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基于泵阀联合调节的并联离心泵组高可靠性优化 被引量:14
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作者 赖周年 杨帅 +1 位作者 武鹏 吴大转 《排灌机械工程学报》 EI CSCD 北大核心 2018年第12期1205-1210,1221,共7页
针对离心泵常见的"大泵小用"问题,在常规多泵PID变频供水系统的基础上,通过优化投入运行的离心泵的数量和适当关小控制阀的方法提出了1种可以在一定程度上改善离心泵偏工况问题的方法.搭建了1套3台离心泵并联泵组试验台,并进... 针对离心泵常见的"大泵小用"问题,在常规多泵PID变频供水系统的基础上,通过优化投入运行的离心泵的数量和适当关小控制阀的方法提出了1种可以在一定程度上改善离心泵偏工况问题的方法.搭建了1套3台离心泵并联泵组试验台,并进行了测试.试验结果表明,文中提出的方法能够以增加一定的能耗为代价,在一定程度上改善离心泵的偏工况运行情况,提高离心泵的可靠性.当偏工况情况过于严重时,采用控制阀调节工况点的方法将会大大增加管路阻力,牺牲大量的能源,使得此方法欠缺经济性.当取消控制阀的作用仅保留泵数优化时,文中方法能够同时实现节能和一定程度上改善偏工况程度,但整体偏工况程度依然较严重.实际工程中可结合具体应用中对能耗与可靠性的权重倾向进行合理选择. 展开更多
关键词 离心 泵可靠性 数优化 变频控制 阀联合调节
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Reliability Improvements to Centrifugal Pump Performance in Conjunction with Inducers, CFD Comparative Study 被引量:1
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作者 Said A. F. Hawash Dalia M. S. EI Gazzar Mohamed A. EI Samanoudy 《Journal of Earth Science and Engineering》 2015年第5期296-305,共10页
In this research, centrifugal pump unit was analysed to study the effects of using inducers on its performance. Hydraulic tests were done to obtain the optimum hydraulic performance before and after using inducer. Two... In this research, centrifugal pump unit was analysed to study the effects of using inducers on its performance. Hydraulic tests were done to obtain the optimum hydraulic performance before and after using inducer. Two types of inducers were used in this work (axial, helical). For this purpose, a test rig was specially designed with a pump system to investigate the parameters under consideration. Plots (H-Q) curves, (B.P.-Q) curves and (q-Q) curves were used to show the effect of pump performance with and without inducers. The present study introduces a simulation of centrifugal pump performance in conjunction with inducers using CFD (Computational Fluid Dynamics), to compare it with experimentally observed values. The model investigates the impact of using inducers on the head and flow of the pump. The results of the CFD model and experimental are correlated well. Furthermore, the results help the decision makers of the pumps for future developments in pump performance assuring safe and reliable running condition of the water pumps. Also it may be used for more applications of larger head and flow pumps. 展开更多
关键词 Centrifugal pump axial helical inducers hydraulic performance CFD simulation NPSH.
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