TC4F660MW机组轴封系统压力过高的原因分析及处理

Reason Analysis and Treatment of TC4F 660MW Unit Bearing-Sealing System's Pressure Overhigh

文章对美国通用电气 (GE)公司生产的TC4F660MW机组轴封系统特点进行了介绍 ,针对机组在试运过程中轴封系统存在的问题及供汽压力过高的现象和原因进行了全面的试验、分析和论述 ,对引起轴封供汽压力过高的 2 # 轴封管路及高调门门杆漏汽管路连接错误进行了更改处理 ,消除了机组隐患。使机组在满负荷 660MW运行中 ,轴封供汽母管压力维持在 0 .0 2 6MPa/ 2 84℃ 。

Through introducing TC 660MW unit bearing-sealing system's character which produced by American General Electric Co., aiming at the existing problem of bearing-sealing system and the phenomenon of supporting vapour pressure over high in the course of trying running the paper makes overall test, analysis and describing, and changes and deals with the mistake which causing 2 # bearing-sealing pipeline of bearing-sealing supporting vapour pressure over high and connecting mistake of high-pressure adjustment door's door pole leak the vapour pipeline, eliminates unit's hidden trouble, in order to Make the unit at full load 660MW operation, the pressure of bearing-sealing supporting vapour maintains at 0.026MPa/284℃.