[1]丁佐榕,李健,王胜南,等.基于ESMD的浓相气力输送颗粒静电信号分析及速度测量[J].东南大学学报(自然科学版),2016,46(5):1032-1037.[doi:10.3969/j.issn.1001-0505.2016.05.023]
 Ding Zuorong,Li Jian,Wang Shengnan,et al.Analysis of particle electrostatic signals and velocity measurement in dense pneumatic conveying system based on ESMD[J].Journal of Southeast University (Natural Science Edition),2016,46(5):1032-1037.[doi:10.3969/j.issn.1001-0505.2016.05.023]
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基于ESMD的浓相气力输送颗粒静电信号分析及速度测量()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
46
期数:
2016年第5期
页码:
1032-1037
栏目:
机械工程
出版日期:
2016-09-20

文章信息/Info

Title:
Analysis of particle electrostatic signals and velocity measurement in dense pneumatic conveying system based on ESMD
作者:
丁佐榕李健王胜南许传龙王式民
东南大学能源与环境学院, 南京210096
Author(s):
Ding Zuorong Li Jian Wang Shengnan Xu Chuanlong Wang Shimin
School of Energy and Environment, Southeast University, Nanjing 210096, China
关键词:
浓相气力输送 静电信号 极点对称模态分解 流动稳定性 空间滤波
Keywords:
dense pneumatic conveying electrostatic signal extreme-point symmetric mode decomposition(ESMD) flow stability spatial filtering
分类号:
TH934
DOI:
10.3969/j.issn.1001-0505.2016.05.023
摘要:
针对浓相气力输送中颗粒相的复杂流动特性,采用极点对称模态分解方法分析静电环状和弧状阵列信号.研究了多种工况下输送系统启停过程和过渡过程中不同分解模态静电信号的能量和频率分布信息特性,提出了一种新的浓相气力输送颗粒速度测量方法,并进行实验验证.研究结果表明,环状电极静电信号的能量分布信息能够用来判断输送系统在启停过程中颗粒流动的稳定性;弧状电极静电信号的能量信息可用来判断管道内颗粒相的分布情况.文中提出的静电信号瞬时频率颗粒速度测量方法相比于空间滤波测速法,其特征系数的相对标准差至少降低58%,表明该速度测量方法可以稳定并准确测量浓相气力输送颗粒速度.
Abstract:
Considering the complex flow characteristics of particle phase in dense pneumatic conveying system, electrostatic signals of electrostatic ring and arc array sensors were analyzed by using extreme-point symmetric mode decomposition(ESMD)method. The energy and frequency distribution properties of the electrostatic signals in different decomposed modes were studied during the startup, middle time and shut down process of dense pneumatic conveying system under different conditions. A new method for particle velocity measurement in dense pneumatic conveying system was proposed, and experimental verification was conducted. The results show that the energy distribution of ring electrostatic signal can be used to identify the flow stability of particles in the conveying system during the process of startup and shut down; the energy distribution of arc array electrostatic signal can be used to discern the distribution of solids inside the pipe.Compared with spatial filtering velocity measuring method, the relative standard deviation of the correction factor of the proposed method decreases 58% at least, indicating that the new method can measure the solid velocity of pneumatic conveying stably and accurately.

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备注/Memo

备注/Memo:
收稿日期: 2016-02-18.
作者简介: 丁佐榕(1991—),男,硕士生;许传龙(联系人),男,博士,教授,博士生导师,chuanlongxu@seu.edu.cn.
基金项目: 国家自然科学基金面上资助项目(51376049)、“十二五”国家科技支撑计划资助项目(2015BAA03B02)、江苏省自然科学基金杰出青年基金资助项目(BK20150023).
引用本文: 丁佐榕,李健,王胜南,等.基于ESMD的浓相气力输送颗粒静电信号分析及速度测量[J].东南大学学报(自然科学版),2016,46(5):1032-1037. DOI:10.3969/j.issn.1001-0505.2016.05.023.
更新日期/Last Update: 2016-09-20