What is the role of boiler feed pump front pump

Feed water front pump role: in order to improve the deaerator in the sliding operation of the economy, while ensuring the safe operation of the water pump, and the pump running in series.more about tube well water pumps
        1, the first forward pump speed is low, reducing the NPSH (which is based on the steam pump similarity theorem: the same pump of the NPSH is proportional to the square of the speed!), While the front pump with double suction impeller As well as corrosion-resistant materials, so that the main steam pump to avoid cavitation;
        2, due to the low speed of the front pump, the required pump inlet pouring height reduction, thus reducing the height of the deaerator installation, saving the construction costs of the plant.
Boiler feed pump front pump application:
        1, commercial power generation on behalf of enterprises: Shanghai electric repair, submerged, Zhengzhou Electric Power, KSB, etc .;
        2, enterprise-owned power station: Chongqing pump factory, dark blue, Garley, Cole, Sulzer and so on.
        3, the commercial power generation pump for the self-owned power plant boiler feed pump can produce the same, but this pump is too small, many times it may not participate, and Chongqing pump is to expand this area, the future will give this market Impact.