调径变矩节能抽油机平衡方案研究

研制的调径变矩节能抽油机显著特点是取消了常规抽油机的曲柄平衡 ,将抽油机的游梁设计成Γ形弯游梁体和I形吊臂两段 ,通过改变吊臂上配重质量和其重心运动轨迹综合调整平衡 ,可针对悬点载荷峰值Wmax出现的不同位置 ,将配重力矩对应地调到最大 ,有效地削减峰值扭矩。这种抽油机平衡率达 90 %以上 ,比常规抽油机节电 30 % ,制造成本下降 10 % ,售价低7% ,已在全国各大油田推广应用。

Research on balance scheme of a new energy-saving pumping unit

A new torque-adjusting energy-saving pumping unit is developed. The walking beam of the new pumping unit is designed with two parts: a r -shaped bended walking beam and a I-shaped suspension arm. No crank counterbalance is designed in the unit.The weight of counterbalance on the suspension arm and its gravity center trajectory can be adjusted according to maximum horsehead load to reduce maximum torque. The balancing rate of the new unit is above 90%, and it is energy-saving and costs lowly.