Improvement in the means of thermal insulation of pipes subject to thermal, hydrostatic and mechanical and method of making such media sislamiento tensions.

摘要

The thermal insulation of underwater pipes subjected to high thermal stresses, hydrostatic and mechanical, which in combination comprises a metal tube, a first layer deelastómero surrounding said tube and thus ensures protection against corrosion, a means of thermal insulation that includes a number of sectors or layers of lacunar insulating material enclosing air, resistant to high hydrostatic pressures, said sectors or layers adhered together by sheets or layers of elastomer that have undergone a vulcanization at a temperature not exceeding 120 ° being C , superimposing said means continuously to said first layer, a second layer of watertight sea, abrasion resistant elastomer, which surrounds the thermal insulation means protecting said layers and insulation means each metal pipe conduit excluding the ends of the latter, that s left in protection to allow it end to end adjacent tubes together welding, and a means of rapid and tight connection of insulating devices of two adjacent tubes, said device being characterized by comprising each tube (11) or the duct segment, at least one end and preferably at both ends, a sleeve (26, 27) of a material having good characteristics of resistance to corrosion, interposed between the outer surface (17) of the tube and the first layer anticorrosion said ( 18), which is placed during the prefabrication workshop or segment of said tube.