Temporary fixing device and construction method thereof

Abstract

The invention provides a temporary fixing device and a construction method thereof. The device is used for being arranged between an upper buoyancy tank and a lower buoyancy tank in wet towing transportation of a novel semi-submersible type oil production platform. The device is characterized by comprising a plurality of base structures arranged above a deckhead of the lower buoyancy tank, plug pin structures which are in one-to-one correspondence to the base structures and arranged below an underdeck of the upper buoyancy tank and above the base structures, lower internal thread components fixed to the side faces of the base structures, upper internal thread components fixed to the side face of the upper buoyancy tank and located over the lower internal thread components, and studs with two ends fixedly connected with the lower internal thread components and the upper internal thread components respectively, wherein an opening is formed in the middle of each base structure, and each plug pin structure is inserted into the corresponding opening.

Description

technical field [0001] The invention relates to a fixing device and a construction method, in particular to a temporary fixing device and a construction method applied between double pontoons in the wet towing transportation of a new semi-submersible oil production platform. Background technique [0002] After the semi-submersible oil production platform is built in the shipyard, it needs to be transported to the operating sea area. Generally, there are two methods: for short-distance transportation, it can be directly towed by a tugboat to the operating sea area, that is, wet towing; for medium and long-distance transportation, first It is transported by transport ship to a shelter with shallow water depth near the operating sea area (that is, dry towing), and then wet towed by a tugboat to the operating sea area. It can be seen that no matter which method is used, wet mopping is an essential process. For a conventional semi-submersible platform, its hull structure include...

AI Technical Summary

Problems solved by technology

In order to reduce the wave load, the draft of these auxiliary structures is relatively deep, and subject to the limitation of the draft of the shipyard wharf (generally no more than 14 meters), these auxiliary structures cannot be welded together with the main hull when they leave the factory, and they need to be installed at sea

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