Answer: Generally, the curve or characteristic curve of the relationship between the main performance parameters is called the performance curve or characteristic curve of the centrifugal pump. In fact, the centrifugal pump performance curve is the external expression of liquid in the pump. have to.

Feature curves include: flow-rising curve (Q-H), flow-power curve (Q-N), flow-efficiency curve (Q-η), flow-air erosion balance curve (Q- (NPSH) R).

The performance curve function is the arbitrary flow point of the pump, which can find a set of sets of raw, power, efficiency, and air erosion margin on the curve. 2. High -efficiency points of centrifugal pumps are called the best working conditions, the best working conditions are generally designing work conditions, the rated parameters of general centrifugal pumps, that is, the design work conditions and the best working point. near. Selecting high -efficiency interval operations in practice, energy saving, and ensuring the normal work of pump pumps, so understanding the performance parameters of the pump is very important.