基于分布式光纤拉曼测温系统的核电一回路泄漏点监测技术
|
摘要
为了能对核能发电站内反应堆冷却系统管道的泄漏情况进行实时监测及高精度定位,利用拉曼散射效应和光时域反射技术构建了分布式光纤测温系统,结合特定规则的传感光纤布设方式,实现管道外壁温度场的全覆盖式实时在线监测.通过实验验证,当泄露发生导致二维平面内某区域的温度异常达到预先设置的阈值时,监测系统会依据布线规则对该点进行位置解码并标记,从而实现二维平面的精确定位.实验得到的定位精度为0.5m,并显著降低了误报可能性,可极大的提高管道外表面温度异常点的定位精度.
In order to monitor and accurately locate the leakage of the reactor cooling system in the nuclear power station,the distributed temperature sensor is constructed by using Raman scattering effect and optical time domain reflection technology.Combined with the specific rules of the sensing fiber layout,to achieve full coverage online monitoring of the temperature field outside the pipeline in real-time.It is verified by experiments that when the leakage causes the temperature anomaly in a certain area of the two-dimensional plane to reach a preset threshold,the monitoring system will position and mark the point according to the wiring rules,thereby achieving accurate positioning of the two-dimensional plane.The positional accuracy obtained by the experiment is 0.5 meters,and the probability of false alarms is significantly reduced,which can greatly improve the positioning accuracy of the abnormal point of the temperature on the outer surface of the pipeline.
In order to monitor and accurately locate the leakage of the reactor cooling system in the nuclear power station,the distributed temperature sensor is constructed by using Raman scattering effect and optical time domain reflection technology.Combined with the specific rules of the sensing fiber layout,to achieve full coverage online monitoring of the temperature field outside the pipeline in real-time.It is verified by experiments that when the leakage causes the temperature anomaly in a certain area of the two-dimensional plane to reach a preset threshold,the monitoring system will position and mark the point according to the wiring rules,thereby achieving accurate positioning of the two-dimensional plane.The positional accuracy obtained by the experiment is 0.5 meters,and the probability of false alarms is significantly reduced,which can greatly improve the positioning accuracy of the abnormal point of the temperature on the outer surface of the pipeline.
引文
[1] ZHANG Yu-min,ZHU Chun-lai.Development of nuclear power plant and brief analysis of radiation leaks from fukushima dai-ichi nuclear power plant[J].Chemical Defence on Ships,2011,(4):1-7.张玉敏,朱春来.核电发展与日本福岛核电站核泄漏简析[J].舰船防化,2011,(4):1-7.
[2] CHE Ji-yao,CAO Xue-wu.Study on severe core damage progression induced by anticipated transients without scram and its mitigation in Qinshan NPP unit1[J].Nuclear Power Engineering,2005,26(3):209-213.车济尧,曹学武.秦山一期核电站未能紧急停堆的预期瞬变导致堆芯熔化的进程及事故缓解措施研究[J].核动力工程,2005,26(3):209-213.
[3] FANG Jin-tu,WU Mei-jing.Performance analysis of containmeut air radiation monitoring system for Qinshan nuclear power plant[J].Nuclear Power Engineering and Technology,1998,11(1):29-39.方金土,吴美景.秦山核电厂安全壳空气辐射监测系统性能分析[J].核电工程与技术,1998,11(1):29-39.
[4] GUO Lan-ying,ZHAO Xiu-liang,ZHAO Li-hong,et al.The 13 N monitoring system for measuring the leakage of water in the primary coolant circuit of a PWR nuclear power station[J].Nuclear Electronics&Detection Technology,1998,18(4):282-284.郭兰英,赵修良,赵立宏,等.测量压水堆核电站一回路水泄漏的13N监测系统[J].核电子学与探测技术,1998,18(4):282-284.
[5] YANG Guang-li,LIU Zheng-xin,GONG De-yin.A new method for continuously monitoring the leakage of the primary coolant into the second circuit in the reactor[J].China Nuclear Science&Technology Report,1988,(S2):880123.杨广利,刘正心,龚德荫.连续监测反应堆一回路冷却剂向二回路泄漏的一种新方法[J].中国核科技报告,1988,(S2):880123.
[6] CAO Sheng-quan,YANG Ji-cai,LI Jian-jun,et al.Research on leakage detection of nuclear power station primary loop[J].Atomic Energy Science and Technology,1993,27(4):336-339.曹绳全,杨继材,李建军,等.核电站一回路泄漏检测技术研究[J].原子能科学技术,1993,27(4):336-339.
[7] SHEN Gang,YING Hong.Leak detection technology of boric acid corrosion for nuclear power plant[J].Total Corrosion Control,2016,30(1):16-19.申罡,应红.核电站硼酸腐蚀泄露监检测技术[J].全面腐蚀控制,2016,30(1):16-19.
[8] ZHOU Zheng-ping.Design and verification of acoustic leak monitoring system for nuclear power plants[J].Nuclear Power Engineering,2018,39(3):110-113.周正平.核电厂声学泄漏监测系统的设计和验证[J].核动力工程,2018,39(3):110-113.
[9] XU Sheng-ming,YANG Shuang,GAO Gang,et al.Research on oil pipeline safety monitoring system based on FBG vibration sensing[J].Optics&Optoelectronic Technology,2017,15(4):21-25.徐胜明,杨爽,高岗,等.基于光纤光栅振动传感的石油管道安全监测系统研究[J].光学与光电技术,2017,15(4):21-25.
[10] LIU Yan,ZOU Jian,HUANG Shang-lian.The theoretical analysis of raman scattering in distributing optic fiber temperature sensing[J].Opto-Electronic Engineering,1993,20(6):22-26.刘?,邹健,黄尚廉.分布式光纤温度传感的拉曼散射理论分析[J].光电工程,1993,20(6):22-26.
[11] ZOU Jian,ZHOU Sheng-jun.Study on signal processing of optical fiber temperature sensor[J].Piezoelectrics&Acoustoopics,1994,16(6):12-15.邹建,周胜军.分布式光纤温度传感器信号处理系统的研究[J].压电与声光,1994,16(6):12-15.
[12] WU Ling-chuan,ZHOU Sheng-jun,ZOU Jian,et al.Theoretical study on Raman scattering in distributed fiber temperature sensing[J].Piezoelectrics&Acoustoopics,1998,20(1):14-17.伍陵川,周胜军,邹建,等.分布式光纤温度传感中拉曼散射的理论研究[J].压电与声光,1998,20(1):14-17.
[13] ZOU Jian.Research on key technologies of distributed optical fiber temperature measurement system[D].Chongqing:Chongqing University,2005.邹建.分布式光纤温度测量系统关键技术研究[D].重庆:重庆大学,2005.
[14] SHUI Ai-she,CHEN Wei-min,SHUI Yong-hong.Improved flexible sensing cable system for leak detection and localization[J].IEEE Sensors Journal,2013,13(11):4287-4295.
[2] CHE Ji-yao,CAO Xue-wu.Study on severe core damage progression induced by anticipated transients without scram and its mitigation in Qinshan NPP unit1[J].Nuclear Power Engineering,2005,26(3):209-213.车济尧,曹学武.秦山一期核电站未能紧急停堆的预期瞬变导致堆芯熔化的进程及事故缓解措施研究[J].核动力工程,2005,26(3):209-213.
[3] FANG Jin-tu,WU Mei-jing.Performance analysis of containmeut air radiation monitoring system for Qinshan nuclear power plant[J].Nuclear Power Engineering and Technology,1998,11(1):29-39.方金土,吴美景.秦山核电厂安全壳空气辐射监测系统性能分析[J].核电工程与技术,1998,11(1):29-39.
[4] GUO Lan-ying,ZHAO Xiu-liang,ZHAO Li-hong,et al.The 13 N monitoring system for measuring the leakage of water in the primary coolant circuit of a PWR nuclear power station[J].Nuclear Electronics&Detection Technology,1998,18(4):282-284.郭兰英,赵修良,赵立宏,等.测量压水堆核电站一回路水泄漏的13N监测系统[J].核电子学与探测技术,1998,18(4):282-284.
[5] YANG Guang-li,LIU Zheng-xin,GONG De-yin.A new method for continuously monitoring the leakage of the primary coolant into the second circuit in the reactor[J].China Nuclear Science&Technology Report,1988,(S2):880123.杨广利,刘正心,龚德荫.连续监测反应堆一回路冷却剂向二回路泄漏的一种新方法[J].中国核科技报告,1988,(S2):880123.
[6] CAO Sheng-quan,YANG Ji-cai,LI Jian-jun,et al.Research on leakage detection of nuclear power station primary loop[J].Atomic Energy Science and Technology,1993,27(4):336-339.曹绳全,杨继材,李建军,等.核电站一回路泄漏检测技术研究[J].原子能科学技术,1993,27(4):336-339.
[7] SHEN Gang,YING Hong.Leak detection technology of boric acid corrosion for nuclear power plant[J].Total Corrosion Control,2016,30(1):16-19.申罡,应红.核电站硼酸腐蚀泄露监检测技术[J].全面腐蚀控制,2016,30(1):16-19.
[8] ZHOU Zheng-ping.Design and verification of acoustic leak monitoring system for nuclear power plants[J].Nuclear Power Engineering,2018,39(3):110-113.周正平.核电厂声学泄漏监测系统的设计和验证[J].核动力工程,2018,39(3):110-113.
[9] XU Sheng-ming,YANG Shuang,GAO Gang,et al.Research on oil pipeline safety monitoring system based on FBG vibration sensing[J].Optics&Optoelectronic Technology,2017,15(4):21-25.徐胜明,杨爽,高岗,等.基于光纤光栅振动传感的石油管道安全监测系统研究[J].光学与光电技术,2017,15(4):21-25.
[10] LIU Yan,ZOU Jian,HUANG Shang-lian.The theoretical analysis of raman scattering in distributing optic fiber temperature sensing[J].Opto-Electronic Engineering,1993,20(6):22-26.刘?,邹健,黄尚廉.分布式光纤温度传感的拉曼散射理论分析[J].光电工程,1993,20(6):22-26.
[11] ZOU Jian,ZHOU Sheng-jun.Study on signal processing of optical fiber temperature sensor[J].Piezoelectrics&Acoustoopics,1994,16(6):12-15.邹建,周胜军.分布式光纤温度传感器信号处理系统的研究[J].压电与声光,1994,16(6):12-15.
[12] WU Ling-chuan,ZHOU Sheng-jun,ZOU Jian,et al.Theoretical study on Raman scattering in distributed fiber temperature sensing[J].Piezoelectrics&Acoustoopics,1998,20(1):14-17.伍陵川,周胜军,邹建,等.分布式光纤温度传感中拉曼散射的理论研究[J].压电与声光,1998,20(1):14-17.
[13] ZOU Jian.Research on key technologies of distributed optical fiber temperature measurement system[D].Chongqing:Chongqing University,2005.邹建.分布式光纤温度测量系统关键技术研究[D].重庆:重庆大学,2005.
[14] SHUI Ai-she,CHEN Wei-min,SHUI Yong-hong.Improved flexible sensing cable system for leak detection and localization[J].IEEE Sensors Journal,2013,13(11):4287-4295.