电站锅炉颗粒介质中声波传播速度的数值研究

详细信息    查看官网全文

• 英文论文题名：Numerical study of acoustic velocity in particle medium of power plant
• 论文作者：许伟龙 ; 姜根山 ; 刘月超 ; 崔淑媛
• 英文论文作者：XU Wei-long ; JIANG Gen-shan ; LIU Yue-chao ; CUI Shu-yuan ; School of Energy Power and Mechanical Engineering ; North China Electric Power University ; School of Mathematics and Physics ; North China Electric Power University
• 年：2016
• 作者机构：华北电力大学能源动力与机械工程学院;华北电力大学数理学院;
• 论文关键词：电站锅炉 ; 声速 ; 多体多次散射理论 ; 颗粒介质
• 英文论文关键词：boiler ; acoustic velocity ; multi-body multiple scattering theory ; particle medium
• 会议召开时间：2016-10-28
• 会议录名称：2016年全国声学学术会议论文集
• 语种：中文
• 分类号：TM621.2;O422
• 学会代码：OGSM
• 会议名称：2016年全国声学学术会议
• 会议地点：中国湖北武汉
• 主办单位：中国声学学会
• 学会名称：中国声学学会
• 页数：4
• 文件大小：722k
• 原文格式：D
• 会议级别：全国

摘要

声波在电站锅炉中的传播特性对于声学技术应用于电站设备状态监测与控制具有十分重要的意义。本文分析研究了电站锅炉颗粒介质中可听声频段的声波的声速,得到了颗粒介质中声波的传播速度与烟气温度、声波频率、颗粒粒径大小以及颗粒体积浓度有关。建立了炉膛中的声速计算公式。并根据多体多次散射理论,对浓度较大的流化床锅炉中的声衰减特性进行了讨论并对声速进行了修正。
The characteristics of sound propagation in furnace is of great significance for acoustic technology applied in power plant for equipment state monitoring and control. In this paper, acoustic velocity in the furnace has been analyzed in the range of sonic frequencies. A formula of acoustic velocity has been established, some curves has been depicted to describe the relationship between the ratio of acoustic velocity with the sound frequency and concentration and particle size and the gas temperature. The velocity in fluidized bed boiler has also been discussed and the formula has been fixed, based on multi-body multiple scattering theory.

引文

[1]姜根山,安连锁,田静.吕亚东.炉管泄漏口喷流噪声的辐射特性[J].中国电机工程学报,2010,30(29):24-29.Jiang Genshan,An Liansuo,Tian Jing,Lv Yadong.Acoustic Radiation Characteristics of Jet Noise From a Boiler-tube Leakage Hole[J].Proceeding of the CSEE,2010,30(29):24-29.
    [2]李言钦,周怀春.何其伟.采用声波法监测四角切圆流场二维分布特性的模拟研究[J].中国电机工程学报,2003,23(11):219-223.Li Yanqin,Zhou Huaichuan,He Qiwei.Simulation study on monitoring the two-dimensional characteristics of the tangential flow field by using an aocustic method[J].Proceeding of the CSEE,2003,23(11):219-223.
    [3]沈国清,安连锁,姜根山.张波.基于声学CT重建炉膛二维温度场的仿真研究[J].中国电机工程学报,2007,27(02):11-14.Shen Guoqing,AN Liansuo,Jiang Genshan,Zhang Bo.Simulation of Two-dimensional Temperature Field in Furnace Based on Acoustic Computer Tomography[J].Proceeding of the CSEE,2007,27(02):11-14.
    [4]Jiang G.,Zheng Y.,Pan J..Tian J.The enhancement of pulverized-coal combustion by using sound waves[J].The Journal of the Acoustical Society of America,2012,131(4):3468-3468.
    [5]杜功焕,朱哲明,龚秀芬.声学基础[B].南京:南京大学出版社,2001.Du Gonghuan,Zhu Zheming,Gong Xiufen.Principles of Sound[M].Nanjing:Nanjing University Press,2001.
    [6]钱祖文.散砂及表层海洋(砂质)沉积物中的声速[J].声学学报(中文版),2008,33(05):385-388.Qian Zuwen.Sound speed in air-filled sands and marine shallow-layer sediments(sands)[J].ACTA ACUSTICA,2008,33(5):385-388.