EP0993007B1 - Transformer device with cooling circuit - Google Patents
Transformer device with cooling circuit Download PDFInfo
- Publication number
- EP0993007B1 EP0993007B1 EP99250348A EP99250348A EP0993007B1 EP 0993007 B1 EP0993007 B1 EP 0993007B1 EP 99250348 A EP99250348 A EP 99250348A EP 99250348 A EP99250348 A EP 99250348A EP 0993007 B1 EP0993007 B1 EP 0993007B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- transformer
- cooling
- housing
- coil
- cooling channels
- 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.)
- Revoked
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2876—Cooling
Definitions
- the invention relates to a transformer arrangement with cooling circuit, especially for use as Railway transformer arrangement according to the preamble of Main claim.
- a transformer arrangement according to the The preamble of claim 1 is from FR-A-1 510 551 known.
- railway transformers which act as disc winders are formed, the primary and Secondary windings are designed as disks are arranged axially side by side on the core.
- Such transformers are provided with cooling, where the coolant, here transformer oil over nozzles under high pressure between and on the disc-shaped windings is energized. The oil is drawn off via a pump and fed to a cooler and then used again for cooling.
- Such a known disc winder with cooling has the disadvantage that the on or between the Coils injected cold oil very quickly with that hot oil in the transformer mixes so that a large amount of oil, e.g. 1000 l circulated must be, if only 400 l are effectively necessary.
- large sizes occur in a disc winder axial short-circuit forces on those with corresponding Clamping elements must be taken into account.
- the invention has for its object a transformer arrangement to create the small dimensions and has an effective cooling system available provides.
- the transformer is designed as a layer winder is where between the winding layers Cooling channels are provided that are targeted and essentially laminar flows through the cooling medium can be a transformer arrangement with extreme low height are made available has an extraordinarily high cooling efficiency.
- the transformer coil is almost in shape a heat exchanger formed, the cooling channels can be very thin, e.g. clear spaces of smaller 3 mm. This makes it a low all-round The amount of oil required, the speed is slow and the pressure drops are also low.
- the loss generator i.e. the Transformer coil heated amount of oil after recooling through the cooler directly without mixing with the Oil in the housing to cool the coil again the cooling efficiency is increased.
- the the advantage that arises here lies in the respective Difference to the resulting mixing temperature recooled liquid and the liquid that according to the amount of liquid in the boiler and their possibility for temperature compensation directed.
- An adjustment of the temperatures with the boiler liquid can only in the area of the short inlet channels take place in the cauldron. Because of the low the aggregates, how circulation pump and cooler are made smaller. Because the pressure drops in the controlled management of the cooling medium through the cooling channels at which cold oil specifically introduced into the hot coil is, the cooling medium becomes less Pressure e.g. Atmospheric pressure, introduced into the housing, whereby this is designed as a low pressure boiler can be, which has the consequence that it is easier can be built as it is in the state of the art Case is.
- Fig. 1 is a transformer arrangement with a cooling system shown as a railway transformer in less Construction height under the car floor of a multiple unit assemble.
- a cooling system shown as a railway transformer in less Construction height under the car floor of a multiple unit assemble.
- the one shown in Fig. 1 System consists of at least one in one housing or boiler 1 recorded, not shown in Fig. 1 Transformer, a circulation pump 2, one Cooler 3 with fan and corresponding connecting lines 4, which the warm cooling medium from the Route the boiler to the circulation pump 2 and the cooler and the cold cooling medium, i.e. Transformer oil again return to boiler 1.
- pressure gauges P and temperature measuring devices T provided and continue a flow meter Q can be used in the lines 4 his.
- the cooling system is monitored in the essentially by controlling the temperatures of the the transformers cooling liquid instead.
- a Inadmissible temperature signals the error for coil faults, for pump failure or underperformance, for cooler or duct contamination or on impermissible overload or driving operation.
- Figs. 2 and 3 is a coil of the transformer shown in longitudinal and cross section according to is based on the principle of a heat exchanger.
- the Coil 5 has an inner support tube 6 on which concentrically a high-voltage winding 7 as the primary winding is wound, for example for a High voltage of 25 kV is designed.
- the high voltage winding 7 consists of several layers, between which spacer strips 8 are attached. These spacer bars 8 extend over the entire length the high-voltage winding 7, being between inner Carrier tube 6 and the first layer preferably also Last 8 are arranged.
- the traction winding 9 On the high voltage winding 7 sits the traction winding 9 as a secondary winding, which also comprises several layers and for example for a low voltage of 2000 V is designed.
- a separation tube 10 is provided, that's the insulation between the two windings ensures. Also between the layers of the traction windings strips 8 are provided.
- the strips 8 define the size or the clear Width of cooling channels 11, the clear width less than 4 mm, preferably less than 3 mm can be.
- the high-voltage winding 7 and the traction winding 9 can also be produced separately from one another, whereupon they are inserted into each other.
- the windings are in an outer carrier tube 12 added, the inner support tube 6 and the outer carrier tube 12 on both sides over the windings 7, 9 protrude.
- the windings are of radial arranged pressure pieces 13 and one each the end of the carrier tubes 6, 12 closing annular Pressure flange 14 set. Between pressure flanges 14 and the winding ends is thus each one from space segments between the pressure pieces 7 formed distribution chamber 15, which at the same time as high-voltage security against ground and stray fields serves and prevents stray fields penetrate the yoke.
- the pressure pieces 13 have holes 16 on through the segments of the distribution chamber 15 are connected. Continue to point the pressure flanges 14 flow openings 17 for the Cooling medium.
- the carrier tubes 6, 12 and the separation tube 10 and the spacer strips 8 for the cooling channels 11 Made from glass fiber composites that their requirements for insulation strength and mechanical Meet strength.
- Figs. 2 and 3 coil is shown together with an identical coil on the two legs of a core put on and in the housing 1 or the boiler used, the core held together by clamping elements designed as press iron and is connected to the housing.
- the Press iron are designed as hollow profiles that Have flow openings, which in turn with the Flow openings 17 of the coils 5 in connection stand.
- the housing preferably also has hollow profiles on that for the supply and discharge of the cooling medium into the press iron and if necessary as side streams serve inside the case. Coils and core are attached in the housing, being in the housing still other components such as chokes or the like can be included.
- Fig. 4 is the flow diagram in the schematic Housing 1 shown, the one corresponding to FIG. 1 on the one hand with the cooler 3 and on the other hand with the circulation pump 2 is connected.
- 4 are two coils 5 on each leg 18 of the core arranged in parallel and via the return line 4 from Cooler 3 becomes cold oil corresponding to the housing 1 the arrow 19 fed.
- the oil gets into the hollow profile trained press iron, what by the reference numeral 20 is indicated, and flows through the flow openings 17 in the flanges 14 in the distribution chambers 15. From the distribution chambers 15, the oil in one essentially laminar flow through the cooling channels 11 of the coils 5 passed through what Arrows 21 is indicated. Due to the laminar flow there are hardly any pressure losses in the coil and the cold oil is targeted in the narrow cooling gaps passed through the hot coil, creating heat without the disadvantages of laminar flow are dissipated in a controlled manner becomes.
- the oil leaves the coils it can be brought out in a targeted manner or it can be used for cooling secondary Loss generators are used, such as recorded in another chamber in the housing can be what is indicated by the reference number 22 is indicated.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transformer Cooling (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
Description
Die Erfindung betrifft eine Transformatorenanordnung mit Kühlkreislauf, insbesondere zur Verwendung als Bahntransformatoranordnung nach dem Oberbegriff des Hauptanspruchs.The invention relates to a transformer arrangement with cooling circuit, especially for use as Railway transformer arrangement according to the preamble of Main claim.
Eine Transformatoranordnung gemäß dem
Oberbegriff des Anspruchs 1 ist aus FR-A-1 510 551
bekannt.A transformer arrangement according to the
The preamble of
Es sind Bahntransformatoren bekannt, die als Scheibenwickler ausgebildet sind, wobei die Primär- und Sekundärwicklungen als Scheiben ausgebildet sind, die axial nebeneinander auf dem Kern angeordnet sind. Derartige Transformatoren sind mit einer Kühlung versehen, bei der das Kühlmittel, hier Transformatorenöl über Düsen unter hohem Druck zwischen und auf die scheibenförmigen Wicklungen beströmt wird. Das Öl wird über eine Pumpe abgezogen, einem Kühler zugeführt und anschließend wieder zur Kühlung verwendet. Ein solcher bekannter Scheibenwickler mit Kühlung hat den Nachteil, daß sich das auf- bzw. zwischen die Wicklungen eingedüster kalte Öl sehr schnell mit dem im Transformator vorhandenen heißen Öl mischt, so daß eine große Menge Öl, z.B. 1000 l im Kreislauf geführt werden muß, wenn nur 400 l wirksam notwendig sind. Darüber hinaus treten bei einem Scheibenwickler große axiale Kurzschlußkräfte auf, denen mit entsprechenden Spannelementen Rechnung getragen werden muß.Railway transformers are known which act as disc winders are formed, the primary and Secondary windings are designed as disks are arranged axially side by side on the core. Such transformers are provided with cooling, where the coolant, here transformer oil over nozzles under high pressure between and on the disc-shaped windings is energized. The oil is drawn off via a pump and fed to a cooler and then used again for cooling. Such a known disc winder with cooling has the disadvantage that the on or between the Coils injected cold oil very quickly with that hot oil in the transformer mixes so that a large amount of oil, e.g. 1000 l circulated must be, if only 400 l are effectively necessary. In addition, large sizes occur in a disc winder axial short-circuit forces on those with corresponding Clamping elements must be taken into account.
Der Erfindung liegt die Aufgabe zugrunde, eine Transformatoranordnung zu schaffen, die geringe Abmessungen aufweist und ein effektives Kühlsystem zur Verfügung stellt.The invention has for its object a transformer arrangement to create the small dimensions and has an effective cooling system available provides.
Diese Aufgabe wird erfindungsgemäß durch die kennzeichnenden Merkmale des Hauptanspruchs in Verbindung mit den Merkmalen des Oberbegriffs gelöst.This object is achieved by the characterizing Features of the main claim related solved with the features of the generic term.
Durch die in den Unteransprüchen angegebenen Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen möglich.By the measures specified in the subclaims are advantageous further developments and improvements possible.
Dadurch, daß der Transformator als Lagenwickler ausgebildet ist, bei dem zwischen den Wicklungslagen Kühlkanäle vorgesehen sind, die gezielt und im wesentlichen laminar von dem Kühlmedium durchströmt werden, kann eine Transformatoranordnung mit äußerst geringer Bauhöhe zur Verfügung gestellt werden, der einen außerordentlich hohen Kühlwirkungsgrad aufweist. Dabei ist die Transformatorspule quasi in Form eines Wärmetauschers ausgebildet, dessen Kühlkanäle sehr dünn sein können, z.B. lichte Weiten von kleiner 3 mm aufweisen. Es wird dadurch eine geringe umlaufende Ölmenge verlangt, die Geschwindigkeit ist gering und gleichfalls sind die Druckabfälle gering.Because the transformer is designed as a layer winder is where between the winding layers Cooling channels are provided that are targeted and essentially laminar flows through the cooling medium can be a transformer arrangement with extreme low height are made available has an extraordinarily high cooling efficiency. The transformer coil is almost in shape a heat exchanger formed, the cooling channels can be very thin, e.g. clear spaces of smaller 3 mm. This makes it a low all-round The amount of oil required, the speed is slow and the pressure drops are also low.
Dadurch, daß die durch den Verlusterzeuger, d.h. die Transformatorspule aufgewärmte Ölmenge nach der Rückkühlung durch den Kühler direkt ohne Mischung mit dem im Gehäuse befindlichen Öl zur Kühlung der Spule wieder zugeführt wird, wird der Wirkungsgrad der kühlung erhöht. Der hierbei auftretende Vorteil liegt in der jeweiligen Differenz zur sich einstellenden Mischtemperatur aus rückgekühlter Flüssigkeit und der Flüssigkeit, die sich nach der im Kessel befindlichen Flüssigkeitsmenge und deren Möglichkeit zum Temperaturausgleich richtet. Ein Angleichen der Temperaturen mit der Kesselflüssigkeit kann nur im Bereich der kurzen Zulaufkanäle im Kessel stattfinden. Aufgrund der geringen umzuwälzenden Kühlmediummenge können die Aggregate, wie Umwälzpumpe und Kühler kleiner ausgebildet werden. Da die Druckabfälle bei der kontrollierten Führung des Kühlmediums durch die Kühlkanäle, bei der kaltes Öl gezielt in die heiße Spule eingebracht wird, gering sind, wird das Kühlmedium mit geringerem Druck z.B. Atmosphärendruck, in das Gehäuse eingebracht, wodurch dieses als Niederdruckkessel ausgebildet sein kann, was zur Folge hat, daß er leichter gebaut werden kann als es im Stand der Technik der Fall ist.The fact that the loss generator, i.e. the Transformer coil heated amount of oil after recooling through the cooler directly without mixing with the Oil in the housing to cool the coil again the cooling efficiency is increased. The the advantage that arises here lies in the respective Difference to the resulting mixing temperature recooled liquid and the liquid that according to the amount of liquid in the boiler and their possibility for temperature compensation directed. An adjustment of the temperatures with the boiler liquid can only in the area of the short inlet channels take place in the cauldron. Because of the low the aggregates, how circulation pump and cooler are made smaller. Because the pressure drops in the controlled management of the cooling medium through the cooling channels at which cold oil specifically introduced into the hot coil is, the cooling medium becomes less Pressure e.g. Atmospheric pressure, introduced into the housing, whereby this is designed as a low pressure boiler can be, which has the consequence that it is easier can be built as it is in the state of the art Case is.
Ein Ausführungsbeispiel der Erfindung ist in der
Zeichnung dargestellt und wird in der nachfolgenden
Beschreibung näher erläutert. Es zeigen
In Fig. 1 ist eine Transformatoranordnung mit Kühlsystem
dargestellt, der als Bahntransformator in geringer
Bauhöhe unter den Wagenboden eines Triebzuges zu
montieren ist. Dabei ist die verfügbare Einbauhöhe
beispielsweise 450 bis 550 mm. Das in Fig. 1 gezeigte
System besteht aus mindestens einem in einem Gehäuse
bzw. Kessel 1 aufgenommenen, in Fig. 1 nicht dargestellten
Transformator, einer Umwälzpumpe 2, einem
Kühler 3 mit Ventilator und entsprechenden Verbindungsleitungen
4, die das warme Kühlmedium aus dem
Kessel zur Umwälzpumpe 2 und zum Kühler leiten und
das kalte Kühlmedium, d.h. Transformatorenöl wieder
in den Kessel 1 zurückführen.In Fig. 1 is a transformer arrangement with a cooling system
shown as a railway transformer in less
Construction height under the car floor of a multiple unit
assemble. Here is the available installation height
for example 450 to 550 mm. The one shown in Fig. 1
System consists of at least one in one housing
or
Zur Überwachung des Kühlsystems sind Druckmeßgeräte P
und Temperaturmeßgeräte T vorgesehen und weiterhin
kann in die Leitungen 4 ein Durchflußmesser Q eingesetzt
sein. Die Überwachung des Kühlsystems findet im
wesentlichen durch die Kontrolle der Temperaturen der
die Transformatoren kühlenden Flüssigkeit statt. Eine
unzulässige Temperatur signalisiert dabei Fehler die
auf Spulenfehler, auf Pumpenausfall oder Minderleistung,
auf Kühler- oder Kanalverschmutzung oder auf
unzulässigem Überlast- oder Fahrbetrieb beruhen können.To monitor the cooling system, pressure gauges P
and temperature measuring devices T provided and continue
a flow meter Q can be used in the
In dem Kessel oder Gehäuse 1 sind zwei Transformatoren
parallel nebeneinander angeordnet, wobei die entsprechenden
Spulen auf zwei Schenkeln eines Kerns
sitzen.In the boiler or
In den Fign. 2 und 3 ist eine Spule des Transformators
im Längs- und Querschnitt dargestellt, die nach
dem Prinzip eines Wärmetauschers aufgebaut ist. Die
Spule 5 weist ein inneres Trägerrohr 6 auf, auf die
konzentrisch eine Oberspannungswicklung 7 als Primärwicklung
gewickelt ist, die beispielsweise für eine
Hochspannung von 25 kV ausgelegt ist. Die Oberspannungswicklung
7 besteht aus mehreren Lagen, zwischen
denen Distanzleisten 8 angebracht sind. Diese Distanzleisten
8 erstrecken sich über die gesamte Länge
der Oberspannungswicklung 7, wobei zwischen innerem
Trägerrohr 6 und erster Lage vorzugsweise gleichfalls
Leisten 8 angeordnet sind. Auf der Oberspannungswicklung
7 sitzt die Traktionswicklung 9 als Sekundärwicklung,
die gleichfalls mehrere Lagen umfaßt und
die beispielsweise für eine Niederspannung von 2000 V
ausgelegt ist. Zwischen Oberspannungswicklung 7 und
Traktionswicklung 9 ist ein Separationsrohr 10 vorgesehen,
das die Isolierung zwischen beiden Wicklungen
sicherstellt. Auch zwischen den Lagen der Traktionswicklungen
sind Leisten 8 vorgesehen.In Figs. 2 and 3 is a coil of the transformer
shown in longitudinal and cross section according to
is based on the principle of a heat exchanger. The
Die Leisten 8 definieren die Größe bzw. die lichte
Weite von Kühlkanälen 11, wobei die lichte Weite
kleiner als 4 mm vorzugsweise kleiner als 3 mm ausgebildet
sein kann.The
Die Oberspannungswicklung 7 und die Traktionswicklung
9 können auch getrennt voneinander hergestellt werden,
wobei sie anschließend ineinandergesteckt werden.The high-
Die Wicklungen sind in einem äußeren Trägerrohr 12
aufgenommen, wobei das innere Trägerrohr 6 und das
äußere Trägerrohr 12 beidseitig über die Wicklungen
7, 9 herausragen. Die Wicklungen werden von radial
angeordneten Druckstücken 13 und von jeweils einem
das Ende der Trägerrohre 6, 12 abschließenden ringförmigen
Druckflansch 14 festgelegt. Zwischen Druckflanschen
14 und den Wicklungsenden wird somit jeweils
eine aus Raumsegmenten zwischen den Druckstücken
7 gebildete Verteilerkammer 15 hergestellt, die
gleichzeitig als Hochspannungssicherheit gegen Masse
und Streufelder dient und vermeidet, daß Streufelder
in das Joch eindringen. Die Druckstücke 13 weisen Löcher
16 auf, durch die Segmente der Verteilerkammer
15 miteinander in Verbindung stehen. Weiterhin weisen
die Druckflansche 14 Durchströmöffnungen 17 für das
Kühlmedium auf.The windings are in an
Die Trägerrohre 6, 12 sowie das Separationsrohr 10
und die Distanzleisten 8 für die Kühlkanäle 11 sind
aus Glas-Faser-Verbundwerkstoffen hergestellt, die
ihren Anforderungen an Isolationsfestigkeit und mechanischer
Festigkeit gerecht werden.The
Die in den Fign. 2 und 3 dargestellte Spule wird zusammen
mit einer identisch aufgebauten Spule auf die
zwei Schenkel eines Kerns aufgesetzt und in das Gehäuse
1 bzw. den Kessel eingesetzt, wobei der Kern
über als Preßeisen ausgebildete Spannelemente zusammengehalten
und mit dem Gehäuse verbunden wird. Die
Preßeisen sind dabei als Hohlprofile ausgebildet, die
Durchströmöffnungen aufweisen, die wiederum mit den
Durchströmöffnungen 17 der Spulen 5 in Verbindung
stehen. Vorzugsweise weist auch das Gehäuse Hohlprofile
auf, die zur Zu- und Abführung des Kühlmediums
in die Preßeisen und gegebenenfalls als Nebenströme
in das Innere des Gehäuses dienen. Spulen und Kern
sind in dem Gehäuse befestigt, wobei in dem Gehäuse
noch weitere Bauelemente wie Drosseln oder dergleichen
aufgenommen sein können.The in Figs. 2 and 3 coil is shown together
with an identical coil on the
two legs of a core put on and in the
In Fig. 4 ist schematisch das Strömungsschema in dem
Gehäuse 1 dargestellt, das entsprechend Fig. 1 einerseits
mit dem Kühler 3 und andererseits mit der Umwälzpumpe
2 verbunden ist. Entsprechend Fig. 4 sind
zwei Spulen 5 auf jeweils einem Schenkel 18 des Kerns
parallel angeordnet und über die Rückleitung 4 vom
Kühler 3 wird kaltes Öl dem Gehäuse 1 entsprechend
dem Pfeil 19 zugeführt. Dabei ist der Druck, mit dem
das Öl zugeführt wird gering, er beträgt beispielsweise
0,15 bar. Das Öl gelangt in das als Hohlprofil
ausgebildete Preßeisen, was durch das Bezugszeichen
20 angedeutet ist, und strömt über die Durchströmöffnungen
17 in den Flanschen 14 in die Verteilerkammern
15. Von den Verteilerkammern 15 wird das Öl in einer
im wesentlichen laminaren Strömung durch die Kühlkanäle
11 der Spulen 5 hindurchgeleitet, was durch die
Pfeile 21 angedeutet wird. Durch die laminare Strömung
treten in der Spule kaum Druckverluste auf und
das kalte Öl wird gezielt in den schmalen Kühlspalten
durch die heiße Spule geführt, wodurch die Wärme ohne
die Nachteile der laminaren Strömung kontrolliert abgeführt
wird.In Fig. 4 is the flow diagram in the
Wenn das Öl die Spulen verläßt, kann es gezielt herausgeführt
werden oder es kann zur Kühlung von sekundären
Verlusterzeugern verwendet werden, wie sie beispielsweise
in einer weiteren Kammer im Gehäuse aufgenommen
sein können, was durch das Bezugszeichen 22
angedeutet wird. Das Öl verläßt das Gehäuse 1, das
noch weiteren Raum 23 für Durchführungen aufweisen
kann, und wird entsprechend dem Pfeil 23 über die Umwälzpumpe
2 erneut dem Kühler zugeführt.When the oil leaves the coils, it can be brought out in a targeted manner
or it can be used for cooling secondary
Loss generators are used, such as
recorded in another chamber in the housing
can be what is indicated by the
Bei einer 700 bis 800 mm langen Spule in entsprechender Anordnung nach Fig. 4 findet beispielsweise eine Durchströmung von 7 l pro Sekunde bei einer Geschwindigkeit von nur 50 cm pro Sekunde (= 145 KW) statt. Alle Armaturen bzw. Öffnungen sind über gleitende Dichtungen an das Kanalsystem des Gehäuses bzw. an den Flüssigkeitskreislauf angeschlossen. With a 700 to 800 mm long spool in a corresponding 4 finds, for example, a Flow of 7 l per second at a speed of only 50 cm per second (= 145 KW) instead. All fittings or openings are over sliding Seals to the duct system of the housing or the liquid circuit connected.
Falls es notwendig ist, kann Öl durch parasitäre Bohrungen zusätzlich durch den Kessel geleitet werden.If necessary, oil can penetrate through parasitic holes are also passed through the boiler.
Claims (6)
- Transformer arrangement with cooling circuit, in particular for use as railway transformer arrangement, comprising at least one transformer accommodated in a housing (1), a cooler (3) and a circulating pump (2), and the transformer comprises at least one coil (5) of at least one primary winding (7) and one secondary winding (9) which are arranged concentrically on a core, and a cooling medium circulates through the housing (1), the pump (23) and the cooler (3) in such a manner that the cooling medium is, after having been cooled by the cooler (3), fed to the coil (5) without being mixed with cooling medium in the housing, characterised in that the at least one coil (5) is designed as a layered winding arrangement with primary winding (7) and secondary winding (9) respectively wound concentrically in layers, and between the individual layers are provided coaxially arranged cooling channels (11) with a clearance of less than 4 mm in width through which the cooling medium is ducted in essentially laminary flow, and the coil (5) comprises an inner (6) and an outer support pipe (12) between which windings (7, 9) are accommodated and which are sealed by pressure flanges (14) whilst establishing an upstream distribution chamber (15) which is linked to the cooling channels.
- Transformer arrangement according to Claim 1, characterised in that spacers (8) for forming cooling channels (11) are provided between the layers.
- Transformer arrangement according to one of Claims 1 to 2, characterised in that the housing (1) and/or clamping elements for clamping the core (18) of the transformer include hollow profiles for ducting the cooling medium.
- Transformer arrangement according to one of Claims 1 to 3, characterised in that the at least one coil (5) comprises the inner support pipe (6), a thereonto placed primary winding including the cooling channels (11), a separation pipe (10), a thereonto placed secondary winding (9) including cooling channels, and the outer support pipe (12), and in the distribution chamber (15) at the respective upstream or downstream side of the cooling channels (11) are provided spaced pressure elements (13) with throughflow openings (16), and the distribution chambers (15) are sealed by pressure flanges (14) with throughflow openings (17).
- Transformer arrangement according to one of Claims 1 to 4, characterised in that the cooling channels have a clearance of less than 3 mm.
- Transformer arrangement according to one of Claims 1 to 5, characterised in that the housing 1 is designed as a low-pressure vessel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29924221U DE29924221U1 (en) | 1998-10-07 | 1999-09-30 | Transformer arrangement with cooling circuit |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19847267 | 1998-10-07 | ||
| DE19847267A DE19847267A1 (en) | 1998-10-07 | 1998-10-07 | Transformer arrangement with cooling circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0993007A1 EP0993007A1 (en) | 2000-04-12 |
| EP0993007B1 true EP0993007B1 (en) | 2003-06-04 |
Family
ID=7884385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99250348A Revoked EP0993007B1 (en) | 1998-10-07 | 1999-09-30 | Transformer device with cooling circuit |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0993007B1 (en) |
| AT (1) | ATE242539T1 (en) |
| DE (2) | DE19847267A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2406798B1 (en) | 2009-03-12 | 2015-09-16 | ABB Technology AG | An electric transformer with improved cooling system |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19961382A1 (en) | 1999-07-31 | 2001-02-01 | Alstom Anlagen Und Antriebssys | Electrical circuit, in particular for a medium-voltage converter |
| DE10058080A1 (en) * | 2000-11-23 | 2002-06-06 | Daimlerchrysler Rail Systems | Medium-frequency transformer |
| EP1226994B1 (en) | 2001-01-27 | 2007-06-13 | SMA Technologie AG | Medium frequency energy supply for rail vehicles |
| DE10117847C1 (en) | 2001-04-04 | 2003-02-06 | Siemens Ag | Forced liquid cooling transformer |
| EP1315180B1 (en) * | 2001-11-14 | 2004-03-03 | ABB Sécheron SA | Transformer and supply system for multisystem traction vehicles |
| DE102014220145A1 (en) * | 2014-10-06 | 2016-04-07 | Robert Bosch Gmbh | Cooling monitoring device for a transformer cooling a welding transformer |
| EP3881343A1 (en) * | 2018-11-12 | 2021-09-22 | Carrier Corporation | Cooled transformer for an energy storage device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3663910A (en) * | 1970-05-25 | 1972-05-16 | Allis Chalmers Mfg Co | Shunt reactor having improved insulating fluid circulating means |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE587820C (en) * | 1930-04-18 | 1934-01-27 | Koch & Sterzel Akt Ges | Layered high-voltage winding with axially controlled voltage distribution of the layer ends from the final to the initial potential, especially for transformers, measuring transducers or inductors |
| DE896089C (en) * | 1941-08-02 | 1953-11-09 | Aeg | Large transformer through whose winding OEl is sucked or -pressed |
| DE948718C (en) * | 1943-05-20 | 1956-09-06 | Aeg | Transformer with artificial oil circulation cooling |
| GB622907A (en) * | 1944-02-15 | 1949-05-10 | British Thomson Houston Co Ltd | Improvements in systems for circulating cooling fluid through electrical apparatus |
| US3371299A (en) * | 1966-02-10 | 1968-02-27 | Westinghouse Electric Corp | Transformer apparatus cooling system |
| DE2512714C2 (en) * | 1975-03-22 | 1984-05-24 | Ainslie Old Trafford Manchester Walthew | Ignition coil for an internal combustion engine |
-
1998
- 1998-10-07 DE DE19847267A patent/DE19847267A1/en not_active Withdrawn
-
1999
- 1999-09-30 DE DE59905812T patent/DE59905812D1/en not_active Revoked
- 1999-09-30 AT AT99250348T patent/ATE242539T1/en not_active IP Right Cessation
- 1999-09-30 EP EP99250348A patent/EP0993007B1/en not_active Revoked
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3663910A (en) * | 1970-05-25 | 1972-05-16 | Allis Chalmers Mfg Co | Shunt reactor having improved insulating fluid circulating means |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2406798B1 (en) | 2009-03-12 | 2015-09-16 | ABB Technology AG | An electric transformer with improved cooling system |
Also Published As
| Publication number | Publication date |
|---|---|
| DE59905812D1 (en) | 2003-07-10 |
| DE19847267A1 (en) | 2000-04-13 |
| EP0993007A1 (en) | 2000-04-12 |
| ATE242539T1 (en) | 2003-06-15 |
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