采用超声Lamb波测量钢球磨煤机的料位
|
摘要
采用仿真和实验的方法分析超声Lamb波在火电机组钢球磨煤机中的传播特性,研究钢球磨煤机料位测量的新方法。以某200MW火力发电机组钢球磨煤机为原形,建立了相应的实验装置。在合理的简化假设条件下,采用波动理论建立了固体颗粒负载层中Lamb波传播的理论模型。采用两层模型和单层模型进行分析,得到理论计算结果。并采用相速度测量和接收能量分析的方法,在实验台上进行对应的物理实验。将实验结果与理论计算进行比较,结果证明了理论模型的正确性。图14参11
The propagational characteristics of Supersonic Lamb waves in ball mills of power plants has been studied experimentally,and also by simulation,for the purpose of finding a new way of ascertaining the stuff's level in ball mills.An experimental installation has been built by taking a certain 200MW power set's ball mill as the original.By assuming reasonable simplifications,a theoretical model of Lamb wave propagation in a pile of solid granules was set up by making use of the theory of waves.Single and double layer models are used for the analysis and for obtaining calculation results.Corresponding physical experiments were conducted on a test rig with phase speed measurements and using reception energy analyzing method.Comparison of test and calculation results vindicate the correctness of the theoretical model.Figs 14 and refs 11.
The propagational characteristics of Supersonic Lamb waves in ball mills of power plants has been studied experimentally,and also by simulation,for the purpose of finding a new way of ascertaining the stuff's level in ball mills.An experimental installation has been built by taking a certain 200MW power set's ball mill as the original.By assuming reasonable simplifications,a theoretical model of Lamb wave propagation in a pile of solid granules was set up by making use of the theory of waves.Single and double layer models are used for the analysis and for obtaining calculation results.Corresponding physical experiments were conducted on a test rig with phase speed measurements and using reception energy analyzing method.Comparison of test and calculation results vindicate the correctness of the theoretical model.Figs 14 and refs 11.
引文
[1]Frank Babick,Frank Hinze.Dependence of ultrasonicattenuation on the material properties[J].Colloids andsurfaces A:physicochen.Eng.Aspects,2000,(172):33-46.
[2]Macro Dell’Isola.Measure of high-pressure natural gas flowusing ultrasonic flow meters[J].Measurement.1997,20(2):75-89.
[3]Willatzen M.Ultrasonic flow meter:temperature gradientsand transducer geometry effects[J].Ultrasonics,2003(41):105-114.
[4]阿肯巴赫[美].弹性固体中的波的传播[M].上海:同济大学出版社,1992.
[5]瑞克NH.粘弹性介质中的地震波[M].北京:地质出版社,1989.
[6]胡德绥.弹性波动力学[M].北京:地质出版社,1988.
[7]朱哲民.有液体层负载时薄板中类lamb波的传播[J].声学学报,1996,21(2):174~181.
[8]袁易全.近代声学原理及应用[M].南京:南京大学出版社,1996.4.
[9]陆小冬,朱哲民等.两侧有固体层负载时板中Lamb波的传播[J].应用声学,1995,15(2):12-16.
[10]张锐,万明习.低频超声类兰姆波超薄黏结复合结构定征方法[J].应用科学学报,2001,19(2):107-112.
[11]Eugene V.Malyarenko,Mark K.Hinders.Ultrasonic Lambwave diffraction tomography[J].Ultrasonics.2001(39):269-271.
[2]Macro Dell’Isola.Measure of high-pressure natural gas flowusing ultrasonic flow meters[J].Measurement.1997,20(2):75-89.
[3]Willatzen M.Ultrasonic flow meter:temperature gradientsand transducer geometry effects[J].Ultrasonics,2003(41):105-114.
[4]阿肯巴赫[美].弹性固体中的波的传播[M].上海:同济大学出版社,1992.
[5]瑞克NH.粘弹性介质中的地震波[M].北京:地质出版社,1989.
[6]胡德绥.弹性波动力学[M].北京:地质出版社,1988.
[7]朱哲民.有液体层负载时薄板中类lamb波的传播[J].声学学报,1996,21(2):174~181.
[8]袁易全.近代声学原理及应用[M].南京:南京大学出版社,1996.4.
[9]陆小冬,朱哲民等.两侧有固体层负载时板中Lamb波的传播[J].应用声学,1995,15(2):12-16.
[10]张锐,万明习.低频超声类兰姆波超薄黏结复合结构定征方法[J].应用科学学报,2001,19(2):107-112.
[11]Eugene V.Malyarenko,Mark K.Hinders.Ultrasonic Lambwave diffraction tomography[J].Ultrasonics.2001(39):269-271.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心