Stainless steel multi-stage centrifugal pump pump pump is equivalent to more than one single pump in series, so sometimes less than 2 to 1 still can work, not affect the pump displacement, will only change the pump head.
1. Water injection pump in what circumstances can be reduced?
By class is composed of water injection pump injection pump run-time pump pressure difference decision. The motor full load operation conditions, when the pump pressure is 1.2 times the impeller pressure to 1.1, minus 1; 2.2 times when the pressure difference of pumps for the single stage impeller pressure, minus 2.
2. How to reduce the water injection pump?
Injection pump level reduction part is primary and secondary and final. The reduction and secondary will require additional processing or restructuring diversion device, or suction performance, field application is not much. Reduction of the last stage is more convenient. The first and last stage impeller demolition guide wing (also called the guide vane), ring matched with the last stage impeller removed, the other with a retaining sleeve can be. Minus two level can be carried out in the final stage and last stage.
3. Water injection pump after the main parameters of the main parameters which change?
The main parameters of the pump are pump efficiency, pump pressure and shaft power. Reduction stage after the pump efficiency is slightly reduced (very small); pump pressure drop, basically the original rated pump pressure minus the average single stage impeller pressure; shaft power is reduced, reducing the energy loss in the outlet valve.
