Abstract:To achieve a more effective optimization method for upstream pumping mechanical seals, based on cavitation model, the spiral groove geometrical parameters, such as groove depth h, spiral angle α, groove diameter ratio β and groove width ratio γ are considered as the design variables and the leakage through the seal is used as the objective function. Then, 50 mechanical seals are designed by means of uniform experimental design method, and the values of objective function are calculated by CFD to establish regression models of the objective function with respect to these variables. The response surface method is used to analyze the interaction of between the design variables and their effects on the leakage by making use of the leakage contours generated in MATLAB. Consequently, the optimal ranges of the design variables are determined. The fluid dynamics in three seals with design variables in the optimal ranges is simulated to decide the optimal combination of the design variables. It is confirmed that it is feasible to use the response surface method in upstream pumping mechanical seal optimization. When the groove depth h, spiral angle α, groove diameter ratio β and groove width ratio γ are in range of 6-12 μm, 16°-20°, 0.35-0.55 and 0.45-0.6, respectively, the mechanical seal performance is even better.
陈汇龙, 刘金凤, 任坤腾, 李同, 付杰, 邹强, 殷云潇. 基于响应面法的上游泵送机械密封优化[J]. 排灌机械工程学报, 2016, 34(3): 232-237.
CHEN Huilong, LIU Jinfeng, REN Kunteng, LI Tong, FU Jie, ZOU Qiang, YIN Yunxiao. Study on optimization of upstream pumping mechanical seal based on response surface method. Journal of Drainage and Irrigation Machinery Engin, 2016, 34(3): 232-237.
[1]陶丹萍.组合螺旋型槽干气密封泄漏特型研究[D]. 南京:南京林业大学,2013.[2]陈汇龙,李雯瑜,黄建平,等. 基于正交试验法的孔槽耦合端面机械密封槽参数设计[J].润滑与密封,2012,37(3):21-24. CHEN Huilong, LI Wenyu,HUANG Jianping,et al. Parametric design of spiral groove of mechanical seal with micropore and spiral groove face based on orthogonal design[J].Lubrication engineering,2012,37(3):21-24.(in Chinese)[3]王永拖.机械密封泄漏量浅析[J].液压气动与密封,2015,35(10):40-42. WANG Yongtuo.The analysis of mechanical seal′s leakage rate[J]. Hydraulics pneumatics & seals, 2015,35(10):40-42.(in Chinese)[4]胡丹梅,郝木明,彭旭东,等.螺旋槽上游泵送机械密封端面参数结构优化[J]. 润滑与密封,2003,28(1):35-37. HU Danmei, HAO Muming, PENG Xudong,et al. Spiral groove upstream pumping mechanical seal face parameters of structural optimization [J]. Lubrication engineering, 2003,28(1):35-37.(in Chinese)[5]何为,唐斌,薛卫东.优化试验设计方法及数据分析[M].北京:化学工业出版社,2015.[6]张国秋,王文璇.均匀试验设计方法应用综述[J].数理统计与管理,2013,32(1):191-200. ZHANG Guoqiu,WANG Wenxuan. A citation review on the uniform experimental design[J].Journal of applied statistics and management,2013,32(1):191-200.(in Chinese)[7]BRUNETIÈRE N, TOURNERIE B. Numerical analysis of a surface-textured mechanical seal operating in mixed lubrication regime[J]. Tribology international, 2012, 49:80-89.[8]陈汇龙,刘志斌,刘彤,等.基于空化的机械密封槽腔耦合方式研究[J].江苏大学学报(自然科学版),2015,36(1):44-47. CHEN Huilong, LIU Zhibin,LIU Tong,et al. Research on coupling style of mechanical seal with spiral groove and micro-pores based on cavitation [J].Journal of Jiangsu University(natural science edition),2015,36(1):44-47.(in Chinese)[9]郝木明.机械密封技术及应用[M].北京:中国石化出版社,2010:76-87.[10]MILLER B A, WOODRUFF G W. Numerical formulation for the dynamic analysis of spiral-grooved gas face seals[J]. Journal of tribology, 2000, 123(2):395-403.[11]LIU T, CHEN H L, LIU Y H, et al. Study on cavitation effect of mechanical seals with laser-textured porous surface[C]//Proceedings of the IOP conference series earth and environmental science, 2012:692-697.[12]包超英,孟祥铠,李纪云,等.基于渗流原理的液体润滑机械密封的泄漏率研究[J].流体机械,2014,42(11):24-28. BAO Chaoying,MENG Xiangkai,LI Jiyun, et al. Study on leakage rate of liquid lubricate dmechanical seal based on percolation theory[J].Fluid mechinery, 2014,42(11):24-28.(in Chinese)[13]RICHARD F G. Response surface methodology, process and product optimization using design experiment[J]. Technometrics, 1996, 38(3):284-286.[14]吕辉,于德介,谢展,等.基于响应面法的汽车盘式制动器稳定性优化设计[J].机械工程学报,2013,49(9):55-60. LYU Hui,YU Dejie,XIE Zhan,et al.Optimization of vehicle disc brakes stability based on response surface method[J].Journal of mechanical engineering, 2013,49(9):55-60.(in Chinese)