The Abnormal Vibration Analysis And Vibration Reduction Research Of Vertical Barrel Pumps

In order to coordinate the Daqing petrochemical company 6 million tons/year, oil refining project, solve the problem of long period operation of the production plant. Manufacture by Dalian acid proof pump plant in 1993, the model for DL12A- 15 x 20 vertical tube bag pump used to refining a catalytic cracking unit back to factory over head. In the vertical tube bag pump normal use process, appeared not unexpected failure of maintenance, after factory site maintenance, pump running status is still not good. Data such as vibration exceeds bid badly, and the mechanical seal leakage problems.In this paper, by understanding the working principle of the vertical tube bag pump research of pump and the effects of the structure of abnormal vibration. In accordance with the relevant technical data, the use of vertical tube bag pump vibration analysis technique, the abnormal vibration of a series of problems in a reasonable manner of data solutions, resulting in abnormal vibration of tube bag the formation mechanism of the effects of the pump operation.Selected according to the actual situation of vertical tube bag pump motor bearings and machine under pump bearing as real-time monitoring, formulate a detailed monitoring programme. Using condition monitoring instrument for monitoring vibration area, through the analysis of preliminary determine the cause of the pump vibration spectrum data. On this basis, the disassemble pump body related components for testing, find out the real reason of abnormal vibration, verify the accuracy of spectrum diagnosis. Through the comprehensive analysis: basic installation, medium gasification, wear parts of the rotor and the motor bearing is the main cause of abnormal vibration in vertical tube bag pump.To find out the reasons, put forward the corresponding rectification measures, solve the problem of excessive vibration. Put forward to strengthen machine increase tiny flow line, pump barrel external supporting reform measures, such as reducing medium evaporation and resonance influence on vertical tube bag pump has its own amplitude, so as to reduce the abnormal vibration of vertical tube bag pump damage, achieve the goal of saving maintenance time, saving the maintenance cost, also to other vertical tube bag pump provides a theoretical basis on the solution of the abnormal vibration.