Studies On Cavitation And Fretting Wear Of Centrifugal Pump And Counter Measures

Cavitation phenomenon is centrifugal pump operation of common fault, for the safety of the pump cavitation, economic operation are destructive role. Suction piping for the pipeline design and actual working conditions or in the operation of the pump has a difference state, plus the atmospheric pressure, temperature, medium pressure changes by the gasification often the seriousness of the cavitation, so as to guide the performance of the pump is greatly reduced and reduced flow rate, pressure loss more, increase energy consumption, and at the same time the impeller and the service life of the blade was greatly reduced, serious impact on the pump station benefits. The pump to put into operation, it is difficult to be totally overcome their own pump cavitation performance cause cavitation, can use scientific and effective methods to reduce the pump cavitation in the running state of influence.Centrifugal pump in the practical application does not necessarily operation in design working conditions, or even simply doesn't work in design working conditions, and fault and reliability of the problem but often happen in the design working conditions. No matter in the design or use, there are problems of cavitation of awareness or not enough, still needs to be in the process of researching deepening and development, therefore, to thoroughly solve the problem and great distance.This paper the centrifugal pump cavitation problem in the present study dynamic combination of tap water production practice was discussed. Focused on the research of water production process in water pump station, to send water pump station and pump station of centrifugal pump analysis of failure causes and countermeasures. Centrifugal pump real operation, the cause of the cause of the failure usually is not the only, but combines the various aspects of the factors, this needs comprehensive application under the complete analysis of the fault theory, especially with specific water conditions specific analysis, find the key methods to solve the problems and countermeasures. Through the research centrifugal pump cavitation wear reasons and combined with the actual needs of tap water production, from optimization scheduling, save energy, improve efficiency, reducing the maintenance and repair rate and safety production such aspects, from the point of view of the user and feasible preventive measures and the improved methods. In the production practice in centrifugal pump based on all kinds of the cause of the problem being away from the design working conditions range operation, taking the conditions, water quality, the impeller material, analyzed through sampling experiment, the pumping stations data analysis, seek for the theoretical basis for and measures, in order to select the optimal treatment method to explore economic and feasible countermeasures.