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为对3种不同冷却结构形式的三头部燃烧室冷却效果做出评定,采用K型铠装热电偶和示温漆技术同时对燃烧室3种火焰筒的表面温度进行试验测试研究.试验结果表明:有限的热电偶只能测试局部的火焰筒温度,难以全面反映燃烧室火焰筒冷却效果;示温漆测试技术能有效的区分出燃烧室火焰筒壁面温度及显示温度场分布,示温漆等温线判读精度可达±10℃,为燃烧室3种火焰筒冷却结构效果的评定提供了数据支撑.
In order to evaluate the cooling effect of the three-head combustion chamber in three different cooling structures, the surface temperature of the three flame tubes in the combustion chamber was tested and tested simultaneously by K-type thermocouple and temperature-indicating paint technology. The test results show that : Limited thermocouple can only test the local flame tube temperature, it is difficult to fully reflect the combustion chamber flame tube cooling effect; Show the temperature test technology can effectively distinguish the combustion chamber flame tube wall temperature and display the temperature field distribution, The accuracy can reach ± 10 ℃, which provides data support for the evaluation of the effect of cooling structure of three kinds of flame tube in the combustion chamber.