CN201230242Y - Terminal hoop fixing structure at the end of large-sized hydraulic turbo-generator stator winding - Google Patents
Terminal hoop fixing structure at the end of large-sized hydraulic turbo-generator stator winding Download PDFInfo
- Publication number
- CN201230242Y CN201230242Y CNU2008200903997U CN200820090399U CN201230242Y CN 201230242 Y CN201230242 Y CN 201230242Y CN U2008200903997 U CNU2008200903997 U CN U2008200903997U CN 200820090399 U CN200820090399 U CN 200820090399U CN 201230242 Y CN201230242 Y CN 201230242Y
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- China
- Prior art keywords
- sleeve pipe
- end hoop
- hoop
- glass fiber
- stator winding
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- Expired - Fee Related
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- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
The utility model relates to an end hoop fixing structure of a large-sized water wheel generator stator winding end part, and a glass wool sleeve pipe soft end hoop is wrapped by a glass fibre belt to be fixed on the winding end part; the surface of the glass wool sleeve pipe soft end hoop is provided with a layer room temperature solidifying epoxy brushing glue; and the glass wool sleeve pipe soft end hoop is divided into segments to be poured with the epoxy glue and is completely solidified. The end hoop fixing structure has the advantages that the design structure and the assembly technics are simple, clearances between the end hoop and the winding can be filled by expansion of a sleeve pipe after injecting resin to achieve the purpose of eliminating the clearances, and the effect is good.
Description
Technical field: the utility model relates to a kind of novel end hoop fixed structure of large-sized water turbine generator winding overhang.
Background technology: traditional large-sized water turbine generator stator winding end end hoop is to adopt stainless steel ring outsourcing insulation, and is fixed on the structure on the out frame.Its assembly structure is comparatively complicated, and stainless steel ring is that segmentation is welded, and being welded to connect the position needs scene insulation processing once more, and cushioning impregnation terylene felt binds round winding and end colligation and is solidified into one more afterwards.Shortcoming is that the gap between winding and the end hoop is difficult for adjusting the stress distribution inequality between end hoop and the winding overhang.This structure easily produces the discharge corrosion phenomenon to stator winding end fixture and contact site; And the gap inequality between end hoop and the winding overhang is easy to cause the stress concentration phenomenon, makes winding overhang damaged by mechanical force.The medium and small hydraulic generator of China adopts this structure always, has not had bigger change since the eighties.Yet, the fast development of the cause of China's hydroelectric development in recent years, the capacity of hydraulic generator also increases fast, the structure of hydraulic generator also continues to optimize, perfect, traditional winding terminal cuff structure design still can meet the demands at Pump for Medium and Small Power Generating Set, but can not adapt fully for the ultra-large type unit of 700MW grade as Three Gorges, Long Tan etc.(The Scarlet Letter repetition)
Summary of the invention: the purpose of this utility model provides a kind of good reliability, convenient, as to satisfy the above electric pressure of 20kV high voltage large-sized hydraulic generator stator winding terminal hoop fixed structure is installed.The purpose of this utility model realizes by following structure: the utility model is a kind of end hoop fixed structure of large-sized water turbine generator stator winding end, and the soft end hoop of glass fiber sleeve pipe is fixed on winding overhang by the glass fiber tape colligation; The soft end hoop of glass fiber sleeve pipe surface has one deck room-temperature curing epoxy brushing adhesive, and epoxy glue and full solidification are injected in the segmentation of the soft end hoop of glass fiber sleeve pipe.The soft end hoop of glass fiber sleeve pipe is made up of glass fiber braided sheath and glass fiber strand.Glass filament bundle is then twisted with the fingers to spin by the swollen yarn of glass fibre and is formed, this structure helps the absorption of injecting resin and resident, requirement to it mainly is a resilience: every cm length adds 30N power and is compressed to 40～50% of diameter along diametric(al), can return to more than 80% of diameter after the release.Novel winding terminal hoop fixed structure of the present utility model is the fixed structure that is solidified into fiberglass behind the soft end hoop injection of the glass fiber sleeve pipe resin, all is insulator, and does not link together with out frame, has reduced the possibility of electric discharge phenomena over the ground takes place.Mounting process is simple to operate, and can fill the gap between stator winding end and the end hoop to greatest extent, eliminates the mechanical stress between winding overhang and the end hoop, thereby improves the reliability of generator long-time running.Local terminal hoop fixed structure fills the domestic gaps, and technical indicator reaches domestic and international advanced level, can promote the use of large-scale water under high pressure turbine generator and (on 18～24kV) the stator winding end fixed structure, be with a wide range of applications.
Description of drawings:
Fig. 1 the utility model winding terminal cuff structure schematic diagram.
Embodiment:
The utility model as shown in Figure 1 is a kind of end hoop fixed structure of large-sized water turbine generator stator winding end, and the soft end hoop 2 of glass fiber sleeve pipe is fixed on winding overhang 1 by glass fiber tape 3 colligations; The soft end hoop of glass fiber sleeve pipe 2 surfaces have one deck room-temperature curing epoxy brushing adhesive, and epoxy glue and full solidification are injected in soft end hoop 2 segmentations of glass fiber sleeve pipe.
Assembly technique of the present utility model is as follows:
1) the soft end hoop of glass fiber sleeve pipe (generally being Φ 50mm) 2. with glass fiber tape 3. colligation be fixed on 1. assigned address of winding overhang;
2) at 2. external coating one deck room-temperature curing epoxy brushing adhesive of the soft end hoop of glass fiber sleeve pipe;
3) treat to inject the soft end hoop of glue injection glass fiber sleeve pipe 2. with glue-injection machine after the surperficial epoxy glue drying, can segmentation inject, and in 24h, once annotated as far as possible;
4) take the heating measure, get final product full solidification about 12h under 80～100 ℃ the condition, but perhaps also full solidification of 72h at ambient temperature.
Claims (1)
1, a kind of end hoop fixed structure of large-sized water turbine generator stator winding end is characterized in that: the soft end hoop of glass fiber sleeve pipe (2) is fixed on winding overhang (1) by glass fiber tape (3) colligation; The soft end hoop of glass fiber sleeve pipe (2) surface has one deck room-temperature curing epoxy brushing adhesive, and epoxy glue and full solidification are injected in the soft end hoop of glass fiber sleeve pipe (2) segmentation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200903997U CN201230242Y (en) | 2008-07-08 | 2008-07-08 | Terminal hoop fixing structure at the end of large-sized hydraulic turbo-generator stator winding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200903997U CN201230242Y (en) | 2008-07-08 | 2008-07-08 | Terminal hoop fixing structure at the end of large-sized hydraulic turbo-generator stator winding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201230242Y true CN201230242Y (en) | 2009-04-29 |
Family
ID=40635185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200903997U Expired - Fee Related CN201230242Y (en) | 2008-07-08 | 2008-07-08 | Terminal hoop fixing structure at the end of large-sized hydraulic turbo-generator stator winding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201230242Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101818410A (en) * | 2010-04-13 | 2010-09-01 | 嘉兴市新大陆机电有限公司 | Elastic bulk fiber rope for electric motor |
| CN101882844A (en) * | 2010-06-30 | 2010-11-10 | 上海电气电站设备有限公司 | Stator coil end encapsulating and fixing method |
| CN102969844A (en) * | 2012-12-26 | 2013-03-13 | 哈尔滨电气动力装备有限公司 | Process for binding and fixing end part of stator winding of large-size AC (Alternate Current) motor |
| CN110144743A (en) * | 2019-06-05 | 2019-08-20 | 南通东泰电工器材有限公司 | End of Turbogenerator assembles woven rope |
-
2008
- 2008-07-08 CN CNU2008200903997U patent/CN201230242Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101818410A (en) * | 2010-04-13 | 2010-09-01 | 嘉兴市新大陆机电有限公司 | Elastic bulk fiber rope for electric motor |
| CN101882844A (en) * | 2010-06-30 | 2010-11-10 | 上海电气电站设备有限公司 | Stator coil end encapsulating and fixing method |
| CN101882844B (en) * | 2010-06-30 | 2012-01-25 | 上海电气电站设备有限公司 | Stator coil end encapsulating and fixing method |
| CN102969844A (en) * | 2012-12-26 | 2013-03-13 | 哈尔滨电气动力装备有限公司 | Process for binding and fixing end part of stator winding of large-size AC (Alternate Current) motor |
| CN110144743A (en) * | 2019-06-05 | 2019-08-20 | 南通东泰电工器材有限公司 | End of Turbogenerator assembles woven rope |
| CN110144743B (en) * | 2019-06-05 | 2021-08-03 | 南通东泰电工器材有限公司 | Conformal rope for assembling end part of large-scale steam turbine generator |
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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: CHINA THREE GORGES CORPORATION Effective date: 20131120 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Sui Yinde Inventor after: He Shen Inventor after: Man Yuguang Inventor after: Gao Qingfei Inventor after: Wang Jiangang Inventor after: Wang Guohai Inventor after: Du Jianguo Inventor after: Tang Dunhao Inventor after: Wang Hong Inventor before: Sui Yinde Inventor before: He Shen Inventor before: Man Yuguang Inventor before: Gao Qingfei Inventor before: Wang Jiangang Inventor before: Wang Guohai |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: SUI YINDE HAO SHEN MAN YUGUANG GAO QINGFEI WANG JIANGANG WANG GUOHAI TO: SUI YINDE HAO SHEN MAN YUGUANG GAO QINGFEI WANG JIANGANG WANG GUOHAI DU JIANGUO TANG DUNHAO WANG HONG |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20131120 Address after: 150040 Harbin Motor Factory No. three, 99 power road, Harbin Power District, Heilongjiang, China Patentee after: Harbin Electric Machine Co., Ltd. Patentee after: China Three Gorges Corporation Address before: 150040 Harbin Motor Factory No. three, 99 power road, Harbin Power District, Heilongjiang, China Patentee before: Harbin Electric Machine Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090429 Termination date: 20160708 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |