Pressure fluctuation characteristic of mechanical face sealing clearance of spiral groove in upstream pumping
Chen Huilong1, Fu Jie1, Li Shulin2, Zhao Binjuan1, Zou Qiang1, Liu Jinfeng1
1.School of Energy and Power Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China; 2.Nanjing Engineering Institute of Aircraft Systems, AVIC Jincheng, Nanjing, Jiangsu 211106, China
Abstract：To analyze the interaction of the rotating and static parts and the pressure fluctuation of micro clearance flow field in the upstream pumping mechanical seal, unsteady simulation was conducted to calculate the flow field on multiple working conditions based on the sliding mesh technique. The distribution of velocity and pressure inside the model at steady and unsteady states were studied. The time domain and frequency spectrum characteristics of the pressure fluctuation at different rotating speeds were also revealed. The simulation results were compared with the experimental results. Results show that internal flow field was displayed in detail through the simulation method and pressure pulsation at different speeds changes periodically because of the influence of rotating-static coupling. The pressure fluctuation,as a very important characteristic of the unsteady flow, is affected by the groove frequency and the shaft frequency.
陈汇龙, 付杰, 李述林, 赵斌娟, 邹强, 刘金凤. 螺旋槽上游泵送机械密封端面间液膜压力脉动特性[J]. 排灌机械工程学报, 2015, 33(6): 504-509.
Chen Huilong, Fu Jie, Li Shulin, Zhao Binjuan, Zou Qiang, Liu Jinfeng. Pressure fluctuation characteristic of mechanical face sealing clearance of spiral groove in upstream pumping. Journal of Drainage and Irrigation Machinery Engin, 2015, 33(6): 504-509.
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