一次风机进口消音器风道异常振动故障诊断及治理  

Diagnosis and Treatment of Abnormal Vibration of the Imported Muffler of the primary fan

作　　者：卢福平 鲁跃峰 李昊燃[2] LU Fu-ping;LU Yue-feng;LI Hao-ran(Shangwan Thermal Power Plant of Beijing Guodian Electric Power Co.,Ltd.,Ordos 017209,China;Xi an Thermal Power Research Institute Co.,Ltd.,Xi an 710049,China)

机构地区：[1]北京国电电力有限公司上湾热电厂,内蒙古鄂尔多斯017209 [2]西安热工研究院有限公司,陕西西安710049

出　　处：《节能技术》2023年第2期188-192,共5页Energy Conservation Technology

摘　　要：针对某机组一次风机进口消音器管道振动剧烈的问题,通过理论计算、振动测试、现场风机性能试验、数值模拟计算等多种方法,确定了主要原因,提出治理方案。研究结果表明:一次风机进口风道振动前均发生了一次风机落入不稳定区的现象,即一次风机落入不稳定区是一次风机进口风道振动的主要原因。根据提出的优化运行方案:降低风机调节门开度,适当提高风机运行转速,使风机运行工况点远离不稳定运行区域,解决了消音器风道振动问题。Against the problem that severe vibration of the imported muffler of the primary fan,the main causes were determined and the treatment scheme was proposed through theoretical calculation,vibration test,on-site fan performance test,numerical simulation calculation and other methods.The results show that the phenomenon of the fan falling into the unstable zone occurs before the vibration of the inlet air duct,that is,the falling of the primary fan into the unstable area is the main cause of the vibration of the inlet air duct.According to the proposed solution:reduce the opening degree of the fan adjustment door,appropriately increase the operating speed of the fan,and keep the operating condition point of the fan away from the unstable operation area,which can successfully solve the problem.

关 键 词：离心风机 变频运行 消音器风道 振动 

分 类 号：TK14[动力工程及工程热物理—热能工程]