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《Power Engineering》 2004-05
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Creep Analysis and Life Calculation of the Pressure Components inside Boiler

LIUTong~1,XUGang~1,PANG Li-ping~1,LIANG Zhi-fu~2 (1. North China Electric Power University, Beijing 102206, China; 2. Mongda Power Limited Liability Company, Inner Mongolia 014300, China)  
High temperature superheater is taken for example to analyze the life loss rule of pressure components inside boiler. The Larson-Miller method and the Robinson rule are adopted to calculate the life loss caused by creep. In the same time, the effect of fatigue is accounted. And a simplification formula is put forward to apply in the on-line life inspection system. While computing the stress of the tube wall, we make the stream pressure under the rated load as the constant working pressure. This can reduce calculation and make it safe. We consider the influence of the high temperature corrosion by original thickness of the wall multiplying a amending coefficient. Through appropriately redeeming and amending. The temperature signals of the superheater tube wall, which are directly measured on the spot, are put into the life loss online inspecting system. Refs 5.
【CateGory Index】: TK223.3
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