基于ANSYS12.0的面式减温器筒体裂纹产生机理研究  

Study of Formation Mechanism for Cylinder Body Crack of Surface Type Attemperators Based on ANSYS12.0

作　　者：钦峰 郑玉卿[2] 徐连荣 钟丰平 

机构地区：[1]湖州市特种设备检测中心,浙江湖州313000 [2]湖州师范学院信息与工程学院,浙江湖州313000 [3]浙江省特种设备检验研究院,浙江杭州310020

出　　处：《石油化工设备》2014年第1期27-31,共5页Petro-Chemical Equipment

基　　金：湖州市自然科学基金项目(No.2011YZ12)

摘　　要：针对电站锅炉面式减温器的蒸汽引出管附近裂纹,基于ANSYS12.0对该处结构进行了热-固耦合数值模拟,分析了不同冷凝水温度对其筒体内壁应力的影响,详细论述了内壁裂纹的产生机理,推断低温冷凝水是导致疲劳裂纹产生的最主要诱导因素,预测了低温冷凝水滴的温度范围,对预防此类事故的发生提出了建议。Thermo-structural coupling numerical simulation was carried out in the steam nozzle of surface type attemperators based on ANSYS12.0. Influences on inner wall stress of attempera- tots cylinder were analyzed by the effect of different temperature condensate water and formation mechanism of cylinder body crack was expounded. Therefore, it can be inferred that low temper- ature condensate water was the major inducing factor which caused the fatigue crack. Tempera- ture range of condensate water was calculated and some advices of precautions were put forward, as well.

关 键 词：简体 面式减温器 热固耦合 裂纹 间断滴水 温度 

分 类 号：TQ050.7[化学工程] TB115.1[理学—数学]