【摘要】 应用γ射线吸收技术测定了导向筛板和普通筛板上气液两相密度分布;对工况的转变条件作了实验研究;以雾沫夹带率的极值点为工况转变的判据,认为两个极点之间的操作属于混合型的过渡工况;提出了清液深度h₁,平均泡沫密度（?）以及第一工况转变点的数学关联式.更多还原

【Abstract】 The vertical density profiles of the gas-liquid mixture on the guide-sieve trays and normal sieve trays were measured through gamma ray absorption technique. The effects of factors on the mutual transition of different flow regimes were studied. It is found that inflection points of entrain-ment rate can be regarded as the criteria of transition of the flow regimes and the opretational range between two inflection points as being the transition regime. Mathematical correlations for tray hold-up(or clear liquid height), average dispersion density and transition of flow regimes are given.更多还原