Investigation on performance of a centrifugal pump with multi-malfunction
Investigation on performance of a centrifugal pump with multi-malfunction
复制标题
多故障离心泵性能研究
DOI：
10.1177/1461348420942349
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发表时间：
2020-07
影响因子：
2.3
通讯作者：
Tian Xiao
中科院分区：
文献类型：
--
作者：
Tan Minggao;Lu Youdong;Wu Xianfang;Liu Houlin;Tian Xiao
本文通过试验和数值模拟，确定了单级单吸多故障（叶片破损、密封环磨损）离心泵的性能和内部流动特性。对离心泵的振动、内部流量、压力和径向力进行了详细分析。与普通泵相比，在设计流量下，多故障泵的扬程和效率分别下降了10.56%和10.09%。泵底部的总体振动水平最显着增加。各测点的轴向通过频率均有不同程度的增加，在5、2、3个轴向通过频率处出现了新的特征频率。仿真结果表明，在多功能泵中，破碎叶片附近的压力梯度明显减小，叶轮径向力的周期性变得更弱且更集中，从而表现出与普通泵不同的性能。舌部附近的压力脉动峰峰值增加了8.5%，而泵出口处的压力脉动峰峰值下降了6.8%。而且，入口处出现涡流，叶轮中部也出现涡流，叶轮入口附近的低压区扩展到叶轮中部。该工作结果可为水泵故障诊断提供参考。
Herein, the performance and inner flow characteristics of a single-stage single-suction centrifugal pump with multi-malfunctions (broken blade and seal ring abrasion) were determined through tests and numerical simulation. The vibration, inner flow, pressure, and radial force of the centrifugal pump were analyzed in detail. Compared with those of a normal pump, the head and efficiency of the pump with multi-malfunctions decreased by 10.56 and 10.09%, respectively, under the design flow rate. The general vibration level most significantly increased at the foot of the pump. The axial passing frequency of each measuring point increased in varying degrees, and new characteristic frequencies appeared at 5, 2, and 3 axial passing frequencies. The simulation results showed that in the pump with multi-functions, the pressure gradient near the broken blade was distinctly reduced, and the periodicity of the impeller radial force became weaker and more concentrated, thus exhibiting different performance than the normal pump. The peak-to-peak value of the pressure pulsation near the tongue increased by 8.5%, whereas that at the pump outlet decreased by 6.8%. Moreover, a vortex appeared at the inlet and another at the middle of the impeller, and the low-pressure zone near the impeller inlet expanded to the middle of the impeller. The results of this work can be used as reference for pump fault diagnosis.
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DOI：
--
发表时间：
2012
期刊：
Noise and Vibration Control
影响因子：
--
作者：
Chen Chang-sheng
通讯作者：
Chen Chang-sheng
影响因子：
5.3
作者：
He, Ji-Huan
通讯作者：
He, Ji-Huan
聚合物熔体填充过程两相流动的变分多尺度有限元法
DOI：
10.1108/hff-07-2019-0599
发表时间：
2020-01-01
影响因子：
4.2
作者：
Li, Xuejuan;He, Ji-Huan
通讯作者：
He, Ji-Huan
影响因子：
1.2
作者：
J. Mele;A. Guzzomi;J. Pan
通讯作者：
J. Mele;A. Guzzomi;J. Pan