CN2674753Y - Stator wire bar coated corona-prevention structure - Google Patents
Stator wire bar coated corona-prevention structure Download PDFInfo
- Publication number
- CN2674753Y CN2674753Y CN 200420032559 CN200420032559U CN2674753Y CN 2674753 Y CN2674753 Y CN 2674753Y CN 200420032559 CN200420032559 CN 200420032559 CN 200420032559 U CN200420032559 U CN 200420032559U CN 2674753 Y CN2674753 Y CN 2674753Y
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- material layer
- layer
- anticorona
- wire bar
- corona
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Abstract
The utility model discloses an anti-corona treatment structure which adopts the coating mode for the large-sized high-voltage motor stator wire bar. The end surface of the motor stator wire bar is at least provided with more than one anti-corona material layer which is coated for many times. The number of the layer of the anti-corona material layer is 1-6. The thickness of every anti-corona material layer is contracted in turn or is equivalent from outside to inside. The utility model can improve the anti-corona ability of the stator wire bar, improve the electric field distribution of the wire bar in the actual operation process and extend the insulation long-time service life and the insulating ability of the wire bar.
Description
Technical field:
The utility model relates to the anticorona structure of stator winding conductor bars in electrical machines, particularly a kind of structure that adopts application pattern to carry out anticorona processing to the large high-voltage motor stator bar.
Background technology:
The end of prior motor stator bar is to adopt one-time formed mode to carry out the processing of coronal structure layer, its defective mainly shows in the process with main insulation mold pressing simultaneously, the adhesive of main insulation will be penetrated between the anticorona coating, cause the surface resistivity of anticorona coating to change, and this variation is difficult to quantitatively and control, make one-time formed anti-corona processing, its anti-corona weak effect, after the compression molding simultaneously of anticorona coating and main insulation, four corner angle of line rod are irregular, as carry out surface treatment, destroy the anticorona coating structure easily, anticorona coating will pollute solvent-free preserved material lacquer, thereby has a strong impact on the insulation property of line rod, shortens the useful life of line rod.
Summary of the invention:
Goal of the invention of the present utility model provides a kind of structure that adopts application pattern to carry out anticorona processing to the large high-voltage motor stator bar, this structure is that online stick end carries out at least once above coating, increase the number of plies of anticorona layer as required, can improve the anticorona ability of stator bar like this, improve the Electric Field Distribution of line rod in actual moving process simultaneously, prolong the long-term useful life and the insulation property of bar insulation.
Concrete technical scheme of the present utility model is as follows:
A kind of stator bar coating-type anti dizzy structure is characterized in that: the anticorona material layer that has the gradation coating more than one deck on the insulating surface of stator winding conductor bars in electrical machines end at least.
The number of plies of anticorona material layer described in the utility model is the 1-6 layer.
The single face thickness of every layer of anticorona material layer described in the utility model dwindles successively from outside to inside or equates.
The single face thickness of every layer of anticorona material layer described in the utility model is the 0.1-0.4 millimeter.
The length of every layer of anticorona material layer described in the utility model on the end face of stator winding conductor bars in electrical machines increases successively from the inside to surface and covers last layer anticorona material layer.
Anticorona material layer described in the utility model is to be uniformly mixed and formed on the insulating surface of stator winding conductor bars in electrical machines end with application pattern by resin, carborundum and graphite.
The utility model is determined the number of plies of anticorona layer and every layer thickness according to progression, the rated voltage of various electric pressures, anticorona processing.
The utility model can improve the anticorona ability of stator bar, improves the Electric Field Distribution of line rod in actual moving process simultaneously, prolongs the long-term useful life and the insulation property of bar insulation.
Accompanying drawing and drawing explanation:
Fig. 1 structural representation of the present utility model
Embodiment:
A kind of stator bar coating-type anti dizzy structure is characterized in that: the anticorona material layer 1 that has the gradation coating more than one deck on the insulating surface of stator winding conductor bars in electrical machines 2 ends at least.
The number of plies of anticorona material layer 1 described in the utility model is 3 layers.
The single face thickness of every layer of anticorona material layer 1 described in the utility model dwindles successively from outside to inside or equates.
Appraise and decide according to three layers, the thickness of every layer of anticorona material layer 1 described in the utility model single face thickness from outside to inside is respectively 0.2-0.4 millimeter, 0.15-0.3 millimeter, 0.1-0.2 millimeter.
The length of every layer of anticorona material layer 1 described in the utility model on the end face of stator winding conductor bars in electrical machines 2 increases successively from the inside to surface and covers last layer anticorona material layer 1.
Anticorona material layer 1 described in the utility model is to be uniformly mixed and formed on the insulating surface of the end of stator winding conductor bars in electrical machines 2 with application pattern by resin, carborundum and graphite.
The utility model can improve the anticorona ability of stator bar, improves the Electric Field Distribution of line rod in actual moving process simultaneously, prolongs the long-term useful life and the insulation property of bar insulation.
Claims (6)
1, a kind of stator bar coating-type anti dizzy structure is characterized in that: the anticorona material layer (1) that has the gradation coating more than one deck on the insulating surface of stator winding conductor bars in electrical machines (2) end at least.
2, a kind of stator bar coating-type anti dizzy structure according to claim 1, it is characterized in that: the number of plies of described anticorona material layer (1) is the 1-6 layer.
3, a kind of stator bar coating-type anti dizzy structure according to claim 1 and 2 is characterized in that: the single face thickness of described every layer of anticorona material layer (1) dwindles successively from outside to inside or equates.
4, a kind of stator bar coating-type anti dizzy structure according to claim 1 and 2, it is characterized in that: the single face thickness of described every layer of anticorona material layer (1) is the 0.1-0.4 millimeter.
5, a kind of stator bar coating-type anti dizzy structure according to claim 1 and 2 is characterized in that: the length of described every layer of anticorona material layer (1) on the end face of stator winding conductor bars in electrical machines 2 increases successively from the inside to surface and covers last layer anticorona material layer.
6, a kind of stator bar coating-type anti dizzy structure according to claim 1 and 2, it is characterized in that: described anticorona material layer (1) is to be uniformly mixed and formed on the insulating surface of stator winding conductor bars in electrical machines end with application pattern by resin, carborundum and graphite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420032559 CN2674753Y (en) | 2004-01-14 | 2004-01-14 | Stator wire bar coated corona-prevention structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420032559 CN2674753Y (en) | 2004-01-14 | 2004-01-14 | Stator wire bar coated corona-prevention structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2674753Y true CN2674753Y (en) | 2005-01-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420032559 Expired - Fee Related CN2674753Y (en) | 2004-01-14 | 2004-01-14 | Stator wire bar coated corona-prevention structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2674753Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100426630C (en) * | 2006-08-31 | 2008-10-15 | 施之英 | Method for twining VPI corona-prevention layer between stator coil main insulating layer and corona-prevention layer |
| CN113178971A (en) * | 2021-06-10 | 2021-07-27 | 哈尔滨电机厂有限责任公司 | Stator bar main insulation structure for improving winding corona voltage |
| CN113258703A (en) * | 2021-06-11 | 2021-08-13 | 哈尔滨电机厂有限责任公司 | Large-scale generator stator end bevel edge spacer corona discharge inhibition method |
-
2004
- 2004-01-14 CN CN 200420032559 patent/CN2674753Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100426630C (en) * | 2006-08-31 | 2008-10-15 | 施之英 | Method for twining VPI corona-prevention layer between stator coil main insulating layer and corona-prevention layer |
| CN113178971A (en) * | 2021-06-10 | 2021-07-27 | 哈尔滨电机厂有限责任公司 | Stator bar main insulation structure for improving winding corona voltage |
| CN113258703A (en) * | 2021-06-11 | 2021-08-13 | 哈尔滨电机厂有限责任公司 | Large-scale generator stator end bevel edge spacer corona discharge inhibition method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |