摘要
传统蒸汽炉水盒采用浮标式进行水位测量,容易污染水位,而且无法实现多档水位的准确检测。文章提出一种非接触式多档水盒水位检测技术。在详细的电容水位测量理论基础上,通过在蒸汽炉水盒外壁安装电容水位检测模块,使用变频斜率的水位判断算法,实现了蒸汽炉水盒多档水位测量。采用DOE方法设置水位判断阈值,大大提高水位判断的一致性与准确性。实验结果表明,本技术可实现蒸汽炉水盒多档水位的精准测量。DOE的水位阈值设置方法可有效兼容水盒安装误差和水温差异,提高水位检测的一致性与可靠性。
The traditional steam boiler water box adopts buoy type to measure the water level, which is easy to pollute the water level, and it is unable to realize the accurate detection of multiple water levels. In this paper, a non-contact water level detection technology for multiple water boxes is proposed. Based on the detailed theory of capacitance water level measurement, by installing the capacitance water level detection module on the outer wall of the steam boiler water box and using the water level judgment algorithm of frequency conversion slope, the multi-stage water level measurement of the steam boiler water box is realized. DOE method is used to set the threshold value of water level judgment, which greatly improves the consistency and accuracy of water level judgment. The experimental results show that the technology can realize the accurate measurement of the water level in the water box of the steam boiler. DOE’s water level threshold setting method can effectively compatible with water box installation error and water temperature difference, and improve the consistency and reliability of water level detection.
作者
钟广雄
何春华
黎青海
Zhong Guangxiong;He Chunhua;Li Qinghai(South China University of Technology,Guangzhou 510641,China;Midea Group,Foshan 528311,China)
出处
《无线互联科技》
2020年第7期162-165,共4页
Wireless Internet Technology
关键词
蒸汽炉
非接触电容式水位检测
变频斜率检测
实验设计阈值设置
steam furnace
non-contact capacitive water level detection
frequency conversion slope detection
design of experiment threshold setting
