1000MW超超临界机组四大管道的选材  

Design analysis of the Selection of the Four main pipelines of the 1000MW Ultra Supercritical Unit

作　　者：尹黔昊[1] 魏刚[2] 李涛[2] 

机构地区：[1]华北电力大学,河北保定071003 [2]天津国投津能发电有限公司,天津300480

出　　处：《天津电力技术》2009年第2期24-26,43,共4页Tianjin Electric Power Technology

摘　　要：主蒸汽管道、高温再热热段、低温再热冷段和高压给水管道等四大管道是发电厂锅炉的重要组成部分,管道材质的选择对于机组运行的安全性和经济性具有重要影响。天津国投津能发电有限公司(北疆电厂)1000MW超超临界机组的主汽压力为27.56MPa,主汽温度为605℃,对四大管道的机械特性和高温性能提出了很高要求。在考虑热应力、热膨胀系数、运行可靠性和经济等因素后,对主蒸汽管道、高温再热热段、低温再热冷段和高压给水管道的材质进行了论证和选择。Pipelines for the main steam, hot sections of the reheat steam, cold sections of the reheat steam and the high pressure feed water are main constitute of the power plant boiler. Material selection of the four main pipelines will have significant impact on the security and economy of the power plant operation. The pressure of the main steam of the 1000MW ultra supercritical unit in Tianjin SDIC Jinneng Electric Power CO. LTD is 27.56MPa, and the temperature of the main steam is 605℃. It brings forward the high requirement of the mechanical characteristic and high temperature performance of the four main pipelines. Demonstration is processed considering the thermal stress, coefficient of the heat expansion, operation reliability and the economy, and the compositions of the four main pipeline material are selected.

关 键 词：热能工程 选材 设计分析 超超临界机组 四大 管道 

分 类 号：TM621.72[电气工程—电力系统及自动化] TK242[动力工程及工程热物理—动力机械及工程]