核电厂事故温度环境对压力变送器的影响分析-南华大学学报.PDF

第28卷第1期 南华大学学报(自然科学版) Vol郾28 No郾1 2014年3月 Journal of University of South China(Science and Technology) Mar郾2014 文章编号:1673-0062(2014)01-0001-05 核电厂事故温度环境对压力变送器的影响分析 1 1,2 邹树梁 ,黄有骏 (1.核设施应急安全作业技术与装备湖南省重点实验室,湖南 衡阳421001; 2.南华大学 核科学技术学院,湖南 衡阳421001) 摘摇 要:压力变送器广泛应用于核电厂压力、液位、流速等工艺参数的测量.大部分安 装在安全壳内的压力变送器均经过了设计基准事故的鉴定,但超设计基准事故高温 环境对其的影响仍未知.本文采用鉴定曲线包络法及仿真技术对其在设计基准事故 和超设计基准事故下的工作情况进行了分析,给出了上述工况高温环境对其的影响, 并通过分析结论,对该仪表耐高温性能的改进方向提出了建议. 关键词:核电厂;事故;温度环境;压力变送器 中图分类号:TL361摇 摇 摇 文献标识码:B Analysis of the Impact of Accident Temperature Environment on Pressure Transmitter in Nuclear Power Plant 1 1,2 ZOU Shu鄄liang ,HUANG You鄄jun (1.Hunan Provincial Key Laboratory of Emergency Safety Technology and Equipment for Nuclear Facilities,Hengyang,Hunan421001,China; 2.School of Nuclear Science and Technology,University of South China, Hengyang,Hunan421001,China) Abstract:Pressure transmitters are widely used in measuring of process parameters in nu鄄 clearpowerplant.Most of thepressuretransmitterslocatedin containmentvesselhavepas鄄 sed the DBA qualification,butwhetherthey could surviveinhigh鄄temperatureenvironment in DBDA isunknown.Inthisarticle,wemadeanalysisaboutthecharacteristicsof pressure transmitter,and used both envelope and simulation methods to study how temperature af鄄 fectsthetransmitterinDBAandBDBAcondition.Atlast,wegavesomesuggestionsonway of improving the resistance to elevated temperature of transmitter according to the st