Marine Horizontal/Vertical Type Centrifugal Water Pumps

Description

Manufacture Standard The manufacturing standard refer to JIS SM A**6 “standard for marine electrical centrifugal pump manufacturer” higher than other marine pump company which executive of GB/T****2 “ marine centrifugal pump, vortex pump general technical conditions”. Bearing design life is *0, **0 hours rather than *0, **0hours on GB/T****2. Hydraulic test pressure of parts 2 times the working pressure, rather than the 1.5 times provision on GB/T****2. Lower vibration and noise requirements. Structure Design Working orthogonal plane structure is used in the vertical pump, and working plane with horizontal pump so it is very easy to examine and repair. Pipeline is never so much as demolished even if it is integral pump when maintenance. The self-priming needing pump can support water-ring vacuum pump and compressed air-driven jet pump, and can be installed on the pump. Hyperstatic design of vertical pump enhances the stiffness of the rotor to ensure the reliability and lifetime of the mechanical seal. Balance arrangement of the two impellers is adopted to minimize the axial force of the rotor and greatly increase the life span of bearings. Material Selection Impeller and seal ring material use of Ni-Al bronze (ALBC3), its wear resistance and corrosion resistance was significantly higher than that of tin bronze and silicon brass. As the sea water pump body and over-current components, material use of Ni-AL bronze (ALBC3), its wear resistance and corrosion resistance was significantly higher than that of ti bronze and silicon brass. Whether it is sea water pump or fresh water pump, stainless steel not less than **4 is use on pump shaft. Ductile cast iron not the grey cast iron is used on cast iron parts. Hydraulic Design Performance parameters are designed in full accordance with different uses of the product in ships. Low noise and reliability of operation in complex working condition are guaranteed by low NPSH design.