Tension leg platform vortex-induced motion pool model experiment device

Abstract

The invention discloses a tension leg platform vortex-induced motion pool model experiment device, and aims to accurately change the incident flow angle of a tension leg platform in a pool. The experiment device comprises a horizontal mooring mechanism, a horizontal rotating mechanism, a horizontal mooring adjusting mechanism and a vertical mooring mechanism. The horizontal mooring adjusting mechanism comprises a circular ring of a hollow structure and horizontal mooring adjusting units with the same number as the horizontal mooring units, an opening penetrating through the inner side of the whole circular ring is formed in the side, facing the center, of the circular ring, and a plurality of evenly-distributed positioning grooves are formed in the inner wall of the circular ring at the position of the opening. And a track is arranged on the inner wall of the ring opposite to the opening along the inner wall of the ring. The horizontal mooring adjusting unit comprises a positioning ball and a pressure spring, the positioning ball is arranged in the positioning groove corresponding to the incident flow angle to be measured, one end of the pressure spring is fixedly connected with the positioning ball, and the other end of the pressure spring is slidably connected with the track. One end of the horizontal mooring rope penetrates through the opening to be connected with the positioning ball. According to the device, experimental research is completed on the premise that the sensor and the acquisition equipment are not disassembled, and the experimental period is shortened.

Description

technical field [0001] The invention relates to the technical field of marine engineering, and more specifically relates to a model experiment device for a tension leg platform vortex-induced motion pool. Background technique [0002] The tension leg platform is one of the important equipments of offshore oil and gas development projects, and generally consists of the upper part of the platform, the main body of the platform and the tension hamstring tendon system. Under certain incoming flow conditions, periodic alternating vortex shedding occurs on the rear edge of the column of the tension leg platform, causing the column to be subjected to a lift force perpendicular to the incoming flow direction and a resistance parallel to the incoming flow direction, thereby causing the platform to generate vortex-induced motion. The vortex-induced motion will cause the platform to move back and forth significantly, which will significantly increase the load on the platform structure ...

AI Technical Summary

Problems solved by technology

If the angle of the fixed model is changed, the platform model moored in the deep-water experimental pool needs to be hoisted up for disassembly and adjustment, and the pool needs to be drained, and the pre-tension adjustment should be carried out again after the platform model is launched again, which will seriously affect Experiment cycle

At the same time, the installation of sensors and acquisition equipment in this type of experiment is complicated, and frequent disassembly of experimental devices may easily damage and affect the installed platform structure and sensors.

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