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中文摘要: 本文介绍了 9F. 03型燃气轮机排气系统出现排气扩压器外保温层脱落、非金属膨胀节破损和法兰连接螺栓断裂问题，通过对机组运行特点及设备结构分析找到了故障原因，并对扩压器外保温层、非金属膨胀 节改造，同时更换材质合格的法兰连接螺栓，取得良好效果，提高了机组的安全性。
Abstract:Exhaust system of the gas turbine whose having the external insulation of the exhaust diffuser falling off，the damage of the non-metallic expansion joint and flange bolt fracture problem were introduced.By analyzing the operation characteristics of the unit and the structure of the equipment，the cause of failure was found out，and the difuser outer insulation layer and non-metallic expansion joint were remolded， at the same time material qualified flange bolts were replaced.It achieved good effect，which improved the security of the unit.
keywords: 9F. 03 gas turbine insulation drop non-metal expansion joint damage transformation bolt fracture
文章编号： 中图分类号：TK478 文献标志码：
基金项目:
| Author Name | Affiliation |
| ZHANG Gong | Jinjiang Natural Gas Power Generation Co.，Ltd.，Fujian Jinjiang 362251，China |
引用文本：
作者.题名[J].刊名,出版年份,卷号(期号):起止页码.
[2]KIM K M, PARK J S, DONG H L, et al. Analysis of conjugated heat transfer, stress and failure in a gas turbine blade with circular cooling passages[J]. Engineering Failure Analysis, 2011, 18(4):1212-1222.
作者.题名[J].刊名,出版年份,卷号(期号):起止页码.
[2]KIM K M, PARK J S, DONG H L, et al. Analysis of conjugated heat transfer, stress and failure in a gas turbine blade with circular cooling passages[J]. Engineering Failure Analysis, 2011, 18(4):1212-1222.