导致120kw柴油发电机组烧瓦的原因有哪些?

2025-04-08 06:43:34
推荐回答(1个)
回答1:

  1、没有正确选用润滑油。不同季节应使用不同牌号的润滑油。一些柴油发电机烧瓦,就是因夏季使用粘度小的润滑油,在轴瓦接触面上形成不了油膜所致。
  2、添加机油不适量。若机油过多,柴油发电机组运转时容易烧机油,形成积碳,若过少,则会因润滑不良而烧瓦抱轴。一般机油面处于油尺上下刻度之间最为适宜。
  3、润滑油不清洁。若将不清洁的润滑油加入机体内,就会堵塞油路造成烧瓦。
  4、轴与瓦的配合间隙不符合标准。间隙过小,机油不容易进入,形成不了油膜层,间隙过大,机油容易流失,油膜层也难以形成。因此在修理装配时,必须保证轴瓦间隙在标准范围内。
  5、长期超负荷而导致烧瓦。因长期超负荷作业,柴油发电机组温度高、转速低,轴瓦的承载力增加,机油泵供油量相应减少,加之机油在高温下粘度降低,更容易造成烧瓦。
  6、不注意观察仪表。柴油发电机正常工作时机油压力应在MPa之间,怠速运转机油压力不小于0.5MPa。许多机手很少注意看机油压力表,因而也不能及时发现故障隐患。
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