Boiler feedwater and other high-temperature clean water

Nominal speed: 2980r/min

Medium: boiler feed water, clean water, or other liquids with physical and chemical properties similar to water.

Medium temperature: DG type medium and low pressure boiler feedwater pump ≤ 105 ° C; When the medium temperature is ≥ 80 ° C, external cooling water must be connected for cooling.

ZDG high-temperature boiler feedwater pump, DG type sub high pressure and high-pressure boiler feedwater pump ≤ 160 ° C, must be cooled by external cooling water and flushed with machine seal cooling.

Flow range: DG type medium and low pressure boiler feedwater pump 4-185m/h

ZDG high-temperature boiler feedwater pump, DG type sub high pressure and high-pressure boiler feedwater pump 12-500m2/h

Maximum working pressure: DG type medium and low pressure boiler feedwater pump, ZDG high-temperature boiler feedwater pump suction pressure+maximum pump pressure ≤ 7MPa

DG type sub high pressure boiler feedwater pump suction pressure+maximum pump pressure ≤ 10MPa

DG type high-pressure boiler feedwater pump suction pressure+maximum pump pressure ≤ 20MPa

The DG series boiler feed water pump is a segmented multi-stage centrifugal pump, with the inlet section, middle section, and outlet section connected as one unit using tightening bolts. The inlet and outlet are both oriented vertically upwards. The static seals between the water inlet section, middle section, and outlet section use dual seals of metal surface sealing and “O”-shaped sealing rings. The hydraulic components are designed and optimized using CFD flow field analysis technology, providing excellent performance. The impeller and guide vanes are precision-cast, with smooth flow channels, high dimensional accuracy, and high efficiency. The rotor is dynamically balanced, with a precision level higher than the industry standard. When viewed from the drive direction, the pump rotates clockwise. The DG type medium and low-pressure boiler feed water pumps use a base support structure and comply with the standard of GB/T 5657-1995 “Centrifugal Pump Technical Conditions (III)”.

ZDG high-temperature boiler feed water pumps and DG type medium and high-pressure boiler feed water pumps adopt a center support structure, coupled with a slip system to effectively compensate for thermal deformation. ZDG high-temperature boiler feed water pumps and DG type medium and high-pressure boiler feed water pumps use an integrated cooling water piping system for water supply, and users can choose to use a mechanical seal self-flushing system according to their requirements, eliminating the need for users to provide flushing water for the mechanical seal, making installation and use more convenient.