催化剂加料器计量组件摩擦自激振动分析

PDF(1568 KB)

振动与冲击 ›› 2023, Vol. 42 ›› Issue (11) : 115-121.

论文

催化剂加料器计量组件摩擦自激振动分析

张宏，张文涛，侯集，张嘉

作者信息 +

Analysis of friction self-excited vibration of catalyst feeder metering components

ZHANG Hong, ZHANG Wentao, HOU Ji, ZHANG Jia

Author information +

文章历史 +

摘要

针对聚乙烯生产中催化剂加料器强制下料故障频发的问题，本研究基于加料器计量组件摩擦副接触不紧密引发强制下料的观点，提出通过分析计量组件摩擦自激振动特性探究强制下料发生机制的新思路，应用有限元复特征值法对计量组件摩擦自激振动特性进行了分析，分析表明现役计量组件在正常工况下易发生摩擦自激振动，且摩擦自激振动会改变浮动盘与计量盘之间的接触状态，是引发强制下料的重要原因。进一步地，将参数不确定性引入计量组件系统，基于响应面代理模型对系统摩擦振动性能进行可靠性评估，结果显示计量组件在考虑参数不确定时较理想设计状态更容易发生摩擦自激振动，摩擦振动性能亟待提高。参数全局灵敏度分析结果表明优化浮动盘相关参数是提升系统摩擦振动性能的重点，最后，结合参数影响性分析，从摩擦振动的角度给出了计量组件改进具体措施。以上研究结果可为加料器强制下料发生机制研究及计量组件优化设计提供有益参考。

Abstract

In view of the frequent malfunction of forced feeding of catalyst feeder in polyethylene production, this study is based on the point of view that the contact of friction pair of feeder metering components is not close enough to cause forced feeding. A new idea of exploring the mechanism of forced feeding by analyzing the characteristics of friction self-excited vibration of metering components is put forward, and the friction self-excited vibration characteristics of metering components are analyzed by using the complex eigenvalue method of finite element method. The analysis shows that the metering components are prone to friction self-excited vibration under normal working conditions, and the friction self-excited vibration will change the contact state between the floating disk and the metering plate, which is an important reason for forced blanking. Furthermore, the parameter uncertainty is introduced into the metering component system, and the reliability of the friction vibration performance of the system is evaluated based on the response surface agent model. The results show that when considering the parameter uncertainty, the metering component is more prone to friction self-excited vibration than the ideal design state, and the friction vibration performance needs to be improved urgently. The results of global sensitivity analysis of parameters show that further optimization of floating disk parameters is the key to improve the friction vibration performance of the system. Finally, combined with the analysis of the influence of parameters, the specific measures to improve the metering components are given from the point of view of friction vibration. The above research results can provide a useful reference for the study of the mechanism of forced feeding of feeder and the optimal design of metering components.

导出引用

张宏，张文涛，侯集，张嘉. 催化剂加料器计量组件摩擦自激振动分析[J]. 振动与冲击, 2023, 42(11): 115-121

ZHANG Hong, ZHANG Wentao, HOU Ji, ZHANG Jia. Analysis of friction self-excited vibration of catalyst feeder metering components[J]. Journal of Vibration and Shock, 2023, 42(11): 115-121

参考文献

[1] 任映浩. MKQZ-V型干粉催化剂加料器的优势探讨[J]. 上海化工, 2020, 45(04): 65-68.
REN Ying-hao, Discussion on the advantages of MKQZ- V Type dry Powder Catalyst feeder [J]. Shanghai Chemical Industry, 2020, 45(04): 65-68.
[2] 莫才颂，王珊，吴海智. 全密度加料器故障分析及改进[J]. 石油化工设备, 2011, 40(04): 84-85.
Mo Cai-song，WANG Shan，WU Hai-zhi. Analysis of All Density Feeding Equipment Fault Cause and Improvement Measures [J]. Petro-Chemical Equipment, 2011, 40(04): 84-85.
[3] 卢玉坤，石志俭，王海平. 聚乙烯固体催化剂加料技术改进[J]. 齐鲁石油化工, 2006(04): 410-413.
Lu Yu-kun, Shi Zhi-jian, Wang Hai-ping. Improvement of feeding Technology of Polyethylene solid Catalyst [J]. QILU Petrochemical Technology, 2006(04): 410-413.
[4] Wei N, Rose P M, Lin C, et al. Powder feeder apparatus[P]. US19890397988. 1993-05-11.
[5] 赵军武. 气相法聚乙烯固体催化剂加料器故障处理[J]. 广石化科技, 2009(2).

Zhao Jun-wu. Fault treatment of fumed polyethylene solid catalyst feeder [J]. Guangzhou Petrochemical Science and Technology, 2009(2).
[6] 张宏，刘旭东，梁栋，等.一种改进的对计量盘密封力可调的微粉计量装置及对应调节方法[P]. CN202011067459.5 2021-02-05.
Zhang Hong, Liu Xu-dong, Liang Dong, et al. An improved micro-powder metering device with adjustable sealing force of metering plate and its corresponding adjusting method [P]. CN202011067459.5 2021-02-05.
[7] Wang D W, Mo J L, Wang X F, et al. Experimental and numerical investigations of the piezoelectric energy harvesting via friction-induced vibration[J]. Energy Conversion and Management, 2018, 171: 1134-1149.
[8] Chen G. Handbook of Friction-Vibration Interactions[M]. Elsevier Ltd, 2014: 1-386.
[9] Qian W J, Chen G X, Zhou Z R. Dynamic transient analysis of squealing vibration of a reciprocating sliding system[J]. Wear, 2013, 301(1-2): 47-56.
[10] Qian W J, Chen G X, Zhang W H, et al. Friction-Induced, Self-Excited Vibration of a Pantograph-Catenary System[J]. Journal of Vibration and Acoustics, 2013, 135(5).
[11] Abubakar A R, Ouyang H. Complex eigenvalue analysis and dynamic transient analysis in predicting disc brake squeal[J]. International Journal of Vehicle Noise and Vibration, 2006, 2(2): 143-155.
[12] 崔晓璐, 漆伟, 杜子学, 等. 山地城市地铁线路曲线段异常波磨现象的产生机理及抑制方法[J]. 振动与冲击, 2021,40(14): 228-236.
CUI Xiaolu，QI Wei，DU Zixue, et al. Generation mechanism and suppression method for the abnormal phenomenon of rail corrugation in the curve interval of a mountain city metro [J]. Journal Of Vibration And Shock, 2021,40(14): 228-236.
[13] Calvert W U S, Handwerk R U S. PARTICULATE SOLIDS INJECTOR APPARATUS[P]. US3779712. 1973-12-18.
[14] 吕辉，于德介，陈宁，等. 引入不确定参数的汽车盘式制动器振动稳定性分析[J]. 振动工程学报, 2014, 27(06): 900-906.
Lü Hui, Yu De-jie, Chen Ning, et al. Analysis of automotive disc brake systems vibration stability by introducing uncertain parameters [J]. Journal of vibration engineering, 2014, 27(06): 900-906.
[15] 席喜林. 干气密封用C形密封圈力学性能和泄漏率的有限元分析[D]. 兰州理工大学，2017.
Xi Xi-lin. The status performance and leakage rate finite element analysis for the C-rings in dry gas seal [D]. Lanzhou University of Technology，2017.
[16] Chen G X, Zhou Z R, Ouyang H, et al. A finite element study on rail corrugation based on saturated creep force-induced self-excited vibration of a wheelset–track system[J]. Journal of sound and vibration, 2010, 329(22): 4643-4655.
[17] Lü H, Yu D. Stability Analysis and Improvement of Uncertain Disk Brake Systems With Random and Interval Parameters for Squeal Reduction[J]. Journal of vibration and acoustics, 2015, 137(5).
[18] 郑涛. 基于复模态分析的盘式制动器仿真优化[D]. 杭州: 浙江大学, 2018.
Zheng Tao. Simulation Optimization of Disc Brake Based on Complex Modal Analysis[D]. Zhejiang university,2018.
[19] 张立军，唐传骏，庞明，等. 制动盘的约束模态与自由模态对比分析 [C]// 2013中国汽车工程学会年会论文集. 中国北京：中国汽车工程学会，2013. 1236-1244.
Zhang Li-jun, Tang Chuan-jun, Pang Ming, et al. Comparison between the Free and Constrained Modal Characteristics of Brake Rotor [C] //Proceedings of the Annual meeting of the Chinese Society of Automotive Engineering in 2013. Beijing, China ：Chinese Society of Automotive Engineering，2013. 1236-1244.
[20] 张伟伟. 气动外形优化设计中的不确定性及高维问题研究[M]. 西安: 西北工业大学出版社, 2020.
Zhang Wei-wei. Research on uncertainty and High-dimensional problems in aerodynamic shape Optimization Design [M]. Xi-an: Northwest University of Technology Press, 2020.
[21] 李慧乐. 基于车桥耦合振动的桥梁动应力分析及疲劳性能评估[D]. 北京交通大学, 2016.
Li Hui-le. Dynamic Stress Analysis and Fatigue Performance Assessment of Bridges Based on Vehicle-Bridge Coupling Vibration [D]. Beijing Jiaotong University, 2016.
[22] Sobol I M. Global sensitivity indices for nonlinear mathematical models and their Monte Carlo estimates[J]. Mathematics and computers in simulation, 2001, 55(1): 271-280.
[23] 钱韦吉, 黄志强. 摩擦因数对摩擦自激振动影响规律的数值分析[J]. 振动与冲击, 2018,37(18): 224-230.
QIAN Weiji，HUANG Zhiqiang. Numerical analysis on the effects of friction coefficient on the friction-induced self-excited vibration[J]. Journal of vibration engineering, 2018,37(18): 224-230.
[24] 肖祥龙, 陈光雄, 莫继良, 等. 摩擦调节剂抑制钢轨波磨的机理研究[J]. 振动与冲击, 2013,32(08): 166-170.
XIAO Xiang-long,CHEN Guang-xiong,MO Ji-liang, et al. Mechanism for friction to suppress a wear type rail corrugation[J]. Journal of vibration engineering, 2013,32(08): 166-170.