发电技术 ›› 2024, Vol. 45 ›› Issue (5): 856-867.DOI: 10.12096/j.2096-4528.pgt.24094

• 燃气轮机发电技术 • 上一篇    

高压涡轮动叶叶尖掉块对气动性能及振动的影响

赵明阳1, 殷林林1, 韦文涛1, 陈云1, 刘日晨1, 李军2   

  1. 1.中国航发沈阳发动机研究所, 辽宁省 沈阳市 110015
    2.西安交通大学能源与动力工程学院, 陕西省 西安市 710049
  • 收稿日期:2024-05-24 修回日期:2024-07-11 出版日期:2024-10-31 发布日期:2024-10-29
  • 作者简介:赵明阳(1985),男,硕士,高级工程师,主要研究方向为燃气轮机及航空发动机总体性能设计,393492855@qq.com
    殷林林(1985),女,硕士,高级工程师,主要研究方向为燃气轮机及航空发动机涡轮设计,402452058@qq.com
    韦文涛(1977),男,硕士,研究员,主要研究方向为燃气轮机及航空发动机涡轮设计,13674206325@139.com
    陈云(1982),男,硕士,研究员,主要研究方向为燃气轮机及航空发动机涡轮设计,378474761@qq.com
    刘日晨(1993),男,硕士,工程师,主要研究方向为燃气轮机及航空发动机涡轮设计,lrc9598@qq.com
    李军(1971),男,博士,教授,主要研究方向为透平机械气动热力学与优化设计、动密封流热固多场耦合和增稳抑振技术等,junli@mail.xjtu.edu.cn
  • 基金资助:
    国家自然科学基金重点项目(51936008)

Impact of Falling Blocks of High Pressure Turbine Rotor Blades With Squealer Tip on the Aerodynamic Performance and Vibration Characteristics

Mingyang ZHAO1, Linlin YIN1, Wentao WEI1, Yun CHEN1, Richen LIU1, Jun LI2   

  1. 1.AECC Shenyang Engine Research Institute, Shenyang 110015, Liaoning Province, China
    2.School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi Province, China
  • Received:2024-05-24 Revised:2024-07-11 Published:2024-10-31 Online:2024-10-29
  • Supported by:
    Key Project of the National Natural Science Foundation of China(51936008)

摘要:

目的 高压涡轮损伤条件下运行状态对燃气轮机性能和振动会产生一定影响,而目前准确评估整机是否可以继续服役的手段较为缺乏,为此开展高压涡轮动叶叶尖凹槽磨损掉块对气动性能及振动变形的影响研究。 方法 采用三维数值仿真方法,以原动叶完整叶尖凹槽结构为基准,通过仿真分析了5种不同叶尖凹槽掉块形状对高压涡轮典型气动性能及动叶振动特性的影响规律。 结果 动叶叶尖凹槽叶盆侧掉块,叶背侧掉块,尾缘掉块,叶盆和尾缘同时掉块,叶盆、叶背和尾缘同时掉块,分别造成高压涡轮效率下降0.44%、1.6%、0.03%、0.67%、3.2%;不同动叶叶尖凹槽形状对动叶的振动变形影响较小,尾缘掉块会减小动叶的变形。 结论 综合气动性能及振动变形的影响分析,对于动叶叶尖凹槽的叶盆掉块、尾缘掉块或两者同时掉块的叶片可以继续使用,而对于叶背掉块及盆背侧和尾缘同时掉块的叶片建议不再使用。

关键词: 燃气轮机, 高压涡轮, 间隙泄漏, 数值仿真, 动叶叶尖, 振动响应

Abstract:

Objectives The operating state under the condition of high-pressure turbine damage will have a certain impact on the performance and vibration of the gas turbine. At present, the means to accurately assess whether the whole machine can continue to be in service was relatively lacking. Therefore, the research on the influence of the tip groove wear and block shedding of the high-pressure turbine rotor blade on the aerodynamic performance and vibration deformation had been carried out. Methods Using the three-dimensional numerical simulation method, based on the original tip groove structure of the blade, the influence of five different tip groove damage shapes on typical aerodynamic performance and vibration characteristics of the high pressure turbine was simulated and analyzed. Results The damage of the blade tip groove on the pressure side with falling block, suction side with falling block, trailing edge with falling block, pressure side and trailing edge with falling blocks simultaneous, or pressure side, suction side and trailing edge with falling blocks simultaneous of rotor blades cause an efficiency decrease of 0.44%, 1.6%, 0.03%, 0.67%, and 3.2%, respectively. Different blade squealer tip shapes have a smaller impact on the vibration deformation of the rotor blade, while trailing edge with falling block reduces the deformation of the rotor blade. Conclusions Based on the analysis results of comprehensive performance and vibration, rotor blades with falling blocks at pressure side, trailing edge, or both can continue to be used. However, it is not recommended to use rotor blades with falling blocks at suction side or pressure side, suction side and trailing edge.

Key words: gas turbine, high pressure turbine, leakage flow, numerical simulation, rotor tip, vibration response

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