Water soft yoke mooring model test system

Abstract

The invention discloses a water soft yoke mooring model test system. The system comprises a six-degree-of-freedom motion simulation platform, a mooring support, a mooring leg, a mooring arm, a ballasttank and a single point platform. The six-degree-of-freedom motion simulation platform simulates the motion attitude of a hull in a waterless environment and produces coupling motion. The mooring support transmits the hull motion of the six-degree-of-freedom motion simulation platform to a soft steel arm mooring system. The lower end of the mooring leg is connected to the mooring arm, and the upper end is connected to the mooring support. The mooring arm is a rigid A-shaped framework, and the ballast tank at a transverse support portion provides a restoring force so as to achieve a damping effect. The single point platform is the fixed structure of a soft yoke test model, and the upper portion is a mooring head. In the invention, based on a real single point mooring structure, scaling andmodel simplification are performed so as to realize mooring structure motion simulation in the waterless environment. Simultaneously, the test system adopts a modularization design and expansibilityis good; and a correlation component is replaced and a corresponding sensor is arranged so as to satisfy different scientific research demands.

Description

technical field [0001] The invention belongs to the technical field of mooring, and relates to a mooring model test system with a soft rigid arm on water. Background technique [0002] As we all know, my country's Bohai Sea region contains a large amount of oil resources, and most of them are marginal oil fields. China National Offshore Oil Corporation has invested seven FPSO (Floating Production Storage and Offloading, floating production storage and offloading) Extraction of oil and gas. FPSO has the functions of production, storage and unloading. Generally, there is no power device by itself, and it needs to be moored and positioned with the help of a certain mooring system. These FPSOs are fixed in a specific sea area through the soft-rigid arm single-point mooring system to facilitate the long-term mining and storage of FPSOs in the sea area. The force changes uniformly and will not have a large impact on the single-point platform. This structure is suitable for shal...

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Problems solved by technology

[0003] At present, many experts and scholars have conducted extensive and in-depth research on the soft rigid arm single point mooring structure of FPSO. There are still many design safety problems in the application. There have been many accidents in Bohai Sea where the soft rigid arms failed under external load conditions.

Because it involves the coupling problem of the hull motion and the motion of the soft-rigid arm multi-body system, the conventional numerical simulation method cannot simulate the real situation on site

There are also scholars who have carried out extensive on-site monitoring research, but due to the complex on-site conditions, the response data of a single working condition cannot be obtained, and these problems restrict the progress of related research.

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