Device and method for controlling section of armored superconducting coil winding for nuclear fusion

Abstract

The invention provides an armored superconducting coil winding section control device and method for nuclear fusion, and the device comprises a winding bottom die, a winding side die, an inter-cake limiting assembly and an inter-layer limiting assembly, the appearance contour of the winding bottom die is consistent with the bottom contour of a superconducting coil, and the winding bottom die is used for bearing the weight of a winding and constraining the bottom contour; the winding side mold is consistent with the inner and outer contours of the superconducting coil and is used for restraining the inner and outer contours of the winding in the winding process; the inter-cake limiting assembly can restrain the degree of freedom in the height direction of the die-falling winding during the winding of the superconducting coil, so that the height size of the cross section of the superconducting coil winding is ensured; the interlayer limiting assembly can restrain the radial degree of freedom of the die-falling winding during the winding period of the superconducting coil, so that the radial size of the cross section of the superconducting coil winding is ensured; the multiple sets of winding bottom dies, winding side dies, inter-cake limiting assemblies and inter-layer limiting assemblies are distributed and installed according to the contour of the superconducting coil. According to the invention, precise control of the winding section after the superconducting coil is wound can be realized.

Description

Technical Field

[0001] This invention belongs to the field of manufacturing technology of armored superconducting coils for nuclear fusion, and specifically relates to a device and method for controlling the winding cross section of armored superconducting coils for nuclear fusion. Background Technology

[0002] Fusion energy is safe, clean, and inexhaustible, making it one of the most ideal ultimate energy sources for the future. However, fusion energy development is extremely difficult, and superconducting tokamak is currently one of the most promising pathways to achieving fusion energy. Existing nuclear fusion superconducting tokamak experimental devices worldwide, such as China's EAST, South Korea's KSTAR, and Japan's JT-60SA, all use armored superconducting conductors for coil winding manufacturing. As a core component of the fusion device, the high-strength magnetic field generated by the superconducting coil during operation can stably confine the plasma, ensuring the continuous fusion reaction. Therefore, the manufacturing quality of the superconducting coil determines whether the nuclear fusion device can operate stably. Nuclear fusion superconducting coils are enormous. During the coil winding manufacturing process, limiting molds, F-clamps, or C-clamps are generally used to limit the already cast windings. This method is complex and lacks constraint in the height direction of the cast windings, easily causing deviations in winding height or mis-turns of different conductors, severely affecting the forming accuracy and quality of the superconducting coil. To address the aforementioned issues, there is an urgent need for a device and method for controlling the cross-section of superconducting coil windings, enabling high-precision forming and manufacturing of superconducting coils. Summary of the Invention

[0003] To address the aforementioned technical problems, this invention provides a device and method for controlling the cross-section of a sheathed superconducting coil winding for nuclear fusion. The device includes a winding base mold, winding side molds, inter-mold limiting components, and inter-layer limiting components, all mounted on a superconducting coil winding rotary table. The outer contour of the winding base mold is consistent with the bottom contour of the superconducting coil, serving to support the weight of the winding and constrain the bottom contour. The winding side molds are consistent with the inner and outer contours of the superconducting coil, serving to constrain the inner and outer contours of the winding during the winding process. The inter-mold limiting components can constrain the degree of freedom in the height direction of the fallen winding during superconducting coil winding, ensuring the height dimension of the superconducting coil winding cross-section. The inter-layer limiting components can constrain the radial degree of freedom of the fallen winding during superconducting coil winding, ensuring the radial dimension of the superconducting coil winding cross-section. Multiple sets of the winding base molds, winding side molds, inter-mold limiting components, and inter-layer limiting components are installed according to the contour of the superconducting coil, enabling precise control of the winding cross-section after the superconducting coil winding is completed. This invention features a lightweight structure, quick installation, and simple use, making it suitable for winding various types of nuclear fusion armored superconducting coils and possessing broad application prospects. This invention achieves dimensional constraints on the radial and vertical directions of the superconducting coil winding while simultaneously enabling precise control of the winding cross-sectional dimensions after winding.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A device for controlling the cross-section of a superconducting coil winding for nuclear fusion includes a winding base mold, winding side molds, inter-mold limiting components, and inter-layer limiting components. The winding base mold is connected to the coil winding platform via screws. The winding side molds are connected to the coil winding platform via mounting holes on the base plate on both sides of the winding base mold via screws. The winding base mold and the winding side molds are combined to form a coil forming contour mold. The inter-mold limiting components have no fixed mounting holes and are freely placed on the base plate of the winding side molds. The inter-layer limiting components are arranged at the gaps between different winding side molds on both sides of the winding base mold and are connected to the coil winding platform via screws.

[0006] Furthermore, the bottom winding mold is positioned in the middle of the side winding mold.

[0007] Furthermore, the inter-die limiting assembly includes an inter-die pressure block, a pressure plate, a square washer, a square head bolt, a fastening nut, a T-slot block, and a rear support device. The T-slot block is welded to the winding side mold.

[0008] Furthermore, the pressure plate generates downward pressure through the T-slot block, square head bolt, square washer and fastening nut, and applies the pressure to the winding disc pressure block and the rear support device to achieve the inter-disc clamping and limiting of the demolded superconducting coil winding.

[0009] Furthermore, the rear support device includes a support base, a connecting screw, a rotating support, a cotter pin, a pin shaft, and a support plate, with the support plate connected to the rotating support via the pin shaft and cotter pin.

[0010] Furthermore, the rotating support is connected to the connecting screw by welding and installed on the support base by threaded connection, thereby realizing the height adjustment of the rotating support.

[0011] Furthermore, the support plate can rotate around the pivot pin.

[0012] Furthermore, the interlayer limiting assembly includes an interlayer winding clamp, a transition tube, a mounting base, and a quick clamp, with multiple threaded holes of different heights on the side of the mounting base.

[0013] Furthermore, the quick clamp is mounted on the mounting base via a threaded connection and its height position can be adjusted according to the different number of discs in the die coil.

[0014] Furthermore, the transition tube has different length specifications for radial limiting when windings with different layers are dropped into the mold.

[0015] This invention also provides a method for controlling the cross-sectional area of ​​a superconducting coil winding for nuclear fusion. Several sets of cross-sectional area control devices for armored superconducting coil windings for nuclear fusion are installed along the outline of the superconducting coil winding. For superconducting coil windings of different "pancakes", the inter-pancake limiting components are adjusted to correspond to the inter-pancake pressure blocks of the corresponding "pancake" to achieve height limiting of different pancakes. For superconducting coil windings of different "layers", the inter-layer limiting components are adjusted and replaced to correspond to the transition tubes of the corresponding "layer" to achieve radial limiting of different layers. Finally, precise control of the cross-sectional area of ​​the winding is achieved after winding is completed.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] The adjustable rotating support and the support plate rotating around the pin shaft in the inter-layer limiting component of this invention can be used for height limiting of armored superconducting coils with different cross-sectional sizes and different forming styles. The multi-hole quick-installation method and quick-change transition tube of the inter-layer limiting component can be used for radial limiting of armored superconducting coils with different cross-sectional sizes and different forming styles. This invention achieves dimensional constraints in the radial and height directions of the superconducting coil winding, and achieves precise control of the winding cross-section after the superconducting coil is wound. This invention is lightweight, quick to install, and simple to use. It can be quickly arranged and adjusted according to the forming style requirements of different types of magnet coils. It is suitable for winding various types of nuclear fusion armored superconducting coils, such as "correction field coils", "polonal field coils", and "toroidal field coils" in tokamak devices, and has broad application prospects. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a device for controlling the cross-sectional dimensions of a sheathed superconducting coil winding for nuclear fusion according to the present invention.

[0019] Figure 2 This is a schematic diagram of the radial dimensions of the constraint coil winding of the present invention.

[0020] Figure 3 This is a schematic diagram showing the height dimensions of the constraint coil winding of the present invention.

[0021] Figure 4 This is a schematic diagram of the rear support device.

[0022] The reference numerals in the attached drawings are as follows: 100 – Winding bottom mold; 200 – Winding side mold; 300 – Interlayer limiting assembly; 310 – Mounting base; 320 – Quick clamp; 330 – Interlayer pressing block; 340 – Transition tube; 400 – Inter-disc limiting assembly; 410 – Winding disc pressing block; 420 – Pressure plate; 430 – Square washer; 440 – Square head bolt; 450 – Fastening nut; 460 – T-slot block; 470 – Rear end support device; 471 – Support base; 472 – Connecting screw; 473 – Rotary support; 474 – Cotter pin; 475 – Pin shaft; 476 – Support plate; 500 – Winding. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0024] like Figure 1 As shown, the present invention provides a device for controlling the cross-sectional dimensions of a sheathed superconducting coil winding for nuclear fusion, comprising a winding base mold 100, winding side molds 200, inter-mold limiting components 400, and inter-layer limiting components 300. The winding base mold 100 is threadedly connected to the coil winding platform via screws. The winding side molds 200 are threadedly connected to the coil winding platform via mounting holes on the base plate on both sides of the winding base mold 100 via screws. The winding base mold 100 and the winding side molds 200 are combined to form a coil forming contour mold. The inter-mold limiting components 400 have no fixed mounting holes and can be freely placed on the base plate of the winding side molds 200. The inter-layer limiting components 300 are arranged at the gaps between different winding side molds 200 on both sides of the winding base mold 100 and are threadedly connected to the coil winding platform via screws.

[0025] Preferred, such as Figure 1 As shown, the bottom winding mold 100 is positioned in the middle of the side winding mold 200. The bottom winding mold 100 is a metal block whose upper contour surface coincides with the lower contour surface of the superconducting coil, and it is connected and fastened to the winding platform through standard parts. The side winding mold is divided into an inner contour side mold and an outer contour side mold, both of which are L-shaped metal structural parts. The large machined surface of the L-shaped metal structural parts contacts the outer surface of the bottom winding mold. The wing plates are connected and fastened to the winding platform through standard parts. After the bottom winding mold and the side winding mold are assembled, a cavity mold with three directional limiting surfaces is achieved.

[0026] Preferred, such as Figure 3As shown, the inter-die limiting assembly 400 includes an inter-die pressure block 410, a pressure plate 420, a square washer 430, a square head bolt 440, a fastening nut 450, a T-slot block 460, and a rear support device 470. The T-slot block 460 is welded to the outer side of the winding side mold 200. The square head bolt 440 is embedded in the slot of the T-slot block. The slot of the pressure plate 420 is connected to the square head bolt 440, the square washer 430, and the fastening nut 450 as a whole. One end of the pressure plate 420 contacts the superconducting coil through the inter-die pressure block 410, and the other end is supported by the rear support device 470.

[0027] Preferably, the pressure plate 420 generates downward pressure through the T-slot block 460, square head bolt 440, square washer 430 and fastening nut 450, and applies the pressure to the winding disc pressure block 410 and the rear support device 470, thereby achieving the inter-disc clamping and limiting of the winding 500 of the demolded superconducting coil.

[0028] Preferred, such as Figure 4 As shown, the rear support device 470 includes a support base 471, a connecting screw 472, a rotating support 473, a cotter pin 474, a pin 475, and a support plate 476. The support plate 476 is connected to the rotating support 473 via the pin 475 and the cotter pin 474. The rotating support 473 is connected to the connecting screw 472 by welding and is installed in the threaded hole in the support base 471 by a threaded connection. The rotating support 473 can move in the height direction by rotating the connecting screw 472. The support plate 476 is connected to the rotating support 473 via the cotter pin 474 and the pin 475. The support plate can rotate around the pin to adapt to support surfaces at different angles to the mounting surface.

[0029] Preferably, the rotating support 473 is connected to the connecting screw 472 by welding and is installed on the support base 471 by threaded connection, so as to realize the height adjustment of the rotating support 473.

[0030] Preferably, the support plate 476 is rotatable around the pin 475.

[0031] Preferred, such as Figure 2 As shown, the interlayer limiting assembly 300 includes an interlayer winding clamping block 330, a transition tube 340, a mounting base 310, and a quick clamp 320. The quick clamp 320 is mounted on the mounting base 310 via standard parts. The clamping end face of the quick clamp 310 is arranged with the transition tube 340 and the interlayer clamping block 330 on the surface of the superconducting coil. When the quick clamp 310 clamps, it presses the conductor in the radial direction through the transition tube 340 and the interlayer clamping block 330.

[0032] Preferably, the mounting base 310 has multiple threaded holes of different heights on its side. The quick clamp 320 is installed on the mounting base 310 by a threaded connection and can adjust its height position according to the different number of die coils.

[0033] Preferably, the transition tube 340 has different length specifications for radial limiting when the winding 500 with different layers is dropped into the mold.

[0034] Preferably, the bottom winding mold 100 and the side winding mold 200 should be fixed; when the winding 500 is formed and dropped, the interlayer limiting component 300 should first limit the superconducting coil winding radially and then the inter-panel limiting component 400 should limit the superconducting coil winding height.

[0035] The present invention also provides a control method using a device for controlling the cross-sectional dimensions of a sheathed superconducting coil winding for nuclear fusion. Several sets of the device for controlling the cross-sectional dimensions of the sheathed superconducting coil winding for nuclear fusion are installed along the outline of the superconducting coil winding. For superconducting coil windings of different "pancakes", adjusting the inter-pancake limiting component 400 to correspond to the inter-pancake pressure block 410 of the "pancake" can achieve height limiting of different pancakes. For superconducting coil windings of different "layers", adjusting and replacing the inter-layer limiting component 300 to correspond to the transition tube 340 of the "layer" can achieve radial limiting of different layers. Finally, precise control of the cross-sectional dimensions of the winding 500 after winding is achieved.

[0036] In a preferred embodiment, during the winding process of the "tile-shaped" correction field coil of the tokamak device, when the conductor is lowered to the first layer of the first layer, the bottom winding mold 100 ensures the bottom arc profile of the winding 500 and achieves height limitation through the inter-layer limiting component 400; the side winding mold 200 ensures the profile of the inner and outer surfaces of the winding 500 and achieves radial limitation through the inter-layer limiting component 300. Using the aforementioned control method, 24 sets of the cross-sectional size control devices for the armored superconducting coil windings used in nuclear fusion are evenly distributed along the contour of the correction field coil, thus achieving cross-sectional control of the winding during the winding of the correction field coil.

[0037] The above description is merely a preferred embodiment of the present invention and is not restrictive. The accompanying drawings also show only one embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A device for controlling the cross-sectional area of ​​a sheathed superconducting coil winding for nuclear fusion, characterized in that, The device includes a winding base mold, winding side molds, inter-mold limiting components, and inter-layer limiting components. The winding base mold is connected to the coil winding platform via screws. The winding side molds are connected to the coil winding platform via mounting holes on the base plate on both sides of the winding base mold via screws. The winding base mold and the winding side molds are combined to form a coil forming contour mold. The inter-mold limiting components have no fixed mounting holes and are freely placed on the base plate of the winding side molds. The inter-layer limiting components are arranged at the gaps between different winding side molds on both sides of the winding base mold and are connected to the coil winding platform via screws.

2. The device for controlling the cross-sectional area of ​​a sheathed superconducting coil winding for nuclear fusion according to claim 1, characterized in that, The inter-die limiting assembly includes an inter-die pressure block, a pressure plate, a square washer, a square head bolt, a fastening nut, a T-slot block, and a rear support device. The T-slot block is welded to the winding side mold.

3. The device for controlling the cross-sectional area of ​​a sheathed superconducting coil winding for nuclear fusion according to claim 2, characterized in that, The pressure plate generates downward pressure through the T-slot block, square head bolt, square washer and fastening nut, and applies the pressure to the winding disc pressure block and the rear support device to achieve the disc clamping and limiting of the demolded superconducting coil winding.

4. The device for controlling the cross-sectional area of ​​a sheathed superconducting coil winding for nuclear fusion according to claim 2, characterized in that, The rear support device includes a support base, a connecting screw, a rotating support, a cotter pin, a pin shaft, and a support plate. The support plate is connected to the rotating support via the pin shaft and the cotter pin.

5. The device for controlling the cross-sectional area of ​​a sheathed superconducting coil winding for nuclear fusion according to claim 4, characterized in that, The rotating support is connected to the connecting screw by welding and is installed on the support base by threaded connection, thereby realizing the height adjustment of the rotating support.

6. The device for controlling the cross-sectional area of ​​a sheathed superconducting coil winding for nuclear fusion according to claim 4, characterized in that, The support plate is capable of rotating around the pin.

7. A device for controlling the cross-section of armored superconducting coil windings for nuclear fusion according to claim 1, wherein the interlayer limiting assembly comprises an interlayer winding clamping block, a transition tube, a mounting base, and a quick clamp, characterized in that, The mounting base has multiple threaded holes of different heights on its side.

8. A device for controlling the cross-sectional area of ​​a sheathed superconducting coil winding for nuclear fusion according to claim 6, characterized in that, The quick clamp is installed on the mounting base via a threaded connection and its height position can be adjusted according to the different number of discs in the die coil.

9. A device for controlling the cross-sectional area of ​​a sheathed superconducting coil winding for nuclear fusion according to claim 1, characterized in that, The transition tube has different length specifications and is used for radial limiting when windings with different layers are dropped into the mold.

10. A method for controlling the cross-sectional area of ​​a sheathed superconducting coil winding for nuclear fusion, characterized in that, Several sets of cross-sectional dimension control devices for armored superconducting coil windings used in nuclear fusion are installed along the outline of the superconducting coil windings. For superconducting coil windings of different "pancakes", the inter-pancake limiting components are adjusted to correspond to the inter-pancake pressure blocks of the corresponding "pancake" to achieve height limiting of different pancakes; for superconducting coil windings of different "layers", the inter-layer limiting components are adjusted and replaced to correspond to the transition tubes of the corresponding "layer" to achieve radial limiting of different layers, and finally achieve precise control of the cross-sectional dimensions of the winding after winding is completed.

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