基于田口方法的井下增压器活塞间隙密封参数优化

Parameter Optimization of Clearance Seal of Piston in Down-holepump Based on Taguchi Method

针对井下增压器活塞的密封问题,结合现有的活塞间隙密封研究,提出了二维梯形增阻槽式间隙密封形式。基于田口方法对梯形增阻槽的槽宽、槽深和倾角3个主要影响活塞密封性能的因素进行分析,泄漏量作为活塞密封性能的衡量标准。采用正交试验法安排数值模拟方案,运用ANSYS-Fluent流体仿真软件进行数值实验研究,选用SST模型和SIMPLE算法,得出了泄漏量与3个影响因素之间的关系。

Combining with the existing study of piston seal, the paper put forward the method of clearance seal, and built the two-dimensional trapezoidal groove. The groove width, groove depth and dip angle are identified as factors of the sealing performance of piston based on taguchi method. The leakage is regarded as the key measure. In terms of the scheme of orthogonal experiment method,numerical simulation was carried out by ANSYS-Fluent, adopting SST turbulent model and SIMPLE algorithm. The conclusion includes the relationship between leakage and the influencing factors and the best groove model.