Law of weights transfer based on doublesided dynamic balance
                                               ZHANG Zuchen, HE Lidong, WAN Fangteng, LI Zhiwei, CHEN Zhao
(Engineering Research Center of Chemical Technology Safety Ministry of Education,Beijing University of Chemical Technology, Beijing 100029, China)

Abstract: Aiming at the problem of preselection of the counterweight plane in the dynamic balancing operation of multistage rotor system, the influence mechanism of the counterweight size changing with the counterweight plane in the dynamic balancing method of the twosided influence coefficient was studied. In addition, the rule of the change of counterweight was summarized, and the optimal selection position of the counterweight plane was put forward. Tenplane rotor model was established by rotor dynamics software DyRoBeS, and the rule of the change of counterweight with the transfer of counterweight plane was analyzed and simulated by virtual dynamic balance method. A tenwheeldisc rotor experiment table was built to test the dynamic balancing effect under different unbalance conditions and different counterweight planes. The results indicate that when the balancing speed is selected near the first critical speed for dynamic balancing, the twostage discs farthest apart from each other in the rotor system are selected as the counterweight plane by the law of balance weight under different unbalance conditions, and the balancing weight is the least. Moreover, the effect of vibration reduction is obvious under the first critical speed.

Key words: doublesided influence coefficient method; counterweight law; virtual dynamic balance