CN110504098B - Insulation treatment process for superconducting magnet S-bend line root body - Google Patents
Insulation treatment process for superconducting magnet S-bend line root body Download PDFInfo
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- CN110504098B CN110504098B CN201910776517.2A CN201910776517A CN110504098B CN 110504098 B CN110504098 B CN 110504098B CN 201910776517 A CN201910776517 A CN 201910776517A CN 110504098 B CN110504098 B CN 110504098B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/048—Superconductive coils
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/12—Insulating of windings
- H01F41/125—Other insulating structures; Insulating between coil and core, between different winding sections, around the coil
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Abstract
The invention discloses an insulation treatment process for a superconducting magnet S-bent line root, which is characterized in that insulation of the magnet S-bent line root is filled by a G10 filling block, tightly wrapped at the position according to a GKG structure and finally solidified into a whole. A hermetic insulating structure is formed. The invention has the structural characteristics that the special requirements of low temperature and vacuum voltage resistance are required to be met aiming at the wrapping of the insulation treatment of special parts.
Description
Technical Field
The invention relates to the field of poloidal field coils of superconducting magnets of large thermonuclear fusion devices or other large electromagnetic devices, in particular to an insulation treatment process for a superconducting magnet S-bend line root body.
Background
Thermonuclear fusion will provide inexhaustible clean energy for humans, and the international thermonuclear fusion experimental reactor (ITER) project will be built within the next decade. The poloidal field coils provide magnetic confinement for the ITER device, and the PF6 coil is the most important and the heaviest coil in the poloidal field superconducting magnet system of the ITER device. This is the largest-scale superconducting magnet manufactured in china at present, and because the superconducting magnet operates under relatively extreme conditions, the requirement for insulation of the coil is high, and reasonable insulation treatment is more required for parts which are relatively difficult to treat. This is a guarantee to ensure the operation of the device.
Disclosure of Invention
The invention aims to provide an insulation treatment process for a root part of an S-bend line of a superconducting magnet, which realizes the insulation treatment of a special part of a field coil and meets the voltage resistance of the special part.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
an insulation treatment process for a superconducting magnet S-bend line root body is characterized in that: the method comprises the following steps of:
1) semi-laminating a layer of polyimide film on the root of a superconducting magnet S bent wire outlet head by using a polyimide adhesive tape with the width of 50mm, wherein the polyimide film exceeds the edge of the root of the wire outlet head by 100mm, then adhering a layer of glass ribbon film on the polyimide film by using a glass ribbon with the width of 125mm, and fixing the glass ribbon film by using the polyimide adhesive tape, wherein the adhering range of the glass ribbon film exceeds the adhering range of the adhesive polyimide film by 3-10 mm; the semi-lamination is to adhere a polyimide adhesive tape to the part needing to be adhered around the root of the superconducting magnet S bent wire outlet, and the second polyimide adhesive tape needs to cover half of the area of the previous polyimide adhesive tape.
2) And (3) attaching 4 layers of polyimide films and 4 layers of glass ribbon films to the root of the end of the superconducting magnet S bent line according to the steps.
3) And filling blocks are arranged on the outer surface of the superconducting magnet corresponding to the root of the wire outlet head, 2 layers of glass fiber felts with the thickness of 2mm are paved between the filling blocks and the superconducting magnet coil, and the parts adhered with 4 layers of polyimide films and 4 layers of glass fiber tape films are not paved.
4) Carrying out body insulation wrapping on the whole superconducting magnet by using a 50mm wide GKG composite belt, wherein the root of an S-shaped bent outlet of the superconducting magnet is subjected to body insulation wrapping by using a 125mm wide GKG composite belt, and in the body insulation wrapping process, cutting the part, corresponding to the interference of the root of the outlet and the superconducting magnet, of the GKG composite belt by using scissors; the GKG composite belt comprises two glass fiber belt layers and a polyimide film belt layer, and is a sandwich type laminated structure belt which clamps the polyimide film belt layer between the two glass fiber belt layers.
5) After wrapping one layer of GKG composite belt on the whole superconducting magnet, a 125mm wide GKG composite belt is used for covering a part cut by a shear in the process of wrapping body insulation on the root of an S-shaped bent wire outlet of the superconducting magnet in a patching mode, the edge distance of the covered GKG composite belt is larger than 50mm from the cut part, the covered GKG composite belt is fixed by a polyimide adhesive tape, and then the wire outlet is wrapped in a half-stacked insulation mode by the aid of the 50mm wide GKG composite belt from the root of the wire outlet.
6) And repeating the steps from 4) to 5) for nine times to finish the insulation treatment of the superconducting magnet S bent line root body.
The insulation treatment process for the superconducting magnet S-bend line root body is characterized by comprising the following steps: the distances from the outer edge of the polyimide film to the upper edge and the lower edge of the root of the wire outlet head, the left edge and the right edge of the root of the wire outlet head and the edge of the wire outlet head are all 100 mm.
The insulation treatment process for the superconducting magnet S-bend line root body is characterized by comprising the following steps: the insulating block is a G10 insulating block.
The insulation treatment process for the superconducting magnet S-bend line root body is characterized by comprising the following steps: the sizes of the glass fiber tape layers in the 125mm wide GKG composite tape are as follows: 125mm wide and 0.25mm thick; the sizes of the polyimide film belt layer are as follows: 115mm wide and 0.05mm thick; the glass fiber tape layer size of 50mm wide GKG composite tape is: 50mm wide and 0.25mm thick; the size of the polyimide film belt layer is as follows: 40mm wide and 0.025mm thick.
G10 filler blocks were mounted, and 2-mm thick glass fiber mats were placed between the G10 filler blocks and the superconducting magnet coils, so that no gap was present between the G10 filler blocks and the superconducting magnet coils.
The letter G in the GKG composite belt refers to a glass ribbon, the letter K refers to a polyimide film belt, and the composite GKG composite belt is a sandwich type laminated structure belt with G in the upper part and the lower part and K in the middle.
According to the invention, a polyimide film adhesive tape and a glass ribbon are firstly used for pasting treatment at the root of a superconducting magnet outgoing line, then a G10 filling block is used for filling the appearance, a gap and unevenness are filled with a glass fiber felt, and finally a composite GKG composite tape is used for carrying out body insulation wrapping.
The insulating material is formed by compounding a glass ribbon and a polyimide ribbon, the insulating strength and the creepage distance of the root of the wire outlet head are superior to those of other parts, and finally, the wire outlet head is integrally formed through solidification by a vacuum pressure impregnation process.
The invention comprises the following steps:
the invention works in vacuum, low-temperature and high-voltage insulation environments, is suitable for a coil device of a low-temperature superconducting system, and provides an operable scheme for the insulation treatment of the root part of the S bent wire of the superconducting magnet. The invention has better application value in the field of fusion reactors and superconduction.
In fact, as long as the superconducting magnet is expected to be under vacuum and low temperature, the insulation treatment part of the superconducting magnet S bent-out wire root with vacuum and insulation high voltage can refer to the technical scheme of the present invention, but the content of the technical scheme of the present invention is not departed from, and the simple modification, or the equivalent change and modification, of the structure according to the technical essence of the present invention are all within the scope of the technical scheme of the present invention.
The invention has the advantages that:
the invention has simple structure, ensures the requirements on the insulation strength and the size and meets the feasibility on operation.
The application of the invention is as follows:
the present invention has been applied to ITER PF6 coils.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
FIG. 2 is a schematic view of a polyimide film attached to the root of an outlet.
FIG. 3 is a schematic view of the glass ribbon film attached to the root of the outlet of the present invention.
Fig. 4 is a schematic view of the installation of the G10 filler block in the present invention.
Fig. 5 is a schematic view of the body insulation wrap of the present invention.
Fig. 6 is a view showing an insulation structure in the present invention.
Detailed Description
As shown in fig. 6, an insulation treatment process for a superconducting magnet S-bent wire root body includes: superconducting magnet 1, wire outlet root insulation 2, G10 filling block, 3 and body insulation 4. The method comprises the following steps:
an insulation treatment process for a superconducting magnet S-bend line root body is characterized in that: the method comprises the following steps of:
1) semi-laminating a layer of polyimide film 5 on the root of a bent wire outlet head of a superconducting magnet 1S by using a polyimide adhesive tape with the width of 50mm, wherein the polyimide film 5 exceeds the edge of the root of the wire outlet head by 100mm, then adhering a layer of glass ribbon film 6 on the polyimide film by using a glass ribbon with the width of 125mm, and fixing the glass ribbon film by using the polyimide adhesive tape, wherein the adhering range of the glass ribbon film 6 exceeds the adhering range of the adhesive polyimide film by 3-10 mm; the semi-lamination is to adhere a polyimide adhesive tape to the part needing to be adhered around the root of the superconducting magnet 1S bent wire outlet, and the second polyimide adhesive tape needs to cover half of the area of the previous polyimide adhesive tape.
2) And 4 layers of polyimide films 5 and 4 layers of glass ribbon films 6 are stuck to the root of the head of the bent line of the superconducting magnet 1S according to the steps, and the 4 layers of polyimide films 5 and 4 layers of glass ribbon films 6 form the head root insulation 2.
3) G10 filling blocks 3 are arranged on the outer surface of the superconducting magnet 1 corresponding to the root of the wire outlet head, 2 layers of glass fiber felts 7 with the thickness of 2mm are paved between the filling blocks 3 and the superconducting magnet coil 1, and the parts adhered with 4 layers of polyimide films and 4 layers of glass fiber tape films are not paved.
4) Carrying out body insulation wrapping on the whole superconducting magnet by using a 50mm wide GKG composite belt, wherein the root of an S-bend outlet of the superconducting magnet is subjected to body insulation wrapping by using a 125mm wide GKG composite belt 8, and in the body insulation wrapping process, cutting the part, corresponding to the interference of the root of the outlet, of the GKG composite belt 8 with the superconducting magnet by using scissors; the GKG composite belt 8 comprises two layers of glass fiber belt layers and a polyimide film belt layer, and the GKG composite belt 8 is a sandwich type laminated structure belt which clamps the polyimide film belt layer between the two layers of glass fiber belt layers.
5) After wrapping one layer of GKG composite belt on the whole superconducting magnet, a 125mm wide GKG composite belt is used for covering a part cut by a shear in the process of wrapping body insulation on the root of an S-shaped bent wire outlet of the superconducting magnet in a patching mode, the edge distance of the covered GKG composite belt is larger than 50mm from the cut part, the covered GKG composite belt is fixed by a polyimide adhesive tape, and then the wire outlet is wrapped in a half-stacked insulation mode by the aid of the 50mm wide GKG composite belt from the root of the wire outlet.
6) And repeating the steps from 4) to 5) for nine times to finish the insulation 4 treatment of the superconducting magnet S bent line root body.
Claims (3)
1. An insulation treatment process for a superconducting magnet S-bend line root body is characterized in that: the method comprises the following steps of:
(1) semi-laminating a layer of polyimide film on the root of a superconducting magnet S bent wire outlet head by using a polyimide adhesive tape with the width of 50mm, wherein the polyimide film exceeds the edge of the root of the wire outlet head by 100mm, then adhering a layer of glass ribbon film on the polyimide film by using a glass ribbon with the width of 125mm, and fixing the glass ribbon film by using the polyimide adhesive tape, wherein the adhering range of the glass ribbon film exceeds the adhering range of the adhesive polyimide film by 3-10 mm; the half-lamination is to adhere a polyimide adhesive tape to the part needing to be adhered around the root of the superconducting magnet S bent wire outlet, and the second polyimide adhesive tape is adhered to cover half of the area of the previous polyimide adhesive tape;
(2) sticking 4 layers of polyimide films and 4 layers of glass ribbon films on the root of the superconducting magnet S bent line head according to the steps;
(3) filling blocks are arranged on the outer surface of the superconducting magnet corresponding to the root of the wire outlet head, 2 layers of glass fiber felts with the thickness of 2mm are paved between the filling blocks and the superconducting magnet coil, and the parts adhered with 4 layers of polyimide films and 4 layers of glass fiber tape films are not paved;
(4) carrying out body insulation wrapping on the whole superconducting magnet by using a 50mm wide GKG composite belt, wherein the root of an S-shaped bent wire outlet head of the superconducting magnet is subjected to body insulation wrapping by using a 125mm wide GKG composite belt, and in the body insulation wrapping process, cutting the part, corresponding to the wire outlet head root, of the GKG composite belt, which is interfered with the superconducting magnet by using scissors; the GKG composite belt comprises two glass fiber belt layers and a polyimide film belt layer, and is a sandwich type laminated structure belt which clamps the polyimide film belt layer between the two glass fiber belt layers;
(5) after wrapping a layer of GKG composite belt on the whole superconducting magnet, performing patching type covering on a part cut by a shear in the process of wrapping the body insulation at the root of an S-shaped bent wire outlet of the superconducting magnet by using a 125mm wide GKG composite belt, fixing the covered GKG composite belt with a polyimide adhesive tape, and performing half-stacking insulation wrapping on the wire outlet by using a 50mm wide GKG composite belt from the root of the wire outlet;
(6) and (5) repeating the steps from (4) to (5) nine times to finish the insulation treatment of the root part of the superconducting magnet S bent line.
2. The insulation treatment process for the superconducting magnet S-bend line root body as claimed in claim 1, wherein: the distances from the outer edge of the polyimide film to the upper edge and the lower edge of the root of the wire outlet head, the left edge and the right edge of the root of the wire outlet head and the edge of the wire outlet head are all 100 mm.
3. The insulation treatment process for the superconducting magnet S-bend line root body as claimed in claim 1, wherein: the sizes of the glass fiber tape layers in the 125mm wide GKG composite tape are as follows: 125mm wide and 0.25mm thick; the sizes of the polyimide film belt layer are as follows: 115mm wide and 0.05mm thick; the glass fiber tape layer size of 50mm wide GKG composite tape is: 50mm wide and 0.25mm thick; the size of the polyimide film belt layer is as follows: 40mm wide and 0.025mm thick.
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| CN115621040B (en) * | 2022-11-18 | 2023-03-21 | 中国科学院合肥物质科学研究院 | Insulation repair structure and repair method for helium inlet and outlet pipes of superconducting magnet coil |
| CN115966396B (en) * | 2023-03-17 | 2023-05-12 | 中国科学院合肥物质科学研究院 | Insulation treatment method for double joints of superconducting magnet |
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| CN109109407A (en) * | 2018-08-01 | 2019-01-01 | 中材科技股份有限公司 | A kind of insulating composite material and preparation method thereof |
| CN109755015A (en) * | 2018-12-25 | 2019-05-14 | 中国科学院合肥物质科学研究院 | A kind of insulating treatment process of the superconducting magnet leading-out terminal of Y type end construction |
| CN110047624A (en) * | 2019-04-23 | 2019-07-23 | 北京原力辰超导技术有限公司 | A kind of superconduction cable |
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| CN102928718B (en) * | 2012-11-06 | 2015-06-24 | 华北电力大学 | Superconductivity insulation material electrical characteristic test device |
| KR101547204B1 (en) * | 2014-10-20 | 2015-08-25 | 고려대학교 산학협력단 | Apparatus for epoxy impregnation of no-insulation HTS coil, and method thereof |
| CN107365498B (en) * | 2017-08-07 | 2019-12-17 | 中国科学院理化技术研究所 | high-temperature forming insulating material for superconducting magnet and preparation method thereof |
| CN109273244B (en) * | 2018-10-09 | 2020-08-21 | 合肥聚能电物理高技术开发有限公司 | Winding process of superconducting CICC cylindrical coil |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109109407A (en) * | 2018-08-01 | 2019-01-01 | 中材科技股份有限公司 | A kind of insulating composite material and preparation method thereof |
| CN109755015A (en) * | 2018-12-25 | 2019-05-14 | 中国科学院合肥物质科学研究院 | A kind of insulating treatment process of the superconducting magnet leading-out terminal of Y type end construction |
| CN110047624A (en) * | 2019-04-23 | 2019-07-23 | 北京原力辰超导技术有限公司 | A kind of superconduction cable |
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