本文選題：變螺距 + 螺桿真空泵��； 參考：《真空科學(xué)與技術(shù)學(xué)報》2017年08期

【摘要】：以變螺距螺桿真空泵轉(zhuǎn)子為研究對象,建立主動轉(zhuǎn)子的三維有限元分析模型,對轉(zhuǎn)子在熱載荷作用下的溫度場和熱變形進(jìn)行有限元分析。計算得到每一級的當(dāng)量溫度和對流換熱系數(shù),確定變螺距轉(zhuǎn)子熱邊界條件,對螺桿轉(zhuǎn)子的溫度場分布進(jìn)行模擬分析,得出轉(zhuǎn)子的溫度分布規(guī)律,并進(jìn)一步對轉(zhuǎn)子的熱變形進(jìn)行研究。研究結(jié)果表明:變螺距轉(zhuǎn)子溫度場和熱變形分布均勻,最高溫度為146.97℃,最低溫度為68.30℃,軸向形變量最大值為0.41168 mm,徑向形變量最大值為0.17245mm,為變螺距螺桿真空泵的設(shè)計提供了理論依據(jù)。
[Abstract]:Taking the rotor of variable pitch screw vacuum pump as the research object, a three-dimensional finite element analysis model of the active rotor is established, and the temperature field and thermal deformation of the rotor under thermal load are analyzed by finite element method. The equivalent temperature and convection heat transfer coefficient of each stage are calculated, and the thermal boundary conditions of the rotor with variable pitch are determined. The temperature field distribution of the screw rotor is simulated and analyzed, and the temperature distribution law of the rotor is obtained. Furthermore, the thermal deformation of the rotor is studied. The results show that the temperature field and thermal deformation of the rotor with variable pitch are uniform, the highest temperature is 146.97 鈩，

本文編號：1928268