CN201450380U - Anti-corona structure of stator coil of high-voltage motor - Google Patents
Anti-corona structure of stator coil of high-voltage motor Download PDFInfo
- Publication number
- CN201450380U CN201450380U CN2009200475645U CN200920047564U CN201450380U CN 201450380 U CN201450380 U CN 201450380U CN 2009200475645 U CN2009200475645 U CN 2009200475645U CN 200920047564 U CN200920047564 U CN 200920047564U CN 201450380 U CN201450380 U CN 201450380U
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- coil
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- resistance
- corona
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- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
The utility model relates to an anti-corona structure of a stator coil of a high-voltage motor, in particular to an anti-corona structure mainly used for the stator coil of a 10KV high-voltage three-phase asynchronous motor. According to the technical scheme provided by the utility model, the anti-corona structure of the stator coil of the high-voltage motor comprises a stator iron core, a coil, a powdered mica tape, a low-resistance tape, a high-resistance tape and a glass tape, wherein the coil is arranged on the stator iron core of the motor; a layer of integrated powdered mica tapes are wrapped at the outside of the straight-line section and the curve section of the coil; a layer of low-resistance tapes are wrapped on the powdered mica tape at the outside of the straight-line section of the coil; a layer of high-resistance tapes are wrapped on the powdered mica tape at the outside of the curve section of the coil; and a layer of glass tapes are wrapped at the outside of the high-resistance tape. The anti-corona structure eliminates the original baking step at the outside of the high-low resistance lapped area, and simultaneously lengthens the length of a baking and pressing block, thus not only guaranteeing critical coronal voltage of corona, having no need of any repair, and guaranteeing reliable, long-term and safe operation.
Description
Technical field
The utility model relates to a kind of anti dizzy structure of stator coil of motor, specifically is mainly used in the anti dizzy structure of 10KV high-voltage three-phase asynchronous motor stator coil.
Background technology
At present, the 10KV motor is the more product of Development and Production in recent years, the huge market demand, good in economic efficiency, but 10KV motor stator voltage height, coil gas corona voltage is also high, and the position of the easiest generation corona of high-voltage motor is the air gap in groove exit, winding overhang lead-in wire place, the insulation etc.After corona took place, gas and steam synergy such as ozone that decomposites and nitrogen oxide played the chemical corrosion effect to the insulation of coil, and chemical action is accompanied by will insulate very soon together corrosion and even puncture of heat effect, thus the shortening electrical machinery life.
Conduct in-depth analysis and study at the corona problem, causing the low main cause of coil discharge inception voltage is that anti dizzy structure is unreasonable, non-uniform electric, and the end winding voltage gradient is too big, so need take certain measure to change existing anti dizzy structure.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of discharge inception voltage that both can guarantee corona is provided, and need not to carry out any repairing, guarantees the anti dizzy structure of the high-voltage motor stator coil reliable, that long-term safety is moved.
The technical scheme that provides according to the utility model, the anti dizzy structure of described high-voltage motor stator coil, comprise stator core, coil, mica paper tape, low stopband, high stopband and glass tape, coil is installed on the motor stator-core, at the straightway of coil and the mica paper tape of bending section outer wrapping one deck integrated, the low stopband of parcel one deck on the mica paper tape outside being positioned at the coil straightway, the high stopband of parcel one deck on the mica paper tape outside being positioned at the coil bending section is at high stopband outer wrapping one deck glass tape.
The utility model removes the overseas original baking step of high low-resistance overlap, the length of bake pressure piece lengthening, has so both guaranteed the discharge inception voltage of corona, and need not to carry out any repairing simultaneously, guarantees reliable, long-term safety operation.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with concrete drawings and Examples.
As shown in the figure: the utility model mainly is made up of stator core 1, coil 2, mica paper tape 3, low stopband 4, high stopband 5 and glass tape 6 etc.
At the straightway of coil 2 and the mica paper tape 3 of bending section outer wrapping one deck integrated, mica paper tape 3, the low stopband 4 of parcel (being half-stack package) one deck on the mica paper tape 3 outside being positioned at coil 2 straightways, to anti-corona end, constitute overlap joint with mica paper tape 3, the high stopband 5 of parcel (being half-stack package) one deck on the mica paper tape 3 outside being positioned at coil 2 bending sections at high stopband 5 outer wrapping (being half-stack package) one deck glass tape 6, finishes until whole anticorona coating.
The utility model mica paper tape 3 is selected F level paulownia horse epoxy glass mica paper tape for use, and low stopband 4 selects for use SDZ corona-prevention belt, high stopband 5 to select for use SDGP corona-prevention belt, glass tape 6 to select FB-2A for use.
The utility model is simple, compact and reasonable for structure, and action effect is obvious; Under the situation that does not change structural material, the way that adopts is novel anti dizzy structure, coil surface twines low stopband, high stopband, high stopband and glass tape, remove the overseas original baking step of high low-resistance overlap, the length of bake pressure piece lengthening, so both guaranteed the discharge inception voltage of corona simultaneously, and made size Control again in the scope of drawing requirement, and need not to carry out any repairing, guarantee reliable, long-term safety operation.
Claims (1)
1. the anti dizzy structure of a high-voltage motor stator coil, comprise stator core (1), coil (2), mica paper tape (3), low stopband (4), high stopband (5) and glass tape (6), coil (2) is installed on the motor stator-core (1), it is characterized in that: at the straightway of coil (2) and the mica paper tape (3) of bending section outer wrapping one deck integrated, mica paper tape (3) outside being positioned at coil (2) straightway is gone up the low stopband (4) of parcel one deck, mica paper tape (3) outside being positioned at coil (2) bending section is gone up the parcel high stopband of one deck (5), at high stopband (5) outer wrapping one deck glass tape (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200475645U CN201450380U (en) | 2009-07-02 | 2009-07-02 | Anti-corona structure of stator coil of high-voltage motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200475645U CN201450380U (en) | 2009-07-02 | 2009-07-02 | Anti-corona structure of stator coil of high-voltage motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201450380U true CN201450380U (en) | 2010-05-05 |
Family
ID=42555103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200475645U Expired - Fee Related CN201450380U (en) | 2009-07-02 | 2009-07-02 | Anti-corona structure of stator coil of high-voltage motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201450380U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2009
- 2009-07-02 CN CN2009200475645U patent/CN201450380U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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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: 20100505 Termination date: 20100702 |