CN111341555B - Method for manufacturing conical coil of transformer - Google Patents
Method for manufacturing conical coil of transformer Download PDFInfo
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- CN111341555B CN111341555B CN202010232747.5A CN202010232747A CN111341555B CN 111341555 B CN111341555 B CN 111341555B CN 202010232747 A CN202010232747 A CN 202010232747A CN 111341555 B CN111341555 B CN 111341555B
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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
- H01F41/098—Mandrels; Formers
-
- 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
- H01F41/064—Winding non-flat conductive wires, e.g. rods, cables or cords
- H01F41/066—Winding non-flat conductive wires, e.g. rods, cables or cords 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
- H01F41/071—Winding coils of special form
-
- 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
- H01F41/094—Tensioning or braking devices
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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
-
- 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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Paper (AREA)
Abstract
The invention discloses a method for manufacturing a conical coil of a transformer, which comprises the steps of applying a wet paperboard on a conical insulating cylinder framework manufacturing mold, carrying out vacuum dehydration and flapping, binding the wet paperboard by using elastic cloth, removing the elastic cloth after standing for more than 4 hours, winding a nylon wire, drying, cooling, removing the nylon wire to obtain a spiral groove, and winding an enameled round copper wire along the spiral groove to obtain the formed conical coil of the transformer. The invention overcomes the defect of risk caused by using glue in the prior art, realizes that the transformer conical coil used without glue is manufactured by winding the small-diameter enameled wire, improves the insulating property of the product and ensures the product quality.
Description
Technical Field
The invention belongs to the technical field of insulating part manufacturing equipment, and particularly relates to a method for manufacturing a conical coil of a transformer.
Background
In the existing transformer equipment, the used coil is a conical coil, the inner layer of the product is an insulating cylinder framework, the framework material is an insulating paper board, and the insulating paper board is externally prepared and molded by winding and using glue to bond an enameled round copper wire. The diameter of the used conventional enameled wire is 0.51/0.7/1.0mm, the wire is wound from the small conical head part, and the insulating cylinder has a conical inclination due to the small diameter of the enameled wire, so that the situations of slipping, wire jumping and the like are easy to occur in the winding process of the enameled wire, and the coil is slow in progress or even cannot be formed, therefore, in the actual operation, a layer of glue is coated on the outer surface of the insulating cylinder, and then the enameled wire is wound, so that the enameled wire plays a fixing role through the adhesive force of the glue, and the situations of slipping, wire jumping and the like cannot occur; however, the use of glue also causes certain risks (risks such as reduction of insulation performance) to the coil itself, and therefore how to complete the winding of the enameled wire without using glue is a problem which is difficult to solve at present.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the manufacturing method of the transformer conical coil overcomes the defect of risks caused by using glue in the prior art, realizes the process of manufacturing the transformer conical coil by winding the glue-free small-diameter enameled wire, and has the advantages of high quality of the prepared product and good insulativity.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a method for manufacturing a conical coil of a transformer comprises the following steps:
a. preparing an insulating cylinder framework: according to the wet forming process, wet paperboards with 70% of water are applied to a conical insulating cylinder framework manufacturing mold, and the reverse slope treatment is carried out on the paper board lapping interface of the insulating cylinder framework so as to ensure the uniformity of the thickness of the lapping interface; then the mould is connected with a vacuum pump to carry out vacuum dehydration on the wet paper board, water is continuously added to the surface of the paper board while the vacuum dehydration is carried out, and the outer surface of the wet paper board is flapped by a beating tool, so that staggered fibers are formed between the paper board layers (the water content of the wet paper board is reduced and the fiber bonding strength of the wet paper board is improved); then, binding the product by using elastic cloth (so as to improve the tightness of the product); standing for more than 4 hours, removing the elastic cloth, and preparing to wind the nylon thread;
b. and (3) winding the nylon wire to manufacture a spiral groove: after the insulating cylinder framework manufactured in the step a is formed and before the insulating cylinder framework is dried in an oven, firstly, a high-temperature-resistant nylon wire which is 35-50% larger than the diameter of an enameled round copper wire (for example, the diameter of the enameled round copper wire to be wound is 0.51mm, the diameter of the enameled round copper wire is 0.7mm, the diameter of the enameled wire to be wound is 1.0mm, the diameter of the enameled wire to be wound is 1.5 mm), and the high-temperature-resistant nylon wire is wound on the outer layer of the insulating cylinder framework and is wound along a path through which the enameled wire to be wound is wound; after the nylon wire is completely wound, binding elastic cloth outside the nylon wire (so as to improve the tightness of the inner layer insulation cylinder product and ensure the strength of the product), and then drying the whole nylon wire in an oven at 105 ℃; after drying, taking out and cooling to room temperature, and then sequentially removing the elastic cloth and the nylon threads;
c. b, winding the required enameled round copper wire along the spiral groove manufactured in the step b, and winding the enameled round copper wire by using insulating micro-corrugated paper (the insulating micro-corrugated paper plays a role in protection) after the winding is finished; and then the product is subjected to fine modification, inspection, packaging and warehousing.
Preferably, the elastic cloth in the step a is high-strength elastic cloth.
Preferably, the beating in the step a is carried out by beating the outer surface of the wet paper board by a beating tool by staff.
Preferably, the mold in the step a is a hollow frustum-shaped mold, the bottom of the mold is provided with a hole with the diameter of 50 mm, the hole is connected with a vacuum pump pipeline, and the vacuum pump pipeline is connected with a vacuum pump; the mould surface evenly is provided with a plurality of hole of permeating water, and the hole diameter of permeating water is 3 millimeters.
Furthermore, the vacuum pump is a water ring vacuum pump which can manufacture a vacuum environment in the mold and pump out water which is absorbed into the inner cavity of the mold by moisture in the wet paper board of the wet insulating cylinder framework.
Preferably, the winding force is controlled by an expander when the nylon thread is wound in the step b. Because the outer surface of the insulating cylinder framework has certain flexibility and plasticity, the force expander can adjust the force applied to the nylon wire, and the nylon wire is embedded into the outer surface of the insulating cylinder under the action of the pulling force, so that the depth of the groove pressed by the nylon wire on the outer surface of the insulating cylinder framework can be controlled.
Preferably, the nylon wire in the step b is removed by using a semi-automatic winding machine.
Preferably, the nylon wire used in step b has a diameter of 0.7mm, 1.0mm or 1.5mm, and the diameter of the corresponding subsequently wound round enameled copper wire is 0.51mm, 0.7mm or 1.0 mm.
Preferably, the winding in the step b and the step c adopts a semi-automatic winding machine.
Preferably, the winding force is controlled by a tension device when the enameled round copper wire is wound in the step c.
Due to the adoption of the technical scheme, the invention has the beneficial effects that:
(1) the inner layer insulating cylinder is integrally manufactured and integrally formed, so that the strength of the insulating cylinder is ensured;
(2) the nylon wire is used for manufacturing the thread groove on the outer surface of the insulating cylinder, so that the enameled round copper wire can be fixed, and the phenomena of wire jumping and slipping are avoided;
(3) and glue is not used, so that potential safety hazards caused by the use of glue are avoided.
In a word, the method overcomes the defect of risks caused by using glue in the prior art, realizes that the transformer conical coil used without glue is manufactured by winding the small-diameter enameled wire, improves the insulating property of the product, and ensures the product quality.
Drawings
FIG. 1 is a schematic structural diagram of an apparatus for manufacturing a framework of an insulating cylinder according to the present invention;
in the figure, 1, an insulating cylinder framework; 2. a mold; 3. water permeable holes; 4. a water ring vacuum pump.
Detailed Description
The invention is further illustrated below with reference to the figures and examples.
The first embodiment is as follows:
as shown in fig. 1, the method for manufacturing a tapered coil of a transformer includes the following steps:
a. preparing an insulating cylinder framework: according to the wet forming process, wet paperboards with 70% of water are applied to a conical insulating cylinder framework manufacturing mold, and the reverse slope treatment is carried out on the paper board lapping interface of the insulating cylinder framework so as to ensure the uniformity of the thickness of the lapping interface; then the mould is connected with a vacuum pump to carry out vacuum dehydration on the wet paper board, water is continuously added to the surface of the paper board while the vacuum dehydration is carried out, and a special beating tool is used for beating the outer surface of the wet paper board, so that staggered fibers are formed between the paper board layers; then binding the product by using high-strength elastic cloth; standing for more than 4 hours, removing the elastic cloth, and preparing to wind the nylon thread.
The mould 2 is a hollow frustum-shaped mould 2, the bottom of the mould 2 is provided with a hole (not marked) with the diameter of 50 mm, and the hole is connected with a vacuum pump pipeline (not marked) which is connected with a water ring vacuum pump 4; a plurality of water permeable holes 3 are uniformly arranged on the surface of the mould 2, and the diameter of each water permeable hole 3 is 3 mm; the vacuum environment in the mould 2 can be manufactured through the water ring vacuum pump 4, and water in the wet paper board of the wet insulating cylinder framework 1 is sucked into the inner cavity of the mould 2 and is pumped out.
b. And (3) winding the nylon wire to manufacture a spiral groove: after the insulating cylinder framework manufactured in the step a is molded and before the insulating cylinder framework is dried in an oven, firstly, a high-temperature-resistant nylon wire (for example, the high-temperature-resistant nylon wire with the diameter of 0.7mm is adopted when the enameled round copper wire with the diameter of 0.51mm is to be wound) which is larger than that of the enameled round copper wire is wound on the outer layer of the insulating cylinder framework by using a semi-automatic winding machine, and the insulating cylinder framework is wound along a path through which an enameled wire to be wound passes when the enameled wire is wound; after the nylon wire is completely wound, binding elastic cloth outside the nylon wire, and then drying the whole nylon wire in an oven at 105 ℃; after drying, taking out and cooling to room temperature, and then sequentially removing the elastic cloth and the nylon threads; wherein the nylon wire is removed by using a semi-automatic winding machine.
c. B, winding the required enameled round copper wire along the spiral groove manufactured in the step b, and winding the enameled round copper wire by using insulating micro-corrugated paper after winding by using a semi-automatic winding machine, wherein the insulating micro-corrugated paper plays a role in protection; and then the product is subjected to fine modification, inspection, packaging and warehousing.
It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
Claims (9)
1. The method for manufacturing the conical coil of the transformer is characterized by comprising the following steps of:
a. preparing an insulating cylinder framework: according to the wet forming process, wet paperboards with 70% of water are applied to a conical insulating cylinder framework manufacturing mold, and the reverse slope treatment is carried out on the paper board lapping interface of the insulating cylinder framework so as to ensure the uniformity of the thickness of the lapping interface; then the mould is connected with a vacuum pump to carry out vacuum dehydration on the wet paper board, and the outer surface of the wet paper board is flapped while the vacuum dehydration is carried out; then binding the product by using elastic cloth;
b. and (3) winding the nylon wire to manufacture a spiral groove: after the insulating cylinder framework manufactured in the step a is molded and before the insulating cylinder framework is dried in an oven, firstly winding a high-temperature-resistant nylon wire which is 35-50% larger than the diameter of the enameled round copper wire on the outer layer of the insulating cylinder framework, and winding along a path through which the enameled wire to be wound passes when the enameled wire is wound; after the nylon wire is completely wound, binding elastic cloth outside the nylon wire, and then drying the whole nylon wire in an oven at 105 ℃; after drying, taking out and cooling to room temperature, and then sequentially removing the elastic cloth and the nylon threads;
c. b, winding the required enameled round copper wire along the spiral groove manufactured in the step b, and winding the enameled round copper wire outside by using insulating micro-crepe paper after the winding is finished; and then the product is subjected to fine modification, inspection, packaging and warehousing.
2. The method for manufacturing a tapered coil of a transformer according to claim 1, wherein: the elastic cloth in the step a is high-strength elastic cloth.
3. The method for manufacturing a tapered coil of a transformer according to claim 1, wherein: and the beating in the step a is that the staff adopts a beating tool to beat the outer surface of the wet paper board.
4. The method for manufacturing a tapered coil of a transformer according to claim 1, wherein: the vacuum pump in the step a is a water ring vacuum pump.
5. The method for manufacturing a tapered coil of a transformer according to claim 1, wherein: the mould in the step a is a hollow frustum-shaped mould, the bottom of the mould is provided with a hole connected with a vacuum pump pipeline, and the vacuum pump pipeline is connected with a vacuum pump; the mould surface evenly is provided with a plurality of hole of permeating water.
6. The method for manufacturing a tapered coil of a transformer according to claim 1, wherein: b, adopting an expander to control the winding force when the nylon wire is wound in the step b; and c, adopting a tension device to control the winding force when the enameled round copper wire is wound in the step c.
7. The method for manufacturing a tapered coil of a transformer according to claim 1, wherein: and b, removing the nylon wire in the step b by using a semi-automatic winding machine.
8. The method for manufacturing a tapered coil of a transformer according to claim 1, wherein: the diameter of the nylon wire used in the step b is 0.7mm, 1.0mm or 1.5mm, and the diameter of the corresponding subsequently wound enameled round copper wire is 0.51mm, 0.7mm or 1.0 mm.
9. The method for manufacturing a tapered coil of a transformer according to claim 1, wherein: and c, winding in the step b and the step c by using a semi-automatic winding machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010232747.5A CN111341555B (en) | 2020-03-28 | 2020-03-28 | Method for manufacturing conical coil of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010232747.5A CN111341555B (en) | 2020-03-28 | 2020-03-28 | Method for manufacturing conical coil of transformer |
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| Publication Number | Publication Date |
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| CN111341555A CN111341555A (en) | 2020-06-26 |
| CN111341555B true CN111341555B (en) | 2021-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010232747.5A Active CN111341555B (en) | 2020-03-28 | 2020-03-28 | Method for manufacturing conical coil of transformer |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102930978A (en) * | 2012-11-15 | 2013-02-13 | 常州市英中电气有限公司 | Wet forming process of super-high voltage transformer insulator |
| CN107993780A (en) * | 2017-11-23 | 2018-05-04 | 辽宁兴启电工材料有限责任公司 | Cover voltage equalizing ball, the technique of balance pipe integral structure ultrathick insulating layer |
| EP3381042A1 (en) * | 2015-11-25 | 2018-10-03 | BAE Systems PLC | Rf transmitter and method of manufacture thereof |
| CN109830371A (en) * | 2019-03-11 | 2019-05-31 | 西北核技术研究所 | Method and the coil of the cone cell without glue secondary space(d) winding are manufactured based on wet therapy forming process |
| CN109950040A (en) * | 2019-03-11 | 2019-06-28 | 西北核技术研究所 | Method and the coil of the cone cell without glue secondary coil are manufactured based on wet therapy forming process |
| CN110379617A (en) * | 2019-07-03 | 2019-10-25 | 西北核技术研究院 | A kind of production method and the coil of self-adhesion cone cell high voltage second coil |
-
2020
- 2020-03-28 CN CN202010232747.5A patent/CN111341555B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102930978A (en) * | 2012-11-15 | 2013-02-13 | 常州市英中电气有限公司 | Wet forming process of super-high voltage transformer insulator |
| EP3381042A1 (en) * | 2015-11-25 | 2018-10-03 | BAE Systems PLC | Rf transmitter and method of manufacture thereof |
| CN107993780A (en) * | 2017-11-23 | 2018-05-04 | 辽宁兴启电工材料有限责任公司 | Cover voltage equalizing ball, the technique of balance pipe integral structure ultrathick insulating layer |
| CN109830371A (en) * | 2019-03-11 | 2019-05-31 | 西北核技术研究所 | Method and the coil of the cone cell without glue secondary space(d) winding are manufactured based on wet therapy forming process |
| CN109950040A (en) * | 2019-03-11 | 2019-06-28 | 西北核技术研究所 | Method and the coil of the cone cell without glue secondary coil are manufactured based on wet therapy forming process |
| CN110379617A (en) * | 2019-07-03 | 2019-10-25 | 西北核技术研究院 | A kind of production method and the coil of self-adhesion cone cell high voltage second coil |
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|---|---|
| CN111341555A (en) | 2020-06-26 |
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