孔口流量计在超大流量气溶胶采样器现场校准中的应用  

Application of orifice flow meters for field calibration of ultra-high flow aerosol samplers

作　　者：肖承川 张雯 苏雯 李思梦 邱婷婷 曾令平 卿永泉 XIAO Chengchuan;ZHANG Wen;SU Wen;LI Simeng;QIU Tingting;ZENG Lingping;QING Yongquan(National Institute of Measurement and Testing Technology,Chengdu 610021,China;Chengdu Institute of Science and Technology Development Strategy,Chengdu 610041,China)

机构地区：[1]中国测试技术研究院化学研究所,四川成都610021 [2]成都市科学技术发展战略研究院,四川成都610041

出　　处：《技术与市场》2024年第11期54-60,共7页Technology and Market

摘　　要：基于辐射环境自动监测站超大流量气溶胶采样器的运行环境和工作特点,对其现场校准装置进行了研究和探讨。研究小组根据不同原理的气体流量计特点,分别采用涡轮流量计原理、孔口流量计原理2种可以开展超大流量气溶胶采样器校准的流量校准装置进行了现场测试。现场测试表明,孔口流量计原理的流量校准装置对辐射自动监测站超大流量气溶胶采样器流量的校准准确可靠且易于操作。孔口流量计原理的校准装置具有测量精度高、便携和续航能力强等优点,可满足相关规范对流量示值误差的要求,为计量机构对超大流量气溶胶采样器开展现场校准提供技术支撑。Based on the operating environment and working characteristics of the ultra-high flow rate aerosol sampler at the radiation environment automatic monitoring station,its field calibration device was studied and explored.According to the characteristics of different principles of gas flowmeters,the research group conducted field tests using two flow calibration devices that can carry out the calibration of ultra-high-flow aerosol samplers,namely,the turbine flowmeter principle and the orifice flowmeter principle,respectively.The field tests show that the flow calibration device using the orifice flowmeter principle is accurate,reliable and easy to operate when calibrating the flow rate of the ultra-high flow aerosol sampler at the radiation automatic monitoring station.The orifice type flow calibration device has the advantages,such as high measurement accuracy,portability and endurance.After calibrating the ultra-large flow sampler,it meets the provisions of the HJ 1009-2019 specification on the flow rate error,which provides technical support for metrological institutions to carry out on-site calibration of ultra-high flow aerosol samplers.

关 键 词：孔口流量计 超大流量气溶胶采样器 辐射环境监测 涡轮流量计 现场校准 

分 类 号：TH814[机械工程—仪器科学与技术]