Continuous nondestructive testing device for high-temperature superconducting packaging strip

Abstract

The utility model belongs to the technical field of superconducting packaging tape detection, and particularly relates to a continuous nondestructive testing device for a high-temperature superconducting packaging tape, which comprises a bottom plate, two mounting columns are fixed at the top of the bottom plate, and rotating columns are rotationally connected onto the two mounting columns. A synchronous rotating mechanism is installed between the two rotating columns, a tape unwinding wheel and a tape winding wheel are fixed to the ends, away from the mounting column, of the two rotating columns correspondingly, superconducting packaging tapes are wound around the outer sides of the tape unwinding wheel and the tape winding wheel correspondingly, and a meter counter wheel is installed at the top of the bottom plate; the length counter wheel is in contact with the superconducting packaging tape, a detection assembly is arranged on the bottom plate and located between the tape unwinding wheel and the tape winding wheel, and the detection assembly is used for detecting the superconducting packaging tape. According to the utility model, on the premise that the packaging tape is not damaged, full-automatic and whole-course continuous dynamic detection of packaging quality and width dimension can be realized, and dead pixel positions can be marked.

Description

Technical Field

[0001] The utility model belongs to the technical field of superconducting packaging tape detection, and in particular relates to a continuous nondestructive detection device for high-temperature superconducting packaging tapes. Background Art

[0002] High-temperature superconducting packaging tape is a composite material composed of a high-temperature superconducting coating conductor (YBCO) and a metal tape (such as a copper tape or a stainless steel tape). It has excellent physical properties such as a transition temperature higher than liquid nitrogen and a high critical current density. It is widely used in the fields of maglev trains, nuclear magnetic resonance, metal smelting, military mine sweeping, controlled nuclear fusion, etc.

[0003] In order to improve the mechanical strength and protection performance of high-temperature superconducting coated conductors, they are generally packaged, that is, the upper and lower sides of the superconducting tape are soldered with copper tape or stainless steel tape to form a layered structure. The packaging quality of high-temperature superconducting packaging tape directly affects its electrical performance and service life, so it is necessary to effectively detect and evaluate it. At present, there are mainly the following detection methods for high-temperature superconducting packaging tapes:

[0004] Visual inspection: Use the naked eye or a magnifying glass to observe the appearance of the packaging strip to check for defects such as cracks, pores, false solder joints, poor solder joints, poor tinning, and slag inclusions, as well as dimensional parameters such as the width, thickness, and flatness of the packaging strip. This method is simple to operate, but can only detect surface defects, not internal defects, and has low detection efficiency, and cannot achieve full-process continuous detection;

[0005] Tearing method: Fix the two ends of the packaging tape with a clamp, apply tension along the width direction of the superconducting tape to tear the packaging tape, and then observe the morphology of the torn surface to judge the packaging strength and packaging quality of the packaging tape. This method can detect internal defects, but it is highly destructive and the packaging tape cannot be reused. In addition, the detection efficiency is low and it is impossible to achieve full-process continuous detection.

[0006] In summary, the existing detection methods for high-temperature superconducting packaging tapes have the following technical problems: it is not convenient to effectively detect internal defects of the packaging tapes without destroying the packaging tapes, and it is impossible to realize full-automatic, full-process continuous dynamic detection of the packaging tapes to improve detection efficiency and accuracy;

[0007] Therefore, the art is in urgent need of a new high-temperature superconducting packaging tape detection device to solve the above technical problems. Utility Model Content

[0008] The utility model aims to provide a continuous nondestructive testing device for high-temperature superconducting packaging strips, which can realize full-automatic, full-process continuous dynamic testing of packaging quality and width dimensions and mark bad point positions without destroying the packaging strips.

[0009] The technical solution adopted by the utility model is as follows:

[0010] A continuous nondestructive testing device for high-temperature superconducting packaging strips comprises a bottom plate, two mounting posts are fixed on the top of the bottom plate, and the two mounting posts are rotatably connected with rotating posts, and a synchronous rotating mechanism is installed between the two rotating posts, and a tape unwinding wheel and a tape taking-up wheel are respectively fixed at one end of the two rotating posts away from the mounting posts;

[0011] The outer sides of the unwinding wheel and the take-up wheel are both wound with superconducting packaging tapes, a meter wheel is installed on the top of the bottom plate, and the meter wheel is in contact with the superconducting packaging tape, a detection component is arranged on the bottom plate and between the unwinding wheel and the take-up wheel, the detection component is used to detect the superconducting packaging tape, the detection component includes a mounting frame fixed on the top of the bottom plate, an X-ray emitter is installed on the top of the mounting frame, a marker is also installed on the top of the mounting frame, a fixing plate is fixed on one side of the mounting frame located at the bottom of the superconducting packaging tape, and a ray detector is arranged on the top of the fixing plate;

[0012] The bottom plate is also provided with:

[0013] An image processor, used for receiving the electrical signal from the radiation detector and converting it into a digital image;

[0014] An image analyzer for analyzing the digital image generated by the image processor;

[0015] A defect identifier, which is used to receive the analysis results of the image analyzer, and identify and classify the defects of the superconducting packaging tape according to the preset defect type and level, and record the discovery position;

[0016] A defect display, used to display the identification result of the defect identifier and present it to the operator in the form of graphics or text;

[0017] The feedback controller is used to receive the recognition results of the defect identifier and send control signals to the packaging production equipment according to the preset control strategy to adjust the production parameters in real time, correct the problem and prevent the continued production of unqualified products;

[0018] The image processor comprises:

[0019] A / D converter, used to convert the electrical signal of the X-ray receiver into a digital signal;

[0020] A memory for storing the digital signal of the A / D converter;

[0021] The image generator is used for generating a digital image according to the digital signal in the memory.

[0022] A fixing tube is fixed on the top of the bottom plate, a sliding column is slidably connected to the inner side of the fixing tube, a second motor is installed on the inner side of the fixing tube and at the bottom of the sliding column, a threaded rod is fixed to the output end of the second motor, and a mounting groove corresponding to the threaded rod is provided on the inner side of the sliding column, and the threaded rod is threadedly connected to the mounting groove;

[0023] A tension wheel is installed on the top of the sliding column, a fixing bar is fixed on one side of the fixing tube, and a cleaning mechanism is installed on the top of the fixing bar. The cleaning assembly is used to clean the outer surface of the superconducting packaging tape.

[0024] The cleaning mechanism comprises a mounting plate fixed to the top of the fixing strip, and a cleaning assembly is installed outside the mounting plate and located at the upper and lower parts of the superconducting packaging tape;

[0025] The cleaning assembly includes two rotating wheels rotatably connected to the interior of the mounting plate, and the two rotating wheels are connected by a transmission belt;

[0026] Gears are fixed on the outer sides of two adjacent rotating wheels in the upper and lower cleaning components, and the two gears are meshed and connected. A third motor is also installed on the outer side of the mounting plate, and the output end of the third motor is fixedly connected to one of the rotating wheels.

[0027] A scraping block is slidably connected inside the mounting plate and at a position opposite to the two transmission belts. The scraping block is in contact with the transmission belt and is used to clean the gear.

[0028] A support bar is fixed inside the mounting plate at a position corresponding to the scraping block.

[0029] The synchronous rotation mechanism includes a rotating shaft fixed on the outside of the two rotating columns, and the two rotating shafts are connected by a transmission belt. A first motor is installed on one of the mounting columns, and the output end of the first motor is connected to the rotating shaft on the mounting column.

[0030] A detection method for a high-temperature superconducting packaging strip continuous nondestructive testing device, which is applicable to the detection device proposed above, and comprises the following steps:

[0031] Step 1: Start the first motor to drive the pay-out wheel to pay out the superconducting packaging tape, and the take-up wheel to wind the superconducting packaging tape;

[0032] Step 2: tensioning the superconducting packaging tape by a tension wheel;

[0033] Step 3: starting the third motor so that the output end of the third motor drives the transmission belt to clean the superconducting packaging belt;

[0034] Step 4: Irradiate the superconducting packaging tape through an X-ray emitter, and the irradiated image is transmitted to the outside through a ray detector;

[0035] Step 5: Use the marker to eject unqualified marking points.

[0036] The technical effects achieved by the utility model are:

[0037] The utility model utilizes the penetrating property of X-rays to perform transmission or reflection imaging of the packaging strip, and analyzes the internal structure and defects of the packaging strip based on the imaging results. The method can detect internal defects and can realize fully automatic and continuous dynamic detection of packaging quality and width dimensions and mark the position of bad points without destroying the packaging strip, thus avoiding the situation where manual detection can only detect the two ends of a long strip and cannot make quality judgment on the whole strip. Moreover, the detection results can be fed back to production to adjust the production links in real time. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0039] Figure 2 It is a front view of the whole of the utility model;

[0040] Figure 3 It is a schematic diagram of the structure between the belt pulley, the superconducting packaging belt and the X-ray emitter in the utility model;

[0041] Figure 4 It is a schematic diagram of the structure between the sliding column, the fixing bar and the threaded rod in the utility model;

[0042] Figure 5 This utility model Figure 4 The enlarged view of point A in the middle;

[0043] Figure 6 It is a schematic diagram of the structure between the third motor, the scraping block and the gear in the utility model;

[0044] Figure 7 It is a schematic diagram of the structure among the copper strip, the solders on both sides and the internal superconducting strip in the utility model.

[0045] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0046] 1. Bottom plate; 2. Mounting column; 3. Rotating column; 4. Transmission belt strip; 5. Unwinding pulley; 6. First motor; 7. Marker; 8. Superconducting packaging tape; 9. Meter wheel; 10. Tension wheel; 11. Mounting frame; 12. Fixed plate; 13. X-ray emitter; 14. Take-up pulley; 15. Radiation detector; 16. Fixed tube; 17. Sliding column; 18. Second motor; 19. Threaded rod; 20. Mounting groove; 21. Fixed strip; 22. Mounting plate; 23. Rotating wheel; 24. Transmission belt; 25. Gear; 26. Third motor; 27. Support bar; 28. Scraping block; 29. ​​Copper tape; 30. Solder; 31. Internal superconducting tape. DETAILED DESCRIPTION

[0047] In order to make the purpose and advantages of the utility model more clear, the utility model is specifically described in combination with the following embodiments. It should be understood that the following text is only used to describe one or several specific implementations of the utility model, and does not strictly limit the protection scope of the specific request of the utility model.

[0048] Embodiment 1:

[0049] Please refer to the attached Figure 1-7 As shown, a continuous nondestructive testing device for high-temperature superconducting packaging strips includes a bottom plate 1, which is made of metal as a whole, and the height of the bottom plate 1 is at least 30CM for soldering on both sides to prevent impurities on the ground from affecting the mechanisms and devices on the bottom plate 1, and the bottom plate 1 can be made of metal such as steel, two mounting columns 2 are fixed on the top of the bottom plate 1, and the two mounting columns 2 are rotatably connected to rotating columns 3, and a synchronous rotating mechanism is installed between the two rotating columns 3, and the ends of the two rotating columns 3 away from the mounting columns 2 are respectively fixed with a tape unwinding wheel 5 and a tape taking-up wheel 14;

[0050] The synchronous rotation mechanism includes a rotating shaft fixed on the outside of two rotating columns 3, and the two rotating shafts are connected by a transmission belt 4, a first motor 6 is installed on one of the mounting columns 2, and a protective cover is installed on the mounting column 2, the protective cover is used to protect the first motor 6 to prevent the first motor 6 from being damaged due to external impact or other situations, and the output end of the first motor 6 is connected to the rotating shaft on the mounting column 2;

[0051] The outer sides of the unwinding wheel 5 and the taking-up wheel 14 are both wound with a superconducting packaging tape 8;

[0052] The component of the superconducting packaging tape 8 is that an internal superconducting tape 31 is arranged inside, and copper tapes 29 are arranged on both the upper and lower sides of the internal superconducting tape 31, and the left and right sides of the internal superconducting tape 31 are arranged to be packaged by solder 30, so that the arrangement of the solder 30 and the copper tape 29 can seal and package the internal superconducting tape 31;

[0053] When the first motor 6 is started, the unwinding wheel 5 and the take-up wheel 14 can be driven to rotate, so that the unwinding wheel 5 unwinds the superconducting package tape 8, and the take-up wheel 14 winds the tape. A meter wheel 9 is installed on the top of the bottom plate 1, and the meter wheel 9 is in contact with the superconducting package tape 8. The meter wheel 9 is used to measure the movement distance of an object. It consists of a wheel body and an encoder. The wheel body is connected to the movement of the measured object to record the movement distance of the object, and the encoder is used to convert the movement of the meter wheel into an electrical signal for measurement and control. The meter wheel 9 is a prior art, and the present application will not repeat it here.

[0054] A detection component is arranged on the bottom plate 1 and between the unwinding wheel 5 and the taking-up wheel 14, and the detection component is used to detect the superconducting packaging tape 8;

[0055] The detection assembly includes a mounting frame 11 fixed on the top of the base plate 1, and an X-ray emitter 13 is installed on the top of the mounting frame 11. The X-ray emitter 13 is used to emit X-rays, and X-rays are electromagnetic waves with a very short wavelength. They can penetrate some substances, but are absorbed or scattered by other substances. The principle is to use accelerated electrons to collide with metal targets. During the collision, the electrons suddenly decelerate, and the kinetic energy they lose will be released in the form of photons, so that the internal structure of the metal can be detected. This is an existing technology, and this application will not repeat it here.

[0056] A marker 7 is also installed on the top of the mounting frame 11. The marker 7 is used to shoot out a marker, thereby indicating that a certain part of the superconducting packaging tape 8 is unqualified. A fixing plate 12 is fixed on one side of the mounting frame 11 located at the bottom of the superconducting packaging tape 8. A ray detector 15 is arranged on the top of the fixing plate 12. The basic principle of the ray detector 15 is to convert the energy excited by the ray into an electrical signal, amplify and process the signal by electronic means, and finally realize the detection and measurement of the ray. The ray detector 15 is also an existing technology, and will not be described in detail here.

[0057] A fixing tube 16 is fixed on the top of the bottom plate 1, a sliding column 17 is slidably connected to the inner side of the fixing tube 16, a second motor 18 is installed on the inner side of the fixing tube 16 and at the bottom of the sliding column 17, a threaded rod 19 is fixed to the output end of the second motor 18, and a mounting groove 20 corresponding to the threaded rod 19 is provided on the inner side of the sliding column 17, and the threaded rod 19 is threadedly connected to the mounting groove 20;

[0058] A tension wheel 10 is installed on the top of the sliding column 17, and the tension wheel 10 rotates on the sliding column 17. When the superconducting packaging tape 8 needs to be tensioned, the tension wheel 10 can be set so that the tension wheel 10 can tension the superconducting packaging tape 8, and the rotation of the tension wheel 10 can prevent the friction between the tension wheel 10 and the superconducting packaging tape 8 from being too large during tensioning. A fixing bar 21 is fixed on one side of the fixing tube 16, and a cleaning mechanism is installed on the top of the fixing bar 21. The cleaning assembly is used to clean the outer surface of the superconducting packaging tape 8;

[0059] The cleaning mechanism includes a mounting plate 22 fixed to the top of the fixing strip 21, and a cleaning assembly is installed outside the mounting plate 22 and located at the upper and lower parts of the superconducting packaging tape 8;

[0060] The cleaning assembly includes two rotating wheels 23 rotatably connected to the inside of the mounting plate 22, and the two rotating wheels 23 are connected by a transmission belt 24. Cleaning cotton is arranged on the outside of the transmission belt 24. When the cleaning cotton contacts the superconducting packaging tape 8, the superconducting packaging tape 8 can be better cleaned.

[0061] A scraper block 28 is slidably connected inside the mounting plate 22 and at the positions opposite to the two transmission belts 24. The scraper block 28 is arranged to remove impurities or dust on the transmission belt 24. The scraper block 28 is in contact with the transmission belt 24. The scraper block 28 is used to clean the gear 25. The scraper block 28 can be pulled out on the mounting plate 22, so that when the scraper block 28 needs to be cleaned, it can be pulled out and cleaned. A support bar 27 is fixed inside the mounting plate 22 and at the position corresponding to the scraper block 28. The support bar 27 is arranged so that the support bar 27 can support the scraper block 28, so that the scraper block 28 can be stably mounted on the mounting plate 22.

[0062] Gears 25 are fixed to the outer sides of two adjacent rotating wheels 23 in the upper and lower cleaning assemblies, and the two gears 25 are meshingly connected. Through the setting of the gears 25, when one of the rotating wheels 23 rotates, multiple rotating wheels 23 can rotate simultaneously. A third motor 26 is also installed on the outer side of the mounting plate 22, and the output end of the third motor 26 is fixedly connected to one of the rotating wheels 23.

[0063] Wherein, the bottom plate 1 is also provided with:

[0064] An image processor, used for receiving the electrical signal from the radiation detector 15 and converting it into a digital image;

[0065] An image analyzer is used to analyze the digital image generated by the image processor, calculate various indicators of the packaging quality of the superconducting packaging tape 8, such as the distribution uniformity of the solder, pores, leaking seals, incomplete packaging, excess solder particles, position deviation of the superconducting tape, width deviation of the packaging tape, etc., and compare them with preset standard values ​​to determine whether there are defects;

[0066] A defect identifier, used to receive the analysis result of the image analyzer, and identify and classify the defects of the superconducting packaging tape 8 according to the preset defect type and level, and record the discovery position;

[0067] A defect display, used to display the identification result of the defect identifier and present it to the operator in the form of graphics or text;

[0068] The feedback controller is used to receive the recognition results of the defect identifier and send control signals to the packaging production equipment according to the preset control strategy to adjust the production parameters in real time, correct the problems and prevent the continued production of unqualified products.

[0069] During the packaging production process, the superconducting packaging tape 8 is continuously moved through the detection area using a winding device, and the X-ray emitter 13 emits X-rays to the superconducting packaging tape 8;

[0070] After passing through the superconducting packaging tape 8, the X-rays will be attenuated according to the absorption capacity of different materials. The main component of the packaging solder is lead, which has a strong absorption capacity for X-rays. The film is black at the location where there is solder, and white at the location where there is no solder. The more solder there is, the darker the color. The ray detector 15 receives the attenuation of the X-rays emitted by the X-ray generator after passing through the superconducting packaging tape 8, and converts it into an electrical signal;

[0071] The image processor receives the electrical signal of the radiation detector 15 and converts it into a digital image, which reflects the information of the packaging quality of the superconducting packaging tape 8;

[0072] The image analyzer analyzes the digital image generated by the image processor, calculates various indicators of the packaging quality of the superconducting packaging tape 8, such as the distribution uniformity of the solder, pores, leaking seals, incomplete packaging, excess solder particles, position deviation of the superconducting tape, width deviation of the packaging tape, etc., and compares them with the preset standard values ​​to determine whether there are defects;

[0073] The defect identifier receives the analysis result of the image analyzer, and identifies and classifies the defects of the superconducting packaging tape 8 according to the preset defect type and level, and records the discovery position;

[0074] The defect display shows the identification results of the defect identifier and presents them to the operator in the form of graphics or text, so that they can find and deal with problems in time;

[0075] The feedback controller receives the recognition results of the defect identifier and sends control signals to the packaging production equipment according to the preset control strategy to adjust the production parameters in real time, correct the problem and prevent the continued production of unqualified products.

[0076] The above is only a preferred embodiment of the present invention. It should be noted that, for ordinary technicians in the technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A continuous nondestructive testing device for high-temperature superconducting packaging strips, comprising a bottom plate (1), characterized in that: Two mounting columns (2) are fixed on the top of the base plate (1), and the two mounting columns (2) are rotatably connected with a rotating column (3), and a synchronous rotating mechanism is installed between the two rotating columns (3), and a tape unwinding wheel (5) and a tape taking-up wheel (14) are respectively fixed on one end of the two rotating columns (3) away from the mounting columns (2); The outer sides of the unwinding wheel (5) and the taking-up wheel (14) are both wound with a superconducting packaging tape (8); a meter wheel (9) is installed on the top of the bottom plate (1), and the meter wheel (9) is in contact with the superconducting packaging tape (8); a detection component is arranged on the bottom plate (1) and between the unwinding wheel (5) and the taking-up wheel (14); the detection component is used to detect the superconducting packaging tape (8); the detection component comprises a mounting frame (11) fixed on the top of the bottom plate (1); an X-ray emitter (13) is installed on the top of the mounting frame (11); a marker (7) is also installed on the top of the mounting frame (11); a fixing plate (12) is fixed on one side of the mounting frame (11) located at the bottom of the superconducting packaging tape (8); a ray detector (15) is arranged on the top of the fixing plate (12); The bottom plate (1) is also provided with: An image processor, used for receiving the electrical signal from the radiation detector (15) and converting it into a digital image; An image analyzer for analyzing the digital image generated by the image processor; A defect identifier, which is used to receive the analysis results of the image analyzer, and identify and classify the defects of the superconducting packaging tape according to the preset defect type and level, and record the discovery position; A defect display, used to display the identification result of the defect identifier and present it to the operator in the form of graphics or text; The feedback controller is used to receive the recognition results of the defect identifier and send control signals to the packaging production equipment according to the preset control strategy to adjust the production parameters in real time, correct the problem and prevent the continued production of unqualified products; The image processor comprises: A / D converter, used to convert the electrical signal of the X-ray receiver into a digital signal; A memory for storing the digital signal of the A / D converter; The image generator is used for generating a digital image according to the digital signal in the memory.

2. The detection device according to claim 1, characterized in that: A fixing tube (16) is fixed on the top of the base plate (1), a sliding column (17) is slidably connected to the inner side of the fixing tube (16), a second motor (18) is installed on the inner side of the fixing tube (16) and at the bottom of the sliding column (17), a threaded rod (19) is fixed to the output end of the second motor (18), and a mounting groove (20) corresponding to the threaded rod (19) is provided on the inner side of the sliding column (17), and the threaded rod (19) is threadedly connected to the mounting groove (20); A tension wheel (10) is installed on the top of the sliding column (17), a fixing bar (21) is fixed on one side of the fixing tube (16), and a cleaning mechanism is installed on the top of the fixing bar (21), and the cleaning assembly is used to clean the outer surface of the superconducting packaging tape (8).

3. The detection device according to claim 2, characterized in that: The cleaning mechanism comprises a mounting plate (22) fixed on the top of the fixing strip (21), and a cleaning component is installed outside the mounting plate (22) and located at the upper part and the lower part of the superconducting packaging tape (8); The cleaning assembly comprises two rotating wheels (23) rotatably connected to the inside of the mounting plate (22), and the two rotating wheels (23) are connected via a transmission belt (24); Gears (25) are fixed on the outer sides of two adjacent rotating wheels (23) in the upper and lower cleaning assemblies, and the two gears (25) are meshedly connected. A third motor (26) is also installed on the outer side of the mounting plate (22), and the output end of the third motor (26) is fixedly connected to one of the rotating wheels (23).

4. The detection device according to claim 3, characterized in that: A scraper block (28) is slidably connected inside the mounting plate (22) and at a position opposite to the two transmission belts (24). The scraper block (28) is in contact with the transmission belt (24) and is used to clean the gear (25).

5. The detection device according to claim 4, characterized in that: A support strip (27) is fixed inside the mounting plate (22) at a position corresponding to the scraping block (28).

6. The detection device according to claim 1, characterized in that: The synchronous rotation mechanism comprises a rotating shaft fixed on the outside of the two rotating columns (3), and the two rotating shafts are connected via a transmission belt (4), a first motor (6) is installed on one of the mounting columns (2), and the output end of the first motor (6) is connected to the rotating shaft on the mounting column (2).

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