Determination of the Durability of Elements of Power-Generating Equipment with Regard for the Influence of Working Media

被引：8
|
作者：
Ivanyts'kyi, Ya. L. [1 ]
Hembara, O. V. [1 ]
Chepil', O. Ya. [1 ]
机构：
[1] Ukrainian Natl Acad Sci, Karpenko Physicomech Inst, Lvov, Ukraine
来源：
MATERIALS SCIENCE | 2015年 / 51卷 / 01期
关键词：
hydrostatic stresses; strain; hydrogen concentration; strain energy; defects; HYDROGEN;
D O I：
10.1007/s11003-015-9815-y
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We propose an engineering approach to the analysis of the strength and durability of structural elements of power-generating equipment with regard for the influence of hydrogen-containing media, high pressures, and elevated temperatures. We study the stress-strain state of a boiler drum made of 22K steel, under the operating conditions with regard for the hydrogenation of its wall and the actual geometry of the drum. We compute the parameter of accumulated damage to the drum metal for different operating conditions. It is shown that hydrogen accelerates the accumulation of defects and reduces the operating time of the metal by 20-30% in the case of a scheduled shutdown of the boiler and by 30-40% in the case of its emergency shutdown.
引用
收藏
页码：104 / 113
页数：10
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