基于静电与电容集成传感器的密相气力输送煤粉流动参数在线测量研究  

Online Measurement of Dense Phase Pneumatically-conveyed Coal Particles by Electrostatic and Capacitance Integrated Sensor

作　　者：羊琛 李舒 李健[1] 毕大鹏 唐志永[4] 许传龙[1] YANG Chen1 LI Shu2 LI Jian1 , BI Da-peng3, TANG Zhi-yong4, XU Chuan-long1(1. MOE Key Laboratory of Energy Thermal Conversion and Control, Southeast University; 2. Science and Technology Development Department, Nanjing Institute of Measurement and Testing Technology; 3. Anhui KEDA Clean Energy Company Limited; 4. Institute of Low Carbon Transformation Science and Research, CAS Shanghai Institute of Advanced Studie)

机构地区：[1]东南大学能源热转换及其过程测控教育部重点实验室 [2]南京市计量监督检测院科技发展部 [3]安徽科达洁能股份有限公司 [4]中国科学院上海高等研究院低碳转化科学与研究中心

出　　处：《化工自动化及仪表》2018年第8期621-624,共4页Control and Instruments in Chemical Industry

基　　金：国家科技支撑项目(2015BAA03B02);中国科学院低碳转化科学与工程重点实验室开放基金项目(KLLCCSE-201703)

摘　　要：提出了一种静电与电容传感器集成测量系统,用于监测低压下密相气力输送煤粉颗粒的流动参数(速度、浓度和质量流量)。在该系统中,环状静电传感器用于颗粒速度测量,螺旋电容传感器用于颗粒浓度测量。在不同工况下,对煤粉颗粒的流动参数进行了测量,并系统研究了输送系统运行参数(角阀开度、流化风量、补充风量和给料罐压力)对煤粉颗粒速度、浓度和质量流量的影响。结果表明,该系统能够对密相气力输送煤粉颗粒流动参数进行可靠的在线测量。In this paper,a measuring system which integrating the electrostatic and capacitance sensors was developed and applied to monitor the flow parameters（ velocity,concentration,and mass flow rate） of pulverized coal particles. In which,two ring-shaped electrostatic sensors were used for the particle velocity measurement and a helical capacitance sensor was adopted for the particle concentration measurement. The measurements of the particle flow parameters under various operation conditions were carried out,including the investigation of the effects of the operation parameters of the pneumatic conveying system（ the angle valve opening,the fluidized gas and supplement gas flow rates,the pressure within the feeding tank） on the particle velocity,concentration and mass flow rate. Results indicate that,this system can on-line measure the dense phase pneumatically-conveyed coal particles flow parameters reliably.

关 键 词：集成测量系统 静电传感器 电容传感器 流动参数 在线测量 煤粉 

分 类 号：TH865[机械工程—仪器科学与技术]