Cavitation vibration is a very important part of pump vibration

Clearance and wearing parts Ensure that the motor bearing clearance is appropriate; appropriately adjust the clearance between the impeller and the volute; regularly check and replace the impeller orifice ring, the pump body orifice ring, the interstage bushing, the diaphragm bushing and other easily wo parts.

These reasons will cause vibration. When the changed stiffness is an integral multiple of the angular frequency of the system, resonance occurs. Use sliding bearings that do not need to be lubricated. Impeller Whether the dynamic and static balance is qualified. At this time, the viscosity of the lubricating oil can be appropriately increased to prevent the damage of the hydrodynamic lubricating film.

Cavitation vibration is a very important part of pump vibration. Factors of the pump itself The asymmetric pressure field generated when the impeller rotates; the vortex of the suction pool and the inlet pipe;China roller bearings manufacturers the occurrence and disappearance of the vortex inside the impeller, the volute and the guide vane; the vibration caused by the vortex caused by the valve half-opening; the limited number of impeller blades

Uneven distribution of outlet pressure; outflow in the impeller; surge; pulsating pressure in the flow channel; cavitation; water flowing in the pump body will have friction and impact on the pump body, such as water flow hitting the front of the diaphragm and guide vane Boiler feedwater pumps that transport high-temperature water are prone to cavitation vibration; pressure pulsation in the pump body is mainly caused by the seal ring of the pump impeller.

Finally, in order to prevent the pump's amplitude from being too large, measurement and analysis of vibration conditions can also be used to determine the best working parameters of the pump.