摘要
针对海上油气田常用的井下安全阀,通过有限元分析的方法对启闭阀板的流体动力学和应力应变进行了模拟分析。通过分析,得出了安全阀启闭系统结构两侧压差随开启角度的增大,两侧压差呈减小趋势,阀板的开启角度对流体速度和湍流强度的影响,得出了阀板在开启过程中最大应力出现在销轴连接处与阀板连接的过渡圆弧处,且随着阀板开启角度增大,阀板应力最大值逐渐减小。文章从理论上,为安全阀启闭系统的结构设计提供了技术参考,确保了安全阀启闭系统的可靠性。
SSSV is often used offshore. The fluid mechanics and stress strain of flapper lock-open was simulated and analyzed by finite element method. It was found that the pressure difference on both sides of the SSSV flapper would decrease with the increase of opening angle. And the influence of opening angle of flapper on fluid velocity and turbulence intensity was studied, the results indicated that during the flapper opening process,the maximum stress appeared at the transition arc between the pin shaft and the valve plate,and the maximum stress would decrease with the increase of the flapper opening angle.This will provide a technical reference for the structural design of SSSV,and will ensure the reliability of SSSV lock-open system.
出处
《钻采工艺》
CAS
北大核心
2017年第1期61-64,共4页
Drilling & Production Technology
基金
中海油田服务股份有限公司科研攻关项目"海上顶部完井关键工具研究"部分成果(E-23147008)
