核供热堆堆芯冷却剂出口温度的软测量方法  

A soft-measuring method to measure the core coolant temperature at the outlet of a nuclear heating reactor

作　　者：查美生[1] 陈实[1] 马昌文[1] 沈健[1] 

机构地区：[1]清华大学核能技术设计研究院,北京100084

出　　处：《工业仪表与自动化装置》2003年第1期30-33,共4页Industrial Instrumentation & Automation

摘　　要：　该文阐述了一种用于200MW核供热堆(NHR 200)堆芯冷却剂出口温度的软测量方法。两支铠装热电偶被置于燃料元件盒支承格子板侧面的空间正交沟槽中,用这两支热电偶所测得的温度计算堆芯燃料元件盒冷却剂的出口温度。此测量方法已通过实验验证,并得到了用于计算堆芯冷却剂出口温度的经验公式。对于NHR 200,堆芯燃料元件盒冷却剂出口温度的最大测量误差为1 7℃。This paper presents a softmeasuring method to measure the core coolant temperature at the outlet of the 200 MW nuclear heating reactor.Two sheath thermcouples are immersed in a space or thogonal slot located at one side of a supporting grid plate for fuel assemblies.The core coolant temperature at the outlet is evaluated according to the temperature measured by the two thermocouples.This measuring method has been tested by experiments,an empirical formula is for evaluating the core coolant temperature has been obtained.Its maximal measurement error for the NHR200 is 1.7℃.

关 键 词：核供热堆 软测量 热电偶 误差分析 堆芯冷却剂出口温度 

分 类 号：TL413.2[核科学技术—核技术及应用] TP274[自动化与计算机技术—检测技术与自动化装置]