压力容器Issue(8)：63-68,6.DOI:10.3969/j.issn.1001-4837.2015.08.011
蒸汽过滤器疲劳强度与寿命分析
Fatigue Strength and Life Analysis of Steam Superheater
赵静 1靳慧1
作者信息
- 1. 东南大学 土木工程学院，江苏 南京 210096
- 折叠
摘要
Abstract
The steam superheater is a kind of pressure vessel which heats the steam from the saturation temperature to the superheat temperature in the boiler steam.The equipment was designed by ASME code,the test was done under 7.1 MPa of hydrostatic pressure in the normal temperature to ensure the bearing capacity.But the working temperature of the steam superheater is about 350 ℃ and the elastic modulus and yield stress would change a lot.The test at working temperature are difficult to realize.The safety and reliability cannot be guaranteed only rely on the experimental research at room temperature. Now the finite element calculations can simulate more condition and can guarantee the safety of steam generator.The steam superheater which is from a synthetic ammonia plant were taken as object of study. The three dimensional elastic-plastic finite element model of steam superheater was established,the dis-placement deformation of the intersection line between the nozzle and cylinder was presented by ANSYS calculating and compared with the experimental results,which verified that the finite element model can be used;Then the steam filter under the real operating conditions was simulated by finite element method, stress distribution and fatigue strength of open hole area were obtained;At last,fatigue evaluation results were compared between ANSYS fatigue calculation result(ASME Ⅷ -2)and the calculation result based on the Rssian Federation national standard ГОСТР25859.关键词
蒸汽过滤器/有限元计算/应力分析/疲劳强度/寿命分析Key words
steam superheater/finite element analysis/stress analysis/fatigue strength/life analysis分类
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赵静,靳慧..蒸汽过滤器疲劳强度与寿命分析[J].压力容器,2015,(8):63-68,6.
