| 离心式泥泵过流部件的磨损特性 |
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| 引用本文： | 彭光杰,王正伟,付硕硕.离心式泥泵过流部件的磨损特性[J].排灌机械工程学报,2015,33(12):1013-1018. |
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| 作者姓名： | 彭光杰 王正伟 付硕硕 |
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| 作者单位： | 1.江苏大学国家水泵及系统工程技术研究中心, 江苏 镇江212013; 2.清华大学水沙科学与水利水电工程国家重点实验室, 北京100084; 3.天津市峰润科技发展有限公司, 天津 300134 |
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| 摘 要： | 基于固液两相流理论,应用欧拉-拉格朗日法模拟了离心式泥泵不同流量及泥沙浓度下的定常固液两相流场,应用FINNIE预估模型进行了磨损特性计算,着重研究了泥泵叶轮、压水室表面的磨损规律.研究结果表明,随着泥沙浓度增大,泥泵的叶轮、压水室表面的磨损率相对值相应增大;压水室表面的磨损率相对值在小流量的值较高;叶轮的磨损率相对值的最大值出现在小流量区域;压水室表面的磨损率相对值比叶轮表面要高;泥泵在高效区运行,泥泵过流部件的磨损率相对值较低.
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| 关 键 词： | 离心式泥泵 固液两相流 数值模拟 磨损率 |
| 收稿时间： | 2015-07-18 |
Wear characteristics of flow parts of centrifugal dredge pump |
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| PENG Guangjie,WANG Zhengwei,FU Shuoshuo.Wear characteristics of flow parts of centrifugal dredge pump[J].Journal of Drainage and Irrigation Machinery Engineering,2015,33(12):1013-1018. |
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| Authors: | PENG Guangjie WANG Zhengwei FU Shuoshuo |
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| Institution: | 1.National Research Center of Pumps, Jiangsu University, Zhenjiang, Jiangsu 212013, China; 2.State Key Laboratory of Hydroscience and Engineering Tsinghua University, Beijing 100084, China; 3.Tianjin Fengrun Science & Technology Co., Ltd., Tianjin 300134, China |
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| Abstract: | The relationship between the wear rates on the surfaces of the impeller as well as volute and the sediment concentration was investigated using the distribution of the wear rates. An Eulerian-Lagrangian computational fluid dynamics(CFD)procedure was used to simulate steady liquid-solid two-phase flow for various pump operating conditions. The FINNIE model was used to predict the abrasion of the surface of impeller and volute. It was found that the relative value of wear rate of impeller and casing surface increased with the increase of sediment concentration; it was larger at the low flow rate of the pump, while the value was lower in the high efficiency condition of the pump. The relative value for the casing surface is larger than that for the impeller surface. The relative value for flow parts is low in the high efficiency area of the pump. |
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| Keywords: | centrifugal dredge pump solid-liquid two-phase fluids numerical simulation wear rate |
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