摘要
为研究大口径金属硬密封球阀的密封面性能,建立了球阀的主密封结构有限元模型,分析其在常温高压、高温高压下的应力变化及间隙变化。以阀芯弹性模量、阀芯半径、密封面轴向投影为优化变量,最终得到各参数对泄漏的影响。结果表明:在一定范围内,增大阀芯半径以及减小密封面轴向宽度,能减少泄漏,为大口径球阀的设计提供了参考。
To study the sealing surface performance of large-diameter metal hard seal ball valves,a finite element model of the main sealing structure of the ball valve is established to analyze the stress changes and gap changes under normal temperature and high pressure,high temperature and high pressure.The spool modulus of elasticity,spool radius and axial projection of the sealing surface are set as optimization variables to obtain their effect on leakage.The results show that increasing the spool radius and reducing the axial width of the sealing surface can reduce the leakage within a certain range,which provides a reference for the design of large diameter ball valves.
作者
杨国来
孟德虎
叶建中
甘文军
刘岱阳
YANG Guo-lai;MENG De-hu;YE Jian-zhong;GAN Wen-jun;LIU Dai-yang(College of Energy and Power Engineering,Lanzhou University of Technology,Lanzhou,Gansu 730050;Zhejiang Chaoda Valve Company Limited,Wenzhou,Zhejiang 325000)
出处
《液压与气动》
北大核心
2023年第3期146-152,共7页
Chinese Hydraulics & Pneumatics
关键词
大口径金属硬密封球阀
泄漏
有限元
间隙
热固耦合
large-diameter metal hard seal ball valve
leakage
finite element
clearance
thermoset coupling
