水介质下的温度计响应时间仿真与试验研究  

Simulation and Experimental Researchof Thermometer Response Time in Aqueous Media

作　　者：王源 郭伟 熊国华 郭承旺 WANG Yuan;GUO Wei;XIONG Guohua;GUO Chengwang(China Nuclear Power Research Institute Co.,Ltd.,Shenzhen 518124,China)

机构地区：[1]中广核研究院有限公司,广东深圳518124

出　　处：《自动化仪表》2023年第9期27-31,共5页Process Automation Instrumentation

摘　　要：反应堆一回路冷却剂温度是核电站的重要监测参数,通常采用热电阻温度计进行测量。响应时间是热电阻温度计的关键技术指标。为获取准确的响应时间数值,对热电阻温度计水介质下响应时间仿真与试验进行了研究。基于反应堆一回路冷却剂的温度变化场景,通过控制变量方法对典型不同测量工况(温度、流速、压力)条件下的热电阻温度计响应时间开展仿真分析。通过仿真分析,研究了不同测量工况对传感器响应时间的影响和变化规律。采用实验室方法验证了热电阻温度计动态响应仿真计算结果的可靠性。该研究可以确保反应堆在发生较大温度瞬态变化时,热电阻温度计能快速、有效响应并及时实现停堆。Reactor primary circuit coolant temperature is an important monitoring parameter in nuclear power plants,which is usually measured bytermal resistance thermometers.Response time is the key technical index of termal resistance thermometers.To obtain accurate response time,the simulation and test of the response time of termal resistance thermometers under aqueous medium have been investigated.Based on the temperature change scenario of the coolant in the primary circuit of the reactor,the response time of the termal resistance thermometer under typical different measurement conditions (temperatures,flow rates and pressures) is simulated and analyzed by the method of control variables.Through the simulation analysis,the influence and change rule of the sensor response time under different measurement conditions are studied.Laboratory methods are used to verify the reliability of the dynamic response simulation calculation results of the termal resistance thermometer.The study can ensure that the reactor in the occurrence of large temperature transient changes,termal resistance thermometer can be fast,effective response and timely realization of the reactor shutdown.

关 键 词：反应堆 热电阻温度计 响应时间 不同测量工况 仿真试验 

分 类 号：TH-81[机械工程]