7 results about "Submarine power cable" patented technology

A submarine connection box for connecting a system of submarine power cables, each including at least one submarine power cable core, the submarine connection box including: a casing, the casing having N first openings configured to receive a respective submarine power cable of a first set of N submarine power cables, N being an integer equal to or greater than 1, the casing having K second openings configured to receive a respective submarine power cable of a second set of K submarine power cables, K being an integer greater than 1, a termination box arranged inside the casing, the termination box having a housing including a first group of openings, and a second group of openings, each of the first group of openings being configured to receive a respective submarine power cable core of the first set of N submarine power cables, and each of the second group of openings being configured to receive a respective submarine power cable core of the second set of K submarine power cables, and L sets of connectors arranged in the termination box, L being an integer equal to the number of electrical phases or poles of the system of submarine power cables, wherein for each of the L sets, the connectors are electrically interconnected with each other and configured to connect submarine power cable cores of corresponding electrical phases or poles of the first set of N submarine power cables and the second set of K submarine power cables.

A submarine power cable comprises a cable core, a pipeline, a filling layer and a protective layer, and the cable core comprises a water-blocking conductor, a conductor shielding layer, an insulating layer, an insulating shielding layer, a buffer layer, a lead sheath layer and a semi-conductive sheath layer which are sequentially coated from inside to outside; the hollow pipeline is arranged on the outer side of the cable core along the radial direction; the filling layer coats the surfaces of the cable core and the pipeline; the protective layer comprises a water-blocking binding tape layer, a corrugated aluminum sheath layer, a polyethylene sheath layer, a steel wire armor layer and a polypropylene sheath layer which are sequentially coated from inside to outside; and the water-blocking binding tape layer is coated on the surface of the filling layer. According to the submarine power cable provided by the embodiment of the invention, redundancy design is carried out in the aspects of protection and water blocking, so that the external force damage resistance of the submarine power cable is improved; and the pipeline is arranged in the submarine power cable, so that power transmission is realized, fluid substances such as water, oil and gas can be conveyed at the same time, and multi-functionalization of the submarine power cable is realized.

The present invention relates to the technical field of subsea power cables. More specifically, the invention relates to a method of manufacturing a high voltage power cable comprising a cable core surrounded by an insulation system, wherein the cable core comprises conductor elements and a water blocking composition, wherein the method comprises the steps of stranding the conductor elements to obtain a stranded bundle of conductor elements, introducing the water blocking composition in the voids left in the stranded bundle of conductor elements, degassing of the water blocking composition, obtaining the cable core, and surrounding the insulation system coaxially around the cable core. The present invention further relates to a high voltage power cable produced by the method according to the invention and a use of the high voltage power cable.

A power cable comprising a joint, wherein a first conductor end (33) comprising a first tension element (35) is electrically and mechanically connected to a second conductor end (33') with a second tension element (35'), wherein the joint comprises a compression ferrule (10) with a longitudinal aperture, wherein the compression ferrule comprises at least two compression zones (20) that have been compressed respectively onto the first conductor end (33) and the second conductor end (33') inserted into the aperture of the compression ferrule from opposite sides is disclosed.

An offshore system including: a dynamic submarine power cable, a bend stiffener having a lower end and a top end, the bend stiffener having a central channel extending from the lower end to the top end, the central channel receiving the dynamic submarine power cable with a radial spacing between an inner surface of the central channel and an outer surface of the dynamic submarine power cable along the length of the dynamic submarine power cable arranged in the bend stiffener, the radial spacing forming a longitudinal water channel between the bend stiffener and the dynamic submarine power cable, and an offshore structure tube connected to the bend stiffener, wherein the offshore structure tube has an inner tube channel in fluid communication with the longitudinal water channel, and wherein A) the offshore structure tube has a through-opening extending from the inner tube channel through a wall of the offshore structure tube to enable water flowing from the lower end through the bend stiffener to exit the offshore structure tube via the through-opening to provide water cooling of the dynamic submarine power cable in the bend stiffener, or B) the bend stiffener has a radial through-opening arranged within ¼ of a total axial length of the bend stiffener, defined by a distance between the lower end and the top end, from the top end to enable water flowing from the lower end through the bend stiffener to exit the bend stiffener via the radial through-opening to provide water cooling of the dynamic submarine power cable in the bend stiffener.

The present invention relates to the technical field of subsea power cables. More specifically, the invention relates to a subsea power cable comprising at least one cable core comprising a bundle of metal wires and more than one layer of a cured two-component hardening composition, wherein the more than one layer of the cured two-component hardening composition is intermittently provided along the longitudinal direction of the power cable. The present invention further relates to a method of manufacturing the power cable according to the invention.

A multiphase submarine power cable (1) comprising: a plurality of power cores (3, 5, 7) arranged in a twisted configuration, and a bend sensor (15) comprising: an elongated elastic element (15a), and a plurality of fiber Bragg grating fibers, FBG, (15b), each FBG fiber (15b) extending axially along the elongated element (15a) at a radial distance from the center of the elongated element (15a); wherein the elongated element (15a) extends between the twisted power cores (3, 5, 7) along a central axis of the multiphase submarine power cable (1).