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为了防止或减轻汽轮机末级动叶片的严重水蚀 ,利用空气 水膜两相流动实验装置 ,在不同条件下对平板空心叶片上的去湿缝隙宽度与去水效率的关系进行了大量的实验研究 ,得到了缝隙宽度与去水效率的关系曲线 .实验结果表明 ,缝隙去水效率并不是简单地随着缝隙宽度的增大而增大 ,而是存在一个去水效率较低的缝隙宽度范围 .在本实验条件下 ,相应去水效率较低的缝隙宽度为 1 0～ 1 5mm .
In order to prevent or reduce the serious water erosion of the last stage rotor blades of the steam turbine, a large amount of experimental studies were carried out on the relationship between the width of the dehumidification slit and the water removal efficiency under different conditions by using the air-water two-phase flow experimental device, The relationship between the slit width and the water removal efficiency is obtained.The experimental results show that the water removal efficiency of the slit does not simply increase with the increase of the slit width but has a range of slit width with a low water removal efficiency Under the experimental conditions, the corresponding slit width of dewatering efficiency is 10 ~ 1 5mm.