Control system for stabilizing and reducing swing through tuning heaving plate of deep-water dynamic-positioning semi-submersible platform

A semi-submersible platform, dynamic positioning technology, applied in the direction of equipment to reduce ship motion, equipment to increase the stability of ships, ships, etc. The platform response is not easy to control and other problems, so as to improve the control ability and improve the heave performance.
CN104890830AInactive Publication Date: 2015-09-09DALIAN UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
DALIAN UNIV OF TECH
Publication Date
2015-09-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a control system for stabilizing and reducing swing through a tuning heaving plate of a deep-water dynamic-positioning semi-submersible platform, and relates to a tuning heaving plate system of the deep-water semi-submersible platform. Lower ends of two platform stand columns on the same side of a deck of the semi-submersible platform are fixedly connected with a platform floating box, and the tuning heaving plate systems are respectively mounted at the bottom of the platform floating box and directly under the platform stand columns; each of the tuning heaving plate systems comprises a heaving plate, connecting truss frames, a restoring spring, active variable damping devices and limiting springs. According to the control system disclosed by the invention, a heaving response can be controlled or the rolling freedom degree or the pitching freedom degree can be stabilized respectively by regulating the rigidity of the restoring springs according to marine conditions or actual requirements, so that a motion response of the freedom degree of a perpendicular plane which cannot be controlled by a dynamic positioning system is controlled, and the semi-submersible platform is suitable for worse marine conditions.
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Description

technical field

[0001] The invention relates to a semi-submersible platform, in particular to a deep-water dynamic positioning deep-water semi-submersible platform with movable tuning heave plates. Background technique

[0002] The deepwater semi-submersible platform has become one of the important equipment for deepwater oil and gas exploration and development due to its large deck area, large loading capacity and low construction difficulty. As the operating water depth of the platform increases, the length and strength of the anchor chains of the traditional mooring system need to increase, thus causing the weight of the entire mooring system to increase sharply, and the arrangement of the anchor chains is more complicated and needs to cover a larger water surface area. Interfere with the navigation or drilling operations of other ships. For this reason, the dynamic positioning system is widely used on deep-water marine floating structures because its cost does not incre...

Claims

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