【摘要】 反应堆的发热是靠反应堆系统一回路冷却剂循环带出堆芯之外的。一般情况下，冷却剂的流动是靠冷却剂主循环泵（主泵）来唧送的，特殊情况下，也需要靠回路中冷却剂的自然循环流动来完成。不论是哪种情况，主泵的流量特性直接影响着反应堆的安全。本文根据主泵的四象限特性图提出了一种用于计算反应堆系统稳态和瞬态工况下主泵流量特性的计算方法。该方法便于使用，其计算结果与Ｒｅｌａｐ５／ＭＯＤ２的计算结果进行了比较，二者符合很好，证明本文的模型完全可用于反应堆系统的稳态设计和瞬态事故分析。更多还原

【Abstract】 In pressurized water reactor(PWR),the heat is removed by circulation of ccolant in primarylcops. The ccolant flow is attributed to the head of main circulation pump generally,and thenatural circulation head of ccolant specially. Under these conditions,the pump characteristics areimportant to reactor safety. In this paper, a calculation method of pump flow characteristics understeady and transient conditions for a PWR is presented according to four-quadrant pumpcharacteristic. This method is convenient for practical calculation with results in good agreementwith those of Relap5/MOD2 code.更多还原