Flow, lift, efficiency, speed, motor power, NPSH, weight are the most important parameters for pipeline centrifugal pumps, and their presence allows pipeline centrifugal pumps to deliver their value and effectiveness. Users in the use of pipe centrifugal pump, the need for pipe centrifugal pump parameters have a certain understanding, because it not only better to help users to use pipe centrifugal pump, but also effective protection of equipment. Pipeline centrifugal pump parameters Pipeline centrifugal pump performance parameters such as flow Q head H-axis power N speed n efficiency η exist between the certain relationship. The relationship between the magnitude of their change is shown by a curve, which is called the performance curve of the pipeline centrifugal pump. Pipeline centrifugal pump performance parameters of the relationship between mutual change and mutual restraint: First of all, the pipeline centrifugal pump top speed as a prerequisite. Pipeline centrifugal pump performance curve has three main curves: flow - lift curve, flow - power curve, flow - efficiency curve. Than the speed of less than 80 centrifugal pump has the characteristics of rising and falling (both in the middle convex, both sides of the bend), said the hump performance curve. Centrifugal pumps with speeds greater than 80 to 150 have flat performance curves. Centrifugal pumps with specific rotations above 150 have sharp drop performance curves. In general, when the flow is small, the lift is high, and as the flow increases, the lift gradually decreases. The shaft power is increased with the flow rate. When the flow rate Q = 0, the corresponding shaft power is not equal to zero but a certain value (about 60% of normal operation). This power is mainly consumed by mechanical losses. At this point the pump is full of water, if the long run, will lead to continuous temperature rise in the pump, pump housing, bearings will be heated, may cause severe thermal deformation of the pump. Pipeline centrifugal pump parameters like the characteristics of human beings, these information can better help the outside world to understand and understand them. Pipeline centrifugal pump after years of rapid development, already have a more powerful basis for the development, I believe further study of its relevant parameters will help pipeline centrifugal pump better growth.
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