变频器输出异常引起风机振动停机的故障分析

doi:10.19698/j.cnki.1001-6171.20226047

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摘要

在水泥生产实践中，一台功率为280kW的高压循环风机轴承座轴向振动值突然上升，联轴器处异响增大，采取更换风机轴承、对电动机和风机作对中调整及清理叶轮积灰等措施后，风机振动值仍未恢复到正常值。通过从机械及电气两方面入手排查设备故障原因，确定是变频器内部A1功率单元逆变器触发不到位，变频器三相输出电流不平衡，联轴器运行不同步所致。更换A1功率单元后，三相电流输出平衡，风机振动值恢复到正常水平。

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	郑磊

关键词: 循环风机轴承座振动异常变频器逆变器

Abstract:

In cement production practice, the axial vibration value of bearing pedestal of a 280kW high pressure circulating fan suddenly raised, and the abnormal noise at the coupling increased. After taking measures including replacing the fan bearing, aligning the motor and fan, and cleaning the dust on the impeller, the fan vibration value has not recovered to the normal value. Through the mechanical and electrical aspects, the causes of equipment failures are investigated. It is determined that the trigger of A1 power unit inverter in the inverter is not in place, the three-phase output current of the inverter is unbalanced, and the coupling is not synchronized. After replacing the A1 power unit, the three-phase current output is balanced, and the fan vibration value returns to the normal level.

Key words: circulating fan bearing pedestal abnormal vibration frequency converter inverter

收稿日期: 2022-03-28 修回日期: 2022-11-25 出版日期: 2022-11-25 发布日期: 2022-11-25 整期出版日期: 2022-11-25

ZTFLH:

TM921.51

引用本文:

郑磊. 变频器输出异常引起风机振动停机的故障分析[J]. 水泥技术, 2022, 1(6): 47-50.
ZHENG Lei. Failure Analysis of Fan Vibration Shutdown Caused by Abnormal Inverter Output. Cement Technology, 2022, 1(6): 47-50.

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http://www.cemteck.com/CN/10.19698/j.cnki.1001-6171.20226047 或 http://www.cemteck.com/CN/Y2022/V1/I6/47

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