Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
  • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
  • H01B1/20—Conductive material dispersed in non-conductive organic material
  • H01B1/24—Conductive material dispersed in non-conductive organic material the conductive material comprising carbon-silicon compounds, carbon or silicon
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
  • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
  • H01B1/04—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of carbon-silicon compounds, carbon or silicon
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
  • H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
  • H01B5/08—Several wires or the like stranded in the form of a rope
  • H01B5/10—Several wires or the like stranded in the form of a rope stranded around a space, insulating material, or dissimilar conducting material
  • H01B5/102—Several wires or the like stranded in the form of a rope stranded around a space, insulating material, or dissimilar conducting material stranded around a high tensile strength core
  • H01B5/105—Several wires or the like stranded in the form of a rope stranded around a space, insulating material, or dissimilar conducting material stranded around a high tensile strength core composed of synthetic filaments, e.g. glass-fibres
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
  • H01B9/00—Power cables
  • H01B9/006—Constructional features relating to the conductors

Definitions

• the invention relates to a cable for the transmission of electricity, in particular air, comprising a set of composite rods.
• Overhead cables with composite central rods forming a mechanical support of conductive wires wound around rods made of fibers pultruded in a resin are known.
• the unit rods are formed of carbon fibers pultruded in a resin, for example an epoxy resin, and are covered with a metal sheet intended to form a protective buffer layer of the rod, so as to to increase its resistance to curvature and shocks, and also to avoid deterioration of the resin caused by heat.
• the metal foil may be aluminum.
• Another advantage of such an aluminum cover sheet may be to provide electrical conduction avoiding significant differences in potential between the pultruded composite rod or the composite pultruded rods and the surrounding conductors son (s).
• a ring having an inner portion and an outer portion.
• the inner portion is formed of fibers in a resin and the outer portion is also formed of fibers in a resin in which thermally conductive particles, for example aluminum, are added, for example with a content of 20 to 50% by weight. , or carbon black and / or carbon nanotubes, for example at a rate of less than 3%.
• the object of the invention is to provide electrical conduction avoiding large potential differences between the pultruded composite rod or the pultruded composite rods and the conductive wires that surround it, by means of a more economical material than aluminum and easy to manufacture.
• the invention proposes a power transmission cable comprising at least one composite central rod formed of fibers embedded in a resin and around which are arranged metal conductor wires, said rod being coated with a coating layer constituted of carbon black and / or carbon nanotubes embedded in a resin, characterized in that the content of carbon black and / or carbon nanotubes is such that the resistivity of said coating layer is less than or equal to 10 + 5 ⁇ . ⁇ .
• Such a coating layer can be extruded at the same time as the pultrusion of the rod and reduces the manufacturing steps.
• the resistivity of said coating layer is substantially equal to 10 +5 ⁇ . ⁇ .
• said coating layer consists solely of carbon black and / or carbon nanotubes embedded in a resin
• said coating layer comprises 4 to 8% by weight of carbon nanoparticles.
• said coating layer comprises 4% by weight of carbon nanoparticles.
• said coating layer comprises 20 to 30% by weight of carbon black.
• said coating layer comprises substantially 20% by weight of carbon black.
• said resin of said coating layer is epoxy resin or polyurethane
• Said ring is advantageously made of carbon fibers pultruded in an epoxy resin.
• Said conductive son are preferably aluminum or aluminum alloy.
• Figure 1 is a cross-sectional view of a cable according to the invention, according to a first embodiment.
• Figure 2 is a cross-sectional view of a cable according to the invention, according to a second embodiment.
• a power transmission cable comprises a composite central rod 1 formed of embedded fibers, preferably carbon fibers pultruded in a resin, preferably an epoxy resin, around which metal conductor wires 2 are arranged, 3, preferably aluminum or aluminum alloy.
• the cable comprises a first inner layer of conductive wires 2 of trapezoidal section and two outer layers of wires 3 of Z-shaped section wound in a reverse direction.
• Any combination of conductive wires of circular, trapezoidal and / or Z-shaped section may be used according to design considerations.
• the ring 1 is coated with a coating layer 6, which consists of carbon black and / or carbon nanotubes embedded in a resin, preferably epoxy or polyurethane, with a content sufficient to ensure electrical conduction between the rod 1 and the adjacent metallic conductor wires 2.
• a coating layer 6 which consists of carbon black and / or carbon nanotubes embedded in a resin, preferably epoxy or polyurethane, with a content sufficient to ensure electrical conduction between the rod 1 and the adjacent metallic conductor wires 2.
• the resistivity of the coating layer 6 is less than or equal to 10 +5 ⁇ . ⁇ and advantageously substantially equal to 10 +5 ⁇ m.
• the coating layer comprises 4 to 8% by weight of carbon nanoparticles, and preferably substantially 4% by weight.
• the coating layer comprises 20 to 30% by weight of carbon black, and preferably substantially 20% by weight.
• a power transmission cable in accordance with the invention comprises a set central 1 composite rods 1A, 1B formed of fibers embedded in a resin, preferably carbon fibers pultruded in an epoxy resin, and around which are wound metal conductors son 2, 3, preferably aluminum or alloy of aluminum.
• the set of unit rods 1 is coated with a first layer 4 and each unit ring 1A, 1B is covered with a second layer 5A, 5B.
• This set of unit rods 1 comprises a central unit ring 1 A arranged on the longitudinal axis of the cable and around which are strung several other single rods 1 B, for example six in number.
• the central unitary ring 1A advantageously has a diameter of between 1 and 10 mm, preferably substantially equal to 4 mm, and the other unitary rods 1B advantageously have a diameter also between 1 and 10 mm, preferably substantially equal to 5.5 mm.
• the second layers 5A, 5B consist of carbon black and / or carbon nanotubes embedded in a resin, preferably epoxy, with a content sufficient to ensure electrical conduction between the rods and the first layer 4 is metallic preferably aluminum.
• the resistivity of the second coating layers 5A, 5B is less than or equal to 10 +5 ⁇ . ⁇ and advantageously substantially equal to 10 +5 ⁇ . ⁇ .
• the second coating layers comprise 4 to 8% by weight of carbon nanoparticles, and preferably substantially 4% by weight.
• the second coating layers comprise 20 to 30% by weight of carbon black, and preferably substantially 20% by weight.
• the second layers 5A, 5B have a thickness of less than 1 mm, preferably substantially equal to 0.3 mm.

Landscapes

• Physics & Mathematics (AREA)
• Chemical & Material Sciences (AREA)
• Dispersion Chemistry (AREA)
• Spectroscopy & Molecular Physics (AREA)
• Non-Insulated Conductors (AREA)
• Ropes Or Cables (AREA)
• Insulated Conductors (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Related Child Applications (2)

Publications (1)

Family

ID=51570633

Family Applications (2)

Family Applications Before (1)

Country Status (4)

Families Citing this family (4)

Family Cites Families (6)

• 2014
  • 2014-06-30 FR FR1456112A patent/FR3023054B1/fr active Active
• 2015
  • 2015-06-03 US US15/323,241 patent/US20170133117A1/en not_active Abandoned
  • 2015-06-03 EP EP17152044.8A patent/EP3270385A1/de not_active Withdrawn
  • 2015-06-03 EP EP15733793.2A patent/EP3161833A1/de not_active Withdrawn
  • 2015-06-03 WO PCT/FR2015/051470 patent/WO2016001499A1/fr active Application Filing

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