振动信号分析在冷轧厂常见设备故障诊断中的应用
发布时间：2018-10-26 21:09
【摘要】：冷轧厂现场的旋转机械设备对于稳定生产至关重要,一旦出现故障,将严重制约现场生产任务的完成,同时,由于旋转机械设备的振动信号不平稳、故障原因多种多样、故障征兆隐蔽不易发现、故障原因错综复杂等原因,故障与征兆之间不可能完全一一对应,实际从事现场设备振动分析诊断时,应充分掌握所测设备的各种信息,灵活运用所学的振动原理和测量方法,将实际经验与专业知识有机的融合在一起,才能有效地实现故障诊断。 本文在振动故障诊断理论的基础上,分析了冷轧厂常见旋转设备的几种典型故障信号。结合有关案例,对不平衡故障,不对中故障,滚动轴承故障,齿轮故障等进行了分析。在实际工作中,应高度重视振动的发展变化过程,对于振动突然增大、增大后又减小的情况,往往预示了故障的发展加快,应加强监测；虽然目前滚动轴承诊断标准中以振动速度为依据,振动加速度仍然是进行滚动轴承诊断的重要参数。
[Abstract]:The rotating machinery equipment in the field of cold rolling mill is very important for the stable production. Once there is a fault, it will seriously restrict the completion of the field production task. At the same time, the vibration signal of the rotating machinery equipment is not steady, and the reasons for the failure are various. The hidden fault symptoms are difficult to find, the causes of the faults are complicated and so on. It is impossible to completely correspond the fault and the symptoms. When actually engaged in the vibration analysis and diagnosis of the field equipment, we should fully grasp all kinds of information of the equipment measured. In order to realize fault diagnosis effectively, the vibration principle and measurement method are used flexibly, and the practical experience and professional knowledge are combined together in order to realize the fault diagnosis effectively. Based on the theory of vibration fault diagnosis, several typical fault signals of common rotating equipment in cold rolling mill are analyzed in this paper. Combined with relevant cases, this paper analyzes the unbalanced fault, misalignment fault, rolling bearing fault, gear fault and so on. In the actual work, we should attach great importance to the development and change process of vibration. For the situation that the vibration increases suddenly, increases and then decreases, it often indicates that the development of faults is speeding up, and the monitoring should be strengthened. Although the current diagnostic criteria for rolling bearings are based on vibration velocity, vibration acceleration is still an important parameter in the diagnosis of rolling bearings.
【学位授予单位】：东北大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH165.3
本文编号：2296950
[Abstract]:The rotating machinery equipment in the field of cold rolling mill is very important for the stable production. Once there is a fault, it will seriously restrict the completion of the field production task. At the same time, the vibration signal of the rotating machinery equipment is not steady, and the reasons for the failure are various. The hidden fault symptoms are difficult to find, the causes of the faults are complicated and so on. It is impossible to completely correspond the fault and the symptoms. When actually engaged in the vibration analysis and diagnosis of the field equipment, we should fully grasp all kinds of information of the equipment measured. In order to realize fault diagnosis effectively, the vibration principle and measurement method are used flexibly, and the practical experience and professional knowledge are combined together in order to realize the fault diagnosis effectively. Based on the theory of vibration fault diagnosis, several typical fault signals of common rotating equipment in cold rolling mill are analyzed in this paper. Combined with relevant cases, this paper analyzes the unbalanced fault, misalignment fault, rolling bearing fault, gear fault and so on. In the actual work, we should attach great importance to the development and change process of vibration. For the situation that the vibration increases suddenly, increases and then decreases, it often indicates that the development of faults is speeding up, and the monitoring should be strengthened. Although the current diagnostic criteria for rolling bearings are based on vibration velocity, vibration acceleration is still an important parameter in the diagnosis of rolling bearings.
【学位授予单位】：东北大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH165.3
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