提高9FA燃机压气机可靠运行的措施

针对S109FA-SS燃气—蒸汽联合循环发电机组投运后发生的多起压气机故障及一级静叶断裂事故,分析了压气机的故障原因和工作机理,介绍了改进压气机进口可转导叶、优化可转导叶叶型、升级压气机软件包、改进0级动叶片、升级改造压气机等技术措施及实践经验,提高了压气机运行的可靠性;通过梳理定期水洗压气机在线用水清洗和离线喷射清洁剂注意事项和工艺流程,提高了压气机运行的经济性,同时指出要尽量减少机组的启停次数,尽可能地保持基本负荷连续运行,用以降低设备发生事故的风险。

Measures to Improve the Operation Reliability of the 9FA Gas Turbine Compressor

Since several S109FA-SS gas-steam combined cycle generating units have encountered compressor failures or S1 stator vane fracture accidents after they were put into operation,this paper analyzed the failure causes and working mechanism of the compressor,introduced some technical measures and practices to improve thecompressor running reliability by improving the compressor IGV(inlet adjustable guide vane),optimizing the IGV airfoil,upgrading the compressor software package,improving the R0 blades and upgrading the compressor;and to improve the compressor running economic efficiency by reviewing and sorting the precautions and processes of compressor regular wash including on-line water wash and off-line cleaning agent spraying.This paper also pointed out that it was very important to minimize the unit startup/shutdown times and maintain the unit continuous running at base load as far as possible so as to reduce the risk of equipment accident.