高压管线固定球阀矩形密封圈有限元分析  

Rectangular-ring finite element analysis of high-pressure pipeline fixed ball valve

作　　者：张浩强[1] 汤忠义[1] 温够萍[1] 

机构地区：[1]湖南电气职业技术学院机械工程系,湖南湘潭411101

出　　处：《机械》2011年第7期26-30,共5页Machinery

摘　　要：利用ANSYS建立了公称通径1500 mm,公称压力15 MPa的高压管线固定球阀阀座和球体连接处矩形聚四氟乙烯密封圈的二维轴对称模型。在矩形密封圈二维轴对称模型右上线8施加设计比压15.74 MPa,分析了矩形圈长度与最大接触压力和位移和的关系。结果表明随长度的增加,最大接触压逐渐增大,但变化不大;变形后的位移和随长度增加而增加,且变化较大;可能出现裂纹的位置在施加压力端近似半椭圆的区域内;矩形密封圈接触压力均匀、密封面大、密封效果好。Establing the Polytetrafluoroethene Rectangular-sealing Ring＇s two-dimensional axisymmetric model of the joint of valve seat and sphere of High-Pressure Pipeline Fixed Ball valve.whose nominal pressure is 15MPa, nominal pressure is 15 MPa. Applying design pressure 15.74 MPa on the upper right line 8 of the two-dimensional axisymmetric model,the length of the rectangular ring with maximum contact pressure and displacement are analysied,The result shows that the increase of the length ,the maximum contact pressure gradually increased,but with littlt change.With the increase of the length,the displacement of deformation increseds,and the change is relatively large.Cracks are possible in the semi-elliptical area where pressure is applied. Rectangular ring has uniform contact pressure,large sealing surface,good sealing effect.

关 键 词：矩形密封圈 有限元分析 接触压力 

分 类 号：O242.21[理学—计算数学]