先进制造业知识服务平台
国家科技图书文献中心机械分馆　　工信部产业技术基础公共服务平台　　国家中小企业公共服务示范平台

Fluid-structure coupling analysis of a pressure vessel-pipe-safety valve system with experimental and numerical methods
参考中译:压力容器-管道-安全阀系统流固耦合的实验和数值分析


          

刊名：International Journal of Pressure Vessels and Piping
作者：Chaoyong Zong（School of Mechanical Engineering, Dalian University of Technology）
Qingye Li（School of Mechanical Engineering, Dalian University of Technology）
Fengjie Zheng（School of Mechanical Engineering, Dalian University of Technology）
Dianjing Chen（National Engineering Research Center for Special Pump and Valve）
Xiaofeng Li（National Engineering Research Center for Special Pump and Valve）
Xueguan Song（School of Mechanical Engineering, Dalian University of Technology）
刊号：712C0008
ISSN：0308-0161
出版年：2022
年卷期：2022, vol.199
页码：104707-1--104707-15
总页数：15
分类号：TK2
关键词：Pressure vessel-pipe-safety valve；Fluid-structure coupling；Dynamic instability；CFD
参考中译：压力容器-管道-安全阀；流固耦合；动力不稳定性；CFD
语种：eng
文摘：Pressure vessel-pipe-safety valve (PVPSV) is a commonly used combination in the industrial pressure systems. For the design optimization purpose, an in-depth investigation on the working mechanism of such a combination is essential. To this end, experimental and numerical analysis were performed in this paper. For measuring, an experimental test rig is specially designed and built, thereby dynamic tests were performed. The results indicate that the set-pressure of the safety valve and the valve spring stiffness have significant influence on the dynamics of the PVPSV. Upon certain operating conditions, the safety valve responds in unstable manners, e.g., flutter or chatter. To compensate the tests, a high-fidelity 2-D axis-symmetric system-level Computational Fluid Dynamics (CFD) model is used. The simulation results show that both the damping coefficient and the connecting pipe length have great influence on the dynamics of the PVPSV system. A PVPSV system with a small damping coefficient and/or a long connecting pipe is more likely to exhibit dynamic instability. Finally, combining the results of experiments and numerical simulations, a large enough net disc force coupled with insufficient kinetic energy loss of valve moving parts are considered to be the root cause of unstable operations of the PVPSV system.
参考中译：压力容器-管道-安全阀(PVPSV)是工业压力系统中常用的组合。为了达到设计优化的目的，对这种组合的工作机理进行深入的研究是非常必要的。为此，本文进行了实验和数值分析。为了测量，专门设计和建造了实验试验台，从而进行了动态测试。结果表明，安全阀的设定压力和阀门的弹簧刚度对PVPSV的动态特性有显著的影响。在某些运行条件下，安全阀以不稳定的方式响应，例如颤动或颤动。为了补偿这些测试，使用了高保真的二维轴对称系统级计算流体动力学(CFD)模型。仿真结果表明，阻尼系数和连接管长度对PVPSV系统的动态特性都有很大影响。具有较小阻尼系数和/或较长连接管道的PVPSV系统更容易表现出动态不稳定性。最后，结合实验和数值模拟的结果，认为足够大的盘净作用力和阀门运动部件动能损失不足是PVPSV系统不稳定运行的根本原因。



国家科技图书文献中心  全球文献资源网  京ICP备05055788号-26  机械工业信息研究院 2018-2024