Analysis of Leakage at the Connection between Water Inlet Pipe Sleeve and Boiler Drum of WNS4-1.25-Q/Y Boiler
This paper conducts a detailed analysis of the leakage problem at the connection between the water inlet pipe sleeve and the boiler drum of a WNS4-1.25-Q/Y boiler and proposes targe-ted solutions.The analysis shows that the boiler water inlet pipe is a straight pipe,and when the wa-ter rushes directly against the baffle,it causes cold water to rebound on the surface of the drum,leading to local thermal fatigue and eventually causing cracks in the weld seam of the sleeve that penetrate the boiler drum body,resulting in leakage accidents.In dealing with the defects of the boiler and improvement measures,it is suggested to not only eliminate the cracks and replace or re-pair the water inlet pipe but also to improve the water inlet.Specifically,adopting a curved water in-let to avoid similar problems from occurring again.
boiler water inlet pipesleeveweld seam leakagethermal fatigueleakage accident
万方数据
维普
