CN111010007A - Binding method for less-glue stator coil - Google Patents
Binding method for less-glue stator coil Download PDFInfo
- Publication number
- CN111010007A CN111010007A CN201911366669.1A CN201911366669A CN111010007A CN 111010007 A CN111010007 A CN 111010007A CN 201911366669 A CN201911366669 A CN 201911366669A CN 111010007 A CN111010007 A CN 111010007A
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- CN
- China
- Prior art keywords
- heat
- coil
- shrinkable
- coating
- resistance
- 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.)
- Pending
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/10—Applying solid insulation to windings, stators or rotors
- H02K15/105—Applying solid insulation to windings, stators or rotors to the windings
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention discloses a binding method of a less-glue stator coil, which comprises the following steps: step 1, wrapping an insulating layer on the surface of a coil; step 2, coating a layer of heat-shrinkable polyester film belt on the outer side of the coil from 40mm of the coil linear segment; step 3, heating the heat-shrinkable mylar tape by a thermal spray gun so that the heat-shrinkable mylar tape is attached to the insulating layer; step 4, coating a low stop band outside the polyester film band; step 5, respectively coating high-resistance bands on the outer side of the low-resistance band, the coil linear section and the bending parts on the two sides of the coil linear section; step 6, coating a layer of heat-shrinkable polyester film belt outside the whole high-resistance belt range; and 7, carrying out a VPI process to enable the heat-shrinkable mylar tape to be attached to the high-resistance tape. The invention can obviously improve the insulating property of the stator coil coating.
Description
Technical Field
The invention relates to a binding method for a less-glue stator coil, which is used in the field of high-voltage motor manufacturing.
Background
The insulation of the high-voltage motor coil adopts a mica tape wrapping process, after an insulating layer is wrapped, a low stop band is wrapped at a straight line section part, then a high stop band is wrapped at a direct section part and bending parts (R parts) at two sides, and finally a polyester-glass interwoven band is wrapped at the whole end part, so that the whole wrapping process is completed. According to the process, the mica tape is easy to open when the end part is wrapped, and the high-resistance band also can open to generate air gaps, so that the electrical performance and the anti-corona performance of the insulating layer can be seriously influenced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a less-glue stator coil wrapping method which can obviously improve the insulation performance of the stator coil wrapping.
One technical scheme for achieving the above purpose is as follows: a less-glue stator coil wrapping method is characterized by comprising the following steps:
step 1, wrapping an insulating layer on the surface of a coil;
step 2, coating a layer of heat-shrinkable polyester film belt on the outer side of the coil from 40mm of the coil linear segment;
step 3, heating the heat-shrinkable mylar tape by a thermal spray gun so that the heat-shrinkable mylar tape is attached to the insulating layer;
step 4, coating a low stop band outside the polyester film band;
step 5, respectively coating high-resistance bands on the outer side of the low-resistance band, the coil linear section and the bending parts on the two sides of the coil linear section;
step 6, coating a layer of heat-shrinkable polyester film belt outside the whole high-resistance belt range;
and 7, carrying out a VPI process to enable the heat-shrinkable mylar tape to be attached to the high-resistance tape.
The heat-shrinkable mylar tape wrapping performed in step 2 was performed using a half lap wrap.
Further, the heat-shrinkable mylar tape wrapping performed in step 2 is performed using a half-lap wrapping.
The method for wrapping the less-glue stator coil has the following advantages.
1. The adopted material is a heat-shrinkable polyester film belt, so that the end part is insulated more tightly by heating shrinkage, an air gap is eliminated, and the loss of VPI paint is reduced;
2. the insulation coating of 40mm from the coil advancing line section strengthens the insulation strength of the coil notch;
3. the thermal shrinkage polyester film belts are adopted for two times in the straight line section of the coil and the bending parts on two sides of the straight line section, so that the insulating coating layers of all layers are tightened, the inner insulating layer is tightened for two times, and the corona prevention performance is improved.
4. After the coil is subjected to VPI dip coating, the surface is smooth and flat, corona such as point discharge is eliminated, and the appearance is good.
5. The polyester glass belt is changed into the heat-shrinkable polyester film belt, so that the unit price is reduced, and the cost is saved.
Detailed Description
In order to better understand the technical solution of the present invention, the following detailed description is made by specific examples:
the invention relates to a binding method of a less-glue stator coil, which comprises the following steps:
step 1, wrapping an insulating layer on the surface of a coil;
step 2, coating a layer of heat-shrinkable polyester film belt on the outer side of the coil by adopting a half-lap bag from 40mm of the coil advancing line section;
step 3, heating the heat-shrinkable mylar tape by a thermal spray gun so that the heat-shrinkable mylar tape is attached to the insulating layer;
step 4, coating a low stop band outside the polyester film band;
step 5, respectively coating high-resistance bands on the outer side of the low-resistance band, the coil linear section and the bending parts on the two sides of the coil linear section;
step 6, coating a layer of heat-shrinkable polyester film belt outside the whole high-resistance belt range;
and 7, carrying out a VPI process to enable the heat-shrinkable mylar tape to be attached to the high-resistance tape.
After the coil is insulated and wrapped, a layer of heat-shrinkable polyester film band is wrapped in a half-lap mode from 40mm of a straight line segment of an iron core, a high stop band is wrapped in a range including bending parts (R parts) on two sides of the straight line segment, and finally the whole high stop band is covered with a layer of heat-shrinkable polyester film band. After VPI, the polyester film shrinks to tighten insulation, and simultaneously, a high resistance band is tightened, so that an air gap is eliminated, and the insulation electrical property and the anti-corona property are improved.
It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that the changes and modifications of the above embodiments are within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.
Claims (2)
1. A less-glue stator coil wrapping method is characterized by comprising the following steps:
step 1, wrapping an insulating layer on the surface of a coil;
step 2, coating a layer of heat-shrinkable polyester film belt on the outer side of the coil from 40mm of the coil linear segment;
step 3, heating the heat-shrinkable mylar tape by a thermal spray gun so that the heat-shrinkable mylar tape is attached to the insulating layer;
step 4, coating a low stop band outside the polyester film band;
step 5, respectively coating high-resistance bands on the outer side of the low-resistance band, the coil linear section and the bending parts on the two sides of the coil linear section;
step 6, coating a layer of heat-shrinkable polyester film belt outside the whole high-resistance belt range;
and 7, carrying out a VPI process to enable the heat-shrinkable mylar tape to be attached to the high-resistance tape.
2. The method for wrapping a stator coil with less adhesive of claim 1, wherein the heat-shrinkable mylar tape wrapping performed in step 2 is performed by half-lap wrapping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911366669.1A CN111010007A (en) | 2019-12-26 | 2019-12-26 | Binding method for less-glue stator coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911366669.1A CN111010007A (en) | 2019-12-26 | 2019-12-26 | Binding method for less-glue stator coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111010007A true CN111010007A (en) | 2020-04-14 |
Family
ID=70118027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911366669.1A Pending CN111010007A (en) | 2019-12-26 | 2019-12-26 | Binding method for less-glue stator coil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111010007A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101860096A (en) * | 2010-05-17 | 2010-10-13 | 无锡市中达电机有限公司 | Stator core with winding for medium-sized low-voltage variable-frequency motor |
| CN202737690U (en) * | 2012-06-12 | 2013-02-13 | 江苏清江电机制造有限公司 | Novel vacuum pressure impregnation few glue structure |
| CN102983655A (en) * | 2012-12-29 | 2013-03-20 | 湘潭电机股份有限公司 | Insulation structure for motor stator coils |
| CN204290545U (en) * | 2014-12-06 | 2015-04-22 | 南阳防爆集团股份有限公司 | A kind of novel high pressure INCREASEDSAFETY stator winding corona preventing construction |
-
2019
- 2019-12-26 CN CN201911366669.1A patent/CN111010007A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101860096A (en) * | 2010-05-17 | 2010-10-13 | 无锡市中达电机有限公司 | Stator core with winding for medium-sized low-voltage variable-frequency motor |
| CN202737690U (en) * | 2012-06-12 | 2013-02-13 | 江苏清江电机制造有限公司 | Novel vacuum pressure impregnation few glue structure |
| CN102983655A (en) * | 2012-12-29 | 2013-03-20 | 湘潭电机股份有限公司 | Insulation structure for motor stator coils |
| CN204290545U (en) * | 2014-12-06 | 2015-04-22 | 南阳防爆集团股份有限公司 | A kind of novel high pressure INCREASEDSAFETY stator winding corona preventing construction |
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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 | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200414 |