通过对辅助给水汽动泵组仪控设备制造的跟踪审查,结合辅助给水系统运行的设计参数,提出辅助给水汽动泵大流量限制的测量方案,并针对福清核电站现场实际布置及系统测量需求等因素对其进行设计优化,通过样机试验及现场调试验证,证明了该测量方案的可行性,测量方案完全能够满足核电站事故工况下系统的运行要求。 Based on the follow-up examination of the instrumentation equipment of auxiliary water supply and steam pump group and the design parameters of auxiliary water supply system operation, this paper puts forward the measurement scheme of large flow restriction of auxiliary water supply and gas pump, and according to the actual arrangement and system measurement requirements of Fuqing NPP It is proved by the prototype test and the on-site commissioning verification that the measurement scheme is feasible. The measurement scheme can fully meet the operating requirements of the system under nuclear power plant accident conditions.