LIQUIFIED HYDROGEN TANK AND DESIGN METHOD FOR THE SAME

• Main Authors: KANO DAICHI, SHIMODA TAICHIRO, TOMINAGA HARUHIKO, INOHARA MASAYOSHI, MOCHIDA KUNIHIKO
• Format: Patent
• Language: English; Japanese
• Published: 15.03.2023
• Subjects: ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; 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; EQUIPMENT FOR SHIPPING; HANDLING THIN OR FILAMENTARY MATERIAL; PACKAGES; PACKAGING ELEMENTS; PACKING; PERFORMING OPERATIONS; RELATED EQUIPMENT; SHIPS OR OTHER WATERBORNE VESSELS; STORING; TRANSPORTING

To provide a structure and a design method which can prevent leakage of hydrogen of liquid or gas regardless of the size of a liquefied hydrogen tank which is mounted on a vessel so as to achieve mass transportation of liquified hydrogen at cryogenic temperature.SOLUTION: A liquified hydrogen tank mounted on a vessel includes an inner tank for storing liquified hydrogen, and an outer tank surrounding the inner tank. At least one of the inner tank and the outer tank is a leakage prevention tank. The leakage prevention tank has such wall thickness as to prevent propagation of an initial defect exceeding half of the wall thickness during a tank life.SELECTED DRAWING: Figure 4 【課題】極低温の液化水素の大量輸送を実現するにあたり、船舶に搭載される液化水素タンクにおいて、当該液化水素タンクの規模に関わらず液体又は気体の水素の漏洩防止を実現可能な構造及び設計方法を提案する。【解決手段】船舶に搭載される液化水素タンクは、液化水素が収容される内槽と、内槽を包囲する外槽とを備え、内槽及び外槽のうち少なくとも一方は漏洩防止タンクであり、漏洩防止タンクはタンク寿命中に初期欠陥が壁の厚さの半分を超えて伝播しない壁厚を有する。【選択図】図４