工艺参数波动对预应力换热器安全性的影响  

Effect of Process Parameters Fluctuation on Safety of Pre-stressed Heat Exchanger

作　　者：郭崇志[1] 周祥[1] 黄巍[1] 

机构地区：[1]华南理工大学,广东广州510640

出　　处：《压力容器》2015年第1期9-17,24,共10页Pressure Vessel Technology

摘　　要：采用"分段建模,整体综合"的模拟方法对壳程E流路和管程流体建模,使得分析模型更加符合实际。进一步考虑了管壳程工艺参数波动条件下,折流杆预应力换热器在仅受预变形、仅受操作温度以及预变形和温度共同作用3种加载工况下的管子与管板接头应力变化规律,并在整理大量数据的基础上给出了预应力换热器的安全操作区间,对于指导预应力换热器设计和应用具有较大的现实意义。此外,通过预应力换热器的试验研究,验证了模拟结果的可靠性。The numerical simulation method named “Simulation in subsections,integration of the whole”were used to model shell E flow path and the tube side fluid,which makes the analysis of the model is consistent with the actual model.Process parameters fluctuation of tube side and shell side were further considered.The analysis of the rod baffle heat exchanger′s stress variation is under three kinds of working condition.They are affected by the pre-deformation load,the temperature load and the pre-deformation load and temperature load combination.Safe working range of pre-stressed heat exchanger is given on the basis of processing large amounts of data.It guides the design and application of pre-stressed heat ex-changer has great practical significance.In addition,the experimental research on a certain condition of pre-stressed heat exchanger,proves the reliability of the simulation.

关 键 词：工艺参数 折流杆换热器 预应力 安全区间 

分 类 号：TH123[机械工程—机械设计及理论] TQ051.5[化学工程]