悬吊式水轮发电机一般是在镜板与推力头之间加装一层绝缘垫,采取修刮绝缘垫的方法来调整机组的轴线,减小机组的振动和摆度。如果绝缘垫材料采用不当时,随着机组运行时间的增长,绝缘垫将遭到破坏,机组的轴线就会随之而破坏,从而使机组振动增加,降低机组稳定运行的可靠性。长滩电站四台单机容量1600kw的悬吊式水轮发电机组,自1966年投产运行以来, Suspension hydrogenerator is generally between the mirror plate and the thrust head to install a layer of insulation mat, take scratch repair insulation pad method to adjust the axis of the unit, reducing unit vibration and swing. If the insulation mat material is improperly used, as the unit running time increases, the insulation mat will be destroyed, and the axis of the unit will be destroyed. As a result, the vibration of the unit increases and the reliability of the unit stable operation can be reduced. Longtan Hydropower Station four stand-alone capacity of 1600kw hanging hydro-generating units, put into operation since 1966,