EP1467384B1 - Loop-shaped insulator - Google Patents

Loop-shaped insulator Download PDF

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Publication number
EP1467384B1
EP1467384B1 EP04006864A EP04006864A EP1467384B1 EP 1467384 B1 EP1467384 B1 EP 1467384B1 EP 04006864 A EP04006864 A EP 04006864A EP 04006864 A EP04006864 A EP 04006864A EP 1467384 B1 EP1467384 B1 EP 1467384B1
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EP
European Patent Office
Prior art keywords
loop
insulator
component
insulator component
thimbles
Prior art date
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Expired - Lifetime
Application number
EP04006864A
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German (de)
French (fr)
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EP1467384A2 (en
EP1467384A3 (en
Inventor
Martin Hoffmann
Philippe Leray
Marten Rankers
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Siemens AG
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Siemens AG
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Publication of EP1467384A3 publication Critical patent/EP1467384A3/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/02—Suspension insulators; Strain insulators
    • H01B17/12—Special features of strain insulators

Definitions

  • the invention relates to a loop insulator with a loop-shaped insulator component, which is connected to opposite terminal thimbles.
  • Such a loop insulator is for example from the patent US 5,725,952 and from the publication of Siemens AG with the order number A52813-W3001-A0001-02-00 B1 known.
  • the loop insulators SICAT 8WL3001 / 3002 described there are used to insulate the live conductor of electrical tracks from ground potential.
  • the loop-shaped insulator component consists of glass-fiber-reinforced plastic, namely of a self-contained glass fiber reinforced plastic strand. At opposite ends of this loop-shaped insulator component in each case a connection fitting is arranged, which is called Renkausche. These connection thimbles are often made of a copper-aluminum alloy.
  • the glass fibers of the insulator component which are impregnated with epoxy resin, are wound directly onto the connection thimbles and hardened there.
  • connection thimbles of the loop insulators and connection components held in the connection thimbles consist inter alia of different metals which have different electrochemical voltages. This can lead to electrochemical corrosion as a result of the humidity. In addition, a stress corrosion cracking, especially if brass connection thimbles are used, can not be ruled out.
  • connection thimbles always have circular openings in which the connection components are held.
  • thimble inserts made of copper-aluminum alloy, copper, brass and / or polyamide.
  • the loop-shaped isolator component surrounds the connection thimbles.
  • the loop-shaped insulator component often has a silicone sheath that could easily be damaged in the area of the connection thimbles. It can also come due to weather conditions disturbances.
  • the invention has for its object to provide a loop insulator, which is protected against mechanical damage. In particular, he should be able to withstand crosswinds and associated vibrations.
  • connection thimbles completely cover the insulator component in their area.
  • the connection thimbles are thus advantageously used not only for the connection of bolts, ropes and wires, but also for the mechanical protection of the insulator component.
  • a silicone sheath of the insulator component is protected.
  • the insulator component has a hydrophobic coating. This avoids that a film of water forms on the insulator component, which could be contaminated with dirt. It can therefore come to no impairment due to leakage currents on the insulator component.
  • the insulator component has a circular cross-section. This form allows a fast drainage of rainwater and thus a cleaning of the surface of the loop insulator by the rainwater.
  • the insulator component has drip edges. This further reduces the probability of the formation of a liquid or dirt layer. It can also come to creepage currents on the insulator component.
  • connection thimbles in their area cover the insulator component together with its hydrophobic coating.
  • the insulator component with its hydrophobic coating may have a circular cross-section.
  • the drawing shows a loop insulator with a loop-shaped insulator component 1, which is connected to opposite connecting thimbles 2, 3.
  • the connection thimbles 2, 3 consist of only a single non-electrochemically reacting and always stress crack-free metal or a combination of such a metal with a non-metallic material, such as plastic or ceramic. This can not lead to electrochemical corrosion or stress corrosion cracking.
  • Each Renkausche 2, 3 has an opening 4, 5, each with three corners.
  • the boundary surfaces of the openings 4, 5 are rounded, whereby a bolt or a wire or a rope or several wires or ropes better in one of the openings 4, 5 is inserted.
  • the insulator component 1 is bent parabolic in the region of the connection thimbles 2, 3 and the receiving surfaces of the connection thimbles 2, 3 are shaped accordingly. As a result, a better power transmission and thus a higher load capacity of the loop insulator is given at this compound than before.
  • connection thimbles 2, 3 for the insulator component 1 are in cross-section part of a rounded rectangle, whereby here is given a higher load capacity and reliability.
  • connection thimbles 2, 3 completely cover the isolator component 1 in their area and thus protect it against mechanical influences.
  • the insulator component 1 has a hydrophobic coating of suitable material.
  • the loop-shaped insulator component 1 has a circular cross-section and is provided with drip edges 6 in the form of disc-shaped rings. This avoids that a continuous water film can form on the insulator component 1.

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  • Insulators (AREA)
  • Insulating Bodies (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Communication Cables (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)

Abstract

Top (3) and bottom (2) connection cable-eyes each have their own top (5) and bottom (4) triangular holes and completely cover an insulating component (1) in their area. The insulating component is curved near the connection cable-eyes like a parabola and the cable-eye retaining surfaces are shaped accordingly.

Description

Die Erfindung betrifft einen Schlingenisolator mit einem schlingenförmigen Isolatorbauteil, das mit einander gegenüberliegenden Anschlusskauschen verbunden ist.The invention relates to a loop insulator with a loop-shaped insulator component, which is connected to opposite terminal thimbles.

Ein solcher Schlingenisolator ist beispielsweise aus der Patentschrift US 5,725,952 und aus der Veröffentlichung der Siemens AG mit der Bestellnummer A52813-W3001-A0001-02-00 B1 bekannt. Die dort beschriebenen Schlingenisolatoren SICAT 8WL3001/3002 werden eingesetzt, um die spannungsführende Oberleitung von elektrischen Bahnen vom Erdpotential zu isolieren. Das schlingenförmige Isolatorbauteil besteht aus glasfaserverstärktem Kunststoff, und zwar aus einem in sich geschlossenen glasfaserverstärkten Kunststoffstrang. An gegenüberliegenden Enden dieses schlingenförmigen Isolatorbauteils ist jeweils eine Anschlussarmatur angeordnet, die Anschlusskausche genannt wird. Diese Anschlusskauschen sind häufig aus einer Kupfer-Aluminium-Legierung gefertigt. Bei der Herstellung werden die mit Epoxidharz getränkten Glasfasern des Isolatorbauteils direkt auf die Anschlusskauschen gewickelt und dort gehärtet.Such a loop insulator is for example from the patent US 5,725,952 and from the publication of Siemens AG with the order number A52813-W3001-A0001-02-00 B1 known. The loop insulators SICAT 8WL3001 / 3002 described there are used to insulate the live conductor of electrical tracks from ground potential. The loop-shaped insulator component consists of glass-fiber-reinforced plastic, namely of a self-contained glass fiber reinforced plastic strand. At opposite ends of this loop-shaped insulator component in each case a connection fitting is arranged, which is called Anschlusskausche. These connection thimbles are often made of a copper-aluminum alloy. During production, the glass fibers of the insulator component, which are impregnated with epoxy resin, are wound directly onto the connection thimbles and hardened there.

Die bekannten Anschlusskauschen der Schlingenisolatoren und in den Anschlusskauschen gehaltene Anschlussbauteile wie Seile, Drähte oder Bolzen bestehen unter anderem aus unterschiedlichen Metallen, die unterschiedliche elektrochemische Spannungen haben. Es kann dadurch in Folge der Luftfeuchte zur elektrochemischen Korrosion kommen. Außerdem ist eine Spannungsrisskorrosion, insbesondere, falls Anschlusskauschen aus Messing verwendet werden, nicht auszuschließen.The known connection thimbles of the loop insulators and connection components held in the connection thimbles, such as ropes, wires or bolts, consist inter alia of different metals which have different electrochemical voltages. This can lead to electrochemical corrosion as a result of the humidity. In addition, a stress corrosion cracking, especially if brass connection thimbles are used, can not be ruled out.

Die bekannten Anschlusskauschen haben stets kreisrunde Öffnungen, in denen die Anschlussbauteile gehalten werden. In den Öffnungen befinden sich Kauscheneinsätze aus Kupfer-Aluminium-Legierung, aus Kupfer, aus Messing und/oder aus Polyamid. Das schlingenförmige Isolatorbauteil umgreift die Anschlusskauschen.The known connection thimbles always have circular openings in which the connection components are held. In the openings are thimble inserts made of copper-aluminum alloy, copper, brass and / or polyamide. The loop-shaped isolator component surrounds the connection thimbles.

Das schlingenförmige Isolatorbauteil hat häufig einen Silikonmantel, der im Bereich der Anschlusskauschen leicht beschädigt werden könnte. Auch kann es durch Witterungseinflüsse zu Störungen kommen.The loop-shaped insulator component often has a silicone sheath that could easily be damaged in the area of the connection thimbles. It can also come due to weather conditions disturbances.

Der Erfindung liegt die Aufgabe zugrunde, einen Schlingenisolator anzugeben, der vor mechanischen Beschädigungen geschützt ist. Insbesondere soll er auch Seitenwind und damit verbundenen Schwingungen standhalten können.The invention has for its object to provide a loop insulator, which is protected against mechanical damage. In particular, he should be able to withstand crosswinds and associated vibrations.

Die Aufgabe wird gemäß der Erfindung dadurch gelöst, dass die Anschlusskauschen in ihrem Bereich das Isolatorbauteil ganz überdecken. Die Anschlusskauschen werden also vorteilhafterweise nicht nur zum Anschließen von Bolzen, Seilen und Drähten, sondern auch zum mechanischen Schutz des Isolatorbauteils eingesetzt. Insbesondere wird ein Silikonmantel des Isolatorbauteils geschützt.The object is achieved according to the invention in that the connection thimbles completely cover the insulator component in their area. The connection thimbles are thus advantageously used not only for the connection of bolts, ropes and wires, but also for the mechanical protection of the insulator component. In particular, a silicone sheath of the insulator component is protected.

In einer vorteilhaften Ausführungsform der Erfindung hat das Isolatorbauteil einen hydrophoben Überzug. Damit wird vermieden, dass sich ein Wasserfilm auf dem Isolatorbauteil bildet, der mit Schmutz versetzt sein könnte. Es kann also zu keiner Beeinträchtigung infolge von Kriechströmen am Isolatorbauteil kommen.In an advantageous embodiment of the invention, the insulator component has a hydrophobic coating. This avoids that a film of water forms on the insulator component, which could be contaminated with dirt. It can therefore come to no impairment due to leakage currents on the insulator component.

In einer bevorzugten Ausführungsform der Erfindung hat das Isolatorbauteil einen kreisförmigen Querschnitt. Diese Form ermöglicht ein schnelles Ablaufen von Regenwasser und damit ein Reinigen der Oberfläche des Schlingenisolators durch das Regenwasser.In a preferred embodiment of the invention, the insulator component has a circular cross-section. This form allows a fast drainage of rainwater and thus a cleaning of the surface of the loop insulator by the rainwater.

In einer weiteren bevorzugten Ausführungsform der Erfindung weist das Isolatorbauteil Abtropfkanten auf. Damit wird die Wahrscheinlichkeit für das Entstehen einer Flüssigkeits- oder Schmutzschicht weiter vermindert. Es kann auch nicht zu Kriechströmen am Isolatorbauteil kommen.In a further preferred embodiment of the invention, the insulator component has drip edges. This further reduces the probability of the formation of a liquid or dirt layer. It can also come to creepage currents on the insulator component.

Beispielsweise können die verschiedenen Ausführungsformen in jeder beliebigen Kombination vorgesehen sein. Es ergibt sich stets ein noch weiter verbesserter Schutz des Schlingenisolators vor Beschädigungen. Insbesondere überdecken die Anschlusskauschen in ihrem Bereich das Isolatorbauteil zusammen mit seinem hydrophoben Überzug. Außerdem kann das Isolatorbauteil mit seinem hydrophoben Überzug einen kreisförmigen Querschnitt haben.For example, the various embodiments may be provided in any combination. It always results in a still further improved protection of the loop insulator from damage. In particular, the connection thimbles in their area cover the insulator component together with its hydrophobic coating. In addition, the insulator component with its hydrophobic coating may have a circular cross-section.

Ein Ausführungsbeispiel des Schlingenisolators nach der Erfindung wird anhand der Zeichnung näher erläutert:An embodiment of the loop insulator according to the invention will be explained in more detail with reference to the drawing:

Die Zeichnung zeigt einen Schlingenisolator mit einem schlingenförmigen Isolatorbauteil 1, das mit einander gegenüberliegenden Anschlusskauschen 2, 3 verbunden ist. Die Anschlusskauschen 2, 3 bestehen aus nur einem einzigen nicht elektrochemisch reagierenden und stets spannungsrissfreien Metall oder aus einer Kombination von einem solchen Metall mit einem nichtmetallischen Stoff, beispielsweise Kunststoff oder Keramik. Dadurch kann es nicht zur elektrochemischen Korrosion oder zur Spannungsrisskorrosion kommen.The drawing shows a loop insulator with a loop-shaped insulator component 1, which is connected to opposite connecting thimbles 2, 3. The connection thimbles 2, 3 consist of only a single non-electrochemically reacting and always stress crack-free metal or a combination of such a metal with a non-metallic material, such as plastic or ceramic. This can not lead to electrochemical corrosion or stress corrosion cracking.

Jede Anschlusskausche 2, 3 hat eine Öffnung 4, 5 mit jeweils drei Ecken. Ein nicht gezeigter Bolzen oder ein Draht mit kreisrundem Querschnitt, die in den Öffnungen 4, 5 gehalten werden, liegen dann mindestens an zwei Linien an der Anschlusskausche 2, 3 an, so dass sich eine gute Lastverteilung und eine geringe Flächenpressung ergeben.Each Anschlusskausche 2, 3 has an opening 4, 5, each with three corners. A bolt, not shown, or a wire with a circular cross-section, which are held in the openings 4, 5, then rest on at least two lines on the connection box 2, 3, so that a good load distribution and a low surface pressure result.

Die Begrenzungsflächen der Öffnungen 4, 5 sind abgerundet, wodurch ein Bolzen oder ein Draht oder ein Seil oder auch mehrere Drähte oder Seile besser in eine der Öffnungen 4, 5 einführbar ist.The boundary surfaces of the openings 4, 5 are rounded, whereby a bolt or a wire or a rope or several wires or ropes better in one of the openings 4, 5 is inserted.

Das Isolatorbauteil 1 ist im Bereich der Anschlusskauschen 2, 3 parabelförmig gebogen und die Aufnahmeflächen der Anschlusskauschen 2, 3 sind entsprechend geformt. Dadurch ist auch an dieser Verbindung eine bessere Kraftübertragung und damit eine höhere Belastbarkeit des Schlingenisolators gegeben als früher.The insulator component 1 is bent parabolic in the region of the connection thimbles 2, 3 and the receiving surfaces of the connection thimbles 2, 3 are shaped accordingly. As a result, a better power transmission and thus a higher load capacity of the loop insulator is given at this compound than before.

Die Aufnahmeflächen der Anschlusskauschen 2, 3 für das Isolatorbauteil 1 sind im Querschnitt Teil eines abgerundeten Rechtecks, wodurch auch hier eine höhere Belastbarkeit und Zuverlässigkeit gegeben ist.The receiving surfaces of the connection thimbles 2, 3 for the insulator component 1 are in cross-section part of a rounded rectangle, whereby here is given a higher load capacity and reliability.

Die Anschlusskauschen 2, 3 überdecken in ihrem Bereich das Isolatorbauteil 1 ganz und schützen es so vor mechanischen Einwirkungen.The connection thimbles 2, 3 completely cover the isolator component 1 in their area and thus protect it against mechanical influences.

Um eine Schmutz- oder Wasserschicht auf dem Isolatorbauteil 1 zu vermeiden, die zu Schäden führen kann, hat das Isolatorbauteil 1 einen hydrophoben Überzug aus geeignetem Material.In order to avoid a dirt or water layer on the insulator component 1, which can lead to damage, the insulator component 1 has a hydrophobic coating of suitable material.

Das schlingenförmige Isolatorbauteil 1 hat einen kreisförmigen Querschnitt und ist mit Abtropfkanten 6 in der Form von scheibenförmigen Ringen ausgestattet. Damit wird vermieden, dass sich ein durchgehender Wasserfilm auf dem Isolatorbauteil 1 ausbilden kann.The loop-shaped insulator component 1 has a circular cross-section and is provided with drip edges 6 in the form of disc-shaped rings. This avoids that a continuous water film can form on the insulator component 1.

Claims (4)

  1. Loop insulator having an insulator component (1) in the form of a loop, which is connected to mutually opposite connecting thimbles (2 and 3), characterized in that the connecting thimbles (2, 3) cover the insulator component (1) entirely in their area.
  2. Loop insulator according to Claim 1, characterized in that the insulator component (1) has a hydrophobic coating.
  3. Loop insulator according to Claim 1 or 2, characterized in that the insulator component (1) has a circular cross section.
  4. Loop insulator according to one of Claims 1 to 3, characterized in that the insulator component (1) has drip edges (6).
EP04006864A 2003-04-10 2004-03-22 Loop-shaped insulator Expired - Lifetime EP1467384B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10316556 2003-04-10
DE10316556 2003-04-10

Publications (3)

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EP1467384A2 EP1467384A2 (en) 2004-10-13
EP1467384A3 EP1467384A3 (en) 2005-01-12
EP1467384B1 true EP1467384B1 (en) 2010-08-11

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ID=32864435

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EP04006864A Expired - Lifetime EP1467384B1 (en) 2003-04-10 2004-03-22 Loop-shaped insulator

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EP (1) EP1467384B1 (en)
AT (1) ATE477578T1 (en)
DE (1) DE502004011499D1 (en)
PL (1) PL366972A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1083372B (en) * 1957-12-13 1960-06-15 Columbia Products Company Method of manufacturing a rod-shaped tensile insulator
DE20219940U1 (en) * 2002-12-24 2003-03-06 Fahrleitungsbau GmbH, 45329 Essen Isolator for local traffic conductor lines has isolating fibre around and between connection eyes which has a silicon coating held by adhesive

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5725952A (en) * 1992-06-09 1998-03-10 Raychem Limited Insulators

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1083372B (en) * 1957-12-13 1960-06-15 Columbia Products Company Method of manufacturing a rod-shaped tensile insulator
DE20219940U1 (en) * 2002-12-24 2003-03-06 Fahrleitungsbau GmbH, 45329 Essen Isolator for local traffic conductor lines has isolating fibre around and between connection eyes which has a silicon coating held by adhesive

Also Published As

Publication number Publication date
PL366972A1 (en) 2004-10-18
ATE477578T1 (en) 2010-08-15
EP1467384A2 (en) 2004-10-13
EP1467384A3 (en) 2005-01-12
DE502004011499D1 (en) 2010-09-23

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