EP1469484B1 - Verbundkabel mit einem faseroptischen Element. - Google Patents

Verbundkabel mit einem faseroptischen Element. Download PDF

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Publication number
EP1469484B1
EP1469484B1 EP04300188A EP04300188A EP1469484B1 EP 1469484 B1 EP1469484 B1 EP 1469484B1 EP 04300188 A EP04300188 A EP 04300188A EP 04300188 A EP04300188 A EP 04300188A EP 1469484 B1 EP1469484 B1 EP 1469484B1
Authority
EP
European Patent Office
Prior art keywords
composite cable
sheath
cable
screen
cladding
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 - Lifetime
Application number
EP04300188A
Other languages
English (en)
French (fr)
Other versions
EP1469484A1 (de
Inventor
Pierre Mirebeau
David Dubois
Laurent Moreau
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.)
Nexans SA
Original Assignee
Nexans 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 Nexans SA filed Critical Nexans SA
Publication of EP1469484A1 publication Critical patent/EP1469484A1/de
Application granted granted Critical
Publication of EP1469484B1 publication Critical patent/EP1469484B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01B9/00—Power cables
    • H01B9/005—Power cables including optical transmission elements

Definitions

  • the present invention relates to a composite cable having an optical fiber element.
  • the document EP 0 825 465 thus discloses a power and telecommunications cable, said composite cable, comprising an electrical conductor and a fiber optic element in the form of a metal tube having at least one optical fiber extending into the tube.
  • the tube made of steel, is inscribed substantially in a plane.
  • This tube and the optical fibers have sinusoidal type corrugations substantially parallel to this plane.
  • the tube In the case of twisting of the cable, the tube withstands the corrugations without breaking and the fibers are released from mechanical stresses.
  • the optical fiber element is disposed parallel to the longitudinal axis of the cable between a metal screen, for example lead coated over the electrical conductor and an electrical insulation layer, extruded polymer.
  • This layer is a multifunctional sheath: it also serves as a mechanical protection against corrosion and ensures the cohesion of the whole.
  • the polymer does not fill the gaps between the steel tube and the screen. This lack of material creates spaces extending along the longitudinal axis of the cable. In case of penetration of water, for example by rupture of the sheath, these spaces are preferential paths for the water which will flow along the longitudinal axis.
  • the flow promotes corrosion of the steel tube and ultimately that of the metal screen.
  • the object of the invention is to overcome the aforementioned problems by providing a composite cable protected against corrosion.
  • the tube casing provides better protection against corrosion.
  • the polymeric material of the sheath will be housed more easily in the small angles and thus significantly reduce the material voids, further reinforcing the fight against corrosion tube and screen.
  • the operating temperature of the polymeric material is high, for example between 150 ° C and 200 ° C.
  • the tube according to the invention being placed in the extruder head, the polymeric material of its envelope is heated which makes it adherent with the polymeric material of the sheath.
  • the casing of the tube can also be made by extrusion.
  • the cable further comprises a layer of adhesive covering the outer surface of the screen in order to reinforce the fastening between the sheath and the screen and to reduce the pitting attack time in particular and thus the extent of the corrosion in the screen. level of the screen.
  • this layer of adhesive provides the connection between the screen and the polymeric envelope of the sheath.
  • the polymeric material of the casing of the tube may be substantially identical to the polymeric material of the sheath, for optimized material compatibility.
  • the screen is based on a metal selected from aluminum and copper and the polymeric materials of the envelope and sheath are polyethylene and preferably high density polyethylene (HDPE).
  • HDPE high density polyethylene
  • the cable may further comprise an anti-corrosion layer covering the adhesive layer and an extruded polymeric material substantially identical to the extruded polymeric material of the sheath.
  • the tube and said at least one optical fiber according to the invention may have along said cable undulations substantially parallel to the longitudinal axis of the cable, to obtain the technical advantages already described.
  • the corrugations can be made after the manufacture of the casing of the tube.
  • FIG. 1 shows the cross-section of a composite cable 10 in a preferred embodiment of the invention, for example a cable, for example buried, of telecommunications and energy, for example at high voltage.
  • a sheath 5 serving as an electrical insulation and mechanical protection layer, surrounds the anticorrosive layer 4 and is made of an identical extruded polymeric material, such as high density polyethylene, and for example from 4 to 5 mm thick. on average.
  • an optical fiber element 6 which is a coated metal tube containing a plurality of optical fibers.
  • the metal tube 61 is for example stainless steel and for example wide by about 2 mm.
  • This tube 61 is coated, for example by extrusion, with a protective envelope 62 made of a polymeric material compatible with the polymeric material extruded from the sheath 5 and preferably identical, for example the high density polyethylene.
  • the thickness of the envelope 62 is for example of the order of 0.5 mm.
  • the optical fiber element 6 is disposed substantially parallel to the longitudinal axis Z and preferably as close as possible to the inside of the cable 10 in order to meet the thickness normalization criteria of the sheath 5 with a minimum of material used.
  • the sheath 5 is preferably eccentric: the thickness e1 of the sheath in the portion situated above the optical fiber element 6 is substantially equal to the thickness e2 of the sheath in the opposite part with respect to the Z axis.
  • the optical fiber element 6 may contain, for example, four optical fibers FO.
  • the optical fiber element 6, and more precisely the metal tube encased by the envelope 62, has corrugations 63, for example sinusoidal and parallel to the longitudinal axis Z. Inside the tube metal, each optical fiber (not shown) also has undulations (not shown) which substantially following the corrugations of the coated tube but are smaller in amplitude. The mechanical stresses on the fibers are thus limited.
  • the optical fiber element 6 is placed on the latter layer 4 and placed in the head of extruder.
  • the polyethylene used is easily bonded with the polyethene of the casing 62 of the metal tube 61 and with the polyethylene of the anticorrosion layer 4, especially in the zones A, A 'in the vicinity of this last layer 4 (see Figure 1).
  • the cable 10 does not include the anti-corrosion layer 2.
  • the optical fiber element 6 is thus placed on the adhesive or, in the absence of glue, on the screen.
  • the sheath 5 also acts as an anticorrosion layer for the screen 5. This variant only requires a single polyethylene extrusion step.
  • the composite cable according to the invention may comprise a plurality of optical fiber elements according to the invention.
  • the composite cable can be single-core or multicore.
  • the composite cable may be a terrestrial or underwater cable.
  • the thickness of the sheath can be chosen according to the standardization criteria in force.
  • the composite cable may include other layers above the sheath.
  • the invention can also be applied when the screen is based on lead and the sheath made of polyvinyl chloride. We will then adapt the material of the envelope accordingly.

Landscapes

  • Communication Cables (AREA)
  • Insulated Conductors (AREA)
  • Ropes Or Cables (AREA)
  • Glass Compositions (AREA)

Claims (6)

  1. Kompositkabel (10), umfassend:
    - eine von einer Metallabschirmung (2) umgebene Seele (1),
    - eine die Abschirmung umgebende Umhüllung (5) aus einem elektrisch isolierenden und extrudiertem Polymerwerkstoff,
    - ein Glasfaserelement (6), eine Metallröhre (61) umfassend, die mindestens eine Glasfaser (GF) enthält und zwischen der Abschirmung und der Umhüllung angeordnet ist, dadurch gekennzeichnet, dass das Glasfaserelement einen die Metallröhre umgebenden Mantel (62) umfasst und aus einem mit dem Polymerwerkstoff der Umhüllung kompatiblen Werkstoff und dadurch, dass es eine die Außenfläche der Abschirmung (2) bedeckende Klebstofflage (3) umfasst.
  2. Kompositkabel (10) nach Anspruch 1, dadurch gekennzeichnet, dass der Polymerwerkstoff des Mantels (62) mit dem besagten Polymerwerkstoff der Umhüllung (5) etwa identisch ist.
  3. Kompositkabel (10) nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass die Abschirmung (2) auf Basis von Metall ist, ausgewählt aus Aluminium und Kupfer und dadurch, dass die Polymerwerkstoffe des Mantels (62) und der Umhüllung (5) aus Polyethylen sind.
  4. Kompositkabel (10) nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass die Abschirmung (2) auf Basis von Metall ist, ausgewählt aus Aluminium und Kupfer und dadurch, dass die Polymerwerkstoffe des Mantels (62) und der Umhüllung (5) aus hochdichtem Polyethylen sind.
  5. Kompositkabel (10) nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass es eine Antikorrosionsschicht (4) umfasst, die die Klebstofflage bedeckt und aus einem extrudierten Polymerwerkstoff, der mit dem extrudierten Polymerwerkstoff der Umhüllung (5) etwa identisch ist.
  6. Kompositkabel (10) nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass, wobei das Kabel eine gegebene Längsachse (Z) aufweist, die Röhre (61) und die besagte mindestens eine Glasfaser (GF) jeweils entlang des besagten Kabels etwa parallele Wellen (63) zur besagten Längsachse aufweisen.
EP04300188A 2003-04-15 2004-04-08 Verbundkabel mit einem faseroptischen Element. Expired - Lifetime EP1469484B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0350109 2003-04-15
FR0350109A FR2853988A1 (fr) 2003-04-15 2003-04-15 Cable composite comportant un element a fibre optique

Publications (2)

Publication Number Publication Date
EP1469484A1 EP1469484A1 (de) 2004-10-20
EP1469484B1 true EP1469484B1 (de) 2007-06-20

Family

ID=32893403

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04300188A Expired - Lifetime EP1469484B1 (de) 2003-04-15 2004-04-08 Verbundkabel mit einem faseroptischen Element.

Country Status (4)

Country Link
EP (1) EP1469484B1 (de)
AT (1) ATE365369T1 (de)
DE (1) DE602004007061T2 (de)
FR (1) FR2853988A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8921692B2 (en) 2011-04-12 2014-12-30 Ticona Llc Umbilical for use in subsea applications
US9190184B2 (en) 2011-04-12 2015-11-17 Ticona Llc Composite core for electrical transmission cables

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO324585B1 (no) * 2006-02-21 2007-11-26 Nexans Feildeteksjons-system
US10676845B2 (en) 2011-04-12 2020-06-09 Ticona Llc Continuous fiber reinforced thermoplastic rod and pultrusion method for its manufacture
FR2980273B1 (fr) * 2011-09-15 2014-06-20 Chemins De Fer Francais S N C F Soc Nat Des Dispositif de detection d'une coupure d'un cable electrique et systeme de distribution de courant, notamment ferroviaire, correspondant
CN108766646A (zh) * 2018-03-23 2018-11-06 东莞市晟钫实业有限公司 一种hdmi光电复合线缆及其制造方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO173847C (no) * 1991-11-01 1994-02-09 Alcatel Stk As Kompositt kabel

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8921692B2 (en) 2011-04-12 2014-12-30 Ticona Llc Umbilical for use in subsea applications
US9190184B2 (en) 2011-04-12 2015-11-17 Ticona Llc Composite core for electrical transmission cables

Also Published As

Publication number Publication date
FR2853988A1 (fr) 2004-10-22
EP1469484A1 (de) 2004-10-20
ATE365369T1 (de) 2007-07-15
DE602004007061T2 (de) 2008-02-21
DE602004007061D1 (de) 2007-08-02

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