膜片联轴器失效故障树分析

Abstract

The diaphragm is the key component in diaphragm coupling,and its material must be required within high strength,fatigue durability,heat resistance and corrosion resistance.In some harsh conditions,the diaphragm coupling may be fail even scrap.The main causes of diaphragm coupling failure are diaphragm damage to twist off,wrong installation and bolt damage distortion.The fault tree analysis,as the valid method of engineering system reliability analysis and evaluation,it provides an effective method for diaphragm coupling failure analysis.By means of qualitative analysis and quantitative analysis of the fault tree analysis of diaphragm coupling failure,it is pointed out that diaphragm failure is the most significant cause of diaphragm coupling failure,bolt damage and bend are important factors of diaphragm coupling reliability.Finally,the effective measures that can prolong diaphragm coupling service life are put forward.