wound around the straight rod 4 to simulate the winding process of an actual cable.

[0054] The combination of the rotating shaft 8 and the bearing 9 provides high-precision rotational motion, enabling the straight rod 4 to rotate flexibly to simulate different winding angles and conditions. The use of the bearing 9 greatly reduces the friction during rotation, making the operation smoother and also extending the service life of the device. By operating the rotating shaft 8 with the rocker 11, the operator can easily control the rotation of the straight rod 4, simplifying the winding process.

[0055] In some embodiments of the present application, the movable support module further includes an angle adjustment key 12 and a connection key 14. The angle adjustment key 12 is rotatably connected to the connection key 14, and the connection key 14 is connected to the rocker vertical distance adjustment key 15.

[0056] The angle adjustment key 12 is connected to the rocker vertical distance adjustment key 15 through the connection key 14. The angle adjustment key 12 and its connection part can rotate around the connection key 14 as a whole, thereby adjusting the inclination angle of the straight rod 4 and fixing the angle through the pull rod 13. The connection key 14 connects the angle adjustment key 12 to the vertical distance adjustment key and can adjust the vertical height of the angle adjustment key 12 and its connection part by sliding at the lower end of the bracket 2, so that the straight rod 4 is placed on the higher end of the bracket 2.

[0057] The angle adjustment key 12 is used to adjust the inclination angle of the straight rod 4. It is connected to the rocker vertical distance adjustment key 15 through the connection key 14 to form a rotatable whole.

[0058] The connecting key 14, as an intermediate component, connects the angle adjustment key 12 and the rocker vertical distance adjustment key 15. It enables the angle adjustment key 12 to rotate around the connecting key 14, thereby changing the inclination angle of the straight rod 4.

[0059] When the operator rotates the angle adjustment key 12, the connecting key 14 will drive the rocker vertical distance adjustment key 15, thereby changing the height of the rocker 11 and adjusting the inclination angle of the straight rod 4.

[0060] The pull rod 13 is used to fix the inclination angle of the straight rod 4. After adjusting to the required angle, the angle is fixed by the pull rod 13 to ensure that the straight rod 4 maintains a stable inclination angle during the test.

[0061] The design of the angle adjustment key 12 allows the operator to precisely adjust the inclination angle of the straight rod 4, which is crucial for simulating different winding conditions. Using the pull rod 13 to fix the angle can ensure that the straight rod 4 does not move accidentally during the test, improving the reliability of the test.

[0062] The connecting key 14 connects the angle adjustment key 12 and the vertical distance adjustment key, and by sliding at the lower end of the bracket 2, the vertical height of the angle adjustment key 12 and its connecting part can be adjusted, so that the straight rod 4 is placed on the higher end of the bracket 2.

[0063] In some embodiments of the present application, the movable support module further includes a limit key 10, and the limit key 10 is respectively connected to the angle adjustment key 12 and the rotating shaft 8.

[0064] The limit key 10 is fixed on the angle adjustment key 12, and the rotating shaft 8 can be fixed by a nut; the limit key 10 is a component that restricts the rotation of the rotating shaft 8, and it can fix the straight rod 4 at the end of winding.

[0065] The limit key 10 is connected to the angle adjustment key 12 and the rotating shaft 8. It is usually fixed on the angle adjustment key 12, and the connection with the rotating shaft 8 may be through a nut or other fixing devices. The design of the limit key 10 allows the rotating shaft 8 to rotate within a certain range, but beyond this range, it will be restricted by the limit key 10, thereby preventing equipment damage or inaccurate testing caused by excessive rotation. By fixing the rotating shaft 8 on the limit key 10 with a nut, it can ensure that the rotating shaft 8 remains stable after being adjusted to the required angle and will not change its position due to external forces or vibrations.

[0066] As Figures 6 to 8 shown, Figure 6 is a schematic structural diagram of a fixing block 5 provided by an embodiment of the present application; Figure 7 is a schematic structural diagram of a welding fixture 7 provided by an embodiment of the present application; Figure 8 It is a schematic structural diagram of a strip fixing module provided by an embodiment of the present application.

[0067] In some embodiments of the present application, the strip fixing module includes a fixing block 5 and two cantilevers 6. The fixing block 5 is sleeved around the outer periphery of the straight rod 4, and the two cantilevers 6 are respectively fixedly connected to the fixing block 5.

[0068] The fixing block 5 is fixed on the straight rod 4, and its function is to hang the copper welding fixture 7 welded with the superconducting strip and fix it relative to the straight rod 4. The cantilever 6 is the hanging point of the copper welding fixture 7, which allows the copper welding fixture 7 to rotate (vertically) along the direction of the superconducting strip.

[0069] The straight rod 4 is inserted through the fixing block 5 and fixed with bolts; the cantilever 6 is fixed to the fixing block 5.

[0070] The fixing block 5 is sleeved around the outer periphery of the straight rod 4, and its function is to provide a stable support point for fixing the copper welding fixture 7 welded with the superconducting strip. The fixation between the fixing block 5 and the straight rod 4 ensures the stability of the entire structure.

[0071] The two cantilevers 6 are respectively fixedly connected to the fixing block 5, and they act as the hanging points of the copper welding fixture 7. The design of the cantilever 6 allows the copper welding fixture 7 to rotate in the vertical direction, so that it can be adjusted accordingly with the winding direction of the superconducting strip.

[0072] After the superconducting strip is welded to the copper welding fixture 7, the fixture is hung on the fixing block 5 through the cantilever 6. The rotational ability of the cantilever 6 enables the superconducting strip to maintain the correct direction and tension during the winding process.

[0073] Two threaded holes are opened at the bottom of the fixing block 5. There is a triangular through hole at the upper end of the threaded hole. After the straight rod 4 passes through the triangular through hole, it is fixed by two nuts. There are two through holes at the top for fixing the cantilever 6.

[0074] In some embodiments of the present application, the strip fixing module further includes a welding fixture 7 and a heavy object hanging key 17. The welding fixture 7 is clamped between the two cantilevers 6, and the welding fixture 7 is connected to the heavy object hanging key 17 through the superconducting strip.

[0075] The copper welding fixture 7 is coaxially connected in the middle of the two cantilevers 6 and naturally hangs down under the action of gravity.

[0076] The welding fixture 7 is designed to clamp the superconducting strip, and it is located between the two cantilevers 6. The function of the fixture is to ensure that the superconducting strip maintains the correct position and tension during the test.

[0077] The heavy object suspension key 17 is connected to the welding fixture 7. The function of this key is to provide additional weight to help maintain the tension of the superconducting tape or simulate the load in actual use.

[0078] The welding fixture 7 is coaxially connected between two cantilevers 6, which means that the central axis of the fixture is aligned with the central axis of the cantilever 6, ensuring the balance and stability of the fixture.

[0079] Under the action of gravity, the welding fixture 7 and the connected heavy object suspension key 17 droop naturally, which helps to maintain the tension and straightness of the superconducting tape.

[0080] The welding fixture 7 is provided with a groove with a depth of 0.5 mm and a width of 5 mm, so that the superconducting tape embedded in the welding is parallel to the fixture. When the welding fixture 7 is suspended on the cantilever 6, it is in a vertical state. At this time, the angle between the superconducting tape and the straight rod 4 is the winding angle during the cable winding process.

[0081] The tension control of the superconducting tape is achieved by suspending heavy objects, and the winding of the superconducting tape is achieved by rotating the aluminum alloy screw.

[0082] The material type is not limited to aluminum alloy, copper, and stainless steel, and the rotating shaft 8 is not limited to being shaken by the rocker 11 or driven by a motor.

[0083] In a second aspect, the present application also provides a test method for a superconducting tape, using the test device for a superconducting tape as described in any one of the embodiments of the first aspect, including the following steps: Adjust the relative position between the movable support module and the fixed support module; Suspend the superconducting tape on the tape fixing module; Wind the superconducting tape around the straight rod 4; Test the superconducting tape.

[0084] In a specific embodiment, the test method includes: Complete the assembly of the above test device; Select a straight rod 4 with a diameter of D, wrap it with evenly distributed insulating polyimide, and connect it to the rotating shaft 8 through bolts; Loosen the bolt between the pull rod 13 and the vertical distance adjustment key, and adjust the angle adjustment key 12 so that the angle between the straight rod 4 and the vertical direction reaches a predetermined value (winding angle); Tighten the bolt between the pull rod 13 and the vertical distance adjustment key to fix the inclination angle of the straight rod 4; Adjust the position of the vertical distance adjustment key on the bracket 2 so that the left side of the straight rod 4 touches the arc-shaped support area at the top left of the bracket 2; Fix the fixed block 5 on the side away from the rotating shaft 8; Fix the rotating shaft 8 with the limit key 10 so that the fixed block 5 is on the upper side of the straight rod 4 and remains vertical; Connect the superconducting tape to the welding fixture 7 and suspend it at the end of the cantilever 6 through a screw; Suspend the corresponding weight (e.g., 1 Kg) at the hanging end of the superconducting tape so that the tension of the superconducting tape reaches the set value; Steady the rocker 11 by hand and unscrew the bolt on the limit key 10; Shake the rocker 11 evenly so that the superconducting tape is slowly wound around the straight rod 4; Wind a set number of turns (e.g., 1.5 turns). When the fixed block 5 is in the vertically downward state, fix the rotating shaft 8 with the limit key 10 to fix the straight rod 4 and prevent it from rotating; Weld the vertical part of the superconducting tape to the metal row 3; Cut off the remaining superconducting tape to complete the winding; Unscrew the bolt between the bracket 2 and the base 1, and use the bracket 2 and the above part as a whole for the performance test sample of the superconducting tape after winding; Weld voltage measurement points at both ends of the superconducting tape wound around the straight rod 4; Weld current leads on the tape welding fixture 7 and the metal row 3; Immerse the entire test sample in liquid nitrogen, pass current (current rising rate 1 V / s) to test the critical current of the wound superconducting tape, and compare it with the performance before winding.

[0085] By changing the diameter of the straight rod 4, the inclination angle of the straight rod 4, and the weight of the hanging object at the end of the tape, the influence of the CORC superconducting cable winding core, winding angle, and tape winding angle on the current-carrying performance of the superconducting tape can be explored, greatly improving the research efficiency of superconducting tape evaluation and CORC superconducting cable winding process exploration.

[0086] This method can accurately simulate the actual winding process of the superconducting cable, thereby more accurately evaluating the performance of the superconducting tape.

[0087] By changing the diameter of the straight rod 4, the inclination angle, and the weight of the hanging object at the end of the tape, the influence of different factors on the current-carrying performance of the superconducting tape can be explored.

[0088] This method simplifies the test process and improves the research efficiency of superconducting tape evaluation and CORC superconducting cable winding process.

[0089] Due to the standardization of the test device, this method has good repeatability, which helps to verify the reliability of the test results.

[0090] This method is applicable to different types of superconducting tapes and has wide applicability.

[0091] By precisely controlling the winding parameters and test conditions, the errors in the test process are reduced.

[0092] Compared with the prior art, the beneficial technical effects brought by the technical solution provided in this application include: In this application, by adjusting the relative position between the movable support module and the fixed support module, the winding angle of the straight rod 4 is adjusted, and the superconducting tape is wound around the straight rod 4, so that the influence of the diameter of the straight rod 4 and the inclination angle of the straight rod 4 on the current-carrying performance of the superconducting tape can be tested at low cost, and the research efficiency of the evaluation of the superconducting tape and the exploration of the CORC superconducting cable winding process can be greatly improved.

[0093] Those skilled in the art of this technology can understand that the steps, measures, and solutions in the various operations, methods, and processes discussed in this application can be alternated, changed, rearranged, decomposed, combined, or deleted.

[0094] The specific implementation manners of the present application described above do not constitute a limitation on the protection scope of the present application. Any other corresponding changes and deformations made according to the technical concept of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A superconducting tape testing device, characterized in that: include: Fixed support module; A movable support module, wherein the movable support module is slidably connected to the fixed support module along a vertical direction; A straight rod, the straight rod being rotatably connected to the movable support module; A tape fixing module is fixedly connected to the straight rod and is used for suspending the superconducting tape.

2. A superconducting tape testing device according to claim 1, characterized in that: The fixed support module includes a base and a bracket, the movable support module includes a bracket vertical distance adjustment key, the bracket includes a transverse bracket and a longitudinal bracket vertically connected to each other, the transverse bracket is covered on the base, the longitudinal bracket is slidably connected to the bracket vertical distance adjustment key, and the bracket vertical distance adjustment key is rotatably connected to the straight rod.

3. A superconducting tape testing device according to claim 2, characterized in that: The fixed support module further includes a metal row, and the metal row is covered on the transverse support.

4. A superconducting tape testing device according to claim 2, characterized in that: The fixed support module also includes a rocker vertical distance adjustment key, and the movable support module also includes a rocker and a pull rod. The rocker vertical distance adjustment key is fixedly connected to the base and is arranged opposite to the longitudinal bracket. The pull rod is slidably connected to the rocker vertical distance adjustment key, and the rocker is respectively connected to the pull rod and the straight rod.

5. A superconducting tape testing device according to claim 4, characterized in that: The movable support module further comprises a rotating shaft and a bearing. The bearing is sleeved on the periphery of the rotating shaft. The rotating shaft is connected end to end with the rocker arm and is bolted to the straight rod.

6. A superconducting tape testing device according to claim 5, characterized in that: The movable support module also includes an angle adjustment key and a connection key, wherein the angle adjustment key is rotationally connected to the connection key, and the connection key is connected to the rocker vertical distance adjustment key.

7. A superconducting tape testing device according to claim 6, characterized in that: The movable support module further comprises a limit key, and the limit key is respectively connected to the angle adjustment key and the rotation shaft.

8. A superconducting tape testing device according to claim 1, characterized in that: The strip fixing module comprises a fixing block and two cantilevers. The fixing block is sleeved on the periphery of the straight rod, and the two cantilevers are fixedly connected to the fixing block respectively.

9. A superconducting tape testing device according to claim 8, characterized in that: The strip fixing module further comprises a welding fixture and a heavy object suspension key. The welding fixture is clamped between the two cantilevers and is connected to the heavy object suspension key through the superconducting strip.

10. A method for testing a superconducting tape, characterized in that: A superconducting tape testing device according to any one of claims 1 to 9, comprising the following steps: Adjusting the relative position between the movable support module and the fixed support module; suspending a superconducting tape on a tape fixing module; Winding the superconducting tape on the straight rod; The superconducting tape was tested.

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