文档介绍：哈电660MW型发电机氢气内漏分析
处理及防范措施
刘雪飞解峰吴圣旺
(神华河北国华沧东发电有限责任公司河北沧州 061113)
The Analysis and preventive measures of Hydrogen Internal Leakage of HEC 660MW Class Generator.
LIUXUEFENG XIEFENG WUSHENGWANG
(SHENHUA HEBEI GUOHUA CANGDONG POWER GENERATION HEBEI CANGZHOU)
ABSTRACT:Hydrogen cooling system is used in most Large-capacity generators. At the same time, water and hydrogen can be used together. Hydrogen leakage is a special problem during the operation of large-capacity generator. Plentiful hydrogen leakage not only increases the cost of generator operation, but also influences the safety of generator itself. When the hydrogen leak out, it could be called external leakage. Hydrogen can leak out from the joint face, shaft seal , the connector of hydrogen and oil circuit pipe, welded joint, etc. External leakage can be checked by using the portable leak detector and soap bubble, which it can be treated during the operation. When the hydrogen leaks into the internal-water-cooling system, water-cooling system of hydrogen cooler, return oil system of gas-side seal oil , all of them are called internal leakage. It’s hard to find internal leakage and it can’t be treated during operation. It is also a major potential for safe operation. During the operation of the two 660MW class HEC generators which are installed in the phase II project of Cangdong Power Plant, more hydrogen l