Abstract:
Es wird ein Bauwerk zur Errichtung an der Oberfläche von Gewässern, insbesondere auf offener See, vorgeschlagen. Das Bauwerk umfasst wenigstens einen schwimmfähigen Auftriebskörper nach Art einer sogenannten "Tension Leg Platform", welcher mittels entgegen seiner Auftriebskraft wirksamer Spannmittel am Boden des Gewässers verspannbar ist, sowie wenigstens ein Gebäude, welches an dem Auftriebskörper angeordnet ist. Insbesondere im Hinblick auf eine möglichst einfache und kostengünstige Errichtung eines solchen Bauwerks sieht die Erfindung vor, dass das Gebäude seinerseits schwimmfähig und im schwimmenden Zustand an dem Auftriebskörper anordbar ist, wobei es beispielsweise von einer Tragkonstruktion des Auftriebskörpers getragen oder seinerseits entgegen seines Auftriebs gegen den Auftriebskörper verspannt sein kann. Die Erfindung betrifft ferner ein Verfahren zur Errichtung eines solchen Bauwerks auf offener See.
Abstract:
The invention concerns an elongate, flexible line (16) for providing a linkage between a first structure (10) and a second structure (14). The line may be a mooring line. It has an elongate tubular sheath (18) of braided material, the sheath being able to change reversibly and repeatedly in length and its braided structure being such that an increase in length of the sheath is accompanied by a decrease in its lateral dimension. Within the sheath is an impervious flexible bladder (28). The bladder defines a fluid-containing internal chamber (36) which is acted on by the sheath so that the volume of the chamber varies with the length of the sheath. A pressure source (42) is arranged to pressurise the chamber. A passage (40) communicates with the chamber and incorporates a restriction (44). In operation the pressurised bladder urges the sheath to expand laterally and so to contract in length. An increase in extension of the sheath causes fluid to be exhausted from the chamber through the restriction, increasing chamber pressure and providing a damping force opposed to the sheath's extension.
Abstract:
Strangförmiges Element, insbesondere Kabel, Seil oder stabförmiges Bauteil, das sich in einer Längsrichtung erstreckt und eine maximale Querabmessung sowie eine Mantelfläche aufweist, welche für ein verbessertes Anströmverhalten eine Querschnittsform mit sich in Längsrichtung variierende Querabmessung ausbildet.
Abstract:
A connection substation (100) for a plurality of wave energy converters (WEC 1 , WEC 2 ) being part of a wave power station (101), said connection substation comprising at least one transformer (102) and at least one connecting device (103) for electrically connecting a plurality of input power cables (C 1 , C 2 ) to a common output cable (C 3 ), wherein the connection substation (100) is provided with at least one buoyant body portion (104) for providing a buoyancy force and at least one fastening device (105) for securing at least one mooring line (106) connected to an anchor (107), wherein the at least one fastening device (105) is disposed in the vicinity of the bottom end (111) of the connection substation at a distance from an upper end (113) of the buoyant body portion (104), wherein the at least one connecting device (103) is disposed in a waterproof compartment in the connection substation (100), and wherein each of the plurality of input power cables (C 1 , C 2 ) are run so that at least a portion of the cable extends up to a level at least 2 meters above the design waterline (A) of the connection substation.
Abstract:
The invention relates to a floating wind turbine assembly (1), comprising a floating platform (2) and a wind turbine (3) arranged on top of the floating platform, the wind turbine having a mast (4) with a mast axis (X), of which a lower end (5) is connected to the floating platform, and a nacelle (6) arranged on top of the mast, wherein the floating platform is connected to a seafloor (7) with a plurality of tensioned mooring lines (8), wherein the mooring lines each comprise a mooring line axis (A) extending in a longitudinal direction of the mooring line, wherein the mooring line axes intersect each other at a crossing position (9) on the mast axis and at an elevation level at or above the nacelle, as well as a method for mooring such a floating wind turbine assembly.
Abstract:
A fairing (1) for improving fluid flow around a circular-cylindrical object comprises a first fairing-element (11) and a second fairing-element (12), which are releasable relative to one another. The fairing-elements are easy to manufacture, compactly stackable, and easy to install around the object. In installed condition, the first fairing-element and the second fairing-element are mutually connected in circumferential direction of the fairing, while forming a twin-fin fairing, which reduces vortex-induced vibrations around the object, while providing favourable flow resistance, and without performing galloping motions.
Abstract:
An offshore drilling unit includes a main body configured to be bottom supported in shallow water. Also included is an anchoring assembly secured to a sea floor. Further included is a tensioning system operatively coupled to the main body and the anchoring assembly, wherein the tensioning system is configured to apply a downward force on the main body to resist ice loads imposed on the offshore drilling unit.
Abstract:
A system for harvesting, storing, and generating energy includes a subsurface structure supporting machinery to convert received energy into potential energy, store that potential energy, and at a later time convert that potential energy into electrical energy. The system includes one or more buoyant chambers that support the subsurface structure and are maintained with an internal that is approximately equal to the ambient pressure at their deployed depth. The system is anchored to the seafloor with one or more mo lines. Suspended from the subsurface structure are one or more weights that are hoisted up or lowered down by one or more winches The one or more winches comprise a spooling drum, and one or more motors and/or one or more generators or one or more motor/generators.
Abstract:
The invention relates to underwater support systems for installations having buoyancy elements in bodies of water, and either counterweights or anchors on or in the floor of the body of water, and traction means between the buoyancy elements and the counterweights or anchors. The underwater support systems are characterized in particular by secure positioning of the installations and simple implementation. To this end, at least three buoyancy elements (2) coupled to each other by means of connecting elements are each connected to one counterweight (3) or anchor by means of a tensioning means. When no force acts on the installation, each buoyancy element is disposed vertically above a counterweight or anchor. Furthermore, the vector of the buoyancy force of each buoyancy element acting on the buoyancy element is so great that even under the maximum load, the tensioning means (4) between the buoyancy element and the counterweight or anchor are always under tension, and the tensile forces always act simultaneously on all of the buoyancy elements. The counterweights or anchors secure the location and the position of the underwater support system having the installation.