渣罐的热强度分析及结构改进  

Structural improvement and thermal fatigue analysis of slag-pot

作　　者：马学东[1] 孙德标[1] 邢卫平 

机构地区：[1]辽宁科技大学机械工程与自动化学院,辽宁鞍山114044 [2]秦冶重工设计研究院,河北秦皇岛066004

出　　处：《机械设计》2015年第4期101-104,共4页Journal of Machine Design

基　　金：辽宁省教育厅自然科学基金资助项目(000435)

摘　　要：为了延长某型号渣罐的使用寿命,用ANSYS软件对该渣罐进行热应力分析,分析结果表明：该渣罐的多处热应力均超过屈服极限,其破坏形式属于低周疲劳破坏。运用板壳强度理论对该渣罐进行了结构改进,并对改进后的渣罐进行了热应力及热疲劳的校验。校验结果表明：改进后渣罐的热应力下降了2~5倍,使用次数可由120次增加到813次。且改进后的渣罐已成功应用于工程实际。ANSYS was used to analyze the thermal stress of the slag-pot in order to extend its life. The results show that the thermal stress in several parts of the slag-pot is beyond the yield limit, and the destruction is a low-cycle fatigue damage.So, the structure of the slag-pot was improved by strength theory of plate and shell, thermal stress and thermal fatigue of the improved slag-pot were tested. The test results show that the thermal stress of improved slag-pot decreases by 2 ~5 times and the usage amount increases from 120 times to 813 times. The slag-pot is now applied to the actual engineering.

关 键 词：渣罐 热强度 结构改进 热疲劳 

分 类 号：TH122[机械工程—机械设计及理论]