摘要
新疆某石化公司的10-K-302C离心式甲烷制冷压缩机自开机以来,其润滑油管线振动位移一直较大,运用Workbench有限元软件对空管系统进行模态分析,获得管道的固有频率和振型;采用双向流-固耦合的数值模拟方法,分析对比了润滑油在耦合时的压力、速度变化及管道耦合前后的振动频率、位移变化规律;通过将数值模拟振动分析结果与实际管路实测振动结果对比,肯定了数值模拟分析的准确性,得出了共振和管内流体速度在管道弯头处突变而造成瞬间激振力过大是管道振动主要原因的基本结论;依据上述结论,对管路系统进行了减振控制,设计后的数值模拟分析表明,管系振动大幅减少,满足工业化生产要求。
Vibration of pipe is the most frequently fault appeared in chemical engineering industry. In the paper, in order to resolve the problem of vibration in exceed of the set standard for the lubricating oil pipe of 10-K-302C compressor of DuShanzi petro-chemical company, the three-dimensional model of the pipe were established by using ANSYS Workbench, and the natural frequency and mode vibration of the pipe were obtained. Through ANSYS bidirectional coupled fluid-structure analyzing method, the variety of the pressure and velocity of the lubricating oil in the pipe, vibration frequency and the displacement of the pipe under working condition were carried out. By contrasting the analysis result between the numerical simulation and measured actually, the validity and accuracy of the numerical simulation have been affirmed and it has been found that the resonance and the large fluid pressure fluctuation were two main reasons caused the pipe vibration. Based on the conclusions above, two ways to reduce the vibration have put forward and the best way have determined.
出处
《广东化工》
CAS
2014年第8期123-124,118,共3页
Guangdong Chemical Industry
基金
国家大学生创新创业实训项目(201310755006)资助
