Study On Fuzzy And Hierarchy Compositing Evaluation System For Large Pumping Stations

With the development of industry and agriculture after the foundation of new China, we have made standout achivements in our irrigation and drainage course by pumps. As it is recorded, so far, more than a half million pumping stations with all kinds of sizes have been established whose power attain 70 million kilowatt. However, half of them have kept working over 20 even 30 years. Most equipments and buildings are in different degrees of aging. Such problems as function decaying, benefits declining and malfunctions happening have already badly threatened safety operation of the pumping stations. After a while, our government will put high investments to renew and rebuild the projects. The most important thing is to make correct diagnosis and evaluation, which is the premise of deciding optimal maintenance, reinforce and rebuilding. From these, we can conclude that nowadays aging evaluation has become a hot topic and task in the research of pumping station engineerings.Comparative index system are builded based on former production and a mass of research, through analysis to the aging principle from two aspects of equipments and buildings in this dissertation.For the fact that the aging principle of pumping stations is perplexing , a proper model suitable for aging evaluating based on Fuzzy Hierarchy compositing method. Ascertaining the weight of indexes through applying analytical hierarchy process. Measuring quantitative and qualitative index and progressing general evaluating through fuzzy maths theory. At the same time , Gray theory is applied in forecasting aging of pumping stations and maths method is builded.Testing the Fuzzy Hierarchy compositing model through an engineering case, validating the veracity of the consult. Making an automatic evaluating system using VB language which successfully applying the computer technology into this research. In this way, we reach a more simple, rapid and exact method.