摘要
为评估使用热电偶测量涡轮叶片表面温度数据结果与真实温度的偏差,确保数据准确和有效使用,针对在涡轮叶片综合冷效试验中应用较多的侵入式热电偶敷设测温方式,从工程应用角度出发,提炼出与涡轮叶片表面温度测量准确度有关联的操作工序引入额外热阻、热电偶埋入深度和热电偶埋入间隙等工艺影响因素。通过数值模拟和试验研究,获取了热电偶埋入深度和埋入间隙的影响规律。
To evaluate the deviation between the turbine blade surface temperature measured by thermocouple and the actual value, and ensure the accuracy and effectiveness of the data, the intrusive thermocouple laying temperature measurement method, which is widely used in the comprehensive cooling effect test of turbine blade was investigated. From the point of view of engineering application, the process influencing factors like extra thermal resistance, thermocouple embedded depth and embedded gap related to the measurement accuracy of turbine blade surface temperature were extracted. Through numerical simulation and test investigation, the influence rules of thermocouple embedded depth and gap were obtained.
作者
刘志刚
贺元
张帅
邹远禄
吴晓东
LIU Zhi-gang;HE Yuan;ZHANG Shuai;ZOU Yuan-lu;WU Xiao-dong(AECC Sichuan Gas Turbine Establishment,Chengdu 610500,China)
出处
《燃气涡轮试验与研究》
2021年第4期7-11,25,共6页
Gas Turbine Experiment and Research
基金
四川省无人系统智能感知控制技术工程实验室资助(WRXT2020-003)。
关键词
涡轮叶片:冷效试验
铠装热电偶
温度测量
敷设工艺
因素分析
埋入深度
埋入间隙
turbine blade
cooling efficiency test
metal-sheathed thermocouple
temperature measurement
laying technology
influencing factors analysis
embedded depth
embedded gap
