摘要
为研究旋风分离器内置导流叶片各个结构参数之间的相互作用,基于CFD数值模拟方法和BBD试验设计,采用二阶多项式基函数建立了Stairmand旋风分离器的叶片轴向位置、叶片长度及叶片偏转角度与分离效率及压降间的数学模型。拟合结果表明:响应目标的决定系数均在0.99以上,表明相关性和回归模型效果较好。使用Design Expert软件处理数据后选择了最佳推荐点,对分离器结构进行了优化。优化后的模型与原结构对比结果如下:优化模型的压降略有上升;颗粒直径在1~20μm范围内时,优化前后分离器的分离效率变化明显,尤其在1~15μm范围内时,优化前分离效率为6.8%~31.0%,优化后则达到了17.0%~54.0%,提升约20个百分点;而当粒径在15~40μm区间时,优化前后的分离效率变化不明显,尤其是在粒径20~40μm时,优化前的分离效率为71.0%~98.0%,而优化后的分离效率只有77%~99%,提升约10个百分点;优化后的模型性能符合“高效低阻”的设计目标。所得结论可为旋风分离器内置叶片的改进提供设计指导。
In order to study the interaction among structural parameters of the guide vanes built in cyclone separator,based on CFD numerical simulation method and BBD test design,a second-order polynomial basis function was used to build a mathematical model for the relationships among the axial position,length and deflection angle of the blade,the separation efficiency and the pressure drop of the Stairmand cyclone separator.The fitting results show that the determination coefficients of the response target are all above 0.99,indicating a good effect of correlation and regression model.Moreover,after having processed the data using Design Expert software,the best recommendation point was selected to conduct optimization on the structure of the separator.The comparison between the optimized model and the original structure reveals that the pressure drop of the optimized model slightly increases.When the particle diameter is within the range of 1-20μm,there is a significant change in the separation efficiency of the separator before and after optimization,especially within the range of 1-15μm,the separation efficiency is 6.8%-31.0% before optimization,and reaches 17.0%-54.0% after optimization,an improvement of about 20 percentage points.When the particle diameter is within the range of 15-40μm,there is no significant change in separation efficiency before and after optimization,especially within the range of 20-40μm,the separation efficiency is 71.0%-98.0% before optimization,and reaches 77%-99%after optimization,an improvement of about 10 percentage points.The performance of the optimized model conforms to the design goal of“high efficiency and low resistance”.The study conclusions provide design guidance for the improvement of the guide vanes built in the cyclone separator.
作者
曾云
陈宓
魏轲
李美求
李银银
李伟伟
董吉宁
Zeng Yun;Chen Mi;Wei Ke;Li Meiqiu;Li Yinyin;Li Weiwei;Dong Jining(School of Mechanical Engineering,Yangtze University;Shandong Natural Gas Pipeline Co.,Ltd.;Shandong Weiyuan Technology Co.,Ltd.)
出处
《石油机械》
北大核心
2024年第8期92-100,共9页
China Petroleum Machinery
基金
国家重点研发计划项目“3000 m级深海油气钻探关键技术与装备研究”之“超深水特殊钻井配套工具装备应用及海试”(2022YFC2806505)。
关键词
旋风分离器
FLUENT
结构优化
响应面法
BBD试验设计
分离效率
cyclone separator
Fluent
structural optimization
response surface method
BBD test design
separation efficiency
