多项式曲线顶端对子母叶片受力的改善及其特性研究

Improvement of Polynomial Curve Top on Vane Force Action and Force Character Research of Composite Vane Pump

针对某水下热动力装置的叶片泵脱空现象,对全工作区子母叶片受力过程进行了分析与建模,对叶片顶端形状进行了优化,对叶片压力分配比和接触位置进行了仿真,并与顶部为圆弧的单面后倾子母叶片和对中圆弧子母叶片这两种叶片的受力情况对比。结果表明:通过优化所得到的四阶多项式顶部曲线子母叶片在受力均衡性和减小脱空两方面拥有比其它两种叶片更好的特性。

Aimed at the phenomenon of disengagement between the vane and the stator of the submarine heat dynamic equipment, the force action analysis was completed and the model of the vane in the whole work range was built. Based on the least area of the opposite contact force, the polynomial skeleton line of the vane was optimized, the contact force of the vane in contact position and the area rate of the low vane were simulated, and the contact force was compared for the vane with center circular skeleton line and with single - side backward top. The result shows that the vane with optimized four power polynomial curve in the top has better character in the force balance and the lessening of disengagement than the other kinds of vanes.