EP1469484A1 - Câble composite comportant un élément à fibre optique - Google Patents
Câble composite comportant un élément à fibre optique Download PDFInfo
- 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
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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)
- Ropes Or Cables (AREA)
- Glass Compositions (AREA)
Abstract
Description
- un coeur entouré par un écran métallique,
- une gaine entourant l'écran, en un matériau polymérique isolant électrique et extrudé,
- un élément à fibre optique comprenant un tube métallique contenant au moins une fibre optique et disposé entre l'écran et la gaine,
- la figure 1 représente schématiquement une vue en coupe transversale d'un câble composite dans un mode de réalisation préféré de l'invention,
- la figure 2 représente schématiquement une vue en coupe transversale de l'élément à fibre optique inséré dans le câble composite de la figure 1,
- la figure 3 représente schématiquement une vue partielle longitudinale et en élévation du câble composite de la figure 1.
- un écran métallique 2, par exemple en aluminium, obtenu par extrusion ou contre-collé ou soudure, et par exemple de 0,2 à 2 mm d'épaisseur,
- de préférence une couche de colle extrudée 3, recouvrant la surface extérieure de l'écran 2, par exemple de 0,5 mm environ d'épaisseur,
- de préférence une couche anticorrosion 4 recouvrant la couche de colle 3, par exemple de 0,5 mm d'épaisseur, en un matériau polymérique électriquement isolant qui est de préférence un polyéthylène haute densité et est par exemple coextrudé avec la colle 3.
Claims (6)
- Câble composite (10) comprenant :un coeur (1) entouré par un écran métallique (2),une gaine (5) entourant l'écran, en un matériau polymérique isolant électrique et extrudé,un élément à fibre optique (6) comprenant un tube métallique (61) contenant au moins une fibre optique (FO) et disposé entre l'écran et la gaine caractérisé en ce que l'élément à fibre optique comprend une enveloppe (62) entourant le tube métallique et en un matériau polymérique compatible avec le matériau polymérique de la gaine et en ce qu'il comprend une couche de colle (3) recouvrant la surface extérieure de l'écran (2).
- Câble composite (10) selon la revendication 1 caractérisé en ce que le matériau polymérique de l'enveloppe (62) est sensiblement identique audit matériau polymérique de la gaine (5).
- Câble composite (10) selon l'une des revendications 1 ou 2 caractérisé en ce que l'écran (2) est à base de métal choisi parmi l'aluminium et le cuivre et en ce que les matériaux polymériques de l'enveloppe (62) et de la gaine (5) sont en polyéthylène.
- Câble composite (10) selon l'une des revendications 1 ou 2 caractérisé en ce que l'écran (2) est à base de métal choisi parmi l'aluminium et le cuivre et en ce que les matériaux polymériques de l'enveloppe (62) et de la gaine (5) sont en polyéthylène haute densité.
- Câble composite (10) selon l'une des revendications 1 à 4 caractérisé en ce qu'il comprend une couche anticorrosion (4) recouvrant la couche de colle et en un matériau polymérique extrudé sensiblement identique au matériau polymérique extrudé de la gaine (5).
- Câble composite (10) selon l'une des revendications 1 à 5 caractérisé en ce que, le câble ayant un axe longitudinal donné (Z), le tube (61) et ladite au moins fibre optique (FO) présentent chacun, le long dudit câble, des ondulations (63) sensiblement parallèles audit axe longitudinal.
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 (fr) | 2004-10-20 |
EP1469484B1 EP1469484B1 (fr) | 2007-06-20 |
Family
ID=32893403
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04300188A Expired - Lifetime EP1469484B1 (fr) | 2003-04-15 | 2004-04-08 | Câble composite comportant un élément à fibre optique |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1469484B1 (fr) |
AT (1) | ATE365369T1 (fr) |
DE (1) | DE602004007061T2 (fr) |
FR (1) | FR2853988A1 (fr) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007096775A2 (fr) * | 2006-02-21 | 2007-08-30 | Nexans | Systeme de detection de defauts |
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TW201303192A (zh) | 2011-04-12 | 2013-01-16 | Ticona Llc | 用於水下應用之臍管 |
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0539915A1 (fr) * | 1991-11-01 | 1993-05-05 | Alcatel Stk A/S | Câble composite à puissance |
-
2003
- 2003-04-15 FR FR0350109A patent/FR2853988A1/fr not_active Withdrawn
-
2004
- 2004-04-08 AT AT04300188T patent/ATE365369T1/de not_active IP Right Cessation
- 2004-04-08 DE DE602004007061T patent/DE602004007061T2/de not_active Expired - Lifetime
- 2004-04-08 EP EP04300188A patent/EP1469484B1/fr not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0539915A1 (fr) * | 1991-11-01 | 1993-05-05 | Alcatel Stk A/S | Câble composite à puissance |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007096775A2 (fr) * | 2006-02-21 | 2007-08-30 | Nexans | Systeme de detection de defauts |
WO2007096775A3 (fr) * | 2006-02-21 | 2007-12-27 | Nexans | Systeme de detection de defauts |
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 |
EP1469484B1 (fr) | 2007-06-20 |
ATE365369T1 (de) | 2007-07-15 |
FR2853988A1 (fr) | 2004-10-22 |
DE602004007061D1 (de) | 2007-08-02 |
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