To provide a double shell tank capable of reducing the heat immersion via an outside ring, a barrier and an inside ring while sufficiently securing the strength the junction between the barrier and the outside ring/the inside ring.SOLUTION: A double shell tank comprises: an inner tank having an inner tank body and an inner tank dome; an outer tank having an inner tank manhole, an outer tank body surrounding the inner tank body across the first vacuum space, and an outer tank dome surrounding the inner tank dome across the second vacuum space; an outer tank manhole; a bellows incorporated in the outer tank dome so as to divide the outer tank dome into a lower fixed part and an upper movable part; an inside ring fixed to the inner tank dome in the second vacuum space; an outside ring that is fixed to the movable part of the outer tank dome in the second vacuum space and that is located below the inner ring; and a cylindrical barrier that connects the inside ring to the outside ring so as to divide the second vacuum space into an upper side vacuum space and a lower side vacuum space, in which the thickness of the central part of the barrier is thinner than the thickness of both ends of the barrier.SELECTED DRAWING: Figure 1
【課題】隔壁と外側リングおよび内側リングとの接合部の強度を十分に確保しつつ外側リング、隔壁および内側リングを介した熱浸入を低減することができる二重殻タンクを提供する。【解決手段】二重殻タンクは、内槽本体部および内槽ドームを有する内槽と、内槽マンホールと、第1真空空間を隔てて内槽本体部を取り囲む外槽本体部および第2真空空間を隔てて内槽ドームを取り囲む外槽ドームを有する外槽と、外槽マンホールと、外槽ドームを下側の固定部と上側の可動部とに分割するように外槽ドームに組み込まれたベローズと、第2真空空間内で内槽ドームに固定された内側リングと、第2真空空間内で外槽ドームの可動部に固定された、内側リングよりも下方に位置する外側リングと、内側リングと外側リングとを連結し、第2真空空間を上側真空空間と下側真空空間とに仕切る筒状の隔壁と、を備え、隔壁の中央部の厚さは、当該隔壁の両端部の厚さよりも薄い。【選択図】図1
DOUBLE SHELL TANK AND LIQUID GAS CARRYING VESSEL
二重殻タンクおよび液化ガス運搬船
2019-09-12
Patent
Electronic Resource
Japanese
IPC: | F17C Behälter zum Aufnehmen oder Speichern verdichteter, verflüssigter oder verfestigter Gase , VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES / B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS / B65D Behältnisse zur Lagerung oder zum Transport von Gegenständen oder Materialien [Container], z.B. Säcke, Beutel, Fässer, Flaschen, Dosen, Kästen, Büchsen, Schachteln, Packkörbe, Tonnen, Gläser, Flüssigkeitsbehälter, Trichtersilos, Transportbehälter , CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS |