F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
F16L 59/06 (2006.01) F16L 59/14 (2006.01) H01B 12/14 (2006.01) H01B 13/00 (2006.01)
Patent
CA 2563288
A vacuum heat insulation tube is a double structure tube having the inner tube and the outer tube. The gap between the inner tube and the outer tube is vacuum drawn. Between the inner tube and the outer tube is a gas adsorption member. The gas adsorption member has a getter material capable of adsorbing gas, a case for vacuum-sealing the getter material, and a breaking member deformed at a predetermined temperature to break the case. When the case is broken by the breaking member to be released from the sealed state, the getter material adsorbs gas that is present in the gap between inner tube and the outer tube. This enables to reduce vacuum processing time and to maintain a high degree of vacuum for a long period. A super-conductive cable having this vacuum heat insulation tube is also provided.
L~invention concerne un tube calorifuge à vide consistant en une double structure, comportant un tube intérieur et un tube extérieur. On fait le vide dans l~espace séparant lesdits tubes. Un membre d'adsorption de gaz est placé entre le tube intérieur et le tube extérieur, ledit membre comprenant un matériau getter capable d~adsorber du gaz, une enceinte pour sceller le matériau getter sous vide et un membre de rupture qui se déforme à une température prédéfinie afin de rompre l~enceinte. Lorsque l~enceinte est rompue et que le vide est cassé, le matériau getter adsorbe le gaz présent dans l~espace entre le tube intérieur et le tube extérieur. Ce système permet de réduire la durée nécessaire à l~établissement du vide et de maintenir un degré poussé de vide pendant une longue période. L~invention concerne également un câble super-conducteur équipé dudit tube calorifuge à vide.
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Sumitomo Electric Industries Ltd.
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