Spacing and centering device for a rigid double-wall duct with a low heat transfer coefficient
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United States of America Patent
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Jan 15, 2008
Grant Date -
Oct 26, 2006
app pub date -
Sep 1, 2004
filing date -
Sep 8, 2003
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A spacing and centering device for a rigid double-wall duct, for example of the winding type, which is intended for the transport of hydrocarbons. The rigid duct comprises two coaxial tubes which are separated by an annular space. The spacing and centering device is housed in the annular space in order to maintain a distance between the two coaxial tubes. An element made from a material having low heat conductivity and comprising an aerogel element is at least partially covered with a casing of polymer-type plastic material.
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