一般氦液化器向液氦杜瓦瓶输送液氦时,液化器输液管与外输液管之间相互连接是用医用乳胶管连接的,在连接和脱接操作过程中,往往由于配合不当和润滑等原因,感到十分不便。因此,我们制作了一种具有径向密封接头和自动止逆阀的液氦输液管,其结构如图1。由 General helium liquefier When delivering liquid helium to a liquid helium Dewar, the connection between the liquefier transfusion tube and the outer transfusion tube is with a medical latex tube. During the connection and disconnection operations, the helium liquefier is often mishandled and lubricated And other reasons, I feel very inconvenient. Therefore, we made a liquid helium infusion tube with a radially sealed fitting and an automatic check valve, the structure of which is shown in FIG. 1. by