针对质量不平衡引起机组振动超标,严重影响设备的安全稳定运行的问题,设计了一种气压液式自愈调控系统,能够实时在线抑制转子的不平衡振动,执行器的设计核心在于利用压缩气体驱动平衡液实现质量转移,所以气体驱动力的计算尤为重要.通过综合考虑离心力条件、液体流速条件、连通管中心点条件,计算储液腔内不同液体量对应的理论最小气体驱动力,通过与两种气体驱动力工况下的液体转移试验数据进行综合分析得到执行器的实际最小驱动力,并通过试验验证了自愈调控系统的有效性.自愈调控系统实现将待平衡转子的不平衡振动从13 μm降至2.1 μm,振幅降低比例达到80%以上.
In view of the problem that the unbalance of mass causes the unit vibration to exceed the standard,which seriously affects the safe and stable operation of the equipment,a pneumatic-liquid self-recovery control system was designed,which can restrain the unbalance vibration of the rotor online in real time.The core of the actuator design is to use the compressed gas to drive the balance liquid to achieve mass transfer,so the calculation of the gas driving force is particularly important.By comprehensively considering the conditions of centrifugal force,liquid flow speed and connecting pipe center point,the actual minimum driving force of the actuator was obtained by comprehensive analysis with the experimental data of liquid transfer under the conditions of two gas driving forces,and the effectiveness of the self-recovery control system was verified by experiments.The self-recovery control system can reduce the unbalance vibration of the rotor to be balanced from 13μm to 2.1μm,and reduce the amplitude by more than 80%.