Abstract：The variation of inlet pressure can affect the safety, reliability and stability of the water lubricated bearing rotor system in a seawater desalination high-pressure pump. In this study, numerical simulations were carried out on the shaft orbits of dry and wet rotors under different inlet pressures to clarify the axial force and circumferential pressure distributions. Additionally, the shaft orbits and circumferential pressure fluctuation were measured when the water lubrication bearings were in operation at different inlet pressures based on a water lubricated bearing test stand for seawater desalination high-pressure pumps designed and developed in the first-phase of a project. The simulated and measured results showed that the influence of inlet pressure on the liquid film formation was more substantial in the dry rotor. For the wet rotor system, however, due to the damping factor in the system, the influence of the inlet pressure on the axis orbit was smaller, but the overall variation trend was similar to that of the dry rotor. For the system as a whole, the operation of the rotor system was stable as the inlet pressure was at 0.2MPa. This study has provided some research basis for improving the operational stability of the rotor system in a seawater desalination high-pressure pump further.
郑建波, 叶晓琰*, 胡敬宁, 佘旭南. 不同进水压力下水润滑轴承润滑特性试验研究[J]. 排灌机械工程学报, 2018, 36(7): 599-606.
ZHENG Jianbo, YE Xiaoyan*, HU Jingning, SHE Xunan. Study on lubrication characteristics of water lubricated bearings under different inlet pressures. Journal of Drainage and Irrigation Machinery Engin, 2018, 36(7): 599-606.
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