【摘要】：液體動壓徑向滑動軸承是軸承中的一個重要類別,在旋轉(zhuǎn)機械領(lǐng)域應(yīng)用廣泛�；瑒虞S承是旋轉(zhuǎn)機械的重要部件,其動特性對轉(zhuǎn)子的動力性能有很大的影響,直接關(guān)系到設(shè)備的安全穩(wěn)定運行。企業(yè)在計算轉(zhuǎn)子動力性能時需要知道滑動軸承的動特性數(shù)值,而滑動軸承的動特性又與諸多因素有關(guān),因此計算及分析滑動軸承的動特性,并確定有關(guān)影響因素有非常重要的實際意義。本文以多油楔液體動壓徑向滑動軸承為研究對象,以雷諾方程、能量方程、粘溫關(guān)系的建立和數(shù)值求解為理論基礎(chǔ),利用計算機這一工具建立模型計算滑動軸承的動特性系數(shù),及轉(zhuǎn)子的動力性能,分析各有關(guān)影響因素對滑動軸承及轉(zhuǎn)子動力性能的影響。本文主要工作如下： (1)根據(jù)相應(yīng)理論模型編制出適用于計算多油楔滑動軸承動特性系數(shù)的計算機程序,可與計算轉(zhuǎn)子不平衡響應(yīng)的程序相結(jié)合,形成一套完整的計算轉(zhuǎn)子動力性能的程序,進行轉(zhuǎn)子動力性能計算 (2)計算了進油壓力、進油溫度、寬徑比、油葉布置方式等因素變化時,滑動軸承對應(yīng)偏心率下的動特性系數(shù),并分析了這些因素對滑動軸承動特性的影響規(guī)律。 (3)針對工程應(yīng)用中的具體轉(zhuǎn)子,計算了上述因素變化時,在相應(yīng)的滑動軸承動特性系數(shù)下,轉(zhuǎn)子系統(tǒng)的不平衡響應(yīng),并分析了上述因素對轉(zhuǎn)子系統(tǒng)動力性能的影響規(guī)律。 本文計算所用的數(shù)據(jù)大部分來自工程實際,計算結(jié)果和所得結(jié)論可為工程應(yīng)用提供一定參考。
[Abstract]:Hydrodynamic radial sliding bearing is an important type of bearing, which is widely used in the field of rotating machinery. Sliding bearing is an important part of rotating machinery. Its dynamic characteristics have a great influence on the dynamic performance of the rotor, which is directly related to the safe and stable operation of the equipment. Enterprises need to know the dynamic characteristics of sliding bearings when calculating rotor dynamic performance, and the dynamic characteristics of sliding bearings are related to many factors, so the dynamic characteristics of sliding bearings are calculated and analyzed. It is of great practical significance to determine the influencing factors. In this paper, the fluid hydrodynamic radial sliding bearing with multiple oil wedges is taken as the research object, the Reynolds equation, the energy equation, the establishment of the visco-temperature relation and the numerical solution are taken as the theoretical basis, and the dynamic characteristic coefficient of the sliding bearing is calculated by using the computer model. The influence factors on the dynamic performance of sliding bearing and rotor are analyzed. The main work of this paper is as follows: (1) based on the corresponding theoretical model, a computer program for calculating the dynamic characteristic coefficients of multi-wedge sliding bearings is developed, which can be combined with a program to calculate the unbalanced response of the rotor. Forming a complete program to calculate the dynamic performance of the rotor. (2) when calculating the oil intake pressure, the oil inlet temperature, the ratio of width to diameter, the arrangement of the oil blade, and so on, The influence of these factors on the dynamic characteristics of sliding bearings is analyzed. (3) in view of the specific rotor in engineering application, the variation of the above factors is calculated. The unbalance response of the rotor system under the corresponding dynamic characteristic coefficient of the sliding bearing is analyzed, and the influence of the above factors on the dynamic performance of the rotor system is analyzed. Most of the data used in this paper come from engineering practice, and the results and conclusions can provide some reference for engineering application.
【學(xué)位授予單位】：浙江工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2012
【分類號】：TH133.31

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本文編號：2279488