| 摘要 |
1. A thermally insulating casing for encasing components which are essentially cylindrical in their external shape, such as, for example, pipelines or pressure containers, in particular in conventional or nuclear installations, using moulding material which can be processed to form insulating plates and having a basis of pyrogenic silicic acid, reinforcing fibres and opacifiers, characterised in that a) insulator elements (d) which have been cut from the insulating plates (D) and which are trapeziumshaped in cross-section, are assembled to form a polygonal insulator shell (P) for the thermally insulating casing (K) ; that b) the polygonal shell bodies (P) are provided with a moisture-proof covering (8) made of austenitic steel foils ; and that c) the thermally insulating casing (K) of tubular form comprises at least two half-shell sub-casings (k1, k2) which consist of a round or polygonally-angled outer sheet-metal jacket (8.1), a round or polygonally-angled inner sheet-metal jacket (8.2) which also covers the junction zone, and annular metal end sheets (8.3), a moisture-proof connection between the outer sheet-metal jacket, the inner sheet-metal jacket and the end sheets of the sub-casings (k1, k2) being established by means of a folded or welded connection (12, 13). |
