干式排渣机渣斗冷却风温度声学测量技术应用研究  

Application of Acoustic Measurement Technique for Cooling Air Temperature in the Slag Bucket of Dry Slag Extractor

作　　者：房新 王露 曹巍 蒲思旭 刘西陲[2] 许传龙[2] 梅振锋[3] FANG Xin;WANG Lu;CAO Wei;PU Si-xu;LIU Xi-chui;XU Chuan-long;MEI Zhen-feng(CHN Energy Suqian Power Generation Co.,Ltd.,Suqian 223800,China;School of Energy and Environment,Southeast University,Nanjing 210096,China;Xi'an Thermal Power Research Institute Co.,Ltd.,Xi'an 710054,China)

机构地区：[1]国家能源集团宿迁发电有限公司,江苏宿迁223800 [2]东南大学能源与环境学院,江苏南京210096 [3]西安热工研究院有限公司,陕西西安710054

出　　处：《节能技术》2023年第3期260-266,共7页Energy Conservation Technology

摘　　要：实现干排渣机冷却风温实时测量与控制,对提高干渣机运行的经济性和可靠性具有重要作用。本文提出了一种基于声学的干式排渣机渣斗处冷却风温测量技术,并利用模极大值优化算法对声波信号进行降噪优化,提高信噪比,以保证冷却风温测量结果的准确性与稳定性。在此基础上,开发了干式排渣机渣斗冷却风温声学测量系统,并在国内某660 MW超临界机组进行了应用验证。结果表明,冷却风温的测量结果准确稳定,可跟踪机组负荷的变化,为干式排渣机经济运行优化提供了有力的检测技术支撑。The real-time measurement and control of the cooling air temperature play an important role in improving the economy and reliability of the dry slag extractor in coal-fired power plant.In this paper,an acoustic-based measurement technique for cooling air temperature in the slag bucket of dry slag extractor was proposed.To achieve the accurate and reliable measurement the cooling air temperature,the modulus maxima optimization algorithm was used to filter the noise in acoustic signal and improve the signal-to-noise ratio.On this basis,an acoustic measurement system for the cooling air temperature in the slag bucket of dry slag extractor was developed and verified in a 660 MW ultra supercritical unit.Results showed that the measurement results of the cooling air temperature were stable and accurate,which were able to track the load change of the unit and provide technical support for the economic and optimal operation of a dry slag extractor.

关 键 词：干式排渣机 声学测温 模极大值 冷却风温 

分 类 号：TM621.2[电气工程—电力系统及自动化]