| 发动机主动间隙控制系统的应用及发展趋势 |
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| 引用本文： | 常智勇,曲胜,黎旭.发动机主动间隙控制系统的应用及发展趋势[J].航空发动机,2014,40(6):73-78. |
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| 作者姓名： | 常智勇 曲胜 黎旭 |
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| 作者单位： | 1. 海军驻沈阳地区发动机专业军事代表室,沈阳,110015
2. 中航工业沈阳发动机设计研究所,沈阳,110015 |
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| 摘 要： | 为了尽可能减少燃油消耗,并进一步降低使用成本和环境影响,航空发动机需要保持较高的整机效率。由于涡轮间隙严重影响涡轮效率,为消除其不利影响,分析了叶尖间隙形成和变化的机理及主要影响因素,重点综述了3种不同的主动间隙控制系统的控制方法及其技术特点,总结了主动间隙控制在提高整机效率、降低燃油消耗、减少排放、降低维护费用等方面的巨大收益,并对主动间隙控制技术的关键技术和未来发展方向进行了讨论。认为国内需要认识到主动间隙控制技术的重要性并大力开展其关键技术研究。
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| 关 键 词： | 主动间隙控制 叶尖间隙 涡轮 整机效率 航空发动机 |
Applications and Development Trend of Gas Turbine Active Clearance Control System |
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| Authors: | CHANG Zhi-yong QU Sheng LI Xu |
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| Institution: | 1. Navy Consumer Representative Office of Engine in Shenyang, Shenyang 110015;2. AVIC Shenyang Engine Design and Research Institute, Shenyang 110015, China |
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| Abstract: | In order to minimize fuel consumption, reduce operating costs and lower environmental impact, turbofan engines must be of high overall efficiency. Provided turbine tip clearance dramatically influenced turbine efficiency, in order to eliminate the negative influence, mechanisms of tip clearance formation and variation and relevant main influence factors were analyzed. Three different active clearance control (ACC) systems were reviewed. Benefits of ACC systems are summarized as lower fuel consumptions, less emissions and lower maintenance costs due to efficiency improvement.Furthermore, key technologies of ACC and the future directions were also discussed. As a result, ACC technology considered as key aspect of aspect of modern gas turbine needs to be well investigated and developed in China. |
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| Keywords: | active clearance control tip clearance turbine overall efficiency aeroengine |
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