前盖板上的副叶片可以减少叶轮进口的旋涡损失和颗粒对密封环的磨损。
Former deputy leaves on the cover can reduce the imports of the vortex impeller and particle loss of the wear and tear on the seal ring.
最后根据前盖板的形状进行旋转操作，得到叶轮的三维实体模型。
Finally, according to the shape of the front cover of the rotation, three-dimensional solid model by the impeller.
并着重对前盖板与叶轮间隙内的流动进行了分析，揭示了半开式叶轮输送两相流介质的优点所在。
The flow analysis in the tip between front board and impeller was emphasized, which reflected the advantage of semi-open impeller when it transported the 2-phase medium.
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