浙江电力
浙江電力
절강전력
Zhejiang Electric Power
2015年
9期
50-52
,共3页
胡洲%吴文健%樊印龙%顾正皓%吴瑞康
鬍洲%吳文健%樊印龍%顧正皓%吳瑞康
호주%오문건%번인룡%고정호%오서강
600 MW%汽轮机%高压主汽阀%轴承温度%单侧进汽
600 MW%汽輪機%高壓主汽閥%軸承溫度%單側進汽
600 MW%기륜궤%고압주기벌%축승온도%단측진기
600 MW%steam turbine%high-pressure main steam valve%bearing temperature%unilateral ad-mission
针对某600 MW机组在启动过程中出现的1号轴瓦温度偏高问题，对汽轮机进行转子汽流受力分析以及关阀、升负荷等一系列试验，检查分析后，判断出汽轮机的左侧进汽通流面积产生了变化，并据此判断对汽轮机左侧进汽通流区域有关阀门和管道等进行了检查，查明了导致1号轴瓦温度偏高的原因为1号高压主汽阀主阀蝶脱落，造成汽轮机单侧进汽。对主阀蝶脱落及相关问题进行了分析，并提供了运行建议。
針對某600 MW機組在啟動過程中齣現的1號軸瓦溫度偏高問題，對汽輪機進行轉子汽流受力分析以及關閥、升負荷等一繫列試驗，檢查分析後，判斷齣汽輪機的左側進汽通流麵積產生瞭變化，併據此判斷對汽輪機左側進汽通流區域有關閥門和管道等進行瞭檢查，查明瞭導緻1號軸瓦溫度偏高的原因為1號高壓主汽閥主閥蝶脫落，造成汽輪機單側進汽。對主閥蝶脫落及相關問題進行瞭分析，併提供瞭運行建議。
침대모600 MW궤조재계동과정중출현적1호축와온도편고문제，대기륜궤진행전자기류수력분석이급관벌、승부하등일계렬시험，검사분석후，판단출기륜궤적좌측진기통류면적산생료변화，병거차판단대기륜궤좌측진기통류구역유관벌문화관도등진행료검사，사명료도치1호축와온도편고적원인위1호고압주기벌주벌접탈락，조성기륜궤단측진기。대주벌접탈락급상관문제진행료분석，병제공료운행건의。
Aiming at overheat of #1 bearing during startup of 600 MW units, the steam flow stress of rotor is analyzed, and test, check and analysis on valve shutdown and load rising are conducted, from which it is de-termined that inlet throughflow area at the left of steam turbine becomes changed. According to the judgment, the concerned valves and pipes at the left side of the turbine inlet throughflow area are inspected. It is found that overheat of #1 bearing is triggered by drop of main butterfly valve of #1 high-pressure main steam valve, which further causes unilateral admission. The paper analyzes main butterfly valve drop and relevant issues;besides, it puts forward suggestions on operation.
