中国民航大学学报

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PW4000 系列发动机高压涡轮失效分析与预防

张雪洋,王伟   

  1. (中国民航大学工程技术训练中心,天津 300300)
  • 收稿日期:2015-01-04 修回日期:2015-03-26 出版日期:2015-08-22 发布日期:2015-09-24
  • 作者简介:张雪洋(1981—),男,天津人,助教,硕士,研究方向为航空发动机控制.
  • 基金资助:

    国家自然科学基金项目(11304380)

Failure analysis and prevention of high pressure turbine in PW4000 engine

ZHANG Xue-yang,WANG Wei   

  1. (Engineering and Techniques Training Center,CAUC,Tianjin 300300,China)
  • Received:2015-01-04 Revised:2015-03-26 Online:2015-08-22 Published:2015-09-24

摘要:

对某飞机维修企业所负责的在役PW4000系列航空发动机失效数据统计分析表明,该型发动机高压涡轮的失效位置主要集中在高压涡轮转静子叶片及封严上,失效形式主要表现为烧蚀、裂纹、腐蚀、涂层脱落、封严损伤和叶片伸长等。本研究在统计分析的基础上对上述失效形式的现象和机理进行了总结及分析,并提出了相应的处理方法。

关键词: 高压涡轮, 失效, 预防, 裂纹, 损伤, 腐蚀

Abstract:

Failure statistical analysis data of PW4000 engine in service is carried on in an aircraft maintenance enterprise.Results show that the failure positions of PW4000 engine high pressure turbine mainly concentrate on high pressure turbine blades,vanes and seal;main failure modes are ablation,crack,corrosion,coating shedding,seal damage and blade elongation. On the basis of the statistical analysis,the phenomena and mechanisms of failure modes are summarized and analyzed and the corresponding processing methods are put forward.

Key words: high pressure turbine, failure, prevention, crack, damage, corrosion

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