| 离心泵非定常流场计算和影响使用寿命的因素分析 |
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| 引用本文： | 白庭河,贾国静,杨晓霖,伍茂林.离心泵非定常流场计算和影响使用寿命的因素分析[J].甘肃科学学报,2011,23(1):114-117. |
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| 作者姓名： | 白庭河 贾国静 杨晓霖 伍茂林 |
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| 作者单位： | 1. 兰州理工大学石油化工学院,甘肃,兰州,730050;兰州石化公司,甘肃,兰州,730060
2. 兰州石化公司,甘肃,兰州,730060 |
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| 摘 要： | 采用伯努利方程数值计算、流体动力学(CFD)、FLUENT数值计算模拟叶轮非定常流场的变化规律,定量分析影响指定大型离心泵使用寿命的关键性技术指标,结果表明:此型号大型离心泵实际工作流量大于设计流量(Q≥4 438.77 m3/h)时,叶轮入口就会形成△β≤-5.14°的负冲角,离心泵扬程H≤58 m,发生汽蚀现象.
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| 关 键 词： | 离心泵 非定常流场 数值模拟 |
Calculation on Unsteady Flow and Life Analysis of Centrifugal Pump |
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| BAI Ting-he,JIA Guo-jing,YANG Xiao-lin,WU Mao-lin.Calculation on Unsteady Flow and Life Analysis of Centrifugal Pump[J].Journal of Gansu Sciences,2011,23(1):114-117. |
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| Authors: | BAI Ting-he JIA Guo-jing YANG Xiao-lin WU Mao-lin |
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| Institution: | 1.College of Petrochemical Technology,Lanzhou University of Science and Technology,Lanzhou 730050,China; 2.Lanzhou Petrochemical Company,Lanzhou 730060,China) |
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| Abstract: | Based on the numerical calculation of Bernoulli’s equation,fluid dynamics(CFD) and FLUENT numerical simulation of unsteady impeller variation,the key technical indicators of service life of large centrifugal pumps are analyzed in a quantitative way.The result shows that when the actual work flow of this large centrifugal pump is larger than the designed flow(Q≥4 438.77 m3/h),will form at the impeller entrance and a phenomenon of cavitation will take place at the pump head H≤58 m,a negative angle of attack Δβ≤-5.14°. |
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| Keywords: | centrifugal pump unsteady flow numerical simulation |
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