10MW高温气冷实验堆蒸汽发生器传热管流体诱发振动分析

Analysis of Flow-Induced Vibration for Heat-Transfer Tube Bundles of 10 MW HTR Steam Genergator

10MW 高温气冷实验堆(HTR-10)蒸汽发生器传热管为小弯曲半径的组件式螺旋管结构,管外流动介质为氮气,具有结构上的特殊性。本文利用近期国内外流体诱发振动(FIV)的理论和试验研究成果,从 FIV 发生的主要机理——漩涡脱落、流体弹性稳定性和声振动出发,分析、计算和校核其设计可靠性。结果表明,HTR-10蒸汽发生器在 FIV 方面的设计是安全的。

The construction particularity of small-radius helical heat-transfer tube bundles which sub- ject to the flow of helium in 10MW HTR steam generator is considered,and recent research achievements on flow induced vibration(FIV)are used to analyze and verify the reliability of the design.The FIV analysis is mainly in three aspects:vertex shedding,fluidelastic vibration and acoustic resonance.The conclusion show that 10MW HTR steam generator is safe in FIV.