Pump is a surface of a large number of widely used general-purpose machinery, it is widely used in petroleum, chemical, power metallurgy, mining, choose ship, light industry, agriculture, civil and defense sectors, occupies an important position in the national economy. According to 1979 statistics, China’s pump output reached 1.256 million units. Pump power consumption accounted for more than 21% of national electricity consumption. Therefore strongly reducing pump energy consumption, save energy with great significance with.
In recent years, we have designed and developed a number of pump industry energy-efficient products, such as IHF, CQB, FSB, UHB and other models
Pump products, reducing pump energy consumption played a positive role. But now in various fields of national economy, since the selection of unreasonable, many pumps is unreasonable operating conditions, low operating efficiency, and waste a lot of energy. Because there is a pump selection unreasonable, impossible to use, or maintenance costs increase, low economic efficiency. Thus, a reasonable pump selection for saving energy are equally important.
The so-called reasonable pump selection is to consider the investment and operating costs of the pump units and pumping stations and other comprehensive technical and economic indicators, to be in line with economic, security, the principle applies. Specifically, the following aspects:
Must meet the flow and head requirements, which called for the pump operating time point (the intersection of device characteristic curve and pump performance curve) keep running in the high range, so not only save power and is not easy to damage the parts.
The selected pump should be small size, light weight, low cost, but also has good characteristics and high efficiency.
It has a good anti-cavitation performance, not only can reduce the excavation depth of the pumping station, without making the pump cavitation, smooth operation and long life.
Selection principle of pump
