VIBRATION ISOLATION STRUCTURE OF CARGO CONTAINMENT SYSTEM FOR LIQUEFIED NATURAL GAS CARRIER

摘要

Disclosed is a vibration isolation structure of a cargo hold for a liquefied natural gas (LNG) carrier capable of absorbing impact to damp vibration. The present invention comprises: a first barrier having one surface with which LNG is in contact, and multiple membranes on which multiple wrinkles are concavely formed to absorb the contraction and the expansion caused by thermal deformation; a first panel mounted on the other surface of the first barrier; and a first insulation layer having multiple first insulation foams arranged on the other surface of the first panel for insulation. A corrugated plate is mounted between the first barrier and the first panel. The corrugation plate comprises: multiple wrinkles formed by absorbing the impact applied through the first barrier to damp the vibration; and combined wrinkles formed on the surface to be fitted in the wrinkles of the membranes. The present invention can increase a vibration isolation performance by absorbing the impact applied to the first barrier using the corrugated plate mounted between the first barrier and the first panel to damp the vibration; thereby increasing the safety of a cargo hold for an LNG carrier. Also, the present invention can have the simple configuration of the corrugated plate and can conveniently construct the corrugated plate.