乌克兰UGT25000燃气轮机试验运行经验及技术改进措施

Trial Run Experience of Ukraine-made UGT25000 Gas Turbine and Technical Measures Taken for Their Improvement

UGT25000燃气轮机是由乌克兰研制的新型工业型燃气轮机，研制的2号机组于1995年11月-2001年6月在乌克兰“索菲亚”天然气增压站进行了工业试验运行。本文介绍了该机组的试验运行情况，在累计运行的25000h时间内，机组在低压压气机、低压涡轮和动力涡轮处出现了轴承损坏、裂纹等严重故障现象，说明机组在原型结构设计中存在一定的缺陷，可靠性达不到设计要求。为此在结构上进行了改进的设计，使得机组的使用寿命和可靠性有了较大的提高。这些措施在后续建造的机组中得到了应用。

UGT25000 gas turbine is a new type of industrial gas turbine developed by Ukraine. No.2 Unit developed by Ukraine had undergone an industrial trial run from Nov. 1995 to June 2001 at “Sofia' natural gas supercharging station in Ukraine. The authors have described the trial run conditions of the unit. During the accumulative operation totalling 25000 hours, serious faults had occurred to the unit, such as bearing damage and cracks etc. at the location of low pressure compressor, low pressure turbine and power turbine. This indicates that there exist certain defects in the structural design of the prototype and the engine reliability has failed to meet the design requirements. To cope with the above, some modifications for improving the structural design have been made, greatly enhancing the service life and reliability of the unit. These measures were implemented in the latterly fabricated units.