核电厂放射性废液防堵塞液位检测系统研究  

Research on Anti-Clogging Liquid Level Detection System for Radioactive Waste Liquid in Nuclear Power Plants

作　　者：符江 刘胜智 李苏 马嘎 Fu Jiang;Liu Shengzhi;Li Su;Ma Ga(Suzhou Nuclear Power Research Institute,Shenzhen,Guangdong,518003,China;AtomHorizon Electric(Jinan)Corp.Ltd.,Jinan,250101,China)

机构地区：[1]苏州热工研究院有限公司,广东深圳518003 [2]美核电气(济南)股份有限公司,济南250101

出　　处：《核动力工程》2020年第1期117-121,共5页Nuclear Power Engineering

摘　　要：核电厂内放射性废液处理系统的吹气式液位测量仪表频繁堵塞,导致放射性废液液位失去监测,影响放射性废液处理效率。针对该问题,新增自动吹扫装置用于吹气式液位测量仪表引压管的预防性吹扫。依据吹气式液位仪表测量气路组成和堵塞周期,将自动吹扫装置的吹扫气路与测量气路重新组合,吹扫逻辑通过设置吹扫工作启动和停止的先后顺序和时间间隔,每次只吹扫一路测量气路,保证了吹扫工作中仪表的测量功能不受影响。模拟测试结果表明,自动吹扫装置解决了吹气式液位测量仪表管路频繁堵塞的问题,最终保证放射性废液液位监测功能连续可用。The blow-type liquid level measuring instrument for the radioactive waste liquid treatment system in the nuclear power plant is frequently blocked, resulting in the loss of monitoring of the radioactive waste liquid level, thus affecting the efficiency of the radioactive waste liquid treatment. A new automatic purging device for preventive purging of the blown liquid level measuring instrument is added. According to the blown liquid level measuring instrument of measurement of gas path composition and clogging cycle, the purging gas path of the automatic purging device is recombined with the measuring gas path, and the purging logic ensures the purging work by setting the sequence and time interval of starting and stopping the purging work. Only one measuring gas path is purged at a time, and the measuring function of the meter is not affected. The automatic purging device solves the problem of frequent blockage of the measuring pipeline of the blow-type liquid level meter, and finally ensures that the liquid level monitoring function of the radioactive waste liquid is available. The results show that the application of the automatic purging device is conducive to the continuous monitoring of the liquid level monitoring function of the blowing liquid level measuring instrument, without interference with the radioactive waste treatment.

关 键 词：核电厂 吹气式液位仪表 自动吹扫装置 防堵塞 吹扫算法 放射性废液 

分 类 号：TL941[核科学技术—辐射防护及环境保护] TM623[电气工程—电力系统及自动化]