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公开(公告)号：US11118646B2
公开(公告)日：2021-09-14
申请号：US16495022
申请日：2018-02-28
Applicant: Dalian University of Technology
Inventor： Zhiyu Jiang , Zhengru Ren , Wei Shi , Dezhi Ning
Abstract: An active tuned mass damper applied to the offshore monopile wind turbine belongs to the field of marine technology. A mass block is connected to the inner wall of the tower through a spring. The two ends of the damper and the force actuator are connected to the mass block and the inner wall of the tower, respectively. When the installation of tower is finished, the spring and the damper begin to work. The movement of mass block will partly offset the movement of the tower caused by the wave force. The force actuator starts to work before the mating. The exact position of the nacelle can be obtained from the Global Positioning System (DGPS). The position of tower can be adjusted in the horizontal plane through the force actuator. So, the offshore installation time for nacelle will be saved. The whole installation time and cost will also be reduced.
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公开(公告)号：US10947952B2
公开(公告)日：2021-03-16
申请号：US16339570
申请日：2017-09-11
Applicant: Dalian University of Technology
Inventor： Wei Shi , Zhiyu Jiang , Zhengru Ren , Dezhi Ning
Abstract: The present invention relates generally to the offshore renewable energy utilization technology. A novel floating wind-wave integrated power generation system is based on the braceless semi-submersible floating wind turbine concept and the oscillating water column (OWC) wave energy generator. The integrated system includes the offshore wind energy system and the oscillating water column wave energy system. The novel floating wind-wave integrated power generation system transfers the rise and fall movement of the water column into the air in and out movement which is converted into the electricity by the air turbine generator. This invention makes good use of pontoons at of the semi-floating platform and the mooring lines. Since the wave energy system will move with the wave movement, which will reduce the power generation efficiency. The pontoon can help to mitigate this movement. The mooring system can further prevent the movement of the wave energy device. This invention uses the braceless structure, which simplifies the construction process and reduce the fatigue issues for the braces. Compared with the traditional three columns semi-submersible wind turbine, this invention enlarges the water plane area. The moment of inertia for hydrostatic stability is enhanced, and the stability of the floating foundation is improved.
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公开(公告)号：US12037224B2
公开(公告)日：2024-07-16
申请号：US17288324
申请日：2020-05-30
Applicant: DALIAN UNIVERSITY OF TECHNOLOGY
Inventor： Wei Shi , Zhengru Ren , Zhaobo Song , Zhiyu Jiang , Lixian Zhang , Ke Ma
CPC classification number: B66C13/105 , B66C23/60
Abstract: A crane extension and installation device includes an extension device, a winch, a pulley and a cable. A main arm includes a vertical slide rail, the main arm is inclined relative to vertical, and three second pulleys at different heights of the slide rail are installed in the vertical direction of the slide rail, and the second pulley can slide vertically along the slide rail and can be fixed at a certain position of the slide rail. The extension device includes a number of cantilever beams connected end to end. The front end of the extension device is a cantilever beam, and a fixed pulley is installed on the lower peripheral surface of the extension device. The end face of the cantilever beam is equipped with a vertical lower arm through a joint, and the bottom end of the lower arm has a first pulley fixed by the joint.
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公开(公告)号：US10697435B2
公开(公告)日：2020-06-30
申请号：US16340663
申请日：2017-09-11
Applicant: Dalian University of Technology
Inventor： Zhengru Ren , Zhiyu Jiang , Wei Shi , Dezhi Ning
Abstract: An anti-swing device for offshore wind turbine tower installation which reduces pendular motion of the tower component during mating process. Subsystems are at the transition piece, tower, and bridge. Winches are arranged on and fixed to the tower's inner wall and connected through cables. A remote signal transceiver and acquisition controller are arranged and fixed to the tower's inner wall. The transceiver controls the connector at the tower end and servo winch motors which control the cables to adjust the position of the suspended tower component. The controller acquires tension signals on the cables from the tower and transmits signals to the transceiver. Acceleration sensors are included in the acquisition controller. Several connector are included in the tower end and fixed at the bottom of the tower component. The number of connectors is the same as winches at the transition piece and their positions correspond.
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