红外测温探头防护性能数值模拟研究
Numerical Simulation Research on the Protective Performance of Infrared Thermometer Probes
叶志鹏 1李勋锋 1刘艳 2谭震宇 1淮秀兰1
作者信息
- 1. 中国科学院工程热物理研究所,北京 100190;中国科学院大学工程科学学院,北京 100049;中科南京未来能源系统研究院,南京 211135
- 2. 中国科学院工程热物理研究所,北京 100190;中国科学院大学工程科学学院,北京 100049
- 折叠
摘要
本文针对高温叶栅试验台的红外测温需求,设计了测温探头的防护结构,在尽量不干扰主流的前提下实现对测温探头的热防护与污染防护.通过CFD计算,分析了该结构设计的合理性.对冷却空气入口总压的影响进行分析,发现入口总压过小,会造成探头的高温烧蚀,总压过大,则会对主流产生较大干扰.最后对冷却水入口流速进行分析,结果表明,探头的冷却效果随流速增大而增强,当流速大于2 m/s时,冷却效果基本不随流速变化而变化.
Abstract
In this paper,a protective structure for the thermometer probe was designed aiming at the infrared temperature measurement requirements of the high-temperature cascade test bench.The requirements of thermal protection and pollution protection for the thermometer probe can be achieved without interfering with the mainstream as much as possible.The rationality of the structural design was analyzed through CFD calculations and the impact of total pressure at the cooling air inlet was also analyzed in this paper.The results indicate that:the low total pressure of inlet can cause high-temperature ablation of the probe,while a high total pressure will cause significant interference with the mainstream.Finally,the inlet flow rate of the cooling water was analyzed.The results showed that the cooling performance of the probe increased with the increase of flow rate.When the flow rate was greater than 2 m/s,the cooling performance remained basically unchanged with the change of flow rate.
关键词
红外测温/探头防护性能/空气吹扫/水冷保护Key words
infrared temperature measurement/probe protection performance/air purge/water cooling protection引用本文复制引用
基金项目
中国科学院科研仪器设备研制项目(YJKYYQ20200016)
国家科技重大专项(J2019-V-0006-0100)
出版年
2024
NETL
NSTL
维普
万方数据