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淮北发电厂~#5、~#6机组是东方汽轮机厂生产的D_(05)型N200-130/535/535型汽轮机组。其主油泵、调速油泵布置在前轴承箱中,经齿轮联轴器由汽轮机主轴驱动。投产后两台机组在运行中增减负荷或启停时,曾多次出现因齿轮联轴器工作异常,汽轮机主轴带着主油泵转子一起前后窜动,造成主油泵、调速油泵叶轮等部套单侧或双侧严重磨损,导致一次油压突降而引起事故停机。经认真分析计算,找出了联轴器故障原因,进行初步改进,取得了良好的效果。
Huaibei Power Plant ~ # 5, ~ # 6 unit is the D_ (05) type N200-130 / 535/535 turbine produced by Dongfang Steam Turbine Works. The main oil pump, speed control oil pump arranged in the front bearing box, driven by the turbine shaft gear coupling. After the operation of two units put into operation during the increase or decrease the load or start and stop, there have been many due to abnormal work gear coupling, the main shaft with the main steam turbine rotor back and forth, causing the main pump, governor pump impeller and other ministries One or both sets of serious wear and tear, resulting in a hydraulic dip and cause an accident downtime. After careful analysis and calculation to find out the cause of the coupling failure, the initial improvement, and achieved good results.