CN112466592B - Water-cooling coil wound by copper strips and manufacturing process thereof - Google Patents
Water-cooling coil wound by copper strips and manufacturing process thereof Download PDFInfo
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- CN112466592B CN112466592B CN202011473727.3A CN202011473727A CN112466592B CN 112466592 B CN112466592 B CN 112466592B CN 202011473727 A CN202011473727 A CN 202011473727A CN 112466592 B CN112466592 B CN 112466592B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
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- H01F5/00—Coils
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2847—Sheets; Strips
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2876—Cooling
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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
- H01F41/06—Coil winding
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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
- H01F41/06—Coil winding
- H01F41/061—Winding flat conductive wires or sheets
- H01F41/063—Winding flat conductive wires or sheets with insulation
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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
- H01F41/06—Coil winding
- H01F41/076—Forming taps or terminals while winding, e.g. by wrapping or soldering the wire onto pins, or by directly forming terminals from the wire
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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
- H01F41/122—Insulating between turns or between winding layers
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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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- 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
- H01F41/127—Encapsulating or impregnating
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2847—Sheets; Strips
- H01F2027/2857—Coil formed from wound foil conductor
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Abstract
The invention discloses a copper strip wound water-cooling coil and a manufacturing process thereof, wherein the coil sequentially comprises a first water-cooling component, a first single-pancake winding, a second water-cooling component, a second single-pancake winding and a third water-cooling component from bottom to top; the water cooling component consists of a water cooling plate and a water cooling pipe, and the single-cake winding is formed by winding an oxygen-free copper strip. The single-cake winding is wound by a die according to a conventional winding method; an annular groove used for fixing the water-cooling pipe is formed in the cold plate, and the water-cooling pipe is clamped in the annular groove. The invention has the advantages of good structural stability, simpler processing, small shape dimension and shape error, small occupied space and capability of greatly reducing the size of the product, thereby reducing the manufacturing cost; in the aspect of product use, can use under heavy current, the low frequency, the cooling water takes away the heat that produces after passing through water cooling assembly with the coil circular telegram, has reached the purpose that reduces coil operating temperature.
Description
Technical Field
The invention belongs to the technical field of coil manufacturing, and particularly relates to a water-cooling coil wound by a copper strip and a manufacturing process thereof.
Background
An electromagnet is a device which generates electromagnetism when being electrified, and has magnetism when being electrified and disappears after being powered off. In general, the magnetic field generated by an electromagnet is related to the magnitude of the current, the number of turns of the coil and the ferromagnetic body in the center. When designing electromagnets, the distribution of the coils and the selection of the ferromagnet are emphasized and the magnitude of the current is used to control the magnetic field.
The coil is a key component in the electromagnet equipment, determines the intensity of the magnetic field to a certain extent, and has different coil structures and characteristics in different application occasions. At present, the manufacturing technology for producing the conventional coil by using the common copper wire material is mature, and the coil is generally large in size and small in working load current. However, in the semiconductor industry, the magnet is required to be small in size and large in working current, and the coil made of the conventional copper wire material cannot meet the requirements of the semiconductor industry on the coil.
Disclosure of Invention
The invention provides a water-cooling coil wound by a copper strip and a manufacturing process thereof, and aims to solve the problems that the size of an electromagnet is small, the current is large, and the conventional electromagnet processing process is difficult to meet the requirements in the semiconductor industry.
Therefore, the invention adopts the following technical scheme:
a water-cooling coil wound by a copper strip comprises a first water-cooling assembly, a first single-pancake winding, a second water-cooling assembly, a second single-pancake winding and a third water-cooling assembly from bottom to top in sequence; the water cooling component consists of a water cooling plate and a water cooling pipe, and the single-cake winding is formed by winding an oxygen-free copper strip.
Furthermore, the water cooling plate is made of LY12 hard aluminum, and the water cooling pipe is made of T2 copper.
Further, the single-cake winding is made of a TU2 copper material.
A manufacturing process of a water-cooling coil wound by a copper strip comprises the following steps:
(1) treating raw materials of the single-cake winding: selecting an oxygen-free copper strip with a corresponding specification as a raw material according to the size of the coil, and cleaning the surface of the oxygen-free copper strip to remove dust and oil dirt which affect the insulating property;
(2) winding of a single cake winding: before winding, a polyimide film is half-lapped and wrapped on the surface of an oxygen-free copper strip, then an alkali-free glass ribbon is half-lapped and wrapped, and the polyimide film and the alkali-free glass ribbon are used as turn-to-turn insulation of a single-cake winding;
winding the single-cake windings by using a die, wherein the first single-cake winding is wound clockwise, and the second single-cake winding is wound anticlockwise; the wound single-cake winding is half-lapped with a layer of alkali-free glass ribbon to be used as ground insulation of the single-cake winding; then, respectively welding conductive blocks at the positions of the wire starting head at the inner side of the winding and the wire outlet head at the outer side of the winding to be used as an electric connection seat;
(3) preparing a water-cooling assembly: forming an annular groove on the water cooling plate, bending and molding the water cooling pipe according to the trend of the annular groove, embedding the water cooling pipe into the annular groove to ensure the surface of the water cooling plate to be flat, and then welding and fixing the water cooling pipe and the water cooling plate;
(4) assembling and forming a coil: the coil comprises two water-cooling coils, namely a first coil and a second coil, the first coil is assembled from bottom to top according to the sequence of a first water-cooling assembly, a first single cake winding, a second water-cooling assembly, a second single cake winding and a third water-cooling assembly, and the assembly of the second coil is completed according to the same method;
half-overlapping a layer of the first coil and a layer of the second coil by using an alkali-free glass ribbon to serve as ground insulation, and then performing vacuum casting on the first coil and the second coil integrally by using epoxy resin;
(5) coil testing and checking: and after the coil is poured, performing ground pressure resistance test, welding a cooling water connecting seat after the test is qualified, and then warehousing and storing.
Furthermore, the oxygen-free copper strip in the step (1) is in a specification of 50mm multiplied by 1.2mm, the width meets 50mm +/-0.1 mm, and the thickness meets 1.2mm +/-0.05 mm.
Further, in the step (4), during assembly, heat-conducting glue is injected between the single-cake winding and the water cooling assembly, so that the heat conductivity between the winding and the water cooling assembly is increased.
Further, in the step (4), the water cooling pipe and the water cooling plate are welded by brazing, the surface is cleaned after welding, and the flatness of the water cooling plate and the water cooling pipe is not more than 0.3 mm.
The invention has the beneficial effects that: the coil produced by the process has small volume, can effectively reduce occupied space and meet the requirement of the semiconductor industry on the coil with small volume; the water cooling assembly can ensure that the coil can stably work under high current and low frequency, effectively improve the quality of the electromagnet and prolong the service life; in addition, the coil also has the advantages of good structural stability, simple processing technology and low production and use cost.
Drawings
FIG. 1 is a schematic diagram of the outline structure of a water-cooling coil;
FIG. 2 is a schematic diagram of a single pancake winding;
FIG. 3 is a schematic structural diagram of an annular groove of the water-cooling plate;
FIG. 4 is a schematic view of a water-cooled tube after bending and forming;
FIG. 5 is a schematic view of the structure of the water cooling pipe mounted to the water cooling plate;
in the figure: 1-a first water-cooled assembly; 2-a first single-pancake winding, 3-a second water-cooling assembly, 4-a second single-pancake winding, 5-a third water-cooling assembly, 6-an inner conductive seat, 7-an electric connection copper bar, 8-an electric connection seat, 9-a cooling water connection seat, 10-an outer conductive seat, 11-a water-cooling plate, 12-an annular groove and 13-a water-cooling pipe.
Detailed Description
The invention will be further described with reference to the accompanying drawings in which:
a water-cooling coil wound by a copper strip comprises a first water-cooling component 1, a first single-cake winding 2, a second water-cooling component 3, a second single-cake winding 4 and a third water-cooling component 5 from bottom to top in sequence. The water-cooling assembly is composed of a water-cooling plate 11 and a water-cooling pipe 13, wherein the water-cooling plate 11 is made of LY12 hard aluminum materials, and the water-cooling pipe 13 is made of T2 copper materials. An annular groove 12 for fixing a water-cooling pipe 13 is formed in the water-cooling plate 11, and the water-cooling pipe 13 is clamped in the annular groove 12. The cross section of the water cooling pipe 13 is square, a round hole is formed in the center of the water cooling pipe, and a cooling water flow channel is formed by the round hole in the center; and each winding is made of TU2 oxygen-free copper strip.
A manufacturing process of a water-cooling coil wound by a copper strip comprises the following steps:
(1) treating raw materials of the single-cake winding: selecting a TU2 oxygen-free copper strip with the thickness of 50mm multiplied by 1.2mm as a raw material, ensuring that the width meets 50mm +/-0.1 mm and the thickness meets 1.2mm +/-0.05 mm; and then cleaning the surface of the oxygen-free copper strip by using alcohol to remove dust, oil stains and the like which influence the insulating property.
(2) Winding of a single cake winding: before winding, a polyimide film with the thickness of 0.05mm is half-lapped and wrapped on the surface of an oxygen-free copper strip, then an alkali-free glass ribbon with the thickness of 0.1mm is half-lapped and wrapped, and the polyimide film and the alkali-free glass ribbon are used as turn-to-turn insulation of the single-cake winding;
winding the single-cake windings by using a die, wherein the first single-cake winding 2 is wound clockwise, the second single-cake winding 4 is wound anticlockwise, and two cakes are wound respectively; and half-lapping the wound single-cake winding with a layer of alkali-free glass ribbon with the thickness of 0.1mm to serve as ground insulation of the single-cake winding.
(3) Preparing a water-cooling assembly: an aluminum plate with the thickness of 8mm is selected as a water cooling plate 11, and an annular groove 12 is formed in the water cooling plate 11 through a numerical control machine according to a design drawing. The width of the groove is 8mm, and the depth is 7.3 mm;
the patency needs to be detected before the water-cooled tube 13 is installed, and the method comprises the following steps: introducing compressed air into the water-cooling pipe 13, and blowing out impurities in the water-cooling pipe 13; and then carrying out a hydrostatic test on the water-cooled tube 13 to ensure that the cooling water tube has no water leakage under the pressure of 3 MPa. Then using sand paper to polish and remove an oxide layer on the surface, and using alcohol to scrub and remove residues such as oil stains, powder and the like on the surface;
then, the water cooling pipe 13 is bent and molded according to the trend of the annular groove 12 and is embedded into the annular groove 12, and then the water cooling pipe 13 and the water cooling plate 11 are fixed through brazing welding. And after welding, the joint is polished to be smooth, and the flatness of the surface of the water cooling plate 11 is not more than 0.3 mm.
(4) Assembling and forming a coil: the coil comprises two water-cooling coils, namely a first coil and a second coil, wherein the first coil is assembled from bottom to top according to the sequence of a first water-cooling assembly 1, a first single-cake winding 2, a second water-cooling assembly 3, a second single-cake winding 4 and a third water-cooling assembly 5.
Two inner conductive seats 6 are arranged on the inner side of the coil and are respectively welded at the copper strip starting positions of the first single-pancake winding 2 and the second single-pancake winding 4, and an electric connection copper bar 7 connects the first single-pancake winding 2 and the second single-pancake winding 4 in series through the two inner conductive seats 6. Similarly, two outer conductive seats 10 are arranged on the outer side of the coil, are respectively welded at the ends of the copper strips of the first single-pancake winding 2 and the second single-pancake winding 4, are respectively used for connecting the first coil and the second coil in series, and are then connected with the positive electrode and the negative electrode of a power supply. The inner conductive socket 6 and the outer conductive socket 10 form an electrical connection socket 8 for connecting a circuit in use.
During assembly, heat-conducting glue with the heat conductivity coefficient larger than 1 watt/meter is injected between the single-cake winding and the water cooling assembly to increase the heat conductivity between the winding and the water cooling assembly, and then the assembly of the second coil is completed according to the same method;
and then using an alkali-free glass ribbon with the thickness of 0.1mm to half-lap a layer of the first coil and the second coil to be used as ground insulation, and then using epoxy resin to perform vacuum casting on the whole of the first coil and the second coil.
(6) Coil testing and checking: and (3) carrying out ground pressure resistance test after the coil is poured: voltage DC1500V, time 1 minute; and coil turn-to-turn voltage resistance test: voltage DC1000V, time 1 minute; and (3) testing water pressure of a coil: the water pressure is 1.5Mpa, and the pressure maintaining time is 1 hour; and welding a cooling water connecting seat 9 after the test is qualified, and then warehousing and storing.
It should be noted that the above are only some embodiments of the present invention, and it should be noted that, for those skilled in the art, many modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (6)
1. A water-cooling coil wound by a copper strip is characterized by sequentially comprising a first water-cooling component, a first single-pancake winding, a second water-cooling component, a second single-pancake winding and a third water-cooling component from bottom to top; the water-cooling assembly consists of a water-cooling plate and a water-cooling pipe, the single-cake winding is formed by winding an oxygen-free copper strip, and the manufacturing process of the water-cooling coil comprises the following steps:
(1) treating raw materials of the single-cake winding: selecting an oxygen-free copper strip with a corresponding specification as a raw material according to the size of the coil, and cleaning the surface of the oxygen-free copper strip to remove dust and oil dirt which affect the insulating property;
(2) winding of a single cake winding: before winding, a polyimide film is half-lapped and wrapped on the surface of an oxygen-free copper strip, then an alkali-free glass ribbon is half-lapped and wrapped, and the polyimide film and the alkali-free glass ribbon are used as turn-to-turn insulation of a single-cake winding;
winding the single-cake windings by using a die, wherein the first single-cake winding is wound clockwise, and the second single-cake winding is wound anticlockwise, and two cakes are wound respectively; the wound single-cake winding is half-lapped with a layer of alkali-free glass ribbon to be used as ground insulation of the single-cake winding; then, respectively welding conductive blocks at the positions of the wire starting head at the inner side of the winding and the wire outlet head at the outer side of the winding to be used as an electric connection seat;
(3) preparing a water-cooling assembly: forming an annular groove on the water cooling plate, bending and molding the water cooling pipe according to the trend of the annular groove, embedding the water cooling pipe into the annular groove to ensure the surface of the water cooling plate to be flat, and then welding and fixing the water cooling pipe and the water cooling plate;
(4) assembling and forming a coil: the coil comprises two water-cooling coils, namely a first coil and a second coil, the first coil is assembled from bottom to top according to the sequence of a first water-cooling assembly, a first single cake winding, a second water-cooling assembly, a second single cake winding and a third water-cooling assembly, and the assembly of the second coil is completed according to the same method;
half-overlapping a layer of the first coil and a layer of the second coil by using an alkali-free glass ribbon to serve as ground insulation, and then performing vacuum casting on the first coil and the second coil integrally by using epoxy resin;
(5) coil testing and checking: and after the coil is poured, performing ground pressure resistance test, welding a cooling water connecting seat after the test is qualified, and then warehousing and storing.
2. The water-cooling coil wound by the copper strip as claimed in claim 1, wherein the oxygen-free copper strip in the step (1) is 50mm x 1.2mm in specification, the width of the oxygen-free copper strip meets 50mm +/-0.1 mm, and the thickness of the oxygen-free copper strip meets 1.2mm +/-0.05 mm.
3. The copper strip wound water-cooling coil as claimed in claim 1, wherein in step (4), a heat conducting glue is injected between the single-pancake winding and the water-cooling component during assembly to increase the heat conductivity between the winding and the water-cooling component.
4. The copper strip wound water-cooling coil as claimed in claim 1, wherein in the step (4), the water-cooling tube and the water-cooling plate are welded by brazing, the surface of the water-cooling tube and the water-cooling plate is cleaned after welding, and the flatness of the water-cooling plate and the water-cooling tube is not more than 0.3 mm.
5. The copper strip wound water-cooled coil of claim 1, wherein the water-cooled plate is made of LY12 hard aluminum, and the water-cooled tube is made of T2 copper.
6. The copper strip wound water-cooled coil of claim 1, wherein said single-pancake winding is a TU2 copper.
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| CN202011473727.3A CN112466592B (en) | 2020-12-15 | 2020-12-15 | Water-cooling coil wound by copper strips and manufacturing process thereof |
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| CN202011473727.3A CN112466592B (en) | 2020-12-15 | 2020-12-15 | Water-cooling coil wound by copper strips and manufacturing process thereof |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101090214A (en) * | 2007-05-18 | 2007-12-19 | 冯春国 | Stator winding of cylinder submersible linear electric machine with oil and its winding method |
| CN109166725A (en) * | 2018-07-25 | 2019-01-08 | 中国科学院合肥物质科学研究院 | A kind of high-temperature superconducting magnet winding method |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1317807C (en) * | 2004-12-13 | 2007-05-23 | 苏州试验仪器总厂 | Novel method for winding of water cooling exciting coil |
| CN201273854Y (en) * | 2008-03-24 | 2009-07-15 | 苏州东菱振动试验仪器有限公司 | Water cooling energizing coil having encapsulation structure |
| CN202150315U (en) * | 2011-07-25 | 2012-02-22 | 苏州天宁换热器有限公司 | Water-cooling plate for transformer or reactor |
| EP3553797B1 (en) * | 2018-04-13 | 2022-04-20 | Institute for Plasma Research | A method of manufacturing radio frequency (rf) coil multi-driver rf based ion source |
| CN209691506U (en) * | 2019-05-10 | 2019-11-26 | 佛山市万达业机械股份有限公司 | A kind of electromagnetic spool device and magnetic separator |
| CN210272048U (en) * | 2019-06-18 | 2020-04-07 | 湖南华成迈创电子科技有限公司 | Liquid cooling high-voltage high-power inductor |
| CN209962820U (en) * | 2019-09-24 | 2020-01-17 | 常州市光辉变压器制造有限公司 | Insulated high-voltage coil winding for transformer |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101090214A (en) * | 2007-05-18 | 2007-12-19 | 冯春国 | Stator winding of cylinder submersible linear electric machine with oil and its winding method |
| CN109166725A (en) * | 2018-07-25 | 2019-01-08 | 中国科学院合肥物质科学研究院 | A kind of high-temperature superconducting magnet winding method |
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