汽轮机技术
汽輪機技術
기륜궤기술
TURBINE TECHNOLOGY
2014年
6期
425-428
,共4页
盛伟%崔峰博%李子超%孟帅
盛偉%崔峰博%李子超%孟帥
성위%최봉박%리자초%맹수
中压缸%隔热罩%温度场%应力场%应力集中
中壓缸%隔熱罩%溫度場%應力場%應力集中
중압항%격열조%온도장%응력장%응력집중
pressure cylinder%shrouds%temperature field%stress field%stress concentration
600MW超临界汽轮机冷态启动过程中，经过汽轮机中压缸隔热罩的再热蒸汽温度由300℃升至538℃，压力从1MPa升至3．8MPa，所以避免隔热罩在这样不利的环境中受到损坏对于电厂来说是必要的。利用有限元分析软件绘制出中压缸隔热罩模型，接着分析冷态启动工况下温度场，应力场和综合应力场，找出所受到的应力最集中的部位，也就是启动中最危险的部位。
600MW超臨界汽輪機冷態啟動過程中，經過汽輪機中壓缸隔熱罩的再熱蒸汽溫度由300℃升至538℃，壓力從1MPa升至3．8MPa，所以避免隔熱罩在這樣不利的環境中受到損壞對于電廠來說是必要的。利用有限元分析軟件繪製齣中壓缸隔熱罩模型，接著分析冷態啟動工況下溫度場，應力場和綜閤應力場，找齣所受到的應力最集中的部位，也就是啟動中最危險的部位。
600MW초림계기륜궤랭태계동과정중，경과기륜궤중압항격열조적재열증기온도유300℃승지538℃，압력종1MPa승지3．8MPa，소이피면격열조재저양불리적배경중수도손배대우전엄래설시필요적。이용유한원분석연건회제출중압항격열조모형，접착분석랭태계동공황하온도장，응력장화종합응력장，조출소수도적응력최집중적부위，야취시계동중최위험적부위。
During the 600MW supercritical turbine startup process,the temperature of the reheat steam passing through the shrouds of pressure cylinder rises from 300℃to 538℃,and its pressure rises from 1MPa to 3.8MPa.So it’ s essential for Power Plant to avoid shrouds damaged under the bad settings.This article uses the finite element simulation analysis software to draw the model of the shrouds, and analysis its temperature field, stress field and comprehensive stress field under the conditions of cold startup.Finding out the part with the most concentrated stress,which is the most dangerous part during the whole startup.
