Floating platform movement inhibition system based on small water line plane damping device

Abstract

The invention discloses a floating platform movement inhibition system based on a small water line plane damping device. The floating platform movement inhibition system comprises more than one rotating body, wherein the area of the horizontal cross section of each rotating body is designed to be changeable in the vertical direction; each rotating body is fixed on a platform floating body structure; the upper bottom side of each rotating body is sealed or partially opened to communicate with the outside; the lower bottom side of each rotating body is opened and immersed into an external liquid and is communicated with the external liquid; the upper space of the rotating bodies is occupied by air to form an air chamber; the lower space of the rotating bodies is occupied by the external liquid to form a liquid column. The small water line plane damping device is fixed on the platform floating body structure, through optimized arrangement of the position of the damping device on the platform, the damping system can be within a relatively wide wave frequency domain, and a relatively good movement inhibition effect can be achieved. By adopting the system, under the condition that the mass of the platform is not greatly increased, the movement of the platform is effectively inhibited, the working environment of the platform is improved, and the manufacturing cost of the platform is greatly lowered.

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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