(1.School of Energy and Power Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China; 2.Technical and Research Center of Fluid Machinery Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China)
Abstract:Based on head concept for pumps, the formula for pumping capability of spiral groove on seal loop face was conducted by modifying the defined head formula with consideration of the face mechanical sealing characters, which shows the pumping capability is related with the static pressure distribution on the face. Numerical simulation for the inner flow of the mechanical face seal was carried out by using Fluent software, and the results proved the correctness and applicability of the modified formula. The pumping capabilities of the spiral grooves were analyzed combining the simulation results and the modified formula, and the different simulation results of spiral grooves pumping capability on different loops were compared. It shows that the pumping capability on the rotating loop is better than that on the static one, and the former condition is also better for reducing the friction between the two loops.
陈汇龙, 李亚南, 赵斌娟, 翟 晓, 黄建平, 袁寿其. 基于扬程定义的密封端面螺旋槽泵送效应分析[J]. 排灌机械工程学报, 2010, 28(1): 83-87.
Chen Huilong, Li Yanan, Zhao Binjuan, Zhai Xiao, Huang Jianping, Yuan Shouqi. Pumping effect analysis of spiral groove on seal loop face based on head definition. Journal of Drainage and Irrigation Machinery Engin, 2010, 28(1): 83-87.
[1]顾永泉.机械密封实用技术[M].北京:机械工业出版社,2001:248-251,277-281.[2]Netzel J P,Volden D.Non-contacting seals for critical service process pumps[J].Sealing Technology,1995(15):7-11.[3]何玉杰,李质情,石海峡,等.动压机械密封动力槽的优化及换热器面积的确定[J].排灌机械,2008,26 (3):30-33.He Yujie,Li Zhiqing,Shi Haixia,et al.Dynamic groove optimization of hydrodynamic mechanical seals and determination of heat exchanger area[J].Drainage and Irrigation Machinery,2008,26(3):30-33.(in Chinese)[4]Brunetiere N,Galenne E,Tournerie B,et al.Modelling of non-laminar phenomena in high reliability hydrostatic seals operating in extreme conditions[J].Tribology International,2008,41:211-220.[5]关醒凡.现代泵技术手册[M].北京:宇航出版社,1995:8-9.[6]陈汇龙,陈松,胡吉,等.低比转速径流式水轮机的流动研究及设计[J].江苏大学学报:自然科学版,2003,24(3):10-13.Chen Huilong,Chen Song,Hu Ji,et al.Study and design of fluxion for low-rate revolution radial water turbeine[J].Journal of Jiangsu University:Natural Science Edition,2003,24(3):10-13.(in Chinese)[7]冷晓静,郝木明.两种不同槽形干气密封的性能研究[J].甘肃科技,2009,25(1):49-51.Leng Xiaojing,Hao Muming.Performance research of two different grooves dry gas seals[J].Gansu Science and Technology,2009,25(1):49-51.(in Chinese)[8]Zhang Jinfeng,Yuan Shouqi.A numerical simulation of 3-D inner flow in up-stream pumping mechanical seal[J].Journal of Hydrodynamics:Ser B,2006,18(5):572-577.[9]Zhou Jianfeng,Gu Boqin,Chen Ye.An improved design of spiral groove mechanical seal[J].Chin J Chem Eng,2007,15(4):499-506.