新型螺旋除砂器的设计与应用研究

Study on Design and Application of New Spiral Desander

目前油田使用的常规固-液分离设备无法对高含砂、大流量的砂-液混合物进行高效分离,为此设计了一种新型分离设备——螺旋除砂器。依据工程流体力学中的伯努利方程建立了螺旋除砂器相关结构参数的数学模型,利用MATLAB软件对模型中的数据进行分析处理,确定其最优结构参数;根据具体结构尺寸,建立三维模型,利用FLUENT流体仿真软件对其内部流场进行仿真分析。对比分析理论计算值与模拟仿真值,发现2者之间偏差较小,进一步证明了螺旋除砂器结构设计的合理性。螺旋除砂器内部流场的仿真模拟,验证了螺旋除砂器对固-液两相混合物分离的可实现性,并为螺旋除砂器实际的设计制造提供了理论依据。

Conventional solid-liquid separators commonly used in China are not able to efficiently deal with high flow rates sandliquid mixtures with high sand content. A new spiral desander was recently developed to tackle this problem. The design of this new desander involved the establishment of a mathematical model based on the Bernoulli equation to characterize the structure of the desander, the analyses of the data of the model using MATLAB® software to determine the optimum structural parameters, the setup of a three-dimensional model based on the structural parameters, and the simulation of the flow field inside the desander using the simulation software, FLUENT®. Comparison of theoretical calculations and simulation results showed that there were very few differences between the two, proving the validity and feasibility of the design. Simulation of the flow field inside the desander verified the feasibility of separating solid-liquid using spiral desander, and provided a theoretical basis for manufacturing spiral desander.