| 摘要 |
PURPOSE:To obtain the sampling instrument for liquid metal which has no leak- in of oxygen and high reliability and eliminates the need to consider a countermeasure to a high vacuum by blowing inert gas which contains a small amount of heated liquid metal to a sampling pot. CONSTITUTION:The inert gas flows in a vapor trap from a pipe 34 for suction and is cooled to remove the liquid metal, and then the cooled inert gas is passed through a pipe 33 and heated by a heater 28 up to its distillation temperature. Then, the inert gas which is heated at high temperature and contains a small amount of liquid metal is passed through a pipe 35 and a tee 37 and blown to the sampling pot to return into a container 1. This natural convection vaporizes the liquid metal in the sampling pot 4 efficiently and the metal is trapped by the mesh part of the vapor track 8. The heater 28 and preheaters 23-27, and 39 are stopped to cool the sampling pot 4, and the flange 3 is detached from an outlet and the sampling pot 4 is removed to take an atomic absorption analysis of the sodium oxide in the pot 4, measuring the amount of oxygen. |
