Abstract:Water lubricated bearings with three different radial clearances were designed and their shaft centerline orbits were tracked under dry and wet running conditions to identify effects of radial clearance on the stability of water lubricated bearings-rotor system of high-pressure pumps in sea water desalination process based on experimental and numerical simulation methods. The result shows that with the increase of radial clearance, the whirl center of the dry rotor obviously shifts to the negative X and Y axis directions. However, the variation of whirl center of the wet rotor is not dominated because of the increasing damping in the system. The whirl amplitude of the wet rotor is considerably larger than that of the dry rotor. The numerically calculated results are well in agreement with the experimental data. The stability of the dry rotor system was poorer at a larger radial clearance, the lubrication effect will be better, if the radius clearance is 0.1 mm. This study provides a necessary reference for design parameters optimization of water lubricated bearings of high-pressure pumps in sea water desalination process.
叶晓琰*,杨旭林,胡敬宁,耿浩涵. 半径间隙对水润滑轴承轴心轨迹的影响[J]. 排灌机械工程学报, 2019, 37(9): 788-792.
YE Xiaoyan*,YANG Xulin, HU Jingning,GENG Haohan. Study on influences of radial clearance on shaft centerline orbit of water lubricated bearings. Journal of Drainage and Irrigation Machinery Engin, 2019, 37(9): 788-792.
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