【摘要】：羅茨風(fēng)機(jī)是一種典型的容積式鼓風(fēng)機(jī),具有壓力高、流量受阻力影響小、供風(fēng)穩(wěn)定等優(yōu)點(diǎn)。但在使用的過程中也普遍存在著振動大、噪聲高的缺點(diǎn)。為了適應(yīng)現(xiàn)代工業(yè)的要求,采取一定的措施來減小羅茨風(fēng)機(jī)的振動是很有必要的,羅茨風(fēng)機(jī)的隔振研究也是很有價(jià)值的。 本文以羅茨風(fēng)機(jī)為研究對象,對其隔振系統(tǒng),振動特性等方面做了深入而系統(tǒng)的研究,分析了經(jīng)典隔振理論在現(xiàn)代隔振系統(tǒng)設(shè)計(jì)中的應(yīng)用。并對傳統(tǒng)的單層隔振系統(tǒng)的振動特性進(jìn)行分析,探索影響隔振系統(tǒng)穩(wěn)定性的一些因素,進(jìn)而為實(shí)際工程中的隔振設(shè)計(jì)提供參考。 在振動分析方面,本文從能量的角度研究了隔振系統(tǒng)功率流傳遞特性。系統(tǒng)的研究了功率流理論,以及諾頓等效原理在功率流理論中的應(yīng)用。并以實(shí)際工程為背景,設(shè)計(jì)一套隔振系統(tǒng),分析了振動隔離中,機(jī)械阻抗概念及理論的應(yīng)用。對較為復(fù)雜的隔振系統(tǒng)功率流傳遞的基本特性進(jìn)行了系統(tǒng)的研究。 通過閱讀大量文獻(xiàn),建立了隔振系統(tǒng)的力學(xué)模型以及功率流傳遞模型,并且引用電氣學(xué)科的有關(guān)理論,將分析電路時(shí)應(yīng)用的諾頓等效分析法應(yīng)用到隔振系統(tǒng)的功率流表達(dá)式的推倒過程中來。再通過傳統(tǒng)設(shè)計(jì)方法,Matlab數(shù)學(xué)工具編程和實(shí)際測量三種方式對隔振系統(tǒng)的振幅進(jìn)行計(jì)算,比較三種方式所得結(jié)果,可知利用諾頓等效原理簡化系統(tǒng)模型并利用功率流表達(dá)式計(jì)算出的隔振系統(tǒng)振幅比傳統(tǒng)方法計(jì)算的振幅更接近實(shí)際測量值。最后將研究結(jié)論應(yīng)用到工程實(shí)際中去,結(jié)合“某工廠污水處理用羅茨風(fēng)機(jī)機(jī)組振動控制”項(xiàng)目驗(yàn)證了結(jié)論的可靠性。
[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".
【學(xué)位授予單位】：沈陽工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2012
【分類號】：TH444;TB535.1

【引證文獻(xiàn)】

相關(guān)期刊論文 前1條

1 劉秋濱;;羅茨風(fēng)機(jī)常見故障分析與技術(shù)改進(jìn)[J];科技創(chuàng)新與應(yīng)用;2013年19期

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本文編號：2308235