METAL MEMBRANE PANEL OF INSULATED LNG CARGO TANK

• Main Authors: MIN, KEH-SIK, WON, SUN-IL, KIM, OI-HYUN, KIM, BYONG MAN, CHOI, ICK-HUNG
• Format: Patent
• Language: English; French; German
• Published: 26.03.2008
• Subjects: ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; BLASTING; CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; CONVEYING; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED,LIQUEFIED, OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; HANDLING THIN OR FILAMENTARY MATERIAL; HEATING; LIGHTING; MECHANICAL ENGINEERING; PACKAGES; PACKAGING ELEMENTS; PACKING; PERFORMING OPERATIONS; STORING; STORING OF DISTRIBUTING GASES OR LIQUIDS; TRANSPORTING; VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED ORSOLIDIFIED GASES; WEAPONS

A metal membrane panel of an insulated LNG cargo tank, which has an improved stability by decreasing localized stress concentration areas, and which has an improved welding efficiency by reducing the number of corrugations on welding edges of adjacent metal membrane panel to reduce the number of curved portions to be welded. The metal membrane panel includes a plurality of rectangular unit corrugations (10) arranged on the panel (A) to be spaced from each other, each of the rectangular unit corrugations (10) being comprised of a pair of transverse bulging portions (12) and a pair of longitudinal bulging portions (11) and being shaped to have gently curved corners, transverse and longitudinal connecting corrugations (40, 50), which connect the plurality of rectangular unit corrugations (10) to each other, and transverse and longitudinal extending corrugations (60, 60'), which are extended to edges of the metal membrane panel (A) from the transverse and longitudinal bulging portions (12, 11) of the outermost unit corrugations (10).