EP0899764A2 - Structure isolante - Google Patents

Structure isolante Download PDF

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Publication number
EP0899764A2
EP0899764A2 EP98810829A EP98810829A EP0899764A2 EP 0899764 A2 EP0899764 A2 EP 0899764A2 EP 98810829 A EP98810829 A EP 98810829A EP 98810829 A EP98810829 A EP 98810829A EP 0899764 A2 EP0899764 A2 EP 0899764A2
Authority
EP
European Patent Office
Prior art keywords
insulating tube
component
component according
insulating
holder
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Withdrawn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
EP98810829A
Other languages
German (de)
English (en)
Other versions
EP0899764A3 (fr
Inventor
Daniel Schulz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ABB Schweiz AG
Original Assignee
Micafil AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Micafil AG filed Critical Micafil AG
Publication of EP0899764A2 publication Critical patent/EP0899764A2/fr
Publication of EP0899764A3 publication Critical patent/EP0899764A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/42—Driving mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/42—Driving mechanisms
    • H01H2033/426—Details concerning the connection of the isolating driving rod to a metallic part

Definitions

  • the invention is based on a component according to the preamble of claim 1.
  • electrically insulating Components used for example for the transmission of mechanical forces between on different electrical Potential modules. These components are if they are subjected to high mechanical loads, made of fiber-reinforced Made of plastics. Usually as Plastics used epoxy resins, and for reinforcement For example, glass fibers, polyester fibers and the like used. In the manufacture of the components According to one of the known methods, the fibers are corresponding plastics at overpressure or at Normal pressure or impregnated under vacuum, and then after appropriate shape then cured. The so Blanks are mechanically finished and, if this does not take place at the same time as the shape is provided at both ends with fittings for the Introduction of mechanical forces into the insulating body of the component are provided.
  • the invention as defined in claim 1 the task is based, one for the transfer of suitable electrically insulating mechanical forces Specify component, which is particularly low-mass, inexpensive and is mechanically high strength.
  • LCP Liquid Crystal Polymers
  • Such components can be used in switch technology use advantageously.
  • electrical engineering or Transformer construction can be used.
  • LCP is a thermoplastic polyester material, which is in the Temperature range, as it prevails in circuit breakers, can be used advantageously. With the material LCP they are Molecules arranged in a targeted manner. If at the Production of components is taken care that the LCP molecules towards the main ones mechanical stress, so a significantly greater mechanical strength than that of LCP manufactured components achieved, with the same dimensions as conventional, for example from a reinforced Components made of polyester composite.
  • the LCP material can be processed together with conventional mineral fillers such as quartz powder, aluminum oxide Al 2 O 3 , wollastonite, glass spheres, short glass fibers, synthetic mineral fibers etc. without impairing this molecular alignment too much. Fibers with a length of 10 ⁇ m to 1000 ⁇ m and a slenderness range from 1: 5 to 1:50 are particularly suitable as fillers.
  • conventional mineral fillers such as quartz powder, aluminum oxide Al 2 O 3 , wollastonite, glass spheres, short glass fibers, synthetic mineral fibers etc.
  • Wollastonite short fibers used as a filler.
  • the fiber length of these wollastonite short fibers is above specified range. There will be about 15 to 45 percent by volume Wollastonite short fibers added.
  • This component 1 shows a schematically illustrated partial section through a first embodiment of a component 1 according to the invention.
  • This component 1 is designed as an electrically insulating pull rod which, for example, mechanically actuates an arcing chamber of a circuit breaker which is at high voltage potential.
  • This component 1 has an insulating tube 2, which is produced from a liquid-crystalline polymer, referred to as LCP, by means of a known extrusion process using a rigid or a rotating extrusion head.
  • the cylindrical insulating tube 2 has an outer diameter D 1 and an inner diameter D 2 , its length is determined by the potential to be bridged by means of the component 1.
  • the insulating tube 2 extends along a central axis 3.
  • This Bracket 4 has one inserted into the insulating tube 2 metallic sleeve 5, which with at least one axially extending slot 6 is provided.
  • the sleeve 5 has a conical central Hole 7 on the opposite end of the insulating tube 2 to open.
  • a metallic expansion piece 8 embedded, which a appropriately trained to match the conical bore 7 Surface.
  • the opposite end of the insulating tube 2 facing end of the expansion piece 8 designed dielectric favorable.
  • a threaded bolt 9 is formed on the expansion piece 8 and extends through the bottom of the sleeve 5 and through a metallic support sleeve 10. That side of the support sleeve 10 which faces the opposite end of the insulating tube 2 is designed to be dielectrically favorable.
  • the support sleeve 10 comprises the end of the insulating tube 2 on the outside, the insulating tube 2 and the sleeve 5 lying flush on the bottom of the support sleeve 10.
  • the expansion piece 8 widens the sleeve 5 in the slotted area, which then presses the insulating tube 2 against the inner wall of the support sleeve 10, so that this end of the insulating tube 2 is clamped.
  • the protruding end of the threaded bolt 9 can be used for connecting the component 1 to other assemblies.
  • Fig. 2 shows a partial section through a second Embodiment of a component according to the invention 1.
  • This embodiment is in the heated insulating tube 2nd a metallic inner fitting 12 is pressed.
  • the Inner fitting 12 is on the opposite one End of the insulating tube 2 facing side dielectric trained cheap. That of the inner surface of the insulating tube 2 facing surface of the inner fitting 12 is with circumferential grooves 13 provided the sawtooth-like tips or have rounded flanks that cool down when cooling of the LCP material into the inner surface of the insulating tube Dig in 2, which makes it good against slipping secure connection is established.
  • the inner fitting 12 has a collar 14, which acts as a stop for the end of Insulating tube 2 is used.
  • the inner fitting 12 is with a centrally arranged threaded bore 15 provided for the Connection of component 1 with other modules can be used.
  • connection secured against slipping is further improved by means of a heat-shrunk outer sleeve 16.
  • the outer sleeve 16 has a bottom with a central opening. The outer sleeve 16 is pushed onto the insulating tube 2 connected to the inner fitting 12 until the bottom touches the collar 14.
  • the outer sleeve 16 is made of metal, its inner bore 17 has an undersize of about 0.2 mm, so that when the outer sleeve 16 is shrunk warm onto the insulating tube 2, a press fit is produced, as a result of which the insulating tube 2 is additionally pressed against the inner fitting 12. In this way, a particularly firm and permanent connection between the holder 4 consisting of the inner fitting 12 and the outer sleeve 16 and the insulating tube 2 is achieved. This connection point is approximately twice as long as the outer diameter D 1 of the insulating tube 2.
  • FIG. 3 shows a partial section through a third Embodiment of a component according to the invention 1.
  • This embodiment is in the heated insulating tube 2nd insert a metallic inner fitting 18.
  • the Inner fitting 18 is on the opposite one End of the insulating tube 2 facing side dielectric trained cheap. That of the inner surface of the insulating tube 2 facing surface of the inner fitting 18 is the largest Part cylindrical, this cylindrical part in the direction of the respective insulating tube end a crowned area 19.
  • This area 19 is with a radius of about 1000 mm without edge to the integrally formed part.
  • a collar 20 acts as a stop for the end of the insulating tube 2 pushed onto the inner fitting 18 serves.
  • the inner fitting 18 is central arranged threaded bore 15 provided for the Connection of component 1 with other modules can be used.
  • the connection between the inner fitting 18 and the insulating tube 2 is made by means of a heat-shrunk outer sleeve 21.
  • the end of the outer sleeve 21 facing the opposite end of the insulating tube 2 is designed to be dielectrically favorable.
  • This outer sleeve 21 is made of metal, its inner bore 22 is adapted to the outer shape of the inner fitting 18, it has an undersize of about 0.2 mm, so that when the outer sleeve 21 is shrunk warm onto the insulating tube 2, a press fit is created, as a result of which the insulating tube 2 is pressed against the inner fitting 18.
  • the end of the insulating tube 2 is pressed into the recess 23 in the spherical region 19 on the outside of the inner fitting 18.
  • the insulating tube 2 is compressed in such a way that the wall thickness increases slightly there, as a result of which the insulating tube 2 is secured against axial slipping.
  • This connection point is approximately twice as long as the outer diameter D 1 of the insulating tube 2.
  • FIG. 4 shows a schematically illustrated partial section through a fourth embodiment of a component 1 according to the invention.
  • a metallic inner fitting 24 is inserted into the heated insulating tube 2.
  • the inner fitting 24 is designed to be dielectrically favorable on the side facing the respectively opposite end of the insulating tube 2.
  • the surface of the inner fitting 24 facing the inner surface of the insulating tube 2 is cylindrical at both ends. Between the two cylindrical areas there is an indentation 25 which is approximately 3 mm deep, which has a radius of approximately 100 mm and which merges into the cylindrical areas mentioned in a well rounded manner.
  • a collar 26 adjoins the cylindrical area at the end, which serves as a stop for the end of the insulating tube 2 pushed onto the inner fitting 24.
  • the inner fitting 18 is provided with a centrally arranged threaded bore 15 which can be used for the connection of the component 1 with further assemblies.
  • the connection between the inner fitting 24 and the insulating tube 2 is made by means of an initially cylindrical-shaped metallic pressing sleeve 27, which is pushed warm onto the respective end of the insulating tube 2 and is then pressed together in the direction of the central axis 3 by means of a corresponding pressing tool.
  • the compression sleeve 27 thereby presses the insulating tube 2 into the recess 25 in a form-fitting manner, so that the insulating tube 2 is optimally secured against axial slipping.
  • the end of the compression sleeve 27 facing the opposite end of the insulating tube 2 is designed to be dielectrically favorable. In this way, a particularly strong and permanent connection between the holder 4 consisting of the inner fitting 24 and the compression sleeve 27 and the insulating tube 2 is achieved. This connection point is approximately twice as long as the outer diameter D 1 of the
  • the material for the described exemplary embodiments Vectra A 540 used, which with a Extrusion process, which uses a rotating extrusion head used, processed.
  • the name Vectra is a registered trademark of Hoechst Aktiengesellschaft, D-65926 Frankfurt am Main. In this The material contains 40% short fiber wollastonite. Is done before connecting to the bracket 4 Heating, the insulating tube 2 is each at 250 ° C. warmed up.
  • the metal parts of the respective bracket 4 to manufacture an aluminum alloy, since the mass of the Component 1 can advantageously be kept small.
  • the high-strength LCP material also enables an advantageous reduction in mass of the components 1.
  • this reduction is the masses to be moved is advantageous because both the drive and also the necessary damping elements for damping the Drive movements when entering a final position can be made smaller and therefore cheaper.

Landscapes

  • Insulating Bodies (AREA)
  • Installation Of Bus-Bars (AREA)
  • X-Ray Techniques (AREA)
  • Liquid Crystal Substances (AREA)
  • Inorganic Insulating Materials (AREA)
EP98810829A 1997-08-30 1998-08-21 Structure isolante Withdrawn EP0899764A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19737995 1997-08-30
DE19737995A DE19737995A1 (de) 1997-08-30 1997-08-30 Bauelement

Publications (2)

Publication Number Publication Date
EP0899764A2 true EP0899764A2 (fr) 1999-03-03
EP0899764A3 EP0899764A3 (fr) 1999-09-01

Family

ID=7840745

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98810829A Withdrawn EP0899764A3 (fr) 1997-08-30 1998-08-21 Structure isolante

Country Status (4)

Country Link
US (1) US6118078A (fr)
EP (1) EP0899764A3 (fr)
JP (1) JPH11152473A (fr)
DE (1) DE19737995A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1933347A1 (fr) * 2006-12-11 2008-06-18 ABB Technology AG Isolateur à haute tension avec un raccord de collage
US7514635B2 (en) 2003-07-02 2009-04-07 Abb Research Ltd Shaft, method for producing it and device for carrying out the method
WO2019110235A1 (fr) * 2017-12-08 2019-06-13 Siemens Aktiengesellschaft Élément de transmission
WO2020216546A1 (fr) * 2019-04-24 2020-10-29 Siemens Aktiengesellschaft Tige de commande d'un entraînement d'un interrupteur électrique

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1020582C2 (nl) * 2002-05-13 2003-11-25 Holec Holland Nv Aandrijfstang voor schakelaar.

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4963428A (en) 1985-09-26 1990-10-16 Foster Miller, Inc. Biaxially oriented ordered polymer films

Family Cites Families (15)

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Publication number Priority date Publication date Assignee Title
DE1400003A1 (de) * 1956-05-07 1968-10-10 British Insulated Callenders Verfahren zum Herstellen einer zugfesten Verbindung zwischen einer Metallarmatur undeinem glatten zylindrischen Stab oder Rohr aus glasfaserverstaerktem synthetischen Werkstoff
DE2551856A1 (de) * 1974-11-25 1976-05-26 Ceraver Struktur zur uebertragung von zugspannungen
FR2500207A1 (fr) * 1981-02-13 1982-08-20 Ceraver Isolateur electrique de type console isolante
US4458039A (en) * 1983-02-07 1984-07-03 Celanese Corporation Thermotropic liquid crystalline polymer blend with reduced surface abrasion
CH659155A5 (de) * 1983-03-28 1986-12-31 Sprecher & Schuh Ag Mechanisch beanspruchbare, elektrisch isolierende, faserarmierte kunststoff-stange mit endarmatur und verfahren zu ihrer herstellung.
JPS61290616A (ja) * 1985-06-18 1986-12-20 三菱電機株式会社 碍子形ガス遮断器
DE3623319A1 (de) * 1986-07-11 1988-01-21 Bayer Ag Thermotrope aromatische polyester/polysulfon-blockcokondensate, verfahren zu ihrer herstellung und ihre verwendung zur herstellung von fasern, folien, und formkoerpern
FR2635819B1 (fr) * 1988-09-01 1993-09-17 Geoservices Systeme de raccordement electriquement isolant d'elements tubulaires metalliques pouvant notamment servir de structure d'antenne situee a grande profondeur
US5030113A (en) * 1990-11-05 1991-07-09 Itt Corporation One-piece insulator body and flexible circuit
JPH05271465A (ja) * 1992-01-29 1993-10-19 Ebara Corp サーモトロピック液晶ポリマー組成物と絶縁材
US5459190A (en) * 1992-01-29 1995-10-17 Ebara Corporation Thermotropic liquid crystal polymer composition and insulator
TW401454B (en) * 1992-06-02 2000-08-11 Sumitomo Chemical Co Liquid crystal polyester resin composition and molded article
DE9212434U1 (de) * 1992-09-11 1993-05-19 Siemens AG, 8000 München Rohrförmige Zug- oder Druckstange aus faserverstärktem Isolierstoff für einen Hochspannungsschalter
US5904984A (en) * 1996-10-17 1999-05-18 Siemens Westinghouse Power Corporation Electrical insulation using liquid crystal thermoset epoxy resins
US5791911A (en) * 1996-10-25 1998-08-11 International Business Machines Corporation Coaxial interconnect devices and methods of making the same

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4963428A (en) 1985-09-26 1990-10-16 Foster Miller, Inc. Biaxially oriented ordered polymer films

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7514635B2 (en) 2003-07-02 2009-04-07 Abb Research Ltd Shaft, method for producing it and device for carrying out the method
EP1933347A1 (fr) * 2006-12-11 2008-06-18 ABB Technology AG Isolateur à haute tension avec un raccord de collage
CN101221840B (zh) * 2006-12-11 2011-09-14 Abb技术有限公司 带有粘合剂连接的高压绝缘器
WO2019110235A1 (fr) * 2017-12-08 2019-06-13 Siemens Aktiengesellschaft Élément de transmission
WO2020216546A1 (fr) * 2019-04-24 2020-10-29 Siemens Aktiengesellschaft Tige de commande d'un entraînement d'un interrupteur électrique

Also Published As

Publication number Publication date
EP0899764A3 (fr) 1999-09-01
JPH11152473A (ja) 1999-06-08
US6118078A (en) 2000-09-12
DE19737995A1 (de) 1999-03-04

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