Deformation Analysis and Improvement Measures of Superheater Tubes in an Industrial Boiler
Author of the article:WANG Jiao;LI Ming;HE Yu;WANG Meng
Author's Workplace：Xi'an Special Equipment Inspection and Testing Institute,Xi'an 710065,China
Key Words：superheater tubes deformation analysis material steam flow field
Abstract：According to the deformation of superheater tube of an industrial boiler,the materials,structure and fluid in operation are analyzed.The results show that the main reason for the deformation of the superheater tube is that the flame of the boiler is too long and the superheater is in dry burning state when the boiler burner is started.In addition,the boiler water into the superheater pipe,water in the lower part of the pipe,steam in the upper part,resulting in the pipe circumference temperature is uneven.According to the reason of deformation,the preventive measures of superheater tube deformation are put forward,that is,adjusting the flame length,improving the steam separation effect of boiler,changing the superheater arranged upstream to the downstream,and the superheater tube is made of alloy steel.
