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Analysis and treatment of vibration of condenser pipe in ACC
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Guobin GAO1, 2, Xiaojun DU2, Yan ZHANG2, Feng GAO3, Bo XU1
Thermal Power Generation | 2023, 52(7) : 126 - 132
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Thermal Power Generation | 2023, 52(7): 126-132
• Intelligent management technologies for coal-fired power plants •
Analysis and treatment of vibration of condenser pipe in ACC
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Guobin GAO1, 2, Xiaojun DU2, Yan ZHANG2, Feng GAO3, Bo XU1
Affiliations
  • 1.School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 713599, China
  • 2.Jinjie Energy Co., Ltd. of CHN Energy, Yulin 719319, China
  • 3.Zhejiang Nuochen Environment Protection Company, Hangzhou 311100, China
Published: 2023-07-25 doi: 10.19666/j.rlfd.202304049
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Condensate downcomer vibration is a common phenomenon in the direct air cooling system, which endangers the safe operation of the air cooling system when the vibration is serious. The pipe vibration model is established based on the fluid solid coupling method. The two-phase flow characteristics of the condensate pipe are analyzed using the theory of flow induced vibration and fluid cavitation. The model analytical calculation and numerical simulation are carried out for the condensate pipe of a 660 MW ultra supercritical unit. The results show that saturated or nearly saturated condensate flows from the air cooling platform along the condensate downcomer to the hot well of the steam exhaust device by gravity flow. When the potential energy of water is released, two-phase flow excitation and cavitation phenomena occur. Based on this analysis, the causes of condensate vibration and cavitation noise are found, By using multi-stage Venturi tubes and porous orifice plates in the condensation water pipeline of the power plant to eliminate the condensate potential energy, avoid excessive pipeline vibration and noise, and eliminate the hidden danger of pipeline vibration.

condensation water  /  downcomer  /  flow induced vibration  /  two phases flow simulation  /  fluid cavitation
Guobin GAO, Xiaojun DU, Yan ZHANG, Feng GAO, Bo XU. Analysis and treatment of vibration of condenser pipe in ACC[J]. Thermal Power Generation, 2023 , 52 (7) : 126 -132 . DOI: 10.19666/j.rlfd.202304049
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Article Info
doi: 10.19666/j.rlfd.202304049
  • Receive Date：2023-04-11
  • Online Date：2026-01-26
  • Published：2023-07-25
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  • Received：2023-04-11
Affiliations
    1.School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 713599, China
    2.Jinjie Energy Co., Ltd. of CHN Energy, Yulin 719319, China
    3.Zhejiang Nuochen Environment Protection Company, Hangzhou 311100, China
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https://castjournals.cast.org.cn/joweb/rlfd/EN/10.19666/j.rlfd.202304049
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表12种不同金属材料的力学参数
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Family		 属数
Number of
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Number of
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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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