Measuring equipment applied to critical current of superconducting tape

Abstract

The utility model relates to a measuring device applied to superconductive tape critical current, which comprises a mounting seat, a cooling tank, a wiring assembly and a height adjusting device, and is characterized in that the mounting seat is used for bearing a main body and mounting and fixing parts. The wiring assembly is integrally arranged on the mounting seat, and the wiring assembly is used for mounting and driving the superconducting tape to perform wiring; the wiring assembly comprises an immersion part, the immersion part is located in the cooling tank and used for guiding the superconducting tape to enter and exit from the cooling tank, and the immersion part is used for installing a detection instrument. The cooling tank is arranged below the mounting seat, the height adjusting device is connected with the cooling tank, and the height adjusting device drives the cooling tank to vertically move so as to switch the state of immersing the immersion part in the cooling liquid and the state of separating the immersion part from the cooling liquid. Through the arrangement of the structure, the cooling tank has a displacement adjusting effect, when the superconducting tape is subjected to wiring operation, a worker can move and adjust the position of the cooling tank according to operation requirements so as to carry out wiring operation, and the superconducting tape wiring device has the advantage of being high in use flexibility.

Description

Technical Field

[0001] The utility model relates to the technical field of superconducting tape measurement, in particular to a measuring device applied to the critical current of a superconducting tape. Background Art

[0002] Critical current is a crucial physical parameter of superconducting materials. Understanding the current-carrying capacity of superconducting tapes under varying temperatures and magnetic fields is essential for various applications. Currently, electrical and magnetic methods are commonly used for detection. Magnetic measurement, however, is non-destructive and is the most widely used method in practice, as it requires no direct contact with the superconducting sample.

[0003] Commonly used magnetic measurement equipment features a cooling assembly, where the superconducting tape is immersed in a cooling trough for cooling. The sensors performing the detection are also immersed in the trough. As the superconducting tape gradually moves along the wire, the sensors monitor the movement of the tape in real time. However, these common measurement equipment lacks structural adjustment capabilities. During the initial routing of the superconducting tape, the trough contains components for positioning the wires, as the tape must be immersed in the cooling trough for cooling. During the routing process, the positioning of the cooling trough interferes with the operator's wiring operations, resulting in significant operational inconvenience and low equipment detection efficiency. Utility Model Content

[0004] In response to the above technical problems, the utility model provides a measuring device for the critical current of superconducting tapes. Through the structural setting, the cooling groove has the effect of displacement adjustment. When performing wiring operations on the superconducting tapes, the staff can move and adjust the position of the cooling groove according to the requirements of the operation to perform wiring operations, which has the advantage of high flexibility in use.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A device for measuring critical current of a superconducting tape, comprising:

[0007] Mounting seat;

[0008] a cooling trough, the cooling trough being arranged on the mounting seat;

[0009] a wiring assembly disposed on the mounting seat and configured to mount and drive the superconducting tape for routing; the wiring assembly comprising an immersion portion capable of entering the interior of the cooling tank to guide the superconducting tape in and out of the cooling tank;

[0010] a magnetic detection device, mounted on the immersion portion;

[0011] A height adjustment device is connected to the cooling tank and is used to drive the cooling tank to move vertically to switch the state of the immersion part being immersed in and out of the cooling tank.

[0012] In one embodiment, the height adjustment device is provided on both sides of the cooling trough.

[0013] In one embodiment, the wiring assembly includes a first wire reel, a second wire reel, and a wire pulley;

[0014] The guide pulley guides the superconducting tape to be routed between the first wire drum and the second wire drum, and a pre-inspection routing section and a post-inspection routing section close to each other are formed between the first wire drum and the second wire drum;

[0015] The pre-inspection routing segment and the post-inspection routing segment include horizontal segments and vertical segments that are symmetrical to each other.

[0016] In one embodiment, a device for inspecting the appearance of the superconducting tape is installed at at least one of the horizontal sections.

[0017] In one embodiment, an abnormal point marking device is installed at at least one of the horizontal sections to mark abnormal points detected by the appearance detection device and / or the magnetic detection device.

[0018] In one embodiment, the abnormal point marking device is arranged along the direction of the superconducting tape and is located behind the appearance detection device.

[0019] In one embodiment, a drying device shared by the pre-inspection routing section and the post-inspection routing section is provided in the vertical section.

[0020] In one embodiment, the first wire reel is a wire pay-off reel, and the second wire reel is a wire take-up reel; or, the first wire reel is a wire take-up reel, and the second wire reel is a wire pay-off reel.

[0021] In one embodiment, a superconducting tape length measuring device is also installed on the mounting seat for measuring the routing length of the superconducting tape in the wiring assembly.

[0022] In one embodiment, the wiring assembly further includes a tension meter, which is movably connected to the mounting base. The mounting base is further provided with an adjustment component for driving the tension meter to move so as to adjust the superconducting tape winding tension.

[0023] The utility model has the following advantages due to the adoption of the above technical solution:

[0024] When using this measuring device to measure the critical current of a superconducting tape, the staff only needs to install the superconducting tape on the wiring assembly and complete the initial threading and routing of the superconducting tape. Before routing, the staff can operate the height adjustment device to drive the cooling tank downward, causing the immersed part to be separated from the cooling tank, thereby switching the cooling tank adjustment to a state of being separated from the cooling medium. Therefore, during the threading and routing process, the staff can completely avoid the cooling tank, preventing the overall structure of the cooling tank from interfering with the threading and routing operations. After completing the threading and installation of the superconducting tape, the staff can operate the height adjustment device to drive the cooling tank upward, causing the immersed part to be immersed in the cooling tank again, thereby switching the cooling tank adjustment to a state of being immersed in the cooling medium. At this time, the preliminary superconducting tape installation preparation work of the measuring equipment is completed;

[0025] During normal measurement, the magnetic detection device is activated, along with the wiring assembly, driving the superconducting tape for routing. The tape gradually immerses into the cooling tank, where the magnetic detection device tests the current-carrying capacity of the cooled tape, ultimately completing the measurement of the entire tape. The cooling tank's structural configuration allows for displacement adjustment, allowing operators to adjust the position of the cooling tank as needed during wiring operations, offering greater flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present invention, and together with the description, serve to explain the principles of the present invention.

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0028] Figure 1 This is a schematic structural diagram of a device for measuring critical current of a superconducting tape in one embodiment of the present invention;

[0029] Figure 2 This is a schematic structural diagram of a device for measuring critical current of a superconducting tape in another embodiment of the present invention;

[0030] Figure 3 The present invention is a schematic structural diagram of a wiring assembly of a device for measuring critical current of a superconducting tape.

[0031] Reference numerals:

[0032] 1. Mounting base; 2. Cooling tank; 3. Wiring assembly; 30. Immersion section; 31. First wire drum; 32. Second wire drum; 33. Wire pulley; 34. Appearance inspection device; 35. Abnormal point marking device; 36. Drying device; 37. Tensiometer; 38. Superconducting tape length measuring device; 4. Superconducting tape; 41. Horizontal section; 42. Vertical section; 5. Height adjustment device; 6. Magnetic detection device. DETAILED DESCRIPTION

[0033] To make the purpose, technical solutions, and advantages of the present invention more clear, the following is a clear and complete description of the technical solutions of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary persons in this field without creative work are within the scope of protection of the present invention.

[0034] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the usual meanings understood by persons of ordinary skill in the field to which this utility model belongs. The words "first", "second", "third", "fourth" and similar terms used in this utility model do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0035] Commonly used magnetic measurement equipment has a cooling assembly, wherein a cooling trough is provided for immersing the superconducting tape in a cooling medium for cooling, and the sensor for detection is also immersed in the cooling trough. As the superconducting tape gradually moves along the line, the sensor detects the moving superconducting tape in real time. Commonly used measurement equipment does not have the function of structural adjustment. During the early stage of wiring the superconducting tape, the superconducting tape needs to be immersed in the cooling trough for cooling. Therefore, the cooling trough contains components for positioning the line. During the wiring process, the position and structure of the cooling trough will interfere with the wiring operation of the staff, resulting in extremely inconvenient overall operation and low equipment detection efficiency. In response to the above technical problems, the present invention provides a measurement device for the critical current of superconducting tape. Through the structural setting, the cooling trough has the effect of displacement adjustment. When wiring the superconducting tape, the staff can move and adjust the position of the cooling trough according to the operation requirements to perform the wiring operation, which has the advantage of high flexibility in use. The technical solution of the present invention is described in detail below with reference to specific examples.

[0036] Reference Figures 1 to 3 As shown, the utility model relates to a measuring device for critical current of superconducting tape, comprising a mounting base 1, a cooling trough 2, a wiring assembly 3, a height adjustment device 5, and a magnetic detection device 6, wherein the mounting base 1 is used for bearing the main body and for installing and fixing components.

[0037] The wiring assembly 3 is arranged as a whole on the mounting seat 1, and the wiring assembly 3 is used to install and drive the superconducting tape 4 for routing; the wiring assembly 3 includes an immersion portion 30, which is located inside the cooling tank 2 and is used to guide the superconducting tape 4 in and out of the cooling tank 2; the magnetic detection device 6 is installed in the immersion portion 30.

[0038] The cooling tank 2 is disposed on the mounting base 1 and below the wiring assembly 3. A height adjustment device 5 is connected to the cooling tank 2. The height adjustment device 5 drives the cooling tank 2 to move vertically, thereby switching the immersion portion 30 between being immersed in and out of the cooling medium in the cooling tank 2. The cooling medium can be either liquid nitrogen or liquid helium.

[0039] It should be noted that in this embodiment, the magnetic detection device 6 specifically includes two excitation coils and a magnetic field detection device. The superconducting tape 4 forms a horizontal routing section within the immersion portion 30, which serves as the detection section. The two excitation coils are positioned at either end of the detection end, and the magnetic field detection device is positioned in the middle of the detection end. Under low-temperature conditions of the cooling medium, energizing the excitation coils generates a fixed magnetic field at the slits and measurement slits of the superconducting tape 4. When the superconducting tape 4 passes through the slits, a circular current is induced within the superconducting tape 4. This, combined with the magnetic field detection device, enables critical current detection of the superconducting tape. The specific detection method is a commonly used method and will not be elaborated upon here.

[0040] For example, when using this measuring device to measure the critical current of a superconducting tape, the operator only needs to install the superconducting tape 4 onto the wiring assembly 3 and complete the initial threading and routing of the superconducting tape 4. Before routing, the operator can operate the height adjustment device 5 to drive the cooling tank 2 downward, causing the immersion portion 30 to separate from the cooling tank 2, thereby adjusting the cooling tank 2 to a state of being separated from the cooling medium. Therefore, during the threading and routing process, the operator can completely avoid the cooling tank 2, preventing the overall structure of the cooling tank 2 from interfering with the threading and routing operation. After completing the threading and installation of the superconducting tape 4, the operator operates the height adjustment device 5 to drive the cooling tank 2 upward, causing the immersion portion 30 to be immersed in the cooling tank 2 again, thereby adjusting the cooling tank 2 to be immersed in the cooling medium. At this time, the preliminary preparation work for the installation of the superconducting tape 4 of the measuring device is completed.

[0041] During normal measurement, the magnetic detection device 6 is activated, along with the wiring assembly 3, driving the superconducting tape 4 for routing. The superconducting tape 4 gradually immerses into the cooling tank 2, where the magnetic detection device 6 tests the current-carrying capacity of the cooled superconducting tape 4, ultimately completing the measurement of all superconducting tapes 4. The cooling tank 2 is structurally adjustable, allowing operators to adjust the position of the cooling tank 2 to facilitate routing operations, offering greater flexibility.

[0042] In one embodiment, the overall structure of the height adjustment device 5 is further refined, and the height adjustment device 5 includes an electric push rod, and the telescopic shaft of the electric push rod is connected to the cooling tank 2. When the specific height of the cooling tank 2 needs to be adjusted, the electric push rod is operated to perform telescopic adjustment.

[0043] In another embodiment, the height adjustment device 5 may be a hydraulic lifting device or a manual lifting device.

[0044] In this embodiment, the height adjustment device 5 is described by taking an electric push rod as an example. In order to make the measuring device compact, Figure 2 As shown, the electric push rods can be arranged on both sides of the cooling tank 2, and the support points can be located on the upper part of the side walls of the cooling tank 2 to reduce the overall height of the measuring device.

[0045] In one embodiment, Figure 3 As shown, the overall structure of the wiring assembly 3 is further refined. The wiring assembly 3 includes a first wire drum 31, a second wire drum 32 and a wire pulley 33, wherein a plurality of wire pulleys 33 are provided. The wire pulley 33 is used for winding the superconducting tape 4 and guides the superconducting tape 4 from one of the first wire drum 31 and the second wire drum 32 to pass through the immersion part 30 and then to the other of the first wire drum 31 and the second wire drum 32 for winding and storage. The above-mentioned detection section is formed by the two wire pulleys 33 being arranged at intervals.

[0046] The first reel 31 can serve as a payout reel, and the second reel 32 as a take-up reel; alternatively, the first reel 31 can serve as a take-up reel, and the second reel 32 as a payout reel. Furthermore, the wiring assembly 3 is arranged in a mirrored configuration, with the first reel 31 and the second reel 32 facing each other, enabling bidirectional use and facilitating repeated testing of the superconducting tape 4.

[0047] A pre-inspection routing segment and a post-inspection routing segment close to each other are formed between the first wire drum 31 and the second wire drum 32 under the guidance of the wire pulley 33; the pre-inspection routing segment and the post-inspection routing segment include a horizontal segment 41 and a vertical segment 42 symmetrical to each other.

[0048] In this embodiment, the pre-inspection routing segment and the post-inspection routing segment between the first wire reel 31 and the second wire reel 32 are brought close to each other, and the pre-inspection routing segment is symmetrically provided with a horizontal segment 41 and a vertical segment 42 through the wire pulley 33, and the post-inspection routing segment is symmetrically provided with a horizontal segment 41 and a vertical segment 42. The first wire reel 31 and the second wire reel 32 can be installed in close proximity, making the measuring equipment compact.

[0049] In one embodiment, a visual inspection device for the superconducting tape 4 is installed at at least one of the horizontal sections 41. The visual inspection device 34 may include a camera to visually inspect the outer surface of the superconducting tape 4. The visual inspection device 34 may include an optical detection sensor or an acoustic detection sensor to detect the outer surface of the superconducting tape 4.

[0050] For example, if the appearance inspection device 34 uses a camera, it can capture real-time images of the superconducting tape 4 along its routing path. Workers can monitor the appearance of the superconducting tape 4 in real time through a display, conveniently detecting surface defects in the superconducting tape 4. Furthermore, the images captured by the camera can be transmitted to an identification device, which can then replace manual inspection for surface defects in the superconducting tape 4.

[0051] By installing the camera at the horizontal section 41 , the shooting angle of the camera can be adjusted more conveniently to be perpendicular to the superconducting tape 4 , so that the surface of the superconducting tape 4 can be captured more completely and clearly.

[0052] In order to facilitate better inspection of the appearance of the superconducting tape 4 when the inspection equipment is used in both directions, in an optional embodiment, an appearance inspection device 34 is provided on the horizontal sections 41 of the pre-inspection routing section and the post-inspection routing section.

[0053] The two appearance inspection devices 34 can also work simultaneously as a redundant configuration to increase the accuracy of appearance inspection.

[0054] In one embodiment, an abnormality marking device 35 is installed on at least one of the horizontal sections 41 to mark abnormalities detected by the appearance inspection device 34 and / or the magnetic inspection device 6. In this embodiment, the abnormality marking device can be a printing device, such as an inkjet valve, or a transfer device, such as a transfer marking machine. Installing the abnormality marking device 35 on the horizontal section 41 allows for easier adjustment of the marking angle of the abnormality marking device 35 to be perpendicular to the superconducting tape 4, allowing for more complete and clear marking of abnormalities on the surface of the superconducting tape 4.

[0055] When the appearance inspection device 34 detects an appearance problem or the magnetic inspection device 6 detects a quality problem, it feeds back to the control mechanism, and the control mechanism controls the abnormal point marking device 35 to mark the abnormal point on the superconducting tape 4 according to the rotation speed of the superconducting tape 4 and other factors.

[0056] In one embodiment, the abnormal point marking device 35 is disposed along the direction of travel of the superconducting tape 4 and behind the appearance inspection device 34. The distance between the abnormal point marking device 35 and the appearance inspection device 34 can be determined based on the rotational speed of the superconducting tape 4 and the response time of the abnormal point marking device 35.

[0057] In one embodiment, the temperature of the superconducting tape 4 decreases after entering the cooling tank 2. When the tape exits the cooling tank 2, the surrounding water vapor condenses into condensation and adheres to the superconducting tape 4, affecting its subsequent use. Therefore, in this embodiment, a drying device 36 shared by the pre-inspection routing section and the post-inspection routing section is provided in the vertical section 42. When the measuring device is used in both directions, the pre-inspection routing section and the post-inspection routing section are interchangeable. Therefore, it is only necessary to provide a drying device 36 at the vertical section 42 so that the pre-inspection routing section and the post-inspection routing section can be shared, and the superconducting tapes 4 entering and exiting the cooling tank 2 can be dried simultaneously.

[0058] In one embodiment, the wiring assembly 3 further includes a tension meter 37 , which is movably connected to the mounting base 1 . The mounting base 1 is also provided with an adjustment assembly for driving the tension meter 37 to move so as to adjust the winding tension of the superconducting tape 4 .

[0059] Specifically, in this embodiment, the adjustment assembly includes a stud. The rotating shaft of the tensiometer 37 is vertically movably connected to the mounting base 1. The rotating shaft is also threadedly connected to the stud. By rotating the stud, the rotating shaft of the tensiometer 37 can be adjusted in height, thereby adjusting the winding tension of the superconducting tape 4. During the measurement process, the operator can observe the routing of the superconducting tape 4 in the wiring assembly 3 and adjust the tensiometer 37 as needed to adjust the tension of the superconducting tape 4. The addition of the tensiometer 37 can improve the operational stability of the measuring device.

[0060] In some embodiments, a superconducting tape length measuring device 38 is further provided on the mounting base 1 for measuring the length of the superconducting tape 4 in the wiring assembly 3. The superconducting tape length measuring device 38 may include a roller meter or an optical length measuring sensor. Specific implementation method:

[0062] When using this measuring device to measure the critical current of a superconducting tape, the operator only needs to install the superconducting tape 4 on the wiring assembly 3 and complete the preliminary threading and routing of the superconducting tape 4. Before routing, the operator can operate the height adjustment device 5 to cause the electric push rod to drive the cooling tank 2 downward, causing the immersion part 30 to separate from the cooling tank 2, thereby adjusting the cooling tank 2 to a state of being separated from the cooling medium. Therefore, during the threading and routing process, the operator can completely avoid the cooling tank 2, preventing the overall structure of the cooling tank 2 from interfering with the threading and routing operation.

[0063] After completing the threading and installation of the superconducting tape 4, the staff drives the cooling tank 2 upward by operating the electric push rod, prompting the immersion part 30 to be immersed in the cooling tank 2 again, thereby adjusting the cooling tank 2 to switch to the state of being immersed in the cooling medium. At this time, the preliminary preparation work for the installation of the superconducting tape 4 of the measuring equipment is completed.

[0064] During normal measurement, the magnetic detection device 6 is started, and the wiring assembly 3 is started at the same time, driving the superconducting tape 4 to be routed. The superconducting tape 4 is discharged from the pay-off reel, guided by the wire pulley 33 and wound into the pre-inspection routing section. The drying device 36 heats and dries the superconducting tape 4 in the pre-inspection routing section. The superconducting tape 4 is then routed into the detection section in the cooling tank 2. The magnetic detection device 6 detects the superconducting tape 4 in the detection section. After the detection is completed, the superconducting tape 4 continues to be routed and enters the post-inspection routing section. The drying device 36 heats and dries the superconducting tape 4 in the post-inspection routing section. Finally, the winding is entered into the take-up reel for storage.

[0065] During the measurement process, the superconducting tape length measuring device 38 will calculate the routing length of the superconducting tape 4. In addition, if the magnetic detection device 6 or the appearance detection device 34 detects an abnormality, the staff can operate the abnormal point marking device 35 to mark the location of the abnormal point of the current superconducting tape 4, so as to subsequently deal with the problem of the superconducting tape 4.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A device for measuring critical current of a superconducting tape, characterized in that: include: Mounting seat; a cooling trough, the cooling trough being arranged on the mounting seat; a wiring assembly disposed on the mounting seat and configured to mount and drive the superconducting tape for routing; the wiring assembly comprising an immersion portion capable of entering the interior of the cooling tank to guide the superconducting tape in and out of the cooling tank; a magnetic detection device, mounted on the immersion portion; A height adjustment device is connected to the cooling tank and is used to drive the cooling tank to move vertically to switch the state of the immersion part being immersed in and out of the cooling tank.

2. The measuring device according to claim 1, characterized in that: The height adjustment devices are arranged on both sides of the cooling trough.

3. The measuring device according to claim 1, wherein The wiring assembly includes a first wire drum, a second wire drum and a wire pulley; The guide pulley guides the superconducting tape to be routed between the first wire drum and the second wire drum, and a pre-inspection routing section and a post-inspection routing section close to each other are formed between the first wire drum and the second wire drum; The pre-inspection routing segment and the post-inspection routing segment include horizontal segments and vertical segments that are symmetrical to each other.

4. The measuring device according to claim 3, wherein An appearance inspection device for the superconducting tape is installed at at least one of the horizontal sections.

5. The measuring device according to claim 4, characterized in that An abnormal point marking device is installed at at least one of the horizontal sections to mark abnormal points detected by the appearance detection device and / or the magnetic detection device.

6. The measuring device according to claim 5, characterized in that The abnormal point marking device is arranged along the direction of the superconducting tape and is located behind the appearance detection device.

7. The measuring device according to claim 3, characterized in that The vertical section is provided with a drying device shared by the pre-inspection routing section and the post-inspection routing section.

8. The measuring device according to claim 3, wherein The first wire reel is a wire pay-off reel, and the second wire reel is a wire take-up reel; or, the first wire reel is a wire take-up reel, and the second wire reel is a wire pay-off reel.

9. The measuring device according to claim 1, wherein A superconducting tape length measuring device is also installed on the mounting seat, which is used to measure the routing length of the superconducting tape in the wiring assembly.

10. The measuring device according to claim 1, wherein The wiring assembly further comprises a tension meter, which is movably connected to the mounting seat. The mounting seat is further provided with an adjustment assembly for driving the tension meter to move so as to adjust the winding tension of the superconducting tape.

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