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针对轴向入口叶片式多管分离器中的一根旋风管,基于纳维斯托克方程和连续性方程,采用雷诺应力模型,并结合现场工况,使用有限体积法对单管旋风管内三种叶片流道堵塞情况下的速度场、压力场和动能耗散进行了数值计算,分析了压力损失和分离效率的变化.结果表明,叶片堵塞会使环形分离空间的气流出现偏心,且影响宽度和深度随叶片堵塞个数增加而加深;叶片堵塞造成局部压力和速度的增高,使旋风分离器内压降增加;偏心气流和局部速度增加,造成分离效率随叶片堵塞数增加而略有上升;叶片堵塞不会导致旋风分离器分离效率下降,但是会提高压降、增大能耗,从而导致在压缩机输出功率不变的情况,因管路阻力增大而使流量减小,实质上是降低了处理气量,但短时不会造成气质降低.分离器在正常情况下满足天然气处理要求,叶片堵塞时应及时清理堵塞物以保持额定的处理气量并降低能耗,稳定输气装置的负载.
Based on the Navier-Stokes equations and the continuity equation, a cyclone tube is used for the axial inlet vane multitubular separator. The Reynolds stress model is adopted and the finite volume method The velocity field, pressure field and kinetic energy dissipation in the case of clogging with different kinds of blades were numerically calculated, and the pressure loss and the separation efficiency were analyzed. The results showed that the clogging of the blades caused the eccentricity of the airflow in the annular separation space and affected the width And the depth deepened with the increase of the number of clogging leaves. The clogging of the leaves resulted in the increase of local pressure and velocity, which led to the increase of the pressure drop in the cyclone. The eccentric airflow and local velocity increased, The clogging of the vanes does not lead to a decrease of the efficiency of the separation of the cyclone, but increases the pressure drop and increases the energy consumption, resulting in a decrease of the flow rate due to the increase of the pipeline resistance when the output power of the compressor is constant. In essence, Reduce the amount of processing gas, but short-term will not result in reduced temperament.Discrete separator to meet the natural gas processing requirements under normal circumstances, timely blockage leaves should be cleared to block Nominal holding process gas and reduce power consumption, the load stabilizing gas transmission apparatus.