旋风分离器流固耦合分析与裂纹产生机理探究
Fluid-structure Interaction Analysis and Crack Generation Mechanism Exploration of Cyclone Separator
李玉坤 1王鄯尧 2王东营 3沈珂 3张楠楠 3何正迎 4曹小建1
作者信息
- 1. 中国石油大学(华东)储运与建筑工程学院
- 2. 浙江运达风电股份有限公司风力发电系统国家重点实验室
- 3. 中国石油天然气集团有限公司北京天然气管道有限公司
- 4. 同济大学土木工程学院
- 折叠
摘要
高压旋风分离器是压气站天然气出站前的重要净化分离设备,其入口压力高,波动大,内部动力学响应复杂.目前,国内运行中的分离器壳体入口区域多出现微裂纹.为探究旋风分离器内部流场分布情况,研究分离器壳体的动态响应,准确认识分离器入口区域裂纹产生机理,基于有限元法分别计算了稳定和非稳定压力入口边界条件下分离器内部流场分布规律,将流场压力结果通过流固耦合面传递至分离器壳体作为固体域的载荷边界条件,计算分离器壳体的应力和变形.再制作标准试件,以分离器入口区域的应力值作为载荷条件,进行了拉伸和疲劳试验,探寻其入口区域微裂纹产生机理.该研究可为旋风分离器的裂纹预防和工程维护提供理论指导.
Abstract
High-pressure cyclone separator is an important purification and separation equipment for natural gas in compressor station before leaving the station.Its inlet pressure is high,fluctuates greatly,and its internal dynamic response is complex.At present,microcracks often appear in the inlet area of some separator shells in domestic operation.In order to explore the distribution of the flow field inside the cyclone,study the dynamic response of the separator shell,and accurately understand the mecha-nism of cracks in the inlet area of the cyclone separator,based on the finite element method,the inter-nal flow field distribution law of the cyclone separator under stable and unstable pressure inlet boundary conditions is calculated respectively.The pressure results of the flow field are transmitted to the separator shell through the fluid-solid coupling surface as the load boundary condition of the solid domain,and the stress and deformation of the separator shell are calculated.Then,the standard specimen is made,tensile and fatigue tests are carried out with the stress value in the inlet area of the separator as the load condition to explore the mechanism of microcracks in the inlet area.This study can provide some theo-retical guidance for crack prevention and engineering maintenance of cyclone separators.
关键词
旋风分离器/流固耦合/波动压力/疲劳试验Key words
cyclone separator/fluid-structure interaction/fluctuating pressure/fatigue test引用本文复制引用
出版年
2024
NETL
NSTL
万方数据