125 MW机组可调式汽封改造  

125 MW TURBINE UNIT MODIFIED WITH AJUSTABLE SEALING

作　　者：周华庆 唐旭乙 

机构地区：[1]遵义发电厂,贵州遵义563000

出　　处：《热力发电》2001年第1期55-56,共2页Thermal Power Generation

摘　　要：遵义发电厂 8号汽轮机为上海汽轮机厂生产的A151型超高压、中间再热式汽轮机 ,1992年8月投产。 1997年 7月在第二次大修中引进了美国布莱登可调式汽封 ,对其高、中压汽封及叶顶汽封进行改造。经过运行实践证明 :可调式汽封有效地防止了汽轮机开机过程中可能产生的动静摩擦 ,避免了由此产生的大轴弯曲 ,提高了汽轮机的热效率 ,降低了煤耗。Unit No.8 of Zhunyi power plant is a superpressure reheat turbine(A151) manufactured by Shanghai Turbine Works,which was commissioned in August 1992.Its h.p.and m.p.sealing glands and blade tip sealing were modified with an American adjustable sealing.It has been approved by operation that.with this kind of American sealing,the friction between moving and stationary parts of turbine during start-up can be prevented,thus avoiding shaft bending and improving trubine effciency.

关 键 词：汽轮发电机组 可调式汽封 技术改造 轴承 

分 类 号：TM311[电气工程—电机] TK263.1[动力工程及工程热物理—动力机械及工程]