Research On Centrifugal Pumps Stability Factors Of Vibration Isolation

As a liquid delivery power component, whether in everyday life or in large-scaleproduction pump have played a pivotal role, the most common of which is the centrifugalpump. Centrifugal force is the main driving force of the unit working, is generated by thehigh speed rotation of the impeller. Both mechanical factors and electrical factors, cancause the pump unit vibration. Vibration will not only affect people’s normal life andproduction, but also in long-term effect harm people’s health. More seriously, the largervibrations can endanger production safety. Therefore, it’s extremely necessary to study thecentrifugal pump isolation. With the increasing isolation technology, the pump vibrationstability problems become very prominent, and vibration isolation stability research is ofgreat value. In this paper, focus on centrifugal pump vibration characteristics, the vibrationisolation stability and vibration isolation effects are studied in-depth. Using the traditionalsingle-layer vibration isolation system, different factors effecting on the vibration isolationstability and vibration isolation effect are studied. Based on the results, the system stabilityand vibration isolation effect can be compared by two different schemes in theory. It canbring reference for the practical engineering vibration isolation system improvement andoptimization. Focus on detailed analysis of the system, the pump three-dimensional modelcan be established by Proe. Using the differential method, the vibration amplitudeexpressions in all directions can be deduced. Based on vibration amplitude expressions,system stability can be determined. Since the pump runtime condition has not changed, theexciting force also has not changed. According to the magnitude of the force transmitted tothe base, the system vibration isolation effect can be determined. Secondly, from the pointof view of energy, the system vibration isolation effect can be analyzed based on theamount of energy delivered to foundation. Using the power flow method and Nortonmethod, the system energy expression can be deduced. Using MATLAB software, therelationship between different factors and vibration isolation stability and vibrationisolation effect can be simulated. By comparing the experimental and theoretical results, it’s valid for modeling method. Because the rubber shear isolator material is non-linear, it’svery difficult to directly calculate the horizontal stiffness. The rubber isolator modeling canbe analysed by using ANSYS. Based on the analysis results, the horizontal stiffness can beobtained using the ratio method. Finally, focus on a variety of vibration isolation factors,vibration isolation system stability optimal value can be found using particle swarmoptimization method.