A forming device for a superconducting coil

Abstract

The application discloses a forming device for superconducting coils, which comprises a fixing frame, an assembling box and a winding disc, wherein a raw material box is fixed on the surface of the fixing frame, a straightening box is fixed between the raw material box and the assembling box on the surface of the fixing frame, a welding box is fixed between the assembling box and the winding disc on the surface of the fixing frame, a first spool is rotatably arranged in the raw material box, a copper strip is wound on the surface of the first spool, copper grooves are formed on the surface of the copper strip, the copper strip sequentially passes through the straightening box, the assembling box and the welding box, and is wound on the surface of the winding disc. The application is convenient and fast to use, can realize large-batch and large-scale production of superconducting coils, and guarantees the stable pressing of the superconducting cable into the interior of the copper grooves through rapid conveying and extrusion combination, so that the demand of the superconducting coil for a high-precision, high-stability and high-power power supply system for super-high magnetic field MRI magnet excitation and stable operation is met.

Description

Technical Field

[0001] This invention relates to the field of superconducting coil technology, and in particular to a superconducting coil forming apparatus. Background Technology

[0002] Ultra-high field MRI imaging has high resolution and is of great use in the diagnosis of early brain diseases, early cancer, early heart diseases, and in the study of the nervous system.

[0003] According to CN112670077A, a winding device for a double-arc superconducting coil with a concave surface is proposed. This invention solves the problem that the superconducting wire cannot adhere to the concave surface when preload is applied, resulting in the superconducting coil failing to form according to the designed skeleton shape. The winding device of this invention is easy to operate, produces good coil forming results, and is highly practical. This invention also has certain reference value for winding other irregularly shaped superconducting coils with concave surfaces.

[0004] However, in existing technologies, high electromagnetic loads pose a challenge to the mechanical properties of conductors; if high voltage is achieved using the traditional single-wire close-wound method, the large number of turns means ultra-high inductance, excessively high induced voltage due to magnet malfunction, and excessively long discharge time, which brings great difficulties to the insulation and thermal stability of the magnet. Summary of the Invention

[0005] The main objective of this invention is to provide a superconducting coil forming device that can effectively address the challenge posed by high electromagnetic loads to the mechanical properties of conductors. High voltage, if using the traditional single-wire close winding method, results in a large number of turns, which means ultra-high inductance, excessively high induced voltage due to magnet quenching, and excessively long discharge time, posing significant challenges to the insulation and thermal stability of the magnet.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A superconducting coil forming apparatus, comprising:

[0008] Fixture;

[0009] The assembly box, fixed on the mounting frame, is used for the mass production of superconducting coils.

[0010] A winding reel, fixed to the fixed frame, is used for winding the conductor;

[0011] The fixing frame has a raw material box fixed to its surface, a straightening box fixed between the raw material box and the assembly box, and a welding box fixed between the assembly box and the winding reel.

[0012] Preferably, a first reel is rotatably arranged inside the raw material box, and a copper strip is wound on the surface of the first reel. The copper strip has a copper groove on its surface. The copper strip passes through the straightening box, the assembly box and the welding box in sequence, and is wound up on the surface of the take-up reel.

[0013] Preferably, a second reel is rotatably disposed inside the raw material box, and a superconducting cable is wound on the surface of the second reel; a first pressure plate is rotatably disposed inside the assembly box.

[0014] Preferably, a third reel is rotatably arranged inside the raw material box, and welding rods are wound on the surface of the third reel. A second pressure plate is rotatably arranged inside the assembly box at the position of the welding rods. A welding groove is opened on the inner side of the copper tank at the position of the welding rods. There are three third reels.

[0015] Preferably, the surface of the copper strip is designed to protrude at the opening of the copper groove, and a third pressure plate is rotatably disposed inside the assembly box at the opening of the copper groove.

[0016] Preferably, a processing box is fixed inside the assembly box. The outer contour shape of the processing box is consistent with the shape of the copper tank. An opening is provided on the side of the processing box relative to the raw material box, and the opening is designed with a sloping structure. A first suction hole is provided inside the processing box, and the first suction hole is connected to a negative pressure source through a pipe.

[0017] Preferably, a pair of crusher shafts are rotatably arranged at the bottom of the first suction hole inside the processing box, and a second suction hole is opened at the bottom of the crusher shaft inside the processing box. The second suction hole is connected to a negative pressure source through a pipe.

[0018] Preferably, the bottom surface of the treatment tank is provided with a cleaning groove, the cleaning groove is provided with a water inlet hole, and the cleaning groove is also provided with a third suction hole, which is connected to a negative pressure source through a pipe.

[0019] Preferably, a roller is rotatably arranged inside the cleaning groove, and cleaning cotton is sleeved on the surface of the roller. A filter screen is fixedly connected to the top of the third suction hole inside the cleaning groove.

[0020] Preferably, the top of the cleaning tank is in communication with the second suction hole, an electric telescopic rod is fixedly connected to the top of the cleaning tank, a control board is fixedly connected to the bottom of the electric telescopic rod, a reverse hole is opened in the cleaning tank near the third suction hole, and a one-way valve is fixedly connected in the reverse hole.

[0021] Compared with the prior art, the present invention has the following beneficial effects: This superconducting coil forming device, by setting a fixing frame, an assembly box and a winding reel, and by setting a first pressure plate inside the assembly box, effectively realizes the mass production of superconducting coils. Through rapid conveying and extrusion assembly, it ensures that the superconducting cable is smoothly pressed into the interior of the copper groove, thus meeting the superconducting coil requirements of high-precision, high-stability and high-power power supply systems for the excitation and stable operation of ultra-high magnetic field MRI magnets.

[0022] By setting up a processing box and crusher shafts, when the foreign objects sucked into the processing box are large in size, they cannot be completely sucked out through the first suction hole, or in particular, these large foreign objects are easy to block the hole. The motor drives a pair of crusher shafts to rotate relative to each other, and the crusher shafts can crush the large foreign objects. Finally, the fully crushed foreign objects are discharged through the second suction hole, avoiding the problem of large foreign objects accumulating inside the processing box. Attached Figure Description

[0023] Figure 1 This is a three-dimensional schematic diagram of a superconducting coil forming device provided by the present invention.

[0024] Figure 2 Main view.

[0025] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle.

[0026] Figure 4 This is a schematic diagram of the pressing and fitting of welding rods.

[0027] Figure 5 This is a schematic diagram of the sealing of the copper strip.

[0028] Figure 6 This is a schematic diagram of the processing box.

[0029] Figure 7 for Figure 6 A magnified view of a portion of point B in the middle.

[0030] Figure 8 for Figure 6 A magnified view of a portion of point C.

[0031] In the diagram: 1. Fixing frame; 2. Assembly box; 3. Rewinding reel; 4. Raw material box; 5. First reel; 6. Copper bar; 7. Straightening box; 8. Welding box; 9. Second reel; 10. Superconducting cable; 11. First pressure plate; 12. Third reel; 13. Welding rod; 14. Second pressure plate; 15. Third pressure plate; 16. Processing box; 17. First suction port; 18. Crusher shaft; 19. Second suction port; 20. Water inlet; 21. Third suction port; 22. Roller; 23. Cleaning cotton; 24. Filter screen; 25. Electric telescopic rod; 26. Control panel; 27. Reverse hole; 28. One-way valve. Detailed Implementation

[0032] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0033] like Figure 1-8 As shown, a superconducting coil forming apparatus includes:

[0034] Fixture 1;

[0035] Assembly box 2, fixed on the fixing frame 1, is used for mass production of superconducting coils;

[0036] The winding reel 3 is fixed on the fixing frame 1 and is used to wind the conductor;

[0037] The fixing frame 1 has a raw material box 4 fixed on its surface, a straightening box 7 fixed between the raw material box 4 and the assembly box 2, and a welding box 8 fixed between the assembly box 2 and the winding reel 3.

[0038] A first reel 5 is rotatably installed inside the raw material box 4. A copper strip 6 is wound on the surface of the first reel 5. A copper groove is opened on the surface of the copper strip 6. The copper strip 6 passes through the straightening box 7, the assembly box 2 and the welding box 8 in sequence, and is wound on the surface of the take-up reel 3.

[0039] A second roller 9 is rotatably installed inside the raw material box 4, and a superconducting cable 10 is wound on the surface of the second roller 9. A first pressure plate 11 is rotatably installed inside the assembly box 2.

[0040] During operation, ultra-high field MRI imaging offers high resolution. It has important applications in the diagnosis of early brain diseases, early cancer, early heart diseases, and research on the nervous system. In existing technologies, high electromagnetic loads pose a challenge to the mechanical properties of conductors; high voltage, if using traditional single-wire close-winding methods, results in a large number of turns, implying ultra-high inductance, excessively high induced voltage due to magnet hysteresis, and excessively long discharge times, posing significant challenges to the insulation and thermal stability of the magnet. This invention addresses this by using a superconducting coil forming device to directly press the Nb3Sn wire superconducting cable 10 into the copper groove of the copper strip 6, forming a high-thermal-stability, high-structural-strength, and high-performance Nb3Sn composite cable conductor. The process involves starting a motor inside the forming equipment, which drives the take-up reel 3 to rotate, continuously pulling the copper strip 6. During this process, the first pressure plate 11 rotates, smoothly pressing the superconducting cable 10 into the copper groove to form a composite cable conductor. Finally, the composite cable conductor is wound onto the surface of the take-up reel 3 to obtain a formed superconducting coil. This invention effectively realizes the mass production of superconducting coils. Through rapid conveying and extrusion assembly, it ensures that the superconducting cable 10 is smoothly pressed into the copper groove, meeting the superconducting coil requirements of high-precision, high-stability, and high-power power supply systems for the excitation and stable operation of ultra-high magnetic field MRI magnets.

[0041] A third reel 12 is rotatably arranged inside the raw material box 4. Welding rods 13 are wound on the surface of the third reel 12. A second pressure plate 14 is rotatably arranged inside the assembly box 2 at the position of welding rods 13. Welding grooves are opened on the inner side of the copper tank at the position of welding rods 13. There are three third reels 12.

[0042] During operation, the third reel 12 is set up and rotates. The welding rod 13 and copper strip 6 on the surface of the third reel 12 are synchronously discharged from the material box 4. At the same time, the second pressure plate 14 rotates, first pressing the welding rod 13 into the corresponding welding groove, and then pressing the superconducting cable 10 into the copper groove. When passing through the welding box 8 later, it ensures that the superconducting cable 10 and copper strip 6 are fully welded, reducing the problem of superconducting coil popping out during later use.

[0043] The surface of the copper strip 6 is designed to protrude at the opening of the copper groove, and a third pressure plate 15 is rotatably installed inside the assembly box 2 at the opening of the copper groove.

[0044] During operation, by setting a third pressure plate 15, the third pressure plate 15 can laterally squeeze the protruding structure at the opening of the copper groove of the copper strip 6, thereby partially sealing the opening of the copper groove and completely limiting the superconducting cable 10 inside the copper groove, ensuring a stable connection between the superconducting cable 10 and the copper strip 6.

[0045] The assembly box 2 is fixed with a processing box 16. The outer contour of the processing box 16 is consistent with the shape of the copper tank. The processing box 16 has an opening on the side opposite to the raw material box 4, and the opening is designed with a sloping structure. The processing box 16 has a first suction hole 17, which is connected to a negative pressure source through a pipe.

[0046] During operation, the processing box 16 is set up to pre-treat the inside of the copper tank, so that foreign objects or uneven structures inside the copper tank can be effectively removed. After processing, the superconducting cable 10 is pressed in to ensure that it is fully assembled. At the same time, the foreign objects removed can be quickly sucked out through the first suction hole 17.

[0047] A pair of crusher shafts 18 are rotatably installed inside the processing box 16 at the bottom of the first suction hole 17. Inside the processing box 16, a second suction hole 19 is opened at the bottom of the crusher shafts 18. The second suction hole 19 is connected to a negative pressure source through a pipe.

[0048] During operation, by setting the crusher shaft 18, if the foreign objects cleaned inside the processing box 16 are large in size and cannot be completely sucked out through the first suction hole 17, or especially if these large foreign objects are easy to block the hole, the crusher shaft 18 is driven by the motor to rotate relative to each other. The crusher shaft 18 can crush the large foreign objects and finally allow the fully crushed foreign objects to be discharged through the second suction hole 19, thus avoiding the problem of large foreign objects accumulating inside the processing box 16.

[0049] The bottom of the treatment box 16 is provided with a cleaning groove, a water inlet 20 is provided in the cleaning groove, and a third suction hole 21 is also provided in the cleaning groove. The third suction hole 21 is connected to a negative pressure source through a pipe.

[0050] During operation, a cleaning tank is opened at the bottom of the processing box 16. Through the water inlet 20 inside the cleaning tank, cleaning water can be continuously discharged. This can continuously clean the inner wall of the copper tank. The wastewater after cleaning will be quickly discharged through the third suction hole 21 inside the cleaning tank, ensuring the cleanliness of the copper tank and reducing the impact of foreign matter adhering inside the copper tank on the superconducting performance.

[0051] A roller 22 is rotatably installed inside the cleaning tank, and a cleaning cotton 23 is sleeved on the surface of the roller 22. A filter screen 24 is fixedly connected to the top of the third suction hole 21 inside the cleaning tank.

[0052] During operation, the roller 22 is set up. By rotating the roller 22, a roller brush can be further implemented on the basis of water rinsing to ensure the cleaning effect. At the same time, the filter screen 24 can filter the impurities inside the cleaning water, avoiding the discharge of wastewater containing a large amount of metal impurities and polluting the environment.

[0053] The top of the cleaning tank is connected to the second suction hole 19. An electric telescopic rod 25 is fixedly connected to the top of the cleaning tank. A control plate 26 is fixedly connected to the bottom of the electric telescopic rod 25. A reverse hole 27 is opened in the cleaning tank near the third suction hole 21. A one-way valve 28 is fixedly connected in the reverse hole 27.

[0054] During operation, by setting up the electric telescopic rod 25 and controlling its extension, the electric telescopic rod 25 will drive the control plate 26 to move. After the control plate 26 moves, it will connect the cleaning tank and the second suction hole 19. At this time, the third suction hole 21 stops connecting to the negative pressure source and starts the negative pressure of the second suction hole 19. The second suction hole 19 can reverse the suction of the filtered impurities on the surface of the filter screen 24. Since the reverse hole 27 is connected to the external atmosphere, the gas introduced into the cleaning tank by the reverse hole 27 can promote the airflow impact of the gas on the filter screen 24, ensuring that the filtered impurities are fully sucked out.

[0055] It should be noted that this invention is a superconducting coil forming device. The working principle involves directly pressing the Nb3Sn superconducting cable 10 into the copper groove of the copper strip 6 to form a high-thermal-stability, high-structural-strength, and high-performance Nb3Sn composite cable conductor. By starting the motor inside the forming device, the motor drives the winding reel 3 to rotate, continuously pulling the copper strip 6. During this process, the first pressure plate 11 rotates, smoothly pressing the superconducting cable 10 into the copper groove to obtain the composite cable conductor. Finally, the composite cable conductor is wound onto the surface of the winding reel 3 to obtain a formed superconducting coil. A third reel 12 is provided; the third reel 12 rotates, and the third reel... The welding rod 13 on surface 12 is synchronously discharged from the material box 4 along with the copper strip 6. Simultaneously, the second pressure plate 14 rotates, first pressing the welding rod 13 into the corresponding welding groove, and then pressing the superconducting cable 10 into the copper groove. Later, when passing through the welding box 8, this ensures sufficient welding between the superconducting cable 10 and the copper strip 6, reducing the risk of the superconducting coil popping out during later use. By setting a third pressure plate 15, its rotation allows for lateral compression of the protruding structure at the opening of the copper groove of the copper strip 6, achieving partial sealing of the opening and thus completely limiting the superconducting cable 10 inside the copper groove, ensuring a stable connection between the superconducting cable 10 and the copper strip 6. Through this process... Box 16 allows for pre-treatment of the interior of the copper tank, effectively removing foreign objects or uneven structures. After treatment, the superconducting cable 10 is press-fitted, ensuring complete assembly. Simultaneously, the removed foreign objects can be quickly sucked out through the first suction hole 17. By incorporating crusher shafts 18, if the foreign objects cleaned from the treatment box 16 are too large to be completely sucked out through the first suction hole 17, or if large pieces easily clog the hole, a pair of crusher shafts 18 are driven by a motor to rotate relative to each other. The crusher shafts 18 can crush large foreign objects, ultimately allowing the fully crushed objects to be discharged through the second suction hole 19, preventing the large pieces from being discharged. The problem of foreign matter accumulation inside the treatment tank 16 is addressed by creating a cleaning tank at the bottom of the treatment tank 16. A water inlet 20 inside the cleaning tank continuously discharges cleaning water, which continuously cleans the inner wall of the copper tank. The cleaned wastewater is quickly discharged through the third suction hole 21 inside the cleaning tank, ensuring the cleanliness of the copper tank and reducing the impact of foreign matter adhering inside the copper tank on superconducting performance. Furthermore, a roller 22 is installed, which, upon rotation, further enhances the cleaning effect by acting as a brush in addition to water rinsing. Simultaneously, a filter screen 24 filters impurities from the cleaning water, preventing the discharge of wastewater containing large amounts of metallic impurities and thus avoiding environmental pollution.By setting up an electric telescopic rod 25 and controlling its extension, the electric telescopic rod 25 will drive the control plate 26 to move. After the control plate 26 moves, it will connect the cleaning tank and the second suction hole 19. At this time, the third suction hole 21 will stop connecting to the negative pressure source, and the negative pressure of the second suction hole 19 will be activated. The second suction hole 19 can reverse the flow of filtered impurities from the surface of the filter screen 24. Since the reverse hole 27 is connected to the external atmosphere, the gas introduced into the cleaning tank through the reverse hole 27 can promote the airflow impact of the gas on the filter screen 24, ensuring that the filtered impurities are fully sucked out.

[0056] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A forming apparatus for a superconducting coil, characterized in that, include: Fixture (1); Assembly box (2) is fixed on the fixed frame (1) for mass production of superconducting coils; A winding reel (3) is fixed on the fixed frame (1) and used to wind the conductor; Among them, a raw material box (4) is fixed on the surface of the fixing frame (1), a straightening box (7) is fixed on the surface of the fixing frame (1) between the raw material box (4) and the assembly box (2), and a welding box (8) is fixed on the surface of the fixing frame (1) between the assembly box (2) and the winding reel (3). The raw material box (4) is rotatably provided with a first reel (5), and a copper strip (6) is wound on the surface of the first reel (5). A copper groove is opened on the surface of the copper strip (6). The copper strip (6) passes through the straightening box (7), the assembly box (2) and the welding box (8) in sequence, and is wound on the surface of the take-up reel (3). The raw material box (4) is also rotatably equipped with a second spool (9), and a superconducting cable (10) is wound on the surface of the second spool (9). The assembly box (2) is rotatably equipped with a first pressure plate (11). The raw material box (4) is rotatably equipped with a third reel (12), and the surface of the third reel (12) is wound with welding rods (13). The assembly box (2) is rotatably equipped with a second pressure plate (14) at the position of the welding rods (13). The inner side of the copper tank is provided with a welding groove at the position of the welding rods (13). The third reel (12) is provided with three of them.

2. The superconducting coil forming apparatus according to claim 1, characterized in that: The surface of the copper strip (6) is designed to protrude at the opening of the copper groove, and a third pressure plate (15) is rotatably installed inside the assembly box (2) at the opening of the copper groove.

3. The superconducting coil forming apparatus according to claim 2, characterized in that: The assembly box (2) is fixed with a processing box (16). The outer contour of the processing box (16) is consistent with the shape of the copper tank. The processing box (16) has an opening on the side opposite to the raw material box (4), and the opening is designed with a sloping structure. The processing box (16) has a first suction hole (17), which is connected to a negative pressure source through a pipe.

4. The superconducting coil forming apparatus according to claim 3, characterized in that: A pair of crusher shafts (18) are rotatably arranged inside the processing box (16) at the bottom of the first suction hole (17). A second suction hole (19) is opened at the bottom of the crusher shafts (18) inside the processing box (16). The second suction hole (19) is connected to a negative pressure source through a pipe.

5. The superconducting coil forming apparatus according to claim 4, characterized in that: The bottom surface of the treatment box (16) is provided with a cleaning groove, and a water inlet (20) is provided in the cleaning groove. A third suction hole (21) is also provided in the cleaning groove. The third suction hole (21) is connected to a negative pressure source through a pipe.

6. The superconducting coil forming apparatus according to claim 5, characterized in that: A roller (22) is rotatably installed inside the cleaning groove. A cleaning cotton (23) is sleeved on the surface of the roller (22). A filter screen (24) is fixedly connected to the top of the third suction hole (21) inside the cleaning groove.

7. The superconducting coil forming apparatus according to claim 6, characterized in that: The top of the cleaning trough is connected to the second suction hole (19). An electric telescopic rod (25) is fixedly connected to the top of the cleaning trough. A control plate (26) is fixedly connected to the bottom of the electric telescopic rod (25). A reverse hole (27) is opened in the cleaning trough near the third suction hole (21). A one-way valve (28) is fixedly connected in the reverse hole (27).

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