Outboard protection pipe structure of FPSO anchor chain detection system

Abstract

The invention provides an FPSO anchor chain detection system outboard protection pipe structure. The structure is characterized by comprising a protection pipe, the protection pipe is formed by connecting N sections of sub-pipes with flanges at two ends end to end through protection pipe flange connectors, and N is larger than or equal to 2, the two protective pipes are arranged outside ship boards on the two sides of the FPSO ship body through cantilever structures respectively, the cantilever structures are welded and fixed to a ship body outer plate, and each protective pipe extends to a ship bottom plate from the height of the main deck on the board side. The protection pipe structures are arranged on the left side and the right side of the single-point cabin area and matched with thecantilever supporting structures, the flanges and the bolt structures which are welded to the ship body outer plate, shipyard protection pipe coating difficulty is greatly reduced, the protection pipecorrosion condition is reduced, and the risk that water enters a ship body is avoided.

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 oilfield environment and deep water depth of the FPSO in the South my country Sea, the mooring positioning method generally adopts the single point of the inner turret, and the single point is arranged in the turret cabin between the cargo oil tank area and the forepeak tank in the hull , through the anchor chain and cable at the bottom of the single-point device to connect with the anchor pile on the sea surface, so as to play 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 se...

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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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