EP0071953B1 - Elektrisches Isolierelement mit einer Einblock-Schirmgruppe - Google Patents

Elektrisches Isolierelement mit einer Einblock-Schirmgruppe Download PDF

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Publication number
EP0071953B1
EP0071953B1 EP82106987A EP82106987A EP0071953B1 EP 0071953 B1 EP0071953 B1 EP 0071953B1 EP 82106987 A EP82106987 A EP 82106987A EP 82106987 A EP82106987 A EP 82106987A EP 0071953 B1 EP0071953 B1 EP 0071953B1
Authority
EP
European Patent Office
Prior art keywords
fins
line
insulating element
electrical insulator
discontinuity
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.)
Expired
Application number
EP82106987A
Other languages
English (en)
French (fr)
Other versions
EP0071953A1 (de
Inventor
Alexandre Kaczerginski
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.)
Ceraver SA
Original Assignee
Ceraver SA
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 Ceraver SA filed Critical Ceraver SA
Priority to AT82106987T priority Critical patent/ATE13103T1/de
Publication of EP0071953A1 publication Critical patent/EP0071953A1/de
Application granted granted Critical
Publication of EP0071953B1 publication Critical patent/EP0071953B1/de
Expired legal-status Critical Current

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Classifications

    • 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
    • H01B17/32—Single insulators consisting of two or more dissimilar insulating bodies
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
    • Y10S264/54—Processes in making insulators
    • 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
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49227—Insulator making

Definitions

  • the present invention relates to an electrical insulating element comprising a one-piece group of insulating fins.
  • An insulating element according to the invention comprises an insulating central core, which may be a composite rod made of glass or synthetic fibers belonging to an electrical insulator; it can also be a support such as a cable end of the high-voltage cable type, bushing, or insulator tube for breaking chamber.
  • This central core is generally protected by a waterproof elastomer coating formed by a sheath and / or fins.
  • independent fins are threaded onto the central core previously sheathed, then glued end to end; these fins can also be molded successively by moving the mold along said central core.
  • all of the fins are molded simultaneously around said central core.
  • the mold is present at least in two parts which meet so as to define a "joint plane" passing through the axis of the insulating element.
  • a trace which will be called “molding joint” corresponding to the trace of the axial “joint plane”.
  • This trace therefore forms a continuous line from one end to the other of the insulating element and, by favoring the attachment of polluting deposits, causes the appearance of large leakage currents and risks of degradation.
  • Document FR-A-1 396 819 discloses an electrical insulating element comprising a one-piece group of molded fins having a continuous molding joint in the middle part between the edges of the two end fins. Between this middle part and the end parts of the electrical insulating element, the molding joints form circumferential lines. This known embodiment also does not sufficiently protect the insulator.
  • the present invention aims to overcome these drawbacks; it relates to an electrical insulating element comprising a monobloc group of molded fins surrounding an insulating core, characterized in that the surface of the block of fins has, between the edges of the two end fins, a discontinuous molding joint.
  • the molding joint has a discontinuity at the edge of at least one of the intermediate fins.
  • This discontinuity can correspond for example to an offset of the joint along an arc of about 90 ° along the edge of the fin concerned.
  • FIG 1 a composite insulator 1, having two end fittings 2 and 3 and an insulating element consisting of an insulating rod 10 (see Figure 2) protected by a monoblock group of fins which have been referenced extreme fins 4, 5 and intermediate fins 6, 7 (Figure 1) and 11, 12, 13 ( Figure 2).
  • the insulating assembly is of revolution about an axis 20. It can be seen in FIG. 2 that the molding joint follows a line 21 on the lower surface of the fin 11, the intermediate sleeve between the fins 11 and 12, and the upper part of the fin 12 to its edge. The seal undergoes a discontinuity at this level and follows a line 23, located in the plane of the figure, on the lower surface of the fin 12, the intermediate sleeve between the fins 12 and 13, and the fin 13. We see the line 23 'symmetrical with line 23 with respect to a plane, orthogonal to the plane of the figure; the symmetrical line of line 21 is not visible in the figure.
  • partial molds are used, each formed from two half-shells.
  • the axial joint planes of two adjacent partial molds are offset with respect to each other so as to achieve the desired discontinuity, at the desired angle (90 ° is only an example).
  • the molding joint may have several discontinuities between the edges of two end fins 4 and 5.
  • At least one discontinuity can appear on the surface of the sleeves located between two fins.
  • the underside of a fin may be planar, have a draft, or an undercut. (The name “lower” is arbitrary and corresponds to the arrangement of the insulator as it appears in the drawing.)
  • the fins can be made of a material chosen from EPDM (Ethylene - Propylene - Diene - Manomer), silicones, polyurethanes, or any other insulating elastomer, epoxides or the like.
  • EPDM Ethylene - Propylene - Diene - Manomer
  • silicones silicones
  • polyurethanes or any other insulating elastomer, epoxides or the like.
  • an insulating element according to the invention reduces the risk of a preferential path of the leakage current along the molding joint.
  • the composite electrical insulator is only one example of application.

Landscapes

  • Insulators (AREA)
  • Insulating Bodies (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Emergency Alarm Devices (AREA)
  • Bridges Or Land Bridges (AREA)
  • Burglar Alarm Systems (AREA)

Claims (4)

1. Elektrisches Isolierelement, das eine Monoblockgruppe von gegossenen Tellern aufweist, die eine isolierende Seele (10) umgeben, dadurch gekennzeichnet, dass die Oberfläche des Tellerblocks zwischen den Rändern der beiden Endteller (4, 5) eine unterbrochene Gussnaht (21, 23) aufweist.
2. Elektrisches Isolierelement nach Anspruch 1, dadurch gekennzeichnet, dass die Gussnaht eine Unterbrechung in Höhe des Rands mindestens eines der Zwischenteller aufweist.
3. Elektrisches Isolierelement nach Anspruch 2, dadurch gekennzeichnet, dass die Unterbrechung einer Verschiebung der Naht um einen Bogen von etwa 90° entlang dem Rand des Tellers entspricht.
4. Elektrisches Isolierelement nach Anspruch 1, dadurch gekennzeichnet, dass die Gussnaht eine Unterbrechung auf der Oberfläche eines Zylinders aufweist, der sich zwischen zwei aufeinanderfolgenden Tellern befindet.
EP82106987A 1981-08-05 1982-08-03 Elektrisches Isolierelement mit einer Einblock-Schirmgruppe Expired EP0071953B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82106987T ATE13103T1 (de) 1981-08-05 1982-08-03 Elektrisches isolierelement mit einer einblockschirmgruppe.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8115203A FR2511180A1 (fr) 1981-08-05 1981-08-05 Element isolant electrique comportant un groupe monobloc d'ailettes
FR8115203 1981-08-05

Publications (2)

Publication Number Publication Date
EP0071953A1 EP0071953A1 (de) 1983-02-16
EP0071953B1 true EP0071953B1 (de) 1985-05-02

Family

ID=9261194

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82106987A Expired EP0071953B1 (de) 1981-08-05 1982-08-03 Elektrisches Isolierelement mit einer Einblock-Schirmgruppe

Country Status (8)

Country Link
US (1) US4440975A (de)
EP (1) EP0071953B1 (de)
JP (1) JPS5830016A (de)
AT (1) ATE13103T1 (de)
BR (1) BR8204590A (de)
CA (1) CA1179030A (de)
DE (1) DE3263402D1 (de)
FR (1) FR2511180A1 (de)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2576655B1 (fr) * 1985-01-25 1990-02-23 Alsthom Atlantique Hauban isolant
US5233132A (en) * 1986-10-02 1993-08-03 Sediver Societe Europeenne D'isolateurs En Composite insulator comprising a fiber-resin rod and an insulating coating molded thereover
JPH0734725B2 (ja) * 1988-02-23 1995-04-19 加藤 武憲 サキイカ珍味及びその製造方法
FR2657721B1 (fr) * 1990-01-26 1992-05-15 Dervaux Ets Isolateur composite et son procede de fabrication.
US5300912A (en) * 1992-06-09 1994-04-05 Utility Solutions, Inc. Electrical cutout for high voltage power lines
US5830405A (en) * 1993-09-03 1998-11-03 Raychem Corporation Molding methods, track resistant silicone elastomer compositions and improved molded parts with better arcing, flashover and pollution resistance
JP2723468B2 (ja) * 1994-03-28 1998-03-09 日本碍子株式会社 ポリマー碍子
US6065207A (en) * 1995-03-20 2000-05-23 Ngk Insulators, Ltd. Composite insulators and a process for producing the same
US5822857A (en) * 1996-03-18 1998-10-20 Ngk Insulators, Ltd. Method of repairing shed portion of composite insulator
US5945636A (en) * 1996-04-22 1999-08-31 Hubbell Incorporated Electrical insulators with mechanical core and dielectric sheath
DE69736918T2 (de) 1996-07-31 2007-09-06 Prysmian Cavi E Sistemi Energia S.R.L. Zweischichtige elastische rohrförmige Umhüllung für elektrische Bauteile, insbesondere elektrische Kabelendverschlüsse, sowie dazugehöriges Herstellungsverfahren und Montage
DE69709459T2 (de) * 1996-07-31 2002-09-05 Pirelli Cavi E Sistemi S.P.A., Mailand/Milano Verfahren zur Herstellung eines isolierenden Überzugs mit schirmförmigem Profil
US5877453A (en) * 1997-09-17 1999-03-02 Maclean-Fogg Company Composite insulator
US5986216A (en) * 1997-12-05 1999-11-16 Hubbell Incorporated Reinforced insulator
CA2349253C (en) * 2000-12-26 2009-11-17 S&C Electric Company Method and arrangement for providing a gas-tight housing joint
US6952154B2 (en) * 2002-06-16 2005-10-04 Maclean-Fogg Company Composite insulator for fuse cutout
US6831232B2 (en) 2002-06-16 2004-12-14 Scott Henricks Composite insulator
EP1762447B1 (de) 2003-08-13 2008-11-12 Idas Informations- Daten- und Automationssysteme GmbH Verfahren und Vorrichtung zur Sicherung eines Fahrzeugs gegen Diebstahl
US7646282B2 (en) * 2007-12-14 2010-01-12 Jiri Pazdirek Insulator for cutout switch and fuse assembly
CN104599794B (zh) * 2015-01-05 2017-05-31 江苏神马电力股份有限公司 维修伞及绝缘子的维修方法
EP3591672B1 (de) * 2018-07-02 2023-03-29 Hitachi Energy Switzerland AG Isolator mit widerstandsgradient
WO2021021369A1 (en) 2019-08-01 2021-02-04 Infinite Cooling Inc. Systems and methods for collecting fluid from a gas stream
WO2021021370A1 (en) * 2019-08-01 2021-02-04 Infinite Cooling Inc. Panels for use in collecting fluid from a gas stream

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1396819A (fr) * 1964-05-28 1965-04-23 Electriciteit Mij Electrostoom Procédé pour le moulage d'un isolateur haute tension avec saillies radiales, en matière plastique
US3534133A (en) * 1966-08-19 1970-10-13 Licentia Gmbh Method of preparing seamless non-cylindrical insulators
DE1932949A1 (de) * 1969-06-28 1971-01-07 Bbc Brown Boveri & Cie Hochspannungs-Verbundisolator
US3786175A (en) * 1971-04-27 1974-01-15 Transmission Dev Ltd Electrical insulator having sheds arranged at an angle to its axis
FR2374729A1 (fr) * 1976-12-17 1978-07-13 Villamos Ipari Kutato Intezet Isolateur en matiere synthetique, procede pour sa fabrication et appareil pour la mise en oeuvre du procede
IT1114909B (it) * 1977-07-27 1986-02-03 Fidenza Vetraria Spa Isolatore elettrico in vetroresina e materiale organico per alte tensioni e relativo procedimento di fabbricazione

Also Published As

Publication number Publication date
EP0071953A1 (de) 1983-02-16
JPS5830016A (ja) 1983-02-22
ATE13103T1 (de) 1985-05-15
US4440975A (en) 1984-04-03
CA1179030A (fr) 1984-12-04
FR2511180A1 (fr) 1983-02-11
JPS6359207B2 (de) 1988-11-18
FR2511180B1 (de) 1984-03-09
BR8204590A (pt) 1983-07-26
DE3263402D1 (en) 1985-06-05

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