350MW 汽轮发电机组轴承振动不稳定的分析及处理

摘要

During start up of water-hydrogen-hydrogen cooled generator for the 350MW supercritical steam turbine unit, the bearing shafts in the 5th and 6th generators demonstrated continuous increasing vibration in operation speed of 3000r/min.Through analysis and reasoning, effective treatment measures were formulated and implemented, ensuring each bearing vibration unit in good level in startup and operation periods.%此次分析论证的机组为350MW超临界汽轮机配套的水氢氢冷发电机，在机组首次启动过程中出现发电机5号、6号轴承轴振动在3000 r／min时持续增大无法稳定的现象。通过分析论证，制定了行之有效的处理措施，并进行实施，保证了机组各轴承振动在启动、带负荷等各阶段处于良好水平。