At the same time the number of holes for liquid flowing , gas flowing and blocked to the number of total holes was defined as liquid flowing ratio , gas flowing ratio and blocked ratio . the experiment was made with in - diameter 500mm column using water - air system , the ratio was first delected in detail by multi - path conductivity gauge for the compound tray with free area 20 % and 25 % respectively 采用多路電導(dǎo)測試儀,在直徑500mm的冷模塔內(nèi),以空氣-水為介質(zhì),首次較系統(tǒng)地測量了開孔率為20和25的復(fù)合塔板的通氣、通液和阻塞篩孔的數(shù)量比例,獲得了通氣率、通液率和阻塞率隨氣液變化的基本規(guī)律。