摘 要：自动平衡可以有效的延长转子系统的运行周期。本文针对常规注液式自动平衡装置在工作一段时间后会由于腔内液体注满无法排出而失去平衡能力以及在首次注液时可能“错调”将导致振动增大的问题，提出一种可连续注排液式自动平衡系统并研究其关键技术。在转子运行过程中，控制系统根据预先测得的转子的影响系数，运用实时测得的振动信号直接计算消除振动所需要的平衡量，从而避免了首次注液振动量可能增大的问题，而不受控的排液可以保持平衡盘的平衡能力。在流量控制方面本论文创新性的提出了一种蠕动泵组流量控制系统，可以实现流量的精确控制。同时针对不同应用环境，将该平衡系统设计成具备注排液式和单注液式两种工作方式。通过在立式悬臂转子实验台上进行实验研究，结果表明，连续注排液式自动平衡装置能有效降低转子振动，并能在振动发生瞬时变化时快速反应。

Abstract：Automatic balance of rotor is the key technology of the long running of equipments, and normal injection balance device will lose balance ability after some working cycles without dripping the liquid in the chamber, and the vibration will increase with the fist liquid injection. To improve the disadvantage of normal injection balance device, the continuously dripping liquid-injection automatic balance device were developed. The balance device can change the mass distribution of rotor with injecting liquid to right chamber, and it’s balance capability can’t be reduced by dripping. If this balance device applied in equipments which the vibration phase varying, it has two advantages to normal injection balance head, that are fast response to varying vibration and the balance ability not lost. Construct a vibration self-recovery system using the device. The system can analyze the vibration signal on real time and output the unbalance mass and it’s phase, make sure the balance device’s installation position, to balance the unbalance directly by inject liquid, so the rotor vibration will fall in a short time. The balance device was installed on a high gravity machine which is a typical vertical cantilever rotor machine. The experiment results show that the continuously dripping liquid-injection balance device can decrease the vibration effectively, and response to the phase shift in a short time, satisfy the safe long ruing of equipment.