海上三相重力分离器晃荡试验研究  

Experimental Study on Sloshing of Offshore Three-Phase Gravity Separator

作　　者：郑晓鹏 张明 雷俊勇[2] 陈家庆[2] 毕晓鹏 王春升 Zheng Xiaopeng;Zhang Ming;Lei Junyong;Chen Jiaqing;Bi Xiaopeng;Wang Chunsheng(CNOOC Research Institute Co.,Ltd.;School of Mechanical Engineering,Beijing Institute of Petrochemical Technology)

机构地区：[1]中海油研究总院有限责任公司,北京市100028 [2]北京石油化工学院机械工程学院

出　　处：《石油机械》2024年第12期53-61,共9页China Petroleum Machinery

基　　金：国家自然科学基金面上项目“三相分离器内油水两相重力沉降机制与电场破乳协同分离性能研究”(52274059);中海油研究总院2021年度重点实验室自主研究课题“浮式生产装置分离器内部晃荡对性能影响及抑制措施研究”(2021KY-GC03-01)。

摘　　要：海上浮式生产储卸油装置FPSO摇摆导致油气水三相重力分离器液面发生晃荡,减弱了油水分离效果,在分离器内布置防晃板可抑制晃荡,但防晃板间距的确定目前尚无明确设计方法。为此,基于相似性理论,通过1∶9模型分离器试验,研究了防晃板及内构件对分离器晃荡的抑制与影响过程。研究结果表明:防晃板、聚结板、均流板、堰板等内构件之间的间距发生变化时,可削弱FPSO外部激励形成的界面共振;油水界面与外部激励之间的共振是分离器内部液体晃荡主要形式;各种开孔结构的内构件与聚结板可削弱界面晃荡的振幅;聚结板、均流板、防晃板和堰板之间液体区域界面固有周期可用基于线性理论的圆筒形容器计算公式估算。研究结果可为海上生产现场分离器的防晃设计提供技术参考。The sway of offshore FPSO causes fluid level of oil-gas-water three-phase gravity separator to slosh,which deteriorates the oil-water separation effect.Installing anti-sloshing baffle in the separator can suppress sloshing,but there is currently no clear design method for determining the spacing between anti-sloshing baffles.In this paper,based on the similarity theory,by means of 1∶9 model separator test,the suppression and influence process of the anti-sloshing baffles and internal components on the sloshing of the separator was studied.The results show that when the spacing between internal components such as anti-sloshing baffle,coalescing plate,uniform flow plate and weir plate changes,it can weaken the interface resonance formed by external excitation of FPSO.The resonance between the oil/water contact and external excitation is the main form of liquid sloshing inside the separator.The internal component and coalescing plate with various open porous textures can weaken the amplitude of interface sloshing.The natural period of the liquid area interface between the coalescence plate,uniform flow plate,anti-sloshing baffle and weir plate can be estimated using a cylindrical container calculation formula based on linear theory.The study results provide reference for the anti-sloshing design of separators at offshore production sites.

关 键 词：三相重力分离器 相似性分析 晃荡试验 内构件 油水界面共振 

分 类 号：TE868[石油与天然气工程—油气储运工程]