新型低剪切母液流量计调节器内部结构优化研究

Research of Internal Structure Optimization in a New Low Shearing Mother Fluid Flow Rate Regulator

针对聚合物驱应用的母液流量调节器对聚合物溶液剪切降解大的问题,将现用母液流量调节器内部调节阀结构进行改进优化。通过运用计算流体力学软件FLUENT进行流场参数模拟计算,优选出梭形杆结构作为调节器高速流区阀芯,同时考虑最佳的降速效果和流量调节性能,优选出阀芯单节长度为25 mm,节数为6节。现场试验结果表明:常规母液流量调节器的平均黏损率为5.01%,而新型母液流量调节器的平均黏损率为1.48%,在相同工况下比常规母液流量调节器的黏损率降低3.53%。

Aimed at the problem that the mother fluid flow rate regulator used for polymer flooding has a severe shearing degradation on polymer solution,the internal control valve structure of the existing mother fluid flow rate regulator is improved and optimized.By using the computational fluid dynamics software FLUENT,parameters of flow field are simulated and calculated,and then the spindle bar structure is selected as the valve element of the high-speed flow are in the regulator.Meanwhile,considering the optimal speed reducing effect and flow rate adjustability,the most optimizing simple link length and link number are 25 mm and 6 respectively.The field test results indicate that the average viscosity loss of the conventional mother fluid regulator is 5.01%,while that of new type of mother fluid regulator is 1.48%,and under the same working conditions,compared with the conventional one,the new one can reduce viscosity rate by 3.53%.