核电站凝汽器真空泵齿轮箱更换改造

The extraction pump gearbox modification in nuclear power plant

主要分析大亚湾核电站百万千瓦级压水堆核电站凝汽器真空泵的齿轮箱故障原因,对齿轮箱进行改造来消除故障隐患。采用的分析方法是设计选型校核法,结果发现齿轮箱无法满足机械强度和散热要求。通过重新选型计算后,选用新型的减速箱进行更换改造后,效果良好。

The article gives the root reason of gearbox leakage oil and gear destroying.The type of gearbox can't meet the requirement of the mechnial stress and heat emanation by the choosing type calculation.After FLENDER H1SH5 type gearbox replaced old one,new gearbox is operating in good contion.