热力发电2017，Vol.46Issue(10)：111-118,8.DOI:10.3969/j.issn.1002-3364.2017.10.111
MB型风扇磨煤机提升压头影响因素分析
Analysis on factors affecting the promotion pressure head of MB fan mill
摘要
Abstract
Through the cold and hot state tests on the MB type fan mill,the correlation among ventilation volume,mill output,negative pressure of the entrance,pressure of the mill outlet and the promotion pressure head in pure air and air with coal powder states was obtained,and the factors affecting the promotion pressure head of the MB type fan mill were investigated,thus the effects of key indexes such as mill output,ventilation volume and HGI index of the coal on the MB type fan mill's promotion pressure head were obtained.The cold test results show that,with the increase of mill outlet ventilation,the mill entrance resistance decreased,the outlet resistance increased,and the increase of the mill outlet resistance was larger than the decrease of the entrance resistance,so the promotion pressure head of the mill declined.The hot test results show that,the promotion pressure head of the mill increased with the mill outlet ventilation,and the negative effect of the mill output on the promotion pressure head was greater than the results calculated by current calculation method.The ventilation and grinding characteristics of the MB type fan mill has great difference but with a certain similarity with that of the S type fan mill.The conclusion can provide technical reference for design and operation of the MB type mill.关键词
MB型风扇磨煤机/褐煤/通风量/出力/提升压头/通风特性/研磨特性/修正系数Key words
MB type fan mill/lignite/ventilation/output/promotion pressure head/ventilation characteristics/grinding characteristics/correction coefficient分类
能源科技引用本文复制引用
刘家利,杨忠灿,贾晓艳,何仰鹏,王桂芳,王志超..MB型风扇磨煤机提升压头影响因素分析[J].热力发电,2017,46(10):111-118,8.基金项目
中国华能集团公司总部科技项目(HNKJ15-H11) （HNKJ15-H11）
国家能源应用技术研究及工程示范项目资助(NY20130303)Science and Technology Project of China Huaneng Group (HNKJ15-H11) （NY20130303）
Research and Engineering Demonstration Project of National Energy Application Technology(NY20130303) （NY20130303）
