CN109950040B - Method for manufacturing cone-shaped glue-free secondary coil based on wet forming process and coil - Google Patents
Method for manufacturing cone-shaped glue-free secondary coil based on wet forming process and coil Download PDFInfo
- Publication number
- CN109950040B CN109950040B CN201910181108.8A CN201910181108A CN109950040B CN 109950040 B CN109950040 B CN 109950040B CN 201910181108 A CN201910181108 A CN 201910181108A CN 109950040 B CN109950040 B CN 109950040B
- Authority
- CN
- China
- Prior art keywords
- paper
- cone
- coil
- manufacturing
- winding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Manufacturing Cores, Coils, And Magnets (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
The invention relates to a secondary coil of a high-voltage pulse transformer, and provides a method for manufacturing a conical glue-free secondary coil based on a wet forming process and the coil, aiming at the defects that the existing glue-free secondary coil is complex in manufacturing process, long in manufacturing period, low in practicability and difficult to meet the actual working requirement. The method for manufacturing the conical glue-free secondary coil based on the wet forming process comprises the following steps of: 1) manufacturing a paper inner cone cylinder by a wet forming process; 2) winding fine wire diameter winding on the paper inner cone to manufacture a coil winding middle layer; 3) shaping the outer surface of the paper inner cone; specifically, water is sprayed on the paper inner cone wound with the fine-wire-diameter winding wire for several minutes, so that the outer surface of the paper inner cone expands and deforms towards an inner triangular area between adjacent turns of the coil winding middle layer to form a wavy contact surface; 4) manufacturing a paper outer cone on the coil winding intermediate layer by a wet forming process; simultaneously, the inner surface of the plastic is shaped; 5) the conical base cylinder is removed.
Description
Technical Field
The invention relates to a secondary coil of a high-voltage pulse transformer, in particular to a method for manufacturing a conical glue-free secondary coil based on a wet forming process and the coil.
Background
The Russian Sinus series high-voltage pulse generator adopts a compact structure with a high-coupling transformer with an open-circuit magnetic core and a coaxial forming wire.
The primary coil and the secondary coil of the transformer are embedded in the coaxial pulse forming line; the secondary coil has the characteristics of thin wire diameter and multiple turns, and is arranged between an inner magnetic core and an outer magnetic core which form a wire.
The commonly used secondary coil takes an electrical paper board as a base cylinder, and a thin-wire-diameter conducting wire is wound and fixed on the paper base cylinder in a curing glue adhesion mode, wherein a curing glue layer of the adhesive coil has tiny air bubbles. In the process of charging the secondary coil, the inner magnetic core is at a high potential, and two ends of the secondary coil bear high voltage; at the moment, the electric field in the air gap in the glue layer is obviously enhanced, and the phenomenon of gas discharge is easy to occur, so that the coil is burnt, and the transformer cannot work normally.
In the prior art, high-voltage insulation performance of a medium is improved by loading high air pressure on a formed line medium; however, the high pressure cannot improve the normal pressure form of the microbubbles in the cured gel layer, and the bubbles in the gel layer are still easy to have high voltage breakdown.
The secondary coil of the non-glue type conical high-voltage pulse transformer (application number: ZL201510381708.0) disclosed by the Chinese patent provides a non-glue coil structure, which solves the problem of gas discharge caused by a gluing process in the existing conical secondary coil manufacturing, improves the turn-to-turn insulation performance of the coil and ensures the integral insulation strength of the conical secondary coil. However, the coil adopts the fishing line to fix the winding, so that the manufacturing process is complicated, and the manufacturing period is long for ensuring the uniformity of the winding; therefore, the practicability is not high, and the actual working requirement is difficult to meet.
Disclosure of Invention
The invention aims to overcome the defects that the prior non-glue secondary coil has complex manufacturing process and longer manufacturing period, causes low practicability and is difficult to meet the actual working requirement, and provides a method for manufacturing a conical non-glue secondary coil based on a wet forming process and the coil.
In order to achieve the purpose, the technical scheme provided by the invention is as follows: the method for manufacturing the cone-shaped non-glue secondary coil based on the wet forming process is characterized by comprising the following steps of:
1) making paper inner cone
Manufacturing a paper inner cone cylinder on the conical base cylinder through a wet forming process;
the wet forming process is a mature process applied to an insulating structural member of a power transformer, and the specific method is that a plurality of layers of wet paper are externally coated on a base cylinder, then tightening belts are bound, and the solid paper component with certain mechanical strength is finally formed after high-temperature drying for a certain time.
2) Manufacturing coil winding middle layer
Winding fine wire diameter winding on the paper inner cone to manufacture a coil winding middle layer;
3) paper inner cone outer surface shaping
Spraying water on the paper inner cone wound with the fine-wire-diameter winding wire for several minutes to enable the outer surface of the paper inner cone to expand and deform towards an inner triangular area between adjacent turns of the coil winding middle layer, and the outer surface of the paper inner cone forms a wavy contact surface in a high-temperature drying process of wet forming;
4) making paper external cone and shaping its internal surface
Manufacturing a paper outer cone cylinder on the coil winding intermediate layer by using the coil winding intermediate layer as a substrate through a wet forming process;
in the process of manufacturing the paper outer cone, the inner surface of the paper outer cone contracts and deforms towards the outer triangular area between adjacent turns of the coil winding middle layer, and a wavy contact surface is formed in the high-temperature drying process of wet forming of the paper outer cone;
5) the conical base cylinder is removed.
In addition, the invention also provides a conical glue-free secondary coil which is characterized by comprising a paper inner cone, a coil winding middle layer and a paper outer cone, wherein the paper inner cone, the coil winding middle layer and the paper outer cone are coaxial and tightly attached from inside to outside; the outer contact surface of the paper inner cone cylinder tightly attached to the coil winding middle layer and the inner contact surface of the paper outer cone cylinder tightly attached to the coil winding middle layer are wavy.
Furthermore, the coil winding middle layer is formed by winding fine wire diameter windings on the outer surface of the paper inner cone, the drying temperature of wet forming is about 90-110 ℃, and the fine wire diameter windings are enameled wires or three layers of insulating wires which can resist the high temperature of 110 ℃ and above.
Further, the outside diameter of the fine wire diameter winding is about 0.3 to 2 mm.
Compared with the prior art, the invention has the advantages that:
1. the cone-shaped secondary coil adopts the wet-formed paper tube to fix the coil winding instead of the traditional mode of fixing the winding by glue, realizes the glue-free mode, and solves the problems of long service life and high reliability of the cone-shaped high-voltage secondary coil in the pulse transformer.
2. The invention adopts the wavy contact surface, plays a role in fixing the coil middle layer along the conical surface direction and the radial direction, and can effectively realize the fixation of the coil middle layer.
3. The conical secondary coil has simple structure, uniform winding and good turn-to-turn insulation; and is easy to realize, and has a short manufacturing period.
Drawings
FIG. 1 is a schematic structural view of one embodiment of a tapered secondary coil of the present invention;
the reference numerals in the drawings are explained as follows:
1-paper outer cone;
2-coil winding middle layer;
3, paper inner cone cylinder;
4-conical base cylinder.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
The embodiment provides a conical non-glue secondary coil, which is of a thin-wall conical cylinder structure integrally and comprises a paper inner conical cylinder 3, a coil winding middle layer 2 and a paper outer conical cylinder 1, wherein the paper inner conical cylinder 3, the coil winding middle layer 2 and the paper outer conical cylinder are coaxial and tightly attached from inside to outside; the outer contact surface of the paper inner cone cylinder 3 tightly attached to the coil winding middle layer 2 and the inner contact surface of the paper outer cone cylinder 1 tightly attached to the coil winding middle layer 2 are wavy. The wavy contact surface plays a role in fixing the coil middle layer along the conical surface direction and the radial direction.
The coil winding middle layer 2 is formed by winding fine wire diameter windings with the outer diameter of 0.34mm on the outer surface of the paper inner cone 3, and the fine wire diameter windings are enameled wires or three layers of insulating wires which can resist the high temperature of 110 ℃ and above due to the fact that the drying temperature of wet forming is about 90-110 ℃.
The implementation also discloses a method for manufacturing the conical glue-free secondary coil, which comprises the following specific steps:
1) making a paper inner cone 3
Manufacturing a paper inner cone cylinder 3 on an aluminum conical base cylinder 4 by a wet forming process; the depth of the conical surface inner sunken groove on the surface of the paper inner cone 1 is 1.5mm, and the width and the depth of the spiral grooves at two ends are 0.5mm and 0.5 mm.
The wet forming process is a mature process applied to an insulating structural member of a power transformer, and the specific method is that a plurality of layers of wet paper are externally coated on a base cylinder, then tightening belts are bound, and the solid paper component with certain mechanical strength is finally formed after high-temperature drying for a certain time.
2) Manufacture of coil winding intermediate layer 2
Winding a thin-wire-diameter winding on a paper inner cone 3 to manufacture a coil winding intermediate layer 2; the fine wire diameter winding is an enameled wire with the outer diameter of 0.34 mm.
3) Paper inner cone 3 outer surface shaping
Spraying water on the paper inner cone 3 wound with the fine-wire-diameter winding wire for several minutes, keeping the winding wire unchanged, enabling the outer surface of the paper inner cone 3 to expand and deform towards an inner triangular area between adjacent turns of the coil winding middle layer 2, and enabling the outer surface of the paper inner cone 3 to form a wavy contact surface in a wet-forming high-temperature drying process;
4) making paper outer cone 1 and setting its inner surface
The coil winding middle layer 2 is used as a substrate, and a paper outer cone 1 is manufactured on the coil winding middle layer 2 through a wet forming process;
in the process of manufacturing the paper outer cone 1, the inner surface of the paper outer cone is contracted and deformed towards the outer triangular area between adjacent turns of the coil winding middle layer 2, and the inner surface of the paper outer cone 1 forms a wavy contact surface in the high-temperature drying process of wet forming;
5) a wire stripping groove is formed at the small end of the paper inner cone 3, and the wire end of the fine wire diameter winding is adjusted; removing the conical base cylinder 4; a wire stripping groove is formed in the inner side of the large end of the paper outer cone 1, and the wire end of the wire with the small wire diameter is adjusted; and an oil hole is formed.
The above embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed, and other modifications are possible within the scope of the invention. It is to be understood that any obvious alternative is within the scope of the invention without departing from the inventive concept.
Claims (4)
1. The method for manufacturing the cone-shaped non-glue secondary coil based on the wet forming process is characterized by comprising the following steps of:
1) making papery inner cone (3)
Manufacturing a paper inner cone cylinder (3) on the conical base cylinder (4) by a wet forming process;
2) making a coil winding middle layer (2)
Winding fine wire diameter winding on the paper inner cone (3) to manufacture a coil winding middle layer (2);
3) shaping the outer surface of the paper inner cone (3)
Spraying water on the paper inner cone (3) wound with the fine-wire-diameter winding wire for several minutes to enable the outer surface of the paper inner cone (3) to expand and deform towards an inner triangular area between adjacent turns of the coil winding middle layer (2);
the outer surface of the paper inner cone (3) forms a wavy contact surface in the high-temperature drying process of wet forming;
4) manufacturing a paper outer cone (1) and simultaneously shaping the inner surface of the paper outer cone
The coil winding intermediate layer (2) is taken as a substrate, and a paper outer conical cylinder (1) is manufactured on the coil winding intermediate layer (2) through a wet forming process;
in the process of manufacturing the paper outer cone (1), the inner surface of the paper outer cone contracts and deforms towards the outer triangular area between adjacent turns of the coil winding middle layer (2);
the inner surface of the paper outer cone cylinder (1) forms a wavy contact surface in the high-temperature drying process of wet forming;
5) the conical base cylinder (4) is removed.
2. A tapered coreless secondary coil manufactured by the method for manufacturing a tapered coreless secondary coil based on the wet forming process according to claim 1, wherein: comprises a paper inner cone (3), a coil winding middle layer (2) and a paper outer cone (1) which are coaxial and tightly attached from inside to outside;
the outer contact surface of the paper inner cone cylinder (3) tightly attached to the coil winding middle layer (2) and the inner contact surface of the paper outer cone cylinder (1) tightly attached to the coil winding middle layer (2) are wavy.
3. The tapered, glue-free secondary coil of claim 2, wherein: the coil winding middle layer (2) is made by winding fine wire diameter windings on the outer surface of the paper inner cone cylinder (3), and the fine wire diameter windings are enameled wires or three-layer insulating wires resistant to the high temperature of 110 ℃ and above.
4. The tapered, glue-free secondary coil of claim 3, wherein: the outer diameter of the thin wire diameter winding is 0.3-2 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910181108.8A CN109950040B (en) | 2019-03-11 | 2019-03-11 | Method for manufacturing cone-shaped glue-free secondary coil based on wet forming process and coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910181108.8A CN109950040B (en) | 2019-03-11 | 2019-03-11 | Method for manufacturing cone-shaped glue-free secondary coil based on wet forming process and coil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109950040A CN109950040A (en) | 2019-06-28 |
| CN109950040B true CN109950040B (en) | 2021-01-05 |
Family
ID=67008691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910181108.8A Active CN109950040B (en) | 2019-03-11 | 2019-03-11 | Method for manufacturing cone-shaped glue-free secondary coil based on wet forming process and coil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109950040B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110379617B (en) * | 2019-07-03 | 2021-01-05 | 西北核技术研究院 | Manufacturing method of self-adhesive conical high-voltage secondary coil and coil |
| CN111341555B (en) * | 2020-03-28 | 2021-09-24 | 潍坊汇胜绝缘技术有限公司 | Method for manufacturing conical coil of transformer |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208120449U (en) * | 2018-03-07 | 2018-11-20 | 广州市胜隆纺织实业有限公司 | A kind of dedicated novel spool of twisting machine |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8653925B2 (en) * | 2011-03-03 | 2014-02-18 | Lifewave, Inc. | Double helix conductor |
| US9076581B2 (en) * | 2012-04-30 | 2015-07-07 | Honeywell International Inc. | Method for manufacturing high temperature electromagnetic coil assemblies including brazed braided lead wires |
| CN202905424U (en) * | 2012-11-06 | 2013-04-24 | 常州市英中电气有限公司 | Insulating paper cylinder for ultrahigh-voltage or extreme-high-voltage transformers |
| CN104992820B (en) * | 2015-06-30 | 2017-02-01 | 西北核技术研究所 | Secondary coil of non-adhesive tapered high-voltage pulse transformer |
| CN206210512U (en) * | 2016-08-30 | 2017-05-31 | 贵州新安航空机械有限责任公司 | A kind of electromagnetic valve coil skeleton structure |
| CN206931478U (en) * | 2017-07-03 | 2018-01-26 | 泰州魏德曼高压绝缘有限公司 | Transformer wet method insulation molding part assembling die |
-
2019
- 2019-03-11 CN CN201910181108.8A patent/CN109950040B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208120449U (en) * | 2018-03-07 | 2018-11-20 | 广州市胜隆纺织实业有限公司 | A kind of dedicated novel spool of twisting machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109950040A (en) | 2019-06-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109950040B (en) | Method for manufacturing cone-shaped glue-free secondary coil based on wet forming process and coil | |
| CN109830371B (en) | Method for manufacturing conical glue-free secondary sparse winding coil based on wet forming process and coil | |
| CN104992820B (en) | Secondary coil of non-adhesive tapered high-voltage pulse transformer | |
| CN102176372A (en) | Cylindrical dry type high-voltage capacitor core | |
| CN109786081B (en) | Method for manufacturing cone-shaped glue-free secondary coil based on crepe paper and coil | |
| US7969268B2 (en) | Ignition coil with spaced secondary sector windings | |
| CN201069671Y (en) | Single-side self-adhesive aldehyde lacquer coated combined lead | |
| CN110379617B (en) | Manufacturing method of self-adhesive conical high-voltage secondary coil and coil | |
| CN109036805A (en) | A kind of Tesla pulse transformer of the secondary coil without support frame | |
| CN201369220Y (en) | Foil winding structure of low-voltage coil | |
| CN110706893B (en) | Energy-saving environment-friendly efficient segmented isolation type high-frequency transformer | |
| CN109524240B (en) | Pulse capacitor | |
| US9812248B2 (en) | Ignition coil | |
| CN201629202U (en) | Parallel composite transposition lead | |
| CN107026006A (en) | A kind of oil-immersed transformer high-voltage coils and its winding method | |
| CN207021133U (en) | The transformer of electric-arc lighter | |
| JP2000331850A (en) | High-voltage generating coil | |
| JP2022506213A (en) | Transformers and how to manufacture transformers | |
| CN208819718U (en) | A kind of Tesla pulse transformer of the secondary coil without support frame | |
| CN207038317U (en) | A kind of oil-immersed transformer high-voltage coils | |
| CN201051438Y (en) | A novel dry transformer | |
| CN110739146A (en) | Process for manufacturing opposite phase voltage transformer by adopting C-shaped iron core | |
| JP3888516B2 (en) | Ignition coil for internal combustion engine | |
| CN204792358U (en) | Take transformer of soft square ring | |
| CN109494028A (en) | Single guide-tube structure oilpaper casing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |