CAJ | 학술논문

船用燃气轮机运行在高速、高湿和高盐的工作环境中时，其气路部件在运行过程中发生故障的可能性增大，开展典型气路故障诊断技术研究有助于提升船用燃气轮机运行的可靠性和安全性。通过分析船用燃气轮机积垢、压气机叶顶间隙增大、叶片磨损、机械损伤、涡轮热腐蚀和燃烧室故障等典型气路故障的机理，给出9种典型气路故障时性能参数相对变化的经验判据。采用小偏差建模方法，建立船用三轴燃气轮机气路故障仿真模型，基于经验判据对0.8工况下船用三轴燃气轮机典型气路故障进行模拟，仿真得到9种典型故障下测量参数的相对变化。提出基于聚类分析的船用燃气轮机气路故障诊断方法，并以9种典型气路故障仿真结果为例，验证了该诊断方法的可行性。
선용연기륜궤운행재고속、고습화고염적공작배경중시，기기로부건재운행과정중발생고장적가능성증대，개전전형기로고장진단기술연구유조우제승선용연기륜궤운행적가고성화안전성。통과분석선용연기륜궤적구、압기궤협정간극증대、협편마손、궤계손상、와륜열부식화연소실고장등전형기로고장적궤리，급출9충전형기로고장시성능삼수상대변화적경험판거。채용소편차건모방법，건립선용삼축연기륜궤기로고장방진모형，기우경험판거대0.8공황하선용삼축연기륜궤전형기로고장진행모의，방진득도9충전형고장하측량삼수적상대변화。제출기우취류분석적선용연기륜궤기로고장진단방법，병이9충전형기로고장방진결과위례，험증료해진단방법적가행성。
When a marine gas turbine works in a high speed, high humidity,and highly salty environ-ment,the gas path components of the turbine are more likely to fail during operations;therefore, it is often essential to analyze the typical gas path failure mechanism and the corresponding diagnostic techniques in order to improve the reliability and safety of marine gas turbine's operation. The typical gas path failure, usually resulted from the fouling,compressor blade tip clearance increasing,blades wear,mechanical damage,turbine hot corrosion,and combustor failure is analyzed,and the empirical judgment for the rela-tive performance parameter is also given for nine typical gas path faults. The gas path faults simulation mod-el is then established based on the small deviation method,and typical gas path faults are simulated under the 0.8 operation condition,using a three-shaft marine gas turbine. Finally,a gas path fault diagnosis method for the turbine is introduced based on the clustering analysis technology,which is further validated through simulation tests.