高真空多层绝热低温容器真空丧失后的传热试验

摘要

One of the worst accidents that may occur in a high-vacuum-multilayer-insulation (HVMLI)cryogenic tank is a sudden, catastrophic loss of insulating vacuum ( SCLIV), which may cause heat transfer of the tank increasing immediately. The influence of SCLIV on heat transfer of a HVMLI cryogenic tank was studied on an industrialized HVMLI cryogenic calorimetric with liquid nitrogen as the medium. It is found that the heat transfer performance of HVMLI cryogenic tank after SCLIV are strong relevant to the type of gas leaking into insulation jacket and the numbers of insulation layers.%利用一个工业化的高真空多层绝热低温量热器,以液氮为介质研究了真空突然丧失对高真空多层绝热低温容器漏热量的影响.主要研究了低温量热器绝热层的变化及破空气体(空气和干燥氮气)的不同对真空丧失后低温容器漏热量的影响,指出绝热层数和破空气体种类都是影响真空丧失后低温容器漏热量的重要因素.