Test Research on the New Electromechanical Axial-Flow Pump with Advantages of Small Vibration and Noise

For the vibration and noise of conventional axial-flow pumps being oppressive, a new electromechanical axial-flow pump with advantages of small vibration and noise had been designed, which integrated the impeller into drive electromotor by combining the rotor of motor and the blade of impeller. The new electromechanical axial-flow pump not only had small size and high efficiency, but also can greatly reduce vibration and noise by taking off the drive axis of pump. Performance tests had been done for the pump and results showed that the efficiency and head were very close to design value. Vibration and noise tests had also been done, results showed that vibration acceleration levels on the feet of pump base could be less than 110dB and airborne noise levels could be less than 75dB, which would be smaller than conventional axial-flow pumps.