350 MW超临界机组调试中存在的问题分析及处理

摘要

After analysis on shaft bearing buring,large shaft vibration,high temperature of low-pressure rotor bearing metal of No.1 unit during commissioning,this paper indicates that the main causes are worse shaft self-localization per-formance,the rub of the seal and the rotor,high design level of No.5 and No.6 shafts,proposes the settlements,such as replacement of the new bearing,turning parameter control, lowering bearing level,explains the settlements effects,and proposes the corresponding suggestions.%对1号机组在调试过程中出现的轴承烧瓦、轴振较大、低压转子轴承金属温度偏高等问题进行分析,认为轴承自定位性能较差,汽封与转子碰磨,5号、6号轴承设计标高偏高是故障的主要原因,提出更换新瓦,控制冲转参数,降低5号、6号轴承标高等处理措施,说明处理效果,并提出相应建议。