Abstract：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.
2011, Vol. 30 
