摘要
介绍了华能高井热电厂1号、2号机组通流部分改造中,低压通流部分蜂窝式汽封的应用情况,其具体应用部位是低压前后轴封各4道、低压隔板汽封8道、次末级及次次末级叶顶汽封各2道。通过汽封改造,解决了低压前后轴封漏汽真空低问题,增强了叶顶汽封的去湿效果,提高了机组运行的经济性和安全性。
The application situation of honeycomb type steam seal gland in LP flow passage during the retrofit of flow passage for unit no.1 and 2 in Beijing Gaojing Thermal Power Plant has been presented.The concrete positions of application are as follows: four pieces for shaft seal gland before and after the low-pressure cylinder;eight pieces for steam seal gland of LP diaphragm;two pieces for blade top steam seal gland of the secondary final-stage and it's next final stage.Through retrofit of steam seal glands,the leakage problem of shaft seal gland before and after the LP cylinder,and the low vacuum problem have been solved,strengthening the dehumidifying effect of the blade top steam seal gland,heigtening the economic behavior and safety in operation of unit.
出处
《热力发电》
CAS
北大核心
2006年第10期49-51,共3页
Thermal Power Generation
关键词
110MW汽轮机
蜂窝式汽封
通流部分改造
轴封
真空度
隔板汽封
迷宫梳齿式汽封
110 MW steam turbine
honeycomb type steam seal gland
retrofit of the flow passage
shaft seal gland
vacuum degree
diaphragm steam seal gland
labyrinth comb-teeth type steam seal gland
