在一定的流量范围内，大流量泵的效率曲线基本上包络了小流量泵的效率曲线，因此若采用加大流量的设计方法，不但提高了效率争重要的是提高了设计流量点的效率设计产品实例设计方法设计原理在离心泵中加大流量设计的方法是将给定的流量和比转速进行放大，用放大后的流量和比转速进行设计一台较大的离心泵，使其在较小的流量下工作，从而使泵的效率得到一定程度的提高。如果将的流量加大到从表及曲线图中可以看出大流量泵的效率曲线在流量大于后包络了小流量泵的效率曲线，在流量时高出小流量泵的效率并且大流量泵的扬程曲线全部包络了小流量泵的扬程曲线。采用加大流量的设计法，流量放大系数每则喉径放大系数麟对于用加大流量法设计的泵，环形泵体的内径大小没有变化，喉部放大了增大叶轮宽度在设计部分流泵时，一般取叶轮宽度等于或略大于喉部直径山。

Within a certain flow range, the efficiency curve of the large flow pump basically envelopes the efficiency curve of the small flow pump. Therefore, if the design method of increasing the flow is adopted, not only the efficiency is improved, but the most important thing is to improve the efficiency of the design flow point. Design Product Example Design Method Design Principle The method of increasing the flow design in a centrifugal pump is to amplify the given flow and specific speed, and use the amplified flow and specific speed to design a larger centrifugal pump to make it Working under a smaller flow rate, the efficiency of the pump is improved to a certain extent. If the flow rate is increased to the table and graph, it can be seen that the efficiency curve of the large flow pump envelops the efficiency curve of the small flow pump after the flow rate is greater, and the efficiency of the small flow pump is higher at the flow rate and the large flow pump The head curve of all envelopes the head curve of the small flow pump. Adopting the design method of increasing the flow rate, the flow rate magnification factor is equal to the magnification factor of each throat diameter. For the pump designed with the increasing flow method, the inner diameter of the annular pump body has not changed, and the throat is enlarged and the width of the impeller is enlarged. Generally, the width of the impeller is equal to or slightly larger than the diameter of the throat.