大中型水内冷汽轮发电机允许断水时间的探讨

Discussion on Allowable Time of Cooling Water Interruption of Large and Middle Sized Internal Water C ooled Generators

通过水内冷汽轮发电机断水时发热工况的计算和分析,得出机组断水时不停机运行时间,按制造厂家及有关规定有较大裕度,建议在加强监视、降低负荷运行的情况下,可以适当延长机组断水运行时间,以便查找故障和采取措施,从而减少机组启停次数。

Through calculation and analysis of heat conditions of internal water colded turbo-generator, it is found that operating time after cooling water interruption can be longer than that specified by manufactures. It is recommended that the operation time with reduced load can be longer after loss of cooling water, so as to use the affluent time interval for trouble-shooting without shut down the unit.