|
|
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.
|
Received: 06 November 2014
|
|
|
|
[1]彭建,鄢新华,左孝桐,等. 上游泵送密封研究[J]. 流体机械,1998,26(2):3-8. Peng Jian, Yan Xinhua,Zuo Xiaotong,et al. Study of upstream pumping mechanical seal [J]. Fluid Machine-ry,1998,26(2):3-8.(in Chinese)[2]王晓彦,余捷,汤东妹. 不同槽型上游泵送机械密封性能比较[J]. 石油化工设备, 2013,42(2):19-22. Wang Xiaoyan,Yu Jie,Tang Dongmei. Performance comparisons of different grooves of upstream pumping mechanical seal[J]. Petro-Chemical Equipment,2013,42(2):19-22.(in Chinese)[3]宋鹏云. 螺旋槽上游泵送机械密封性能影响因素分析[J]. 润滑与密封,2000(3):50-53. Song Pengyun. Analysis of the fundamentals of upstream pumping mechanical seal[J].Lubrication Engineering, 2000(3):50-53.(in Chinese)[4]Faria M T C, Miranda W M. Pressure dam influence on the performance of gas face seals[J]. Tribology International, 2012, 47: 134-141.[5]Gabriel R P. Fundamentals of spiral groove contacting face seals [J]. Lubrication Engineering, 1994,35(7):367-375.[6]李贵勇,郝木明,闫明强. 螺旋槽上游泵送机械密封密封特性数值计算[J]. 润滑与密封,2010,35(9):56-59. Li Guiyong, Hao Muming,Yan Mingqiang. Numerical computations of the seal performance of upstream pumping mechanical seals with spiral grooves [J].Lubrication Engineering,2010,35(9):56-59.(in Chinese)[7]廖和滨. 机械密封环温度场/应力场的数值模拟及实验研究[D].福州:福州大学化学化工学院,2005.[8]陈汇龙,刘玉辉. 基于动网格的上游泵送机械密封性能参数分析[J]. 排灌机械工程学报,2012,30(5):583-587. Chen Huilong, Liu Yuhui. Analyzing performance parameters of upstream pumping mechanical seals based on dynamic mesh technique[J].Journal of Drainage and Irrigation Machinery Engineering,2012,30(5):583-587.(in Chinese)[9]陈汇龙, 王强, 李雯瑜, 等. 基于Fluent的螺旋槽上游泵送机械密封三维微间隙流场数值模拟[J].润滑与密封, 2012, 37(2):16-19. Chen Huilong, Wang Qiang, Li Wenyu,et al. Numerical simulation of 3-D flow in upstream pumping mechanical seals with spiral grooves based on Fluent [J]. Lubrication Engineering, 2012, 37(2):16-19.(in Chinese)[10]Mayer E.机械密封[M].北京:化学化工出版社,1981.[11]Pavesi G,Cavazzini G,Ardizzon G.Time-frequency cha-racterization of the unsteady phenomena in a centrifugal pump[J]. International Journal of Heat and Fluid Flow,2008,29(5):1527-1540.[12]魏清顺,刘在伦.面积比原理在潜水泵设计中的应用研究[J].流体机械,2009,37(9):23-26. Wei Qingshun,Liu Zailun.Application of area-ratio principle in diving pump design[J].Fluid Machinery,2009,37(9):23-26.(in Chinese)[13]孙见君,魏龙. 机械密封端面摩擦扭矩的测试技术[J]. 无锡商业职业技术学院学报,2004,4(1):10-12. Sun Jianjun,Wei Long. Testing technology of frictional torque for mechanical seals[J].Journal of Wuxi Institute of Commerce, 2004,4(1):10-12.(in Chinese) |
|
|
|