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EP1952407A1 - Mica-reinforced insulation - Google Patents

Mica-reinforced insulation

Info

Publication number
EP1952407A1
EP1952407A1 EP06793986A EP06793986A EP1952407A1 EP 1952407 A1 EP1952407 A1 EP 1952407A1 EP 06793986 A EP06793986 A EP 06793986A EP 06793986 A EP06793986 A EP 06793986A EP 1952407 A1 EP1952407 A1 EP 1952407A1
Authority
EP
European Patent Office
Prior art keywords
mica
tube
insulating tube
carrier
hose
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
EP06793986A
Other languages
German (de)
French (fr)
Other versions
EP1952407B1 (en
Inventor
Bernhard Klaussner
Willi Lutz
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of EP1952407A1 publication Critical patent/EP1952407A1/en
Application granted granted Critical
Publication of EP1952407B1 publication Critical patent/EP1952407B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/02—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances
    • H01B3/08—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances quartz; glass; glass wool; slag wool; vitreous enamels
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]

Definitions

  • the invention relates to a mica-reinforced insulating tube for the isolation of electrical contact connections.
  • Electrical contact connections of electrical equipment, eg. B between coils of electrical machines or transformers are to be insulated against each other and against ground potential, in particular at rated voltages of more than 1 kV. This is followed, in particular for electrical equipment in the rated voltage range from 1 KV insulation of the contact connections by manual wrapping with Glim- merb skilledn.
  • JP 1160339 A2 discloses a microfluidic tube which has a plurality of layers, wherein the inner layer consists of strips containing mica and is followed by a resin coating which is surrounded by a heat-shrinkable tube.
  • the object of the invention to provide for contact connections in particular for electrical equipment with rated voltages above 1 KV insulation, which are easy to manufacture and have low wall thicknesses. Furthermore, the insulation should be flexible, so that corresponding contact connections can also be isolated with sufficient electrical strength.
  • the solution of the problem is also achieved by a method for producing a mica reinforced insulating hose characterized by the following steps: - A carrier hose is expanded by compressed air and / or a mandrel to a desired inner diameter, - a mica tape is located around in this state
  • Braided carrier hose - The overlap and / or the number of layers of mica tape is adjustable.
  • This mica reinforced insulation according to the invention is characterized by a layered structure which, according to the invention, is characterized by a carrier tube and mica materials located thereon.
  • a mica bandage By means of single-layer or multi-layer layers of a mica bandage with adjustable overlapping, the electrical strength or the partial discharge resistance can be adapted to the respective voltage requirements. These are the rated voltage stresses as well as the expected over-voltage effects in inverter operation of electrical machines or due to overvoltages due to network anomalies, e.g. Lightning strike or traveling wave effects on electrical wires and cables.
  • the layered construction can be carried out, for example, by braiding a fabric tube, which is braided, knitted or embroidered, with a coating of mica tape. Furthermore, continuous one-piece hoses with a coating of PU, acrylate or silicone with a mica tape can also be wrapped around in order to obtain a mica reinforced insulating hose for the insulation of electrical contact connections.
  • Mica is an inorganic insulating material and has comparatively very good electrical insulation and heat properties. In addition, a very good creepage and puncture resistance.
  • the electricity constant ⁇ r is between 5 and 8.
  • a mica tape has small pieces of mica, which are glued with a binder and pressed under the action of heat.
  • the density of mica pieces directly affects the electrical insulation properties.
  • this porous mica tape on an accelerator, which thereby favors the curing of the impregnating resin in the carrier tube.
  • mica reinforced insulating hose is provided with a mechanical protection of a fiber braid, which may be a glass or plastic fiber.
  • the inventive mica-reinforced insulating tube is produced in a preferred embodiment by the following steps: by compressed air and / or by a mandrel, the carrier tube is brought to the desired inner diameter, and in this state surrounded by a mica tape.
  • these two or three operations, producing the carrier tube with subsequent rewinding of the mica tape and possibly applying a mechanical see protective tube or protective braid can be performed by a device or a work process.
  • the mica content increases the electrical strength and the partial discharge resistance of the insulation even with a small wall thickness than unreinforced lacquered or extruded insulating hoses.
  • the mechanical strength and flexibility over conventional rolled mica tape rolls or tubes is e.g. significantly increased by the tissue reinforcement of the carrier tube. This also prevents a shift of the layers of mica tape, especially in the assembly of other parts, so that the electrical resistance of the electrical equipment can be guaranteed.
  • contacts in the rated voltage range above 1 kV can also be made resistant to partial discharges in a simple manner.
  • these hoses, which are now formed, are pushed over the respective location to be insulated in the case of the respective electrical equipment, such as electrical machines, converters, or transformers, without having to fear that the existing layers of the insulation will change their position.
  • the insulation is thus applied before the final shaping of the contact connection and withstands the mechanical stresses in this shaping.
  • the figure shows a section of an inventive insulation tube 1, the base of which forms a braided glass tube which is designed as a carrier tube 2.
  • This braided glass tube 2 is surrounded by a jacket 3, for example, LSR (liquid silicone rubber).
  • This jacket 3 is constructed, for example, from liquid silicone rubber.
  • This arrangement is now surrounded by a mica tape 4, which results in a mica layer defined layer thickness by a predetermined number of layers and / or a predetermined overlap of the individual layers.
  • the respective glimmer bands 4 advantageously have a respectively defined layer thickness and / or layer width.
  • a PET (poly-ethylene terrevalate) fiber braid 5 is suitable.
  • the preparation takes place in a correspondingly designed device, which can apply the individual layers defined.
  • the manufacturing steps are performed in a device.
  • knitted or knitted carrier hose 2 made of glass or synthetic fibers is brought to the desired inner diameter, for example by compressed air.
  • the carrier hose 2 can also be applied to a correspondingly dimensioned mandrel.
  • the carrier tube 2 is provided before the next step with a jacket 3 made of PU, acrylate or silicone.
  • the mica tape 4 is porous and advantageously contains an accelerator, in order thereby to favor the hardening of a potion resin in the carrier hose 2.
  • the mica portion of the carrier hose 2 is varied in sections and thus adjusted in a predeterminable manner.
  • a mechanical protection of the glim- merbandumsponnene carrier hose 2 is provided with a fiber mesh 5 made of glass or plastic fibers in an advantageous manner.
  • the mica content increases the electrical strength and the partial charge resistance of the insulating tube 1 with respect to painted or extruded relatively low wall thickness.
  • the mechanical strength and flexibility over conventional rolled mica tape rolls or tubes is among other things by the fabric reinforcement of the carrier tube 2 compared to other insulating tubes significantly increased.
  • the inventive mica reinforced insulating tube 1 has at least one of a mica tape 4 braided carrier hose 2.
  • a sheath 3 and / or a fiber braid 5 are provided.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Insulating Bodies (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

A mica-strengthened insulated tubing for electrical contact connections comprises a carrier tube (2) comprising a single- or multi-layer surrounding mica strip (4). The tube is formed as a textile that is plated laced or corded and made of glass or plastic fibers. Independent claims are also included for the following: (A) A tube as above in which the carrier tube is a one-piece sealed tube with a cover of poly-urethane, acrylate or silicone; (B) A production process for tubing as above;and (C) A production process for an electrical machine comprising the above.

Description

Beschreibungdescription

Glimmerverstärkte IsolationMica reinforced insulation

Die Erfindung betrifft einen glimmerverstärkten Isolierschlauch zur Isolation von elektrischen Kontaktverbindungen.The invention relates to a mica-reinforced insulating tube for the isolation of electrical contact connections.

Elektrische Kontaktverbindungen von elektrischen Betriebsmitteln, z. B zwischen Spulen elektrischer Maschinen oder Trans- formatoren sind insbesondere bei Nennspannungen über 1 KV elektrisch gegeneinander und gegen Erdpotential ausreichend zu isolieren. Dabei folgt, insbesondere bei elektrischen Betriebsmitteln im Nennspannungsbereich ab 1 KV eine Isolation der Kontaktverbindungen durch manuelle Umwicklung mit Glim- merbändern.Electrical contact connections of electrical equipment, eg. B between coils of electrical machines or transformers are to be insulated against each other and against ground potential, in particular at rated voltages of more than 1 kV. This is followed, in particular for electrical equipment in the rated voltage range from 1 KV insulation of the contact connections by manual wrapping with Glim- merbändern.

Bei geringeren Nennspannungen, also kleiner 1 KV erfolgt die Isolation in einer Vielzahl der Fälle durch an sich bekannte Isolierschlauche .At lower rated voltages, ie less than 1 KV, the insulation is carried out in a variety of cases by known Isolierschlauche.

Bei höheren Spannungen werden aber erhöhte Anforderungen an die elektrische Festigkeit und Teilentladungsbeständigkeit der Isolation bei gleichzeitig geringer Wandstärke gestellt. Diese Anforderung kann durch unverstärkte lackierte oder extrudierte Isolierschläuche nur unzureichend erfüllt werden.At higher voltages, however, increased demands are placed on the electrical strength and partial discharge resistance of the insulation while at the same time having a small wall thickness. This requirement can not be adequately met by unreinforced lacquered or extruded insulating hoses.

Durch manuelle Umwicklungen von Glimmerbändern auf Kontaktverbindungen besteht auch die Gefahr, dass die Lagen der Glimmerbänder bei der Montage verschoben werden und dadurch letztendlich in ihrer elektrischen Festigkeit im Betrieb dieser elektrischen Betriebsmittel reduziert werden.By manually wrapping mica tapes on contact connections, there is also a risk that the layers of mica tapes will be displaced during assembly and thereby ultimately reduced in their electrical strength in the operation of these electrical equipment.

Um diesen Nachteil zu vermeiden, kann die manuelle Umwicklung auch erst nach der endgültigen Formgebung der Kontaktverbin- düngen erfolgen. Aus der US 2 772 696 ist ein glimmerhaltiger Schlauch bekannt, der aufwändig durch flüssige Komponenten und Imprägnierung bzw. Teilaushärtung hergestellt wird.In order to avoid this disadvantage, the manual wrapping can also take place only after the final shaping of the contact connection. From US Pat. No. 2,772,696 a mica-containing hose is known which is elaborately produced by liquid components and impregnation or partial curing.

Aus der JP 1160339 A2 ist ein glimmerhaltiger Schlauch bekannt, der mehrere Lagen aufweist, wobei die innere Lage aus glimmerhaltigen Bändern besteht und sich eine Harzbeschich- tung anschließt, die von einem Schrumpfschlauch umgeben ist.JP 1160339 A2 discloses a microfluidic tube which has a plurality of layers, wherein the inner layer consists of strips containing mica and is followed by a resin coating which is surrounded by a heat-shrinkable tube.

Um dabei jeweils eine glimmerhaltige Isolation zu schaffen sind äußerst aufwändige Herstellverfahren anzuwenden, die dabei entstehenden Produkte weisen, um die erforderliche Isolationsfestigkeit zu erhalten dementsprechende Wandstärken des Schlauchs auf. Dies führt insbesondere bei höheren Nennspan- nungen (größer IKV) zu fertigungstechnischen Problemen. Die Schläuche weisen einen sehr eingeschränkten Flexibilität und damit einen sehr eingeschränkten Biegeradius auf.In order to create a mica-containing insulation in each case are extremely complex manufacturing process apply, the resulting products have to obtain the required insulation resistance corresponding wall thicknesses of the hose. This leads to manufacturing problems, especially at higher rated voltages (greater IKV). The hoses have a very limited flexibility and thus a very limited bending radius.

Ausgehend davon liegt die Aufgabe der Erfindung zugrunde, für Kontaktverbindungen insbesondere für elektrische Betriebsmittel mit Nennspannungen über 1 KV Isolationen zu schaffen, die einfach herzustellen sind und geringe Wanddicken aufweisen. Des Weiteren soll die Isolation flexibel sein, damit dementsprechende Kontaktverbindungen auch mit ausreichender elek- trischer Festigkeit isoliert werden können.Based on this, the object of the invention to provide for contact connections in particular for electrical equipment with rated voltages above 1 KV insulation, which are easy to manufacture and have low wall thicknesses. Furthermore, the insulation should be flexible, so that corresponding contact connections can also be isolated with sufficient electrical strength.

Die Lösung der gestellten Aufgabe gelingt durch einen glimmerverstärkten Isolierschlauch zur Isolation von elektrischen Kontaktverbindungen mit einem Trägerschlauch, der ein ein- oder mehrlagig umsponnenes Glimmerband aufweist.The solution of the problem is achieved by a mica-reinforced insulating tube for the isolation of electrical contact connections with a carrier tube having a single or multi-ply wound mica tape.

Die Lösung der gestellten Aufgabe gelingt aber auch durch ein Verfahren zur Herstellung eines glimmerverstärkten Isolier- schlauchs gekennzeichnet durch folgende Schritte: - ein Trägerschlauch wird durch Druckluft und/oder einen Dorn auf einen gewünschten Innendurchmesser aufgeweitet, - ein Glimmerband wird um den in diesem Zustand befindlichenThe solution of the problem is also achieved by a method for producing a mica reinforced insulating hose characterized by the following steps: - A carrier hose is expanded by compressed air and / or a mandrel to a desired inner diameter, - a mica tape is located around in this state

Trägerschlauch umsponnen, - dabei ist die Überlappung und/oder die Anzahl der Lagen des Glimmerbandes einstellbar.Braided carrier hose, - The overlap and / or the number of layers of mica tape is adjustable.

Diese erfindungsgemaße glimmerverstarkte Isolierung zeichnet sich durch einen geschichteten Aufbau aus, der erfindungsge- maß durch einen Tragerschlauch und darauf befindlichen Glimmerwerkstoffen gekennzeichnet ist. Durch ein- oder mehrlagige Schichten einer Glimmerbandage mit einstellbarer Überlappung kann die elektrische Festigkeit bzw. die Teilentladungsbe- standigkeit den jeweiligen Spannungserfordernissen angepasst werden. Das sind sowohl die Nennspannungsbeanspruchungen, als auch die zu erwarteten Uberspannungseffekte bei Umrichterbetrieb von elektrischen Maschinen oder aufgrund von Überspannungen aufgrund von Netzanomalien, wie z.B. Blitzeinschlag oder Wanderwelleneffekte auf elektrischen Leitungen und Kabeln .This mica reinforced insulation according to the invention is characterized by a layered structure which, according to the invention, is characterized by a carrier tube and mica materials located thereon. By means of single-layer or multi-layer layers of a mica bandage with adjustable overlapping, the electrical strength or the partial discharge resistance can be adapted to the respective voltage requirements. These are the rated voltage stresses as well as the expected over-voltage effects in inverter operation of electrical machines or due to overvoltages due to network anomalies, e.g. Lightning strike or traveling wave effects on electrical wires and cables.

Der geschichtete Aufbau kann beispielsweise dadurch erfolgen, dass ein Gewebeschlauch, der geflochten, gestrickt oder ge- klöppelt ausgeführt ist, mit einer Beschichtung aus Glimmerband umsponnen ist. Des Weiteren sind ebenfalls durchgehende also einstuckige Schlauche mit einer Beschichtung aus PU, Ac- rylat oder Silikon mit einem Glimmerband umspinnbar, um einen glimmerverstarkten Isolierschlauch zur Isolation von elektri- sehen Kontaktverbindungen zu erhalten.The layered construction can be carried out, for example, by braiding a fabric tube, which is braided, knitted or embroidered, with a coating of mica tape. Furthermore, continuous one-piece hoses with a coating of PU, acrylate or silicone with a mica tape can also be wrapped around in order to obtain a mica reinforced insulating hose for the insulation of electrical contact connections.

Glimmer ist ein anorganischer Isolierstoff und hat vergleichsweise sehr gute elektrische Isolations- und Warmeei- genschaften. Außerdem eine sehr gute Kriechstrom- und Durch- Schlagsfestigkeit. Die Elektrizitatskonstante εr liegt zwischen 5 und 8.Mica is an inorganic insulating material and has comparatively very good electrical insulation and heat properties. In addition, a very good creepage and puncture resistance. The electricity constant ε r is between 5 and 8.

Ein Glimmerband weist kleine Glimmerstucke auf, die mit einem Bindemittel verklebt und unter Wärmeeinwirkung gepresst wer- den. Die Dichte der Glimmerstucke beeinflusst direkt die elektrischen Isolationseigenschaffen . Vorteilhafterweise weist dieses poröse Glimmerband einen Beschleuniger auf, der dadurch die Aushärtung des Tränkharzes im Trägerschlauch begünstigt.A mica tape has small pieces of mica, which are glued with a binder and pressed under the action of heat. The density of mica pieces directly affects the electrical insulation properties. Advantageously, this porous mica tape on an accelerator, which thereby favors the curing of the impregnating resin in the carrier tube.

In einer weiteren vorteilhaften Ausgestaltung wird der glimmerverstärkte Isolierschlauch mit einem mechanischen Schutz aus einem Fasergeflecht, das eine Glas- oder Kunststofffaser sein kann, versehen.In a further advantageous embodiment of the mica reinforced insulating hose is provided with a mechanical protection of a fiber braid, which may be a glass or plastic fiber.

Der erfindungsgemäße glimmerverstärkte Isolierschlauch wird in einer bevorzugten Ausführungsform durch folgende Schritte hergestellt: durch Druckluft und/oder durch einen Dorn wird der Trägerschlauch auf den gewünschten Innendurchmesser gebracht, und in diesem Zustand mit einem Glimmerband umspon- nen.The inventive mica-reinforced insulating tube is produced in a preferred embodiment by the following steps: by compressed air and / or by a mandrel, the carrier tube is brought to the desired inner diameter, and in this state surrounded by a mica tape.

Vorteilhafterweise können diese beiden bzw. drei Arbeitsvorgänge, Herstellen des Trägerschlauchs mit anschließendem Umspinnen des Glimmerbandes und ggf. Aufbringen eines mechani- sehen Schutzschlauches oder Schutzgeflechts durch eine Vorrichtung bzw. einen Arbeitsvorgang durchgeführt werden.Advantageously, these two or three operations, producing the carrier tube with subsequent rewinding of the mica tape and possibly applying a mechanical see protective tube or protective braid can be performed by a device or a work process.

Der Glimmeranteil erhöht die elektrische Festigkeit und die Teilentladungsbeständigkeit der Isolierung auch bei geringer Wandstärke als bei unverstärkten lackierten oder extrudierten IsolierSchläuchen .The mica content increases the electrical strength and the partial discharge resistance of the insulation even with a small wall thickness than unreinforced lacquered or extruded insulating hoses.

Die mechanische Festigkeit und Flexibilität gegenüber herkömmlichen gerollten Glimmerbandröllchen oder -röhrchen wird z.B. durch die Gewebeverstärkung des Trägerschlauchs wesentlich erhöht. Diese verhindert darüber hinaus eine Verschiebung der Lagen des Glimmerbandes insbesondere bei der Montage anderer Teile, so dass die elektrische Festigkeit des elektrischen Betriebsmittels gewährleistet werden kann.The mechanical strength and flexibility over conventional rolled mica tape rolls or tubes is e.g. significantly increased by the tissue reinforcement of the carrier tube. This also prevents a shift of the layers of mica tape, especially in the assembly of other parts, so that the electrical resistance of the electrical equipment can be guaranteed.

Durch die erfindungsgemäße Isolierung sind auch Kontaktierungen im Nennspannungsbereich über 1 KV in einfacher Art und Weise gegenüber Teilentladungen resistent zu gestalten. Dabei werden diese nunmehr gebildeten Schlauche bei den jeweiligen elektrischen Betriebsmitteln, wie elektrische Maschinen, Umrichter, oder Transformatoren über die jeweilige zu isolierende Stelle geschoben, ohne die Befürchtung haben zu müssen, dass sich die vorhandenen Lagen der Isolation in ihrer Position verandern.Due to the insulation according to the invention, contacts in the rated voltage range above 1 kV can also be made resistant to partial discharges in a simple manner. In the process, these hoses, which are now formed, are pushed over the respective location to be insulated in the case of the respective electrical equipment, such as electrical machines, converters, or transformers, without having to fear that the existing layers of the insulation will change their position.

Die Isolation wird somit vor der endgültigen Formgebung der Kontaktverbindung aufgebracht und halt den mechanischen Bean- spruchungen bei dieser Formgebung stand.The insulation is thus applied before the final shaping of the contact connection and withstands the mechanical stresses in this shaping.

Auch die Herstellung von elektrischen Maschinen vereinfacht sich erheblich, da im Herstellungsprozess, die vorgefertigten erfindungsgemaßen flexiblen Isolierschlauche einfach über die zu isolierenden Kontaktverbindungen geschoben werden und mit der gesamten elektrischen Maschine anschließend imprägniert werden .The production of electrical machines is simplified considerably, since in the manufacturing process, the prefabricated inventive flexible insulating sleeves are simply pushed over the contact connections to be insulated and then impregnated with the entire electrical machine.

Die Erfindung sowie weitere vorteilhafte Ausgestaltungen der Erfindung gemäß Merkmalen der Unteranspruche werden im folgenden anhand eines schematisch dargestellten Ausfuhrungsbeispiels naher erläutert.The invention and further advantageous embodiments of the invention according to features of the dependent claims are explained in more detail below with reference to a schematically illustrated exemplary embodiment.

Die Figur zeigt einen Abschnitt eines erfindungsgemaßen Iso- lationsschlauches 1, dessen Basis ein geflochtener Glasschlauch bildet, der als Tragerschlauch 2 ausgebildet ist. Dieser geflochtene Glasschlauch 2 ist von einem Mantel 3 aus beispielsweise LSR (Liquid-Silicon-Rubber) umgeben. Dieser Mantel 3 ist beispielsweise aus flussigem Silikonkautschuk aufgebaut. Diese Anordnung ist nunmehr von einem Glimmerband 4 umgeben, das durch eine vorgegebene Lagenzahl und/oder einer vorgebbaren Überlappung der einzelnen Lagen eine Glimmerschicht definierter Schichtdicke ergibt. Die jeweiligen Glim- merbander 4 weisen vorteilhafterweise eine jeweils definier- ten Schichtdicke und/oder Lagenbreite auf.The figure shows a section of an inventive insulation tube 1, the base of which forms a braided glass tube which is designed as a carrier tube 2. This braided glass tube 2 is surrounded by a jacket 3, for example, LSR (liquid silicone rubber). This jacket 3 is constructed, for example, from liquid silicone rubber. This arrangement is now surrounded by a mica tape 4, which results in a mica layer defined layer thickness by a predetermined number of layers and / or a predetermined overlap of the individual layers. The respective glimmer bands 4 advantageously have a respectively defined layer thickness and / or layer width.

Als mechanischer Schutz eignet sich insbesondere eine PET (Poly-Ethylen-Terrespalat) -Fasergeflecht 5. Die Herstellung erfolgt in einer dementsprechend ausgestalteten Vorrichtung, die die einzelnen Schichten definiert aufbringen können. Vorteilhafterweise werden die Fertigungsschritte in einer Vorrichtung durchgeführt. Dabei wird einge- flochtener gestrickter oder geklöppelter Tragerschlauch 2 aus Glas- oder Kunstfasern z.B. durch Druckluft auf den gewünschten Innendurchmesser gebracht.As mechanical protection, in particular a PET (poly-ethylene terrevalate) fiber braid 5 is suitable. The preparation takes place in a correspondingly designed device, which can apply the individual layers defined. Advantageously, the manufacturing steps are performed in a device. In this case, knitted or knitted carrier hose 2 made of glass or synthetic fibers is brought to the desired inner diameter, for example by compressed air.

Alternativ dazu kann der Tragerschlauch 2 auch auf einen dem- entsprechend dimensionierten Dorn aufgebracht werden.Alternatively, the carrier hose 2 can also be applied to a correspondingly dimensioned mandrel.

In einer weiteren Ausfuhrungsform wird der Tragerschlauch 2 vor dem nächsten Verfahrensschritt mit einem Mantel 3 aus PU, Acrylat oder Silikon versehen.In a further embodiment of the carrier tube 2 is provided before the next step with a jacket 3 made of PU, acrylate or silicone.

In diesem Zustand wird nunmehr der Tragerschlauch 2 mit dem Glimmerband 4 umsponnen. Das Glimmerband 4 ist porös und enthalt vorteilhafterweise einen Beschleuniger, um dadurch die Aushärtung eines Trankharzes im Tragerschlauch 2 zu begunsti- gen.In this state, the carrier hose 2 is now wound with the mica tape 4. The mica tape 4 is porous and advantageously contains an accelerator, in order thereby to favor the hardening of a potion resin in the carrier hose 2.

Durch die Überlappung des Glimmerbandes 4 bei der Umspinnung wird in vorgebbarer Weise der Glimmeranteil des Trager- schlauchs 2 abschnittsweise variiert und damit eingestellt werden.As a result of the overlap of the mica tape 4 during the wrapping, the mica portion of the carrier hose 2 is varied in sections and thus adjusted in a predeterminable manner.

Als mechanischer Schutz wird in vorteilhafterweise der glim- merbandumsponnene Tragerschlauch 2 mit einem Fasergeflecht 5 aus Glas- oder Kunststofffasern versehen.As a mechanical protection of the glim- merbandumsponnene carrier hose 2 is provided with a fiber mesh 5 made of glass or plastic fibers in an advantageous manner.

Der Glimmeranteil erhöht die elektrischen Festigkeit und die Teilladungsbestandigkeit des Isoliersachlauchs 1 bei gegenüber lackierten oder extrudierten vergleichsweise geringer Wandstarke .The mica content increases the electrical strength and the partial charge resistance of the insulating tube 1 with respect to painted or extruded relatively low wall thickness.

Die mechanische Festigkeit und Flexibilität gegenüber herkömmlichen gerollten Glimmerbandrollchen oder -rohrchen wird u.a. durch die Gewebeverstärkung des Trägerschlauchs 2 im Vergleich zu anderen Isolierschläuchen wesentlich erhöht.The mechanical strength and flexibility over conventional rolled mica tape rolls or tubes is among other things by the fabric reinforcement of the carrier tube 2 compared to other insulating tubes significantly increased.

Dies verhindert darüber hinaus eine Verschiebung der Lagen des Glimmerbandes 4 insbesondere bei der Montage anderer Teile des elektrischen Betriebsmittels, so dass die elektrische Festigkeit des elektrischen Betriebsmittels z.B. einer elektrischen Maschine gewährleistet werden kann.This also prevents a shift of the layers of the mica tape 4, in particular in the assembly of other parts of the electrical equipment, so that the electrical strength of the electrical equipment, e.g. an electrical machine can be guaranteed.

Der erfindungsgemäße glimmerverstärkte Isolierschlauch 1 weist zumindest einen von einem Glimmerband 4 umsponnenen Trägerschlauch 2 auf. In weiteren Ausführungsformen sind eine Mantel 3 und/oder ein Fasergeflecht 5 vorgesehen. The inventive mica reinforced insulating tube 1 has at least one of a mica tape 4 braided carrier hose 2. In further embodiments, a sheath 3 and / or a fiber braid 5 are provided.

Claims

Patentansprüche claims 1. Glimmerverstärkter Isolierschlauch (1) zur Isolation von elektrischen Kontaktverbindungen mit einem Trägerschlauch (2), der ein ein- oder mehrlagig ihn umgebendes Glimmerband (4) aufweist.1. mica reinforced insulating tube (1) for the isolation of electrical contact connections with a carrier tube (2) having a single or multi-layer surrounding him mica tape (4). 2. Glimmerverstärkter Isolierschlauch (1) nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t , dass der Trägerschlauch (2) aus Gewebe hergestellt ist.2. mica-reinforced insulating tube (1) according to claim 1, d a d u r c h e c e in n e c e s that the carrier tube (2) is made of fabric. 3. Glimmerverstärkter Isolierschlauch (1) nach Anspruch 2, d a d u r c h g e k e n n z e i c h n e t , dass das Gewebe geflochten oder gestrickt oder geklöppelt ist.3. Mica-reinforced insulating tube (1) according to claim 2, characterized in that the fabric is braided or knitted or laced. 4. Glimmerverstärkter Isolierschlauch (1) nach Anspruch 3, d a d u r c h g e k e n n z e i c h n e t , dass das Ge¬ webe aus Glas- oder Kunstfasern aufgebaut ist.4. mica reinforced insulating tube (1) according to claim 3, characterized in that the Ge ¬ weave is constructed of glass or synthetic fibers. 5. Glimmerverstärkter Isolierschlauch (1) nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t , dass der5. Mica reinforced insulating tube (1) according to claim 1, characterized in that the Trägerschlauch (2) ein geschlossener, einstückiger Schlauch ist, der einen Mantel (3) aus PU, Acrylat oder Silikon auf¬ weist.Carrier hose (2) is a closed, one-piece hose, which has a jacket (3) made of PU, acrylate or silicone on ¬ . 6. Glimmerverstärkter Isolierschlauch (1) nach einem der vorhergehenden Ansprüche, d a d u r c h g e k e n n z e i c hn e t , dass als mechanischer Schutz ein zusätzliches Fasergeflecht (5) aus Glas- oder Kunststofffasern oder ein Schlauch vorhanden ist.6. Mica-reinforced insulating tube (1) according to one of the preceding claims, characterized in that an additional fiber braid (5) made of glass or plastic fibers or a hose is present as a mechanical protection. 7. Verfahren zur Herstellung eines glimmerverstärkten Iso- lierschlauchs (1) nach einem der vorhergehenden Ansprüche, g e k e n n z e i c h n e t durch folgende Schritte: - ein Trägerschlauch (2) wird durch Druckluft und/oder einen7. A method for producing a mica-reinforced insulating tube (1) according to any one of the preceding claims, by the following steps: - a carrier hose (2) is compressed air and / or a Dorn auf einen gewünschten Innendurchmesser aufgeweitet, - zumindest ein Glimmerband (4) wird um den in diesem Zustand befindlichen Trägerschlauch (2) umsponnen. - dabei ist die Überlappung und/oder die Anzahl der Lagen des Glimmerbandes (4) auf dem Tragerschlauch (2) einstellbar.Mandrel expanded to a desired inner diameter, - at least one mica tape (4) is wound around the carrier tube (2) located in this state. - It is the overlap and / or the number of layers of mica tape (4) on the carrier hose (2) adjustable. 8. Verfahren nach Anspruch 7, d a d u r c h g e k e n n - z e i c h n e t , dass als mechanischer Schutz auf den mit Glimmerband (4) umsponnenen Tragerschlauch (2) zusatzlich ein Fasergeflecht (5) aus Glas- oder Kunststofffasern aufgebracht wird.8. The method according to claim 7, characterized in that a fiber braid (5) of glass or plastic fibers is additionally applied as mechanical protection on the carrier hose (2) wound with mica tape (4). 9. Verfahren nach Anspruch 8, d a d u r c h g e k e n n z e i c h n e t , dass das Fasergeflecht (5) in Silikon oder ahnlichen Materialien getrankt wird.9. The method according to claim 8, wherein a fiber mesh (5) is impregnated in silicone or similar materials. 10. Verwendung eines Isolierschlauchs (1) nach einem der vor- hergehenden Ansprüche zur glimmerverstarkten Isolierung von10. Use of an insulating tube (1) according to one of the preceding claims for mica reinforced insulation of Kontaktierungen der Komponenten elektrischer Betriebsmitteln, insbesondere bei elektrischen Betriebsmitteln mit einer Nennspannung großer 1 KV.Contacting of the components of electrical equipment, especially in electrical equipment with a rated voltage of 1 KV. 11. Verwendung einer glimmerverstarkten Isolierung nach Anspruch 10, wobei die elektrischen Betriebsmittel Umrichter, Transformatoren oder elektrische Maschinen sind.11. Use of mica reinforced insulation according to claim 10, wherein the electrical equipment are converters, transformers or electrical machines. 12. Herstellungsverfahren einer elektrischen Maschine durch folgende Schritte:12. Manufacturing method of an electrical machine by the following steps: - Paketieren der Blechpakete von Stander und Laufer,- Packing the laminations of Stander and Laufer, - Einlegen der Spulen in den Stander und/oder den Laufer,Inserting the coils in the stander and / or the Laufer, - Bilden der Schaltverbindungen z.B. zwischen Spulen und gegebenenfalls Umrichter, wobei über die Schaltverbindungen ein glimmerverstarkter Isolierschlauch (1) nach einem der vorhergehenden Ansprüche geschoben wird. Forming the interconnections e.g. between coils and optionally converters, wherein a mica reinforced insulating tube (1) according to one of the preceding claims is pushed over the interconnections.
EP06793986A 2005-11-21 2006-10-06 Mica-reinforced insulation Not-in-force EP1952407B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005055290A DE102005055290B3 (en) 2005-11-21 2005-11-21 Mica-strengthened insulating tubing for electrical contact connections and electrical machine and production processes has fiber textile tube with mica layer or multi-layer
PCT/EP2006/067141 WO2007057251A1 (en) 2005-11-21 2006-10-06 Mica-reinforced insulation

Publications (2)

Publication Number Publication Date
EP1952407A1 true EP1952407A1 (en) 2008-08-06
EP1952407B1 EP1952407B1 (en) 2009-02-25

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EP06793986A Not-in-force EP1952407B1 (en) 2005-11-21 2006-10-06 Mica-reinforced insulation

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US (1) US20080286505A1 (en)
EP (1) EP1952407B1 (en)
CN (1) CN101313369B (en)
AT (1) ATE424029T1 (en)
BR (1) BRPI0618803B1 (en)
DE (2) DE102005055290B3 (en)
WO (1) WO2007057251A1 (en)

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EP2874280A1 (en) 2013-11-14 2015-05-20 Siemens Aktiengesellschaft Groove closure mass, groove closure and method for producing a groove closure
US10354779B2 (en) 2017-03-31 2019-07-16 Radix Wire & Cable, Llc Free air fire alarm cable
CN116454509A (en) 2019-03-01 2023-07-18 米沃奇电动工具公司 Battery packs for use with power tools

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Also Published As

Publication number Publication date
BRPI0618803A2 (en) 2011-09-13
WO2007057251A1 (en) 2007-05-24
CN101313369A (en) 2008-11-26
US20080286505A1 (en) 2008-11-20
EP1952407B1 (en) 2009-02-25
ATE424029T1 (en) 2009-03-15
CN101313369B (en) 2011-11-23
DE502006002980D1 (en) 2009-04-09
BRPI0618803B1 (en) 2018-01-23
DE102005055290B3 (en) 2007-05-03

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