公开(公告)号：US09697927B2

公开(公告)日：2017-07-04

申请号：US14633454

申请日：2015-02-27

Applicant: PRYSMIAN S.p.A.

Inventor： Gabriele Perego ,  Rodolfo Sica

IPC: H01B7/17 ,  G02B6/44 ,  H01B7/32

CPC classification number: H01B7/17 ,  G02B6/4429 ,  G02B6/4433 ,  G02B6/4494 ,  H01B7/322

Abstract: A cable includes an indicating element for detecting the infiltration of water into the cable and a method using such indicating element.

公开(公告)号：US10770201B2

公开(公告)日：2020-09-08

申请号：US14899898

申请日：2013-06-27

Applicant: PRYSMIAN S.P.A.

Inventor： Gabriele Perego ,  Paolo Liboi

IPC: H01B7/02 ,  H01B7/282 ,  H01B13/26 ,  C23C4/06 ,  H01B1/02 ,  H01B7/14 ,  H01B9/00 ,  H01B7/04

Abstract: A method for manufacturing an electrical cable includes providing at least one core including an electrical conductor, and arranging at least one copper sheath around the at least one core. The arranging of the copper sheath includes providing at least one foil of copper having two opposite first edges; bending the foil of copper around the core until the first edges of the foil of copper are contacted with each other; welding the first edges of the foil of copper to each other to form a corresponding solder jointwelded joint; and deposing a copper coating on at least portions of the surface of the foil of copper at the welded joint. The deposing the copper coating is carried out by means of a thermal spray process.

公开(公告)号：US10297372B2

公开(公告)日：2019-05-21

申请号：US14687228

申请日：2015-04-15

Applicant: PRYSMIAN S.p.A.

Inventor： Gabriele Perego

IPC: H01B13/14

Abstract: A process for producing an energy cable including at least one electrically conductive core and at least one thermoplastic electrically insulating layer, includes the steps of: impregnating a thermoplastic material in subdivided solid form, having a melting enthalpy equal to or lower than 70 J/g, with a dielectric fluid to obtain an impregnated thermoplastic material; feeding the impregnated thermoplastic material in subdivided solid form to a single-screw extruder; and extruding the impregnated thermoplastic material onto the at least one electrically conductive core, so as to form the at least one thermoplastic electrically insulating layer, whereby the impregnated thermoplastic material is not subjected to any mechanical homogenization step in a molten state. Energy cables having a large amount of the dielectric fluid in the electrically insulting layer, e.g. higher than 10 wt %, are obtained without showing any morphological defects in the layer itself and any drawbacks in the extrusion process, even when the rotation speed of the extruder screw, and therefore, the cable production speed, are high (e.g. higher than 20 m/min for medium voltage cable).

公开(公告)号：US09851027B2

公开(公告)日：2017-12-26

申请号：US14903838

申请日：2014-07-08

Applicant: PRYSMIAN S.P.A.

Inventor： Pietro Anelli ,  Rodolfo Sica ,  Gabriele Perego ,  Carlos Alberto Ferreira Godinho

IPC: F16L11/08

CPC classification number: F16L11/08 ,  F16L11/083

Abstract: Submarine flexible pipe includes a metal flexible carcass, an inner polymeric liner arranged in a radially outer position with respect to the metal flexible carcass, a protective polymeric outer sheath and a mechanical armor structure arranged in a radially inner position with respect to the protective polymeric outer sheath, the mechanical armor structure being potentially exposed to water contact. The mechanical armor structure includes a pressure resistant armor and a tensile armor arranged in a radially outer position with respect to the inner polymeric liner. The mechanical armor structure includes a plurality of carbon steel elongated elements, each of the carbon steel elongated elements being coated by an aluminum cladding.

公开(公告)号：US09837183B2

公开(公告)日：2017-12-05

申请号：US15111346

申请日：2014-01-21

Applicant: PRYSMIAN S.P.A.

Inventor： Gabriele Perego ,  Roberto Candela ,  Donald Parris

IPC: H01B7/00 ,  H01B3/44 ,  C08K7/28 ,  H01B7/02

CPC classification number: H01B3/441 ,  C08K7/28 ,  H01B7/0275

Abstract: A high-voltage alternate current electric cable [is provided. In the electric cable,] having at least one metallic electric conductor is surrounded by at least one extruded insulating layer. The insulating layer includes from 1 wt % to 30 wt % of a void-containing filler. The filler is made of particles having an average diameter up to 50 pm dispersed in an insulating polymeric material.

公开(公告)号：US09892824B2

公开(公告)日：2018-02-13

申请号：US15034606

申请日：2013-11-11

Applicant: PRYSMIAN S.p.A.

Inventor： Gabriele Perego ,  Paolo Liboi

IPC: H01B7/28 ,  H01B7/282 ,  H01B7/14 ,  H01B9/00 ,  H01B9/02 ,  H01B13/22 ,  H01B13/26

CPC classification number: H01B7/2825 ,  H01B7/14 ,  H01B9/006 ,  H01B9/02 ,  H01B13/22 ,  H01B13/26 ,  Y02A30/14

Abstract: A method for manufacturing power cables may include: providing at least one insulated conductor; and/or arranging a water barrier around the at least one insulated conductor. Arranging the water barrier may include: providing foil having opposite edges; wrapping the foil around the at least one insulated conductor until the edges of the foil overlap; fastening the overlapped edges of the foil to each other with bonding agent to form a corresponding foil seam; and/or depositing a metal coating on the foil at the seam by a thermal spray process. A power cable may include: at least one insulated conductor; at least one first water barrier surrounding the at least one insulated conductor, the at least one first water barrier being wrapped foil having edges overlapped and fastened by bonding agent, the overlapped edges and bonding agent forming a foil seam; and/or a thermal sprayed metal coating on the seam.