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.