EP0993007A1 - Transformer device with cooling circuit - Google Patents

Transformer device with cooling circuit Download PDF

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Publication number
EP0993007A1
EP0993007A1 EP99250348A EP99250348A EP0993007A1 EP 0993007 A1 EP0993007 A1 EP 0993007A1 EP 99250348 A EP99250348 A EP 99250348A EP 99250348 A EP99250348 A EP 99250348A EP 0993007 A1 EP0993007 A1 EP 0993007A1
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EP
European Patent Office
Prior art keywords
transformer
cooling channels
arrangement according
cooling
transformer arrangement
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EP99250348A
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German (de)
French (fr)
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EP0993007B1 (en
Inventor
Helmut Nieke
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Nieke Elektroapparate Berlin GmbH
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Nieke Elektroapparate Berlin GmbH
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Application filed by Nieke Elektroapparate Berlin GmbH filed Critical Nieke Elektroapparate Berlin GmbH
Priority to DE29924221U priority Critical patent/DE29924221U1/en
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    • 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.
  • 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 poses.
  • 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 provided, the 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 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 judges.
  • An adjustment of the temperatures with the boiler liquid can only in the area of the short inlet channels take place in the boiler. 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 makes it easier can be built as it is in the prior art Case is.
  • Fig. 1 is a transformer arrangement with a cooling system shown as a railway transformer in less Height under the 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 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 monitors P are used to monitor the cooling system 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 likewise 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 printing blocks 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 15 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 identically constructed 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 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 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.
  • 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

The apparatus includes at least one transformer housed in a case, a cooling device and a circulating pump. A coolant is circulated through the case, the pump and the cooling device. The transformer is arranged as a layer winding in which at least one primary winding (7) and at least one secondary winding (9) are arranged concentrically in layers wound around a core. Cooling channels (11) are coaxially arranged between the layers.

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.

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 poses.

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 Druckfälle 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 provided, the 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 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 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 judges. An adjustment of the temperatures with the boiler liquid can only in the area of the short inlet channels take place in the boiler. 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 makes it easier can be built as it is in the prior art Case is.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird in der nachfolgenden Beschreibung näher erläutert. Es zeigen

  • Fig. 1 die zu einem Kühlkreislauf miteinander verbundenen Bauelemente der erfindungsgemäßen Transformatoranordnung mit Kühlsystem,
  • Fig. 2 einen Längsschnitt durch einen Transformator,
  • Fig. 3 einen Querschnitt durch den erfindungsgemäßen Transformator und
  • Fig. 4 eine schematische Darstellung der im Gehäuse aufgenommenen Transformatoren mit Strömungsaufteilung.
    • An embodiment of the invention is shown in the drawing and is explained in more detail in the following description. Show it
  • 1 shows the components of the transformer arrangement according to the invention with a cooling system which are connected to one another to form a cooling circuit,
  • 2 shows a longitudinal section through a transformer,
  • Fig. 3 shows a cross section through the transformer according to the invention and
  • Fig. 4 is a schematic representation of the transformers accommodated in the housing with flow division.

    • 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 Height under the 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 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.

    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.Pressure monitors P are used to monitor the cooling system 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.

    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 housing 1 there are two transformers arranged in parallel next to each other, the corresponding Coils on two legs of a core sit.

    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 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 likewise Last 8 are arranged. 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. Between high voltage winding 7 and Traction winding 9, 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.

    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 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.

    Die Oberspannungswicklung 7 und die Traktionswicklung 9 können auch getrennt voneinander hergestellt werden, wobei sie anschließend ineinandergesteckt werden.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.

    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 Druckstüken 7 gebildete Verteilerkammer 15 hergestellt, die gleichzeitig als Hochspannungssicherheit gegen Masse und Streufelder dient und vermeidet, daß Streufelder in das Joch eindringen. Die Druckstücke 15 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 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 printing blocks 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 15 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.

    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 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.

    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 identically constructed 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 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.

    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. Fallls es jedoch gewünscht ist, kann die Strömung durch gezielte Maßnahmen turbulent geführt werden.In Fig. 4 is the flow diagram in the schematic Housing 1 shown, the one corresponding to Fig. 1 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. Here is the pressure with which the oil is supplied slightly, for example 0.15 bar. 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 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. If so desired, however the flow is turbulent through targeted measures become.

    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 reference number 22 is indicated. The oil leaves the housing 1, the have yet another room 23 for bushings can, and is according to arrow 23 on the circulation pump 2 fed to the cooler again.

    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 on the duct system of the housing or on 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 additionally passed through the boiler.

    Claims (8)

    Transformatoranordnung mit Kühlkreislauf, insbesondere zur Verwendung als Bahntransformatoranordnung, die mindestens einen in einem Gehäuse aufgenommenen Transformator, einen Kühler und eine Umwälzpumpe aufweist, wobei ein Kühlmedium durch das Gehäuse, die Pumpe und den Kühler zirkuliert,
    dadurch gekennzeichnet,
    daß der Transformator als Lagenwickleranordnung ausgebildet ist, bei dem mindestens eine Primärwicklung (7) und mindestens eine Sekundärwicklung (9) konzentrisch in Lagen gewickelt auf einem Kern angeordnet sind, wobei zwischen den einzelnen Lagen koaxial angeordnete Kühlkanäle (11) vorgesehen sind, durch die das Kühlmedium gezielt geführt wird.    Transformer arrangement with cooling circuit, in particular for use as a railway transformer arrangement, which has at least one transformer accommodated in a housing, a cooler and a circulating pump, a cooling medium circulating through the housing, the pump and the cooler,
    characterized,
    that the transformer is designed as a layer winding arrangement in which at least one primary winding (7) and at least one secondary winding (9) are arranged concentrically in layers on a core, with coaxially arranged cooling channels (11) being provided between the individual layers, through which the Coolant is guided specifically.         Transformatoranordnung nach Anspruch 1, dadurch gekennzeichnet, daß die Strömung des Kühlmediums durch die Kühlkanäle (11) im wesentlichen laminar ist.Transformer arrangement according to claim 1, characterized characterized in that the flow of the cooling medium through the cooling channels (11) essentially laminar is. Transformatoranordnung nach Anspruch 1 oder Anspruch 2, dadurch gekennzeichnet, daß zwischen den Lagen Distanzstücke (8) zur Bildung der Kühlkanäle (11) vorgesehen sind. Transformer arrangement according to claim 1 or claim 2, characterized in that between the layers spacers (8) to form the Cooling channels (11) are provided. Transformatoranordnung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Kühlkanäle (11) einströmseitig mit einer Verteilerkammer (15) in Verbindung stehen.Transformer arrangement according to one of the claims 1 to 3, characterized in that the cooling channels (11) on the inflow side with a distributor chamber (15) communicate. Transformatoranordnung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das Gehäuse (1) und/oder Spannelemente zum Verspannen des Kerns (18) des Transformators Hohlprofile zum Führen des Kühlmediums aufweisen.Transformer arrangement according to one of the claims 1 to 4, characterized in that the housing (1) and / or tensioning elements for tensioning the Core (18) of the transformer hollow profiles Guide the coolant. Transformatoranordnung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß der mindestens eine Transformator ein inneres Trägerrohr (6), die darauf angeordnete, die Kühlkanäle (11) aufweisende Primärwicklung (7), ein Separationsrohr (10), die darauf angeordnete, mit den Kühlkanälen versehene Sekundärwicklung (9) und ein äußeres Trägerrohr (12) aufweist, wobei in der jeweiligen Verteilerkammer (15) an der Ein und/oder Ausströmseite der Kühlkanäle (11) mit Abstand zueinander angeordnete Druckstücke (15) mit Durchströmöffnungen (16) vorgesehen sind und die Verteilerkammern (15) mit Druckflanschen (14) abgeschlossen sind, die Durchströmöffnungen (17) aufweisen.Transformer arrangement according to one of the claims 1 to 5, characterized in that the at least a transformer an inner support tube (6), the cooling channels (11) arranged thereon having primary winding (7), a separation tube (10), arranged on it, with the cooling channels provided secondary winding (9) and a has outer support tube (12), in which respective distribution chamber (15) on the and / or Outflow side of the cooling channels (11) with Spaced-apart thrust pieces (15) with flow openings (16) are provided and the distribution chambers (15) with pressure flanges (14) are completed, the flow openings (17). Transformatoranordnung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Kühlkanäle eine lichte Weite von kleiner 4 mm, vorzugsweise kleiner als 3 mm aufweisen.Transformer arrangement according to one of the claims 1 to 6, characterized in that the cooling channels a clear width of less than 4 mm, preferably have less than 3 mm. Transformnatoranordnung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß das Gehäuse 1 als Niederdruckkessel ausgebildet ist.Transformer arrangement according to one of the claims 1 to 7, characterized in that the housing 1 is designed as a low pressure boiler.
    EP99250348A 1998-10-07 1999-09-30 Transformer device with cooling circuit Revoked EP0993007B1 (en)

    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
    DE19847267A DE19847267A1 (en) 1998-10-07 1998-10-07 Transformer arrangement with cooling circuit
    DE19847267 1998-10-07

    Publications (2)

    Publication Number Publication Date
    EP0993007A1 true EP0993007A1 (en) 2000-04-12
    EP0993007B1 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 (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    WO2002082478A1 (en) * 2001-04-04 2002-10-17 Siemens Aktiengesellschaft Transformer with a forced liquid cooling system
    EP1315180A1 (en) * 2001-11-14 2003-05-28 ABB Sécheron SA Transformer and supply system for multisystem traction vehicles
    WO2020101905A1 (en) * 2018-11-12 2020-05-22 Carrier Corporation Cooled transformer for an energy storage device

    Families Citing this family (5)

    * Cited by examiner, † Cited by third party
    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
    ATE364525T1 (en) 2001-01-27 2007-07-15 Sma Technologie Ag MEDIUM FREQUENCY ENERGY SUPPLY FOR A RAIL VEHICLE
    CN102349121B (en) 2009-03-12 2015-12-09 Abb技术有限公司 There is the power transformer of the cooling system of improvement
    DE102014220145A1 (en) * 2014-10-06 2016-04-07 Robert Bosch Gmbh Cooling monitoring device for a transformer cooling a welding transformer

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    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
    GB622907A (en) * 1944-02-15 1949-05-10 British Thomson Houston Co Ltd Improvements in systems for circulating cooling fluid through electrical apparatus
    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
    FR1510551A (en) * 1966-02-10 1968-01-19 Westinghouse Electric Corp Further training for processors
    US3663910A (en) * 1970-05-25 1972-05-16 Allis Chalmers Mfg Co Shunt reactor having improved insulating fluid circulating means
    DE2512714A1 (en) * 1975-03-22 1976-09-30 Ainslie Walthew IC engine ignition coil - has ferrite core inside ring of soft iron rods inside plastics bobbin

    Patent Citations (7)

    * Cited by examiner, † Cited by third party
    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
    FR1510551A (en) * 1966-02-10 1968-01-19 Westinghouse Electric Corp Further training for processors
    US3663910A (en) * 1970-05-25 1972-05-16 Allis Chalmers Mfg Co Shunt reactor having improved insulating fluid circulating means
    DE2512714A1 (en) * 1975-03-22 1976-09-30 Ainslie Walthew IC engine ignition coil - has ferrite core inside ring of soft iron rods inside plastics bobbin

    Cited By (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    WO2002082478A1 (en) * 2001-04-04 2002-10-17 Siemens Aktiengesellschaft Transformer with a forced liquid cooling system
    US6838968B2 (en) 2001-04-04 2005-01-04 Siemens Aktiengesellschaft Transformer with forced liquid coolant
    EP1315180A1 (en) * 2001-11-14 2003-05-28 ABB Sécheron SA Transformer and supply system for multisystem traction vehicles
    WO2020101905A1 (en) * 2018-11-12 2020-05-22 Carrier Corporation Cooled transformer for an energy storage device

    Also Published As

    Publication number Publication date
    ATE242539T1 (en) 2003-06-15
    DE19847267A1 (en) 2000-04-13
    EP0993007B1 (en) 2003-06-04
    DE59905812D1 (en) 2003-07-10

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