| 摘要 |
781,354. Storing liquefied gases. CONSTOCK LIQUID METHANE CORPORATION. Sept. 16, 1955 [March 16, 1955], No. 26580/55. Classes 8(2) and 102(2). [Also in Group XXXIII] A plurality of separate liquefied gas, e.g. methane storage tanks 5 are held in nested relation within a metal container by a heat insulation lining 4 thereof, e.g., of balsa wood. The container comprises a double-walled hull of a ship (see Group XXXIII] and each tank 5 which is of aluminium or austenitic steel capable of resisting fatigue at low temperatures is connected by a downpipe 7 to an insulated manifold 6 and by a short pipe 8 to a gas discharge manifold 9 which has a branch 10 opening to the interior pores of the balsa wood lining 4. The thickness of the latter is such that any liquefied methane coming into contact therewith is vaporized before reaching the inner wall 3 of the hull. Methane may be discharged as vapour through manifold 9 and valve 3 by passing warm air or liquid between the hull walls 1, 3 or the vapour may serve to force liquid methane up the pipes 7 and along a manifold 6 and through a pipe 12 coupled thereto and discharging into a storage vessel 10a. Air which may have entered the tanks, e.g. during filling thereof, is expelled by carbon dioxide vaporized from a solid block of carbon dioxide at the bottom of each tank. |
