罗茨风机的隔振及振动稳定性的分析
发布时间：2018-11-03 15:50
【摘要】：罗茨风机是一种典型的容积式鼓风机,具有压力高、流量受阻力影响小、供风稳定等优点。但在使用的过程中也普遍存在着振动大、噪声高的缺点。为了适应现代工业的要求,采取一定的措施来减小罗茨风机的振动是很有必要的,罗茨风机的隔振研究也是很有价值的。 本文以罗茨风机为研究对象,对其隔振系统,振动特性等方面做了深入而系统的研究,分析了经典隔振理论在现代隔振系统设计中的应用。并对传统的单层隔振系统的振动特性进行分析,探索影响隔振系统稳定性的一些因素,进而为实际工程中的隔振设计提供参考。 在振动分析方面,本文从能量的角度研究了隔振系统功率流传递特性。系统的研究了功率流理论,以及诺顿等效原理在功率流理论中的应用。并以实际工程为背景,设计一套隔振系统,分析了振动隔离中,机械阻抗概念及理论的应用。对较为复杂的隔振系统功率流传递的基本特性进行了系统的研究。 通过阅读大量文献,建立了隔振系统的力学模型以及功率流传递模型,并且引用电气学科的有关理论,将分析电路时应用的诺顿等效分析法应用到隔振系统的功率流表达式的推倒过程中来。再通过传统设计方法,Matlab数学工具编程和实际测量三种方式对隔振系统的振幅进行计算,比较三种方式所得结果,可知利用诺顿等效原理简化系统模型并利用功率流表达式计算出的隔振系统振幅比传统方法计算的振幅更接近实际测量值。最后将研究结论应用到工程实际中去,结合“某工厂污水处理用罗茨风机机组振动控制”项目验证了结论的可靠性。
[Abstract]:Roots blower is a kind of typical volumetric blower which has the advantages of high pressure little influence of resistance and steady air supply. However, in the process of use, there are also the shortcomings of large vibration and high noise. In order to meet the requirements of modern industry, it is necessary to take some measures to reduce the vibration of Roots fan. In this paper, the vibration isolation system and vibration characteristics of Roots fan are studied deeply and systematically, and the application of classical vibration isolation theory in the design of modern vibration isolation system is analyzed. The vibration characteristics of the traditional single-layer isolation system are analyzed, and some factors affecting the stability of the isolation system are explored, which will provide a reference for the vibration isolation design in practical engineering. In the aspect of vibration analysis, the power flow transfer characteristics of vibration isolation system are studied from the point of view of energy. The power flow theory and the application of Norton equivalent principle in power flow theory are studied systematically. On the background of practical engineering, a vibration isolation system is designed, and the concept of mechanical impedance and its application in vibration isolation are analyzed. The basic characteristics of power flow transfer in complex vibration isolation system are systematically studied. By reading a lot of literature, the mechanical model and power flow transfer model of vibration isolation system are established, and the relevant theories of electrical science are cited. The Norton equivalent analysis method used in circuit analysis is applied to push down the power flow expression of vibration isolation system. Then the amplitude of vibration isolation system is calculated by traditional design method, Matlab mathematical tool programming and actual measurement, and the results obtained by the three methods are compared. It is known that the amplitude of the vibration isolation system calculated by using the Norton equivalent principle and the power flow expression is closer to the actual measured value than that calculated by the traditional method. Finally, the conclusion is applied to the engineering practice, and the reliability of the conclusion is verified by the project of "Vibration Control of Roots Fan Unit for sewage treatment in a Plant".
【学位授予单位】：沈阳工业大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH444;TB535.1
本文编号：2308235
[Abstract]:Roots blower is a kind of typical volumetric blower which has the advantages of high pressure little influence of resistance and steady air supply. However, in the process of use, there are also the shortcomings of large vibration and high noise. In order to meet the requirements of modern industry, it is necessary to take some measures to reduce the vibration of Roots fan. In this paper, the vibration isolation system and vibration characteristics of Roots fan are studied deeply and systematically, and the application of classical vibration isolation theory in the design of modern vibration isolation system is analyzed. The vibration characteristics of the traditional single-layer isolation system are analyzed, and some factors affecting the stability of the isolation system are explored, which will provide a reference for the vibration isolation design in practical engineering. In the aspect of vibration analysis, the power flow transfer characteristics of vibration isolation system are studied from the point of view of energy. The power flow theory and the application of Norton equivalent principle in power flow theory are studied systematically. On the background of practical engineering, a vibration isolation system is designed, and the concept of mechanical impedance and its application in vibration isolation are analyzed. The basic characteristics of power flow transfer in complex vibration isolation system are systematically studied. By reading a lot of literature, the mechanical model and power flow transfer model of vibration isolation system are established, and the relevant theories of electrical science are cited. The Norton equivalent analysis method used in circuit analysis is applied to push down the power flow expression of vibration isolation system. Then the amplitude of vibration isolation system is calculated by traditional design method, Matlab mathematical tool programming and actual measurement, and the results obtained by the three methods are compared. It is known that the amplitude of the vibration isolation system calculated by using the Norton equivalent principle and the power flow expression is closer to the actual measured value than that calculated by the traditional method. Finally, the conclusion is applied to the engineering practice, and the reliability of the conclusion is verified by the project of "Vibration Control of Roots Fan Unit for sewage treatment in a Plant".
【学位授予单位】：沈阳工业大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH444;TB535.1
【引证文献】
相关期刊论文 前1条
1 刘秋滨;;罗茨风机常见故障分析与技术改进[J];科技创新与应用;2013年19期
，本文编号：2308235
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