On the Monitoring Method of Vibration Signal in the Ball Mill Shell
-
摘要: 针对球磨机料位检测的现实需要,提出了一种球磨机筒体振动信号采集方法。结合筒内料位分布特点,确定了筒体振动传感器类型和测点位置;给出了筒体信号无线采集的总体结构;基于钢球冲击模型和理想化钢球分层模型,并结合采集的筒体实际振动数据确定了振动信号的采样频率、采样点数、采样区域等参数,某电厂现场采集球磨机筒体振动数据表明了该方法的有效性。Abstract: Aiming at the measurement requirement for the filling level of ball mill,a new monitoring approach for vibration signals of the mill shell is proposed. Firstly,the type and install position for sensors are determined combining the distribution of filling level in ball mill. Secondly,the main structure of wireless sampling system is given. Finally,the sampling frequency,number and region for the vibration signal of mill shell are obtained based on the steel ball impact model and the ideal layered model of the steel ball combining the practical vibration data of power plant. The results demonstrate that the present monitoring method is effective.
-
Key words:
- cutoff frequency /
- calculations /
- mathematical models /
- measurements
-
[1] Wang H,Jis M P,Huang P. A study on a new algorithm to optimize ball mill system based on modeling and GA[J].Energy Conversion & Management,2010,(04):846-850. [2] 吕剑虹,郭颖,吴科. 中储式钢球磨制粉系统的自适应模糊控制[J].热能动力工程,2007,(04):418-422. [3] 张正坤,徐立东,周臻. 钢球磨煤机制粉系统的经济运行分析[J].中国电力,2003,(03):17-20. [4] Zou J W,Su Z G,Lin Z D. Vibration Characteristics for reflecting level of coal powder filling in an industrial tubular ball mill[J].Proceedings of the CSEE,2008,(35):71-78. [5] Su Z G,Wang P H,Yu X J. Experimental investigation of vibration signal of an industrialtubular ball mill:monitoring and diagnosing[J].Minerals Engineering,2007,(10):699-710. [6] 吕权息,汪思源,张翔. 振动信号在球磨机料位监测系统的运用研究[J].控制系统及其应用,2002,(02):32-34. [7] Behera B,Mishra B K,Murty C V R. Experimental analysis of charge dynamics in tumbling mills by vibration signature technique[J].Minerals Engineering,2007,(01):84-91. [8] Kart G,G erardo P,Jamie R. Improving ball mill control with modem tools based on digital signal processing (DSP) Technology[A].Dallas,2003.311-318. [9] 陈荐. 钢球磨煤机噪声控制技术[M].北京:中国电力出版社,2002. [10] 薛璞. 振动理论及应用[M].西安:西北工业大学出版社,1998. [11] 王国强,李文亮,于相军. 球磨机回转体有限元分析[J].中国水泥,2006,(02):58-61. [12] 吴吴. 球磨机噪声机理研究[D].沈阳:沈阳工业大学,2007. [13] 赵薇. 基于振动信号的球磨机料位检测方法[D].南京:东南大学,2008.
点击查看大图
计量
- 文章访问数: 100
- HTML全文浏览量: 19
- PDF下载量: 5
- 被引次数: 0