T91 High Temperature Reheater Piping Leakage Analysis

Yu Jing Niu; Li Song; Feng Tao Hu; Ke Feng Wang

doi:10.4028/www.scientific.net/AMR.605-607.300

Paper Titles

Intelligent Design of Mechanical Products Based on Function-Knowledge-Structure
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Development of Parts Family Manage System Based on PDM in Large-Scale Air Separation Equipment
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An Efficient Torlerance Robust Design Method Based on Taguchi Theory
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Research on Electric Power Equipment Preventive Maintenance Cycle on the Basis of Economic Life Cycle Costing
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T91 High Temperature Reheater Piping Leakage Analysis
p.300

Accessories’ Matching Design Study and Development
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Evaluation Model of Aircraft Maintenance Mode Based on Improved AHP
p.308

Design and Realization of Hand-Held Smart Electrothermal Umbrella Applied New Materials
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Research on Individualized Requirement Modeling Oriented to the Dynamic Synchronization
p.319

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 605-607T91 High Temperature Reheater Piping Leakage...

T91 High Temperature Reheater Piping Leakage Analysis

Abstract:

Now T91steel is more and more used in power plant pipe components. The leakage of high temperature reheater pipe was analyzed after surveying the leaking site, checking material composition and observing the microstructure of related materials. We found that a large number of dust at the bottom of the pipe stopped the expansion of high temperature reheater tube rows, the connecting structure between pipes through fins was irrational, and welding fins process was substandard. Cracks were originated from fin-side weld, and extended to the pipe wall , which finally led to a leakage.