A circumferential adjustment device for superconducting coil

Abstract

The present invention discloses a circumferential adjustment device for superconducting coils, which consists of an adjustment mechanism 1, an adjustment mechanism 2 and a sling. The adjustment mechanism 1 is arranged on the side of the multi-layer superconducting coil, and has multiple horizontal adjustment columns distributed longitudinally, with a height matching the number of coil layers; the adjustment mechanism 2 is located on the top of the uppermost coil, surrounded by a detachable support belt and in contact with the bottom of the coil, so that a gap is formed between the upper and lower coils when it is lifted by the sling; the adjustment mechanism 1 pushes the adjustment mechanism 2 through the telescopic adjustment column to achieve circumferential fine-tuning of the coil. The present invention uses a support belt to temporarily fix the coil, which can be cut and removed after stacking. At the same time, the adjustment mechanism 2 has a built-in protective plate with an adjustable distance, which can not only prevent the glass ribbon of the coil from being damaged, but also achieve coil shape preservation through contour adjustment; and the double-mechanism linkage achieves precise circumferential fine-tuning of the coil, and the adjustment column pushes to cooperate with the sling gap control to ensure that the stacking angles of the multi-layer coils are accurately aligned.

Description

Technical Field

[0001] The present invention belongs to the technical field of fusion superconducting coils, and in particular relates to a circumferential adjustment device for a superconducting coil. Background Art

[0002] During the manufacturing process of nuclear fusion superconducting coils, due to space limitations, the superconducting coils cannot be wound into pancakes indefinitely. Therefore, multiple pancake-shaped superconducting coils need to be stacked, and the joints of the coils must be accurately aligned during the stacking process to facilitate precise welding of the joints between the upper and lower pancakes.

[0003] However, due to the large size of nuclear fusion superconducting coils, with a diameter of up to more than ten meters, and the weight of some nuclear fusion superconducting coils can even reach tens or even hundreds of tons, given the large size and weight of nuclear fusion, how to stack the coils and fine-tune the coils to ensure that the coil joints can be accurately aligned is an urgent problem to be solved.

[0004] In the related technology, before stacking the coils, a VPI process (vacuum pressure impregnation) is first performed, and then the coils are stacked. During the stacking process, since the surface of the coils is a smooth resin material, a vacuum suction cup can be used to complete the lifting and stacking of the coils. However, for the one-piece glue-injected superconducting coils, the coils must be wrapped with rough glass ribbons on the surface when stacking, and vacuum suction cups cannot be used for lifting, which will further affect the precise stacking of the sub-unit coils. Summary of the Invention

[0005] The purpose of the present invention is to provide a circumferential adjustment device for a superconducting coil to solve the problems in the prior art.

[0006] To this end, the present invention provides a superconducting coil circumferential adjustment device, comprising: an adjustment mechanism 1, wherein the adjustment mechanism 1 has a height matching that of the multi-layer superconducting coil, and the adjustment mechanism 1 is provided with a plurality of horizontal adjustment columns along its longitudinal direction;

[0007] A second adjustment mechanism, the second adjustment mechanism being disposed on the upper surface of the uppermost superconducting coil, the second adjustment mechanism being surrounded by a support belt, the support belt surrounding the superconducting coil and contacting the bottom of the superconducting coil;

[0008] a hoist connected to the second adjusting mechanism, and used to lift the second adjusting mechanism so that a gap exists between the uppermost superconducting coil and the lower superconducting coil;

[0009] The adjusting column on the surface of the adjusting mechanism 1 contacts the surface of the adjusting mechanism 2. When the uppermost coil is lifted, the adjusting column extends to allow the adjusting mechanism 2 and the uppermost coil in contact therewith to move circumferentially.

[0010] As a further description of the above technical solution, the adjustment mechanism 1 includes a supporting base plate, a column is fixedly provided on the upper surface of the supporting base plate, a plurality of adjustment columns are arranged along the longitudinal direction of the column, and a protective block is provided at one end of the adjustment column.

[0011] As a further description of the above technical solution, the second adjustment mechanism includes a main frame, and at least one side of the main frame is provided with a symmetrically arranged wedge block, and the support belt passes through the bottom of the wedge block and wraps around the wedge block and then extends out, and the upper half of one side of the main frame is provided with a locking piece, and the end of the support belt is connected to the two ends of the locking piece.

[0012] As a further description of the above technical solution, the locking member includes a connecting rod, both ends of which are connected with eye bolts and pins, and the eye bolts and pins are connected to the wedge block.

[0013] As a further description of the above technical solution, a chip box is provided on at least one side of the main frame, and the chip box is provided below the locking member.

[0014] As a further description of the above technical solution, two vertical plates are provided on at least one side of the main frame, multiple tensioning plates are provided on the sides of the vertical plates, the support belt is in contact with the ends of the multiple tensioning plates, and a chip receiving plate is provided at the bottom of the vertical plate.

[0015] As a further description of the above technical solution, protective plates are provided on opposite surfaces of the two vertical plates, the protective plates are connected to the vertical plates via a plurality of bolts, and the protective plates are in contact with the side surfaces of the superconducting coil.

[0016] As a further description of the above technical solution, multiple groups of the first adjustment mechanism and the second adjustment mechanism are provided along the circumference of the superconducting coil.

[0017] As a further description of the above technical solution, the supporting belt is a stainless steel belt, and after the superconducting coil is adjusted to a preset position, the stainless steel belt is cut and pulled out from one end.

[0018] As a further description of the above technical solution, a reference line is provided on the side of each layer of the superconducting coil.

[0019] Beneficial effects:

[0020] 1. The present invention provides a circumferential adjustment device for superconducting coils, the support belt at the bottom of which can be arranged around the coil, which can meet the needs of short-term lifting of the coil and facilitate the stacking of the coils. At the same time, after the stacking is completed, the support belt can be cut and pulled out, further solving the pain point of the traditional solution that it cannot be removed after the stacking is completed.

[0021] 2. The present invention provides a circumferential adjustment device for a superconducting coil, wherein the portion in contact with the side surface of the superconducting coil is provided with a protective plate with an adjustable distance. The protective plate can protect the superconducting coil to prevent the glass ribbon from being damaged, and at the same time, the inner and outer contours of the superconducting coil can be adjusted through the protective plate to maintain the shape of the superconducting coil.

[0022] 3. The present invention provides a circumferential adjustment device for a superconducting coil, in which the second adjustment mechanism cooperates with the first adjustment mechanism. The adjustment column of the first adjustment mechanism pushes the second adjustment mechanism to produce a slight movement, and the second adjustment mechanism is clamped on the outside of the superconducting coil, thereby realizing small-angle adjustment of the superconducting coil and avoiding large-scale movement of the heavy coil, so as to ensure that the upper and lower coils can be accurately aligned to facilitate subsequent joint welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 A three-dimensional diagram of the superconducting coil circumferential adjustment device provided by the present invention.

[0025] Figure 2 This is a partially enlarged schematic diagram of the superconducting coil circumferential adjustment device provided by the present invention.

[0026] Figure 3 A three-dimensional diagram of the adjustment mechanism 1 of the superconducting coil circumferential adjustment device provided by the present invention.

[0027] Figure 4 A three-dimensional diagram of the second adjustment mechanism of the superconducting coil circumferential adjustment device provided by the present invention.

[0028] In the picture:

[0029] 100, adjustment mechanism 1; 110, support base plate; 120, column; 130, adjustment column;

[0030] 200, adjustment mechanism 2; 210, main frame; 211, vertical plate; 212, tensioning plate; 213, chip receiving plate; 214, protective plate; 220, wedge block; 230, wedge box; 240, support belt; 250, locking member; 251, connecting rod; 252, pin; 253, eye bolt; 260, chip receiving box;

[0031] 300. Superconducting coil. DETAILED DESCRIPTION

[0032] The present invention may be more readily understood by referring to the following detailed description of preferred embodiments of the present invention and the included Examples. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention pertains. In the event of a conflict, the definitions in this specification shall prevail.

[0033] The present invention provides a circumferential adjustment device for superconducting coils, which solves the problems in the prior art caused by the particularity of the process (i.e., integral glue injection after wrapping the glass ribbon on the surface). Specifically, the surface of the coil becomes rough after wrapping the glass ribbon, which makes it impossible to use the existing vacuum suction cup to lift and stack the coils. After the coils are stacked, the traditional clamps in the related art are difficult to remove due to the heavy weight of the superconducting coils and the requirement for precise alignment of the joints between the coils, which affects the normal stacking of the coils.

[0034] The technical concept of the present invention is that, on the one hand, a special clamp, namely the adjustment mechanism 2, is designed, and the supporting belt at the bottom thereof can be arranged around the coil, which can meet the needs of short-term lifting of the coil and facilitate the stacking of the coil. At the same time, after the stacking is completed, the supporting belt can be cut and pulled out, which further solves the pain point that the traditional solution cannot be removed after the stacking is completed. On the other hand, the part of the adjustment mechanism 2 that contacts the side of the superconducting coil is provided with a protective plate with an adjustable distance. The protective plate protects the superconducting coil and prevents the glass ribbon from being damaged. At the same time, the protective plate can also be used to adjust the inner and outer contours of the superconducting coil to maintain the shape of the superconducting coil. On the other hand, the adjustment mechanism 2 cooperates with the adjustment mechanism 1, and the adjustment column is extended through the adjustment mechanism 1. The adjustment column pushes the adjustment mechanism 2 to generate circumferential micro-displacement through axial displacement, and the adjustment mechanism 2 is clamped on the outside of the superconducting coil, thereby realizing small angle adjustment of the superconducting coil.

[0035] refer to Figures 1-4 A circumferential adjustment device for a superconducting coil 300 includes an adjustment mechanism 100. The longitudinal height of the adjustment mechanism 100 matches the stacking height of multiple layers of superconducting coils 300. The adjustment mechanism 100 is provided with multiple horizontal adjustment columns 130 along its longitudinal direction. Specifically, the adjustment mechanism 100 has a certain height that can meet the height requirements of the entire superconducting coil 300 when stacked. In addition, multiple adjustment columns 130 are provided in the longitudinal height direction of the adjustment mechanism 100. When the superconducting coils 300 are stacked to a corresponding height, the circumferential angle of the coils can be adjusted by the adjustment columns 130 of the corresponding height. For example, when stacking to the second layer of superconducting coils 300, the adjustment columns 130 corresponding to the height of the second layer of superconducting coils 300 can be used.

[0036] The second adjustment mechanism 200 is arranged on the upper surface of the topmost superconducting coil 300. A supporting belt 240 is arranged around the outside of the second adjustment mechanism 200, and the supporting belt 240 surrounds the superconducting coil 300 and contacts the bottom of the superconducting coil 300. Specifically, the supporting belt 240 is a structure with a certain degree of flexibility and strength, and the supporting belt 240 adopts a thin design. When in use, it is attached to the bottom of the superconducting coil 300, so that the entire coil is wrapped inside the second adjustment mechanism 200, which facilitates the lifting of the superconducting coil 300. At the same time, since the supporting belt 240 is thin, it will not affect the gap between the upper and lower coils. It can be understood that the wrapping here means that from the cross-sectional perspective of the superconducting coil 300, the superconducting coil 300 is wrapped by the second adjustment mechanism 200.

[0037] A hoist (not shown in the figure) is connected to the second adjustment mechanism 200. The hoist is used to lift the second adjustment mechanism 200 so that there is a gap between the uppermost superconducting coil 300 and the superconducting coil 300 below. In some embodiments, the gap is 5 mm. The second adjustment structure is lifted by the hoist, and then the sub-unit coils to be stacked are lifted to adjust the circumferential angle of the superconducting coil 300.

[0038] The adjustment post 130 on the surface of the first adjustment mechanism 100 abuts the surface of the second adjustment mechanism 200. When the top coil is hoisted, the adjustment post 130 extends, causing the second adjustment mechanism 200 and the top coil in contact therewith to move circumferentially. Specifically, the adjustment post 130 of the first adjustment mechanism 100 is pressed against the main surface of the second adjustment mechanism 200. By controlling the extension length of the adjustment post 130, the subunit superconducting coil 300 is rotated slightly circumferentially, aligning the reference characteristic line of the subunit superconducting coil 300 with the characteristic line of the platform. It should be noted that reference characteristic lines are provided on both the stacking platform (i.e., the platform for placing the coils) and the external wrapping of the subunit superconducting coil 300, such as the sidewalls of the glass ribbon. The reference characteristic line can be a machine-drawn vertical line with a distinct color feature, such as a red vertical line.

[0039] refer to Figure 3, the specific structure of the adjustment mechanism 100 is described. The adjustment mechanism 100 includes a support base plate 110, and a column 120 is fixedly provided on the upper surface of the support base plate 110. A plurality of adjustment columns 130 are provided along the longitudinal direction of the column 120, and a protective block is provided at one end of the adjustment column 130. Specifically, the support base plate 110 is set at the bottom. A plurality of threaded holes are provided on the vertical surface of the column 120, and the threaded holes are provided in the horizontal direction, so that the adjustment columns 130 passing through the inside are also in the horizontal direction. When the adjustment column 130 is extended, the sub-unit superconducting coil 300 can be adjusted in the horizontal direction to avoid the superconducting coil 300 from being offset in the longitudinal direction, such as one end being tilted, thereby ensuring the horizontality of the stacked superconducting coil 300. In some embodiments, the adjustment column 130 is an adjustment bolt, and the adjustment bolt is threadedly connected to the threaded hole.

[0040] Please continue to refer to Figure 3 A reinforcing rib is provided on one side of the column 120. The reinforcing rib can improve the strength of the column 120 to a certain extent and reduce the deformation of the column 120. The bottom of the column 120 is fixedly connected to the support base plate 110 by bolts.

[0041] refer to Figure 4 The specific structure of the second adjustment mechanism 200 will be described. The second adjustment mechanism 200 includes a main frame 210. A symmetrically arranged wedge block 220 is provided on at least one side of the main frame 210. A support belt 240 passes under the wedge block 220, wraps around the wedge block 220, and then extends out. A locking member 250 is provided on the upper half of one side of the main frame 210. The ends of the support belt 240 are connected to the ends of the locking member 250. In this embodiment, the symmetrically arranged wedge blocks 220 are provided on both sides of the main frame 210, and the support belt 240 also passes through both sides of the main frame 210. This ensures the stability of the hoist when the coil is hoisted. In other implementations, the wedge block 220 and the support belt 240 can be provided on only one side. The support belt 240 passes through the bottom of the wedge block 220 and wraps around the wedge block 220 before extending out, thereby ensuring the stability of the connection between the support belt 240 and the wedge block 220 and effectively reducing the possibility of the support belt 240 falling off the wedge block 220.

[0042] A locking piece 250 is connected between two symmetrically arranged wedge blocks 220 on the same side of the main frame 210. By adjusting the locking piece 250, the relative distance between the two wedge blocks 220 can be adjusted, thereby adjusting the tension of the support belt 240. The load capacity of the support belt 240 is calculated and load-tested before use to meet the support requirements of the heavy superconducting coil 300. During use, the support belt 240 can be adjusted to a certain tension by adjusting the locking piece 250.

[0043] refer to Figure 2 The wedge block 220 is disposed within the wedge box 230, effectively securing the support belt 240 within the gap between the wedge block 220 and the wedge box 230, thereby effectively improving the stability of securing the support belt 240 to the adjustment mechanism 2 200. The locking member 250 includes a connecting rod 251, with an eyebolt 253 and a pin 252 threadedly connected at both ends of the connecting rod 251. The pin 252 is connected to one end of the wedge block 220, and the eyebolt 253 is connected to the pin 252. In some embodiments, both ends of the connecting rod 251 are threaded. The arrangement of the pin 252 and the eyebolt 253 ensures that even if the wedge block 220 experiences some angular deviation, the rotatability of the pin 252 does not affect the movement of the wedge block 220.

[0044] refer to Figure 4 At least some of the main frame is provided with a chip box 260, which is located below the locking member 250 and the wedge block 220. When the steel strip is cut, the cut debris can be prevented from falling onto the outer surface of the coil, thereby reducing the impact of the debris on the performance of the entire superconducting coil 300. After the support strip 240 is cut, the cut is polished until smooth and burr-free to prevent the burrs at the cut from damaging the glass ribbon wrapped around the outside of the superconducting coil 300. After the support strip 240 is cut, the adjustment mechanism 200 can be recycled. The support strip 240 is a disposable consumable item and can be replaced with a new one the next time it is used.

[0045] refer to Figure 4 At least one side of the main frame 210 is provided with two vertical plates 211. Multiple tensioning plates 212 are provided on the sides of the vertical plates 211. The support belt 240 contacts the ends of the tensioning plates 212, and a chip receiving plate 213 is provided at the bottom of the vertical plates 211. The vertical plates 211 and tensioning plates 212 not only constrain the path of the support belt 240 but also maintain tension on the support belt 240, thereby preventing significant deformation of the support belt 240 when in contact with the coils. This could lead to excessive looseness of the support belt 240 when stacking the superconducting coils 300, thus affecting stacking accuracy. Furthermore, the vertical plates 211, tensioning plates 212, and wedge-shaped boxes 230 provided on both sides of the main frame 210 also enhance the strength of the entire adjustment mechanism 2, preventing the risk of the adjustment mechanism 2 falling off or becoming stuck when lifting heavy superconducting coils 300. The chip receiving plate 213 provided at the bottom of the vertical plate 211 has warped edges of a certain height around it, which can receive the debris and also prevent the debris from falling on the glass ribbon and causing damage to the glass ribbon.

[0046] refer to Figure 4Protective plates 214 are provided on opposing surfaces of the two vertical plates 211, and extend through both sides of the main frame 210. The protective plates 214 are connected to the vertical plates 211 via a plurality of bolts. The extension distance of the protective plates 214 can be controlled by adjusting the extension length of the bolts. This prevents the adjustment mechanism 200 from directly contacting the superconducting coil 300 and causing damage to the superconducting coil 300. Furthermore, the inner and outer contours of the superconducting coil 300 can be adjusted to maintain the shape of the superconducting coil 300. This prevents the coil from rebounding due to its own elasticity, which could affect the contour of the coil and thus affect the precise positioning of the joints of the superconducting coil 300. In some embodiments, the protective plates 214 can be G10 plates. G10 is a composite material made by laminating glass fiber cloth and epoxy resin under high temperature and high pressure. It has the advantages of high strength, insulation, temperature resistance, corrosion resistance, lightness, and machinability.

[0047] Optionally, multiple groups of adjustment mechanisms 100 and adjustment mechanisms 2 200 are provided along the circumference of the superconducting coil 300. Through the cooperation of multiple groups of adjustment mechanisms 100 and adjustment mechanisms 2 200, micro-movement of the heavy-weight superconducting coil 300 can be achieved, avoiding large-scale movement to ensure that the upper and lower coils can be accurately aligned to facilitate subsequent joint welding. At the same time, the cooperation of multiple adjustment mechanisms 100 and adjustment mechanisms 2 200 can keep the coil contour position as much as possible while only realizing circumferential rotation, reducing the number of adjustments and reducing the difficulty of position adjustment during stacking.

[0048] Optionally, the supporting belt 240 is a stainless steel belt. In some other embodiments, the stainless steel belt may also be made of other materials, which are not specifically limited here.

[0049] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A superconducting coil circumferential adjustment device, characterized in that: The first adjusting mechanism comprises a first adjusting mechanism, wherein the first adjusting mechanism has a height matching that of the multi-layer superconducting coil, and the first adjusting mechanism is provided with a plurality of horizontal adjusting columns along its longitudinal direction; A second adjustment mechanism, the second adjustment mechanism being disposed on the upper surface of the uppermost superconducting coil, the second adjustment mechanism being surrounded by a support belt, the support belt surrounding the superconducting coil and contacting the bottom of the superconducting coil; a hoist connected to the second adjusting mechanism, and used to lift the second adjusting mechanism so that a gap exists between the uppermost superconducting coil and the lower superconducting coil; The adjusting column on the surface of the adjusting mechanism 1 contacts the surface of the adjusting mechanism 2. When the uppermost coil is lifted, the adjusting column extends to allow the adjusting mechanism 2 and the uppermost coil in contact therewith to move circumferentially.

2. The superconducting coil circumferential adjustment device according to claim 1, characterized in that: The first adjustment mechanism includes a supporting base plate, a column is fixedly provided on the upper surface of the supporting base plate, a plurality of adjustment columns are arranged on the column along the longitudinal direction, and a protection block is provided at one end of the adjustment column.

3. The superconducting coil circumferential adjustment device according to claim 1, characterized in that: The second adjustment mechanism includes a main frame, and a symmetrically arranged wedge block is provided on at least one side of the main frame. The support belt passes through the bottom of the wedge block and wraps around the wedge block and then extends out. A locking piece is provided on the upper half of one side of the main frame, and the end of the support belt is connected to the two ends of the locking piece.

4. The superconducting coil circumferential adjustment device according to claim 3, characterized in that: The locking member includes a connecting rod, both ends of which are connected with eye bolts and pins, and the eye bolts and pins are connected to the wedge block.

5. The superconducting coil circumferential adjustment device according to claim 3, characterized in that: A chip box is provided on at least one side of the main frame, and the chip box is provided below the locking member.

6. The superconducting coil circumferential adjustment device according to claim 3, characterized in that: Two vertical plates are provided on at least one side of the main frame, a plurality of tensioning plates are provided on the sides of the vertical plates, the supporting belt contacts the ends of the plurality of tensioning plates, and a chip receiving plate is provided on the bottom of the vertical plates.

7. The superconducting coil circumferential adjustment device according to claim 6, characterized in that: Protection plates are provided on opposite surfaces of the two vertical plates. The protection plates are connected to the vertical plates through a plurality of bolts. The protection plates are in contact with side surfaces of the superconducting coil.

8. The superconducting coil circumferential adjustment device according to claim 1, characterized in that: The first regulating mechanism and the second regulating mechanism are both provided in multiple groups along the circumferential direction of the superconducting coil.

9. The superconducting coil circumferential adjustment device according to claim 1, characterized in that: The supporting belt is a stainless steel belt, and after the superconducting coil is adjusted to a preset position, the stainless steel belt is cut and pulled out from one end.

10. The superconducting coil circumferential adjustment device according to claim 1, characterized in that: A reference line is provided on the side of each layer of the superconducting coil.

Images