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目进苏联每年要生产几十万台离心泵,需电超过2000亿度。因此,在提高叶轮的效率和扬程系数方面,如何进一步改进离心泵结构,就成了节约电能和减少金属用量的重要课题。譬如:提高效率1.5％。仅就火电厂的冷却给水泵而言,每年即可保证节约电能10亿度;每台泵提高叶轮扬程系数15％,即能减少金属用量10％。过去在设计叶轮时,均未能充分利用理论扬程基本方程式(即欧拉方程式)中所得
Head into the Soviet Union each year to produce hundreds of thousands of centrifugal pumps, electricity more than 200 billion degrees. Therefore, how to further improve the structure of the centrifugal pump in terms of improving the efficiency and lift coefficient of the impeller has become an important issue of saving electric energy and reducing the amount of metal used. For example: to improve efficiency of 1.5%. Only on the thermal power plant cooling pump, annual energy savings of 1 billion degrees to ensure that each pump to raise the impeller lift coefficient of 15%, which can reduce the amount of metal 10%. In the past in the design of the impeller, they failed to make full use of theoretical lift equation (ie Euler equation) income