本文關(guān)鍵詞：齒輪耦合的壓縮機轉(zhuǎn)子系統(tǒng)動力學(xué)特性研究　出處：《東北大學(xué)》2011年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 轉(zhuǎn)子系統(tǒng) 齒輪耦合 聯(lián)軸器不對中 振動特性

【摘要】：在含有齒輪傳動的高速轉(zhuǎn)子系統(tǒng)中,進行轉(zhuǎn)子系統(tǒng)的動力學(xué)分析時應(yīng)該充分的考慮到齒輪的嚙合作用。齒輪間的徑向力、切向力會同時引起轉(zhuǎn)子系統(tǒng)的彎曲振動及扭轉(zhuǎn)振動,即而引起轉(zhuǎn)子系統(tǒng)的彎扭耦合振動。此外,轉(zhuǎn)子系統(tǒng)因可能包含多個齒輪嚙合單元,而各單元的齒輪形式不一,且因為各傳遞軸轉(zhuǎn)速和轉(zhuǎn)向也不盡相同,使得帶有齒輪嚙合的轉(zhuǎn)子系統(tǒng)的耦合振動問題變得更加復(fù)雜。 本文主要研究的是含齒輪壓縮機轉(zhuǎn)子系統(tǒng)的振動特性問題,即運用轉(zhuǎn)子動力學(xué)理論和有限元理論,分別研究了壓縮機子轉(zhuǎn)子系統(tǒng)、整機轉(zhuǎn)子系統(tǒng)在不同情況下的振動特性。本文的工作主要包括以下幾個方面： (1)介紹了轉(zhuǎn)子系統(tǒng)動力學(xué)的基本理論及本文所用到ANSYS相關(guān)單元,在對現(xiàn)有文獻整理總結(jié)的基礎(chǔ)上,推導(dǎo)了直齒輪及幾種斜齒輪嚙合剛度矩陣的具體表達形式。 (2)建立了齒輪增速機的動力學(xué)分析模型,考慮在不同嚙合剛度矩陣下系統(tǒng)固有特性的差別,并分析螺旋角及輪齒嚙合剛度的變化對齒輪轉(zhuǎn)子系統(tǒng)固有特性、穩(wěn)定性及振動響應(yīng)的影響。 (3)通過對技術(shù)圖紙的簡化,建立了H518齒輪壓縮機整機轉(zhuǎn)子系統(tǒng)的有限元分析模型。并分別對高壓端轉(zhuǎn)子系統(tǒng)、低壓端轉(zhuǎn)子系統(tǒng)及整機轉(zhuǎn)子系統(tǒng)的彎曲、扭轉(zhuǎn)及彎扭耦合振動分別進行分析,研究因齒輪的嚙合作用導(dǎo)致的系統(tǒng)固有特性的變化。 (4)對系統(tǒng)進行穩(wěn)定性分析,并根據(jù)API標(biāo)準(zhǔn)進行加載,進行不平衡響應(yīng)分析,得到系統(tǒng)在不同加載方式下的振動響應(yīng)情況。 (5)推導(dǎo)了轉(zhuǎn)子系統(tǒng)聯(lián)軸器偏角不對中及平行不對中故障的動力學(xué)模型,介紹了兩種不對中故障不對中力的計算方法,對不同程度不對中故障下轉(zhuǎn)子系統(tǒng)的振動響應(yīng)進行了仿真分析。 最后得出因齒輪的耦合作用,含齒輪嚙合的轉(zhuǎn)子系統(tǒng)與單軸分析相比,會產(chǎn)生新的頻率成分,振型也會發(fā)生變化。通過共振區(qū)、穩(wěn)定性及響應(yīng)分析確定H518壓縮機組的工作安全。具有不對中故障的轉(zhuǎn)子系統(tǒng)的振動頻譜中會出現(xiàn)工頻和二倍頻成分,不對中越嚴(yán)重,二倍頻所占比例越大；在不對中故障狀態(tài)下,轉(zhuǎn)子的軸心軌跡呈現(xiàn)香蕉形或內(nèi)外八字形。
[Abstract]:In the high speed rotor system with gear transmission , the meshing action of the gear should be fully taken into account in the dynamic analysis of the rotor system . The radial force and tangential force between gears can cause bending vibration and torsional vibration of the rotor system at the same time , that is , the torsional coupling vibration of the rotor system is caused . In addition , the rotor system can include a plurality of gear engaging units , and the gear forms of the units are different , and the coupling vibration problem of the rotor system with gear meshing becomes more complicated because the rotating speed and the steering of each transmission shaft are different . This paper mainly studies the vibration characteristics of the rotor system of the gear - containing compressor , that is , the rotor dynamics theory and the finite element theory are used to study the vibration characteristics of the rotor system of the compressor and the rotor system of the whole machine in different situations . The work of this paper mainly includes the following aspects : ( 1 ) The basic theory of the dynamics of the rotor system and the relevant unit of ANSYS are introduced . On the basis of summarizing the existing literatures , the concrete expressions of the meshing stiffness matrix of spur gears and several helical gears are derived . ( 2 ) The dynamic analysis model of gear speed increaser is established , considering the difference of the inherent characteristics of the system under different meshing stiffness matrix , and analyzing the influence of helix angle and gear meshing stiffness on the inherent characteristics , stability and vibration response of the gear rotor system . ( 3 ) Based on the simplification of the technical drawings , the finite element analysis model of the rotor system of H518 gear compressor is established . The bending , torsion and torsional coupling vibration of the high pressure end rotor system , the low pressure end rotor system and the whole machine rotor system are respectively analyzed , and the inherent characteristics of the system due to the meshing of gears are studied . ( 4 ) analyzing the stability of the system , loading the system according to the API standard , carrying out unbalance response analysis , and obtaining the vibration response of the system under different loading modes . ( 5 ) The dynamic model of the rotor system coupling deflection angle misalignment and the parallel misalignment is derived . The calculation method of the middle force is introduced , and the vibration response of the rotor system is simulated and analyzed in different degrees . It is concluded that the rotor system with gear meshing can produce new frequency component compared with single - axis analysis because of the coupling effect of gear . The working safety of H518 compressor unit can be determined by resonance region , stability and response analysis .

【學(xué)位授予單位】：東北大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2011
【分類號】：TH45

【參考文獻】

相關(guān)期刊論文 前10條

1 張新江,姚冰;轉(zhuǎn)子軸系不對中響應(yīng)計算方法研究[J];電站系統(tǒng)工程;1999年03期

2 高洪濤,李明;不對中對膜片聯(lián)軸器耦合轉(zhuǎn)子軸承系統(tǒng)固有特性的影響[J];化工機械;2005年01期

3 韓玉強,張鎖懷;結(jié)構(gòu)參數(shù)對轉(zhuǎn)子-軸承系統(tǒng)臨界轉(zhuǎn)速的影響[J];機械科學(xué)與技術(shù);2002年01期

4 宋雪萍;劉樹英;聞邦椿;;齒輪-轉(zhuǎn)子系統(tǒng)的振動特性分析[J];機械科學(xué)與技術(shù);2006年02期

5 李明,姜培林,虞烈;軸承-轉(zhuǎn)子-齒輪聯(lián)軸器系統(tǒng)的振動研究[J];機械工程學(xué)報;1998年03期

6 李小彭,姚紅良,李鶴,聞邦椿;齒輪耦合的故障轉(zhuǎn)子系統(tǒng)彎扭耦合振動特性研究[J];機械制造;2005年08期

7 徐禮勝,余光偉,王成龍;齒輪轉(zhuǎn)子系統(tǒng)耦合振動新頻率的有限元分析[J];中國制造業(yè)信息化;2003年03期

8 劉占生;趙廣;龍鑫;;轉(zhuǎn)子系統(tǒng)聯(lián)軸器不對中研究綜述[J];汽輪機技術(shù);2007年05期

9 王殿武,張敬偉;不對中故障的分析與診斷技巧[J];設(shè)備管理與維修;2005年10期

10 魏偉;轉(zhuǎn)子不對中故障機理與診斷[J];石油化工設(shè)備;1997年04期

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