WO2006056542A1 - Abdeckkappe - Google Patents
Abdeckkappe Download PDFInfo
- Publication number
- WO2006056542A1 WO2006056542A1 PCT/EP2005/055952 EP2005055952W WO2006056542A1 WO 2006056542 A1 WO2006056542 A1 WO 2006056542A1 EP 2005055952 W EP2005055952 W EP 2005055952W WO 2006056542 A1 WO2006056542 A1 WO 2006056542A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- housing
- spring
- dressing
- spring device
- cap according
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/38—Windings characterised by the shape, form or construction of the insulation around winding heads, equalising connectors, or connections thereto
Definitions
- the invention relates to a cap for a dressing of two electrically connected ends of two winding bars of a stator of an electric machine.
- the invention also relates to a stator provided with such covers.
- a stator winding of individual winding bars in particular in a generator or in an electric motor, for example a power plant, a stator winding of individual winding bars, so-called Roebel bars, constructed, which are led out at the axial ends of the stator and connected to each other in a suitable manner For example, to form poles of the winding.
- two winding rods are electrically conductively connected to each other at their ends, for example soldered together.
- the interconnected ends form a bandage, which must be protected from the outside and in particular electrically insulated.
- caps of the type mentioned are used, which are plugged for this purpose on the respective association.
- Such a cap comprises an electrically insulating housing, which in assembled state wrapped around the respective bandage circumferentially closed.
- Such caps may have a closed-sided housing or a housing open on both sides.
- a cap with one-sided closed housing can be attached, for example, to the respective dressing and then with an adhesive, in particular resin, poured out.
- the bandage can be wrapped with an adhesive, in particular synthetic resin, impregnated cord before the cap is placed. Both variants are extremely time-consuming and require careful handling in order to avoid contamination of the environment, in particular of the stator, with the adhesive.
- the invention deals with the problem of providing for a cover or for a stator equipped therewith an improved embodiment, in particular, the assembly of the cap is simplified.
- the invention is based on the general idea to fix the cap on the bandage by spring tension.
- the invention proposes to equip the housing with a spring device which makes it possible to attach the housing to the dressing, and which, when plugged in, generates a holding force sufficient for the housing firmly fixed to the dressing.
- the cap according to the invention can be mounted particularly simple and clean on each association.
- the assembly of the stator or the interconnected ends of the winding bars can thus be carried out particularly quickly.
- the effort to mount the covers and thus the stator is thereby considerably simplified.
- the spring means may comprise at least one spring which is provided with a semiconductive coating to reduce the corona effect.
- the corona effect which can occur at the usually uninsulated ends of the winding bars in the bandage, be reduced or avoided within the cap.
- FIG. 1 is an axial view of a stator
- FIG. 2 is a perspective view of two winding bars, 3 shows a longitudinal section through a dressing with cap,
- Fig. 4 is a longitudinal section as in Fig. 3, but at another
- Fig. 5 is a longitudinal section as in Fig. 3, but in another
- Fig. 6 is a longitudinal section as in Fig. 3, but in a rotated by 90 ° cutting plane.
- a stator 1 comprises an electrical machine, not shown, for example, a generator or an electric motor, preferably a power plant, a stator winding 2, which is composed of a plurality of individual winding bars 3, which led out of the stator 1 axially are.
- a stator winding 2 which is composed of a plurality of individual winding bars 3, which led out of the stator 1 axially are.
- two winding rods 3 are electrically conductively connected to each other at their ends 4, wherein the interconnected ends 4 form a dressing 5.
- Such a dressing 5 is covered in the stator 1 according to the invention with a cap 6.
- Fig. 2 shows two winding bars 3, which are electrically conductively connected to each other at their ends 4 shown in Fig. 2 right, in particular soldered or welded together, and said dressing 5 form.
- the cap 6 is not shown in Fig. 2.
- the winding bars 3 can be connected to the ends of other winding bars in basically the same way.
- These winding bars 3 are usually so-called “Roebel bars”.
- such a cap 6 has a housing 7 and a spring device 8. In the assembled state, the cap 6 is attached to the respective dressing 5 and covers it from the outside.
- the housing 7 expediently consists of an electrically insulating material, for example of plastic.
- the housing 7, as in the embodiments of FIGS. 3, 4 and 6, may be closed at one end by means of a bottom 9 or be open on both sides according to the embodiment shown in FIG. In any case, the housing 7 enveloped in the assembled state, the dressing 5 circumferentially closed.
- the spring device 8 is arranged in the interior of the housing 7.
- the spring device 8 is designed such that the housing 7 can be attached to an open side 10 for mounting on the dressing 5. That is, the spring device 8 is designed so that it does not prevent the attachment of the cap 6 on the dressing 5. Furthermore, the spring device 8 is designed so that it is supported in the mounted state on the one hand on the dressing 5 and on the other hand on the housing 7. In addition, the spring device 8 is designed so that it generates a holding force in the assembled state, which determines the housing 7 on the dressing 5. The holding force is symbolized in FIGS. 3 to 5 by arrows and denoted by 11.
- the spring device 8 has at least one spring 12. In the examples shown here is the
- Spring device 8 each equipped with two springs 12.
- the two springs 12 are arranged in the housing 7 so that they are diametrically opposite and thus positioned in the assembled state on both sides of the dressing 5. It is clear that the spring device 8 at another Embodiment with only a single spring 12 can get along and in other embodiments, more than two springs 12 may have.
- the springs 12 are attached to the housing 7.
- the springs 12 are glued into the housing 7.
- the housing 7 is molded from plastic, in particular by means of an injection molding process, wherein the springs 12 are embedded in the plastic, so encapsulated or overmolded. The production of this cover 6 is simplified.
- the springs 12 may be made of a conventional spring material, such as spring steel.
- the springs 12 are made of a plastic suitable for this purpose, which may in particular be fiber-reinforced, carbon fiber and / or glass fibers being particularly suitable for fiber reinforcement.
- the plastic may optionally be provided with an electrically conductive additive.
- the springs 12 are semiconductive, which is advantageous for reducing the corona effect that can occur at the ends 4 in the region of the dressing 5.
- the springs 12 may also be provided with a semiconducting coating, which also contributes to the reduction of the corona effect.
- the springs 12 are configured as corrugated springs. Such corrugated springs 12 can with a relatively small
- Expense can be shaped so that they can produce the desired Aufsteck and the desired holding power.
- the springs 12 protrude into the interior of the housing 7, so that they are supported on the outside of the dressing 5 in the assembled state and thus tensioned are. In this way, the desired holding force is generated by the spring tension.
- a transverse web 13 is formed, via which the two ends 4 are interconnected. Up to this crossbar 13, the two ends 4 are spaced from each other. A corresponding gap between the ends 4 is denoted by 14 in FIGS. 2 and 6. In the region of this transverse web 13, the electrical connection of the two ends 4 takes place. As can be seen further in FIGS. 2 and 6, the web 13 can at least partially be formed at least at one of the ends 4.
- an undercut 15 is formed in the dressing 5, which is used in the cap 6 according to the invention of the spring means 8 for fixing the cap 6 on the dressing 5.
- Such an undercut 15 can also be formed in another way, for example by a step on at least one of the ends 4 in a variant.
- the springs 12 can be designed such that they engage behind the mentioned undercut 15 in the mounted state. Furthermore, the springs 12 are designed to produce a holding force 11 in the mounted state, comprising a component 16 represented by arrows, which is oriented so as to drive the housing 7 with its bottom 9 against a front end 17 of the dressing 5 , In the embodiments of FIGS. 3 and 4, the bottom 9 comes directly to said front end 17 to the plant and is supported thereon with a corresponding, by Arrows symbolized resulting force 18 from. In this way, the cap 6 is particularly effectively secured against removal from the dressing 5.
- the bracing of the bottom 9 against the front end 15 may be replaced in another embodiment generally by a bracing of an inwardly projecting contour of the housing 7 against a corresponding mating contour of the dressing 5. Accordingly, this stressing principle can be readily realized even with a housing 7 open on both sides as in FIG. 5.
- the springs 12 are here designed so that they generate a holding force 11 in the assembled state, which has a symbolized by an arrow component 19 which acts orthogonally on the housing 7 and / or on the dressing 5.
- the orthogonal component 19 leads to a tension between the dressing 5 and the housing 7 transversely to the withdrawal direction. To remove the cap 6 then resulting friction forces must be overcome, which can be sufficiently large with appropriate material combinations.
- the orthogonal component 19 with the aid of the two springs 12 causes the springs 12 to clamp the dressing between them in the mounted state. At the same time a centering of the cap 6 can be realized on the dressing 5, provided that the two springs 12 are configured correspondingly symmetrical.
- FIG. 4 differs from that according to FIG. 3 in that, in the region of the transverse web 13, their springs 12 each have an additional contact zone for introducing the orthogonal component 19.
- the withdrawal force ie the force that is required to remove the cap 6 again from the dressing 5
- An additional securing of the cap 6 on the dressing 5 can be achieved by means of a bond 20.
- the housing 7 can be additionally fixed to the dressing 5.
- the spring device 8 is used for rapid assembly and realizes sufficient for mounting purposes peel strength.
- the respective adhesive is expedient when applying the cap 6 already applied in the housing 7 at a suitable location and can then cure at a later time to realize the particular desired increased peel strength.
- the adhesive connection 20 is arranged in the region of the bottom 9, whereby by means of
- each spring 12 is supported orthogonally on the dressing 5 in a first contact zone in the region of the transverse web 13, and in a region of the ends 4 adjacent to the transverse web 13 via a corresponding second contact zone. In this way, sufficiently large pull-off forces can also be realized in order to realize the desired Aufsteckback for the cap 6.
- the covering cap 6 according to the invention can be mounted particularly simply, since it only has to be attached to the dressing 5.
- the cap 6 secures at the same time by the spring device 8 a desired positioning, in particular a centering, the cap 6 relative to the dressing 5 can be achieved.
- the production cost for the stator 1 is thereby considerably simplified.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Frames (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2587599A CA2587599C (en) | 2004-11-24 | 2005-11-14 | Cover cap |
JP2007541936A JP4928462B2 (ja) | 2004-11-24 | 2005-11-14 | カバーキャップ装置および固定子 |
EP05803267A EP1815578A1 (de) | 2004-11-24 | 2005-11-14 | Abdeckkappe |
CN2005800402808A CN101065889B (zh) | 2004-11-24 | 2005-11-14 | 罩盖 |
US11/752,381 US7503801B2 (en) | 2004-11-24 | 2007-05-23 | Cover cap |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH01931/04 | 2004-11-24 | ||
CH19312004 | 2004-11-24 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/752,381 Continuation US7503801B2 (en) | 2004-11-24 | 2007-05-23 | Cover cap |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006056542A1 true WO2006056542A1 (de) | 2006-06-01 |
Family
ID=34974198
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2005/055952 WO2006056542A1 (de) | 2004-11-24 | 2005-11-14 | Abdeckkappe |
Country Status (6)
Country | Link |
---|---|
US (1) | US7503801B2 (de) |
EP (1) | EP1815578A1 (de) |
JP (1) | JP4928462B2 (de) |
CN (1) | CN101065889B (de) |
CA (1) | CA2587599C (de) |
WO (1) | WO2006056542A1 (de) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120112583A1 (en) * | 2010-11-09 | 2012-05-10 | Alstom Technology Ltd | Electric machine, insulating cap and method for forming an insulating cap |
EP2518866A1 (de) * | 2011-04-29 | 2012-10-31 | Alstom Hydro France | Isolierkappe für einen Wickelkopf einer mit Hochspannung arbeitenden elektrischen Maschine sowie Maschine mit einer solchen Isolierkappe |
CH704986A1 (de) * | 2011-05-20 | 2012-11-30 | Alstom Hydro France | Isolierkappe für einen Wickelkopf einer mit Hochspannung arbeitenden elektrischen Maschine sowie Maschine mit einer solchen Isolierkappe. |
US9644068B2 (en) | 2012-12-18 | 2017-05-09 | Basf Se | Semiconducting materials based on naphthalenediimide-vinylene-oligothiophene-vinylene polymers |
EP3459957A1 (de) | 2012-12-19 | 2019-03-27 | IGM Group B.V. | Derivate von bisacylphosphinsäure, deren herstellung und verwendung als photoinitiatoren |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2587599C (en) * | 2004-11-24 | 2015-06-02 | Alstom Technology Ltd | Cover cap |
US7630204B2 (en) * | 2005-03-28 | 2009-12-08 | Sandisk Il Ltd. | Detachable device holder |
CH699576A1 (de) * | 2008-09-29 | 2010-03-31 | Alstom Technology Ltd | Roebelstab für rotierende elektrische maschinen. |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6028733A (ja) * | 1983-07-26 | 1985-02-13 | Toshiba Corp | 回転子巻線端部の絶縁方法 |
DE4237079A1 (de) * | 1992-11-03 | 1994-05-05 | Abb Patent Gmbh | Elektrische Maschine |
WO2001056135A1 (en) * | 2000-01-27 | 2001-08-02 | Siemens Ltda. | An insulating cover and an electric machine |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3132202A (en) * | 1962-01-22 | 1964-05-05 | Vaco Products Co | Closed end electrical connector |
US3483310A (en) * | 1968-04-23 | 1969-12-09 | Ideal Ind | Connector insulator |
JPS5885778A (ja) * | 1981-11-17 | 1983-05-23 | 本田技研工業株式会社 | 自動二輪車用フロントフオ−ク |
JPS61199145A (ja) * | 1985-03-01 | 1986-09-03 | Hitachi Ltd | 媒体制御方式 |
JPS61199145U (de) * | 1985-05-31 | 1986-12-12 | ||
US4839470A (en) * | 1987-12-21 | 1989-06-13 | Ventura Robert M | Underwater (submersible) joint or splice |
US4849580A (en) * | 1988-02-11 | 1989-07-18 | Minnesota Mining And Manufacturing Company | Environmental protection closure for wire splices; and method |
JPH01286271A (ja) * | 1988-05-12 | 1989-11-17 | Nichifu Tanshi Kogyo:Kk | 閉端接続子用絶縁被覆筒の製造方法 |
JP3414883B2 (ja) * | 1995-04-26 | 2003-06-09 | 三菱電機株式会社 | 回転電機界磁コイルの極間接続装置 |
JP3651715B2 (ja) * | 1996-06-12 | 2005-05-25 | 株式会社東芝 | 回転子巻線端部の支持装置 |
JP3284981B2 (ja) * | 1998-11-02 | 2002-05-27 | 株式会社デンソー | 車両用交流発電機およびそのステータの製造方法 |
CA2587599C (en) * | 2004-11-24 | 2015-06-02 | Alstom Technology Ltd | Cover cap |
-
2005
- 2005-11-14 CA CA2587599A patent/CA2587599C/en not_active Expired - Fee Related
- 2005-11-14 EP EP05803267A patent/EP1815578A1/de not_active Withdrawn
- 2005-11-14 JP JP2007541936A patent/JP4928462B2/ja not_active Expired - Fee Related
- 2005-11-14 WO PCT/EP2005/055952 patent/WO2006056542A1/de active Application Filing
- 2005-11-14 CN CN2005800402808A patent/CN101065889B/zh not_active Expired - Fee Related
-
2007
- 2007-05-23 US US11/752,381 patent/US7503801B2/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6028733A (ja) * | 1983-07-26 | 1985-02-13 | Toshiba Corp | 回転子巻線端部の絶縁方法 |
DE4237079A1 (de) * | 1992-11-03 | 1994-05-05 | Abb Patent Gmbh | Elektrische Maschine |
WO2001056135A1 (en) * | 2000-01-27 | 2001-08-02 | Siemens Ltda. | An insulating cover and an electric machine |
Non-Patent Citations (2)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 009, no. 147 (E - 323) 21 June 1985 (1985-06-21) * |
See also references of EP1815578A1 * |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120112583A1 (en) * | 2010-11-09 | 2012-05-10 | Alstom Technology Ltd | Electric machine, insulating cap and method for forming an insulating cap |
US9118233B2 (en) * | 2010-11-09 | 2015-08-25 | Alstom Technology Ltd | Electric machine, insulating cap and method for forming an insulating cap |
EP2518866A1 (de) * | 2011-04-29 | 2012-10-31 | Alstom Hydro France | Isolierkappe für einen Wickelkopf einer mit Hochspannung arbeitenden elektrischen Maschine sowie Maschine mit einer solchen Isolierkappe |
US9018818B2 (en) | 2011-04-29 | 2015-04-28 | Alstom Renewable Technologies | Insulating cap for an end winding of an electrical machine working at high voltage and machine having such an insulating cap |
CH704986A1 (de) * | 2011-05-20 | 2012-11-30 | Alstom Hydro France | Isolierkappe für einen Wickelkopf einer mit Hochspannung arbeitenden elektrischen Maschine sowie Maschine mit einer solchen Isolierkappe. |
US9644068B2 (en) | 2012-12-18 | 2017-05-09 | Basf Se | Semiconducting materials based on naphthalenediimide-vinylene-oligothiophene-vinylene polymers |
EP3459957A1 (de) | 2012-12-19 | 2019-03-27 | IGM Group B.V. | Derivate von bisacylphosphinsäure, deren herstellung und verwendung als photoinitiatoren |
Also Published As
Publication number | Publication date |
---|---|
CA2587599A1 (en) | 2006-06-01 |
EP1815578A1 (de) | 2007-08-08 |
US7503801B2 (en) | 2009-03-17 |
CN101065889B (zh) | 2010-07-21 |
JP2008521375A (ja) | 2008-06-19 |
JP4928462B2 (ja) | 2012-05-09 |
CA2587599C (en) | 2015-06-02 |
CN101065889A (zh) | 2007-10-31 |
US20070270023A1 (en) | 2007-11-22 |
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