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一、概述我厂~#2发电机自1966年投产以来,先后暴露出许多问题:定子线棒温度过高,定子铁芯温度分布不均匀,下机架处回风现象严重,空气冷却器效果较差等。这些缺陷使发电机绝缘强度下降,妨碍电机安全发电。为了摸索解决上述问题的方法,几年来,我厂曾对此台电机的通风系统进行了一系列改进试验,其中有:将转子支臂挡风板向中心延伸;将转子支管下部加宽,增加支臂的扇风作用;将热风口打开,开启发电机下盖板进冷风,使发电机敞开运行等。这些改进措施虽取得一些效果,但不显著。当电机带满负荷时,尤其
First, an overview of our plant ~ # 2 generator put into operation since 1966, has exposed many problems: Stator bar temperature is too high, the stator core temperature distribution is not uniform, the return air under the rack at a serious phenomenon, the air cooler effect Poor and so on. These defects reduce the insulation strength of the generator and prevent the motor from generating safely. In order to explore ways to solve the above problems, our factory has carried out a series of improvement tests on the ventilation system of this motor in recent years, including: extending the rotor arm windshield to the center; broadening and expanding the lower part of the rotor branch pipe The arm of the fan effect; the hot air opening, open the generator under the cover into the cold, so that the generator is running open and so on. Although these improvements have achieved some results, they are not significant. Especially when the motor is at full capacity