子母叶片泵叶片顶端形状对叶片的受力影响

针对子母叶片泵叶片形状对受力影响的问题,就无厚叶片、顶部为圆弧的单面后倾叶片和对中圆弧叶片3种情况对吸油区叶片受力过程进行了分析与建模,并仿真得到一系列母叶片所受接触反力的变化曲线.结果表明:忽略叶片厚度得到的结果与实际情况有很大的差异,顶部有圆弧的叶片比单面后倾叶片受力状况要好.可以通过优化的方法,综合考虑叶片受力状况以及叶片的结构与运动等因素,来选取对中圆弧叶片顶部圆弧的半径.

Influence of vane top's shape on force action on vane proper of composite vane pumps

Aimed at the problem of influence of vane shape of composite vane pumps on the force action on the vane itself,the force action process in the vicinity of pump inlet is analyzed and modelled in connection with such three cases as the thick-less vane,circular single-side backward vane top,and vane with circular skeleton line,and then a series of variation of contacting reactional forces on the major vane of the pump is simulated and obtained.The result shows that,when the thickness is ignored,the result obtained is quite different from the actual case,and,for the case with rounded vane top,the force action on the vane is better than that on circular single-side backward vane top.The radius of top arc of the vane with circular skeleton line may be selected be means of optimization when the factors such as force action on the vane,vane configuration,and vane kinematics are taken into consideration comprehensively.