Thin film type containment system for LNG (liquefied natural gas) ship and mounting method thereof

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Thin film type containment system for LNG (liquefied natural gas) ship and mounting method thereof

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HAN SONGBIAO / LU XINGMIN / PAN GUO / ZHANG HUIPING / ZHENG XINBIN / LI KE

The invention discloses an LNG ship thin film type containment system and an installation method thereof.The thin film type containment system comprises a plurality of liquid cargo tanks and bulkhead transition structures arranged between every two adjacent liquid cargo tanks, and liquid dome open holes are formed in the tops of the liquid cargo tanks; the bulkhead transition structure comprises a transition bulkhead used for separating cabins of the two adjacent liquid cargo tanks and transition assemblies arranged at the two ends of the transition bulkhead and fixed to outer plates of the cargo tanks, the transition bulkhead is a shared bulkhead of the two adjacent liquid cargo tanks, and piping systems in the two adjacent liquid cargo tanks are laid on the two side walls of the transition bulkhead respectively. According to the invention, the bulkhead transition structure is used for replacing a traditional isolation void cabin arranged between two liquid cargo tanks, so that the traditional isolation void cabin and a pump tower structure are canceled, the space is greatly saved, the cabin capacity is improved, the loading volume of the cargo tank is improved, the construction efficiency is improved, and the production cost is reduced.

本发明公开了一种LNG船薄膜型围护系统及其安装方法，所述薄膜型围护系统包括多个液货舱、设置在相邻两液货舱之间的舱壁过渡结构，液货舱的顶部设有液穹开孔，舱壁过渡结构包括用以隔开相邻两液货舱舱室的过渡舱壁、设置在过渡舱壁两端部并与货舱外板相固定的过渡组件，过渡舱壁为相邻两个液货舱的共用舱壁，相邻两液货舱内的管系分别敷设在过渡舱壁的两侧壁上。本发明利用舱壁过渡结构来替代传统的布置在两个液货舱之间的隔离空舱，从而取消了传统隔离空舱和泵塔结构，大大节省了空间，提高了舱容，提升了货舱装载容积，提高了建造效率，降低了生产成本。