Abstract：The flow passages and rotor system of a coal mine submersible centrifugal pump were built by the 3D software Pro/E, and an unstructured mesh was generated in the passages with the software ICEM. The characteristics of such a multistage pump were estimated through the code CFX at different operating conditions based on the Reynolds timeaveraged Navier-Stokes (RANS) equations combined with the standard k-ε turbulence models and SIMPLEC scheme， and compared with experimental data, their reliability was confirmed. The simulated fluid flow results were input into Ansys Workbench to calculate the modes of the rotor system with two pivots by using fluidstructure interaction method, it was found that the first order critical speed of the rotor system was lower than the pump rotational speed. According to the deformation patterns of the rotor system the rotor system was redesigned with three pivots， the calculated critical speed of the new rotor system met the design requirement. Obviously, the life span of bearings will be extended. The results show that the quick damage of bearings 7217AC/DB and serve erosion of wearrings are mainly due to the too low critical speed of the original rotor system. The critical speed of the threepivot rotor system is higher than the pump rotational speed and it will greatly improve the reliability of both bearings and sealingrings.
曹卫东, 高一, 王秀兰, 许荣军. 基于Ansys的矿用潜水电泵转子系统的优化设计[J]. 排灌机械工程学报, 2012, 30(2): 157-161.
CAO Wei-Dong, GAO Yi, WANG Xiu-Lan, XU Rong-Jun. Optimization design of submersible pump rotor system for coal mine based on Ansys. Journal of Drainage and Irrigation Machinery Engin, 2012, 30(2): 157-161.
参考文献(References)［1］曹卫东,李跃,孙新庆. 内装式矿用隔爆多级潜水泵设计［J］.排灌机械,2009,27(3):145-149.Cao Weidong, Li Yue,Sun Xinqing. Design of multistage flameproof submersible pumps with inner motor for coal mine［J］. Drainage and Irrigation Machinery,2009,27(3):145-149.(in Chinese)［2］田辉,孙秀玲,郭涛,等. 基于遗传算法的离心泵叶片水利性能优化［J］. 农业机械学报,2010,41(5):64-67.Tian Hui,Sun Xiuling,Guo Tao, et al. Optimization for the hydraulic performance of centrifugal blade based on the genetic algorithm［J］. Transactions of the Chinese Society for Agricultural Machinery, 2010,41(5): 64-67. (in Chinese)［3］Westra R W, Broersma L, Andel Van K, et al. PIV measurements and CFD computations of secondary flow in a centrifugal pump impeller［J］. Journal of Fluids Engineering, 2010,132(6):061104.［4］谢蓉,单玉姣,王晓放.混流泵叶轮流动性能数值模拟和叶型优化设计［J］. 排灌机械工程学报,2010,28(4):295-299.Xie Rong,Shan Yujiao,Wang Xiaofang. Numerical simulation on performance and blade profile optimal design of mixedflow pump impeller［J］. Journal of Drainage and Irrigation Machinery Engineering, 2010,28(4):295-299. (in Chinese)［5］Duccio Bonaiuti, Mehrdad Zangeneh, Goto A, et al. Parametric design of a water jet pump by means of inverse design, CFD calculations and experimental analyses［J］. Journal of Fluids Engineering, 2010,132(3): 031104.［6］Lucius A, Brenner G. Unsteady CFD simulations of a pump in part load conditions using scaleadaptive simulation［J］. International Journal of Heat and Fluid Flow, 2010,31(6):1113-1118.［7］Schmucker H, Flemming F, Coulson S. Twoway coupled fluid structure interaction simulation of a propeller turbine［C］／／Proceedings of the 25th IAHR on Hydraulic Machinery and systems, 2010.［8］Yang Huidong, Walter Zulehner. Numerical simulation of fluidstructure interaction problems on hybrid meshes with algebraic multigrid methods［J］. Journal of Computational and Applied Mathematics, 2011,235(18):5367-5379.［9］李红,王艳艳,夏长高,等.纸浆泵泵轴强度有限元分析［J］. 中华纸业,2006,27(7):66-68.Li Hong, Wang Yanyan,Xia Changgao,et al. Pulp pump shaft strength finite element analysis［J］. China Pulp ＆ Paper Industry, 2006, 27(7):66-68. (in Chinese)［10］于保敏, 黄站立. 离心泵转子的有限元模态分析［J］. 机械工程师,2005(6):108-109.Yu Baomin,Huang Zhanli. Finite element modality analysis of rotor in centrifugal pump［J］. Mechanical Engineer, 2005(6):108-109.(in Chinese)
