What Are The Advantages Of A Segmented Multistage Centrifugal Pump?

In fact, it is equivalent to mounting several impellers on a shaft, and the pump casings are cascaded back and forth to become a multi-stage centrifugal pump working in series. Its characteristic is that the diameter and speed of each impeller remain the same, then the flow is constant, but the head and shaft power increase proportionally with the number of stages. Each segment contains an impeller and a corresponding guide vane. The first stage suction section impeller is generally single suction. In some cases, in order to improve the cavitation performance of the pump, it can also be made into a double suction water inlet mode, which can be radial water inlet or shaft end water inlet. In order to balance the axial water thrust, the next stage water outlet section is equipped with a balance plate. The entire rotor of the pump can be oscillated left and right during operation, and the balance plate automatically maintains the rotor in a balanced position, or the pairs of impellers are arranged back to back. The advantage of the pump is that it can increase the number of stages to meet the system head requirements and achieve the purpose of economic operation.