PMS-800大流量大气颗粒物采样器的研制  

Development of PMS -800 At mospheric Particulate Sampler

作　　者：常印忠[1] 刘龙波[2] 王世联[1] 刘蜀疆[1] 王军[1] 万可友[2] 吴艳敏[2] 陈占营[1] 樊元庆[1] 李奇[1] 贾怀茂[1] 张新军[1] 

机构地区：[1]禁核试北京国家数据中心和北京放射性核素实验室,北京100085 [2]西北核技术研究所,西安710024

出　　处：《辐射防护》2011年第1期39-44,49,共7页Radiation Protection

摘　　要：大气颗粒物采样器是《全面禁止核试验条约》(CTBT)中放射性核素监测的关键设备之一。结合实验室实际情况,成功研制了PMS-800大流量大气颗粒物采样器。PMS-800采用变频技术保持流量稳定,自动控制软件可实现采样过程的控制、数据采集和数据处理功能;用聚丙烯纤维滤材作为颗粒物的收集介质。对采样器的性能测试结果为:最大采样流量可达800 m3.h-1以上,流量不确定度小于5%;采样期间流量波动在±5%之内;当负载达到20 kPa时,实现停机保护;采样滤材对0.2μm气溶胶的收集效率为82.5%;自采样开始每10 min存储一次系统参数。该采样器满足CTBT相关技术文件的要求。Atmospheric particulate sampler is one of important equipment for monitoring the radionuclides for Comprehensive Nuclear-test Ban Treaty（CTBT）.PMS-800 high-volume atmospheric particulate sampler was developed according to the condition of the radionuclide laboratory.PMS-800 consists of indoor part and outdoor part.A variable frequency technique was used to control the flowrate.The controlling software can control sampling process;it also can collect and analyze data.Polypropylene filter was used as collection substrate.The performance of the sampler was evaluated,and the results showed that the maximum flowrate of the sampler was over 800 m3·h-1,and the uncertainty of the flowrate is less than 5%.The flowrate was stable in ±5% while sampling.PMS-800 can run down automatically for protecting the machine when the load is 20 kPa.The collection efficiency of the filter for 0.2 μm aerosol was 82.5%.It can save the system parameters every 10-minute.PMS-800 meet the specifications of CTBT.

关 键 词：大流量 稳流 大气颗粒物 采样器 研制 

分 类 号：X851[环境科学与工程—环境工程]