本文選題：滑動軸承 + 袋式軸承��； 參考：《汽輪機(jī)技術(shù)》2016年02期

【摘要】：利用CFD軟件分析不同油膜厚度、轉(zhuǎn)速、供油壓力下袋式軸承的油膜特性。首先將UG軟件建立的物理模型導(dǎo)入Workbench的Mesh軟件中進(jìn)行網(wǎng)格劃分,再計算不同的油膜厚度、轉(zhuǎn)速、供油壓力下的袋式軸承的油膜壓力分布;由于Workbench的Flunet里沒有黏溫方程的計算模型,則需要用Flunet里的udf自定義編程接口將編寫的C++程序?qū)朐撥浖挠嬎闫髦?求解袋式軸承在不同轉(zhuǎn)速、油膜厚度和供油壓力下油膜溫度分布。結(jié)果表明:通過對袋式軸承的數(shù)值模擬可以看出,最佳的油膜厚度、轉(zhuǎn)速、供油壓力對袋式軸承的油膜特性及對旋轉(zhuǎn)機(jī)械轉(zhuǎn)子穩(wěn)定性起著非常重要的作用。汽輪機(jī)啟動運(yùn)行時,在合理的轉(zhuǎn)速范圍內(nèi),轉(zhuǎn)速越大,溫升降低,油膜穩(wěn)定性越好,汽輪機(jī)轉(zhuǎn)子運(yùn)行就越加穩(wěn)定;最佳的油膜厚度和供油壓力使袋式軸承油膜壓力穩(wěn)定,溫升小,使承載能力提高,且保證汽輪機(jī)安全穩(wěn)定運(yùn)行。
[Abstract]:The oil film characteristics of bag bearings under different oil film thickness, rotation speed and oil supply pressure were analyzed by CFD software.Firstly, the physical model established by UG software is imported into Mesh software of Workbench for grid division, and then the oil film pressure distribution of bag bearing under different oil film thickness, rotational speed and oil supply pressure is calculated.Because there is no calculation model of viscosity temperature equation in Flunet of Workbench, it is necessary to import the C program into the calculator of the software with udf custom programming interface in Flunet, and to solve the bag bearing at different rotational speeds.Oil film temperature distribution under oil film thickness and oil supply pressure.The results show that the optimum oil film thickness, rotation speed and oil supply pressure play an important role in the oil film characteristics of the bag bearing and the rotor stability of the rotating machinery through the numerical simulation of the bag bearing.When the turbine starts running, the greater the speed, the lower the temperature rise, the better the oil film stability, the more stable the turbine rotor is, and the better the oil film thickness and the oil supply pressure are, the more stable the oil film pressure of the bag bearing is.Small temperature rise, improve the bearing capacity, and ensure the safe and stable operation of steam turbines.
【作者單位】： 東北電力大學(xué)能源與動力工程學(xué)院;大亞灣核電運(yùn)營管理有限責(zé)任公司;
【分類號】：TH133.3
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本文編號：1759433