偏轮抽油机杆件尺寸的优化设计

Optimization of dimensions of rod components on deflection wheel beam pumping unit.

为了进一步提高偏轮抽油机的节能效果 ,改善其受力状况 ,对该抽油机进行了杆件尺寸的优化设计 ,推导出该抽油机的计算公式 ,选择了优化方法、优化目标函数和约束条件 ,并对优化结果分析比较。结果表明 ,杆件优化后的抽油机 ,具有较好的运动性能和动力性能 ,最大扭矩因数减小 10 % ;在相同的工况条件下 ,各杆件的受力值减小 30 %～ 5 0 % ,抽油机地面效率提高 5 % ;优化设计中所用的设计方法可行 ,杆件优化设计结果合理。

To improve further the energy saving effect and decrease the stress of the deflection wheel beam pumping unit, optimum design for the rod dimensions of the unit is made. Relevant calculating equations of the pumping unit is derived, and optimization method, optimization objective function and constraint condition are selected. Comparison of the performance of the pumping unit before and after optimization shows that the maximum torque factor decreases by 10%, the forces on the rod components is reduced by 30%～50%, and the surface efficiency of the unit is improved by 5%.