CN201238225Y - Insulation structure of 10kV high-voltage variable-frequency motor - Google Patents
Insulation structure of 10kV high-voltage variable-frequency motor Download PDFInfo
- Publication number
- CN201238225Y CN201238225Y CNU2008201203836U CN200820120383U CN201238225Y CN 201238225 Y CN201238225 Y CN 201238225Y CN U2008201203836 U CNU2008201203836 U CN U2008201203836U CN 200820120383 U CN200820120383 U CN 200820120383U CN 201238225 Y CN201238225 Y CN 201238225Y
- Authority
- CN
- China
- Prior art keywords
- corona
- mica tape
- resistant film
- solenoid
- stopband
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
The utility model claims an insulation structure for the 10kV high voltage variable-frequency motor, which belongs to the technical field of electrical machinery. The insulation structure comprises a solenoid, a corona resistant film, and further includes a corona resistant film; the corona resistant film and mica tape alternately wind the solenoid; the utility model adopts a multilayer cross structure with corona resistant film and mica tape which are bonded together by insulation resin under high vacuum pressure. The multilayer cross structure and high vacuum pressure can effectively prevent the corona inside the material caused by the partial discharge and the multilayer cross structure of high vacuum pressure corona resistant film and mica tape increases the corona inception voltage by 4-5 times, thereby greatly prolonging the service life of high voltage variable-frequency motor. Meanwhile, since the thickness of the corona resistant film is only 1/5 of the mica tape thickness, the main insulation thickness can be reduced by about 18%, and the manufacture cost can be reduced by 10-15%.
Description
Technical field
The utility model relates to a kind of insulation system, especially relates to the insulation system that uses on a kind of 10kV high-pressure frequency-conversion motor.
Background technology
In the prior art, 10kV high-pressure frequency-conversion motor does not also have very ripe insulation system, the pure mica tape structure of the many employings of common 10kV high-voltage motor, particularly adopt low resin mica tape, be wrapped on the described solenoid and cohere and be one by insulated impregnating resin, be wound with high stopband again on the low resin mica tape near the both ends of electromagnetic wire rod, be wound with low stopband again on the low resin mica tape at the middle part of electromagnetic wire rod, the overlapping edges of described high stopband is in the edge of low stopband.The anti-corona problem that deal with surface discharge of this structure under the power frequency condition, but owing between copper cash and insulating barrier, have moisture content and air, can cause the inner partial discharge of electromagnetic wire, the partial discharge of material internal is even more serious under high frequency condition especially, cause the discharge inception voltage under the high frequency condition on the low side, the insulation system premature aging, and the corona that partial discharge causes also can cause electromagnetic pollution to surrounding environment.
The utility model content
For solving the above-mentioned defective of prior art, the purpose of this utility model is to provide a kind of insulation system of 10kV high-pressure frequency-conversion motor, can effectively solve the partial discharge problem of material internal, thereby improve the discharge inception voltage of insulation system under high frequency condition, and then improve the use mission of insulation system.
The technical scheme that the utility model is taked for achieving the above object is, a kind of insulation system of 10kV high-pressure frequency-conversion motor, comprise solenoid, on solenoid, be surrounded with the several layers mica tape, it is characterized in that, also include corona-resistant film, it is wrapped across on described solenoid that corona-resistant film and mica tape are.
More preferably a kind of embodiment of the present utility model is, on described solenoid, be surrounded with the corona-resistant film of ground floor successively, the mica tape of the second layer, the 3rd layer corona-resistant film, at least be no less than 10 layers mica tape since the 4th layer of stacked package, the wrapped again pyrocondensation braid over braid of skin also is wound with high stopband at the two ends of solenoid, middle part at solenoid also is wound with low stopband, and the edge of described high stopband overlaps mutually with the edge of low stopband.
Above-mentioned mica tape preferably adopts low resin mica tape.
Four jiaos of above-mentioned solenoid are all adopted reinforced insulation.So just prevented to cause easily breakdown phenomenon to take place because of four jiaos of electric fields are concentrated.
Above-mentioned solenoid preferably adopts the corona-resistant film sintering electromagnetic wire, and it is that bulging forms on the automatic expanding machine of stator frame coil of ZL00113680.1 that solenoid can adopt the patent No..
Further be set to: the pyrocondensation braid over braid at described solenoid two ends is exposed, and the pressure impregnation by insulating resin and condition of high vacuum degree coheres electromagnetic wire, corona-resistant film, low resin mica tape and height stopband and is one then.Such advantage is that all levels is all linked into an integrated entity, and electric field is evenly distributed at leisure, thereby prevents to cause breakdown because of the electric field sudden change.
The beneficial effects of the utility model are:
1, the utility model adopts the multilayer chi structure of corona-resistant film and low resin mica tape, and cohere at high vacuum pressure dipping by insulating resin and to be one, this multilayer chi structure and condition of high vacuum degree can effectively prevent the corona that material internal causes because of partial discharge, the multilayer chi structure of the corona-resistant film of condition of high vacuum degree and low resin mica tape makes discharge inception voltage improve 4～5 times, prolongs the useful life of high-pressure frequency-conversion motor greatly.2, because the thickness of corona-resistant film has only 1/5 of low resin mica tape, like this, can attenuate main insulation thickness about 18%, turn-to-turn insulation thickness about 70%, the direct manufacturing cost of high-pressure frequency-conversion motor can descend 10%～15%, the high-pressure frequency-conversion electric motor system is energy-conservation 20～25%, and the efficient of high-pressure frequency-conversion motor in full operating range improves 25～30%
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is A-A profile of Fig. 1;
Fig. 3 is B-B profile of Fig. 1.
Number in the figure: 1-corona-resistant film, 2-mica tape, 3-corona-resistant film, 4-solenoid, 5-pyrocondensation braid over braid, 6-high stopband, 7-low stopband, 8-reinforced insulation
Embodiment
As Fig. 1, Fig. 2, shown in Figure 3, the utility model comprises solenoid 4, on solenoid 4, be surrounded with the corona-resistant film 1 of ground floor successively, the low resin mica tape 2 of the second layer, the 3rd layer corona-resistant film 3, adopt low resin mica tape ten stacked bags later on from the 4th layer, skin is coated with pyrocondensation braid over braid 5 again, also be wound with high stopband 6 at two ends near solenoid 4, also be wound with low stopband 7 at the middle part of solenoid 4, the edge of high stopband 6 overlaps mutually with the edge of low stopband 7, four jiaos at solenoid 4 are all adopted reinforced insulation 8, for electric field is evenly distributed at leisure, can the pyrocondensation braid over braid 5 of solenoid 4 noses is exposed, the pressure impregnation by insulating resin and condition of high vacuum degree is with solenoid 4, corona-resistant film 1, low resin mica tape 2 and high stopband 6, low stopband 7 coheres and is one.
In the above-described embodiment, adopted the chi structure of two-layer corona-resistant film and mica tape, certainly, under the prerequisite of the stability that satisfies motor properties and insulation system, use the chi structure of more multi-layered corona-resistant film and mica tape, obviously also can reach the purpose of this utility model, just not give unnecessary details one by one at this.
Claims (5)
1, a kind of insulation system of 10kV high-pressure frequency-conversion motor comprises solenoid, is surrounded with the several layers mica tape on solenoid, it is characterized in that, also includes corona-resistant film, and it is wrapped across on described solenoid that corona-resistant film and mica tape are.
2, the insulation system of a kind of 10kV high-pressure frequency-conversion motor according to claim 1, it is characterized in that, on described solenoid, be surrounded with the corona-resistant film of ground floor successively, the mica tape of the second layer, the 3rd layer corona-resistant film, at least be no less than 10 layers mica tape since the 4th layer of stacked package, the wrapped again pyrocondensation braid over braid of skin, two ends at solenoid also are wound with high stopband, middle part at solenoid also is wound with low stopband, and the edge of described high stopband overlaps mutually with the edge of low stopband.
3, the insulation system of a kind of 10kV high-pressure frequency-conversion motor according to claim 1 and 2 is characterized in that, described mica tape adopts low resin mica tape.
4, the insulation system of a kind of 10kV high-pressure frequency-conversion motor according to claim 1 and 2 is characterized in that, four jiaos of described solenoid are all adopted reinforced insulation.
5, the insulation system of a kind of 10kV high-pressure frequency-conversion motor according to claim 1 and 2, it is characterized in that, the pyrocondensation braid over braid at described solenoid two ends is exposed, and the pressure impregnation by insulating resin and condition of high vacuum degree coheres electromagnetic wire, corona-resistant film, low resin mica tape and height stopband and is one then.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201203836U CN201238225Y (en) | 2008-06-27 | 2008-06-27 | Insulation structure of 10kV high-voltage variable-frequency motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201203836U CN201238225Y (en) | 2008-06-27 | 2008-06-27 | Insulation structure of 10kV high-voltage variable-frequency motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201238225Y true CN201238225Y (en) | 2009-05-13 |
Family
ID=40650958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201203836U Expired - Fee Related CN201238225Y (en) | 2008-06-27 | 2008-06-27 | Insulation structure of 10kV high-voltage variable-frequency motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201238225Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101847484A (en) * | 2010-03-18 | 2010-09-29 | 金群力 | Production technology of exciter coil |
| CN101951087A (en) * | 2010-09-15 | 2011-01-19 | 杨存高 | Method for manufacturing ground insulation layer of high-voltage motor stator coil, high-voltage motor stator coil and high-voltage motor |
| CN102255448A (en) * | 2011-07-19 | 2011-11-23 | 柳州市明阳机电制造有限责任公司 | Insulation manufacturing method for wind driven generator |
| CN104917321A (en) * | 2015-06-03 | 2015-09-16 | 卧龙电气集团股份有限公司 | 10KV high-voltage motor shaped coil and processing method thereof |
| CN104917320A (en) * | 2015-06-03 | 2015-09-16 | 卧龙电气集团股份有限公司 | 6KV high-voltage motor shaped coil and processing method thereof. |
| CN107342645A (en) * | 2016-05-03 | 2017-11-10 | 罗伯特·博世有限公司 | For motor rotor or stator electric winding conductor element |
| CN113726112A (en) * | 2021-10-14 | 2021-11-30 | 哈尔滨电机厂有限责任公司 | Manufacturing method of stator bar with staggered corona-proof structure |
| CN116683682A (en) * | 2023-07-27 | 2023-09-01 | 北京金风科创风电设备有限公司 | Stator, generator, wind generating set and encapsulation method |
-
2008
- 2008-06-27 CN CNU2008201203836U patent/CN201238225Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101847484A (en) * | 2010-03-18 | 2010-09-29 | 金群力 | Production technology of exciter coil |
| CN101951087A (en) * | 2010-09-15 | 2011-01-19 | 杨存高 | Method for manufacturing ground insulation layer of high-voltage motor stator coil, high-voltage motor stator coil and high-voltage motor |
| CN102255448A (en) * | 2011-07-19 | 2011-11-23 | 柳州市明阳机电制造有限责任公司 | Insulation manufacturing method for wind driven generator |
| CN104917321A (en) * | 2015-06-03 | 2015-09-16 | 卧龙电气集团股份有限公司 | 10KV high-voltage motor shaped coil and processing method thereof |
| CN104917320A (en) * | 2015-06-03 | 2015-09-16 | 卧龙电气集团股份有限公司 | 6KV high-voltage motor shaped coil and processing method thereof. |
| CN104917321B (en) * | 2015-06-03 | 2017-10-17 | 卧龙电气集团股份有限公司 | A kind of 10KV high-voltage motors formed coil and its processing method |
| CN104917320B (en) * | 2015-06-03 | 2018-01-19 | 卧龙电气集团股份有限公司 | A kind of 6KV high-voltage motors formed coil and its processing method |
| CN107342645A (en) * | 2016-05-03 | 2017-11-10 | 罗伯特·博世有限公司 | For motor rotor or stator electric winding conductor element |
| CN113726112A (en) * | 2021-10-14 | 2021-11-30 | 哈尔滨电机厂有限责任公司 | Manufacturing method of stator bar with staggered corona-proof structure |
| CN113726112B (en) * | 2021-10-14 | 2022-06-21 | 哈尔滨电机厂有限责任公司 | Manufacturing method of stator bar with staggered corona-proof structure |
| CN116683682A (en) * | 2023-07-27 | 2023-09-01 | 北京金风科创风电设备有限公司 | Stator, generator, wind generating set and encapsulation method |
| CN116683682B (en) * | 2023-07-27 | 2024-02-23 | 北京金风科创风电设备有限公司 | Stator, generator, wind generating set and encapsulation method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201238225Y (en) | Insulation structure of 10kV high-voltage variable-frequency motor | |
| US20240258862A1 (en) | Electrical machine coil insulation system and method | |
| CN101512691B (en) | Disc wound transformer and manufacturing method thereof | |
| CN103493157A (en) | Cable and electromagnetic device comprising the same | |
| CN103997148A (en) | Motor stator coil turn-to-turn insulation structure | |
| CN102983654A (en) | 6 kilovolt level high-voltage motor insulation structure and manufacturing method thereof | |
| RU2291542C2 (en) | Stepped electric filed insulation system for dynamoelectric machine | |
| CN102983656A (en) | 10 kilovolt level high-voltage motor insulation structure and manufacturing method thereof | |
| CN201717698U (en) | Reduction insulation structure suitable for high-voltage motor | |
| CN201230238Y (en) | Stator winding wire for one-time molding three layers of thin film package wind power generator | |
| JP2014203923A (en) | Resin mold coil and mold transformer | |
| AU2018222793B2 (en) | Medium-frequency transformer with dry core | |
| CN112564364B (en) | Insulation structure of high-voltage motor | |
| CN109830364A (en) | Dry type high-frequency high-voltage transformer structure | |
| CN107154711A (en) | A kind of motor formed coil insulation thining method | |
| CN208596582U (en) | A kind of woven wire resistor | |
| US20140300241A1 (en) | Electrical machine medium voltage coil insulation systems and methods | |
| CN206672822U (en) | Switch equal laminated structure and 250kV high-tension cable oscillation wave partial discharge test system | |
| CN201868252U (en) | Novel four high-frequency high-voltage large-current film and coil type capacitor | |
| CN209767261U (en) | winding, generator and wind generating set | |
| CN201796732U (en) | Novel five-string high-frequency high-voltage heavy-current membrane foil type capacitor | |
| CN106128721A (en) | A kind of CVT electromagnetic unit intermediate transformer | |
| CN203312948U (en) | 10-kilovolt motor insulation system and interturn insulation structure thereof | |
| CN213817384U (en) | Corona-proof structure of high-voltage generator bar type winding VPI (voltage potential insulation) bar | |
| CN102360841A (en) | Grounded shield structure for dry rectifier transformer, and manufacturing method for grounded shield structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090513 Termination date: 20110627 |