Abstract:In order to assess the reliability of liquid film in the water lubricated bearings of a multi-stage high-pressure pump for desalination and to explore the mechanism for bearing a load as well as the factors affecting the mechanism, the pressure distribution in the liquid film was analyzed by solving the two-dimensional steady Reynolds equation with finite difference method and successive over relaxation(SOR)scheme for the discretized linear equations in Matlab. It was shown that the pressure in the liquid film was distributed nonlinearly along the circumferential direction and had a maximum peak at a certain position, but the pressure distribution was parabolic along the axial direction. The pressure profile was affected by length-diameter ratio and eccentricity, particularly, the pressure increased with them. These results are useful for design and selection of the water lubricated bearings of a high-pressure pump for desalination in million-ton processing capacity. It was conformed that the designed bearings have an acceptable reliability and a satisfactory lubrication condition and a sufficient sustainability for loads.
胡敬宁, 薛岩, 张德胜, 叶晓琰, 谷任归, 汪靖. 海水淡化高压泵水润滑轴承液膜压力分布[J]. 排灌机械工程学报, 2014, 32(3): 235-241.
Hu Jingning, Xue Yan, Zhang Desheng, Ye Xiaoyan, Gu Rengui, Wang Jing. Pressure distribution in liquid film in water lubricated bearings of high-pressure pump for desalination. Journal of Drainage and Irrigation Machinery Engin, 2014, 32(3): 235-241.
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