2000m超深水水下分离器承压结构强度分析  

Strength Analysis on Bearing Structure of Subsea Separator for 2000m Ultra Deepwater

作　　者：葛玖浩 李伟[1] 陈国明[1] 阮彩添[1] 张慎颜[1] 李秀美[1] 

机构地区：[1]中国石油大学(华东)海洋油气装备与安全技术研究中心

出　　处：《石油机械》2015年第2期60-64,69,共6页China Petroleum Machinery

基　　金：国家863计划项目"水下分离器关键技术研究"(2013AA09A213)

摘　　要：以2 000 m超深水卧式重力分离器承压结构为研究对象,依据分离器危险工况建立了参数化精细模型,探讨了分离器强度校核方法。在静力分析确定分离器局部危险位置的基础上,在危险位置对总体应力进行分析并参照压力容器相关标准的相应限制对各当量应力进行校核,计算了分离器的结构强度;分析了手孔壁厚、接管壁厚及支座形式等结构因素对分离器整体强度的影响。分析结果表明,增大手孔及接管厚度将会减小手孔及接管处应力,但对分离器其余部分应力基本无影响;当支座采用倾斜支撑形式时会产生巨大应力导致支座破坏,但塑性流动基本不会影响筒体应力场,支座形式对筒体强度基本无影响,设计分离器支座时应优先选用竖直支撑形式。A sophisticated parameterized model of the pressure-bearing structure of the 2 000 m nltra-deepwa- ter horizontal gravity separator is established based on the separator＇ s hazardous working conditions. The strength checking method of the separator is established. The hazardous parts of the separator are determined based on static force analysis. Then, the overall stresses of the separator are analyzed on the hazardous locations. Every equivalent stress is checked according to the corresponding limit of related pressure vessel standards. Thus, the structural strength of the separator is analyzed. Meanwhile, the effects of the structures like the hand hole wall thickness, pipe wall thickness and supporting seat on the separator overall strength are analyzed. The results show that increas- ing the thickness of the hand hole and the pipe could reduce stressed at the hand hole and the pipe but has little effects on the stress of the rest of separator. The tilt supporting seat will cause a huge stress resulting in supporting seat failure. The plastic flow basically has no effect on the cylinder stress field. The supporting seat form almost has no effect on the cylinder strength and the vertical supporting seat is preferred.

关 键 词：超深水 水下分离器 水下生产系统 应力分类 压力容器 强度分析 等效应力 

分 类 号：TE952[石油与天然气工程—石油机械设备]