The basic principle of water pump selection, the process of pump selection.

The basic principle of water pump selection, the process of pump selection.

1. Basic principles of water pump selection.

Water pump is a kind of a lot of wide range of general machinery and equipment, it is widely used in petroleum, chemical, electric power, metallurgy, mining, choose ship, light industry, agriculture, civil and defense departments, occupies an important position in national economy.According to the statistics of 79 years, the pump output in China reaches 1256,000.The power consumption of the pump accounts for more than 21 percent of the nation's electricity consumption.Therefore, it is of great significance to reduce the energy consumption of the pump and to save energy.

Designed and developed in recent years, we have the pump industry a lot of high efficiency and energy saving products, such as pneumatic diaphragm pump, IHF pumps, magnetic drive pumps, PF, the FSB, 2 xz vacuum pump, ZW self-priming pump type of pump products, such as to reduce the energy consumption of the pump plays a positive role.But now in various fields of national economy, due to the unreasonable type selection, such as only need a electric oil pump can solve the problem to choice the centrifugal oil pump, a lot of the running status of pump in the unreasonable operation efficiency is low, waste a lot of energy.Also, the pump is not reasonable to use, or the cost of maintenance is increased and economic benefits are low.It can be seen that reasonable selection of pump is also important to save energy.

The so-called rational choice pump is to comprehensively consider the comprehensive technical and economic indicators such as the investment and operation cost of the pump unit and pump station, so as to make it conform to the principles of economy, safety and application.Specifically, there are several aspects:

Must meet the requirements of the use of flow and head, requiring the pump running work time points (device characteristic curves with the pump performance curve intersection) often remain within the range of efficient operation, save power and not easy attaint parts.

The selected water pump should be small in size, light in weight and low in cost, but also have good characteristics and high efficiency.

With good anti-cavitation performance, it can reduce the excavation depth of the pump room without cavitation, smooth operation and long life.

According to the selected pump station, the project investment is low, the operation cost is low.