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金川集团有限公司精炼厂某生产项目的1号文丘里风机在2010年5月试运行时,多次出现振动值随转速增大,风机被迫停机的现象,使生产不能正常进行,影响了该项目的投产。1风机故障诊断该风机为离心式两级风机,电动机功率为160kW,电动机额定转速为2971r/min(50Hz),风机进口额定流量120m3/min,升压40kPa。为了确定风机运行时的振动源和振动频率,在电动机底座和叶轮轴承座处进行了振动测试。测试时风机供电频率为40Hz(通过变频器设定)。
Jinchuan Group Co., Ltd. refinery a Venturi Venturi No. 1 production project in May 2010 trial run, many times with the vibration speed value increases, the fan was forced to shut down the phenomenon that the production can not be normal, affecting the Project put into operation. A fan fault diagnosis The fan is a centrifugal two-stage fan, the motor power of 160kW, motor rated speed of 2971r / min (50Hz), the fan inlet rated flow 120m3 / min, boost 40kPa. In order to determine the vibration source and vibration frequency during fan operation, vibration tests were performed at the motor base and impeller housings. Test fan power supply frequency of 40Hz (set by the inverter).