| 摘要 |
<p>The invention relates to a spacing and centring device for a rigid double-wall duct (110), for example of the winding type, which is intended for the transport of hydrocarbons. The rigid duct (110) comprises two coaxial tubes (116, 118) which are separated by an annular space (114). According to the invention, the spacing and centring device is housed in the aforementioned annular space (114) in order to maintain a distance between the two coaxial tubes (116, 118). The inventive device consists of an element (130) which is made from a material having low heat conductivity and comprising an aerogel, said element being at least partially covered with a casing (132) of polymer-type plastic material.</p> |
