聚乙烯燃气管道老化评价方法研究进展分析
Research Progress Analysis of Aging Evaluation Methods for Polyethylene Gas Pipelines
刘长平 1王宏 2冯佳俊 2吴琳琳 1王强1
作者信息
- 1. 中国计量大学 杭州 310018
- 2. 湖州市特种设备检测研究院 湖州 313099
- 折叠
摘要
聚乙烯(PE)燃气管道随着铺设时间增长会逐步发生老化,因此应关注老化后管道的性能变化和安全评价.基于国内外研究文献和标准的调研,在介绍老化管道理化和力学性能测试及非线性超声无损检测方法的基础上,对4种PE管道寿命预测方法的优缺点进行了对比分析,简述了 PE管道老化程度评价方法.结果表明目前国内外的研究以人工加速老化试验和老化性能的测试及寿命预测为主,在对老化程度的无损检测方法和综合性评价方法方面的研究相对比较欠缺.探索综合利用非线性超声和微损型性能测试对PE管道老化程度进行评价,在燃气埋地管道老化的检测与评估方面具有广阔的应用前景.
Abstract
Polyethylene(PE)gas pipelines will gradually age with the increase of laying time,so attention should be paid to the performance changes and safety evaluation of the pipelines after aging.Based on research literature and standards both domestically and internationally,this paper introduces the physical,chemical,and mechanical performance testing of aged pipelines,as well as nonlinear ultrasonic non-destructive testing methods.Based on this,a comparative analysis of the advantages and disadvantages of four methods for predicting the lifespan of PE pipelines is conducted,and a brief description of the evaluation method for the degree of PE pipeline aging is provided.The results indicate that current research at home and abroad mainly focuses on artificial accelerated aging tests,aging performance testing,and life prediction.However,there is relatively little research on non-destructive testing methods and comprehensive evaluation methods for aging degree.Exploring the comprehensive use of nonlinear ultrasound and micro damage performance testing to evaluate the degree of aging of PE pipelines has broad application prospects in the detection and evaluation of aging in buried gas pipelines.
关键词
聚乙烯/管道老化/寿命预测/风险评估Key words
Polyethylene/Pipeline aging/Life prediction/Risk assessment引用本文复制引用
出版年
2024
NETL
NSTL
万方数据