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Journal of Zhejiang University SCIENCE A 2009 Vol.10 No.11 P.1589~1594

10.1631/jzus.A0820763


Experimental and thermal stress investigation on side wall deformation at the pendent convective pass in a utility boiler


Author(s):  Li-ping PANG, Bao-min SUN, Tong LIU

Affiliation(s):  MOE, Key Laboratory of Condition Monitoring and Control for Power Plant Equipment, North China Electric Power University, Beijng 102206, China

Corresponding email(s):   liping_pang@163.com

Key Words:  Utility boiler, Horizontal flue gas side wall in pendant convective pass (PCP), Deformation, Temperature measurement, Thermal stress analysis


Li-ping PANG, Bao-min SUN, Tong LIU. Experimental and thermal stress investigation on side wall deformation at the pendent convective pass in a utility boiler[J]. Journal of Zhejiang University Science A, 2009, 10(11): 1589~1594.

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author="Li-ping PANG, Bao-min SUN, Tong LIU",
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%A Bao-min SUN
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%DOI 10.1631/jzus.A0820763

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T1 - Experimental and thermal stress investigation on side wall deformation at the pendent convective pass in a utility boiler
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J0 - Journal of Zhejiang University Science A
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PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.A0820763


Abstract: 
An experimental investigation is performed on side wall deformation at the pendant convective pass (PCP) in a 300 MW and a 600 MW utility boiler. The temperature distributions are measured on the side wall areas of the water-cooled wall, the PCP and the horizontal convective pass (HCP) in the two utility boilers. These experiments show that there are great temperature differences in the side wall areas during the startup process in both utility boilers. These temperature differences can reach 80~150 (C with the side wall temperature in the PCP area higher than those in the water-cooled wall and the HCP. The highest temperature in the PCP is close to the flue gas side temperature at the same position in the horizontal flue gas pass. Thermal stress analyses are conducted in the side wall areas in the water-cooled wall, the PCP and the HCP with the software ANSYS. The results show that, at great temperature differences, the PCP side wall undergoes negative thermal stresses that exceed the yield strength causing deformation in the PCP side wall.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

Reference

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