超临界350MW电厂四大管道国产化应用分析

Analysis on the Localization Application of the Four Major Pipelines of Supercritical 350MW Power Plant

目前超临界机组四大管道采用进口产品带来的一系列问题,如价格昂贵,采购周期长,管道制造过程质量无法监督控制,造成电厂基建费用增加,建设周期长,现场安装前检验发现诸多质量缺陷等。通过对国内钢厂所生产的四大管道化学成分、性能指标分析及调研已应用国产化四大管道情况,为某350MW电厂机组四大管道国产化提出建议。

At present, the four major pipelines of supercritical unit adopt imported product, which brings a series of problems, such as high cost, long purchasing cycle, lack of supervision and control of the pipe manufacturing quality, causing increase of power plant construction costs, long construction period, quality defects before site installation inspection, etc. Through analysis of the chemical composition and performance index of the four major pipelines manufactured by domestic steel mills and survey of the condition of domestically manufactured four major pipelines, this paper provides advice for the localization of four major pipelines for a 350 MW power plant unit.