Antiseep and thermal insulation tank in supporting structure of ship and manufacture of thermal insulation waterproof tank therefor

Application Number  00129029 Application Date  2000.09.27
Publication Number  1289703 Publication Date  2001.04.04
Priority Information   1999/9/29 FR 9912118  
Applicant(s) Name  Gas Transporting Technology S.A.  
Inventor(s) Name  J. Dreyme  
Patent Agency Code  11038 Patent Agent  yi yongmei
AbstractWatertight and thermally insulating tank built into the bearing structure of a ship, said tank comprising two successive watertightness barriers, one being a primary one in contact with the product contained in the tank and the other being a secondary one placed between the primary barrier and the bearing structure, at least one thermally insulating barrier being provided between the bearing structure and the secondary watertightness barrier and/or between the two watertightness barriers, each thermally insulating barrier consisting of a number of caissons (102) of roughly parallelepipedal overall shape, each caisson having a bottom panel (105) and a top panel (106) made of plywood, characterized in that the panels of each caisson are spaced apart by a number of spacer pieces (103) which consist of thin sheets of plywood, extending at right angles to said panels, each caisson being at least partially filled with blocks of foam (104), bonded over a substantial part of the height of each spacer piece, to prevent the spacer pieces from buckling under load.