风速和浮盘上浮高度对外浮顶油罐密封圈最易泄漏位置的影响  

Influence of Ambient Wind Speed and Floating Height of Floating Plate on the Maximum Leakage Position of Sealing Ring of External Floating Roof Tank

作　　者：罗炜超 夏威 张思琪 李鸿泰 谈金祝[1] LUO Weichao;XIA Wei;ZHANG Siqi;LI Hongtai;TAN Jinzhu(School of Mechanical and Power Engineering,Nanjing Tech University,Nanjing Jiangsu 211816,China)

机构地区：[1]南京工业大学机械与动力工程学院,江苏南京211816

出　　处：《润滑与密封》2025年第4期135-143,共9页Lubrication Engineering

基　　金：江苏省研究生科研与实践创新计划项目(SJCX21_0527)。

摘　　要：外浮顶油罐的环形密封圈在环境风速和浮盘上浮高度变化的影响下,可能会发生密封圈最易泄漏位置变化,导致密封性能下降,造成油气泄漏等安全隐患。以某石化公司一台20 000 m^(3)外浮顶油罐为研究对象,通过数值模拟方法,分析4种风速(2、4、6、8 m/s)和3种浮盘上浮高度(5、10、15 m)下的密封圈最易泄漏位置,并通过实验验证数值模拟结果的正确性。结果表明:环境风速大小对于密封圈最易泄漏点位置影响较小,但风速增加会造成密封圈环向压差逐渐加大;浮盘上浮高度增加可使密封圈最易泄漏点处的风向夹角逐渐减小,且能够使得密封圈环向压差逐渐减小。数值模拟和实验结果均表明,浮盘位于10 m高度且风速为4 m/s时的密封圈油气最易泄漏位置为风向夹角45°。研究结果可为降低外浮顶油罐生产安全隐患提供理论依据。Under the influence of ambient wind speed and floating height of floating plate,the maximum leakage position of the sealing ring of the external floating roof tank may change,resulting in the deterioration of the sealing performance,as well as oil vapor leakage and other security risks.A 20000 m'external floating roof tank of a petrochemical company was taken as the research object,and the maximum leakage positions of sealing rings at four wind speeds(2 m/s,4 m/s,6 m/s and 8 m/s)and three floating heights(5 m,10 m and 15 m)were analyzed.The correctness of the numerical simulation results was verified by experiments.The results show that the ambient wind speed has little influence on the position of the maximum leakage point of the sealing ring,but an increase in wind speed will cause the circumferential pressure difference of the sealing ring to gradually increase.An increase in the floating height of the floating plate can gradually reduce the angle of wind direction at the maximum leakage point of the sealing ring,and can also gradually reduce the circumferential pressure dfference of the sealing ring.Both the numerical simulation and experimental results show that when the floating plate is located at a height of 10 m and the wind speed is 4 m/s,the maximum oil vapor leakage position of the sealing ring is 45°of wind direction angle.The research results provide theoretical basis for reducing the safety hazards in the production of external floating roof tank.

关 键 词：外浮顶油罐 密封圈 浮盘 环境风速 泄漏 

分 类 号：TB42[一般工业技术] TE85[石油与天然气工程—油气储运工程]