排灌机械工程学报
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排灌机械工程学报  2012, Vol. 30 Issue (2): 157-161    DOI: 10.3969/j.issn.1674-8530.2012.02.007
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基于Ansys的矿用潜水电泵转子系统的优化设计
 曹卫东1, 高一1, 王秀兰1, 许荣军2
(1.江苏大学流体机械工程技术研究中心, 江苏 镇江 212013; 2.南京蓝深制泵集团股份有限公司, 江苏 南京 211500)
Optimization design of submersible pump rotor system for coal mine based on Ansys
 CAO  Wei-Dong-1, GAO  Yi-1, WANG  Xiu-Lan-1, XU  Rong-Jun-2
(1.Research Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang, Jiangsu 212013,China; 2.Nanjing Lanshen Pump Corp. (Group) Ltd., Nanjing, Jiangsu 211500, China)
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摘要 应用三维造型软件Pro/E对矿用潜水电泵过流部件内部水体和部件进行实体造型,导入ICEM软件对水体部分进行非结构化网格划分.基于雷诺时均Navier-Stokes方程、标准k-ε湍流模型和SIMPLEC算法,采用计算流体动力学软件CFX对矿用多级潜水泵不同工况下的外特性进行数值模拟,并将模拟结果与试验结果进行对比,验证模拟结果的可靠性.将流场模拟结果导入Ansys Workbench,对两支点支撑方式的转子系统进行基于流固耦合的模态分析,计算得到了原有转子系统的一阶临界转速低于运行转速.根据对转子振型特点的分析,对转子系统进行三支点优化设计,并再次进行模拟计算.结果表明:原有两轴承支撑转子系统临界转速过低,是轴承7217AC/DB提前损坏、密封环磨损严重的主要原因;三支点转子临界转速远大于泵的实际运行转速,可大幅度提高轴承可靠性,减缓密封环的磨损.
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曹卫东
高一
王秀兰
许荣军
关键词矿用潜水电泵   转子系统   流固耦合   模态分析   临界转速     
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 timeaveraged 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 fluidstructure 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 wearrings are mainly due to the too low critical speed of the original rotor system. The critical speed of the threepivot rotor system is higher than the pump rotational speed and it will greatly improve the reliability of both bearings and sealingrings.
Key wordssubmersible pump for coal mine   rotor system   fluid structure interaction   model analysis   critical speed   
收稿日期: 2011-11-12; 出版日期: 2012-03-30
基金资助:

江苏高校优势学科建设工程项目; 江苏省企业博士集聚计划项目(2010001)

通讯作者: 曹卫东(1972—),男,江苏南通人,副研究员(cwd@ujs.edu.cn),主要从事流体机械水动力学研究.   
作者简介: 高一(1986—),男,辽宁葫芦岛人,硕士研究生(gaoyi2011win@163.com),主要从事矿用潜水泵可靠性研究.
引用本文:   
曹卫东,高一,王秀兰等. 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 et al. Optimization design of submersible pump rotor system for coal mine based on Ansys[J]. Journal of Drainage and Irrigation Machinery Engin, 2012, 30(2): 157-161.
 
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