公开(公告)号：US10886035B2

公开(公告)日：2021-01-05

申请号：US16643716

申请日：2017-09-04

Applicant: Prysmian S.p.A. ,  Politecnico Di Milano

Inventor： Rodolfo Sica ,  Dario Bartolini ,  Attilio Citterio

IPC: H01B9/02 ,  H01B3/44 ,  H01B3/00 ,  H01B7/00

Abstract: The present invention relates to an energy cable comprising a cable core comprising an electric conductor and a crosslinked electrically insulating layer, wherein the cable core further comprises a microporous material having a bimodal pore volume distribution with a first peak of the distribution having a maximum at a pore diameter value within the range 5.5-6.5 Å and a second peak of the distribution having a maximum at a pore diameter value within the range 7.5-8.5 Å, the maximum values of the first and the second peak corresponding to an incremental pore volume of at least 4×10−3 cm3/g. The present invention also relates to a method for extracting methane crosslinking by-products from a crosslinked electrically insulating layer of an energy cable.

公开(公告)号：US10325694B2

公开(公告)日：2019-06-18

申请号：US15030292

申请日：2013-10-23

Applicant: PRYSMIAN S.P.A.

Inventor： Rodolfo Sica ,  Pietro Richard Anelli

IPC: H01B9/00 ,  H01B7/00 ,  H01B3/00 ,  C01B39/46 ,  H01B13/00 ,  H01B13/22

Abstract: An energy cable includes, at least one cable core including an electric conductor, a crosslinked electrically insulating layer, and zeolite particles placed in the cable core. The zeolite particles are able to extract and absorb, very efficiently and irreversibly, the by-products deriving from the cross-linking reaction, so as to avoid space charge accumulation in the insulating material during cable lifespan. A method for extracting crosslinking by-products from a cross-linked electrically insulating layer of an energy cable core, which includes manufacturing the energy cable core containing zeolite particles, heating the energy cable core up to a temperature causing migration of the crosslinking by-products from the crosslinked electrically insulating layer; and then placing a metal screen around the energy cable core.

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：US10361010B2

公开(公告)日：2019-07-23

申请号：US15567829

申请日：2015-04-22

Applicant: PRYSMIAN S.P.A.

Inventor： Rodolfo Sica ,  Pietro Anelli

IPC: H01B9/02 ,  H01B7/00 ,  H01B3/00 ,  H01B3/30 ,  H01B13/00 ,  H01B13/22

Abstract: An energy cable comprising at least one cable core comprising an electric conductor, a crosslinked electrically insulating system comprising an inner semiconducting layer, an insulating layer and an outer semiconducting layer and zeolite particles placed between the electric conductor and the inner semiconducting layer of the insulating system. The zeolite particles are able to efficiently extract and irreversibly absorb the by-products deriving from the cross-linking reaction, so as to avoid space charge accumulation in the insulating material during cable lifespan. This allows to eliminate the high temperature, long lasting degassing process of the energy cable cores having a crosslinked insulating layer, or at least to reduce temperature and/or duration of the same, so as to increase productivity and reduce manufacturing costs.

公开(公告)号：US10930414B2

公开(公告)日：2021-02-23

申请号：US16791199

申请日：2020-02-14

Applicant: Prysmian S.p.A.

Inventor： Rodolfo Sica ,  Alessandro Rolla

IPC: H01B9/02 ,  H01B3/12 ,  H01B3/44 ,  H01B13/00

Abstract: An energy cable comprises at least one cable core comprising an electric conductor, a crosslinked electrically insulating layer, and particles of a zeolite system comprising at least a first zeolite and a second zeolite placed in the cable core. A method for extracting crosslinking by-products from a cross-linked electrically insulating layer of an energy cable core comprises manufacturing the energy cable core comprising particles of the above-said zeolite system, heating the energy cable core up to a temperature causing migration of the crosslinking by-products from the crosslinked electrically insulating layer, and placing a metal screen around the energy cable core.

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.