【摘要】 转子失衡是现场机组转子的常见故障之一。究其故障起因可将转子失衡从理论上划分为力不平衡和力偶不平衡两种类型 ,而在转子的实际运行过程中 ,这两种失衡状态往往是相互耦合在一起共同对转子的不平衡响应发挥作用的 ,此特性无疑给现场转子不平衡响应的识别和诊断工作 ,以及转子的现场动平衡工作带来了极大的困难。本文基于全息谱技术 ,通过对失衡转子的工频振动进行再分解 ,从而在理论上得到了两种失衡状态的动力响应特征。试验结果表明 ,应用本文提出的识别指标得到的理论计算结果与试验结果完全吻合 ,识别指标可对两类失衡转子在不同运行工况下的动力响应特征做出准确、可靠的描述。这一研究结果将对现场转子主导失衡故障类型的诊断、故障严重程度的评估及现场转子的动平衡工作产生重要影响。更多还原

【Abstract】 Imbalanced rotors are often found in industry filed.According to their failure mechanism,the failure of this kind can be ascribed to such two sources,i.e.the force imbalance and the torque imbalance. However,these two sources are usually coupled during the real operation of the rotor, it is no doubt that this brings great difficulty to the monitoring and diagnosing work of the imbalanced rotor. In order to solve this problem,the vibration at the rotating speed ofthe rotor may be re decomposed with the aid of the holo spectum analysis method,so that the two characteristics,which describing the dynamic responses of the rotor respectively at two kinds of imbalance states, are obtained. The experiment results fully prove that the characteristics obtained in this paper can correctly describe the dynamic response of imbalanced rotors under my operation contribution, and they would make great contribution to the dynamic balancing work of the imbalanced rotor.更多还原