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Creep rupture residual life prediction method of 2.25Cr-1Mo considering reliability evaluation
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Yanfeng AN1, Wei LIU1, Baoshan LIANG1, Zhigang LIANG1, Dongli JU1, Xionghua CUI2, Zheyi YANG2, Yanjun LYU3, Rui SHI3
Thermal Power Generation | 2023, 52(12) : 157 - 163
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Thermal Power Generation | 2023, 52(12): 157-163
• Power generation technology forum •
Creep rupture residual life prediction method of 2.25Cr-1Mo considering reliability evaluation
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Yanfeng AN1, Wei LIU1, Baoshan LIANG1, Zhigang LIANG1, Dongli JU1, Xionghua CUI2, Zheyi YANG2, Yanjun LYU3, Rui SHI3
Affiliations
  • 1.Huadian Energy Co. Ltd. Fulalji Power Plant, Qiqihar 161041, China
  • 2.Xi’an Thermal Power Research Institute Co., Ltd., Xi’an 710054, China
  • 3.School of Mechanical and Precision Instrument Engineering, Xi’an University of Technology, Xi’an 710048, China
Published: 2023-12-25 doi: 10.19666/j.rlfd.202304044
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Creep rupture is one of the most common failure modes of pipelines used in thermal power plants. Residual life prediction is an effective guarantee to ensure the safety, utilization and benefit maximization of equipment. Based on the creep rupture test data of 2.25Cr-lMo heat-resistant steel in actual service for over 200 000 hours, the selection principle of TTP parameters and its influence on the accuracy of life prediction are analyzed by comprehensively considering the working stress and TTP parameters. The relationship curve family of Z-parameter method is used to characterize the vertical dispersion of pipeline durability data in different power plants. The stress-TTP-reliability curve for evaluating the reliability of life prediction is established, and the relationship between the predicted life of different power plant pipelines and the working state of the unit is obtained. The creep residual life of different power plant samples at 540 ℃/45.26 MPa is 1.725 6×105 h and 3.378 8×105 h respectively, and the predicted reliability reaches 99%, which provide maintenance suggestions for the operation reliability of power plant equipment.

2.25Cr-lMo heat-resistant steel  /  reliability evaluation  /  Z-parameter method  /  residual life prediction
Yanfeng AN, Wei LIU, Baoshan LIANG, Zhigang LIANG, Dongli JU, Xionghua CUI, Zheyi YANG, Yanjun LYU, Rui SHI. Creep rupture residual life prediction method of 2.25Cr-1Mo considering reliability evaluation[J]. Thermal Power Generation, 2023 , 52 (12) : 157 -163 . DOI: 10.19666/j.rlfd.202304044
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Year 2023 volume 52 Issue 12
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doi: 10.19666/j.rlfd.202304044
  • Receive Date：2023-04-23
  • Online Date：2026-01-26
  • Published：2023-12-25
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  • Received：2023-04-23
Affiliations
    1.Huadian Energy Co. Ltd. Fulalji Power Plant, Qiqihar 161041, China
    2.Xi’an Thermal Power Research Institute Co., Ltd., Xi’an 710054, China
    3.School of Mechanical and Precision Instrument Engineering, Xi’an University of Technology, Xi’an 710048, China
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https://castjournals.cast.org.cn/joweb/rlfd/EN/10.19666/j.rlfd.202304044
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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