DEPOSITION SYSTEM FOR WINDING OF LARGE-SCALE SUPERCONDUCTING MAGNET COILS

Abstract

A deposition system for winding of a large-scale superconducting magnet coil. First and second conductor supports withstand the weight of a bent conductor and allow the conductor to be lowered down in spiral and be placed smoothly onto a rotary table. The rotary table bears the weight of coils, rotates according to a contour of the coil and forwarding speed of the conductor, and tracks the winding trajectory of the coil accurately, which avoids the extra stress induced onto the conductor. The conductor placed on the rotary table is reliably clamped by clamping fixtures and adjustable rod to ensure the conductors to be placed on correct radial and toroidal positions. After treated by the deposition system, the conductor is placed to a corresponding position on the rotary table smoothly and accurately to achieve a high-precision contour control of the coil.

Claims

1. A deposition system for winding of a large-scale superconducting magnet coil, comprising: a rotary table which is annular; wherein a gantry frame is located across inner and outer sides of the rotary table in a radial direction of the rotary table; a bending head is mounted on the gantry frame; a first conductor support and a second conductor support are respectively located at an angular position of 30, relative to a center line of the gantry frame, in a clockwise direction on the rotary table; a set of external winding moulds are spaced apart on an outer circumference of the rotary table; a set of internal winding moulds are spaced apart on an inner circumference of the rotary table; a first main clamping fixture is provided on each of the external winding moulds; a second main clamping fixture is provided on each of the internal winding moulds; and an adjustable rod is provided to work together with the second main clamping fixture; and a plurality of auxiliary clamping fixtures spaced apart are provided on the inner and outer circumferences of the rotary table, respectively.

2. The deposition system of claim 1, wherein the first conductor support and the second conductor support each have a gantry structure and each comprise two support columns which are adjustable in height; and a roller which is made of nylon is mounted on a top of the gantry structure to take the weight of a conductor.

3. The deposition system of claim 1, wherein the internal winding moulds and the external winding moulds are L-shaped structures.

4. The deposition system of claim 1, wherein the auxiliary clamping fixtures are a plurality of clamping blocks arranged along the radial direction of the rotary table.

5. The deposition system of claim 1, wherein the first main clamping fixture and the second clamping fixture have a similar structure, and each comprise a support base and a toggle clamp; the first main clamping fixture is fixed on each of the external winding moulds via a bolt, and the second main clamping fixture is fixed on each of the internal winding moulds via a bolt.

6. The deposition system of claim 5, wherein one end of the adjustable rod is contacted with a conductor, and the other end of the adjustable rod is contacted with the toggle clamp of the second main clamping fixture through an adjusting bolt of the adjustable toggle.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0019] FIG. 1 is a top view of a deposition system for winding of a large-scale superconducting magnet coil according to an embodiment of the present disclosure.

[0020] FIG. 2 is a side view of the deposition system according to an embodiment of the present disclosure.

[0021] FIG. 3 is a partial enlarged top view of the deposition system according to an embodiment of the present disclosure.

[0022] FIG. 4 is a partial enlarged side view of the deposition system according to an embodiment of the present disclosure.

[0023] FIG. 5 is a schematic diagram of a main clamping fixture of the deposition system according to an embodiment of the present disclosure.

[0024] FIG. 6 is an enlarged view of portion A in FIG. 1.

[0025] FIG. 7 is an enlarged view of portion B in FIG. 2.

DETAILED DESCRIPTION OF EMBODIMENTS

[0026] As shown in FIGS. 1-3 and 5-7, the embodiment provides a deposition system for winding of a large-scale superconducting magnet coil, including: a rotary table 1 which is annular. A gantry frame 2 is located across inner and outer sides of the rotary table in a radial direction; a bending head 3 is mounted on the gantry frame 2; a first conductor support 4 is provided crossing the inner and (miter sides of the rotary table 1 at an angular position of 30 in a clockwise direction, relative to a center line of the gantry frame 2; a second conductor support 5 is provided crossing inner and (miter sides of the rotary table 1 at an angular position of 120 in a clockwise direction, relative to the center line of the gantry frame 2.

[0027] A set of external winding moulds 6 spaced apart are provided bolting on the outer circumference of the rotary table 1; a set of internal winding moulds 7 spaced apart are provided bolting on the inner circumference of the rotary table 1; a first main clamping fixture is provided bolting on the external winding moulds; a second main clamping fixture is provided bolting on the internal winding moulds.

[0028] An adjustable rod 10 is provided contacting with the second main clamping fixture 7; a set of auxiliary clamping fixtures 11 spaced apart are provided bolting on the inner and external circumferences of the rotary table 1, respectively.

[0029] In some embodiments, the first conductor support 4 and second conductor support 5 each have a gantry structure and include two height adjustable columns. A roller made of nylon is mounted on the top of the gantry structure to take the weight of a conductor.

[0030] As shown in FIG. 4, the external winding moulds 6 and the internal winding moulds 7 are L-shaped plates.

[0031] As shown in FIG. 4, the auxiliary clamping fixtures 11 are clamping blocks 12 arranged along a radial direction of the rotary table 1, and the clamping is achieved by removing or adding the clamping blocks 12.

[0032] As shown in FIG. 5, the first main clamping fixture 8 and the second clamping fixture 9 have a similar structure, and include a support base 14 and a toggle clamp 15 fixed on the support base 14, respectively. The first main clamping fixture 8 is bolted on the external winding moulds 6, and the second main clamping fixture 9 is bolted on the internal winding moulds 7.

[0033] In some embodiments, one end of the adjustable rod 10 is contacted with the toggle clamp of the second main clamping fixture 9 via an adjustable bolt of the toggle clamp. The adjustable rod 10 achieves forward and backward movements through an adjusting bolt of the toggle clamp.

[0034] During the winding of coils, a conductor 13 is bent through the bending head 3, and each torn of the bent conductor 13 is reliably placed through the deposition system, achieving a high-precision contour control of the coils.

[0035] The rotary table 1 withstands the weight of coils and rotates according to the contour of the coils and forwarding speed of the conductor 13 to track the winding trajectory of the coils accurately and avoid extra stress induced onto the conductor 13 during the molding. The external winding moulds 6 and the internal winding moulds 7 are made of stainless steel and have high-precision contours. The external winding moulds 6 and the internal winding moulds 7 are connected to the rotary table 1 via bolts and realize an accurate positioning through cylindrical pins, ensuring a required coil contour of the wound coils.

[0036] The first main clamping fixture 8 is provided on each of the external winding moulds 6; and the second main clamping fixture 9 is provided on each of the internal winding moulds 7. The conductor 13 placed on the rotary table 1 is reliably clamped by the first main clamping fixture 8, the second main clamping fixture 9 and the adjustable rod 10, which ensures the conductor 13 to be placed on correct radial positions. The auxiliary clamping fixtures 11 allow the conductor 13 of the outermost and innermost turns to enter the inner and external winding moulds smoothly.

[0037] Taking the winding of the coils in a first layer as an example, the bent conductor 13 is treated by the deposition system according to the following steps.

[0038] 1) The rotary table 1 rotates clockwise according to a contour of the coils and a forwarding speed of the conductor 13 to track the winding trajectory of the coils.

[0039] 2) The first conductor support 4 and the second conductor support 5 withstand the weight of the conductor 13 and allow the conductor 13 to be lowered down in spiral and be placed smoothly onto the rotary table 1.

[0040] 3) When a bent section of the conductor 13 arrives at an angular position of 300, relative to a center line of the gantry frame 2, in a clockwise direction on the rotary table 1, the conductor starts to be deposited. The second main clamping fixture 9 and the adjustable rod 10 are adjusted to reliably clamp a first turn of the conductor 13 with the external winding moulds 6. A first space between the conductor 13 and the external winding moulds 6 is measured via a feeler gauge, and is ensured to be not more than 0.2 mm.

[0041] 4) The conductor 13 is fed continually till the deposition of the first turn of the conductor 13 is completed.

[0042] 5) The conductor 13 is fed continually. The second main clamping fixture 9 and the adjustable rod 10 are adjusted to reliably clamp a second turn of the conductor 13 with the first turn of the conductor 13 and the external winding moulds 6. A second space between the second turn of the conductor 13 and the external winding moulds 6 is measured via a vernier caliper, and a deviation between the second space and a theoretical dimension is ensured to be not more than 0.5 mm.

[0043] 6) The conductor 13 is fed continually. The second main clamping fixture 9 and the adjustable rod 10 are adjusted to reliably clamp an nth turn of the conductor 13 with a (n1)th turn of the conductor 13 and the external winding moulds 6. An nth space between the nth turn of the conductor 13 and the external winding moulds 6 is measured by the vernier caliper, and a deviation between the nth space and a theoretical dimension is ensured to be not more than 0.5 mm.

[0044] 7) Step 6 is repeated till the last turn of the conductor 13 in the first layer starts to be deposited.

[0045] 8) The internal winding moulds 7 are disassembled gradually.

[0046] The conductor 13 is fed continually. The auxiliary clamping fixtures 11 at the inner circumference of the rotary table are adjusted to reliably clamp the last torn of the conductor 13 with the deposited turns of the conductors 13 and the external winding moulds 6. The internal winding moulds 7 are assembled gradually until the last turn of the conductor 13 in the first layer is deposited and all the internal winding moulds 7 are assembled completely. The winding of the coils in the first layer is ended.

[0047] The technical solutions of the present disclosure can be used for reference as long as a high-precision molding process of each turn of the conductor 13 is expected during the winding of coils. Any simple modification or equivalent variation made without departing from the spirit of the present disclosure should fall within the scope of the disclosure.