A SYSTEM FOR MOTION DAMPING OF A FLOATING MARINE STRUCTURE, AN ARRANGEMENT, A METHOD AND USE OF SUCH SYSTEM

    公开(公告)号:US20240083557A1

    公开(公告)日:2024-03-14

    申请号:US18270565

    申请日:2021-12-21

    Inventor: Cay REIERSDAL

    CPC classification number: B63B39/06 F03D13/256 B63B2035/442

    Abstract: A system, an arrangement and a method, all for motion damping of a floating marine structure. Also disclosed is a use of the system. The system has at least one dampening device configured to dampen a movement in one direction and allowing a movement in the opposite direction, and a suspension arrangement has a respective wire configured to suspend the at least one dampening device hanging at a suspended depth in the water from the marine structure and with the dampening device oriented so that a dampening force induced by the dampening device is subjected in the extension of the wire. Also, each dampening device is a passive damping device has a valve structure configured to dampen a movement in one direction and allowing a movement in the opposite direction essentially without damping interaction.

    Geostationary floating platform
    3.
    发明授权

    公开(公告)号:US11878777B2

    公开(公告)日:2024-01-23

    申请号:US17267678

    申请日:2019-07-05

    Applicant: PAV Holding AS

    Abstract: A system is demonstrated for heave neutralisation of semisubmersible platforms that can be built into any conceivable configuration of such platforms. That the system is also conceivably active and predicatively can be controlled can be concluded by analysing the appended calculation models. As an example FIG. 18, column E, is mentioned, wherein the water volume increments in the rise canister are 37 cubic metres for each half metre of wave height, so that, with reference to column A, from H=10.5 m to H=12 m is 4×37 148 cubic metres more than 150 tonnes—simultaneously with the air pressure, shown in column K, increasing from 123.86 to 131.05 kPa, a difference of just 6.19 kPa (0.0619 bar or 61.9 millibars). Large ballast volumes can be moved out and in of the system at small pressure changes and short response time.

    ROTARY ACTUATOR
    6.
    发明公开
    ROTARY ACTUATOR 审中-公开

    公开(公告)号:US20230383820A1

    公开(公告)日:2023-11-30

    申请号:US18073633

    申请日:2022-12-02

    Abstract: A rotary actuator includes a housing having a first end and a second end spaced from the first end along an axis. The housing defines a cavity extending circumferentially about the axis. An output shaft is arranged coaxially with the axis. The output shaft extends outwardly from the cavity through the first end. A drive system is disposed in the cavity and axially spaced from the first end. A gearbox is disposed in the cavity between the output shaft and the drive system. The gearbox is coupled to the drive system and the output shaft. A rotational controller is disposed in the cavity between the drive system and the second end. The rotational controller is configured to actuate the drive system to adjust an angular position of the output shaft.

    DEVICE FOR THE ROLL STABILIZING OF A WATERCRAFT

    公开(公告)号:US20230264792A1

    公开(公告)日:2023-08-24

    申请号:US18012484

    申请日:2021-07-06

    CPC classification number: B63B39/06

    Abstract: A device for the roll-stabilization of a watercraft in motion, at anchor, or at zero speed, and/or for influencing the course of the watercraft, includes a fin-carrying shaft on which a guide fin is disposed. For changing an actual angle of attack of the guide fin in the water, the fin-carrying shaft is drivable by an electromechanical drive unit, and the drive unit is disposed on the hull using a base. An electromechanical drive unit is configured with a synchronous motor that drives the fin-carrying shaft using a reducing eccentric transmission. The device thereby has a significantly reduced installation space requirement, causes only slight operating noises, and is also optimally electronically regulable.

    Electric Fin Stabilizer
    8.
    发明申请

    公开(公告)号:US20180237113A1

    公开(公告)日:2018-08-23

    申请号:US15954830

    申请日:2018-04-17

    CPC classification number: B63B39/06 G05D1/0875

    Abstract: A marine vessel stabilizer and control including a fin having a stem extending into the hull. An arm is connected to the stem and extends towards a connector which is connected to a rod. A housing is connected to another end of the rod and a screw passes through the housing. A motor is connected to the screw and configured to rotate to rotate the fin. A controller is connected to the motor, a speed sensor, a roll sensor and a fin position sensor such that a control signal can be calculated and the position of the fin can be determined to reduce roll of the vessel both when making headway and when at rest (zero speed). When the vessel is at rest, the fin is be configured to rotate through maximum angles greater than 15 degrees from either side of a neutral position.

    AN ADJUSTABLE DEVICE AND A BOAT PROVIDED WITH A STABILIZING DEVICE

    公开(公告)号:US20180154989A1

    公开(公告)日:2018-06-07

    申请号:US15576167

    申请日:2016-05-23

    Applicant: HUMPHREE AB

    Abstract: The invention relates to an adjustable device, pivotally arranged about a pivot axis (230, 230a, 230b) by means of a rotating electric motor (213) having a rotor (215) and a stator (216) via a reduction gearing (214) for reducing the rotation of the motor to the adjustment movement of the adjustable device (4a, 4b, 104a, 104b), wherein the reduction gearing (214) is a planetary gearing, the axis of the electric motor (213) is coaxial with the axis of said reduction gearing (214) and with the pivot axis (230, 230a, 230b) of said adjustable device (4a, 4b, 104a, 104b) and the reduction gearing (214) and the electric motor (213, 213a, 213b) to form a compact construction.

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