新型高性能弯扭动叶旋转煤粉分离器特性研究  

Characteristic Study on High-performance Rotary Type Pulverized Coal Classifier with Bowed-Twisted Moving Blades

作　　者：闫顺林[1] 杨玉环[1] 

机构地区：[1]华北电力大学能源动力与机械工程学院,保定071003

出　　处：《动力工程学报》2012年第2期140-146,共7页Journal of Chinese Society of Power Engineering

摘　　要：为了提高旋转煤粉分离器的性能,提出了一种新型弯扭动叶旋转煤粉分离器,并采用Flu-ent软件对其进行了数值模拟,同时与直叶旋转煤粉分离器的模拟结果进行了比较.结果表明:弯扭动叶旋转煤粉分离器流场分布较均匀,具有较好的分离特性、较低的通风阻力及转子功耗,为旋转煤粉分离器的制造及改造提供了新的选择途径,对分离器分离效率的提高及电厂的节能降耗有重要意义.To improve the performance of rotary type pulverized coal classifier,a new rotary classifier with bowed-twisted moving blade was proposed,to which numerical simulation was carried out with Fluent software,while a comparison made to simulated results between the new one and traditional straight-blade classifier.Results show the rotary type pulverized coal classifier with bowed-twisted moving blades has evenly distributed flow field,better separation characteristics,lower air resistance and less rotor power consumption,which therefore may be taken as a good choice for manufacture and retrofit of rotary type pulverized coal classifiers.It is of great significance to develop such a classifier for efficiency improvement and energy saving of relevant power plants.

关 键 词：煤粉制备 旋转煤粉分离器 弯扭动叶 特性研究 数值模拟 

分 类 号：TK223.2[动力工程及工程热物理—动力机械及工程]