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论述ＫＱＰＬ（凯泉牌立式）内循环屏蔽泵的循环量与孔径的计算。文中针对内循环量与中空轴孔径的关系，提出一套实用计算孔径的方法，设计中得到有效应用。
Discusses KQPL (Kaishentai vertical) circulation pump shield circulation and aperture calculation. Aiming at the relationship between the inner circulation and the hollow shaft aperture, a set of practical methods for calculating the aperture is proposed in this paper, which is effectively applied in the design.