| 摘要 |
851,568. Storing liquefied gases. NORTH THAMES GAS BOARD, and A.P.V. CO. Ltd. June 18, 1959 [July 1, 1958], No. 21057/58. Class 8(2). Prevention of compacting of powdered heat insulating material between inner and outer shells 2, 1, Fig. 1, of a liquefied gas e.g. methane container is effected by surrounding the inner shell 2 by a wall 7 so as to provide an air space 15 therebetween and a powdered heat insulation space 16 between the wall 7 and the outer shell 1, said wall 7 comprising a series of panels 9 e.g. horizontally corrugated aluminium sheets carried by vertical stanchions 10, Fig. 3, fixed by spaced, ties 11 to the outer shell 1 and capable of expansion and contraction relative to each other and to the stanchions 10 in a direction around the periphery of the wall 7 thereby maintaining the width of the insulation space 16 substantially constant. The corrugated sheets 9 are held between flanges 34 of the T-shaped stanchions 10 and angle strips 35 bolted to stanchion webs 29 and lined with resilient sealing material 37 ; the sheets having slots 32 at their ends which fit over pins 33 projecting from the flanges 34, thus allowing peripheral movement of the sheets. The shells 1, 2 have base plates 3, 5 relatively spaced by a layer of concrete 14 and dialomaceous bricks 13. The insulation space 16 is filled with perlite as in a space 17 between conical covers 4, 6 of shells 1, 2. |
