埋地含蜡原油热输管道修复中的安全保障  

Safety Problem of Heated Waxy Crude Oil Pipeline during In-line Rehabilitation

作　　者：王晓梅[1] 陈国群[1] 石蕾[1] 张峥[2] 赵子华[2] 张永盛[3] 

机构地区：[1]中国石油管道研究中心 [2]北京航空航天大学 [3]中国石油管道公司管道处

出　　处：《油气储运》2009年第3期49-52,共4页Oil & Gas Storage and Transportation

摘　　要：针对热输管道不停输修复中存在的主要安全问题,采用埋地热油管道热力水力计算方法确定了管道开挖修复的安全暴露长度。用在役含缺陷压力容器安全评定方法确定了最大允许悬空长度。利用开发的埋地热油管道开挖长度计算软件,实现了管道在任意工况、任意位置安全合理的暴露长度和悬空长度的计算,考虑多项影响因素的暴露长度和悬空长度兼顾了热油管道修复的安全性和经济性。应用弹性地基梁模型,在得到回填后管道弯曲应力分布的基础上,提出了保障回填后管道安全的措施,可以有效降低回填后管道的附加应力。To ensure the safety of heated waxy crude oil pipeline during in-line rehabilitation,allowable exposed length and impending length of the pipe will be respectively determined by using thermal and hydraulic calculation method for buried heated crude pipeline and safety assessment for in-service pressure vessels with defects.In this research,a software package is developed to compute the reasonable exposed length and the impending length of the pipeline in any position and operating condition,combined with its safety and economy in repairing.In addition,with the elastic foundation beam model,safety measures of backfilling with sand compacted are proposed based on the calculation of the pipe bending stress distribution after backfilling and thus reduce additional stress on pipeline after backfilling.

关 键 词：埋地热油管道 修复 安全保障 暴露长度 悬空长度 撼砂回填 

分 类 号：TE973.1[石油与天然气工程—石油机械设备] TU991.2[建筑科学—市政工程]