摘要:
There is provided a spar-type floating offshore wind power generation facility that suppresses a reduction in power generation efficiency caused by tilting of a tower, suppresses rotational motion (yaw motion) around a vertical axis, prevents a ship from coming into contact with a mooring cable, and, at the same time, appropriately holds the tilted posture state of the tower. A floating offshore wind power generation facility 1 includes a floating body 2, a mooring cable 3, a tower 4, and a windmill 5 installed at the top of the tower 4, the windmill 5 including a nacelle 6 and a plurality of blades 7. The rotation axis of the windmill 5 has a predetermined upward angle to avoid contact between the blades 7 and the tower 4, and the windmill 5 is of a downwind type in which the blades 7 are attached to the leeward side of the nacelle 6 and installed with the back surfaces of the blades 7 facing windward, and the mooring point of the mooring cable 3 to the floating body 2 is set at a position below the surface of the sea and higher than the center of gravity of the floating body 2.
摘要:
A floating marine structure having floats includes: a first float disposed at the center; and a plurality of second floats disposed around the first float; wherein the first float has a floating body made of a floatable material in a polygonal prism shape, a damping unit coupled to the bottom of the floating body at the center, having the same cross-section as the floating body, having a cross-sectional area larger than the cross-sectional area of the floating body, and reducing a shake of the first float in the sea, and at least one coupling hole formed at each side of the floating body; and the second float has the same shape as the floating body and has coupling protrusions formed at sides facing the sides of the floating body and inserted in the coupling holes, and wherein the coupling holes are formed at alternate sides of the floating body.
摘要:
An offshore wind turbine comprising a buoyancy structure intended to provide a buoyancy force to support the wind turbine, wherein said buoyancy structure comprises at least one floater tank and a damping structure extending radially outward from the floater tank to damp forces due to heave, pitch or roll.
摘要:
The self contained ecological dynamic boat pitch and roll trim system by alteration of the hull water flow, of this invention consists of a main body (1) inside of which an elastic flexible pressure means (5), is being housed properly, located on supporting plates (4), compression-retraction springs (7) of said flexible elastic pressure means (5), spring guides (8), spring housing tubes (9), a hydrodynamic barrier (6), a back guide (2) and a front guide (10) for the hydrodynamic barrier (6) and a cover (3), being characterized in that said flexible elastic pressure means (5) is being independent and self contained, said system is also being capable of operating with no seals by use of only water, requiring no dedicated water pump, is being capable of being self cleaned internally and has the form of a cubic shape.
摘要:
A hull-to-caisson interface connection assembly accommodates high-tension loads between the hull (12) and a caisson (20) of a Spar-type platform (10), while facilitating angular flexing motion and constraining lateral and axial movement. The interface connection assembly includes an annular bearing shoulder (32) at the top end of caisson (20), and a laminated bearing assembly (22) mounted in the bottom of the hull (12) and defining a passage (23) through which the upper portion of the caisson (20) passes, so that the caisson shoulder (32) seats against the upper end of the bearing assembly (22). The bearing assembly (22) includes a laminated structure of alternating steel (38) and elastomeric (40) flex elements, bonded to each other to flex together as a unit, rather than sliding relative to each other. The laminated structure of the bearing assembly (22) supports the vertical tensile loads applied by the weight of the caisson (20) on the hull (12), while also accommodating the angular loads applied between the caisson (20) and the hull (12).
摘要:
An active suspension system is used to control the motions of a passenger seat (24) in a high speed watercraft (10). A forward looking wave sensor (52) is used in connection with a feed-forward wave impact shock predictor (86) to determine characteristics of impending dynamic forces applied via the impact of the watercraft (10) on waves (102). Information concerning the impending dynamic forces is used by a passenger seat suspension and control system to attenuate the shock effects on passengers, where such effects are characterized by large-amplitude, short-duration accelerations recurring at a low frequency and/or irregularly.
摘要:
PCT No. PCT/NO96/00279 Sec. 371 Date Dec. 16, 1998 Sec. 102(e) Date Dec. 16, 1998 PCT Filed Nov. 26, 1996 PCT Pub. No. WO97/20729 PCT Pub. Date Jun. 12, 1997A dampening device for dampening the vertical wave-induced motion component of a floating structure. The dampener projects in the form of a skirt down below the bottom of the floating structure (11) and consists of a plurality of channels (47) which extend substantially horizontally and converge from an inlet opening (27, 28, 36, 37, 38) to an outlet opening (16, 46) leading away from the floating structure (11). When the structure (11) moves downwards water is forced from the underside through the channels (47) and creates a jet effect which acts with dampening effect on the vertical motion of the structure. The dampening device may also be made in the form of an outwardly projecting skirt on the floating structure and consist of a plurality of channels (17), where a number of first passages (27, 28) extend in a substantially vertical direction and merge into a number of second passages (29) which extend in an at least substantially horizontal direction, and thereby force the water from a substantially vertical direction of motion, through the first passages (27, 28), into a horizontal direction of motion through the second passages (29) during a part of the passage through the dampener (12). A combination of the two dampeners, in that the dampener (12) is located immediately above the dampener (13) is also possible.