流体机械

2014, v.42;No.503(05) 43-46

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低比转速化工离心泵的可靠性预测
Prediction on the Reliability of A Low Specific Centrifugal Pump

夏雨鑫;
XIA Yu-xin;Sinopec Zhenhai Refining & Chemical Company;

摘要(Abstract):

在化工离心泵设计过程中对泵的性能和可靠度进行预测有利于保证泵在运行过程中的可靠性。为给离心泵的可靠性设计提供一种分析手段,以一台低比转速离心泵为对象,给出该泵的设计参数和结构、对水力性能进行数值预测和性能测试。将离心泵看作一个由各部件组成的串联系统,在相关经验或试验数据基础上结合模型泵的特点,分析单元可靠度进而得到零件的失效率,最终通过系统的可靠度计算得出离心泵的可靠度。该设计和分析方法相对于传统的机械设计方法更有利与提高泵的可靠性。
The performance and reliability prediction in the design of the pump are helpful to ensure the reliability of the chemical process pump during operation. to provide an analysis method for the reliability design for centrifugal pump,with a specific speed centrifugal pump as the research object,the design parameters and structure were given,the numerical and experimental results of the pump performance were presented. The centrifugal pump was modeled as a series system with various components.On the basis of the relevant experience,experimental data and the characteristic model of the centrifugal pump,the reliability and failure rate of the components was obtained,then the reliability of centrifugal pump was calculated through the calculation of reliability of system. The design and analysis method compared with the traditional mechanical design method has more advantageous and improves the reliability of the chemical process pump.

关键词(KeyWords): 离心泵;低比转速;水力性能;可靠度预测
centrifugal pump;low specific;hydraulic performance;reliability prediction

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作者(Author): 夏雨鑫;
XIA Yu-xin;Sinopec Zhenhai Refining & Chemical Company;

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