초록 ▼

A heat insulator for pipe lines for transportation of low temperature fluids which includes a plurality of longitudinally divided hollow cylindrical heat-insulating units assembled to tightly cover the outer periphery of the pipe lines, characterized in that each heat-insulating unit is composed of

A heat insulator for pipe lines for transportation of low temperature fluids which includes a plurality of longitudinally divided hollow cylindrical heat-insulating units assembled to tightly cover the outer periphery of the pipe lines, characterized in that each heat-insulating unit is composed of a heat-insulating panel element of a circular arc in cross section made of a foamed synthetic resin overlaid and integrally combined with an elastic sheet capable of absorbing stress caused by shrinkage of the heat-insulating panel element at low temperature and a thin metal plate placed on the outer surface of the elastic sheet and integrally combined therewith and that a sealing means is applied to the longitudinal and transverse joint contact surfaces of the adjacent heat-insulating units. This heat insulator can easily be fabricated, conveyed to the place where pipe lines to be protected are installed, and assembled in situ at a reduced cost and are effectively prevented from delamination of the metal plate by virtue of the elastic sheet interposed between the heat-insulating panel element and the thin metal plate.

대표청구항 ▼

A heat insulator for pipe lines with an outer periphery and used for transporting low-temperature fluids, said insulator comprising in combination: a plurality of longitudinally divided hollow heat-insulating units assembled to tightly cover the outer periphery of said pipe lines, each heat-insulati

A heat insulator for pipe lines with an outer periphery and used for transporting low-temperature fluids, said insulator comprising in combination: a plurality of longitudinally divided hollow heat-insulating units assembled to tightly cover the outer periphery of said pipe lines, each heat-insulating unit including: a heat-insulating panel element made of a rigid foamed synthetic resin with an outer periphery and having a shape of circular cross section to fit the outer periphery of said pipe lines: a stress-absorbing sheet overlaid on the outer periphery of the rigid foamed synthetic resin and integrally combined with the foamed synthetic resin of said heat-insulating panel element and being capable of absorbing stress caused by shrinkage of said heat-insulating panel element at low temperature to prevent any dimensional difference therewith; an outermost thin metal plate placed on the outer surface of said stress-absorbing sheet and integrally combined therewith to prevent any dimensional difference between the integrally combined sheet and the outermost thin metal plate against external compression caused by supercooled fluid passing through the pipe lines; and means for holding together adjacent heat-insulating units combining two kinds of heat-insulating materials for higher and lower temperatures as joint sealer.