燃气轮机轮缘密封气动技术研究进展

高杰; 黄镜玮; 杜玉锋; 霍东晨; 付维亮

doi:10.13224/j.cnki.jasp.2021.02.007

燃气轮机轮缘密封气动技术研究进展

doi: 10.13224/j.cnki.jasp.2021.02.007

基金项目: 国家自然科学基金(51779051,51979052); 航空动力基金(6141B09050392); 国家科技重大专项(2017-Ⅲ-0010-0036)

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出版历程
- 收稿日期: 2020-06-17
- 刊出日期: 2021-02-28

Advances in rim seal aerodynamic technology for gas turbines

1.
College of Power and Energy Engineering,Harbin Engineering University,Harbin 150001,China
2.
Center for Post-Doctoral Studies,Chongqing University,Chongqing 401120,China
3.
Center for Post-Doctoral Research,Chongqing Jiangjin Shipbuilding Industry Company Limited,China State Shipbuilding Corporation Limited,Chongqing 402263,China

摘要

摘要: 为明确轮缘密封技术发展现状及趋势,在相关文献调研基础上,从轮缘密封燃气入侵的预测模型、轮缘密封不稳定流动机制、涡轮轮缘密封燃气入侵特性及流动机理、轮缘密封出流与涡轮主流的相互干扰、涡轮轮缘密封设计及气动性能改进等方面对燃气轮机轮缘密封气动技术的研究进展进行综述。简要总结了轮缘密封流动的常用研究方法与研究结果,并指出未来除需进一步完善多参数耦合影响下的多种封严结构燃气入侵理论预测模型，强化涡轮高参数试验及高精度数值计算方法外,还应在变工况条件下的旋转诱导入侵、轮缘密封间干扰和封严出流与主流非定常交互演化机制等方面开展更深入的细致研究,并在此基础上探索高性能轮缘密封结构设计优化技术。另外,强化气热环境下的封严出流对涡轮冷却特性的影响研究，发展考虑封严出流作用的涡轮低维度气动设计技术也是轮缘密封技术发展的重要方向。
- 轮缘密封 /
- 不稳定流动 /
- 燃气入侵 /
- 封严特性 /
- 结构设计
Abstract: In order to clarify the development status and trend of rim seal technology based on the research of relevant literatures, the development of the research about gas turbine rim seal aerodynamic technology was reviewed in five aspects: the prediction model of gas intrusion for rim seals, the unstable flow mechanism for rim seals, gas intrusion characteristics and flow mechanisms for turbine rim seals, the mutual interaction between the rim seal flow and the turbine mainstream, and turbine rim seal design and aerodynamic performance improvement. The common research methods and research results of rim seal flow were briefly summarized. The research result show that in the future, it is necessary to further improve the prediction model of gas intrusion theory of multiple seal structures under the influence of multi-parameter coupling, strengthen the turbine high parameter experiment and high-precision numerical calculation method. Besides, more in-depth and detailed research should be carried out on rotation-induced invasion under variable operating conditions, interference between rim seals, and unsteady interaction evolution mechanism between seal outflow and mainstream, and on this basis, it’s imperative to explore the design optimization technology of high-performance rim seal structure. In addition, strengthening the research on the influence of the purge flow under the air-heat environment on the cooling characteristics of the turbine, and the development of turbine low-dimensional aerodynamic design technology considering the purge flow effect is also an important direction for the development of rim seal technology.
- unstable flow /
- gas intrusion /
- seal characteristics /
- structural design /

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参考文献(136)

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