300 MW 汽轮机汽封改造及启动振动控制实践

Practice of Steam Seal Transformation and Turbine Start － up Vibration Control of 300 MW Steam Turbine

摘要:

国电深能四川华蓥山发电有限公司 31 号汽轮机汽封改造后，为保证汽封改造效果，详细分析了汽封间隙 对机组振动的影响，提出了机组在升速过程中以及运行中的振动控制措施，有力地确保了机组的顺利启动和带负 荷，有效地提高了机组的经济性，同时所提出的启动经验可供同类型机组参考。

Abstract:

In order to ensure the effect of steam seal transformation of No． 31 steam turbine of Sichuan Huayingshan Power Generation Co． ，Ltd． ，the influence of steam seal clearance on the vibration of steam turbine is analyzed in detail，and the vibration control measurements during speed － up and operation are put forward，which effectively ensures the smooth start － up and on － load of the unit． The economical efficiency of this unit is improved effectively，and the start － up experience can also be referred to the unit of the same type．