Fatigue Investigation of Metallic Diaphragm in Sonic Soot Blower

Nowadays, energy is one of the most expensive factors in the country s industry. It is possible to optimize energy consumption by increasing efficiency of industrial equipment such as furnaces, boilers and etc. By decreasing sedimentation. One of the most important modern cleaning methods is acoustic cleaning method which compared to other methods has more merits and advantages. One of the most important reasons of the break down and failure of sonic soot blowers is fracture and early failure of the diaphragms. Earlier in a research by the NRI, the diaphragms used to begin to crash quickly. Based upon the failure analysis by SEM, it is suggested to design a gap between the diaphragm and the chamber in order to solve this problem. The obtained stress distribution from FEM software is applied to lifetime using fatigue S-N diagram and equations. The result of different gaps could help us to have the best design which will be used to manufacture a laboratory sonic soot blower.