单板式轴流通风机叶片断裂原因及改进方法  

Fracture Reason and Improvement Method of Single-Plate Axial Flow Fan Blade

作　　者：谢云川 黄雪刚 赵林 Yun-chuan Xie;Xue-gang Huang;Lin Zhao(ZheJiang ShangFeng Speicial Blower Industrial Co.,Ltd.)

机构地区：[1]浙江上风高科专风实业股份有限公司

出　　处：《风机技术》2021年第S01期49-53,共5页Chinese Journal of Turbomachinery

摘　　要：单板式轴流通风机叶片断裂,通常影响地铁通风机的安全。本文通过三坐标激光扫描仪对实际制作的叶轮进行测绘再反向建模的方法,对叶轮进行改进。研究结果表明,经超速试验后的叶轮没有发生明显变形。这说明改进后的叶轮具有足够的强度和刚度,不会出现叶片的变形或开裂。因此,改进方案可行。The blade fracture of single-plate axial flow fan often affects the safe operation of subway fans.A threecoordinate laser scanner is used to survey and map the actual impeller and then reverse the impeller modeling to improve the impeller.The results of the study shows that the impeller doesn't deform significantly after the overspeed test.This shows that the improved impeller has sufficient strength and rigidity that the blade won't deform or crack.Therefore,this improvement plan is feasible.

关 键 词：单板式 轴流叶片 疲劳断裂 强度分析 

分 类 号：TH432.1[机械工程—机械制造及自动化] TK05[动力工程及工程热物理]