Resistance-reducing device for a moon pool

Abstract

Disclosed is a lattice-shaped structure that occupies a portion of a moon pool in the bottom of a ship. While the ship moves, the lattice-shaped structure breaks waves to prevent separated water flow from being introduced into the moon pool, thereby reducing resistance applied against the ship. Since the lattice-shaped structure is a lightweight structure, the ship including the lattice-shaped structure can be efficiently towed with various towing apparatuses. Since the lattice-shaped structure can be rotated and retracted toward an inner wall of the ship, various exploration and drilling procedures can be efficiently performed through the moon pool. For this purpose, the lattice-shaped structure (16) includes a plurality of plates (20), a plurality of slopes (22), a plurality of longitudinal reinforcements (24), and a hinge (H). The plates (20) are spaced apart from each other in the longitudinal direction of the ship, and are arranged on a plurality of lines in the width direction of the ship. The slopes (22) are arranged on a plurality of lines in the width direction of the ship. An end of the slope (22) is coupled to the front end of the plate (20), and the other end thereof is inclined upward toward the front end of the ship and is spaced apart from the adjacent plate (20). The longitudinal reinforcements (24) are arranged on a plurality of lines in the longitudinal direction of the ship. Each of the longitudinal reinforcements (24) is coupled to the plate (20) and to the slope (22). The hinge (H) is used to rotate the lattice-shaped structure (16) between a sailing position and a working position in the moon pool (12).

Description

technical field [0001] The present invention relates to a moon pool installed on a ship or an ocean structure, and specifically relates to a moon pool impedance reduction device characterized by the following content. When the moon pool is operated, it is rotated and stored along the inner wall of the moon pool to reduce various The difficulty of such exploration and drilling operations, when sailing, it extends to the bottom of the ship to effectively block the separation flow entering the interior of the moon pool and reduce the resistance. Background technique [0002] As we all know, with the increasing industrialization, the use of various resources is also increasing dramatically. Among them, crude oil and other resources have become extremely important issues in terms of production and supply. Therefore, recently, various drill ships (Drill ships) equipped with drilling equipment and offshore factories FPSO (Floating, Production, Storage and Offloading) have been dev...

AI Technical Summary

Problems solved by technology

However, when using a completely sealed structure, due to its excessive weight, it is necessary to set up salvage and other application equipment as a weight structure, which is very troublesome and difficult to apply

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