基于ABAQUS的LPG充装设备密封系统设计
王志辉
(多立恒(北京)能源技术股份公司,北京 100124)
摘要:液化石油气(LPG)充装设备中,充气总成是核心部件之一,该部件的密封设计对LPG充装的安全性和可靠性至关重要。基于ABAQUS有限元非线性分析方法,构建了充气总成中密封件的力学模型,分析了不同工况下密封件的Mises应力及其对密封性能的影响。研究结果表明,优选出的密封垫设计方案具有最大Mises应力低于许用应力、最大接触压力大于介质压力的特点,满足密封要求。并且由于径向力影响,O型密封圈发生非对称性形变,在最大变形和最小变形侧,Mises应力和最大接触压力均处于合理范围。同时,对承力杆件在密封工况下的压杆稳定性进行了校核,结果符合设计要求。
关键词:LPG;密封;非线性分析;Mises应力;接触压力
中图分类号:TQ336.42 文献标志码:A doi:10.3969/j.issn.1006-0316.2022.12.012
文章编号:1006-0316 (2022) 12-0073-08
Design of Sealing System for LPG Filling Equipment Based on ABAQUS
WANG Zhihui
( Polygon (Beijing) Energy Technology Corp., Beijing 100124, China )
Abstract:Inflation assembly is a core component of LPG filling equipment. The seal design of this component is very important to the safety and reliability of LPG filling. Based on ABAQUS finite element nonlinear analysis method, the mechanical model of the seal in the inflatable assembly is constructed. The changes of Mises stress of the seal under different working conditions and their effects on the sealing performance are analyzed. The research results show that, in the optimized gasket design scheme, the maximum Mises stress is lower than the allowable stress, while the maximum contact pressure is greater than the medium pressure. The design scheme meets the sealing requirements. Moreover, due to the influence of radial force, the O-ring has asymmetric deformation. On each side of maximum deformation and minimum deformation, the Mises stress and the maximum contact pressure are kept in a reasonable range. The stability of the pressure bar under the sealing condition is checked, and the results meet the design requirements.
Key words:LPG;sealing;nonlinear analysis;Mises stress;contact pressure
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收稿日期:2022-02-17
作者简介:王志辉(1973-),男,北京人,硕士,工程师,主要研究方向为阀门及相关产品开发、结构仿真和热设计,E-mail:715604563@qq.com。
 

 

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