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Study on Functions Validation of Test Devices for Separation Performance of PM2.5 Seperators
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摘要: 在环境颗粒物测量中，切割器是实现颗粒物粒径筛选和颗粒物精准收集的核心部件，切割器切割特性的测试和评价在颗粒物测量仪研究中具有重要的意义。切割器切割特性试验装置是对切割器进行性能评价的装置，用于测试切割器的切割特性曲线，进一步判断切割器是否符合使用要求。切割器切割特性试验装置影响着切割器切割特性评价的准确性，通过对切割器切割特性试验装置的关键参数、可行性和综合性能进行评价，为装置在应用中的准确可靠提供了理论和实验基础。Abstract: In measurement of environmental particles, PM2.5 separators are a core component for screening of particle sizes and accurate collection of particles. The test and evaluation of separation performance is of great significance in research on particle meters. The separation performance test device is used to evaluate the separator’s performance, which can give the performance curve and judge whether the separator meets the designed requirements. So the test device affects the accuracy of the separation performance. Through the evaluation of the key parameters, feasibility and comprehensive performance of the test device, it will provide a theoretical and experimental basis for the accuracy and reliability of the device in application.
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图 2 不加载切割器情况下的上下游一致性测试
Figure 2. Consistency test of upstream and downstream without separator
表 1 泵和粒径谱仪的流量校准试验
Table 1. Flow calibration of pump and laser aerosol particle size spectrometer
流量部件 流量设定值（L/min） 流量校准值（L/min） 平均值（L/min） 1 2 3 4 5 6 泵 13.67 13.66 13.68 13.67 13.67 13.68 13.67 13.67 粒径谱仪 3 3.1 3.1 3.0 3.0 3.1 3.1 3.1 
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表 2 纯空气下装置的颗粒物测试
Table 2. Test of the quantity of particles in clean air
颗粒粒径
（μm）测试次数 1 2 3 4 5 6 0.2～1.0 38 62 129 99 92 102 1.0～5.0 0 0 0 0 0 0
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表 3 纯水下装置的颗粒物测试
Table 3. Test of the quantity of particles in Purified Water
颗粒粒径
（μm）测试次数 1 2 3 4 5 6 0.2～1.0 1394 2556 185093 1408 800 390968 1.0～5.0 19 16 11 11 19 9
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表 4 标准切割器验证试验数据
Table 4. Test data of the standard separator
测试项目 目标颗粒标
称值（μm）目标颗粒空气动
力学直径（μm）次数 上游粒子数 下游粒子数 捕集效率% 捕集效率
平均值%1.5 μm切割效率测试 1.5 1.554 1 12961 12355 95.32 95.22 2 12568 12008 95.54 3 12495 11846 94.81 纯水清理管路 0 8 2.0 μm切割效率测试 2 1.915 1 18143 13908 76.66 75.26 2 18235 13757 75.44 3 17914 13201 73.69 空气清理管路 1 0 2.2 μm切割效率测试 2.2 2.168 1 12901 8203 63.58 64.24 2 12809 8183 63.88 3 12642 8248 65.24 空气清理管路 0 0 2.5 μm切割效率测试 2.5 2.554 1 9143 3222 35.24 35.3 2 9113 3242 35.58 3 9148 3209 35.08 纯水清理管路 4 0 2.8 μm切割效率测试 2.8 2.731 1 7775 1385 17.81 17.73 2 7619 1328 17.43 3 7587 1362 17.95 空气清理管路 0 0 3.0 μm切割效率测试 3 2.824 1 7472 1000 13.38 13.40 2 7486 1001 13.37 3 7274 977 13.43 空气清理管路 0 0 3.5 μm切割效率测试 3.5 3.482 1 2789 105 3.76 3.99 2 2722 118 4.34 3 2774 107 3.86 空气清理管路 0 0 4.0 μm切割效率测试 4 4.262 1 2033 5 0.25 0.34 2 1971 6 0.30 3 1735 8 0.46
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