An outboard protective pipe structure of fpso anchor chain detection system

Abstract

The invention provides an outboard protective pipe structure of an FPSO anchor chain detection system, which is characterized in that it includes a protective pipe, and the protective pipe is formed by connecting two sub-pipes with flanges at both ends of the N section through the flange joint of the protective pipe. ≥2; two protective pipes are respectively arranged outside the shipboard on both sides of the FPSO hull through the cantilever structure, and the cantilever structure is welded and fixed to the outer plate of the hull, and each protective pipe extends from the height of the main deck to the bottom plate at the side. By arranging the protective pipe structure on the starboard and starboard sides of the single-point tank area, together with several cantilever support structures welded on the outer plate of the hull, the flange and bolt structure greatly reduce the difficulty of coating the protective pipe in the shipyard and reduce the corrosion of the protective pipe , to avoid the risk of water entering the hull.

Description

technical field [0001] The invention relates to an outboard protection pipe structure of an FPSO anchor chain measurement system, which belongs to the field of shipbuilding. Background technique [0002] Due to the harsh oil field environment and deep water depth of FPSO, the mooring positioning method generally adopts the single point of the inner turret. The anchor chain and cable at the bottom of the single-point device are connected to the anchor pile on the sea surface, thus playing the role of mooring positioning. Since FPSO needs to be fixed in the oil field for a long time, and it needs to resist environmental conditions such as wind, waves and currents, as well as severe sea conditions such as typhoons, the state of the anchor chain is extremely critical for FPSO. According to the engineering experience of several types of FPSOs that have been in service, it is found that the anchor chains and cables of FPSOs have been damaged to a certain extent due to various rea...

AI Technical Summary

Problems solved by technology

If the protective tube of this specification is arranged inside the hull, it is feasible from the perspective of welding and structural reinforcement, but because the diameter of the round tube is too small, it is difficult for the shipyard to achieve the coating operation of the internal weld of the protective tube during construction. Relevant requirements, if the paint coating does not meet the requirements, the long-term offshore operation will cause serious corrosion, which will easily lead to water ingress in the FPSO, which will have extremely serious consequences for the safety of the FPSO

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