| 基于多光谱的涡轮叶片表面温度场测量系统 |
| Research on turbine blade surface temperature field measurement system based on multi⁃spectrum |
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| 中文摘要: |
| 由于航空发动机内部背景辐射较强，利用常规辐射测温系统测量涡轮叶片表面得到的温度值与实际温度值存在较大偏差，针对此问题，基于多光谱测温原理研制了新一代涡轮叶片表面温度测量系统。该系统采用可动镜探针及固定镜探针实现高可靠性扫描，通过高速多通道同步信号采集与控制系统实现信号的高效采集和设备的精准控制，利用复杂热环境多光谱测温建模、多视角三维温度场重建等技术实现叶片表面三维温度场在线测量与重建。使用黑体辐射源和动态校准装置对基于多光谱的涡轮叶片表面温度场测量系统的性能指标进行测试，结果显示：该系统能够实现550 ~ 1 500 ℃涡轮叶片表面温度的实时在线测量，最大允许误差不超过± 7.5 ℃，满足涡轮叶片温度测量需求。研究成果为促进高温复杂环境下航空发动机涡轮叶片热学参数测试技术发展提供了有力支撑。 |
| 英文摘要: |
| Due to the strong background radiation inside the aero engine, there is a large deviation between the temperature value obtained by measuring the surface of the turbine blade using the conventional radiation temperature measurement system and the actual temperature value. To address this issue, a new generation of turbine blade surface temperature measurement system was developed based on the principle of multispectral temperature measurement. The system uses movable mirror probes and fixed mirror probes to achieve high?reliability scanning, realizes efficient signal acquisition and precise control of equipment through high?speed multi?channel synchronous signal acquisition and control system, and realizes online measurement and reconstruction of three?dimensional temperature field on the blade surface by using multispectral temperature measurement modeling in complex thermal environment, multi?view three?dimensional temperature field reconstruction and other technologies. The performance indexes of the multispectral turbine blade surface temperature field measurement system were tested by using a blackbody radiation source and a dynamic calibration device, and the results showed that the system could achieve real?time online measurement of the surface temperature of turbine blades at 550 ~ 1 500 ℃, and the maximum allowable error did not exceed ± 7.5 ℃, which met the temperature measurement requirements of turbine blades. The research results provide strong support for promoting the development of thermal parameter testing technology for aeroengine turbine blades in high?temperature and complex environments. |
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| 中文关键词: 辐射测温 多光谱测温 高速数据采集 三维温度场 融合重建 |
| 英文关键词:radiation temperature measurement multi⁃spectral temperature measurement high⁃speed data acquisition three⁃dimensional temperature field fusion reconstruction |
| 基金项目: |
| DOI：10.11823/j.issn.1674-5795.2025.01.06 |
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