两种支承形式推力轴承热变形的对比分析

Contrastive Analysis on Thermal Deformation of Thrust Bearing Pad with Two Kind of Supporting Form

为求解热变形,针对相同瓦面、两种不同支承形式可倾瓦推力轴承进行了热变形的有限元数值模拟,并进行了对比分析。结果表明:两种不同支承(点、线支承)形式推力轴承,在同工况下其瓦体温度场、变形场相似,数值相近;当pv值增加时,瓦体温度和变形均有所增加,针对算例工况,pv值每增加10%,温度场升高1℃左右,热挠变形增加0.002 mm。

In order to solve thermal deformation, the finite element numerical simulation of two kind of tilting pad thrustbearing is carried for the same pad surface, and comparative analysis of their thermal deformation is conducted. The resultsshow that the temperature field, the deformation field and the values of pad are similar for two different supported thrustbearing （point, line support）under the same operating condition. The pad temperature and deformation will increase withthe increase of pv values. According to the calculation conditions, the temperature field risse about1 ℃, and the thermaldeflection increases 0.002 mm when pv value increases by 10%.