A continuous inspection apparatus for superconducting tape

Abstract

This invention relates to the technical field of superconducting material testing, and discloses a continuous testing device for superconducting tape, comprising: a pay-off reel, a take-up reel, a cold head, a heat exchange wheel, an excitation testing device, and several reversing wheels. The reversing wheels guide the superconducting tape to be tested to the heat exchange wheel. The superconducting tape to be tested travels from the pay-off reel to the heat exchange wheel, is cooled by the cold head, and then enters the excitation testing device. The excitation testing device detects the superconducting tape, forming a tested superconducting tape. The tested superconducting tape is then redirected by the reversing wheels and reaches the heat exchange wheel, where it exchanges heat with the superconducting tape to be tested. By overlapping the paths of the superconducting tape before and after testing, solid-state heat exchange occurs between the superconducting tape to be tested and the tested superconducting tape, resulting in rapid temperature recovery.

Description

Technical Field

[0001] This invention relates to the technical field of superconducting material testing, and in particular to a continuous testing device for superconducting tapes. Background Technology

[0002] Currently, the continuous testing equipment for superconducting tapes utilizes non-contact magnetic field measurement technology. By detecting the magnetic field signal generated when current flows through the superconducting tape, the critical current value is deduced. In principle, this avoids the interference of mechanical vibration and noise on measurement accuracy. At the same time, it is suitable for the testing needs of special types of superconducting tapes such as ferromagnetic substrates.

[0003] This technology does not require direct contact with the surface of the superconducting tape and can achieve continuous measurement. Before testing, the superconducting tape needs to be cooled to below the critical temperature, and after testing, the superconducting tape is warmed back to room temperature.

[0004] Cooling of superconducting tapes can be achieved through various methods, such as liquid nitrogen immersion or cryogenic cooling. However, there are generally two methods for reheating superconducting tapes: one is to increase the space for natural reheating, allowing the superconducting tape to fully contact the air and reheat before being stored, but this method significantly increases the size of the equipment; the other is to reduce the tape speed during testing, increasing the contact time between the superconducting tape and the air to achieve heating, but this method significantly reduces testing efficiency. If the reheating is insufficient, the temperature of the superconducting tape will be too low, causing water vapor condensation that can damage the superconducting tape.

[0005] Therefore, how to achieve high-efficiency reheating of superconducting tapes within a relatively small space has become a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0006] The technical problem to be solved by this invention is: how to achieve high-efficiency reheating of superconducting tapes within a relatively small space.

[0007] To address the aforementioned technical problems, this invention provides a continuous testing device for superconducting tape, comprising: a pay-off reel for storing the superconducting tape to be tested; a take-up reel for storing the superconducting tape that has already been tested; a cold head for cooling the superconducting tape to be tested; a heat exchange wheel for transferring heat; an excitation testing device for detecting whether the superconducting tape to be tested has defects; and several reversing wheels for guiding the superconducting tape to be tested to the heat exchange wheel. The superconducting tape to be tested arrives at the heat exchange wheel from the pay-off reel, is then cooled by the cold head, and enters the excitation testing device. The superconducting tape to be tested is then tested by the excitation testing device to form a tested superconducting tape. The tested superconducting tape is then reversed by the reversing wheels and arrives at the heat exchange wheel, where it exchanges heat with the superconducting tape to be tested.

[0008] In one embodiment, the continuous detection device further includes a Dewar, which is a shell structure; the heat exchange wheel, cold head, excitation detection device, and reversing wheel are all located inside the Dewar, and the heat exchange wheel, cold head, and reversing wheel are all rotatably connected to the inner wall of the Dewar; the pay-off reel and take-up reel are located outside the Dewar, and the pay-off reel and take-up reel are rotatably connected to the outer wall of the Dewar, and the superconducting tape to be detected and the superconducting tape that has been detected pass through the side wall of the Dewar to reach the Dewar.

[0009] In one embodiment, the continuous testing device further includes a glue box, which is located at a first position or a second position. The first position is located on the path from the wire feeding reel to the heat exchange wheel, and the second position is located on the path from the excitation testing device to the heat exchange wheel for the superconducting tape that has been tested. The glue box contains low-temperature silica gel and includes an inlet and an outlet. The superconducting tape to be tested or the superconducting tape that has been tested enters the glue box through the inlet to be wetted with low-temperature silica gel and is discharged from the glue box through the outlet.

[0010] In one embodiment, the continuous detection device further includes a first infrared temperature sensor, a second infrared temperature sensor, and a speed controller. The first infrared temperature sensor is installed at a first position, the second infrared temperature sensor is installed at a second position, and the speed controller is used to control the linear speed of the superconducting tape to be detected and the superconducting tape that has been detected based on the temperature difference between the first infrared temperature sensor and the second infrared temperature sensor.

[0011] In one embodiment, the inner wall of the glue box is provided with a plurality of guide structures. The plurality of guide structures are used to guide the superconducting tape to be tested or the superconducting tape that has been tested from the inlet to the bottom of the glue box, and to guide the superconducting tape to be tested or the superconducting tape that has been tested from the bottom of the glue box to the outlet, so as to reduce the friction between the superconducting tape to be tested and the glue box or the superconducting tape that has been tested and the glue box.

[0012] In one embodiment, the inner wall of the glue box is provided with a scraping structure, which includes a spring plate base, a spring plate, a scraping base and a scraping pad. The superconducting tape to be tested or the superconducting tape that has been tested after being impregnated with low-temperature silicone is clamped between the spring plate and the scraping pad.

[0013] In one embodiment, both the squeegee base and the squeegee pad are made of polytetrafluoroethylene.

[0014] In one embodiment, the heat exchange wheel includes a groove; the groove is used to stack the superconducting tape to be tested and the superconducting tape that has been tested, or the superconducting tape to be tested and the superconducting tape that has been tested are distributed on both sides of the groove.

[0015] In one embodiment, the heat exchange wheel includes two grooves, which are used to place the superconducting tape to be tested and the superconducting tape that has already been tested, respectively.

[0016] In one embodiment, the continuous detection device includes several heat exchange wheels, each heat exchange wheel having a groove, with the superconducting tape to be detected and the superconducting tape already detected distributed on both sides of the groove.

[0017] Compared with the prior art, the continuous testing equipment for superconducting tapes of this invention has the following advantages: the superconducting tape to be tested is cooled by a cold head after contacting the heat exchange wheel, and after being tested by an excitation detection device, it is guided to the heat exchange wheel via a reversing wheel. At this time, the heat exchange wheel contains both the superconducting tape to be tested at room temperature and the superconducting tape already tested at a low temperature. When the two come into contact, the temperature of the superconducting tape to be tested decreases towards the low temperature, while the temperature of the superconducting tape already tested rises towards room temperature. This not only reduces the cooling requirement of the superconducting tape to be tested, but also reduces the temperature recovery requirement of the superconducting tape already tested. Since both are solid surfaces in contact, the heat exchange efficiency is high. Furthermore, due to multiple reversals and reduced dependence on air temperature recovery, the overall equipment size is significantly reduced. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a continuous detection device for superconducting tapes, as exemplarily shown in an embodiment of the present invention.

[0019] Figure 2 This is a schematic diagram of the structure of a heat exchange wheel in a continuous detection device, as exemplarily shown in an embodiment of the present invention.

[0020] Figure 3 This is a schematic diagram of another heat exchange wheel structure of a continuous detection device exemplarily shown in an embodiment of the present invention.

[0021] Figure 4 This is a simplified layout diagram of multiple heat exchange wheels in a continuous detection device, as exemplarily shown in an embodiment of the present invention.

[0022] Figure 5 This is a schematic diagram of the structure of the glue box of the continuous detection device exemplarily shown in an embodiment of the present invention.

[0023] Figure label: 1. Continuous testing equipment; 2. Superconducting tape; 11. Pay-off reel; 12. Take-up reel; 13. Cold head; 14. Heat exchange wheel; 15. Excitation detection device; 16. Reversing wheel; 17. Dewar; 18. Glue box; 19. First infrared temperature sensor; 20. Second infrared temperature sensor; 21. Superconducting tape to be tested; 22. Superconducting tape already tested; 101. First position; 102. Second position; 181. Low-temperature silicone; 182. Inlet; 183. Outlet; 184. Guide structure; 185. Glue scraping structure; 1851. Spring plate base; 1852. Spring plate; 1853. Glue scraping base; 1854. Glue scraping pad. Detailed Implementation

[0024] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0025] It should be understood that although the terms first, second, third, etc., may be used in this invention to describe various structures, these structures should not be limited to these terms. These terms are only used to distinguish structures of the same type from each other. For example, a first structure may also be referred to as a second structure without departing from the scope of this invention, and similarly, a second structure may also be referred to as a first structure. Depending on the context, the word "if" as used herein can be interpreted as "when," "when," or "in response to determination."

[0026] Currently, the continuous testing equipment for superconducting tapes utilizes non-contact magnetic field measurement technology. By detecting the magnetic field signal generated when current flows through the superconducting tape, the critical current value is deduced. In principle, this avoids the interference of mechanical vibration and noise on measurement accuracy. At the same time, it is suitable for the testing needs of special types of superconducting tapes such as ferromagnetic substrates.

[0027] This technology does not require direct contact with the surface of the superconducting tape and can achieve continuous, non-destructive measurement. Before testing, the superconducting tape needs to be cooled to below the critical temperature. After testing, the superconducting tape is then warmed back to room temperature. If the warming is insufficient, the temperature of the superconducting tape will be too low, causing water vapor condensation, which will damage the superconducting tape.

[0028] There are many available technologies for cooling superconducting tapes, such as liquid nitrogen immersion or cooling with a refrigerator. However, there are generally two methods for warming up superconducting tapes: one is to increase the space for natural warming, allowing the superconducting tape to fully contact the air to warm up before storing it, but this method greatly increases the size of the equipment; the other is to reduce the tape speed during testing, but this method will significantly reduce the testing efficiency.

[0029] Both methods have significant drawbacks, as they cannot achieve a balance between space and reheating efficiency.

[0030] To balance the issues of space and reheating efficiency, that is, to achieve high-efficiency reheating of superconducting tape 2 within a relatively small space, such as Figure 1 As shown in the preferred embodiment of the present invention, a continuous testing device 1 for superconducting tape 2 includes: a pay-off reel 11, a take-up reel 12, a cold head 13, a heat exchange wheel 14, an excitation testing device 15, and a plurality of reversing wheels 16.

[0031] The pay-off reel 11 is used to store the superconducting tape 21 to be tested, the take-up reel 12 is used to store the superconducting tape 22 that has been tested, the cold head 13 is used to cool the superconducting tape 21 to be tested; the heat exchange wheel 14 is used to transfer heat, the excitation detection device 15 is used to detect whether there are defects in the superconducting tape 21 to be tested, and several reversing wheels 16 are used to guide the superconducting tape 22 that has been tested to the heat exchange wheel 14.

[0032] In this process, the superconducting tape 21 to be tested arrives at the heat exchange wheel 14 from the pay-off reel 11. After being cooled by the cold head 13, the superconducting tape 21 enters the excitation detection device 15. The superconducting tape 21 to be tested is detected by the excitation detection device 15 to form the tested superconducting tape 22. The tested superconducting tape 22 is reversed by the reversing wheel 16 and arrives at the heat exchange wheel 14, where it exchanges heat with the superconducting tape 21 to be tested.

[0033] Guided by several commutator wheels 16, the paths of the superconducting tape 2 before and after testing are overlapped, and solid heat exchange occurs between the superconducting tape 21 to be tested and the superconducting tape 22 that has been tested. This is more efficient than air reheating, which is equivalent to quickly transferring the heat of the superconducting tape 21 to be tested at room temperature to the superconducting tape 22 that has been tested, thus achieving rapid reheating of the superconducting tape 22 that has been tested.

[0034] Because of this direct or indirect contact method, it is more efficient and therefore does not require as much space to increase the contact area as air reheating, making it suitable for scenarios with limited space.

[0035] Furthermore, the heat from the superconducting tape 21 to be tested is transferred to the superconducting tape 22 that has already been tested. At the same time, the superconducting tape 22 that has already been tested plays a role in pre-cooling the superconducting tape 2 at room temperature. After the heat exchange, the temperature of the superconducting tape 21 to be tested is already lower than room temperature. When it comes into contact with the cold head 13, the dependence on the cold head 13 for cooling is reduced. Therefore, the contact time between the cold head 13 and the superconducting tape 2 can be appropriately reduced, which can improve the operating speed of the cold head 13 and the overall cooling. This is a beneficial effect that many other technical solutions do not have.

[0036] It is understandable that during the testing process, the superconducting tape 21 to be tested and the superconducting tape 22 already tested can be part of the superconducting tape 2. Before testing, the superconducting tape 21 to be tested can refer to the complete superconducting tape 2, and after testing, the superconducting tape 22 already tested can refer to the complete superconducting tape 2.

[0037] To further improve the heat exchange effect, in one embodiment of the present invention, such as... Figure 1As shown, the continuous testing device 1 also includes a Dewar 17, which is a shell structure. The heat exchange wheel 14, cold head 13, excitation detection device 15, and reversing wheel 16 are all located inside the Dewar 17, and the heat exchange wheel 14, cold head 13, and reversing wheel 16 are all rotatably connected to the inner wall of the Dewar 17. The pay-off reel 11 and take-up reel 12 are located outside the Dewar 17, and the pay-off reel 11 and take-up reel 12 are rotatably connected to the outer wall of the Dewar 17. The superconducting tape 21 to be tested and the superconducting tape 22 already tested pass through the side wall of the Dewar 17 to reach the Dewar 17.

[0038] This technical solution isolates the room temperature environment from the low temperature environment. The superconducting tape 2 wound inside the pay-off reel 11 and take-up reel 12 is at room temperature, while other structures operate at other temperatures. By enclosing these structures with Dewar 17, a heat exchange environment with a certain degree of insulation and sealing can be formed. In this heat exchange environment, the amount of heat exchange between the tested superconducting tape 22 and the superconducting tape 21 to be tested is controllable. Moreover, after the cold head 13 cools down the superconducting tape 21 to be tested, the temperature of the superconducting tape 2 is no longer affected by the external environment, and the temperature is more accurate.

[0039] The dimensions of Dewar 17 are related to the arrangement of heat exchange wheel 14, cold head 13, excitation detection device 15, and reversing wheel 16, and are set according to actual needs. This invention does not impose specific limitations on this.

[0040] It is understandable that, due to the requirements of the tape transport, the superconducting tape 2 on the pay-off reel 11 and the take-up reel 12 both need to pass through the Dewar 17. Therefore, the Dewar 17 in this invention does not require an absolute vacuum.

[0041] As is well known, the thermal conductivity of air is much lower than that of solids such as metals. Therefore, in this type of contact thermal conduction, it is necessary to minimize the amount of air entering the contact gaps.

[0042] Therefore, such as Figure 1 and Figure 5 As shown, in one embodiment of the present invention, the continuous detection device 1 further includes a glue box 18, which is located at a first position 101 or a second position 102. The first position 101 is located on the path from the wire feeding reel 11 to the heat exchange wheel 14, and the second position 102 is located on the path of the detected superconducting tape 22 from the excitation detection device 15 to the heat exchange wheel 14.

[0043] The box 18 contains a low-temperature silicone 181. The box 18 includes an inlet 182 and an outlet 183. The superconducting tape 21 to be tested or the superconducting tape 22 that has been tested enters the box 18 through the inlet 182 to wet the low-temperature silicone 181, and is then discharged from the box 18 through the outlet 183.

[0044] It is understandable that the first position 101 and the second position 102 are position ranges, not specific points. When moving within a reasonable range, it can still be considered to belong to the first position 101 or the second position 102.

[0045] Through the above embodiments, the low-temperature silicone 181 can maintain a certain fluidity at a low temperature. Therefore, both the superconducting tape 21 to be tested and the superconducting tape 22 that has been tested can be impregnated with a layer of low-temperature silicone 181 with fluidity.

[0046] Because the superconducting tape 2 is covered with a layer of low-temperature silicone 181, it can fill the contact gap between solids when it comes into contact with another superconducting tape 2 or heat exchange wheel 14. Even if the surface is rough, it can perfectly fill the gap, reduce the generation of air bubbles, and improve the heat exchange efficiency of the superconducting tape 2 and heat exchange wheel 14 to a certain extent.

[0047] In another embodiment of the present invention, the continuous detection device 1 further includes a first infrared temperature sensor 19, a second infrared temperature sensor 20, and a speed controller. The first infrared temperature sensor 19 is installed at a first position 101, the second infrared temperature sensor 20 is installed at a second position 102, and the speed controller is used to control the linear speed of the superconducting tape 21 to be detected and the superconducting tape 22 that has been detected based on the temperature difference between the first infrared temperature sensor 19 and the second infrared temperature sensor 20.

[0048] Understandably, the speed controller is selected based on the type of actuator, which is not shown in the attached diagram.

[0049] With the above embodiment, temperature sensors are installed at the first position 101 and the second position 102 respectively, which can monitor the temperature of the superconducting tape 21 to be tested and the temperature of the superconducting tape 22 that has been tested, respectively. When the temperature difference fluctuates, for example, if the temperature difference exceeds the safe temperature difference, the temperature difference can be reduced by reducing the tape speed so as to reduce the damage to the superconducting tape 2 caused by the excessive temperature difference.

[0050] It is understood that the first position 101 and the second position 102 still represent the installation range. In the exemplary embodiment shown in the figure, in order to ensure the accuracy of the measurement, both the first infrared temperature sensor 19 and the human infrared temperature sensor are positioned close to the heat exchange wheel 14. In other embodiments, the distance between any temperature sensor and the heat exchange wheel 14 can also be adjusted appropriately.

[0051] Using an infrared temperature sensor, temperature measurement can be achieved without contact with the superconducting tape 2. The superconducting tape 2 is relatively fragile at very low temperatures. Compared with contact-based temperature measurement schemes, the infrared measurement method in this invention can reduce contact with the superconducting tape 2, thereby avoiding structural damage to the superconducting tape 2.

[0052] The superconducting tape 2 is relatively fragile at low temperatures. Therefore, the power required to drive the pay-off reel, take-up reel, and heat exchange reel 14 is relatively small to avoid excessive pulling on the superconducting tape 2. As a result, the power is relatively small. Therefore, when excessive friction occurs, it will cause the entire device to jam and easily lead to wear on the superconducting tape 2.

[0053] Therefore, such as Figure 5 As shown, in a further embodiment of the present invention, a plurality of guide structures 184 are provided on the inner wall of the glue box 18. The plurality of guide structures 184 are used to guide the superconducting tape 21 to be tested or the superconducting tape 22 already tested from the inlet 182 to the bottom of the glue box 18, and guide the superconducting tape 21 to be tested or the superconducting tape 22 already tested from the bottom of the glue box 18 to the outlet 183, so as to reduce the friction between the superconducting tape 21 to be tested and the glue box 18 or the superconducting tape 22 already tested and the glue box 18.

[0054] By setting the guide structure 184, the position of the superconducting tape 2 in the glue box 18 can be restricted, so as to reduce the friction between the superconducting tape 2 and the glue box 18.

[0055] In a further embodiment, the guide structure 184 can be positioned below the liquid surface of the low-temperature silicone 181. In this case, the guide structure 184 is fully lubricated by the low-temperature silicone 181, which can further reduce the frictional resistance between the guide structure 184 and the superconducting tape 2.

[0056] The guide structure 184 can be a groove-shaped structure and can be bent at a specific angle as required to guide the superconducting tape 2 from the inlet 182 of the box 18 to below the page of the low-temperature silicone 181, then guide the superconducting tape 2 to make full contact with the low-temperature silicone 181, and finally guide the superconducting tape 2 to be discharged from the outlet 183. Multiple guide structures 184 can be set on the guide path.

[0057] Setting a low-temperature silicone 181 inside the silicone box 18 can improve the heat exchange efficiency to a certain extent. However, when the silicone layer is thick, the solid structure that could originally be in direct contact may also be isolated by the silicone layer, resulting in a decrease in heat exchange efficiency instead of an increase.

[0058] Therefore, as Figure 5As shown, in a further embodiment of the present invention, the inner wall of the glue box 18 is provided with a scraping structure 185. The scraping structure 185 includes a spring plate base 1851, a spring plate 1852, a scraping base 1853, and a scraping pad 1854. The superconducting tape 21 to be tested or the superconducting tape 22 that has been tested after being wetted with low-temperature silicone 181 is clamped between the spring plate 1852 and the scraping pad 1854.

[0059] A spring sheet 1852 provides continuous elasticity to press the superconducting tape 2 against the scraper pad 1854. This allows excess low-temperature silicone 181 to be hung off during the tape's exit process, ensuring that only the low-temperature silicone 181 remains in the recesses of the superconducting tape 2. This ensures that the low-temperature silicone 181 is used only to fill the contact gaps, rather than isolating the originally contactable structure, thus maximizing thermal conductivity.

[0060] Understandably, the specifications of the spring sheet 1852 and the scraper pad 1854 can be freely adjusted based on the thickness of the superconducting tape 2, surface roughness, flowability of the low-temperature silicone 181, or other parameters.

[0061] In a further embodiment, both the squeegee base 1853 and the squeegee pad 1854 can be made of polytetrafluoroethylene (PTFE). PTFE has an extremely low coefficient of friction and excellent non-stick properties, resulting in less residual low-temperature silicone 181 after squeegeeing. It also has a wide operating temperature range and does not cause significant deformation when in contact with the low-temperature silicone 181 or the superconducting tape 2.

[0062] In this invention, as long as there is contact with solid structures, the heat exchange efficiency is higher than that of air reheating. These contact forms are further divided into various forms such as direct contact and indirect contact.

[0063] like Figure 2 As shown, in one embodiment, the heat exchange wheel 14 includes a groove. The groove is used to stack the superconducting tape 21 to be tested and the superconducting tape 22 that has been tested, or the superconducting tape 21 to be tested and the superconducting tape 22 that has been tested are distributed on both sides of the groove.

[0064] This single-slot design includes both direct and indirect contact methods, such as... Figure 2 As shown, the groove is used to stack the superconducting tape 21 to be tested and the superconducting tape 22 that has been tested. The superconducting tapes 21 stacked together are in direct contact. The superconducting tape 21 to be tested assists the superconducting tape 22 that has been tested in reheating, and the superconducting tape 22 that has been tested assists the superconducting tape 21 to be tested in cooling down, which can significantly improve the heat exchange efficiency.

[0065] And such Figure 4As shown, in the single-groove scheme, the superconducting tape 21 to be tested and the superconducting tape 22 already tested can be distributed on both sides of the groove, for example... Figure 4 This demonstrates the distribution pattern on both the top and bottom sides. In this two-sided distribution, the superconducting tape 21 to be tested and the superconducting tape 22 already tested form indirect contact through the heat exchange wheel 14. The heat conduction still occurs through the solid, but is transferred through the heat exchange wheel 14. Its advantage is that it can cope with the larger temperature difference between the superconducting tape 21 to be tested and the superconducting tape 22 already tested, and the specific heat capacity of the heat exchange wheel 14 can play a buffering role to a certain extent.

[0066] Moreover, in this indirect contact scheme, there is no direct friction between the superconducting tape 21 to be tested and the superconducting tape 22 that has been tested, thus reducing the need for protection of specific surfaces.

[0067] Based on this, such as Figure 4 As shown, in one embodiment, the continuous detection device 1 includes a plurality of heat exchange wheels 14, each heat exchange wheel 14 including a groove, with the superconducting tape 21 to be detected and the superconducting tape 22 already detected distributed on both sides of the groove.

[0068] This single-slot design can be expanded into a multi-slot design to further increase the contact area and the number of contact times, achieving multi-stage heat exchange and better temperature recovery.

[0069] In addition, such as Figure 3 As shown, in another embodiment of the present invention, the heat exchange wheel 14 includes two grooves, which are respectively used to place the superconducting tape 21 to be tested and the superconducting tape 22 that has been tested.

[0070] The dual-slot design combines the advantages of stacking and side-distribution in a single-slot design. It avoids wear and, due to the surrounding area, has a larger contact area, resulting in higher heat transfer efficiency.

[0071] This invention provides a continuous detection device 1 for superconducting tape 2. It avoids mechanical vibration interference through non-contact magnetic field measurement technology, and uses a Dewar 17 structure to isolate room temperature and low-temperature environments. High-efficiency heat exchange is achieved using low-temperature silicone 181 and a guide structure 184 connected to a cartridge 18. The device optimizes the contact method through a heat exchange wheel 14 (such as a single or double groove), reducing the air contact area and improving heat conduction efficiency. An infrared temperature sensor and the guide structure 184 further monitor and control the heat exchange parameters, reducing the risk of heat damage to the superconducting tape 2. This comprehensive design optimizes space utilization while balancing detection accuracy and recovery efficiency, effectively solving the problem of insufficient air recovery in traditional methods.

[0072] By improving the layout and sealing structure of the heat exchange wheel 14, heat exchange efficiency and space utilization are effectively enhanced. Combined with an infrared monitoring and guidance system, temperature control accuracy and friction reduction are optimized. The Dewar 17 isolation technology is used to achieve environmental and thermal isolation, ensuring the stable performance of the superconducting tape 2 at low temperatures. This technical solution integrates space optimization, efficiency improvement, and accuracy assurance, significantly improving the continuous detection efficiency of the superconducting tape 2 and reducing damage to it.

[0073] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A continuous testing device for superconducting tapes, characterized in that, include: A wire feeding reel (11) is used to store the superconducting tape (21) to be tested. Take-up reel (12), which is used to store the tested superconducting tape (22); A cold head (13) is used to cool the superconducting tape (21) to be tested; Heat exchange wheel (14), the heat exchange wheel (14) is used to transfer heat; Excitation detection device (15), the excitation detection device (15) is used to detect whether there are defects in the superconducting tape (21) to be tested; A plurality of commutator wheels (16) are provided for guiding the tested superconducting tape (22) to the heat exchange wheel (14); The superconducting tape (21) to be tested arrives at the heat exchange wheel (14) from the wire feeding reel (11). The superconducting tape (21) to be tested is then cooled by the cold head (13) and enters the excitation detection device (15). The superconducting tape (21) to be tested is detected by the excitation detection device (15) to form the detected superconducting tape (22). The detected superconducting tape (22) is reversed by the reversing wheel (16) and arrives at the heat exchange wheel (14) to exchange heat with the superconducting tape (21) to be tested at the heat exchange wheel (14).

2. The continuous detection device according to claim 1, characterized in that, The continuous detection device (1) also includes a Dewar (17), which is a shell structure; The heat exchange wheel (14), the cold head (13), the excitation detection device (15) and the reversing wheel (16) are all located inside the Dewar (17), and the heat exchange wheel (14), the cold head (13) and the reversing wheel (16) are all rotatably connected to the inner wall of the Dewar (17); The pay-off reel (11) and the take-up reel (12) are located outside the Dewar (17), and both the pay-off reel (11) and the take-up reel (12) are rotatably connected to the outer wall of the Dewar (17). The superconducting tape to be tested (21) and the superconducting tape already tested (22) pass through the side wall of the Dewar (17) and reach inside the Dewar (17).

3. The continuous detection device according to claim 1, characterized in that, The continuous testing device (1) further includes a glue box (18), which is located at a first position (101) or a second position (102). The first position (101) is located on the path from the wire feeding reel (11) to the heat exchange wheel (14), and the second position (102) is located on the path of the tested superconducting tape (22) from the excitation testing device (15) to the heat exchange wheel (14). The glue box (18) is provided with low-temperature silicone (181). The glue box (18) includes an inlet (182) and an outlet (183). The superconducting tape (21) to be tested or the superconducting tape (22) that has been tested enters the glue box (18) through the inlet (182) to wet the low-temperature silicone (181), and is exported from the glue box (18) through the outlet (183).

4. The continuous detection device according to claim 3, characterized in that, The continuous detection device (1) further includes a first infrared temperature sensor (19), a second infrared temperature sensor (20), and a speed controller. The first infrared temperature sensor (19) is installed at the first position (101), and the second infrared temperature sensor (20) is installed at the second position (102). The speed controller is used to control the linear speed of the superconducting tape (21) to be detected and the superconducting tape (22) that has been detected based on the temperature difference between the first infrared temperature sensor (19) and the second infrared temperature sensor (20).

5. The continuous detection device according to claim 3, characterized in that, The inner wall of the glue box (18) is provided with a plurality of guide structures (184). The plurality of guide structures (184) are used to guide the superconducting tape (21) to be tested or the superconducting tape (22) already tested from the inlet (182) to the bottom of the glue box (18), and guide the superconducting tape (21) to be tested or the superconducting tape (22) already tested from the bottom of the glue box (18) to the outlet (183), so as to reduce the friction between the superconducting tape (21) to be tested and the glue box (18) or the superconducting tape (22) already tested and the glue box (18).

6. The continuous detection device according to claim 3, characterized in that, The inner wall of the glue box (18) is provided with a scraping structure (185). The scraping structure (185) includes a spring plate base (1851), a spring plate (1852), a scraping base (1853), and a scraping pad (1854). The superconducting tape (21) to be tested or the superconducting tape (22) that has been tested is sandwiched between the spring plate (1852) and the scraping pad (1854) after being soaked in the low-temperature silicone (181).

7. The continuous detection device according to claim 6, characterized in that, Both the scraper base (1853) and the scraper pad (1854) are made of polytetrafluoroethylene.

8. The continuous detection device according to claim 1, characterized in that, The heat exchange wheel (14) includes a groove; the groove is used to stack the superconducting tape (21) to be tested and the superconducting tape (22) that has been tested, or the superconducting tape (21) to be tested and the superconducting tape (22) that has been tested are distributed on both sides of the groove.

9. The continuous detection device according to claim 1, characterized in that, The heat exchange wheel (14) includes two grooves, which are used to place the superconducting tape (21) to be tested and the superconducting tape (22) that has been tested, respectively.

10. The continuous detection device according to claim 1, characterized in that, The continuous testing device (1) includes several heat exchange wheels (14), each heat exchange wheel (14) having a groove, and the superconducting tape to be tested (21) and the superconducting tape already tested (22) are distributed on both sides of the groove.

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