Vibration Reliability Analysis of Boiler Economizers and Airheaters

Shi Jinyuan  (Shanghai Power Equipment Research Institute, Shanghai 200240)
Xiong Jian£¨Ministry of Machinery Industry of China, Beijing, 100823£©

Abstract: This paper presents a vibration reliability analysis method of boiler economizers and tubular airheaters. The method considers the frequencies of Karman vortex shedding and those of the standing accoustic waves as random variables. The reliability that boiler economizers or tubular airheaters are distanced from acoustic resonance is estimated by means of probabilistic design method. A reliability analysis example of the tubular airheater vibration is given.
Keywords: vibration, boiler, economizer, tubul ar airheater, acoustic resonance, reliability analysis.