EP0003972A1 - Câble électrique ou conducteur électrique comportant une enveloppe de caoutchouc de silicone - Google Patents

Câble électrique ou conducteur électrique comportant une enveloppe de caoutchouc de silicone Download PDF

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Publication number
EP0003972A1
EP0003972A1 EP79100413A EP79100413A EP0003972A1 EP 0003972 A1 EP0003972 A1 EP 0003972A1 EP 79100413 A EP79100413 A EP 79100413A EP 79100413 A EP79100413 A EP 79100413A EP 0003972 A1 EP0003972 A1 EP 0003972A1
Authority
EP
European Patent Office
Prior art keywords
film
envelope
electrical
electrical cable
line according
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.)
Ceased
Application number
EP79100413A
Other languages
German (de)
English (en)
Inventor
Bernd Fischer
Roland Knoch
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
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of EP0003972A1 publication Critical patent/EP0003972A1/fr
Ceased 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
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H01B7/1875—Multi-layer sheaths
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H01B7/20—Metal tubes, e.g. lead sheaths
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/29—Protection against damage caused by extremes of temperature or by flame
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/29—Protection against damage caused by extremes of temperature or by flame
    • H01B7/292—Protection against damage caused by extremes of temperature or by flame using material resistant to heat

Definitions

  • the invention is in the field of electrical cables and wires that have an outer covering made of silicone rubber.
  • Such cables and wires are mainly used where high ambient temperatures occur during operation.
  • Envelopes made of silicone rubber are known, for example, and are customary for flexible core lines and for single and multi-core hose lines; the core insulation may also consist of silicone rubber (ETZ-B 1971, page 573, DE-OS 26 59 541).
  • silicone rubber is a preferred insulating and sheathing material for electrical cables and wires, especially because of its temperature resistance, the use of this material is due to its relatively low values for tear resistance, notch resistance and heat pressure resistance, water vapor permeation and to a certain extent also set limits for flame retardancy.
  • the invention is therefore based on the object of tapping electrical cables and lines, the conductor or core or core consisting of a plurality of cores with an outer sheath made of silicone rubber, through a structural improvement of the sheath to open up a larger area of application.
  • a cable made of heat-resistant material is provided in such cables and wires, which is formed longitudinally or helically with overlapping band edges to form the tube and is arranged on the inside of the jacket or embedded in the jacket and which faces the jacket or the jacket (n) is siliconized.
  • the physical properties of the cover made of silicone rubber or a wire or cable or line having such a cover can be substantially improved, the type of improvement depending on the type of film used.
  • the silicone coating of the film is essential in all cases, by means of which an intimate connection of the film with the casing is achieved when the outer casing made of silicone rubber is vulcanized.
  • Suitable heat-resistant films are, for example, plastic films based on polymers or elastomers, in particular films based on polyesters, polycarbonates or fluoroplastics. Such films can be siliconized on one or both sides. If you arrange such foils on the inside of a silicone rubber insulation of a flexible wire on, the film prevents penetration of the silicone rubber insulation into the interstices of the multi-wire conductor of the flexible wire, whereby the flexibility of the wire as a whole and the strippability of the silicone rubber insulation are improved.
  • the siliconized film can also consist of a metal film made of, for example, copper or aluminum, or of a metal-clad plastic film.
  • the film can consist of a thin metal film with a layer of a glass fiber fabric or a glass fiber grid. The tensile forces of a corresponding cable or line are then essentially absorbed by the siliconized glass grid / aluminum foil.
  • the procedure is always such that first a siliconized film is applied lengthwise or helically to the conductor, the wire or the core consisting of several wires, optionally onto a previously extruded inner jacket made of silicone rubber , and that the outer covering made of silicone rubber is then extruded onto the film formed into the tube.
  • a siliconized film is applied lengthwise or helically to the conductor, the wire or the core consisting of several wires, optionally onto a previously extruded inner jacket made of silicone rubber , and that the outer covering made of silicone rubber is then extruded onto the film formed into the tube.
  • the subsequent vulcanization of the outer and possibly also the inner covering made of silicone rubber a homogeneous, intimate connection is created between the film and the outer and optionally the inner covering.
  • FIGS. 1 to 3 Two exemplary embodiments of an electrical line constructed according to the invention are shown in FIGS. 1 to 3.
  • Fig. 1 shows in cross section and Fig. 2 in an enlarged view in detail a multi-core electrical line 1, the wires 2 are stranded to the cable core.
  • the cores stranded together are initially surrounded by a core braid 3 onto which an inner jacket 4 made of silicone rubber is applied.
  • the inner jacket is surrounded by a film 5, which runs longitudinally into a tube with overlapping band edges, which consists of a thin aluminum film and is provided on both sides with a coating 6 made of silicone.
  • the outer covering 7 is also made of silicone rubber.
  • the film 5 is intimately connected to these coverings by means of the outer and the inner coating 6 during the heat treatment of the inner and outer coverings 4 and 7 carried out for vulcanization.
  • the film 5 blocks the permeation of moisture and superheated steam
  • the cable shown in the figure is therefore particularly suitable for use in power plants, that is to say in places where the action of superheated steam is to be expected.
  • Fig. 3 shows a flexible core line, the stranded conductor 10 is surrounded by insulation 11 made of silicone rubber.
  • the silicone-coated plastic film, which is welded to the insulation 11, is arranged on the inside of the insulation 11.

Landscapes

  • Insulated Conductors (AREA)
  • Laminated Bodies (AREA)
  • Insulating Bodies (AREA)
EP79100413A 1978-03-10 1979-02-12 Câble électrique ou conducteur électrique comportant une enveloppe de caoutchouc de silicone Ceased EP0003972A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19782810986 DE2810986A1 (de) 1978-03-10 1978-03-10 Elektrisches kabel oder elektrische leitung mit einer umhuellung aus silikonkautschuk
DE2810986 1978-03-10

Publications (1)

Publication Number Publication Date
EP0003972A1 true EP0003972A1 (fr) 1979-09-19

Family

ID=6034385

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79100413A Ceased EP0003972A1 (fr) 1978-03-10 1979-02-12 Câble électrique ou conducteur électrique comportant une enveloppe de caoutchouc de silicone

Country Status (3)

Country Link
EP (1) EP0003972A1 (fr)
BR (1) BR7901457A (fr)
DE (1) DE2810986A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3444500A1 (de) * 1984-05-24 1985-11-28 kabelmetal electro GmbH, 3000 Hannover Schwer entflammbares elektrisches oder optisches kabel
DE3902842A1 (de) * 1989-01-31 1990-08-02 Kaiser Kabel Gmbh Elektrokabel
EP1236209B2 (fr) 1999-11-30 2014-04-09 PRYSMIAN Kabel und Systeme GmbH Cable electrique a isolation en caoutchouc ethylene-propylene dur

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB688185A (en) * 1951-12-07 1953-02-25 Liverpool Electric Cable Compa Improvements in or relating to electric cables
FR1445624A (fr) * 1965-05-31 1966-07-15 Comp Generale Electricite Câble électrique résistant aux hautes températures et au rayonnement nucléaire
US3325589A (en) * 1965-11-01 1967-06-13 Dow Chemical Co Thermal barriers for electric cables
US3344228A (en) * 1964-11-19 1967-09-26 Thermal barriers for electric cables
FR2034609A1 (fr) * 1969-03-03 1970-12-11 Dow Chemical Co
CH517994A (de) * 1965-03-10 1972-01-15 Atomic Energy Commission Verfahren zum Isolieren eines elektrischen Leiters
DE2614195A1 (de) * 1976-04-02 1977-10-20 Kabel Metallwerke Ghh Verfahren zur herstellung einer waermebestaendigen elektrischen leitung

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB688185A (en) * 1951-12-07 1953-02-25 Liverpool Electric Cable Compa Improvements in or relating to electric cables
US3344228A (en) * 1964-11-19 1967-09-26 Thermal barriers for electric cables
CH517994A (de) * 1965-03-10 1972-01-15 Atomic Energy Commission Verfahren zum Isolieren eines elektrischen Leiters
FR1445624A (fr) * 1965-05-31 1966-07-15 Comp Generale Electricite Câble électrique résistant aux hautes températures et au rayonnement nucléaire
US3325589A (en) * 1965-11-01 1967-06-13 Dow Chemical Co Thermal barriers for electric cables
FR2034609A1 (fr) * 1969-03-03 1970-12-11 Dow Chemical Co
DE2614195A1 (de) * 1976-04-02 1977-10-20 Kabel Metallwerke Ghh Verfahren zur herstellung einer waermebestaendigen elektrischen leitung

Also Published As

Publication number Publication date
DE2810986A1 (de) 1979-09-13
BR7901457A (pt) 1979-10-09

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): CH FR GB IT SE

17P Request for examination filed
STAA Information on the status of an ep patent application or granted ep patent

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18R Application refused

Effective date: 19811118

RIN1 Information on inventor provided before grant (corrected)

Inventor name: FISCHER, BERND

Inventor name: KNOCH, ROLAND