CN101304189B - Fixed structure for slot part of hydraulic turbine generator stator coil - Google Patents
Fixed structure for slot part of hydraulic turbine generator stator coil Download PDFInfo
- Publication number
- CN101304189B CN101304189B CN2008100536988A CN200810053698A CN101304189B CN 101304189 B CN101304189 B CN 101304189B CN 2008100536988 A CN2008100536988 A CN 2008100536988A CN 200810053698 A CN200810053698 A CN 200810053698A CN 101304189 B CN101304189 B CN 101304189B
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- low resistance
- coil
- groove
- glass cloth
- resistance glass
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- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
The invention relates to a fixed structure of a groove part of a turbine generator stator coil, which is characterized in that a coil coating a low resistance grey cloth is arranged in a stator iron core groove; a bottom stepping bar of the coil groove is arranged at the bottom part of the groove; a low resistance glass cloth backing plate and two middle stepping bars of the coil are arranged in the middle of the groove; a stepping bar at the opening of the coil groove and the low resistance glass cloth backing plate are arranged at the opening part of the groove; a wedge is arranged at the opening part of the groove; a low resistance glass cloth backing block and two low resistance glass cloth gaskets are arranged at the colligation position of the end part of the coil. The gaskets at the bottom part of the groove, the middle stepping bars and the stepping bars at the opening of the groove are all polysulfone low resistance suitable felt stepping bars of impregnation low resistance semiconductor varnish. The low resistance glass cloth backing blocks at the colligation position of the end part of the coil and the circumference of the gaskets are also lined with polysulfone low resistance suitable felt stepping bars of impregnation tung-ma glue and epoxy resin adhesive. The structure eliminates damage of insulation caused by vibrating friction and ozone corrosion. Furthermore, the fixed structure also has the advantages of simple structure, low cost, good insulating effect and easy production.
Description
Technical field
The present invention relates to a kind of hydraulic turbine generator stator coil mounting technique, especially a kind of fixed structure for slot part of hydraulic turbine generator stator coil.
Background technology
Stator winding is the heart of generator.The quality of the assurance stator winding especially insulation quality of winding is the key of generator life-span length.For the ease of rule, there are certain clearance in coil insulation outer surface and stator cell wall usually.In order to prevent to become flexible, usually adopt 9332 low resistance F level glass-cloth board liners to install at the stator core slot part, that is: at the inboard of the coil thick plate of 0.5mm, in the middle of coil, use thick plate and the thick plate adjustment of 0.5mm of 3mm, use the thick plate 1-2 bar of 0.5mm again in the coil outside, with slot wedge that coil stationary is tight at last; At coil lashing place thick cushion block and two pads that 1mm is thick of 5mm.Because the glass-cloth board of this structure coil liner is harder, thereby and coil between still gapped.Because the gap location insulating surface Electric Field Distribution of high-tension stator coil in going out notch and groove is uneven, so under the high voltage electric field effect, when local field strength reached critical field strength, airborne charged particle generation partial ionization produced ozone.Consequent ozone plays the aging of damaging action and accelerating coil insulation to the organic substance in the coil insulation.In addition, because the existence in coil insulation surface and stator cell wall gap, coil can become flexible because of vibration.The destruction that long-term vibration friction can cause coil insulation can be caused the motor short circuit when serious.
Summary of the invention
The present invention is for solving the fixed structure for slot part of hydraulic turbine generator stator coil that the technical problem that exists in the known technology provides a kind of coil and stator coring groove more firmly to contact, the gap is littler.
The technical scheme that the present invention takes for the technical problem that exists in the solution known technology is:
A kind of fixed structure for slot part of hydraulic turbine generator stator coil, comprise the stator core groove, be installed in the coil that is coated with the low resistance grey cloth in the groove, be installed in the coil bottom land filler strip of bottom portion of groove, be installed in two middle filler strips of middle low resistance glass cloth backing plate of groove and coil, be installed in the coil notch filler strip and the low resistance glass cloth backing plate of groove oral area, be installed in the slot wedge of groove oral area, and be installed in coil lashing place and the low resistance glass cloth cushion block between end winding and two low resistance glass cloth pads, filler strip is placed on the both sides of the middle described low resistance glass cloth backing plate of groove respectively in the middle of wherein said two, described coil notch filler strip is with respect to the more close coil of described low resistance glass cloth backing plate of groove oral area, described two low resistance glass cloth pads are placed on the both sides of described low resistance glass cloth cushion block, described bottom land filler strip respectively, middle filler strip and notch filler strip are the suitable type felt pan bar of polysulfones low resistance of dipping low resistance semiconductor lacquer.
The present invention can also adopt following technical scheme:
The low resistance glass cloth cushion block of described coil lashing place and pad periphery also are lined with the suitable type felt pan bar of polysulfones low resistance of dipping paulownia horse glue and epoxide-resin glue.
Advantage and good effect that the present invention has are:
Because in the middle of the coil bottom land of stator, groove and notch the suitable type felt pan bar of polysulfones low resistance of dipping low resistance semiconductor lacquer is set, make the characteristics of the existing insulating material of this filler strip, the sticking elasticity of hairiness is tight with coil stationary with slot wedge behind the rule again.The suitable type felt pan bar of polysulfones of the dipping low resistance semiconductor lacquer that this moment is soft will be full of the slit of coil periphery, and it will become as a whole with coil to wait to coat with lacquer dried back, firmly contact with cell wall; The overhang colligation is lined with the suitable type felt pan bar of polysulfones low resistance of dipping paulownia horse glue and epoxide-resin glue fixedly the time at low resistance glass cloth cushion block and pad periphery in addition, makes end winding firmer; In addition the present invention also have simple in structure, cost is low, insulation effect good, the advantage that is easy to make.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the coil lashing schematic diagram;
Fig. 3 is the E-E cutaway view of Fig. 2.
Among the figure: 1, bottom land filler strip; 2, coil; 3, low resistance glass-cloth board; 4, low resistance glass fiber tape; 5, low resistance glass-cloth board; 6, slot wedge; 7, notch filler strip; 8, middle filler strip; 9, middle filler strip; 10, groove; 11, stator core; 12, tie up rope; 13, low resistance glass cloth cushion block; 14, low resistance glass cloth pad; 15, low resistance glass cloth pad; 16, filler strip; 17, filler strip.
Embodiment
For further understanding summary of the invention of the present invention, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:
See also Fig. 1, in the groove 10 of stator core 11 coil 2 is installed, the coil outer surface is coated with low resistance grey cloth 4, the bottom land filler strip 1 of coil is installed at bottom portion of groove, two middle filler strips 8,9 of low resistance glass cloth backing plate 3 and coil are installed in the middle of groove, at the groove oral area notch filler strip 7 and the low resistance glass cloth backing plate 5 of coil are installed, slot wedge 6 are installed at the groove oral area.Described bottom land filler strip, middle filler strip and notch filler strip are the suitable type felt pan bar of polysulfones low resistance of dipping low resistance semiconductor lacquer, make the characteristics of the existing insulating material of this filler strip like this, the sticking elasticity of hairiness again, coil stationary is tight behind the rule with slot wedge, the suitable type felt pan bar of polysulfones of the dipping low resistance semiconductor lacquer that this moment is soft will be full of the slit of coil periphery, wait to coat with lacquer and do the back it will become as a whole with coil, not only eliminated the gap but also firmly contact with cell wall.In addition, the periphery of tying up rope low resistance glass cloth cushion block 13 at 12 places and pad 14,15 at end winding also is lined with the suitable type felt pan bar 16,17 of polysulfones low resistance of dipping paulownia horse glue and epoxide-resin glue, as shown in Figures 2 and 3, make end winding firmer like this, fixing of coil also played goodish booster action.Adopt the suitable type felt material of wind gathering that coil is carried out jam-pack and tie up solid motor, can eliminate by vibration friction, ozone corrosion and cause the insulation breakdown phenomenon to take place, thereby avoided causing the generation of major accidents such as motor shorted to earth effectively because of insulation breakdown; In addition the present invention also have simple in structure, cost is low, insulation effect good, the advantage that is easy to make.
Claims (2)
1. fixed structure for slot part of hydraulic turbine generator stator coil, comprise the stator core groove, be installed in the coil that is coated with the low resistance grey cloth in the groove, be installed in the coil bottom land filler strip of bottom portion of groove, be installed in two middle filler strips of middle low resistance glass cloth backing plate of groove and coil, be installed in the coil notch filler strip and the low resistance glass cloth backing plate of groove oral area, be installed in the slot wedge of groove oral area, and be installed in coil lashing place and the low resistance glass cloth cushion block between end winding and two low resistance glass cloth pads, filler strip is placed on the both sides of the middle described low resistance glass cloth backing plate of groove respectively in the middle of wherein said two, described coil notch filler strip is with respect to the more close coil of described low resistance glass cloth backing plate of groove oral area, described two low resistance glass cloth pads are placed on the both sides of described low resistance glass cloth cushion block respectively, it is characterized in that: described bottom land filler strip, middle filler strip and notch filler strip are the suitable type felt pan bar of polysulfones low resistance of dipping low resistance semiconductor lacquer.
2. fixed structure for slot part of hydraulic turbine generator stator coil according to claim 1 is characterized in that: the low resistance glass cloth cushion block of described coil lashing place and pad periphery also are lined with the suitable type felt pan bar of polysulfones low resistance of dipping paulownia horse glue and epoxide-resin glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100536988A CN101304189B (en) | 2008-06-30 | 2008-06-30 | Fixed structure for slot part of hydraulic turbine generator stator coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100536988A CN101304189B (en) | 2008-06-30 | 2008-06-30 | Fixed structure for slot part of hydraulic turbine generator stator coil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101304189A CN101304189A (en) | 2008-11-12 |
| CN101304189B true CN101304189B (en) | 2010-09-29 |
Family
ID=40113948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100536988A Expired - Fee Related CN101304189B (en) | 2008-06-30 | 2008-06-30 | Fixed structure for slot part of hydraulic turbine generator stator coil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101304189B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102122873B (en) * | 2010-12-18 | 2012-08-29 | 中电电机股份有限公司 | Main pole of separately excited DC (Direct Current) motor |
| CN102064647B (en) * | 2010-12-31 | 2012-08-08 | 中国科学院光电技术研究所 | Multi-stator arc motor for photoelectric tracking equipment |
| CN105245048B (en) * | 2015-11-12 | 2019-01-29 | 东方电气集团东风电机有限公司 | A kind of motor stator groove portion insulation system |
| CN112564364B (en) * | 2020-12-18 | 2022-08-09 | 重庆赛力盟电机有限责任公司 | Insulation structure of high-voltage motor |
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2008
- 2008-06-30 CN CN2008100536988A patent/CN101304189B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN101304189A (en) | 2008-11-12 |
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| C14 | Grant of patent or utility model | ||
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| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Sun Jiang Inventor after: Li Xiaoge Inventor after: Jin Lianhua Inventor after: Su Baoxun Inventor after: Dan Qingchen Inventor before: Li Xiaoge Inventor before: Jin Lianhua Inventor before: Su Baoxun Inventor before: Dan Qingchen |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: LI XIAOGE JIN LIANHUA SU BAOXUN DAN QINGCHEN TO: SUN JIANG LI XIAOGE JIN LIANHUA SU BAOXUN DAN QINGCHEN |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100929 Termination date: 20140630 |
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| EXPY | Termination of patent right or utility model |