一种通过估测管路壁温辅助判断管路防火能力的方法

Method for Auxiliary Judging Pipeline Fireproof Capability By Estimating Pipeline Wall Temperatures

为给出航空发动机管路适航防火试验目视检查试验判据的数据支撑,提出一种在着火区域内外设置温度和应变传感器并通过仿真算出着火区域内试验件表面温度和应变状态的方法。通过研究管路防火试验测试过程中火焰区域内试验件表面温度、试验件表面应力的变化分析,减少管路防火试验目视检查判据的主观性。结果表明,该方法可为试验结果提供数据支撑。

In order to provide the data support for the visual inspection test criterion of the airworthiness fireproof test of aero-engine pipeline,a method of setting temperature and strain sensors inside and outside the fire area and calculating the surface temperature and strain state of the test piece in the fire area by simulation was proposed.In order to reduce the subjectivity of visual inspection criterion in pipeline fireproof protection test,the changes of surface temperature and surface stress of the test piece in the flame area during the pipeline fireproof protection test were studied.The results show that the method can provide data support for the test results.