EP1469484A1 - Verbundkabel mit einem faseroptischen Element. - Google Patents

Verbundkabel mit einem faseroptischen Element. Download PDF

Info

Publication number
EP1469484A1
EP1469484A1 EP04300188A EP04300188A EP1469484A1 EP 1469484 A1 EP1469484 A1 EP 1469484A1 EP 04300188 A EP04300188 A EP 04300188A EP 04300188 A EP04300188 A EP 04300188A EP 1469484 A1 EP1469484 A1 EP 1469484A1
Authority
EP
European Patent Office
Prior art keywords
sheath
screen
composite cable
polymeric material
optical fiber
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.)
Granted
Application number
EP04300188A
Other languages
English (en)
French (fr)
Other versions
EP1469484B1 (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 comprising a fiber optic element.
  • Document EP 0 825 465 thus discloses an energy and telecommunications, called composite cable, comprising a conductor electrical and a fiber optic element in the form of a metal tube comprising at least one optical fiber as an extension in the tube.
  • the steel tube is inscribed substantially in a plane.
  • This tube as well as the optical fibers have sinusoidal ripples substantially parallel to this plane. If the cable is twisted, the tube supports thanks to the undulations of the elongations without breaking and the fibers are released from mechanical constraints.
  • the fiber optic element is arranged parallel to the axis longitudinal of the cable between a metallic screen, for example made of lead covering the electrical conductor and a layer of electrical insulation, extruded polymer.
  • This layer is a multifunctional sheath: it also serves mechanical protection corrosion protection and ensures the cohesion of the whole.
  • the polymer does not come fill the spaces 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, by rupture of the sheath for example, these spaces are preferential paths for the water which will flow along the axis longitudinal.
  • 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 envelope provides better protection against corrosion.
  • the polymeric material of the sheath will lodge more easily in small angles and thus significantly reduce voids of material, further strengthening the fight against corrosion of the tube and the screen.
  • the temperature of use of the polymeric material is high, for example between 150 ° C and 200 ° C.
  • the tube according to the invention being placed in the head of extruder, the polymeric material of its envelope is heated which makes it adherent with the polymeric material of the sheath.
  • the envelope of the tube can also be produced by extrusion.
  • the cable also comprises a layer of adhesive covering the outer surface of the screen in order to reinforce the attachment between the sheath and the screen and to decrease the attack time by injections in particular and therefore the extent of corrosion at the screen.
  • this layer of adhesive ensures the connection between the screen and the polymeric envelope of the sheath.
  • the polymeric material of the envelope of the tube may be substantially identical to the polymeric material of the sheath, for optimized material compatibility.
  • the screen is metal-based chosen from aluminum and copper and polymeric materials from the envelope and the sheath are made of polyethylene and preferably of high density polyethylene (HDPE).
  • HDPE high density polyethylene
  • the cable may include in addition an anticorrosion layer covering the adhesive layer and in a extruded polymeric material substantially identical to the material polymer extruded from the sheath.
  • the tube and said at least one optical fiber according to the invention can have undulations along said cable substantially parallel to the axis longitudinal of the cable, to obtain the technical advantages already described.
  • the corrugations can be made after the manufacture of the envelope of the tube.
  • a sheath 5 serving as an electrical insulation layer and mechanical protection, surrounds the anticorrosion layer 4 and is in one identical extruded polymeric material, such as high polyethylene density, for example 4 to 5 mm thick on average.
  • a fiber optic element 6 which is a coated metal tube containing a plurality of optical fibers.
  • the metal tube 61 is for example made of stainless steel and by example about 2 mm wide.
  • This tube 61 is coated, for example by extrusion, with an envelope 62 protective, in a polymeric material compatible with the material polymer 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 arranged substantially parallel to the longitudinal axis Z and preferably as close as possible to the interior of the cable 10 in order to comply with the normalization criteria for sheath thickness 5 with a minimum of material used.
  • the sheath 5 is preferably eccentric: the thickness e1 of the sheath in the part located above the fiber optic element 6 is substantially equal to the thickness e2 of the sheath in the opposite part with respect to the axis Z.
  • the optical fiber element 6 can contain for example four FO optical fibers.
  • the optical fiber element 6, and more precisely the metal tube coated by the casing 62 has corrugations 63, for example sinusoidal and parallel to the longitudinal axis Z. Inside the metal tube, each optical fiber (not shown) also has undulations (not shown) which substantially follow the corrugations of the coated tube but are less in amplitude. The mechanical stresses on the fibers are thus limited.
  • the optical fiber element 6 is placed on this last layer 4 and placed in the extruder head.
  • the polyethylene used easily binds with the polyethylene of the casing 62 of the metal tube 61 and with the polyethylene of the layer anticorrosion 4 in particular in 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 fiber element optics 6 is thus placed on the glue or, in the absence of glue, on the screen.
  • the sheath 5 also acts as a layer of anticorrosion for screen 5. This variant requires only one step polyethylene extrusion.
  • the composite cable according to the invention can comprise a plurality fiber optic elements according to the invention.
  • the composite cable can be single conductor or Multicore.
  • the composite cable can be a terrestrial or submarine cable.
  • the thickness of the sheath can be chosen according to the criteria of standardization in force.
  • the composite cable may include other layers above sheath.
  • the invention can also be applied when the screen is based on lead and polyvinyl chloride sheath. We will then adapt the material of envelope it accordingly.

Landscapes

  • Communication Cables (AREA)
  • Insulated Conductors (AREA)
  • Glass Compositions (AREA)
  • Ropes Or Cables (AREA)
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 true EP1469484A1 (de) 2004-10-20
EP1469484B1 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 (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007096775A2 (en) * 2006-02-21 2007-08-30 Nexans Fault detection system
FR2980273A1 (fr) * 2011-09-15 2013-03-22 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
US9659680B2 (en) 2011-04-12 2017-05-23 Ticona Llc Composite core for electrical transmission cables
US10676845B2 (en) 2011-04-12 2020-06-09 Ticona Llc Continuous fiber reinforced thermoplastic rod and pultrusion method for its manufacture

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR112013025588A2 (pt) 2011-04-12 2016-12-27 Ticona Llc cabo umbilical para uso em aplicações submarinas
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

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0539915A1 (de) * 1991-11-01 1993-05-05 Alcatel Stk A/S Starkstromkabel mit eingelegten Lichtwellenleitern

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0539915A1 (de) * 1991-11-01 1993-05-05 Alcatel Stk A/S Starkstromkabel mit eingelegten Lichtwellenleitern

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007096775A2 (en) * 2006-02-21 2007-08-30 Nexans Fault detection system
WO2007096775A3 (en) * 2006-02-21 2007-12-27 Nexans Fault detection system
US8005324B2 (en) 2006-02-21 2011-08-23 Nexans Fault detection system
US9659680B2 (en) 2011-04-12 2017-05-23 Ticona Llc Composite core for electrical transmission cables
US10676845B2 (en) 2011-04-12 2020-06-09 Ticona Llc Continuous fiber reinforced thermoplastic rod and pultrusion method for its manufacture
FR2980273A1 (fr) * 2011-09-15 2013-03-22 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

Also Published As

Publication number Publication date
DE602004007061T2 (de) 2008-02-21
ATE365369T1 (de) 2007-07-15
DE602004007061D1 (de) 2007-08-02
FR2853988A1 (fr) 2004-10-22
EP1469484B1 (de) 2007-06-20

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