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http://dx.doi.org/10.7734/COSEIK.2016.29.4.347

Evaluation of Structural Integrity and Leakage for a Gas Turbine Casing  

Seo, Hee Won (Dept. of Mechanical Design Engineering, Andong Nat'l Univ.)
Ham, Dong Woo (Gas Turbine Development Team, Doosan Heavy Industries & Construction Co. Ltd.)
Kim, Kyung Kook (Gas Turbine Development Team, Doosan Heavy Industries & Construction Co. Ltd.)
Han, Jeong Sam (Dept. of Mechanical Design Engineering, Andong Nat'l Univ.)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.29, no.4, 2016 , pp. 347-354 More about this Journal
Abstract
Because typical gas turbine systems have frequent startup and shutdown operations, it is likely to cause cracks at the gas turbine casing and gas leakages at casing flanges due to thermal fatigue and embrittlement. Therefore, the evaluation of structural integrity and gas leakage at the gas turbine casings must be performed. In this paper, we have evaluated the structural integrity of the turbine casing and bolts under a normal operation in accordance with ASME B&PVC and evaluated the leakage at casing flanges by examination of contact pressure calculated using the finite element analysis. Finally, we propose a design flow including finite element modeling, the interpretation and evaluation methods for gas turbine casings. This may be utilized in the design and development of gas turbine casings.
Keywords
Gas turbine casing; leakage; contact pressure; thermal-structural analysis; finite element analysis; ASME B&PVC VIII-2; stress linearization;
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Times Cited By KSCI : 2  (Citation Analysis)
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