摘要
针对传统检测方法无法适用特定空间狭小、难以精确定位应用场景的研究现状,结合乙二醇冷却液挥发性并可被紫外灯电离的特点,研制了基于光离子化的紫外传感器,提出了阵列传感方法,通过在易泄漏部位营造密闭空间,将多阵元传感器放入密闭空间检测,搭配后端的数据处理模块与上位机模块,构建了冷却液泄漏阵列检测平台。在模拟泄漏测试环境中取得了良好的测试效果。试验结果表明,该系统突破了狭小空间冷却液渗漏实时在线监测关键技术,整个系统对微小泄漏的反应灵敏,在用0.1 mL乙二醇冷却液模拟微泄漏试验中,设置报警浓度为3 mg/L后,报警时间保持在10 s以内,反应及时,处理快速,可扩展性强,为复杂的冷却环境下及时排除冷却液故障提供实用化检测手段。
In order to solve the problem that the traditional detection methods are limited to be unable to achieve accurate positioning function in the specific situation of narrow space,combined with the characteristics of ethylene glycol coolant volatilization and ionization by ultraviolet lamps,a sensor based on photoionization is fabricated,an array sensing method is proposed,by creating a closed space in the prone part of leakage,and placing multiple array sensors in the closed space for detection,the array detection platform for coolant leakage was constructed by combining the data processing module and PC.The test results show that the system has broken through the key technology of real-time online monitoring of coolant leakage in narrow space,and the whole system is sensitive to small leakage.In the simulated micro-leakage test with 0.1 mL ethylene glycol coolant,the alarm time is kept within 10 s after the alarm concentration is set to 3 mg/L,and the response is timely and the system is strong scalability,which provides a practical detection method for timely troubleshooting coolant faults in complex cooling environment.
作者
景金荣
范正吉
洪应平
Jing Jinrong;Fan Zhengji;Hong Yingping(Key Laboratory of Instrumentation Science and Dynamic Measurement,Ministry of Education,North University of China,Taiyuan 030051,China)
出处
《电子测量技术》
北大核心
2021年第15期51-55,共5页
Electronic Measurement Technology
基金
国家自然科学基金青年科学基金(51705475)项目资助。
关键词
紫外灯
微小泄漏
液体管道泄漏
乙二醇冷却液
光离子化
阵列测量
UV lamp
tiny leakage
liquid pipeline leakage
ethylene glycol coolant
photoionization
array measurement
