CN201051688Y - Faint-prevention structure for 1000MW generator vacuum pressure dipped stator loop - Google Patents
Faint-prevention structure for 1000MW generator vacuum pressure dipped stator loop Download PDFInfo
- Publication number
- CN201051688Y CN201051688Y CNU2007200707342U CN200720070734U CN201051688Y CN 201051688 Y CN201051688 Y CN 201051688Y CN U2007200707342 U CNU2007200707342 U CN U2007200707342U CN 200720070734 U CN200720070734 U CN 200720070734U CN 201051688 Y CN201051688 Y CN 201051688Y
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- CN
- China
- Prior art keywords
- coil
- generator
- vacuum pressure
- stopband
- mica tape
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- Expired - Lifetime
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- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
The utility model relates to a vacuum pressure impregnation stator coil anti-corona structure for 1000 MW generators, which comprises a generator iron core and a coil which is arranged in the generator iron core. The coil is characterized in that the a mica tape is arranged on the outer coil, and a middle resistance band, a middle high resistance band, a high resistance band, and a high resistance are arranged on the outer side of the mica tape in turn. The utility model has the advantages of easy manufacture and reliable test, which largely increases the operation life of the generator stator insulation.
Description
Technical field
The utility model relates to a kind of 1000MW level generator vacuum pressure impregnation stator coil anti dizzy structure, can be used for 27kV level high-voltage generator, belongs to the electricity generator stator coil technical field.
Background technology
Overhang is anti-corona mainly to be the silicon carbide powder that adopts different resistances at coil surface, constitutes rational voltage gradient, with the even transition of assurance end winding along the face current potential, thereby reaches anti-corona effect structure.Carborundum can be modulated into the lacquer of different resistances, brushes anti-corona; Perhaps make the anticorona varnish strap of different resistances, be wound in coil surface, one-shot forming when coil die stamping.
Owing to use the corona-prevention belt one-shot forming, technology is convenient, and it is main insulation system that the many rubber mouldings of suitable China coil are pressed, be able to generally adopt at home, all reach all the time and more use in the low-voltage grade, can't satisfy the production requirement of 1000MW/27kV level generator vacuum pressure impregnation stator coil at 20-24kV.
External generator manufacturing merchant's 1000MW/27kV level generator vacuum pressure impregnation stator coil is anti-corona to have adopted the mopping of the different resistances in 5 roads anti-corona, production cycle is long, particularly because brush 5 roads lacquer, enamelled coating is thick, high voltage generates heat uneven down easily and chaps, rework rate is higher, and generator coil 3E (E is a rated voltage) electrical ageing test also can't once be realized on existing product.
Summary of the invention
The purpose of this utility model provides that a kind of electricity of the main insulation for 1000MW/27kV level generator vacuum pressure impregnation stator coil is aging to provide one-pass anti dizzy structure.
For realizing above purpose, the technical solution of the utility model provides a kind of 1000MW level generator vacuum pressure impregnation stator coil anti dizzy structure, comprise generator core, coil, coil is located in the generator core, it is characterized in that, at the coil peripheral hardware mica tape is arranged, outside mica tape, be provided with successively middle stopband, in high stopband, high stopband and high resistant cover tape.
The utility model twines low stopband, middle stopband, high stopband, high resistant cover tape and mica tape at coil surface, to realize the transition of different resistances, one-shot forming in mold process, 3E is by 120 hours, the 2E AC voltage withstand test by 1200 hours, and need not carry out any repairing, the ability of its withstand long term exposure voltage has guaranteed that the generator unit stator winding can reliable, long-term safety operation.
The utility model has the advantages that easily manufactured time test is reliable, improve the service life of generator stator insulator greatly.
Description of drawings
Fig. 1 is a 1000MW level generator vacuum pressure impregnation stator coil anti dizzy structure structural representation.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
Embodiment
As shown in Figure 1, be 1000MW level generator vacuum pressure impregnation stator coil anti dizzy structure structural representation, a kind of 1000MW level electricity generator stator coil anti dizzy structure by generator core 1, coil 2, mica tape 3, middle stopband 4, in high stopband 5, high stopband 6 and high resistant cover tape 7 form.
Coil 2 is installed in 1 li of generator core, half-stack package one deck mica tape 3 is to anti-corona end outside coil 2, stopband 4 in half-stack package one deck outside mica tape 3 constitutes overlap joint, high stopband 5 in middle stopband 4 half-stack package one decks with mica tape 3, constitute overlap joint with middle stopband 4, in the high stopband 6 of half-stack package one deck outside the high stopband 5, with in high stopband 5 constitute overlap joint, half-stack package one deck high resistant cover tape 7 outside high stopband 6, constitute overlap joint with high stopband 6, finish until whole anticorona coating.
In stopband 4 select the X-5 corona-prevention belt for use, in high stopband 5 select the X-4 corona-prevention belt for use, high stopband (6) is selected the X-3 corona-prevention belt for use, high resistant cover tape 7 is selected FB-2A for use.
After single coil test is finished, outside whole anti-corona zone, brush the mylar of bag glass tape and anti-electric arc, provide mechanical protection to anticorona coating; Carborundum is electroluminescent to be covered; And since its dielectric constant between main insulation and air, as transition, help to lower coil surface normal direction field intensity component, thereby optimize anti-corona effect.
Claims (1)
1.1000MW level generator vacuum pressure impregnation stator coil anti dizzy structure, comprise generator core (1), coil (2), coil (2) is located at generator core (1) lining, it is characterized in that, outside coil (2), be provided with mica tape (3), outside mica tape (3), be provided with successively middle stopband (4), in high stopband (5), high stopband (6) and high resistant cover tape (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200707342U CN201051688Y (en) | 2007-06-07 | 2007-06-07 | Faint-prevention structure for 1000MW generator vacuum pressure dipped stator loop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200707342U CN201051688Y (en) | 2007-06-07 | 2007-06-07 | Faint-prevention structure for 1000MW generator vacuum pressure dipped stator loop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201051688Y true CN201051688Y (en) | 2008-04-23 |
Family
ID=39338180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200707342U Expired - Lifetime CN201051688Y (en) | 2007-06-07 | 2007-06-07 | Faint-prevention structure for 1000MW generator vacuum pressure dipped stator loop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201051688Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101345458B (en) * | 2008-05-22 | 2010-10-06 | 山东齐鲁电机制造有限公司 | Full anti-dizzy VPI impregnation stator line stick and its industrial frequency overpressure-resistant detection method |
| CN102447361A (en) * | 2010-10-12 | 2012-05-09 | 哈尔滨电机厂有限责任公司 | Preparation method for realizing one-time dip forming of main insulation and anticorona layer of stator coil of large-scale high voltage motor |
-
2007
- 2007-06-07 CN CNU2007200707342U patent/CN201051688Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101345458B (en) * | 2008-05-22 | 2010-10-06 | 山东齐鲁电机制造有限公司 | Full anti-dizzy VPI impregnation stator line stick and its industrial frequency overpressure-resistant detection method |
| CN102447361A (en) * | 2010-10-12 | 2012-05-09 | 哈尔滨电机厂有限责任公司 | Preparation method for realizing one-time dip forming of main insulation and anticorona layer of stator coil of large-scale high voltage motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI ELECTRIC POWER STATION EQUIPMENT CO. Free format text: FORMER OWNER: SHANGHAI STEAM TURBINE GENERATOR CO. LTD. Effective date: 20080523 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20080523 Address after: No. 188, Chun Chun Road, Shanghai, Minhang District: 201100 Patentee after: Shanghai Electric Station Equipment Co., Ltd. Address before: No. 555, Jiangchuan Road, Shanghai, Minhang District: 200240 Patentee before: Shanghai Turbine Generator Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080423 |