本文介绍几种用于不锈钢应用杜瓦的铟密封结构。为了减少应用杜瓦的漏热,把目前常用的大管颈撑吊改为小管颈撑吊,如此,我们设计了一种可靠的,可拆卸的低温法兰铟密封的连接。考虑到保证杜瓦内部安装的方便,冷液氮管必须由真空空间通过顶板,我们设计了液氮管通过顶 This article describes several indium seal structures for Dewar for stainless steel applications. In order to reduce the heat loss of the Duva, we changed the commonly used large tube neck suspension to the small tube neck suspension. In this way, we designed a reliable, detachable low temperature flanged indium seal connection. Taking into account to ensure the installation of Dewar internal convenience, cold liquid Nitrogen pipe must pass from the vacuum space through the roof, we designed the liquid nitrogen pipe through the top