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Comparative study on steady performance and heating mode of supercritical CO2 hydrostatic-dynamic dry gas seal
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Jinbo JIANG1, Peng JIANG1, Xudong PENG1, Jian PENG2, Xianzhi HONG2, Daquan TANG2
Thermal Power Generation | 2023, 52(11) : 46 - 56
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Thermal Power Generation | 2023, 52(11): 46-56
• Special topic on supercritical carbon dioxide cycle power generation technology •
Comparative study on steady performance and heating mode of supercritical CO2 hydrostatic-dynamic dry gas seal
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Jinbo JIANG1, Peng JIANG1, Xudong PENG1, Jian PENG2, Xianzhi HONG2, Daquan TANG2
Affiliations
  • 1.Zhejiang University of Technology, Mechanical Engineering College, Hangzhou 310014, China
  • 2.Chengdu Yitong Seal Co., Ltd., Chengdu 610100, China
Published: 2023-11-25 doi: 10.19666/j.rlfd.202302013
Outline
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For enhancing the film stiffness of supercritical CO2 (S-CO2) hydrodynamic dry gas seal and reducing the additional power consumption due to the installation of heater in the seal inlet line, a new structure of S-CO2 hydrostatic-dynamic dry gas seal with the heating of the ring body at the back of the static ring is proposed. Based on the conjugate heat transfer model, the pressure and temperature distribution of dry gas seal were simulated utilizing commercial software Fluent. The steady-state performance and flow field distribution of S-CO2 hydrodynamic seal, hydrostatic seal and hydrostatic-dynamic seal were compared and analyzed, and the flow and heat transfer characteristics and power consumption of S-CO2 hydrostatic-dynamic dry gas seals under different heating modes and heat temperatures were discussed. The results show that the film stiffness of the hydrostatic-dynamic dry gas seal is improved more than doubled compared with the hydrodynamic dry gas seal, while the leakage rate increased significantly by 35% at the same time. The power consumption under ring heating mode is 44% lower than that under direct gas heating mode, leading to better operating economy. It provides a new idea for the structure design and auxiliary system improvement of compressor dry gas seal in S-CO2 power generation system.

supercritical carbon dioxide  /  dry gas seal  /  heating mode  /  film stiffness
Jinbo JIANG, Peng JIANG, Xudong PENG, Jian PENG, Xianzhi HONG, Daquan TANG. Comparative study on steady performance and heating mode of supercritical CO2 hydrostatic-dynamic dry gas seal[J]. Thermal Power Generation, 2023 , 52 (11) : 46 -56 . DOI: 10.19666/j.rlfd.202302013
Funding
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  • National Natural Science Foundation of China(52075491; 52076195)
  • Natural Science Foundation of Zhejiang Province(LD21E050002)
Appendix
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Year 2023 volume 52 Issue 11
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126
52
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Article Info
doi: 10.19666/j.rlfd.202302013
  • Receive Date：2023-02-02
  • Online Date：2026-01-26
  • Published：2023-11-25
Article Data
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History
  • Received：2023-02-02
Funding
National Natural Science Foundation of China(52075491; 52076195)
Natural Science Foundation of Zhejiang Province(LD21E050002)
Affiliations
    1.Zhejiang University of Technology, Mechanical Engineering College, Hangzhou 310014, China
    2.Chengdu Yitong Seal Co., Ltd., Chengdu 610100, China
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https://castjournals.cast.org.cn/joweb/rlfd/EN/10.19666/j.rlfd.202302013
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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
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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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