非设计工况下具有高流体动力稳定性的高速离心氢泵的设计探讨

A Study on Designing High Speed Centrifugal Hydrogen Pumps with High Hydrodynamic Stability at Off design Regime

论述了高速离心泵特别是高速氢泵流体动力稳定性的基本原理；提供具有较宽流量调节范围的高速离心泵几何参数选择方法，特别阐明了离心轮综合设计流量参数ｑｐ对泵压头－流量特性线形状的影响；介绍了高速离心泵压头－流量特性线的估算方法，并与我国氢泵试验结果进行了对比。还讨论了流体动力数值计算（ＣＦＤ）与氢泵空气模拟试验的问题，可以说ＣＦＤ和空气模拟试验是氢泵设计过程验证的可行方法。

In the present paper the working princlple of high speed centrifugal pumps, especially the hydrodynamic stability, is discussed. The method of choosing geometry parameters of high speed centrifugal pumps working with wide flowrate range is given, and the influence of the compound flowrate parameter(q P) at the design regime on the pump characteristics(head flowrate) is especially clarified. The method for estimating the characteristics of high speed centrifugal pump is presented. Some calculation results are compared with the experimental data obtained in our country. In this paper the computational fluid dynamics(CFD) and air test are also discussed. It can be said that in nowadays CFD and air test are the applicable ways for verifying the design quality.