泵全特性曲线差异对长距离浆体输送管道停泵水锤的影响

Effect of Pump Characteristic Curve Differences on Pump-off Water Hammer for Long Distance Slurry Pipelines

通过现有的泵全特性曲线资料,分别采用就近取值法和通用公式法,改造得到工程中所需泵的全特性曲线相关资料。结合实际工程,进行了长距离浆体输送管道停泵水锤的计算,得到用同类型比转速相差不大的泵全特性曲线代替使用泵的全特性曲线进行计算,偏差不大,用不同类型比转速相差很大的泵全特性曲线进行计算,结果偏差较大,将影响实际工程的水锤防护措施。

Based on available information of pump characteristics curves,both nearest value method and general formula method were adopted to get the relevant information for the engineering.Calculating pump-off water hammer for the long distance slurry pipelines shows that the calculation deviation from the pump characteristic curves with same specific speed is not obvious than that with different specific speeds,and it has effect on water hammer protection.