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Numerical Simulation of Flow Field Characteristics of Thrust Bearing by Oil Mist Discharge Device
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Xiong YANG1, Zhi-ping ZHANG1, Xu-yi PENG1, Zhong-hua WU1, Song-xiao ZHANG1, Sai NIE1, Jie SUN2, Yuan ZHENG3, Yu-quan ZHANG3
Water Resources and Power | 2023, 41(6) : 180 - 184
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Water Resources and Power | 2023, 41(6): 180-184
ELECTROMECHANICS AND CONTROL ENGINEERING
Numerical Simulation of Flow Field Characteristics of Thrust Bearing by Oil Mist Discharge Device
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Xiong YANG1, Zhi-ping ZHANG1, Xu-yi PENG1, Zhong-hua WU1, Song-xiao ZHANG1, Sai NIE1, Jie SUN2, Yuan ZHENG3, Yu-quan ZHANG3
Affiliations
  • 1.Jiangxi Hongping Pumped Storage Co., LTD, Yichun 330600, China
  • 2.College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China
  • 3.College of Energy and Electrical Engineering, Hohai University, Nanjing 210098, China
Published: 2023-06-25 doi: 10.20040/j.cnki.1000-7709.2023.20221237
Outline
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The escape of oil mist from bearing oil groove of power station will not only pollute the environment of power station, but also bring safety hazard to electrical equipment. Combined with the actual situation of hydropower station, the installation of oil mist absorption device can help to discharge excess oil mist from oil tank and effectively avoid the pollution problem of oil mist in power station. In order to investigate the variation of oil mist distribution, velocity, pressure at measuring points and discharge amount of oil mist in the oil tank, numerical simulation calculation of thrust bearing oil tank with negative pressure oil mist pipe was carried out. It is found that after complete oil mist discharged, most of the oil mist can be effectively discharged; The overall change of the amount of oil mist at the outlet follows the law of rising first and then falling. Under the suction pressure of -500 Pa, the maximum discharge amount of oil mist could reach 0.008 23 kg/s. After the oil mist is discharged, the pressure drop at the oil tank upper region reaches 96.07%, and the reduction of the pressure difference can effectively prevent the oil mist from escaping to the cover plate, the wind tunnel, the rotor and so on. The research can provide some theoretical help for the oil mist discharge process of oil tank so as to better formulate the oil mist control strategy.

oil mist diacharge  /  thrust bearing  /  numerical simulation  /  pumped storage power station  /  evaporation-condensation model
Xiong YANG, Zhi-ping ZHANG, Xu-yi PENG, Zhong-hua WU, Song-xiao ZHANG, Sai NIE, Jie SUN, Yuan ZHENG, Yu-quan ZHANG. Numerical Simulation of Flow Field Characteristics of Thrust Bearing by Oil Mist Discharge Device[J]. Water Resources and Power, 2023 , 41 (6) : 180 -184 . DOI: 10.20040/j.cnki.1000-7709.2023.20221237
Year 2023 volume 41 Issue 6
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Article Info
doi: 10.20040/j.cnki.1000-7709.2023.20221237
  • Receive Date:2022-06-13
  • Online Date:2026-01-28
  • Published:2023-06-25
Article Data
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History
  • Received:2022-06-13
  • Revised:2022-08-22
Funding
Affiliations
    1.Jiangxi Hongping Pumped Storage Co., LTD, Yichun 330600, China
    2.College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China
    3.College of Energy and Electrical Engineering, Hohai University, Nanjing 210098, China
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表12种不同金属材料的力学参数

Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)

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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