PROCESS AND MACHINE FOR THE MANUFACTURE OF A MULTILAYER THERMAL INSULATION AROUND AND ALONG A SOLID PASSAGE, AND CRYOGENIC TANK THEREFOR

摘要

A reservoir for a cryogenic fluid comprises a vessel with an elongated filling neck. It is thermally insulated by means of a band of thermal insulating material wound around the neck and the vessel in a plurality of superimposed layers each of which has an edge adjacent the neck and an edge remote from the neck. A cord is helically wound around the neck in a plurality of turns. Each turn of the cord contacts the adjacent edge, as defined above, of each layer.