CAJ | 학술논문

为提高旋转煤粉分离器的性能，以中速磨煤机直叶片旋转煤粉分离器结构为依据，设计了一种变截面弯扭动叶旋转煤粉分离器。利用CFD软件对该分离器进行了数值模拟，并运用UG NX软件设计了该分离器的参数化几何模型，建立了转子叶轮应力场分析数学模型，得到了转速在70~110 r/min时转子叶轮内部应力和应变的分布情况及相关规律，可为旋转煤粉分离器的设计、加工提供指导。
위제고선전매분분리기적성능，이중속마매궤직협편선전매분분리기결구위의거，설계료일충변절면만뉴동협선전매분분리기。이용CFD연건대해분리기진행료수치모의，병운용UG NX연건설계료해분리기적삼수화궤하모형，건립료전자협륜응력장분석수학모형，득도료전속재70~110 r/min시전자협륜내부응력화응변적분포정황급상관규률，가위선전매분분리기적설계、가공제공지도。
In order to improve the performance of rotary pulverized-coal classifier,a new rotary coal classifi-er with variable cross section and bowed-twisted rotor blades was designed,on the basis of structural fea-tures of rotary classifier with straight blades for medium-speed pulverizer.The CFD software was employed to conduct simulation on this new classifier.Moreover,by the UG NX software,the parametric geometric model of this classifier was designed and the stress field of the rotor impeller analysis mathematical model was established.Thus,the rotor impeller internal stress and strain distribution was obtained,when the ro-tor speed was between 70 r/min and 110 r/min,so the feasibility of manufacturing was demonstrated.