热力发电2025，Vol.54Issue(10)：168-174,7.DOI:10.19666/j.rlfd.202501030
管道径向水平支撑板限位支架设计问题分析与改进
Design issues of radial horizontal support plate limiting brackets of pipes:analysis and improvement
摘要
Abstract
With the increase in parameters and capacity of newly built coal-fired units,the expansion of critical long-distance and large-diameter pipelines due to high parameters becomes more significant,making the design of supports and hangers particularly important.In a case involving a 2×660 MW ultra-supercritical unit,the diagonal brace of a rigid hanger tripod supporting the main steam pipeline buckled,resulting in a pipeline subsidence of nearly 130 mm.A comprehensive inspection of the pipeline supports and hangers was conducted,along with mechanical analysis of the statically indeterminate tripod structure and stability analysis of the diagonal brace.The study concluded that the failure of the diagonal brace and the pipeline sinking were primarily caused by an incorrect design of the radial horizontal restraint gap.Additionally,the excessive constant force of the constant hanger also contributed to the damage of the diagonal brace.This research not only analyzed the design flaws of the pipeline supports and hangers,but also proposed an engineering solution to optimize the restraint gap,which was validated on-site.A rectification plan involving horizontal limit adjustment and pipeline lifting was developed and implemented,successfully restoring the pipeline to its designed state and resolving the issue.This problem is highly representative in the construction of large-scale power units and should draw the attention of designers to avoid similar issues in future projects.关键词
管道/三角架/斜撑屈曲/径向水平限位/间隙Key words
pipe/tripod/sway rod bending/radial horizontal restraint/gap引用本文复制引用
吴晓俊,王聪,康豫军,刘鸿国,陈旭东,董雷,任延南,王建,李楠林..管道径向水平支撑板限位支架设计问题分析与改进[J].热力发电,2025,54(10):168-174,7.基金项目
中国华能集团有限公司总部科技项目(HNKJ22-H103)Science and Technology Project of China Huaneng Group Co.,Ltd.(HNKJ22-H103) （HNKJ22-H103）
