EP1901318A2 - Screwless core assembly device - Google Patents

Screwless core assembly device Download PDF

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Publication number
EP1901318A2
EP1901318A2 EP07013088A EP07013088A EP1901318A2 EP 1901318 A2 EP1901318 A2 EP 1901318A2 EP 07013088 A EP07013088 A EP 07013088A EP 07013088 A EP07013088 A EP 07013088A EP 1901318 A2 EP1901318 A2 EP 1901318A2
Authority
EP
European Patent Office
Prior art keywords
mounting device
core element
webs
holes
mold
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP07013088A
Other languages
German (de)
French (fr)
Other versions
EP1901318A3 (en
Inventor
Frank Clasen
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.)
Block Transformatoren Elektronik GmbH
Original Assignee
Block Transformatoren Elektronik GmbH
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 Block Transformatoren Elektronik GmbH filed Critical Block Transformatoren Elektronik GmbH
Publication of EP1901318A2 publication Critical patent/EP1901318A2/en
Publication of EP1901318A3 publication Critical patent/EP1901318A3/en
Withdrawn legal-status Critical Current

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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
    • H01F27/02—Casings
    • H01F27/04—Leading of conductors or axles through casings, e.g. for tap-changing arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F30/00—Fixed transformers not covered by group H01F19/00
    • H01F30/06—Fixed transformers not covered by group H01F19/00 characterised by the structure

Definitions

  • the present invention relates to a mounting device for a coil device having a magnetically conductive core element, in particular for a transformer or a choke, for clamping the core element to the coil device. Furthermore, the invention relates to a coil device, in particular a transformer or a throttle.
  • Known mounting devices with which connecting elements, so in particular terminals for connecting external supply lines to the coil windings of the coil device can be attached to the coil device are usually formed as a single metal rails and are by means of screws and nuts on the core element, ie for example in a Transformer to the transformer core, mounted.
  • the core element has for this purpose through holes, through which the screws are completely passed and attached at the other end by means of nuts to the core element.
  • the screws also serve to clamp the core element, which is usually constructed from individual sheets.
  • the screws Due to the position of the screws in the core element, a current can flow in the screws during operation of the coil device, which leads to additional heat losses. To prevent this, the screws are usually costly electrically isolated from the core element by the screws and / or the holes by additional measures (eg insertion of an insulating sleeve into the hole, using special, electrically non-conductive screws, ...) are electrically isolated ,
  • the invention has for its object to provide a mounting device for a magnetically conductive core element having coil device for clamping the core element, with which the occurring in the known mounting device problem of additional heat losses is eliminated.
  • a mounting device specified in claim 1 which is characterized in that the mounting device has two moldings to be attached to opposite sides of the core element and that the mold parts each have at least one web for introduction into corresponding, mounted in the core element holes, wherein the webs are configured and arranged so that when mounted on the coil assembly device webs of different moldings do not touch.
  • the invention is based on the knowledge to forego the occurring for the known mounting device additional heat losses causal, guided by holes in the core element screws and to solve the attachment of the mounting device to the coil device completely different.
  • two molded parts are used, which are designed so that they can be attached to opposite sides of the core element and preferably enclose the core element from the outside.
  • These moldings have webs which protrude into the bores of the core element, wherein the webs are configured and arranged such that in the assembled state webs of different shaped parts, ie in particular from opposite sides into the bore projecting webs, do not touch.
  • the mounting device according to the invention is nevertheless simple in design, can be easily and inexpensively manufactured and easily mounted on the coil device.
  • the mold parts are designed so that they each enclose about half of the core element and that they have at the points of contact fastening means for mutual connection and attachment, in particular holes for receiving mounting screws.
  • the two mold parts are screwed together at the contact points by means of mounting screws, wherein the core element is pressed. Furthermore, thereby slipping of the mounting device can be prevented on the core element.
  • the mounting device is further preferably designed such that crane eyelets are arranged at the contact points of the mold elements for transporting the coil device.
  • the mounting device according to the invention can also be used for the purpose of transporting the coil device, which can weigh several kilograms in larger dimensions, by means of crane eyes, as in particular by the projecting into the holes webs and the core element firmly enclosing moldings Supporting forces absorbed and slipping relative to the coil device can be prevented.
  • the webs are attached to the first mold element at other locations than the webs on the second mold element.
  • the webs can also be made longer, so that they protrude almost completely through the respective corresponding bore, Of course, the webs are not so long that they touch the opposite molding.
  • the webs can also accommodate correspondingly larger load capacities.
  • the length of the webs is less than half the thickness of the core element in the direction of the holes in the core element.
  • a web can basically protrude into each bore from each side, without the webs touching each other.
  • the lengths of the webs can also be designed differently and / or differently, as long as it is ensured that the protruding from different directions in the same bore webs do not touch.
  • At least one mold element has a ground connection, so that no longer, as in the known mounting device, an additional ground terminal must be mounted on the metal rail.
  • At least one molded part has connecting elements for the fixed, detachable attachment of connecting elements, in particular connecting terminals.
  • the molding performs a dual purpose.
  • connection elements are designed as holes for latching terminals, so that the connection elements can be mounted against slipping on the molded part with the connection elements.
  • connection elements are designed such that the connecting elements in the assembled state can not be moved laterally, which is still possible in the known mounting device and which often leads to tearing off of connections to the connecting elements.
  • the connecting elements are often laboriously fixed in the known mounting device, for example, by mechanical deformation of the metal rail or by using adhesive material. All this is eliminated in this development of the mounting device according to the invention.
  • the invention also relates to a coil device, in particular a transformer and a choke, with a magnetically conductive core element, at least one coil winding and a mounting device of the type described above according to the invention.
  • FIGs 1A and 1B a known mounting device in the assembled state or in exploded view is shown.
  • the core element 1 here a transformer core
  • the mounting device is mounted.
  • three through holes 3 are passed through the yoke 2
  • This can basically lead to heat losses, since during operation by the screws basically a current can flow. Therefore, it is basically necessary to electrically insulate the screws 10 from the core element 1, for example by using special, electrically insulated screws, which causes additional expense, in particular additional costs. Despite this, heat losses can occur even if not performed properly.
  • the metal rail 11 often has a height of 10 mm or a groove of 10 mm from the edge of the yoke 2 of the core element 1. These 10mm thus correspond exactly to the required locking dimension standardized fasteners, here for example transformer terminals 13 for connecting external (not shown) connecting lines with the coil windings (not shown).
  • transformer terminals 13 for connecting external (not shown) connecting lines with the coil windings (not shown).
  • the terminals 13 can move laterally, causing the terminals attached to the terminals tear off and it can come to failures.
  • the terminals 13 are often laboriously fixed, for example by mechanical deformation of the rail 11 or by the use of adhesives.
  • an additional ground terminal 14 must be separately mounted on the rail 11 for connection of a grounding line. Furthermore, the wound on the legs of the transformer core 1 coils 4 are also recognizable.
  • FIGS. 2A and 2B show a mounting device according to the invention in the mounted state or in an exploded view. Recognizable in turn of the coil device of the transformer core 1, in whose upper yoke 2, three through holes 3 are located. Here too, the coils 4 wound up on the legs of the transformer core 1 are already recognizable.
  • the mounting device essentially comprises two mold parts 20, 21, which are designed such that they enclose the upper side of the yoke 2 of the transformer core 1.
  • Both mold parts 20, 21 have in the embodiment shown a number of holes 3 corresponding number of webs 22.
  • These webs 22 are formed and attached at such locations on the mold parts 20, 21 that they protrude when mounting the mold parts 20, 21 on the transformer core 1 in the holes 3.
  • the length of the webs 22 is selected so that the webs of the molded part 20 and the webs of the molded part 21 do not touch in the assembled state, whereby current flow through the webs during operation of the coil device is prevented.
  • An elaborate insulation, as required for the screws 10 in the known mounting device, can in the mounting device according to the invention between the webs 22 and the holes 3 and the transformer core 1 omitted.
  • the mold parts 20, 21 are further designed so that they touch at their ends 23, 24 and are mounted together there by means of two simple mounting screws 25, which may be uninsulated. As a result, a certain jamming of the moldings is achieved with the transformer core 1 in order to prevent slippage of the mounting device relative to the transformer core as possible.
  • the molded part 21 is formed on its side facing away from the transformer core 1 side length as lying parallel to the top of the yoke 2 rail 26 with holes 27 at the front folded edge.
  • This rail 26 with the holes 27 serves as a connection element for the fixed, releasable attachment of the terminals 13, which can be locked in this embodiment slip-proof. Additional measures to prevent slippage of the terminals, as required in the known mounting device is no longer necessary in this embodiment.
  • a grounding connection 28 for the coil device is already integrated in the molded part 21.
  • By additionally introduced holes 29 in the molding 21 also more attachments can also be easily mounted.
  • holes 30 are incorporated in the illustrated embodiment at the ends 23, 24 of the mold parts 20, 21. These can be used as crane eyelets, i.a. for transporting the coil device serve. The projecting into the holes 3 webs 22 take on a large part of the load-bearing forces.
  • the mounting device according to the invention can also be produced easily and inexpensively, is easy to assemble and offers more advantages.
  • the connecting elements, in particular terminals are mounted easily and securely against slipping, the mounting device can also be used to transport the coil device, and it can be easily mounted more components.
  • the connecting webs can also be configured differently in terms of their shape, number and arrangement, it being ensured in all embodiments that webs do not touch within the holes in the core element.
  • the invention is not limited to application to a transformer, but can basically be applied to all coil devices which have a magnetically conductive core and in which the problem of heat loss due to core-passing mounting members may occur.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Housings And Mounting Of Transformers (AREA)

Abstract

The device has two formed parts (20, 21) that are attached at two oppositely lying sides of a core unit (1), where the formed parts comprise bars (22) for insertion into corresponding through holes (3) in the core unit. The bars are designed and arranged in such a manner that the bars do not contact the formed parts when the mounting device is attached at a coil device. Lifting brackets are arranged at contact points of the formed part for transporting the coil device, where the formed parts comprise an earth connection.

Description

Die vorliegende Erfindung betrifft eine Montagevorrichtung für eine ein magnetisch leitendes Kernelement aufweisende Spulenvorrichtung, insbesondere für einen Transformator oder eine Drossel, zur Verspannung des Kernelements an der Spulenvorrichtung. Ferner betrifft die Erfindung eine Spulenvorrichtung, insbesondere einen Transformator oder eine Drossel.The present invention relates to a mounting device for a coil device having a magnetically conductive core element, in particular for a transformer or a choke, for clamping the core element to the coil device. Furthermore, the invention relates to a coil device, in particular a transformer or a throttle.

Bekannte Montagevorrichtungen, mit denen Verbindungselemente, also insbesondere Anschlussklemmen zur Verbindung von externen Zuführungsleitungen mit den Spulenwindungen der Spulenvorrichtung, an der Spulenvorrichtung angebracht werden können, sind meist als einzelne Metallschienen ausgebildet und werden mit Hilfe von Schrauben und Muttern an dem Kernelement, also beispielsweise bei einem Transformator an dem Transformatorkern, montiert. Das Kernelement weist dazu durchgängige Bohrungen auf, durch die die Schrauben vollständig hindurchgeführt und am anderen Ende mittels Muttern an dem Kernelement befestigt werden. Die Schrauben dienen auch zum Verspannen des meist aus einzelnen Blechen aufgebauten Kernelements.Known mounting devices with which connecting elements, so in particular terminals for connecting external supply lines to the coil windings of the coil device can be attached to the coil device, are usually formed as a single metal rails and are by means of screws and nuts on the core element, ie for example in a Transformer to the transformer core, mounted. The core element has for this purpose through holes, through which the screws are completely passed and attached at the other end by means of nuts to the core element. The screws also serve to clamp the core element, which is usually constructed from individual sheets.

Bedingt durch die Lage der Schrauben im Kernelement kann in den Schrauben während des Betriebes der Spulenvorrichtung ein Strom fließen, was zu zusätzlichen Wärmeverlusten führt. Um dies zu verhindern, sind die Schrauben meist aufwendig vom Kernelement elektrisch isoliert, indem die Schrauben und/oder die Bohrungen durch zusätzliche Maßnahmen (z.B. Einführung einer Isolierhülse in die Bohrung, Verwendung spezieller, elektrisch nicht leitender Schrauben, ...) elektrisch isoliert werden.Due to the position of the screws in the core element, a current can flow in the screws during operation of the coil device, which leads to additional heat losses. To prevent this, the screws are usually costly electrically isolated from the core element by the screws and / or the holes by additional measures (eg insertion of an insulating sleeve into the hole, using special, electrically non-conductive screws, ...) are electrically isolated ,

Der Erfindung liegt die Aufgabe zugrunde, eine Montagevorrichtung für eine ein magnetisch leitendes Kernelement aufweisende Spulenvorrichtung zur Verspannung des Kernelements anzugeben, mit der das bei der bekannten Montagevorrichtung auftretende Problem der zusätzlichen Wärmeverluste beseitigt wird.The invention has for its object to provide a mounting device for a magnetically conductive core element having coil device for clamping the core element, with which the occurring in the known mounting device problem of additional heat losses is eliminated.

Die Aufgabe wird gelöst durch eine in Anspruch 1 angegebene Montagevorrichtung, die dadurch gekennzeichnet ist, dass die Montagevorrichtung zwei an gegenüber liegenden Seiten des Kernelements anzubringende Formteile aufweist und dass die Formteile jeweils mindestens einen Steg aufweisen zur Einbringung in korrespondierende, in dem Kernelement angebrachte Bohrungen, wobei die Stege so ausgestaltet und angeordnet sind, dass sich bei an der Spulenvorrichtung angebrachter Montagevorrichtung Stege unterschiedlicher Formteile nicht berühren.The object is achieved by a mounting device specified in claim 1, which is characterized in that the mounting device has two moldings to be attached to opposite sides of the core element and that the mold parts each have at least one web for introduction into corresponding, mounted in the core element holes, wherein the webs are configured and arranged so that when mounted on the coil assembly device webs of different moldings do not touch.

Der Erfindung liegt die Erkenntnis zugrunde, auf die für die bei der bekannten Montagevorrichtung auftretenden zusätzlichen Wärmeverluste ursächlichen, durch Bohrungen in dem Kernelement geführten Schrauben zu verzichten und die Anbringung der Montagevorrichtung an der Spulenvorrichtung völlig anders zu lösen. So werden insbesondere statt einer einzigen Metallschiene, die mittels der Schrauben an dem Kernelement festgeschraubt wird, zwei Formteile verwendet, die so ausgestaltet sind, dass sie an gegenüberliegenden Seiten des Kernelements angebracht werden können und bevorzugt das Kernelement von außen umschließen. Diese Formteile weisen Stege auf, die in die Bohrungen des Kernelements hineinragen, wobei die Stege so ausgestaltet und angeordnet sind, dass sich in montiertem Zustand Stege unterschiedlicher Formteile, also insbesondere von gegenüberliegenden Seiten in die Bohrung hineinragende Stege, nicht berühren. Dadurch können während des Betriebs der Spulenvorrichtung auch keine Ströme quer durch die Stege mehr fließen, so dass die bei der bekannten Montagevorrichtung auftretenden Wärmeverluste vermieden werden. Montageschrauben, die durch die Bohrungen geführt werden müssten, entfallen somit völlig.The invention is based on the knowledge to forego the occurring for the known mounting device additional heat losses causal, guided by holes in the core element screws and to solve the attachment of the mounting device to the coil device completely different. Thus, in particular instead of a single metal rail, which is screwed by means of the screws to the core element, two molded parts are used, which are designed so that they can be attached to opposite sides of the core element and preferably enclose the core element from the outside. These moldings have webs which protrude into the bores of the core element, wherein the webs are configured and arranged such that in the assembled state webs of different shaped parts, ie in particular from opposite sides into the bore projecting webs, do not touch. As a result, during operation of the coil device, currents can no longer flow transversely through the webs, so that the heat losses occurring in the known mounting device are avoided. Mounting screws, which would have to be passed through the holes, thus eliminated completely.

Die erfindungsgemäße Montagevorrichtung ist gleichwohl einfach ausgestaltet, lässt sich auf einfache Weise und kostengünstig herstellen und leicht an der Spulenvorrichtung montieren. Beispielsweise sind die Formteile so ausgestaltet, dass sie jeweils in etwa die Hälfte des Kernelements umschließen und dass sie an den Berührungsstellen Befestigungsmittel zur gegenseitigen Verbindung und Befestigung aufweisen, insbesondere Löcher zur Aufnahme von Montageschrauben. Bevorzugt werden also die beiden Formteile an den Berührungsstellen mittels Montageschrauben miteinander verschraubt, wobei das Kernelement verpresst wird. Des weiteren kann dadurch auch ein Verrutschen der Montagevorrichtung auf dem Kernelement verhindert werden.The mounting device according to the invention is nevertheless simple in design, can be easily and inexpensively manufactured and easily mounted on the coil device. For example, the mold parts are designed so that they each enclose about half of the core element and that they have at the points of contact fastening means for mutual connection and attachment, in particular holes for receiving mounting screws. Preferably, therefore, the two mold parts are screwed together at the contact points by means of mounting screws, wherein the core element is pressed. Furthermore, thereby slipping of the mounting device can be prevented on the core element.

Die Montagevorrichtung ist weiter bevorzugt so ausgestaltet, dass an den Berührungsstellen der Formelemente Kranösen angeordnet sind zum Transport der Spulenvorrichtung. Anders als die bekannte Montagevorrichtung kann die erfindungsgemäße Montagevorrichtung auch zum Zwecke des Transports der Spulenvorrichtung, die bei größeren Dimensionen auch mehrere Kilogramm wiegen kann, mittels der Kranösen verwendet werden, da insbesondere durch die in die Bohrungen hineinragenden Stege und die das Kernelement fest umschließenden Formteile entsprechende Tragkräfte aufgenommen und ein Verrutschen gegenüber der Spulenvorrichtung verhindert werden.The mounting device is further preferably designed such that crane eyelets are arranged at the contact points of the mold elements for transporting the coil device. Unlike the known mounting device, the mounting device according to the invention can also be used for the purpose of transporting the coil device, which can weigh several kilograms in larger dimensions, by means of crane eyes, as in particular by the projecting into the holes webs and the core element firmly enclosing moldings Supporting forces absorbed and slipping relative to the coil device can be prevented.

In einer bevorzugten Weiterbildung sind die Stege an dem ersten Formelement an anderen Stellen angebracht als die Stege an dem zweiten Formelement. So kann beispielsweise vorgesehen sein, dass an dem ersten Formelement nur Stege zum Hineinragen in die Bohrungen 1, 3, 5 usw. vorgesehen sind, während an dem zweiten Formelement nur Stege für die Bohrungen 2, 4, 6 usw. vorgesehen sind. Dadurch können die Stege auch länger ausgebildet sein, so dass sie fast durch die jeweils korrespondierende Bohrung vollständig hindurchragen, wobei die Stege natürlich nicht so lang sind, dass sie das gegenüberliegende Formteil berühren. Bei dieser Ausgestaltung können die Stege auch entsprechend größere Tragkräfte aufnehmen.In a preferred embodiment, the webs are attached to the first mold element at other locations than the webs on the second mold element. For example, it may be provided that only webs for projecting into the bores 1, 3, 5, etc. are provided on the first mold element, while only webs for the bores 2, 4, 6, etc. are provided on the second mold element. As a result, the webs can also be made longer, so that they protrude almost completely through the respective corresponding bore, Of course, the webs are not so long that they touch the opposite molding. In this embodiment, the webs can also accommodate correspondingly larger load capacities.

In einer anderen Weiterbildung ist vorgesehen, dass die Länge der Stege geringer ist als die Hälfte der Dicke des Kernelements in Richtung der Bohrungen in dem Kernelement. Dadurch kann grundsätzlich in jede Bohrung von jeder Seite ein Steg hineinragen, ohne dass sich die Stege berühren. Natürlich können die Längen der Stege auch anders und/oder unterschiedlich ausgestaltet sein, solange sichergestellt ist, dass sich die aus unterschiedlichen Richtungen in dieselbe Bohrung hineinragenden Stege nicht berühren.In another embodiment, it is provided that the length of the webs is less than half the thickness of the core element in the direction of the holes in the core element. As a result, a web can basically protrude into each bore from each side, without the webs touching each other. Of course, the lengths of the webs can also be designed differently and / or differently, as long as it is ensured that the protruding from different directions in the same bore webs do not touch.

Ferner ist bevorzugt vorgesehen, dass mindestens ein Formelement einen Erdungsanschluss aufweist, so dass nicht mehr, wie bei der bekannten Montagevorrichtung, ein zusätzlicher Erdungsanschluss an der Metallschiene montiert werden muss.Furthermore, it is preferably provided that at least one mold element has a ground connection, so that no longer, as in the known mounting device, an additional ground terminal must be mounted on the metal rail.

In einer weiteren Ausgestaltung ist vorgesehen, dass mindestens ein Formteil Anschlusselemente aufweist zur fixierten, lösbaren Anbringung von Verbindungselementen, insbesondere Anschlussklemmen. Somit erfüllt das Formteil einen doppelten Zweck.In a further embodiment, it is provided that at least one molded part has connecting elements for the fixed, detachable attachment of connecting elements, in particular connecting terminals. Thus, the molding performs a dual purpose.

Bevorzugt ist ferner vorgesehen, dass die Anschlusselemente als Löcher zur Aufrastung von Anschlussklemmen ausgebildet sind, so dass die Verbindungselemente verrutschsicher an dem Formteil mit den Anschlusselementen montiert werden können. Bevorzugt sind die Anschlusselemente dabei so ausgestaltet, dass die Verbindungselemente in montiertem Zustand nicht mehr seitlich verschoben werden können, was bei der bekannten Montagevorrichtung noch möglich ist und was häufig zu einem Abreißen von Anschlüssen an den Verbindungselementen führt. Um dies zu verhindern, werden bei der bekannten Montagevorrichtung die Verbindungselemente häufig mühsam fixiert, beispielsweise durch mechanische Verformung der Metallschiene oder durch Verwendung von Klebematerial. All dies entfällt bei dieser Weiterbildung der erfindungsgemäßen Montagevorrichtung.Preferably, it is further provided that the connection elements are designed as holes for latching terminals, so that the connection elements can be mounted against slipping on the molded part with the connection elements. Preferably, the connection elements are designed such that the connecting elements in the assembled state can not be moved laterally, which is still possible in the known mounting device and which often leads to tearing off of connections to the connecting elements. To prevent this, the connecting elements are often laboriously fixed in the known mounting device, for example, by mechanical deformation of the metal rail or by using adhesive material. All this is eliminated in this development of the mounting device according to the invention.

Die Erfindung betrifft auch eine Spulenvorrichtung, insbesondere einen Transformator und eine Drossel, mit einem magnetisch leitenden Kernelement, mindestens einer Spulenwicklung und einer Montagevorrichtung der oben beschriebenen, erfindungsgemäßen Art.The invention also relates to a coil device, in particular a transformer and a choke, with a magnetically conductive core element, at least one coil winding and a mounting device of the type described above according to the invention.

Die Erfindung wird nachfolgend anhand der Zeichnungen näher erläutert. Es zeigen:

Fig. 1A
eine bekannte Montagevorrichtung in an einem Kernelement einer Spulenvorrichtung montiertem Zustand,
Fig. 1B
die in Fig. 1A gezeigte bekannte Montagevorrichtung in Explosionsdarstellung,
Fig. 2A
eine erfindungsgemäße Montagevorrichtung in an einer Spulenvorrichtung montiertem Zustand und
Fig. 2B
die in Fig. 2A gezeigte Montagevorrichtung in Explosionsdarstellung.
The invention will be explained in more detail with reference to the drawings. Show it:
Fig. 1A
a known mounting device mounted in a core element of a coil device state,
Fig. 1B
the exploded view of the known mounting device shown in FIG. 1A,
Fig. 2A
a mounting device according to the invention in mounted on a coil device state and
Fig. 2B
the mounting device shown in Fig. 2A in an exploded view.

In den Figuren 1A und 1B ist eine bekannte Montagevorrichtung in montiertem Zustand bzw. in Explosionsdarstellung gezeigt. Von der Spulenvorrichtung, an der die Montagevorrichtung angebracht ist, ist hier nur das Kernelement 1, hier ein Transformatorkern, gezeigt, an dessen oberem Joch 2 die Montagevorrichtung montiert ist. Dazu sind bei dem gezeigten Ausführungsbeispiel drei Durchgangsbohrungen 3 durch das Joch 2 geführt, durch die drei entsprechende Schrauben 10 der Montagevorrichtung zur Befestigung einer Metallschiene 11 vollständig hindurchgeführt und am anderen Ende mittels Muttern 12 befestigt werden. Dies kann grundsätzlich zu Wärmeverlusten führen, da während des Betriebs durch die Schrauben grundsätzlich ein Strom fließen kann. Deshalb ist es grundsätzlich erforderlich, die Schrauben 10 gegenüber dem Kernelement 1 elektrisch zu isolieren, beispielsweise durch Verwendung spezieller, elektrisch isolierter Schrauben, was einen zusätzlichen Aufwand, insbesondere zusätzliche Kosten, verursacht. Trotz dessen können auch bei nicht sachgerechter Ausführung Wärmeverluste auftreten.In Figures 1A and 1B, a known mounting device in the assembled state or in exploded view is shown. Of the coil device to which the mounting device is mounted, only the core element 1, here a transformer core, is shown here, on whose upper yoke 2 the mounting device is mounted. For this purpose, in the embodiment shown, three through holes 3 are passed through the yoke 2, are completely passed through the three corresponding screws 10 of the mounting device for fixing a metal rail 11 and secured at the other end by means of nuts 12. This can basically lead to heat losses, since during operation by the screws basically a current can flow. Therefore, it is basically necessary to electrically insulate the screws 10 from the core element 1, for example by using special, electrically insulated screws, which causes additional expense, in particular additional costs. Despite this, heat losses can occur even if not performed properly.

Die Metallschiene 11 hat oft eine Höhe von 10mm bzw. eine Nut von 10mm vom Rand des Jochs 2 des Kernelements 1 entfernt. Diese 10mm entsprechen damit genau dem erforderlichen Rastmaß standardisierter Verbindungselemente, hier beispielsweise Transformatorklemmen 13 zum Anschließen von externen (nicht gezeigten) Verbindungsleitungen mit den (nicht gezeigten) Spulenwicklungen. Auf der Metallschiene 11 können sich die Klemmen 13 jedoch seitlich verschieben, wodurch die an den Klemmen angebrachten Anschlüsse abreißen und es zu Ausfällen kommen kann. Um dies zu verhindern, werden die Klemmen 13 häufig mühsam fixiert, beispielsweise durch mechanische Verformung der Schiene 11 oder durch Verwendung von Klebern.The metal rail 11 often has a height of 10 mm or a groove of 10 mm from the edge of the yoke 2 of the core element 1. These 10mm thus correspond exactly to the required locking dimension standardized fasteners, here for example transformer terminals 13 for connecting external (not shown) connecting lines with the coil windings (not shown). On the metal rail 11, however, the terminals 13 can move laterally, causing the terminals attached to the terminals tear off and it can come to failures. To prevent this, the terminals 13 are often laboriously fixed, for example by mechanical deformation of the rail 11 or by the use of adhesives.

Schließlich muss an der Schiene 11 ein zusätzlicher Erdungsanschluss 14 gesondert montiert werden zum Anschluss einer Erdungsleitung. Ferner sind zusätzlich die auf den Schenkeln des Transformatorkerns 1 aufgewickelten Spulen 4 erkennbar.Finally, an additional ground terminal 14 must be separately mounted on the rail 11 for connection of a grounding line. Furthermore, the wound on the legs of the transformer core 1 coils 4 are also recognizable.

In den Fig. 2A und 2B ist eine erfindungsgemäße Montagevorrichtung in montiertem Zustand bzw. in Explosionsdarstellung gezeigt. Erkennbar ist wiederum von der Spulenvorrichtung der Transformatorkern 1, in dessen oberem Joch 2 sich drei Durchgangsbohrungen 3 befinden. Auch hier sind zusätzlich bereits die auf den Schenkeln des Transformatorkerns 1 aufgewickelten Spulen 4 erkennbar.FIGS. 2A and 2B show a mounting device according to the invention in the mounted state or in an exploded view. Recognizable in turn of the coil device of the transformer core 1, in whose upper yoke 2, three through holes 3 are located. Here too, the coils 4 wound up on the legs of the transformer core 1 are already recognizable.

Die erfindungsgemäße Montagevorrichtung umfasst im wesentlichen zwei Formteile 20, 21, die so ausgebildet sind, dass sie die Oberseite des Jochs 2 des Transformatorkerns 1 umschließen. Beide Formteile 20, 21 weisen bei der gezeigten Ausführungsform eine der Anzahl der Bohrungen 3 entsprechende Anzahl von Stegen 22 auf. Diese Stege 22 sind so ausgebildet und an derartigen Stellen an den Formteilen 20, 21 angebracht, dass sie bei Montage der Formteile 20, 21 an dem Transformatorkern 1 in die Bohrungen 3 hineinragen. Dabei ist die Länge der Stege 22 so gewählt, dass sich die Stege des Formteils 20 und die Stege des Formteils 21 in montiertem Zustand nicht berühren, wodurch Stromfluss durch die Stege beim Betrieb der Spulenvorrichtung verhindert wird. Eine aufwendige Isolation, wie sie für die Schrauben 10 bei der bekannten Montagevorrichtung erforderlich ist, kann bei der erfindungsgemäßen Montagevorrichtung zwischen den Stegen 22 und den Bohrungen 3 bzw. dem Transformatorkern 1 entfallen.The mounting device according to the invention essentially comprises two mold parts 20, 21, which are designed such that they enclose the upper side of the yoke 2 of the transformer core 1. Both mold parts 20, 21 have in the embodiment shown a number of holes 3 corresponding number of webs 22. These webs 22 are formed and attached at such locations on the mold parts 20, 21 that they protrude when mounting the mold parts 20, 21 on the transformer core 1 in the holes 3. The length of the webs 22 is selected so that the webs of the molded part 20 and the webs of the molded part 21 do not touch in the assembled state, whereby current flow through the webs during operation of the coil device is prevented. An elaborate insulation, as required for the screws 10 in the known mounting device, can in the mounting device according to the invention between the webs 22 and the holes 3 and the transformer core 1 omitted.

Die Formteile 20, 21 sind ferner so ausgestaltet, dass sie sich an ihren Enden 23, 24 berühren und dort mittels zweier einfacher Montageschrauben 25, die unisoliert sein können, zusammen montiert werden. Dadurch wird auch eine gewisse Verklemmung der Formteile mit dem Transformatorkern 1 erreicht, um möglichst ein Verrutschen der Montagevorrichtung gegenüber dem Transformatorkern zu verhindern.The mold parts 20, 21 are further designed so that they touch at their ends 23, 24 and are mounted together there by means of two simple mounting screws 25, which may be uninsulated. As a result, a certain jamming of the moldings is achieved with the transformer core 1 in order to prevent slippage of the mounting device relative to the transformer core as possible.

Das Formteil 21 ist an seiner, von dem Transformatorkern 1 wegweisenden Seitenlänge als parallel zur Oberseite des Jochs 2 liegende Schiene 26 mit Löchern 27 am vorderen umgeklappten Rand ausgebildet. Diese Schiene 26 mit den Löchern 27 dient als Anschlusselement zur fixierten, lösbaren Anbringung der Anschlussklemmen 13, die bei dieser Ausgestaltung verrutschsicher aufgerastet werden können. Zusätzliche Maßnahmen zum Verhindern eines Verrutschens der Anschlussklemmen, wie es bei der bekannten Montagevorrichtung erforderlich ist, ist bei dieser Ausgestaltung nicht mehr erforderlich.The molded part 21 is formed on its side facing away from the transformer core 1 side length as lying parallel to the top of the yoke 2 rail 26 with holes 27 at the front folded edge. This rail 26 with the holes 27 serves as a connection element for the fixed, releasable attachment of the terminals 13, which can be locked in this embodiment slip-proof. Additional measures to prevent slippage of the terminals, as required in the known mounting device is no longer necessary in this embodiment.

Ferner ist bei der gezeigten Ausführungsform ein Erdungsanschluss 28 für die Spulenvorrichtung bereits in dem Formteil 21 integriert. Durch zusätzlich eingebrachte Bohrungen 29 in dem Formteil 21 können zudem weitere Anbauteile einfach montiert werden.Furthermore, in the embodiment shown, a grounding connection 28 for the coil device is already integrated in the molded part 21. By additionally introduced holes 29 in the molding 21 also more attachments can also be easily mounted.

Ferner sind bei der gezeigten Ausführungsform an den Enden 23, 24 der Formteile 20, 21 Löcher 30 eingearbeitet. Diese können als Kranösen, u.a. zum Transport der Spulenvorrichtung, dienen. Die in die Bohrungen 3 hineinragenden Stege 22 nehmen dabei einen großen Teil der Tragkräfte auf.Further, holes 30 are incorporated in the illustrated embodiment at the ends 23, 24 of the mold parts 20, 21. These can be used as crane eyelets, i.a. for transporting the coil device serve. The projecting into the holes 3 webs 22 take on a large part of the load-bearing forces.

Verglichen mit der bekannten Montagevorrichtung können bei der erfindungsgemäßen Montagevorrichtung keine Ströme durch irgendwelche Montageelemente fließen, die zur Montage durch Querbohrungen in dem Kernelement hindurchgeführt werden müssten. Dadurch wird das Auftreten von zusätzlichen Wärmeverlusten aufgrund solcher Ströme vollständig vermieden. Die erfindungsgemäße Montagevorrichtung lässt sich zudem einfach und kostengünstig herstellen, ist leicht zu montieren und bietet weitere Vorteile. Beispielsweise können bei entsprechender Ausgestaltung die Verbindungselemente, insbesondere Anschlussklemmen, leicht und verrutschsicher aufmontiert werden, die Montagevorrichtung kann auch zum Transport der Spulenvorrichtung verwendet werden, und es lassen sich leicht weitere Bauteile montieren.Compared with the known mounting device no currents can flow through any mounting elements in the mounting device according to the invention, which would have to be passed for mounting by transverse bores in the core element. This completely avoids the occurrence of additional heat losses due to such currents. The mounting device according to the invention can also be produced easily and inexpensively, is easy to assemble and offers more advantages. For example, with appropriate design, the connecting elements, in particular terminals, are mounted easily and securely against slipping, the mounting device can also be used to transport the coil device, and it can be easily mounted more components.

Die Erfindung ist nicht auf die gezeigte Ausführungsform beschränkt. Insbesondere können die Verbindungsstege auch hinsichtlich ihrer Form, Anzahl und Anordnung anders ausgestaltet sein, wobei bei allen Ausgestaltungen zu gewährleisten ist, dass sich Stege innerhalb der Bohrungen in dem Kernelement nicht berühren. Die Erfindung ist auch nicht auf die Anwendung bei einem Transformator beschränkt, sondern kann grundsätzlich bei allen Spulenvorrichtungen, die einen magnetisch leitenden Kern aufweisen und bei denen das Problem der Wärmeverluste aufgrund von durch den Kern führenden Montageelementen auftreten kann, angewendet werden.The invention is not limited to the embodiment shown. In particular, the connecting webs can also be configured differently in terms of their shape, number and arrangement, it being ensured in all embodiments that webs do not touch within the holes in the core element. Also, the invention is not limited to application to a transformer, but can basically be applied to all coil devices which have a magnetically conductive core and in which the problem of heat loss due to core-passing mounting members may occur.

Claims (9)

Montagevorrichtung für eine ein magnetisch leitendes Kernelement aufweisende Spulenvorrichtung, insbesondere für einen Transformator oder eine Drossel, zur Verspannung des Kernelements,
dadurch gekennzeichnet, dass die Montagevorrichtung zwei an gegenüber liegenden Seiten des Kernelements anzubringende Formteile aufweist und dass die Formteile jeweils mindestens einen Steg aufweisen zur Einbringung in korrespondierende, in dem Kernelement angebrachte Bohrungen, wobei die Stege so ausgestaltet und angeordnet sind, dass sich bei an der Spulenvorrichtung angebrachter Montagevorrichtung Stege unterschiedlicher Formteile nicht berühren.Mounting device for a coil device having a magnetically conductive core element, in particular for a transformer or a choke, for clamping the core element,
characterized in that the mounting device has two molded parts to be attached to opposite sides of the core element and that the mold parts each have at least one web for introduction into corresponding, mounted in the core element holes, wherein the webs are configured and arranged so that at at the Coil device attached mounting device do not touch webs of different moldings. Montagevorrichtung nach Anspruch 1,
dadurch gekennzeichnet, dass die Formteile so ausgestaltet sind, dass sie jeweils in etwa die Hälfte des Kernelements umschließen und dass sie an den Berührungsstellen Befestigungsmittel zur gegenseitigen Verbindung und Befestigung aufweisen, insbesondere Löcher zur Aufnahme von Montageschrauben.Mounting device according to claim 1,
characterized in that the mold parts are designed so that they each enclose about half of the core element and that they have at the points of contact fastening means for mutual connection and fastening, in particular holes for receiving mounting screws. Montagevorrichtung nach Anspruch 2,
dadurch gekennzeichnet, dass an den Berührungsstellen der Formelemente Kranösen angeordnet sind zum Transport der Spulenvorrichtung.Mounting device according to claim 2,
characterized in that arranged at the points of contact of the mold elements crane eyes for transporting the coil device. Montagevorrichtung nach einem der vorstehenden Ansprüche,
dadurch gekennzeichnet, dass die Stege an dem ersten Formelement an anderen Stellen angebracht sind als die Stege an dem zweiten Formelement.Mounting device according to one of the preceding claims,
characterized in that the webs are attached to the first mold element at other locations than the webs on the second mold element. Montagevorrichtung nach einem der vorstehenden Ansprüche,
dadurch gekennzeichnet, dass die Länge der Stege geringer ist als die Hälfte der Dicke des Kernelements in Richtung der Bohrungen in dem Kernelement.Mounting device according to one of the preceding claims,
characterized in that the length of the webs is less than half the thickness of the core element in the direction of the bores in the core element. Montagevorrichtung nach einem der vorstehenden Ansprüche,
dadurch gekennzeichnet, dass mindestens ein Formelement einen Erdungsanschluss aufweist.Mounting device according to one of the preceding claims,
characterized in that at least one mold element has a ground terminal. Montagevorrichtung nach einem der vorstehenden Ansprüche,
dadurch gekennzeichnet, dass mindestens ein Formteil Anschlusselemente aufweist zur fixierten, lösbaren Anbringung von Verbindungselementen, insbesondere Anschlussklemmen.Mounting device according to one of the preceding claims,
characterized in that at least one molded part has connecting elements for the fixed, detachable attachment of connecting elements, in particular connecting terminals. Montagevorrichtung nach Anspruch 7,
dadurch gekennzeichnet, dass die Anschlusselemente als Löcher zur Aufrastung von Anschlussklemmen ausgebildet sind.Mounting device according to claim 7,
characterized in that the connection elements are designed as holes for latching terminals. Spulenvorrichtung, insbesondere Transformator oder Drossel, mit einem magnetisch leitenden Kernelement, mindestens einer Spulenwicklung und einer Montagevorrichtung nach einem der vorstehenden Ansprüche.Coil device, in particular transformer or choke, with a magnetically conductive core element, at least one coil winding and a mounting device according to one of the preceding claims.
EP07013088A 2006-09-12 2007-07-04 Screwless core assembly device Withdrawn EP1901318A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200610042706 DE102006042706B4 (en) 2006-09-12 2006-09-12 Core screwless mounting device

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EP1901318A2 true EP1901318A2 (en) 2008-03-19
EP1901318A3 EP1901318A3 (en) 2009-09-23

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Publication number Priority date Publication date Assignee Title
CN102082021B (en) * 2009-11-30 2012-02-22 成都深蓝高新技术发展有限公司 Three-phase reactor with six-hole iron core
CN103662386A (en) * 2013-12-20 2014-03-26 保定天威保变电气股份有限公司 Transport beam structure of converter transformer

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DE19945817A1 (en) * 1999-09-20 2001-04-12 Hager Electro Gmbh Connection block for electric distributor especially for connection of protective and neutral conductors, comprises bridges for connection of busbar section at module fitted adjacent to carrying strip
EP1808872A2 (en) * 2006-01-17 2007-07-18 Gbe S.R.L. Clamping, compacting and lifting system for electric transformers and reactors

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DE9004387U1 (en) * 1990-04-17 1990-06-21 R. Schmidt Gmbh, 57368 Lennestadt Plastic coil body
DE19508695B4 (en) * 1995-03-02 2004-03-25 Wago Verwaltungsgesellschaft Mbh transformer terminal
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Publication number Priority date Publication date Assignee Title
GB772137A (en) * 1954-12-29 1957-04-10 T S Skillman And Company Pty L Improvements in electrical transformers and other cored coils
WO1993009584A1 (en) * 1991-11-01 1993-05-13 Neolite Neon Company Pty Limited Open circuit monitor
DE19945817A1 (en) * 1999-09-20 2001-04-12 Hager Electro Gmbh Connection block for electric distributor especially for connection of protective and neutral conductors, comprises bridges for connection of busbar section at module fitted adjacent to carrying strip
EP1808872A2 (en) * 2006-01-17 2007-07-18 Gbe S.R.L. Clamping, compacting and lifting system for electric transformers and reactors
ITVI20060018A1 (en) * 2006-01-17 2007-07-18 Gbe Srl TIGHTENING, COMPACTION AND LIFTING SYSTEM FOR TRANSFORMERS AND ELECTRIC REACTORS

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