摘要
当今我国对能源的需求不断提升,石油作为用途最为广泛的不可再生能源,为我国的能源产业奠定了基础。为了节省储存空间和成本,通常会将石油产品储存在大型储油罐中,由于各种石油类产品的易燃易爆性和有毒性,大型储油罐具有很大的安全隐患。我们所研究的储油罐属于一个流固耦合系统,目前对流固耦合系统进行模态分析主要使用声固耦合法和虚拟质量法,为了提高大型储油罐的安全性,文章利用Workbench中的模态声学模块对某大型浮顶储油罐在不同充液率的情况下进行了基于声固耦合法的湿模态分析,将大型储油罐内部储存的油体视为可压缩的声学介质,模拟储油罐内部在储存油体时的真实状态。最后求解出了几种不同充液状态下储油罐的固有频率和振型并给出了不同充液率情况下罐内液体晃动频率,对数据加以分析,结果表明:液体也是大型储油罐要考虑的约束条件之一,并且大型浮顶储油罐的自振特性以及罐内液体晃动频率对内部充液率的变化敏感。
Nowadays,China's demand for energy is constantly increasing.As the most widely used non-renewable energy,petroleum has laid a foundation for China's energy industry.In order to save storage space and cost,petroleum products are usually stored in large storage tanks.Because of the inflammable and explosive properties and toxicity of various petroleum products,large storage tanks have great potential safety hazards.We studied the oil tank belongs to a fluid-structure interaction system,the convection fluid-solid coupling system for modal analysis is mainly using solid coupling method and the virtual mass method,we studied the oil tank belongs to a fluid-structure interaction system,the convection fluid-solid coupling system for modal analysis is mainly to use solid coupling method and virtual quality standard,In order to improve the safety of a large floating roof tank,a wet modal analysis based on the sound-solid coupling method is carried out by Modal acoustics module in Workbench under different filling rates of a large floating roof tank.The oil body stored in a large oil storage tank is regarded as a compressible acoustic medium to simulate the real state of the oil body stored in the tank.Finally got several different liquid storage tanks under the natural frequency and vibration mode and presents the different charging rates tank of liquid sloshing frequency,analyzing data,the results showed that the liquid is one of the large storage tanks to consider the constraint conditions,and the natural vibration characteristics of large floating roof oil tank and tank of liquid sloshing frequency is sensitive to changes in the rate of internal liquid.
作者
张津铭
党鹏飞
ZHANG Jin-ming;DANG Peng-fei(School of Mechanical and Power Engineering,Shenyang University of Chemical Technology,Shenyang 110142,China)
出处
《山东工业技术》
2023年第2期14-18,共5页
Journal of Shandong Industrial Technology
基金
国家自然科学基金(12002219)。
