EP2255366A1 - Two- or multiphase transformer - Google Patents

Two- or multiphase transformer

Info

Publication number
EP2255366A1
EP2255366A1 EP09712840A EP09712840A EP2255366A1 EP 2255366 A1 EP2255366 A1 EP 2255366A1 EP 09712840 A EP09712840 A EP 09712840A EP 09712840 A EP09712840 A EP 09712840A EP 2255366 A1 EP2255366 A1 EP 2255366A1
Authority
EP
European Patent Office
Prior art keywords
support
coil
transformer according
support block
recess
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.)
Granted
Application number
EP09712840A
Other languages
German (de)
French (fr)
Other versions
EP2255366B1 (en
Inventor
Karl-Heinz Zillmann
Wolfgang Mönig
Benjamin Weber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ABB Technology AG
Original Assignee
ABB Technology AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ABB Technology AG filed Critical ABB Technology AG
Publication of EP2255366A1 publication Critical patent/EP2255366A1/en
Application granted granted Critical
Publication of EP2255366B1 publication Critical patent/EP2255366B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
    • H01F27/306—Fastening or mounting coils or windings on core, casing or other support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/20—Instruments transformers
    • H01F38/38—Instruments transformers for polyphase ac

Definitions

  • the invention relates to a two- or multi-phase transformer according to the preamble of claim 1.
  • the invention relates to dry type transformers or cast resin / Resibloc transformers with corresponding coil supports.
  • These coil supports are usually made of plastic, which are arranged below and / or above the coil. They have the main task of carrying the weight of the spool; In addition, measures must be taken to produce a Kriechwegverinrung, which is achieved by glued between items of Spulenabstützungen plates. In particular, when a long creepage distance is required, it may be necessary for a single coil support or coil support block to be glued together to obtain the creepage path extension from many individual parts.
  • the object of the invention is to provide a transformer in which the coil is supported by as few support blocks, the generation of a sufficiently long creepage path is simplified.
  • At least two support blocks for each coil can be placed on each bearing surface, which are fitted on the coil-side support surface with elastic compensation elements and at their perpendicular to the support surface extending longitudinal side surfaces have at least one creepage extending bar in the longitudinal direction and parallel to the support surface of the support block run.
  • a support block which can be produced, for example, in a so-called pultrusion process and in which due to the choice of shape a Kriechwegverinrung is provided from the outset on the longitudinal side surfaces of the support blocks.
  • At least one support block at its end faces have at least one in the direction of the support surface and parallel introduced slot, which also serves to extend the creepage distance or path or serve.
  • the at least one slot can be mounted outside the region of the strips.
  • At least one of the support blocks may be hollow. As a result, a reduction in the amount of required insulating material is achieved; the support block is thereby lighter and due to the inner cavity and stress cracks during curing are avoided.
  • the at least one hollow support block may have at least two, preferably three strips, corresponding to the required length of the creepage distance.
  • the strand produced in the pultrusion process is shortened, wherein the support block is simply cut to length at the desired length of a long profile.
  • the one support block on the contact plane a strip-like projection and the other have a recess adapted thereto, which extend in the longitudinal direction, which fits into the recess of the projection, so that both support blocks through the projection and the Deepening similar to the tongue and groove are guided against each other.
  • the height of the support blocks may be different; For example, a profile with a lower height can be used, whereby the height of the composite Abstützblöcke can be adapted to the needs.
  • a strip which may consist of elastic material, in particular of a silicone rubber.
  • FIG. 1 is a sectional view along section line l-l of Fig. 2,
  • FIG. 2 is a sectional view corresponding to section line INI of Fig. 1,
  • FIG. 3 is a sectional view similar to that of FIG. 1 with two support blocks
  • Fig. 4 shows another embodiment of a support block, in perspective view
  • FIG. 5 is a view of a support block for height adjustment, similar to FIG. 4. Reference is made to FIG. 1.
  • the support block 15 is shown in detail in FIG. 4.
  • the support block 15 has in cross section perpendicular to its longitudinal extent approximately a rectangular shape with a certain height H and a width B, of which the width B is smaller than the height H.
  • the support block 15 has an inner cavity 18, whereby a weight reduction and a material reduction is generated.
  • the bearing surfaces 19 and 20 are grooves 21 and 22, wherein in the representation shown in Fig. 4 in the groove 21, a centering profile 23 is inserted, which serves to produce an anti-rotation between two superposed support blocks 24 ⁇ and 24 2, see Fig. 3.
  • the supporting blocks 24 i and 24 2 of Fig. 3 differ from the supporting block 15 of FIG. 4 in that a cavity 18 is not present ,
  • side surfaces 25 and 26 are provided outwardly projecting and extending in the longitudinal direction of the support block 15 strips 27 and 28 which project outwardly from the side surfaces 25 and 26 in the opposite direction, creating a Creepage distance between the coil 17 and the double-T-beams 10, 11 is generated on both side surfaces.
  • the corresponding strips of Abstützblöcke 24i and 24 2 are not provided there with reference numerals.
  • Fig. 1 shows, in addition to the support block 15, two support blocks 16i and 16 2> which are shown in Fig. 5. They have a width B which corresponds to the width of the support blocks 15, and a height h, which is lower, in certain cases significantly less than the height H of the support blocks. With these support blocks 16i and I6 2 an adjustment of the support blocks to the distance or the distance of the coil from the support surface 14 of the carrier 10, 11 is adjusted.
  • the support blocks 16i, 16 2 which may be referred to as shims, have on the upper side (in the drawing) a projection 33 and on the lower side a longitudinally extending, parallel to the projection 33 extending recess 34 which corresponds to the recess 22 ; the projection 33 is dimensioned such that it can engage in the corresponding recess 22 of a further support block placed over the compensating piece 16, as shown in FIG.
  • a strip 35 of elastic material in the existing there groove or recess 21 is inserted, preferably a strip of a silicone rubber material, with the possible unevenness of the lower side of the coil 17 are compensated can.
  • the strip 35 can have the same dimensions as the centering profile 23.
  • Support block i Support block 2
  • Support block i Support block 2

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Polyoxymethylene Polymers And Polymers With Carbon-To-Carbon Bonds (AREA)
  • Insulating Of Coils (AREA)

Abstract

The invention relates to a two- or multiphase transformer having a yoke which has a crosspiece and at least two limbs, over which limbs a coil (17) is placed in each case, and having at least one carrier on which the crosspiece is fixed and which has bearing faces (14) for the coils. At least two supporting blocks (15, 16) for each coil are mounted on each bearing surface (14), said supporting blocks being fitted with elastic compensation elements (35) on the coil-side carrying face (19) and having, on their longitudinal side faces (25, 26) which run perpendicular to the carrying surface (19), at least one strip (27, 28) which extends the creepage path and runs in the longitudinal direction and parallel to the carrying face of the supporting block.

Description

Zwei- oder mehrphasiger Transformator Two- or multi-phase transformer
Beschreibungdescription
Die Erfindung betrifft einen zwei- oder mehrphasigen Transformator gemäß dem Oberbegriff des Anspruches 1.The invention relates to a two- or multi-phase transformer according to the preamble of claim 1.
Die Erfindung betrifft insbesondere Trockentransformatoren oder Gießharz/Resibloc- Transformatoren mit entsprechenden Spulenabstützungen. Diese Spulenabstützungen bestehen üblicherweise aus Kunststoff, die unterhalb und/oder auch oberhalb der Spule angeordnet sind. Sie haben in der Hauptsache die Aufgabe, das Gewicht der Spule zu tragen; darüber hinaus sind auch Maßnahmen zu treffen, um eine Kriechwegverlängerung zu erzeugen, was durch zwischen Einzelteile der Spulenabstützungen eingeklebte Platten erreicht wird. Insbesondere dann, wenn ein langer Kriechweg erforderlich ist, kann es notwendig sein, dass eine einzelne Spulenabstützung oder ein Spulenabstützblock zur Erzielung der Kriechwegverlängerung aus vielen Einzelteilen zusammengeklebt werden muss.In particular, the invention relates to dry type transformers or cast resin / Resibloc transformers with corresponding coil supports. These coil supports are usually made of plastic, which are arranged below and / or above the coil. They have the main task of carrying the weight of the spool; In addition, measures must be taken to produce a Kriechwegverlängerung, which is achieved by glued between items of Spulenabstützungen plates. In particular, when a long creepage distance is required, it may be necessary for a single coil support or coil support block to be glued together to obtain the creepage path extension from many individual parts.
Dies ist für die Herstellung von Transformatoren aus Kostengründen nachteilig.This is disadvantageous for the manufacture of transformers for cost reasons.
Aufgabe der Erfindung ist es, einen Transformator zu schaffen, bei dem die Spule durch möglichst wenige Abstützblöcke abgestützt wird, wobei die Erzeugung eines ausreichend langen Kriechweges vereinfacht ist.The object of the invention is to provide a transformer in which the coil is supported by as few support blocks, the generation of a sufficiently long creepage path is simplified.
Diese Aufgabe wird erfindungsgemäß gelöst durch die Merkmale des Anspruches 1. Erfindungsgemäß also können auf jeder Lagerfläche wenigstens zwei Abstützblöcke für jede Spule aufgesetzt werden, die auf der spulenseitigen Tragfläche mit elastischen Ausgleichselementen belegt sind und an ihren senkrecht zur Tragfläche verlaufenden Längsseitenflächen wenigstens eine den Kriechweg verlängernde Leiste aufweisen, die in Längsrichtung und parallel zur Tragfläche des Abstützblockes verlaufen.This object is achieved by the features of claim 1. Thus, according to the invention, at least two support blocks for each coil can be placed on each bearing surface, which are fitted on the coil-side support surface with elastic compensation elements and at their perpendicular to the support surface extending longitudinal side surfaces have at least one creepage extending bar in the longitudinal direction and parallel to the support surface of the support block run.
Damit wird ein Abstützblock vorgeschlagen, der zum Beispiel in einem sogenannten Pultrusionsverfahren hergestellt werden kann und bei dem aufgrund der Formwahl eine Kriechwegverlängerung an den Längsseitenflächen der Abstützblöcke von vorne herein vorgesehen ist.Thus, a support block is proposed, which can be produced, for example, in a so-called pultrusion process and in which due to the choice of shape a Kriechwegverlängerung is provided from the outset on the longitudinal side surfaces of the support blocks.
Gemäß einer weiteren Ausgestaltung der Erfindung kann wenigstens ein Abstützblock an seinen Stirnflächen wenigstens einen in Richtung der Tragfläche und parallel dazu eingebrachten Schlitz aufweisen, der beziehungsweise die ebenfalls zur Verlängerung der Kriechweg oder -strecke dient beziehungsweise dienen.According to a further embodiment of the invention, at least one support block at its end faces have at least one in the direction of the support surface and parallel introduced slot, which also serves to extend the creepage distance or path or serve.
In besonders vorteilhafter Weise kann der wenigstens eine Schlitz außerhalb des Bereiches der Leisten angebracht sein.In a particularly advantageous manner, the at least one slot can be mounted outside the region of the strips.
Gemäß einer weiteren Ausgestaltung der Erfindung kann wenigstens einer der Abstützblöcke hohl ausgebildet sein. Hierdurch wird eine Reduzierung der Menge des erforderlichen Isoliermaterials erreicht; der Abstützblock wird dadurch leichter und aufgrund des inneren Hohlraumes sind auch Spannungsrisse beim Aushärten vermieden.According to a further embodiment of the invention, at least one of the support blocks may be hollow. As a result, a reduction in the amount of required insulating material is achieved; the support block is thereby lighter and due to the inner cavity and stress cracks during curing are avoided.
Der wenigstens eine hohle Abstützblock kann wenigstens zwei, vorzugsweise drei Leisten aufweisen, entsprechend der erforderlichen Länge des Kriechweges.The at least one hollow support block may have at least two, preferably three strips, corresponding to the required length of the creepage distance.
Zur Herstellung eines Abstützblockes wird der im Pultrusionsverfahren hergestellte Strang gekürzt, wobei der Abstützblock an der gewünschten Länge einfach von einem langen Profil abgelängt wird. Bei Übereinanderstapeln mehrerer Abstützblöcke, insbesondere zweier Abstützblöcke, kann der eine Abstützblock an der Berührungsebene einen leistenartigen Vorsprung und der andere eine daran angepasste Vertiefung aufweisen, welche in Längsrichtung verlaufen, wobei in die Vertiefung der Vorsprung hineinpasst, so dass beide Abstützblöcke durch den Vorsprung und die Vertiefung ähnlich wie Nut und Feder gegeneinander geführt sind.To produce a support block, the strand produced in the pultrusion process is shortened, wherein the support block is simply cut to length at the desired length of a long profile. When stacking a plurality of support blocks, in particular two support blocks, the one support block on the contact plane a strip-like projection and the other have a recess adapted thereto, which extend in the longitudinal direction, which fits into the recess of the projection, so that both support blocks through the projection and the Deepening similar to the tongue and groove are guided against each other.
Die Höhe der Abstützblöcke kann unterschiedlich sein; beispielsweise kann ein Profil mit geringerer Höhe verwendet werden, wodurch die Höhe der zusammengesetzten Abstützblöcke an die Bedürfnisse angepasst werden kann. Zum Ausgleich von Unebenheiten der Spulen kann zwischen Spule und Abstützblock darüber hinaus auch ein Streifen integriert werden, der aus elastischem Material bestehen kann, insbesondere aus einem Silikongummi.The height of the support blocks may be different; For example, a profile with a lower height can be used, whereby the height of the composite Abstützblöcke can be adapted to the needs. To compensate for unevenness of the coils can also be integrated between the coil and support block beyond a strip, which may consist of elastic material, in particular of a silicone rubber.
Weitere vorteilhafte Ausgestaltungen und Verbesserungen sind den weiteren Unteransprüchen zu entnehmen.Further advantageous embodiments and improvements can be found in the further subclaims.
Anhand der Zeichnung, in der einige Ausführungsbeispiele der Erfindung dargestellt sind, sollen die Erfindung sowie weitere vorteilhafte Ausgestaltungen und Verbesserungen und weitere Vorteile näher erläutert und beschrieben werden.Reference to the drawing, in which some embodiments of the invention are shown, the invention and further advantageous refinements and improvements and other advantages will be explained and described in detail.
Es zeigen:Show it:
Fig. 1 eine Schnittansicht gemäß Schnittlinie l-l der Fig. 2,1 is a sectional view along section line l-l of Fig. 2,
Fig. 2 eine Schnittansicht entsprechend Schnittlinie INI der Fig. 1,2 is a sectional view corresponding to section line INI of Fig. 1,
Fig. 3 eine Schnittansicht ähnlich der der Fig. 1 mit zwei Abstützblöcken,3 is a sectional view similar to that of FIG. 1 with two support blocks,
Fig. 4 eine weitere Ausführungsform eines Abstützblockes, in perspektivischer Darstellung, undFig. 4 shows another embodiment of a support block, in perspective view, and
Fig. 5 eine Ansicht eines Abstützblockes zur Höhenanpassung, ähnlich der Fig. 4. Es sei Bezug genommen auf die Fig. 1.5 is a view of a support block for height adjustment, similar to FIG. 4. Reference is made to FIG. 1.
Auf einem Boden NN sind zwei Doppel-T-Träger 10 und 11 vorgesehen und aufgelagert, wobei auf den dem Boden entgegengesetzten Flächen 14 der oberen Querstege 12, 13 der Doppel-T-Träger 10, 11 unter Zwischenfügung von Abstützblöcken 15 und 16 eine Spule 17 aufgelagert ist.On a bottom NN two double-T-beams 10 and 11 are provided and supported, wherein on the bottom opposite surfaces 14 of the upper transverse webs 12, 13 of the double-T-beams 10, 11 with the interposition of support blocks 15 and 16 a coil 17 is stored.
Der Abstützblock 15 ist in der Fig. 4 näher dargestellt.The support block 15 is shown in detail in FIG. 4.
Der Abstützblock 15 besitzt im Querschnitt senkrecht zu seiner Längserstreckung etwa eine Rechteckform mit einer bestimmten Höhe H und einer Breite B, von denen die Breite B kleiner ist als die Höhe H. Der Abstützblock 15 besitzt einen inneren Hohlraum 18, wodurch eine Gewichtsreduzierung und eine Materialreduzierung erzeugt ist. Am Abstützblock 15 sind eine obere Auflagefläche 19 und eine untere Auflagefläche 20, deren Breite B beträgt, vorgesehen; die Länge des Abstützblockes 15 ist abhängig von der Größe der Spule 17. In den Auflageflächen 19 und 20 befinden sich Nuten 21 und 22, wobei in der in Fig. 4 gezeigten Darstellung in die Nut 21 ein Zentrierprofil 23 eingelegt ist, welches dazu dient, einen Verdrehschutz zwischen zwei übereinander angeordneten Abstützblöcken 24-\ beziehungsweise 242 zu erzeugen, siehe Fig. 3. Die Abstützblöcke 24i und 242 der Fig. 3 unterscheiden sich von dem Abstützblock 15 gemäß Fig. 4 darin, dass ein Hohlraum 18 nicht vorhanden ist.The support block 15 has in cross section perpendicular to its longitudinal extent approximately a rectangular shape with a certain height H and a width B, of which the width B is smaller than the height H. The support block 15 has an inner cavity 18, whereby a weight reduction and a material reduction is generated. On the support block 15, an upper support surface 19 and a lower support surface 20 whose width B is provided; the length of the support block 15 is dependent on the size of the coil 17. In the bearing surfaces 19 and 20 are grooves 21 and 22, wherein in the representation shown in Fig. 4 in the groove 21, a centering profile 23 is inserted, which serves to produce an anti-rotation between two superposed support blocks 24 \ and 24 2, see Fig. 3. the supporting blocks 24 i and 24 2 of Fig. 3 differ from the supporting block 15 of FIG. 4 in that a cavity 18 is not present ,
Auf den senkrecht zu den Auflage- oder Tragflächen 19 und 20 befindlichen Seitenflächen 25 und 26 sind nach außen vorspringende und in Längsrichtung des Abstützblockes 15 verlaufende Leisten 27 und 28 vorgesehen, welche nach außen von den Seitenflächen 25 und 26 in entgegengesetzte Richtung vorspringen, wodurch eine Kriechstreckenverlängerung zwischen der Spule 17 und den Doppel-T- Trägern 10, 11 auf beiden Seitenflächen erzeugt ist. Die entsprechenden Leisten der Abstützblöcke 24i und 242 sind dort nicht mit Bezugsziffern versehen.On the perpendicular to the support or support surfaces 19 and 20 located side surfaces 25 and 26 are provided outwardly projecting and extending in the longitudinal direction of the support block 15 strips 27 and 28 which project outwardly from the side surfaces 25 and 26 in the opposite direction, creating a Creepage distance between the coil 17 and the double-T-beams 10, 11 is generated on both side surfaces. The corresponding strips of Abstützblöcke 24i and 24 2 are not provided there with reference numerals.
Aus Fig. 2 ist ersichtlich, dass an den Stirnflächen 30 zumindest des Abstützblockes 15 Schlitze 31 und 32 vorgesehen sind, welche sich außerhalb des Bereiches der Leisten befinden und mit denen eine Kriechstreckenverlängerung im Bereich der Stirnfläche 30 erzeugt wird.From Fig. 2 it is seen that at the end faces 30 at least of the support block 15 slots 31 and 32 are provided, which are outside the range of Are strips and with which a creepage distance in the region of the end face 30 is generated.
Die Fig. 1 zeigt außer dem Abstützblock 15 zwei Abstützblöcke 16i und 162> die in Fig. 5 dargestellt sind. Sie besitzen eine Breite B, die der Breite der Abstützblöcke 15 entspricht, und eine Höhe h, die geringer, in bestimmten Fällen deutlich geringer ist als die Höhe H der Abstützblöcke. Mit diesen Abstützblöcken 16i und I62 wird eine Anpassung der Abstützblöcke an den Abstand beziehungsweise die Distanz der Spule von der Auflagefläche 14 der Träger 10, 11 eingestellt. Die Auflageblöcke 16i, 162, die als Ausgleichsstücke bezeichnet werden können, besitzen auf der oberen Seite (in der Zeichnung) einen Vorsprung 33 und auf der unteren Seite eine in Längsrichtung verlaufende, parallel zum Vorsprung 33 verlaufende Vertiefung 34, die der Vertiefung 22 entspricht; der Vorsprung 33 ist so bemessen, dass er in die entsprechende Vertiefung 22 eines über das Ausgleichsstück 16 aufgesetzten weiteren Abstützblock eingreifen kann, wie in Fig. 1 dargestellt.Fig. 1 shows, in addition to the support block 15, two support blocks 16i and 16 2> which are shown in Fig. 5. They have a width B which corresponds to the width of the support blocks 15, and a height h, which is lower, in certain cases significantly less than the height H of the support blocks. With these support blocks 16i and I6 2 an adjustment of the support blocks to the distance or the distance of the coil from the support surface 14 of the carrier 10, 11 is adjusted. The support blocks 16i, 16 2 , which may be referred to as shims, have on the upper side (in the drawing) a projection 33 and on the lower side a longitudinally extending, parallel to the projection 33 extending recess 34 which corresponds to the recess 22 ; the projection 33 is dimensioned such that it can engage in the corresponding recess 22 of a further support block placed over the compensating piece 16, as shown in FIG.
Zwischen dem Abstützblock 15 und der Spule 17 ist ein Streifen 35 aus elastischem Material in die dort vorhandene Nut oder Vertiefung 21 (siehe Fig. 4) eingelegt, vorzugsweise ein Streifen aus einem Silikongummimaterial, mit dem eventuelle Unebenheiten der unteren Seite der Spule 17 ausgeglichen werden können. Der Streifen 35 kann die gleichen Abmessungen haben wie das Zentrierprofil 23.Between the support block 15 and the coil 17, a strip 35 of elastic material in the existing there groove or recess 21 (see Fig. 4) is inserted, preferably a strip of a silicone rubber material, with the possible unevenness of the lower side of the coil 17 are compensated can. The strip 35 can have the same dimensions as the centering profile 23.
Selbstverständlich können entsprechende flache Ausgleichsmaterialien auch zwischen die einzelnen Abstützblöcke 15 beziehungsweise Ausgleichsstücke I61, I62 eingelegt werden. Die Zentrierprofile 23 können dabei in die Vertiefung 21 eingeklebt sein. Wie aus der Fig. 3 ersichtlich ist, können zwischen dem unteren Abstützblock 242 und der Auflagefläche 14 des Trägers 10 beziehungsweise 11 zwei Platten 37 eingelegt sein, die als Ausgleichsplatten dienen. Selbstverständlich können auch mehr als zwei Ausgleichsplatten oder lediglich nur eine vorgesehen sein. BezugszeichenlisteOf course, corresponding flat compensating materials can also be inserted between the individual support blocks 15 or compensating pieces 16 1 , 16 2 . The centering profiles 23 can be glued into the recess 21. As can be seen from Fig. 3, between the lower support block 24 2 and the support surface 14 of the carrier 10 and 11, two plates 37 may be inserted, which serve as balancing plates. Of course, more than two balancing plates or only one can be provided. LIST OF REFERENCE NUMBERS
Doppel-T-TrägerDouble-T-carrier
Doppel-T-TrägerDouble-T-carrier
Querstegcrosspiece
Querstegcrosspiece
Flächearea
Abstützblocksupport block
Abstützblock i Abstützblock 2 AbstützblockSupport block i Support block 2 Support block
SpuleKitchen sink
Hohlraum obere Auflagefläche untere AuflageflächeCavity upper support surface lower support surface
Nutgroove
Nutgroove
Zentrierprofil i Abstützblock 2 AbstützblockCentering profile i Support block 2 Support block
Seitenflächeside surface
Seitenflächeside surface
Leistestrip
Leistestrip
Stirnflächeface
Schlitzslot
Schlitzslot
Vorsprunghead Start
Vertiefungdeepening
Streifen strip

Claims

Patentansprüche claims
1. Zwei- oder mehrphasiger Transformator mit einem einen Steg und wenigstens zwei Schenkel aufweisenden Joch, über welche Schenkel je eine Spule (17) gesetzt ist, und mit wenigstens einem Träger, an dem der Steg fixiert ist und der Lagerflächen (14) für die Spulen aufweist, dadurch gekennzeichnet, dass auf jeder Lagerfläche (14) wenigstens zwei Abstützblöcke (15, 16) für jede Spule aufgesetzt sind, die auf der spulenseitigen Tragfläche (19) mit elastischen Ausgleichselementen (35) belegt sind und die an ihren senkrecht zur Tragfläche (19) verlaufenden Längsseitenflächen (25, 26) wenigstens eine den Kriechweg verlängernde Leiste (27, 28), die sich in Längsrichtung und parallel zur Tragfläche des Abstützblockes verlaufen, aufweist.1. Two- or multi-phase transformer with a web and at least two legs having yoke, via which leg each a coil (17) is set, and with at least one support on which the web is fixed and the bearing surfaces (14) for the Has coils, characterized in that on each bearing surface (14) at least two support blocks (15, 16) are placed for each coil, which are on the coil-side support surface (19) with elastic compensation elements (35) are occupied and at their perpendicular to the support surface (19) extending longitudinal side surfaces (25, 26) at least one creepage path extending bar (27, 28) extending in the longitudinal direction and parallel to the support surface of the support block has.
2. Transformator nach Anspruch 1 , dadurch gekennzeichnet, dass wenigstens ein Abstützblock (15, 16) an seinen Stirnflächen wenigstens einen in Richtung der Tragfläche und parallel dazu eingebrachten Schlitz (31 , 32) aufweist, die ebenfalls zur Erhöhung der Kriechstrecke dienen.2. Transformer according to claim 1, characterized in that at least one support block (15, 16) at its end faces at least one in the direction of the support surface and parallel introduced slot (31, 32), which also serve to increase the creepage distance.
3. Transformator nach Anspruch 2, dadurch gekennzeichnet, dass der wenigstens eine Schlitz (31 , 32) außerhalb des Bereiches der Leisten (27, 28) eingebracht ist.3. Transformer according to claim 2, characterized in that the at least one slot (31, 32) outside of the region of the strips (27, 28) is introduced.
4. Transformator nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass wenigstens ein Abstützblock (15, Fig. 4) hohl ist.4. Transformer according to one of the preceding claims, characterized in that at least one support block (15, Fig. 4) is hollow.
5. Transformator nach Anspruch 4, dadurch gekennzeichnet, dass der wenigstens eine hohle Abstützblock (15, Fig. 4) wenigstens zwei, vorzugsweise drei Leisten (27, 28) auf jeder Längsseitenfläche (25, 26) aufweist. 5. Transformer according to claim 4, characterized in that the at least one hollow support block (15, Fig. 4) at least two, preferably three strips (27, 28) on each longitudinal side surface (25, 26).
6. Transformator nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass bei Übereinanderstapeln zweier Abstützblöcke (15, 16) an der Berührungsebene der beiden der eine einen Vorsprung (33) und der andere eine daran angepasste Vertiefung (34) aufweist, die in Längsrichtung verlaufen, wobei der Vorsprung (33) in die Vertiefung (34) hineinpasst, so dass beide Abstützblöcke durch den Vorsprung und die Vertiefung ähnlich wie Nut und Feder gegeneinander geführt sind.6. Transformer according to one of the preceding claims, characterized in that when stacking two support blocks (15, 16) at the contact plane of the two of a projection (33) and the other has a recess adapted thereto (34) extending in the longitudinal direction , wherein the projection (33) fits into the recess (34), so that both support blocks are guided by the projection and the recess similar to each other like tongue and groove against each other.
7. Transformator nach Anspruch 6, dadurch gekennzeichnet, dass zur Herstellung der Nut und Feder an den Berührungsebenen zweier übereinander gesetzter Abstützblöcke jeweils eine Vertiefung (21 , 22) vorgesehen ist, in die ein Zwischenelement (23) eingesetzt, vorzugsweise eingeklebt ist.7. Transformer according to claim 6, characterized in that for the production of the tongue and groove on the contact planes of two superimposed support blocks each have a recess (21, 22) is provided in which an intermediate element (23) is inserted, preferably glued.
8. Transformator nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass zwischen der Spule und dem Abstützblock beziehungsweise den Abstützblöcken, auf der die Spulen unmittelbar aufstehen, zum Ausgleich von Unebenheiten der Spulen eine Zwischenschicht (35) aus einem gummielastischen Material vorgesehen ist, insbesondere eine Zwischenschicht aus einem Silikongummi.8. Transformer according to one of the preceding claims, characterized in that between the coil and the support block or the Abstützblöcken on which the coils stand up immediately, to compensate for unevenness of the coils, an intermediate layer (35) is provided from a rubber-elastic material, in particular a Intermediate layer of a silicone rubber.
9. Transformator nach Anspruch 8, dadurch gekennzeichnet, dass der Zwischenschicht (35) und deren Abmessungen etwa denen der Zwischenelemente (23) entspricht, so dass die Zwischenschicht (35) in eine Vertiefung (21) einlegbar ist. 9. Transformer according to claim 8, characterized in that the intermediate layer (35) and its dimensions approximately equal to those of the intermediate elements (23), so that the intermediate layer (35) in a recess (21) can be inserted.
EP09712840A 2008-02-22 2009-02-17 Two- or multiphase transformer Active EP2255366B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008010548A DE102008010548A1 (en) 2008-02-22 2008-02-22 Two- or multi-phase transformer
PCT/EP2009/001095 WO2009103481A1 (en) 2008-02-22 2009-02-17 Two- or multiphase transformer

Publications (2)

Publication Number Publication Date
EP2255366A1 true EP2255366A1 (en) 2010-12-01
EP2255366B1 EP2255366B1 (en) 2012-04-25

Family

ID=40756236

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09712840A Active EP2255366B1 (en) 2008-02-22 2009-02-17 Two- or multiphase transformer

Country Status (10)

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US (1) US8274354B2 (en)
EP (1) EP2255366B1 (en)
KR (1) KR101493406B1 (en)
CN (1) CN101952912B (en)
AT (1) ATE555487T1 (en)
BR (1) BRPI0907943B1 (en)
CA (1) CA2716147C (en)
DE (1) DE102008010548A1 (en)
ES (1) ES2384825T3 (en)
WO (1) WO2009103481A1 (en)

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EP3796346A1 (en) * 2019-09-23 2021-03-24 Siemens Energy Global GmbH & Co. KG Compensation block for air choke coils and transformers

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Also Published As

Publication number Publication date
KR20100116629A (en) 2010-11-01
BRPI0907943A2 (en) 2015-07-28
BRPI0907943B1 (en) 2023-10-10
WO2009103481A1 (en) 2009-08-27
EP2255366B1 (en) 2012-04-25
ATE555487T1 (en) 2012-05-15
CN101952912A (en) 2011-01-19
DE102008010548A1 (en) 2009-08-27
CN101952912B (en) 2013-03-06
US20110001600A1 (en) 2011-01-06
KR101493406B1 (en) 2015-02-13
BRPI0907943A8 (en) 2022-12-13
US8274354B2 (en) 2012-09-25
CA2716147A1 (en) 2009-08-27
CA2716147C (en) 2016-01-19
ES2384825T3 (en) 2012-07-12

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