Device for reducing liquid oscillation in moon pool of oceanographic engineering structure

Abstract

Provided is a device for reducing liquid oscillation in a moon pool of an oceanographic engineering structure. Being fixed on the inner wall of the moon pool, a stream guidance cover comprises an outer housing, an inner housing, a plurality of vertical ribs and a plurality of arc-shaped transverse rib plates that are fixedly and integrally connected with the inner wall of the moon pool. The outer housing and the inner housing are both in trumpet shapes. The inner housing is installed between the outer housing and the inner wall of the moon pool. The vertical ribs are radially and uniformly distributed among the outer housing, the inner housing and the inner wall of the moon pool. The plurality of arc-shaped transverse rib plates are fixed at intervals among the outer housing, the inner housing and the inner wall of the moon poll layer by layer. The outer housing and the inner housing are both provided with multiple rows of round holes from top to bottom. The device for reducing the liquid oscillation in the moon pool of the oceanographic engineering structure is simple in structure. The stream guidance cover or multiple layers of wave attenuating rings or multiple rows of arc-shaped wave attenuating plates can effectively prevent the waves climbing, thereby preventing the occurrence of overtopping on the deck, reducing the formation of vortex inside the moon pool, and improving the hydrodynamic property of watercraft. The coupling effect between the sea water and the structure is weakened; and the oscillation of the oceanographic engineering structure is relieved.

Description

technical field [0001] The invention relates to a device for reducing sloshing of marine engineering structures, in particular to a device for reducing liquid sloshing in a moon pool of a drilling ship or drilling platform, and belongs to the technical field of ships and marine engineering. Background technique [0002] With the sharp increase of human demand for oil and the continuous development of offshore oil and gas resources, various types of offshore drilling ships and offshore drilling platforms have emerged. The common structural feature of this type of marine engineering structure is that a vertical through hole (moon pool) is set in the middle from the upper deck to the bottom for drilling and oil production. Since the through hole is directly connected to the ocean, the seawater inside the moon pool is greatly affected by the external ocean environment. Under the action of wind, waves and currents, the seawater in the moon pool sloshes severely and moves violen...

AI Technical Summary

Problems solved by technology

To slow down the sway of structures and the impact of seawater on the deck, the structure of the moon pool will also affect the propulsion efficiency of the ship

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