基于LabVIEW的风粉浓度测量系统

Measurement System for Pulverized-coal Concentration Based on LabVIEW

风粉浓度的在线监测对污染排放、炉膛燃烧来说非常重要。为此,基于Lab VIEW软件,结合超声波在两相流中传播的理论模型,开发了一套风粉浓度在线测量系统,用于实现风粉浓度的在线实时监测。该测量系统通过高速数字采集卡将数据传送给计算机,由Lab VIEW对数据进行实时的采集、处理、显示和存储。试验结果表明该测量系统具有测量精度高、稳定可靠等优点,可推广到其他气固两相流测量系统中应用。

On-line measurement of pulverized-coal concentration is very important to the pollution and operation of power plant boiler. So this paper presents an on-line measurement system for pulverized-coal concentration combined with the basic principle of ultrasonic propagation in gas-solid flow according to theoretical model based on Lab VIEW,which can be used to online measurement for pulverized-coal concentration. The system transfers the data to PC through high-speed data acquisition device,and the data can be acquired,processed,exhibited and stored in real time. The result of trials show that the system features high measurement precision,excellent stability and reliability. Furthermore,the system can also be used in the measurement system of other gas-solid two phase flow.