| 耿欣，王晓良，薛秀生.射流预冷试验防水温度传感器设计[J].航空发动机,2019,45(2):69-73 |
| 射流预冷试验防水温度传感器设计 |
| Design of Water-proof Temperature Sensor for Jet Pre-cooling Test |
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| DOI： |
| 中文关键词: 防水温度传感器 射流预冷 温度测试 滤水结构 隔热结构 航空发动机 |
| 英文关键词:water-proof temperature sensor,jet pre-cooling,temperature test,filter structure,heat insulation structure,aeroengine |
| 基金项目:航空动力基础研究项目资助
（NS2016029）资助 |
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| 中文摘要: |
| 为解决射流预冷试验中遇到的常规带罩温度探针接点遇水问题，基于气液两相流环境设计了1 种防水温度传感器。通
过设计滤水和隔热结构，避免了水对测量结果的干扰。现场校准试验结果表明：在100～450 ℃，该传感器的测温值比常规带罩温
度探针的低1.0%～1.1%。射流预冷试验结果表明：防水传感器在一定水气比下是有效的；与常规带罩温度探针反向测试的截面平
均总温估算值对比表明，在来流343.3 ℃、水气比5.5%的工况下，在雾化充分的测量截面，剔除个别遇水测点，防水传感器测温值明
显比热电偶的高，差值最高达11.8%。，说明防水传感器可以有效减小传热误差。 |
| 英文摘要: |
| Abstract: In order to solve the water contact problem of conventional temperature probe with cover in jet pre-cooling test,a waterproof
temperature sensor was designed based on the gas-liquid two -phase flow environment. By designing water filtration and heat
insulation structure,the interference of water to measurement results was avoided. The results of field calibration test show that the
temperature measurement value of the sensor is 1.0%～1.1% lower than that of the conventional temperature probe with cover at 100～450 ℃.
The test results of jet pre-cooling show that the water-proofing sensor is effective at a certain water-gas ratio. The estimation of crosssection
average total temperature of water-proofing sensor is compared with that of conventional temperature probe with cover. The results
show that under the working conditions of 343.3 ℃of incoming flow,5.5% of water-gas ratio and sufficient measurement cross-section of
atomization,the temperature measurement value of water-proofing sensor is obviously higher than that of thermocouple with excluding
individual water contact measuring points. The difference is up to 11.80% and it is indicated that the water-proof sensor can effectively
reduce the heat transfer error. |
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