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渔子溪电站共装4台高水头混流式发电机组。第一台机组自一九七二年十月投产发电以来,一直存在推力头与大轴配合松动,使得机组在运行中的振动和摆度问题比较突出。曾考虑到平衡块(第一、二台机组系平衡块式推力结构)在盘车时止动处理不十分奏效而对盘车数据的影响,每次大修盘车时几乎都存在盘车时间长(一般情况下7～10天)、次数多(一般情况下40～60次)而且无规律性。如该机组一九八三年十二月第六次大修盘车达61次,实测数据每次各异,虽经多次刮研推力绝缘垫、平衡块止动等措施仍无济于事。最终因工期所迫,不得不采用概率统计的概念选取盘车结果作为调整各轴承间隙的依据。大修完毕后开机运行,电测各部最大摆度点与盘车结果几乎相反,且
Yuzi Creek Power Station installed a total of four high-head Francis generator sets. Since the first generating unit was put into operation in October 1972, there has been a loosening of the thrust head and the large shaft so that the vibration and swing of the generating unit are prominent. Considered the balance block (the first and second units balance block thrust structure) in the car when the stop processing is not very effective on the data on the car, each overhaul car when there is almost all the long time (Usually 7 to 10 days), the number of times (under normal circumstances 40 to 60 times) and no regularity. If the crew overhaul the car for 61 times in the sixth overhaul in December 1983, the measured data will vary from one time to the next. Eventually forced by the duration, had to use the concept of probability statistics to select the crank results as the basis for adjusting the bearing clearance. After overhauling the boot operation, measuring the maximum swing point of each ministries and crank results are almost the opposite, and