Open AccessNumerical research on thermal stress of steam cooler tube sheet mechanical structure
Author(s) -
Jun Wu,
Zhaoli Zheng,
Yong Li,
Jie Pang,
Zhiwu Ke,
Nan Zhang
Publication year - 2021
Publication title -
journal of physics: conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
ISSN - 1742-6588
DOI - 10.1088/1742-6596/2125/1/012013
Subject(s) - heat exchanger , tube (container) , shell and tube heat exchanger , materials science , stress (linguistics) , finite element method , boiler (water heating) , structural engineering , mechanical engineering , engineering , composite material , waste management , linguistics , philosophy
Steam cooler is one of the most important mechanical equipment in thermal power generation system and nuclear power generation system. The steam cooler bears a huge temperature gradient load when the working conditions are switched. In order to analyze the thermal stress of steam cooler tube sheet with high temperature load under harsh working conditions, the thermal-structural coupling analysis model of steam cooler tube sheet is constructed with finite element method. The results show that the stress concentration exists at the position connection between heat exchanger tube and cylinder. The maximum stress is located at the outermost heat exchanger tube with the peak stress of 320MPa. The heat exchanger tube layout alone cause higher stress. This situation should be avoided in the design of heat exchanger tube sheet. Furthermore, the strength and safety of the steam cooler tube sheet are evaluated with the stress linearization method. The steam cooler tube sheet design meets the safety requirements of structural strength under high temperature load.