采用氢气冷却的汽轮发电机必须由密封油对其端部进行密封,既保证发电机内部氢气不外泄,防止空气和潮气进入发电机。汽轮发电机,其密封油系统采用双流环式密封瓦结构,密封效果好,调节范围宽,是非常成熟的产品。但是如果对其结构不甚了解,操作不当也可能造成发电机内部进油事故。特别是在发电机内部无压的情况下,密封油箱油位不易控制,密封油极易沿轴向进入发电机内部。发电机内部进油是恶性事故,应该引起高度的重视。下面就对发电机密封油系统,发电机内部进油原因及防范措施做以介绍。
发电机密封油系统的作用是为了防止外界空气进入发电机内部及阻止发电机内氢气漏出。
Generator sealing oil system is designed to prevent outer air from entering the generator and avoid leakage of hydrogen from the generator.
目前采用的发电机密封油系统,由于种种原因,运行不稳定,有时还会激发系统的耦合震荡,导致发电机进油、漏氢等后果。
The coupling oscillation will be excited occasionally and will result in changing oil between air side and hydrogen side, or result in the hydrogen escape from the inside of generator, etc.
文中对模糊建模方法进行了研究,并对汽轮发电机密封油冷却系统进行了模糊建模,取得了满意的结果。
After a study of the fuzzy model creation method the authors constructed a fuzzy model for a turbogenerator seal oil cooling system with satisfactory results being attained.
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