摘要
针对承压气密闸门双道燕尾槽密封结构,采用ANSYS Workbench对该结构中O形密封圈的VonMises应力和最大接触压力与压缩率的关系进行了研究。基于预紧状态和工作状态,对橡胶条在压缩率为3%、5%、8%、10%、13%、16%、18%和21%等工况下的受力情况进行了有限元分析。结果表明:预紧状态下,压缩率越大,橡胶圈内部应力越大,可能发生失效的区域也越大,压缩率过大则会导致密封圈从内部发生破坏而失效;工作状态下,当压缩率η>13%时,可避免密封圈被挤入上法兰面、下法兰面的间隙而造成密封失效。各接触面的接触压力均满足密封要求,是较为理想的压缩率设计值。
Aiming at the double-channel dovetail seal structure of the air-tight gate,the relationship between the Von Mises stress,the maximum contact pressure and the compression ratio of the O-shaped seal in the structure is studied by using ANSYS Workbench.Based on the pre-tightened state and working state,a finite element analysis is performed on rubber strip under the compression ratio of 3%,5%,8%,10%,13%,16%,18%,and 21%.In the pre-stressed state,the greater the compression rate,the greater the internal stress of the rubber ring,and the larger the area where failure may occur.If the compression rate is too large,the seal will be damaged from the inside and fail.In the working state,when the compression ratioηis>13%,the sealing ring can be prevented from being squeezed into the gap between the upper flange face and the lower flange face,resulting in the sealing failure.The contact pressure of each contact surface satisfies the sealing requirements,which is a relatively ideal design value for the compression ratio.
作者
方成
黄浩
吴永锡
FANG Cheng;HUANG Hao;WU Yongxi(Wuxi Delin Marine Equipment Co.,Ltd.,Jiangsu Wuxi 214191,China)
出处
《船舶工程》
CSCD
北大核心
2020年第5期73-78,117,共7页
Ship Engineering
关键词
O形密封
双道
燕尾槽
有限元分析
O-shaped seal
double channel
dovetail groove
finite element analysis
