DE718359C - With a liquid insulating medium, in particular an electric machine filled with oil - Google Patents
With a liquid insulating medium, in particular an electric machine filled with oilInfo
- Publication number
- DE718359C DE718359C DES129044D DES0129044D DE718359C DE 718359 C DE718359 C DE 718359C DE S129044 D DES129044 D DE S129044D DE S0129044 D DES0129044 D DE S0129044D DE 718359 C DE718359 C DE 718359C
- Authority
- DE
- Germany
- Prior art keywords
- oil
- conductor
- spacers
- machine
- insulating medium
- 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.)
- Expired
Links
- 239000007788 liquid Substances 0.000 title claims description 8
- 239000004020 conductor Substances 0.000 claims description 20
- 238000004804 winding Methods 0.000 claims description 15
- 238000009413 insulation Methods 0.000 claims description 10
- 125000006850 spacer group Chemical group 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 4
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 239000011810 insulating material Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulating Of Coils (AREA)
Description
Mit flüssigem Isoliermittel, insbesondere mit Öl gefüllte elektrische Maschine ' Die Erfindung bezieht sich auf mit flüssigen Isoliermitteln, insbesondere mit öl gefüllte elektrische Maschinen. Im Gegensatz zu den luftgefüllten Maschinen werden bei den ölgefüllten Maschinen bekanntlich die Leiter der Wicklungen mit Baumwolle, Papier o. dgl. umwickelt oder umsponnen und lediglich mit dem das Maschinengehäuse füllenden öl -durchtränkt.Liquid insulating material, especially electric ones filled with oil Machine 'The invention relates to using liquid insulating means, in particular electric machines filled with oil. In contrast to the air-filled machines In oil-filled machines, the conductors of the windings are known to be covered with cotton, Paper or the like wrapped or spun and only with the machine housing filling oil-soaked.
Die Erfindung geht von der Erkenntnis aus, daß schon das flüssige Isoliermittel allein eine genügende Isolation für die spannungsführenden Teile der Maschine bildet .und daß deshalb bei ölgefüllten Maschinen weitgehend mit festem Isoliermaterial gespart werden kann.The invention is based on the knowledge that the liquid Isolation means alone sufficient insulation for the live parts of the Machine forms. And that therefore largely with solid in oil-filled machines Insulating material can be saved.
Erfindungsgemäß besteht die Isolation der Einzelleiter der Maschinenwicklungen aus isolierenden Distanzstücken und dem die Zwischenräume dieser Distanzstücke ausfüllenden flüssigen Isoliermittel.According to the invention, the individual conductors of the machine windings are insulated of insulating spacers and the filling the spaces between these spacers liquid isolating agent.
Nicht zu verwechseln ist die Erfindung mit bekannten - Transformatoren- oder Maschnenwicklungen, bei denen .die einzelnen Wicklungslagen bzw. Scheibenspulen durch Distanzstücke voneinander getrennt- sind, wobei diese Distanzstücke unter Umständen auf einem Band befestigt sein können, das auf den die Wicklung bildenden Flachkupferleiter gelegt und mit diesem aufgespult wird. Bei den bekannten Wicklungsanordnungen haben die -Distanzstücke lediglich den Zweck, die Kühlung zu verbessern. Durch sie werden nämlich zwischen dien einzelnen Wicklungslagen bzw. Scheibenspulen Durchflußkanäle für das Kühlmittel frei gehalten. Auf die Isolierung der Einzelleiter durch eine ölfeste Isolierhülle kann dabei nicht verzichtet werden, denn sonst würden ja die einzelnen Wicklungslagen bzw. Scheibenspulen in sich kurzgeschlossen.The invention is not to be confused with known - transformers- or machine windings in which .die individual winding layers or disc coils are separated from each other by spacers, these spacers below Certain circumstances can be attached to a tape that forms the winding Flat copper conductor is laid and wound up with this. In the known winding arrangements the only purpose of the spacers is to improve cooling. Through them flow channels are namely between the individual winding layers or disc coils kept free for the coolant. On the insulation the single conductor an oil-proof insulating cover cannot be dispensed with, otherwise there would be yes, the individual winding layers or disc coils are short-circuited in themselves.
Beim Gegenstand der Erfindung kommt es im Gegensatz zu der bekannten Anordnung nicht darauf an, zwischen den einzelnen Leitern der Maschinenwicklung Kühlkanäle zu schaffen, durch .die das Öl frei hindurchfließen kann, sondern hier sollen die Distanzstücke zusammen mit der ruhenden Isolierflüsigkeit die Isolation der Einzelleiter der Maschinenwicklung bilden.The subject matter of the invention is in contrast to the known one Arrangement does not depend on between the individual conductors of the machine winding To create cooling channels through which the oil can flow freely, but here should the spacers together with the static insulating liquid provide the insulation form the single conductor of the machine winding.
Die Erfindung soll an Hand der in der Zeichnung dargestellten Ausführungsbeispiele näher .erläutert werden.The invention is based on the exemplary embodiments shown in the drawing will be explained in more detail.
In Fig. i bestehen die Distanzstücke aus einer um den Leiter i herumgewickelten Schnur 2, zwischen deren Windungen mehr oder weniger große Abstände sind. A l Stelle einer Schnur kann auch ein dünner Strang irgendeines Isolierstoffes, ein isolierter Metalldraht o. dgl. verwendet werden. .In Fig. I the spacers consist of one wound around the conductor i Cord 2, between the turns of which there are more or less large distances. A l place A cord can also be a thin strand of some kind of insulating material, an insulated one Metal wire or the like can be used. .
Fig. 2 zeigt eine ähnliche Ausführung mit Bandumwicklung. Die Bandwindungen brauchen sich nicht gegenseitig zu überlappen.Fig. 2 shows a similar embodiment with tape wrapping. The tape windings do not need to overlap each other.
In Fig. 3 sind auf den Leiter i Ringe 3 o. dgl. aufgereiht. Statt dessen können auch an, einzelnen Teilen der Leiteroberfläche Klötzchen ,angebracht werden.In Fig. 3 i rings 3 o. The like. Lined up on the conductor. Instead of its can also be attached to individual parts of the conductor surface blocks will.
Wie in Fig. 4 angedeutet ist, kann die Leiterisolierung auch aus einzelnen, an der Leiteroberfläche haftenden Körnern, Kristallen o. dgl. bestehen. Besonders eignen sich Körner aus Quarz, Aluminiumoxyd o. dgl.As indicated in Fig. 4, the conductor insulation can also consist of individual, Grains, crystals or the like adhering to the conductor surface. Particularly grains of quartz, aluminum oxide or the like are suitable.
Während bei luftgefüllten elektrischen Maschinen die Zwischenräume zwischen den schuppenförmigen Aluminiumoxydteilchen die Isolation gefährden, weil die Oberflächen der Teilchen durch Feuchtigkeit, Staub o. dgl. leitend werden, ist die schuppenförmige Struktur für ölgefüllte Maschinen: unschädlich. Auch wenn die Oxydteilchen beispielsweise beim Biegen des Leiters an einzelnen Stellen abbrechen, besteht keine Gefahr, wenn nur der haftengebliebene Rest zur Abstandshaltung vom Nachbarleiter bzw. vom Eisenpaket ausreicht.While in air-filled electrical machines the gaps between the flaky aluminum oxide particles endanger the insulation because the surfaces of the particles become conductive by moisture, dust or the like the flaky structure for oil-filled machines: harmless. Even if the Oxide particles break off at individual points when the conductor is bent, for example, there is no risk if only the remainder to keep a distance from the Neighboring conductor or from the iron package is sufficient.
Wie die Fig. 5 zeigt, kann der Leiter i wenigstens an einzelnen Stellen, beispielsweise an der dem benachbarten Leiter zugekehrten Breitseite 5, einen Alumiumumüberzug haben, der auf der freien Oberfläche oxydiert ist.As FIG. 5 shows, the conductor i can at least at individual points For example, on the broad side 5 facing the adjacent conductor, an aluminum coating which is oxidized on the exposed surface.
Eine derartige Leiterisolation ist für ölgefüllte Maschinen besonders vorteilhaft, wenn man die Leiter in Form von parallelflankigen Stapeln 7 (Fig. 6) anordnet, weil dann zwischen dien parallelflankigen Nuten wegen der starken Krümmung des Blechpaketes keilförmige Zähne stehenbleiben, in deren breiterem Teil vom Öldurchflutete Kanäle ä Platz finden können. Die starke Krümmung der Blechpakete von ölgefüllten Maschinen ist dadurch bedingt, daß mit Rücksicht auf Verringerung der Ölreibung der Läufer schlank gebaut werden muß.Such conductor insulation is particularly useful for oil-filled machines advantageous if the ladder is in the form of parallel-flanked stacks 7 (Fig. 6) arranged because then between the parallel flanked grooves because of the strong curvature of the laminated core, wedge-shaped teeth remain, in the wider part of which is flooded with oil Channels can find space. The strong curvature of the sheet metal stacks of oil-filled Machines is due to the fact that with a view to reducing the oil friction the runner must be built slim.
Die Erfindung bringt eine erhebliche Ersparnis an festem Isoliermaterial und ergibt eine Verbesserung der Isolation, weil diese größtenteils durch das hochwertige Öl gebildet wird. Die hochwertige Isolation gestattet ferner, die Isolationsschichten dünner zu machen und dadurch den Füllfaktor der Nut zu verbessern. Dies :ergibt rückwirkend wieder eine Verkleinerung der Nut, die wiederum eine Verringerung der Blechpaketdurchmesser zuläßt.The invention brings a considerable saving in solid insulating material and results in an improvement in insulation, because this is largely due to the high quality Oil is formed. The high quality insulation also allows the insulation layers to make it thinner and thereby improve the fill factor of the groove. This: results retrospectively again a reduction in the size of the groove, which in turn reduces the Laminated core diameter allows.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES129044D DE718359C (en) | 1937-10-07 | 1937-10-07 | With a liquid insulating medium, in particular an electric machine filled with oil |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES129044D DE718359C (en) | 1937-10-07 | 1937-10-07 | With a liquid insulating medium, in particular an electric machine filled with oil |
Publications (1)
Publication Number | Publication Date |
---|---|
DE718359C true DE718359C (en) | 1942-03-10 |
Family
ID=7538008
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DES129044D Expired DE718359C (en) | 1937-10-07 | 1937-10-07 | With a liquid insulating medium, in particular an electric machine filled with oil |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE718359C (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1017265B (en) * | 1954-12-24 | 1957-10-10 | Licentia Gmbh | Conductor arrangement for strongly cooled electrical machines, especially turbo generators |
DE973696C (en) * | 1954-02-24 | 1960-05-05 | Siemens Ag | Bars for electrical machines |
DE1096206B (en) * | 1958-11-07 | 1960-12-29 | Haeny & Cie | Centrifugal pump and electric motor filled with a liquid isolating agent |
DE102018112347A1 (en) * | 2018-05-23 | 2019-11-28 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Winding of an electric machine, electric machine and method of manufacturing the winding |
DE102020109209A1 (en) | 2020-04-02 | 2021-10-07 | Schaeffler Technologies AG & Co. KG | Power-generating component of a rotary electric machine and a rotary electric machine |
DE102020109211A1 (en) | 2020-04-02 | 2021-10-07 | Schaeffler Technologies AG & Co. KG | Power-generating component of a rotary electric machine and a rotary electric machine |
DE102021210277A1 (en) | 2021-09-16 | 2023-03-16 | Volkswagen Aktiengesellschaft | Electrical machine comprising electrical conductors arranged in a stator slot of a stator and method for arranging electrical conductors in a stator slot |
EP4189246A4 (en) * | 2020-07-31 | 2024-07-31 | Copenhagen Atomics A/S | ROTATIONAL DYNAMIC SPLITTING MACHINE FOR A MOLTEN SALT NUCLEAR REACTOR AND ACTIVE MAGNETIC BEARING FOR USE IN A FLOW MACHINE FOR A MOLTEN SALT NUCLEAR REACTOR |
-
1937
- 1937-10-07 DE DES129044D patent/DE718359C/en not_active Expired
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE973696C (en) * | 1954-02-24 | 1960-05-05 | Siemens Ag | Bars for electrical machines |
DE1017265B (en) * | 1954-12-24 | 1957-10-10 | Licentia Gmbh | Conductor arrangement for strongly cooled electrical machines, especially turbo generators |
DE1096206B (en) * | 1958-11-07 | 1960-12-29 | Haeny & Cie | Centrifugal pump and electric motor filled with a liquid isolating agent |
DE102018112347A1 (en) * | 2018-05-23 | 2019-11-28 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Winding of an electric machine, electric machine and method of manufacturing the winding |
US11165304B2 (en) | 2018-05-23 | 2021-11-02 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Winding of an electrical machine, electrical machine and method for producing the winding |
DE102020109209A1 (en) | 2020-04-02 | 2021-10-07 | Schaeffler Technologies AG & Co. KG | Power-generating component of a rotary electric machine and a rotary electric machine |
DE102020109211A1 (en) | 2020-04-02 | 2021-10-07 | Schaeffler Technologies AG & Co. KG | Power-generating component of a rotary electric machine and a rotary electric machine |
EP4189246A4 (en) * | 2020-07-31 | 2024-07-31 | Copenhagen Atomics A/S | ROTATIONAL DYNAMIC SPLITTING MACHINE FOR A MOLTEN SALT NUCLEAR REACTOR AND ACTIVE MAGNETIC BEARING FOR USE IN A FLOW MACHINE FOR A MOLTEN SALT NUCLEAR REACTOR |
DE102021210277A1 (en) | 2021-09-16 | 2023-03-16 | Volkswagen Aktiengesellschaft | Electrical machine comprising electrical conductors arranged in a stator slot of a stator and method for arranging electrical conductors in a stator slot |
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