汽轮机轴瓦乌金碾压损坏事故分析

FAILURE ANALYSIS OF STEAM TURBINE'S BEARING PAD DAMAGE

焦作市化工总厂 1台 3MW机组因调节汽门卡涩 ,使机组超载而振动 ,导致支承轴瓦乌金在润滑系统正常的情况下发生了典型的乌金碾压损坏事故。对事故的经过、设备损坏情况作了介绍 。

Vibration under overload condition had occurred due to the governing valve doesn't work smoothly on a 3000KW unit in Jiaozuo General Chemical Plant, Henan Province, leading to typical failure of bearing pad damage caused by rolling compaction while the lubrication system of back-up bearing pad was in normal condition. The course of failure and status of equipment damage are presented, and countermeasures for preventing such failures are given.