外来物对蒸汽发生器传热管微动磨损的分析研究

Analytical Investigation on Steam Generator Tube Fretting Due to Foreign Object

以蒸汽发生器传热管固定不动为前提,研究管板表面外来物由于流体绕流引起的振动或运动造成的传热管微动磨损。分析过程中选取一种典型的外来物形状和位置作为分析对象,以Archard计算模型为基础,借助瞬态动力学分析方法,对外来物造成传热管的微动磨损进行了分析研究。结果表明,质量不大且一端固定的外来物在周期性的脉动载荷下对传热管完整性不会产生显著影响。

The research investigated on tube fretting due to the outflow and vibration based on hypothesis that the tube can＇t move to other places.Typical form and layout are considered as analytical objects.In addition,tube fretting due to foreign object is investigated using transient dynamics method according to Archard calculation model.The result shows that lower mass foreign object and foreign object with one end stationary have not remarkably affected on tube integrity under periodic fluctuating load.