EP2153509A2 - Abstützkorb für einen wickelkopf und zugehöriges herstellungsverfahren - Google Patents
Abstützkorb für einen wickelkopf und zugehöriges herstellungsverfahrenInfo
- Publication number
- EP2153509A2 EP2153509A2 EP08736379A EP08736379A EP2153509A2 EP 2153509 A2 EP2153509 A2 EP 2153509A2 EP 08736379 A EP08736379 A EP 08736379A EP 08736379 A EP08736379 A EP 08736379A EP 2153509 A2 EP2153509 A2 EP 2153509A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- support
- connectors
- basket
- circular
- support basket
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/50—Fastening of winding heads, equalising connectors, or connections thereto
- H02K3/505—Fastening of winding heads, equalising connectors, or connections thereto for large machine windings, e.g. bar windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/12—Impregnating, heating or drying of windings, stators, rotors or machines
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2203/00—Specific aspects not provided for in the other groups of this subclass relating to the windings
- H02K2203/09—Machines characterised by wiring elements other than wires, e.g. bus rings, for connecting the winding terminations
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49009—Dynamoelectric machine
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/5313—Means to assemble electrical device
- Y10T29/53143—Motor or generator
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/5313—Means to assemble electrical device
- Y10T29/53143—Motor or generator
- Y10T29/53152—Means to position insulation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/5313—Means to assemble electrical device
- Y10T29/53143—Motor or generator
- Y10T29/53157—Means to stake wire to commutator or armature
Definitions
- the present invention relates to a method for producing a support basket with circular connectors for a winding head of a stator winding of an electrical machine.
- the invention also relates to a support basket with circular connectors for a winding head of a stator winding of an electrical machine.
- a stator with an electric stator winding.
- This stator winding is led out of the stator at least at one axial end of the stator and forms a winding head there.
- a winding head is formed by end portions of rod-shaped conductors of the stator winding, which are angled in the radial direction and in the circumferential direction, such that the winding head has the shape of a truncated cone, which widens with increasing distance from the associated end-side stator end.
- a support basket is provided to support the winding head. This can be distributed more in the circumferential direction having arranged support angle, which are arranged radially outside of the winding head.
- Such a support basket usually has one or two support rings, which extend in the circumferential direction and to which the support brackets are attached.
- the support rings can support the support angle radially and thereby allow the inclusion of radial support forces.
- the winding bar sections of the winding head are electrically connected at their bar ends in a complex, predetermined manner with a plurality of so-called circular connectors, which in turn form electrical connections on the winding head.
- the stator winding can be connected to said power system.
- the circular connectors used for this purpose must be electrically insulated and must also be impregnated in order to prevent ingress of moisture.
- wet or dry insulate the round connectors As individual parts.
- Wet insulated round connectors are also dried or hardened as individual parts.
- Wet insulated round connectors basically do not require impregnation.
- dry-insulated circular connectors must be additionally impregnated.
- a corresponding impregnation tool can be used.
- For long round connectors it may be necessary to insulate them before drying mechanically separated, then impregnated and only then reassemble, for example by welds or solder joints. Subsequently, the welding or soldering joints must be locally wet-insulated and dried or cured.
- the support basket For mounting the winding head, it is also possible to attach the support basket at the respective stator end, so to assemble the support bracket and the support rings at the end of the stator. Subsequently, the finished insulated and optionally impregnated round connector can be mounted on the support basket, for which appropriate fasteners are used. When mounting the round connector they can be moved along the support bracket. In order to avoid damage to the insulation or impregnation, wet upholstery can be used here. After mounting the round connector and the fasteners used are locally wet impregnated. The associated drying or curing of these local impregnation points can be realized, for example, in the context of a heat treatment of the stator. Overall, such a manufacturing process is relatively expensive.
- the invention deals with the problem of providing for a manufacturing method of the type mentioned or for a support basket with circular connectors of the type mentioned in an improved embodiment, in particular by a simplified manufacturability of the winding head or of the support basket.
- This problem is solved according to the invention by the subject matters of the independent claims.
- Advantageous embodiments are the subject of the dependent claims.
- the invention is based on the general idea of first constructing the support basket independently of the stator with support brackets, at least one support ring and all circular connectors, in order subsequently to impregnate a completely pre-assembled unit.
- the impregnation is carried out by immersion in a impregnating agent and evacuating the impregnating agent.
- a high-quality impregnation is achieved, which avoids in particular air pockets in hidden areas.
- It is particularly advantageous in the proposed approach that a fully impregnated preassembled unit is created, which can be attached as such to the stator, without further relative movements between the support brackets and the pipe connectors must be performed. The risk of damage to the impregnation or insulation due to relative movements between support brackets and round connector can thereby be significantly reduced.
- Fig. 1 is an axially sectional view of a support basket with
- Fig. 2 is a plan view of the support basket with circular connectors in
- Impregnating bath according to a viewing direction Il in Fig. 1 Impregnating bath according to a viewing direction Il in Fig. 1,
- FIG. 3 is a sectional view corresponding to section lines III in Fig. 2,
- Fig. 4 is a view as in Fig. 1, but at another
- FIG. 5 shows a plan view of the arrangement shown in FIG. 4 corresponding to a viewing direction V in FIG. 4, FIG.
- a support basket 1 has a plurality of support angles 2, which are arranged distributed with respect to a longitudinal central axis 3 of the support basket 1 in the circumferential direction. Furthermore, the support basket 1 has at least one support ring 4 or 5.
- the embodiment shown in FIGS. 1 to 3 has two support rings 4, 5, while the embodiment shown in FIGS. 4 to 6 has only one support ring 4.
- the support brackets 2 are attached to the respective support ring 4, 5.
- round connectors 6 are attached to the support basket 1. These are arranged on the support brackets 2 with respect to the longitudinal central axis 3 radially outward and extend in the circumferential direction. Furthermore, the circular connector 6 are attached to the support brackets 2. As fasteners serve in the embodiments shown here cords 7, which are preferably glass cords. Furthermore, the round connector 6 are suitably insulated. A corresponding electrical insulation can be seen in the enlarged view of FIG. 3 or FIG. 6 and denoted by 8.
- the circular connectors 6 by way of example have a hollow profile. In addition, they have here for example a round, in particular a circular cross-section. In contrast, in the embodiment shown in FIGS. 4 to 6, the round connectors 6 have a solid profile and, by way of example, have a rectangular cross section. Likewise, other cross-sectional profiles are conceivable, such as a square cross-section. Likewise, the rectangular profiled round connector 6 can be made hollow. Likewise, also provided with a round or circular cross-section round connector 6 may have a solid profile.
- the support basket 1 is used for mounting on a stator of an electrical machine, which is preferably a generator. In principle, however, it may also be an electric motor.
- the stator has a stator winding, which is guided out of the stator at least at an axial end face of the stator and forms a winding over there.
- This winding head must be supported.
- the winding head is thereby formed in a conventional manner by Wicklungsstabendabête axially protrude from the axial end face of the stator, where they are bent in the radial direction outwards and in the circumferential direction to form there a frusto-conical association with increasing distance from the stator end in terms of its cross-section widens.
- the winding head thus formed is then supported radially outwardly from the support basket.
- an axial support of the winding head can be realized at the end of the stator by means of the support basket 1.
- the support angle 2 can be supported axially at the end of the stator.
- the support rings 4, 5 can also absorb radial forces.
- they can also absorb radial forces and thereby contribute to the stabilization of the support basket 1.
- the support basket 1 shown in FIGS. 1 to 3 has an axially outer, ie outer support ring 4 and an axially inner, ie inner support ring 5.
- the outer support ring 4 engages over the support angle 2 radially, causing them can support it in the radial direction.
- the embodiment shown in FIGS. 4 to 6 of the support basket 1 only shows an axially outer, outer support ring 4. This is axially mounted on the support brackets 2.
- the round connector 6 serve to the Wicklungsstabendabismee electrically connect in a predetermined manner, so as to form electrical connections 9.
- the circular connectors 6 are connected to the rod ends of the winding bar sections in a suitable manner. Corresponding connecting pieces can be seen, for example, in FIG.
- the support basket 1 is preferably produced as follows:
- the round connector 6 are isolated.
- a dry insulation is used here.
- insulation strips which use mica as the insulating material so-called mica insulation strips, are suitable for dry insulation.
- the support brackets 2 are arranged circumferentially distributed and fixedly connected to the one support ring 4 and with two support rings 4, 5. This creates a framework on which the insulated circular connector 6 can be mounted. This is the next step.
- the insulated circular connectors 6 are mounted on the framework held together by the at least one support ring 4, 5 from the support brackets 2.
- the circular connector 6 are attached to the support brackets 2, wherein preferably the cords 7 shown here are used.
- the round connector ends can be attached to each other, for example, to form the terminals 9.
- the open ends are to be sealed accordingly, for example by suitable plugs.
- the support basket 1 has mechanical interfaces that may not be impregnated, they are covered with a corresponding coating.
- Fig. 6 is also seen that the round connector 6 via special pad 11 at the support brackets 2 can be supported. As a result, the load on the circular connector 6 can be reduced.
- the support basket 1 thus prepared, which in itself is mechanically assembled, can then be immersed in an impregnating bath 12, which is surrounded by a corresponding basin 13.
- the impregnating agent bath 12 is additionally evacuated.
- the basin 13 is closed with a lid, not shown here and connected to a corresponding vacuum source. Air pockets are thereby removed, whereby the desired homogeneous wetting can be achieved.
- the support basket 1 After curing of the impregnating the support basket 1 is completed. It is characterized in particular by the fact that its circular connectors 6 are dip-impregnated in the mounted state, that is to say with the support brackets 2 and the corresponding fastening means.
- the completed Abstützkorb 1 can be mounted after curing of the impregnation on the stator. Subsequently, when winding the stator of the Winding head constructed and electrically connected to the circular connectors 6.
- the longitudinal central axis 3 of the support basket 1 When assembled, the longitudinal central axis 3 of the support basket 1 then coincides with a rotational axis of a rotor of the electrical machine.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Of Motors, Generators (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH7512007 | 2007-05-09 | ||
PCT/EP2008/054734 WO2008138704A2 (de) | 2007-05-09 | 2008-04-18 | Abstützkorb für einen wickelkopf und zugehöriges herstellungsverfahren |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2153509A2 true EP2153509A2 (de) | 2010-02-17 |
Family
ID=38329570
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08736379A Withdrawn EP2153509A2 (de) | 2007-05-09 | 2008-04-18 | Abstützkorb für einen wickelkopf und zugehöriges herstellungsverfahren |
Country Status (3)
Country | Link |
---|---|
US (2) | US8074343B2 (de) |
EP (1) | EP2153509A2 (de) |
WO (1) | WO2008138704A2 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2153509A2 (de) | 2007-05-09 | 2010-02-17 | Alstom Technology Ltd | Abstützkorb für einen wickelkopf und zugehöriges herstellungsverfahren |
DE102009021063A1 (de) | 2009-05-13 | 2010-11-18 | Alstom Technology Ltd. | Wickelkopf für eine elektrische Maschine und Verfahren zu dessen Herstellung |
JP2015046958A (ja) * | 2013-08-27 | 2015-03-12 | 日立金属株式会社 | 集配電リング |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3089048A (en) * | 1960-06-03 | 1963-05-07 | Gen Electric | Winding support system for a dynamoelectric machine |
US3145317A (en) * | 1960-10-21 | 1964-08-18 | Gen Electric | Harness connection for dynamoelectric machines |
DE2231292C3 (de) * | 1972-06-26 | 1980-02-14 | Kraftwerk Union Ag, 4330 Muelheim | Wickelkopfabstützung für die Ständerwicklung elektrischer Maschinen, insb. Turbogeneratoren |
US4314173A (en) * | 1980-04-10 | 1982-02-02 | Westinghouse Electric Corp. | Mounting bracket for bracing peripheral connecting rings for dynamoelectric machines' stator windings |
JPS5956858A (ja) * | 1982-09-24 | 1984-04-02 | Hitachi Ltd | 直流機の電機子 |
JPS59156133A (ja) * | 1983-02-23 | 1984-09-05 | Mitsubishi Electric Corp | 回転電機固定子巻線の端部固定用絶縁リングの製造方法 |
DE102004016454A1 (de) * | 2004-03-31 | 2005-10-20 | Alstom Technology Ltd Baden | Elektrische Maschine mit Rotor und Stator |
EP2153509A2 (de) | 2007-05-09 | 2010-02-17 | Alstom Technology Ltd | Abstützkorb für einen wickelkopf und zugehöriges herstellungsverfahren |
-
2008
- 2008-04-18 EP EP08736379A patent/EP2153509A2/de not_active Withdrawn
- 2008-04-18 WO PCT/EP2008/054734 patent/WO2008138704A2/de active Application Filing
-
2009
- 2009-11-02 US US12/610,428 patent/US8074343B2/en active Active
-
2011
- 2011-11-04 US US13/289,263 patent/US9027233B2/en active Active
Non-Patent Citations (1)
Title |
---|
None * |
Also Published As
Publication number | Publication date |
---|---|
US20120049681A1 (en) | 2012-03-01 |
US9027233B2 (en) | 2015-05-12 |
WO2008138704A3 (de) | 2009-10-22 |
WO2008138704A2 (de) | 2008-11-20 |
US20100066202A1 (en) | 2010-03-18 |
US8074343B2 (en) | 2011-12-13 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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17P | Request for examination filed |
Effective date: 20091029 |
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AK | Designated contracting states |
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AX | Request for extension of the european patent |
Extension state: AL BA MK RS |
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DAX | Request for extension of the european patent (deleted) | ||
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: GENERAL ELECTRIC TECHNOLOGY GMBH |
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GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
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INTG | Intention to grant announced |
Effective date: 20170303 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20170714 |