Page 13 - 201806
P. 13

第 37 卷 第 6 期                                                                        Vol. 37, No.6
             2018 年 11 月                         Journal of Applied Acoustics                 November, 2018


             ⋄ 研究报告 ⋄



                      非侵入式超声波浆料浓度测量技术研究                                                          ∗





                                              夏多兵 苏明旭            †   田 昌


                                          (上海理工大学颗粒与两相流测量研究所           上海  200093)

                摘要 设计了一种基于非侵入式超声波透射衰减法的浆料浓度测量系统，根据超声传播衰减原理，建立超声
                衰减值与浆料浓度之间的关系。实验中采用生物显微镜和激光粒度仪对颗粒标称粒径进行验证，采用中心频
                率为 200 kHz 的超声波换能器，利用一发一收模式对超声波在有机玻璃管内的浆料进行非侵入式测量并分析
                透射波信号，对体积百分浓度小于 25%、不同粒径的石英砂浆料进行测量，通过拟合方法获得浆料温度、体积
                百分浓度与声衰减对应的关系，并据此构造浓度求解方程，通过现场实时在线测量并与取样结果进行对比验
                证方程的准确性，结果显示，本方法可有效测量浆料浓度。
                关键词     非侵入式，超声衰减，浆料浓度，在线测量
                中图法分类号: TB559           文献标识码: A          文章编号: 1000-310X(2018)06-0843-06
                DOI: 10.11684/j.issn.1000-310X.2018.06.002





                     Technology research on noninvasive ultrasonic slurry concentration
                                                     measurement



                                         XIA Duobing    SU Mingxu    TIAN Chang

                     (Institute of Particle and Two-phase Flow Measurement, University of Shanghai for Science and Technology,
                                                   Shanghai 200093, China)

                 Abstract  A slurry concentration measurement system based on noninvasive ultrasonic transmission attenu-
                 ation method was designed. Based on the principle of ultrasonic propagation and attenuation, the relationship
                 between the ultrasonic attenuation value and the slurry concentration was established. In the experiment,
                 biological microscope and laser particle size analyzer were used to verify the nominal particle size, ultrasonic
                 transducers with a center frequency of 200 kHz was used to conduct non-invasive measurement and analyze
                 the transmitted wave signal through the plexiglass tube by pitch-catch mode. The quartz sand with volume
                 concentration less than 25%, different particle size was measured. And the relationship curve between slurry
                 temperature, volume concentration and acoustic attenuation was obtained by fitting method. Based on the
                 relationship curve the volumetric fraction equation was figured out. The equation was verified by comparison
                 with the sampling results and on-site real-time online measurement. The results show that the method can
                 effectively measure the slurry concentration.
                 Key words Non-intrusive, Ultrasonic attenuation, Slurry concentration, Online measurement

             2018-04-19 收稿; 2018-09-04 定稿
             国家自然科学基金项目 (51776129)
             ∗
             作者简介: 夏多兵 (1993- ), 男, 安徽淮南人, 硕士研究生, 研究方向: 颗粒与两相流测量。
              通讯作者 E-mail: sumx@usst.edu.cn
             †
   8   9   10   11   12   13   14   15   16   17   18