The superheater of ultra-supercritical boiler plays a crucial role in the heat transfer system of boiler,which is responsible for reheating the high temperature and high pressure steam from the water wall to reach the rated temperature and pressure,and then entering the steam turbine to do work.However,superheater leakage failure will lead to system efficiency decrease,safety risks increase and other problems.The main causes of superheater leakage failure include material defects,corrosion caused by overheating conditions and fatigue caused by thermal stress.In order to prevent leakage and failure,measures can be taken to improve the material and manufacturing process,control the water quality and optimize the bending structure.The comprehensive application of these measures can effectively reduce the risk of leakage failure and ensure the safe and stable operation of the boiler system.
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