Three-dimensional superconducting coil winding blanking platform for star simulator

Abstract

The invention discloses a three-dimensional superconducting coil winding blanking platform for a star simulator, which relates to the field of nuclear fusion coil winding forming and comprises a platform base, a mold platform, a square tube base, a mold supporting base, a blanking mold and a limiting tool, by means of different installation modes of the flat plate and the bent plate in the limiting tool, the ejector block can make contact with different orientations of all sections of the coil mold, then the falling mold is subjected to local shape correction through the arc face of the ejector block and certain angle adjustment of the limiting tool, and therefore the falling mold meets the requirement for contour precision.

Description

Technical Field

[0001] This invention relates to the field of nuclear fusion coil winding molding, specifically to a three-dimensional superconducting coil winding and casting platform for stellarators. Background Technology

[0002] A stellarator is a nuclear fusion experimental device that uses external helical windings to achieve magnetic confinement. Its structure mainly consists of an external coil and a closed tube, the latter designed as a straight line, a "racetrack," or a complex spatial curve. It typically has two to three pairs of helical windings, with different configurations corresponding to different magnetic surface shapes, such as elliptical or approximately triangular structures. A reverse current is passed through the windings, which, after superimposing with the longitudinal magnetic field, form rotating magnetic lines of force, effectively confining the plasma without a transformer. This design supports steady-state operation through complex magnetic configurations, unlike the pulsed operation of traditional tokamaks. Stellarators require three-dimensional coils, which are complex, difficult to manufacture, and costly. Currently, stellarator coils are divided into planar coils and non-planar coils. The structure of non-planar coils is a three-dimensional spatial twist. The mold-dropping platform, similar to that of traditional tokamak coils, cannot meet the mold-dropping requirements of non-planar stellarator coils, and due to limitations in machining accuracy, the manufactured molds cannot meet the contour accuracy requirements. Summary of the Invention

[0003] To address the aforementioned problems, this invention provides a three-dimensional superconducting coil winding and casting platform for stellarators. To achieve the above objectives, this invention employs the following technical solution:

[0004] A stellarator three-dimensional superconducting coil winding casting platform includes:

[0005] The platform base is used to fix the platform to the ground and provide rotational power.

[0006] The mold platform is a disc-shaped structure, and its bottom is fixedly connected to the platform base.

[0007] The square tube base is arranged in multiple groups and fixedly installed on the upper surface of the mold platform. Its structure is composed of square tubes and plate welded together.

[0008] The mold support base is fixedly installed on the surface of the square tube base and consists of a support base bottom plate, a support base top plate, and a support base side plate.

[0009] A drop mold, a mold for limiting and releasing the conductor after winding, is manufactured according to the desired coil profile and rests on the upper surface of the mold support base; and,

[0010] The limiting fixture is arranged on both sides of the dropping mold, and its bottom is installed on the side of the mold support base to support the dropping mold.

[0011] Preferably, the limiting fixture includes a top block, an Ω plate, a ball head nut, a push rod, a connecting plate, a flat plate, and a curved plate. The top block is arranged on the far left of the limiting fixture and is made of rubber. Its left end face is arc-shaped, and its right end is U-shaped, matching the shape of the Ω plate. The overall shape of the Ω plate is Ω-shaped. The connecting plate is a flat square plate, which, together with the Ω plate, forms a space to accommodate the ball head nut. The push rod is threaded to the flat plate or the curved plate, passes through the connecting plate, and connects to the ball head nut. The ball head nut is located between the Ω plate and the connecting plate, allowing the top block to contact the mold at an inclined angle.

[0012] Preferably, the mold platform is made of welded pipes, and the whole is leveled by adjusting bolts during installation.

[0013] Preferably, the mold support base is made of multiple plates welded together, and its overall height varies depending on the height of the mold.

[0014] Preferably, the side plate of the support base is provided with threaded holes at the position where the limiting tool is installed.

[0015] Preferably, the top block has a countersunk hole from left to right.

[0016] Preferably, the plate structure is planar, with threaded holes at the top for connecting the top rod and waist holes at the bottom for bolt installation and fixing.

[0017] Preferably, the lower half of the bending plate is a planar structure, and the upper half is bent at a certain angle along an inclined angle. The upper and lower parts have the same holes as the flat plate, which are used to replace the flat plate in the limiting fixture, so that the limiting fixture assembly limits the mold dropping at an inclined angle.

[0018] Preferably, the upper half of the bending surface of the bending plate can be oriented in different directions so that the top block faces upward or downward, thereby allowing the limiting fixture to limit the different bending directions of the mold.

[0019] Preferably, the mold support base is distributed around the perimeter of the mold dropping mold. Depending on the different orientations of the mold dropping mold, the plate or the bent plate is used to form the limiting fixture with different orientations of the top block. Multiple sets of the limiting fixture are arranged on both sides of the mold dropping mold.

[0020] The present invention has the following beneficial effects:

[0021] By using different installation methods for the flat plate and the curved plate in the limiting fixture, the top block can contact different orientations of each segment of the coil mold. Then, by using the arc surface of the top block and the limiting fixture itself to adjust the angle, the mold can be locally corrected. Combined with the dynamic detection of the contour by the laser tracker, the mold can be intuitively adjusted so that the mold meets the contour accuracy requirements. Attached Figure Description

[0022] The accompanying drawings, which are part of the specification of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention and do not constitute an improper limitation of the invention.

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Among them: 1-Mold platform; 2-Platform base; 3-Drop mold; 4-Limiting fixture; 5-Mold support base; 6-Square tube base.

[0025] Figure 2 This is a schematic diagram of the structure of the mold support base;

[0026] Wherein: 51-base plate of support seat; 52-top plate of support seat; 53-side plate of support seat.

[0027] Figure 3 A schematic diagram of the limiting fixture and bending plate under the flat plate structure;

[0028] Wherein: 41-top block; 42-Ω plate; 43-ball head nut; 44-top rod; 45-connecting plate; 46-flat plate; 47-bolt pair; 48-bend plate.

[0029] Figure 4 Schematic diagrams of two different states of a curved plate used as a mounting plate for a limiting fixture;

[0030] Figure 5 This is a top view of the device. Detailed Implementation

[0031] 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. To achieve the above objectives, this invention adopts the following technical solution.

[0032] The present invention will be further described below with reference to specific embodiments.

[0033] like Figure 1This invention provides a three-dimensional superconducting coil winding and unwinding platform for a stellarator, comprising a platform base 2, a mold platform 1, a square tube base 6, a mold support base 5, a unwinding mold 3, and a limiting fixture 4, arranged sequentially from bottom to top. The platform base 2 serves as the foundation of the entire device, being fixedly connected to the ground during installation, providing the foundation and rotational power for the mold platform 1. The mold platform 1 is integrally formed into a disc structure, with its bottom fixedly connected to the platform base 2. Multiple sets of square tube bases 6 are arranged and fixedly installed on the upper surface of the mold platform 1. Their structure is composed of square tubes and sheet metal welded together, with the upper and lower surfaces machined after welding. The height of the square tube bases 6 varies depending on the position of the unwinding mold 3 they support. The mold support base 5 is fixedly installed on the surface of the square tube base 6. The unwinding mold 3 is a mold for unwinding and limiting the conductor after winding, manufactured according to the required coil outline. The limiting fixture 4 is arranged on both sides of the unwinding mold 3, with its bottom installed on the side of the mold support base 5.

[0034] like Figure 2 The mold support base 5 is composed of a support base bottom plate 51, a support base top plate 52, and a support base side plate 53. The whole is made of multiple plates welded together to save material costs. The overall height varies depending on the height of the mold 3. The support base bottom plate 51 needs to be processed after welding to ensure flatness. The support base side plate 53 has threaded holes arranged at the position where the limiting tooling 4 is installed. The support base top plate 52 is processed with a contoured surface according to the shape of the bottom surface of the mold 3 to facilitate the positioning and installation of the mold 3.

[0035] like Figure 3The limiting fixture 4 is mainly composed of a top block 41, an Ω plate 42, a connecting plate 45, and a flat plate 46. The limiting fixture 4 is used to limit the side of the mold 3. The top block 41 is located on the far left of the limiting fixture 4. It is made of rubber, with a rounded left end and a concave right end, matching the shape of the Ω plate 42. It has a countersunk hole from left to right. The Ω plate 42 is shaped like an Ω and is made of metal. The connecting plate 45 is a flat square plate, which, together with the Ω plate 42, forms a space to accommodate the ball head nut 43. The bolt pair 47 connects the top block 41, the Ω plate 42, and the connecting plate 45. The flat plate is located on the right side of the limiting fixture 4. On the side, its structure is planar, with threaded holes at the top for connecting the top rod 44, and waist holes at the bottom for bolt installation and fixing; the top rod 44 is threadedly connected to the plate 46, passes through the connecting plate 45 and is connected to the ball head nut 43; the ball head nut 43 is located between the Ω plate 42 and the connecting plate 45, allowing the top block 41 to contact the dropping mold 3 at an inclined angle; the lower half of the bent plate 48 is planar, and the upper half is bent at a certain angle along an inclined angle, with the same holes as the plate 46 at the top and bottom, which are used to replace the plate 46 in the limiting fixture 4, so that the limiting fixture 4 can limit the dropping mold 3 at an inclined angle.

[0036] like Figure 4 As shown, the bending surface of the upper half of the bending plate 48 can be oriented in different directions so that the top block 41 can face upwards or downwards, thereby allowing the limiting fixture 4 to limit the different bending directions of the mold 3.

[0037] like Figure 5 As shown, the mold support base 5 is distributed around the mold 3. Depending on the different orientations of the mold 3, the top block 41 is composed of limiting fixtures 4 with different orientations, using flat plates 46 or curved plates 48. Multiple sets of limiting fixtures 4 are arranged on both sides of the mold 3.

[0038] The square tube base 6 and the mold support base 5 are arranged and installed according to the pre-processed holes in the mold platform 1. The mold 3 falls on the upper surface of the mold support base 5. The limiting fixtures 4 distributed on both sides of the mold 3 are assembled using flat plates 46 or bent plates 48 according to the different bending angles of the mold 3 at each segment, to ensure that the top block 41 can contact the mold 3 at different angles. The contour of the mold 3 is detected by a laser tracking instrument. By adjusting the top rod 44, the shape of the deviation at each position of the mold 3 is adjusted until the contour accuracy is met.

[0039] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A three-dimensional superconducting coil winding and casting platform for a stellarator, characterized in that, include: The platform base is used to fix the platform to the ground and provide rotational power. The mold platform is a disc-shaped structure, and its bottom is fixedly connected to the platform base. The square tube base is arranged in multiple groups and fixedly installed on the upper surface of the mold platform. Its structure is composed of square tubes and plate welded together. The mold support base is fixedly installed on the surface of the square tube base and consists of a support base bottom plate, a support base top plate, and a support base side plate. The drop mold is a mold used to limit the drop of the conductor after it has been wound and formed. It is manufactured and shaped according to the outline of the coil to be formed and falls on the upper surface of the mold support base. as well as, The limiting fixture is arranged on both sides of the dropping mold, and its bottom is installed on the side of the mold support base to support the dropping mold.

2. The stellarator three-dimensional superconducting coil winding and casting platform according to claim 1, characterized in that, The limiting fixture includes a top block, an Ω plate, a ball head nut, a push rod, a connecting plate, a flat plate, and a curved plate. The top block is located on the far left of the limiting fixture and is made of rubber. Its left end face is arc-shaped, and its right end is concave, matching the shape of the Ω plate. The overall shape of the Ω plate is Ω-shaped. The connecting plate is a flat square plate, which, together with the Ω plate, forms a space to accommodate the ball head nut. The push rod is threaded to the flat plate or the curved plate, passes through the connecting plate, and connects to the ball head nut. The ball head nut is located between the Ω plate and the connecting plate, allowing the top block to contact the mold at an inclined angle.

3. The stellarator three-dimensional superconducting coil winding and casting platform according to claim 2, characterized in that, The mold platform is made of welded pipes, and the whole assembly is leveled by adjusting bolts during installation.

4. The stellarator three-dimensional superconducting coil winding and casting platform according to claim 1, characterized in that, The mold support base is made of multiple plates welded together, and its overall height varies depending on the height of the mold.

5. The stellarator three-dimensional superconducting coil winding and casting platform according to claim 4, characterized in that, The support base side plate has threaded holes arranged at the position where the limiting tool is installed.

6. The stellarator three-dimensional superconducting coil winding and casting platform according to claim 1, characterized in that, The top block has a countersunk hole from left to right.

7. The stellarator three-dimensional superconducting coil winding and casting platform according to claim 1, characterized in that, The plate structure is planar, with threaded holes at the top for connecting the top rod and waist holes at the bottom for bolt installation and fixing.

8. The stellarator three-dimensional superconducting coil winding and casting platform according to claim 1, characterized in that, The lower half of the bending plate is a planar structure, and the upper half is bent at a certain angle along an inclined angle. The upper and lower parts have the same holes as the flat plate, which are used to replace the flat plate in the limiting fixture, so that the limiting fixture can limit the mold dropping at an inclined angle.

9. The stellarator three-dimensional superconducting coil winding and casting platform according to claim 8, characterized in that, The upper half of the bending surface of the bending plate can be oriented in different directions to allow the top block to face upwards or downwards, thereby enabling the limiting fixture to limit the different bending directions of the mold.

10. The stellarator three-dimensional superconducting coil winding and casting platform according to claim 1, characterized in that, The mold support base is distributed around the perimeter of the mold dropping mold. Depending on the different orientations of the mold dropping mold, the top block is composed of limiting fixtures with different orientations using the flat plate or the curved plate. Multiple sets of the limiting fixtures are arranged on both sides of the mold dropping mold.

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