在修理上世纪90年代俄罗斯制造的发电用АД-31СТ燃气轮机时,发现该燃气轮机80%左右的中央传动供油孔存在不同程度的磨损,且随着使用时间的增长磨损逐渐增加,进而导致密封失效后滑油泄露,影响燃气轮机的安全和可靠工作。因缺乏设计资料和修理技术文件,对其结构进行重新研究,并对密封结构进行设计计算,找出了易发生滑油泄露的磨损量值,制订了加衬套进行修复的工艺方法。 When repairing the Russian-made АД-31СТ gas turbine made in Russia in the 1990s, it was found that about 80% of the central drive oil supply holes of the gas turbine were worn to different extents, and wear gradually increased as the service life increased, leading to seal failure After the oil leak, affecting the gas turbine safety and reliable work. Due to the lack of design data and technical documents for repair, the structure was re-studied, and the seal structure design and calculation to find out the amount of wear and tear prone to oil leakage, developed by adding bushing repair process.