Water spread limiting system for pre-insulated piping

F - Mech Eng,Light,Heat,Weapons – 16 – L

Patent

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F16L 59/16 (2006.01) F16L 5/00 (2006.01) F16L 59/14 (2006.01)

Patent

CA 2734161

A section of pipe is used in a pre-insulated piping system where the system is made up of lengths of insulated and jacketed pre-insulated piping. Each length of piping is made up of an inner carrier pipe having an interior surface and an exterior surface. An envelope of foamed insulation surrounds the inner pipe exterior surface and an outer protective jacket surrounds the envelope of foamed insulation. The length of piping has a joining end for joining to an adjacent length of piping, whereby the adjacent lengths of piping provide a continuous length of fluid conduit for conveying high temperature fluids. A water containment element is located on the exterior of the inner carrier pipe at a location near the pipe joining end. The containment element serves to stop the flow of any intruding water or steam along the length of the inner carrier pipe. The containment element may also include a heat dissipating element which surrounds the inner carrier pipe for at least a portion of the length thereof. Any water which penetrates the outer protective jacket contacts the heat dissipating element and is cooled below boiling before traveling any significant distance along the length of the section of piping.

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