CPR1000机组低压安注泵流量校核试验不满足准则时的分析

中国改进型三环路压水堆（CPR1000）低压安注系统（LHSI）泵流量校核试验不满足验收准则时，需要对管路系统中的限流孔板进行调整。通过工程流体力学计算分析，可以得到各种条件下限流孔板的调整方法。应用该分析方法，可以准确地得到满足LHSI运行要求的限流孔板尺寸。该分析方法有效地解决了在低压安注泵流量校核试验不满足准则要求时，如何对管路系统中限流孔板进行更换的问题。 

Analysis of Failing to Meet LHSI Pump Flow Test Criteria?in CPR1000 Unit

When the results of the pump flow test of the low head safety injection system (LHSI) of CPR1000 do?not satisfy?the acceptance?criteria,?the throttle elements in the pipeline system need to be adjusted.?The adjustment method of the lower limit flow orifice plate can be obtained through the calculation and analysis of the engineering fluid mechanics.?By using this method, the size of the restricted throttle elements can be obtained accurately. The analysis method effectively solves the problem of how to change the throttle elements in the pipeline system when the low head safety injection pump flow test do?satisfy?the requirement of the criterion.?