A Motion Suppression System of Floating Platform Based on Small Waterplane Surface Vibration Device

Abstract

The invention discloses a floating platform motion suppression system based on a small waterplane surface vibration damping device, which includes: more than one rotating body, the horizontal cross-sectional area of ​​each rotating body is designed to be variable along the vertical direction, each Each rotating body is fixed on the platform floating body structure; the upper bottom surface of each rotating body is closed or partially opened to the outside world, and the lower bottom surface is open to immerse in the external liquid and communicate with it. The upper space of the rotating body is occupied by gas to form an air chamber, and the lower part The space is occupied by the external liquid to form a liquid column. The small water surface vibration damping device of the present invention is fixed on the floating body structure of the platform. By optimizing the layout of the vibration damping device on the platform, the vibration damping system can play a better role in a wider wave frequency domain. motion-inhibiting effect. The system can effectively restrain the movement of the platform without significantly increasing the quality of the platform, improve the working environment of the platform, and greatly reduce the cost of the platform.

Description

technical field [0001] The invention relates to a motion suppression system of a floating platform based on a small water plane surface vibration damping device. Background technique [0002] With the rapid development of the world economy, the demand for energy in various countries has also increased sharply. Land and shallow sea oil resource reserves are becoming less and less, and its exploitation is becoming more and more difficult. The center of gravity of oil exploration has moved to the deep sea. The natural environment of the deep sea is extremely harsh, and there will be situations such as strong winds, high waves, and rapid currents. The design and development of deep-sea equipment will be a hot spot in the field of engineering science in the next few decades. [0003] Most deep-sea mining and production platforms use compliant floating platforms. Common floating platforms include tension leg platforms, semi-submersible platforms and Spar platforms. The tension ...

AI Technical Summary

Problems solved by technology

[0007] Existing platform vibration damping devices (especially devices for suppressing vertical motions such as heave, roll, and pitch) have the following points worthy of improvement: 1) It will increase the wave load of the platform structure, which will affect the overall movement of the platform. have obvious adverse effects

2) The arrangement of vibration damping devices does not take into account the interaction of various factors such as the number and arrangement of vibration damping devices, and does not conduct an optimization analysis on the arrangement; for some sea conditions, the number and arrangement of vibration damping devices will be more The vibration reduction effect of the earth influence system

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