| 基于复杂性分析的流化床中流型的声发射检测 |
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| 引用本文： | 陈庆,石海涛,殷大斌,黄正梁,阳永荣.基于复杂性分析的流化床中流型的声发射检测[J].化工自动化及仪表,2009,36(3):67-69. |
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| 作者姓名： | 陈庆 石海涛 殷大斌 黄正梁 阳永荣 |
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| 作者单位： | 1. 中国石化扬子石油化工有限公司,塑料厂,南京,210048
2. 浙江大学,化学工程与生物工程学系,杭州,310027 |
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| 摘 要： | 运用声发射检测技术,对Unipol气相流化床中声发射信号沿床高的规律性变化进行考察,对声信号进行复杂性分析,提取信号的涨落复杂性及Lempel-Ziv复杂性作为特征参数,成功获得了工业流化床中的颗粒流动模式。对声发射信号进行能量分析和复杂性分析均发现,Unipol工业气相流化床中的流型是带有滞留区的双循环流动模式。研究结果表明,基于复杂性分析和声发射检测的流化床中流型的测量是可行的。
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| 关 键 词： | 流化床 流型 声发射 复杂性 |
Measurement of Flow Pattern in Fluidized Bed Based on Acoustic Emission and Complexity Analysis |
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| CHEN Qing,SHI Hai-tao,YIN Da-bin,HUANG Zheng-liang,YANG Yong-rong.Measurement of Flow Pattern in Fluidized Bed Based on Acoustic Emission and Complexity Analysis[J].Control and Instruments In Chemical Industry,2009,36(3):67-69. |
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| Authors: | CHEN Qing SHI Hai-tao YIN Da-bin HUANG Zheng-liang YANG Yong-rong |
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| Affiliation: | CHEN Qing , SHI Hai-tao , YIN Da-bin , HUANG Zheng-liang, YANG Yong-rong ( 1. Plastics Plant, Yangtse Co. , Ltd. , Nanjing 210048, China; 2. Department of Chemical Engineering and Biochemical Engineering, Zhejiang University, Hangzhou 310027, China) |
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| Abstract: | Researched on the regularity of change of acoustic emission signals along the height of Unipol gas phase fluidized bed by using acoustic emission detection technique. Extracted signal fluctuation complexity and Lempel-Ziv complexity as a characteristic parameter, granular flow model in industrial fluidized bed was successfully obtained. It was found that the flow pattern in Unipol industrial gas phase fluidized bed was a double circulation pattern by both complexity and energy analysis. The results show that it is practicable to measure flow pattern in fluidized bed based on acoustic emission technique and complexity analysis. |
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| Keywords: | fluidized bed flow pattern acoustic emission complexity |
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