X80钢级油气管道缺陷修复用B型套筒尺寸优化设计
Size optimization design of B-type sleeve for defect repair of X80 steel grade oil and gas pipeline
李猛 1周顺荣 1王克克 1李剑 1崔心昱 1汪珍 1李研 1刘鑫1
作者信息
- 1. 国家管网集团云南公司 昆明维抢修分公司,昆明 650000
- 折叠
摘要
针对国内外各标准对B型套筒的长度、厚度、安装间隙等参数要求不一,且B型套筒的设计尺寸缺乏相应的理论依据及试验数据等问题,利用模拟软件改变B型套筒参数并对比分析不同参数下套筒安装后的应力分布情况,发现B型套筒长度在200～800 mm范围内变化时,角焊缝上的应力水平随套筒长度增加而增大,且在大于600 mm时上升趋势明显;在地质不稳定地区考虑套筒承受内压和轴向载荷的情况下,套筒壁厚在17～21 mm范围内变化时,角焊缝处应力保持在相对较低水平;套筒安装间隙对角焊缝处应力影响较小,但随着套筒安装间隙的增加其角焊缝处轴向应变越大.根据分析结果试制套筒进行内压循环试验和弯曲试验,B型套筒在安装后未发现应力集中和焊缝延迟裂纹现象,对管道穿透性缺陷的修复效果良好.
Abstract
For the problems such as different requirements of domestic and foreign standards for the length,thickness,installation clearance and other parameters of B-type sleeve,and the lack of corresponding theoretical basis and experimental data on design size of B-type sleeve lacks,the simulation software was used to change the parameters of the B-type sleeve and compare and analyze the stress distribution after the installation of the sleeve under different parameters.It is found that when the length of the B-type sleeve changes in the range of 200～800 mm,the stress level on the fillet weld increases with the increase of the length of the sleeve,and the rising trend is obvious when it is greater than 600 mm.Considering the internal pressure and axial load of the sleeve in the geologically unstable area,when the thickness of the sleeve changes in the range of 17～21 mm,the stress at the fillet weld remains at a relatively low level;the installation gap of the sleeve has little effect on the stress at the fillet weld,but the axial strain at the fillet weld increases with the increase of the installation gap of the sleeve.According to the analysis results,the sleeve was trial-produced for internal pressure cycle test and bending test.No stress concentration and weld delay cracks were found in the B-type sleeve after installation,and the repair effect on pipeline penetrating defects was good.
关键词
油气管道/X80管道/B型套筒/Workbench仿真平台/优化设计Key words
oil and gas pipelines/X80 pipeline/B-type sleeve/Workbench simulation platform/optimization design引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据