基于石墨烯材料的高压气瓶快速加热装置设计与研究

Design and Research of Graphene-Based Rapid Heating Device for High-Pressure Gas Cylinders

摘要:

在航空航天领域，高空低温环境严重影响机载气压作动系统中高压气瓶的性能，导致其内部压力下降，进而威胁飞机作动部件的正常运行。设计基于蒙烯玻纤（石墨烯涂层玻璃纤维）的快速加热装置，通过优化 三电极布局和创新3 mm 气凝胶保温层设计，解决加热效率与均匀性的难题；基于热流密度计算（功率密度0.8 W/cm2）与ANSYS Fluent 温度场仿真，结合-55 ℃工况实验验证，结果表明：装置在6 min 58 s 将单气瓶从-55 ℃加热至25 ℃，电热转换效率达94.2%，热损失降低至30 W。该方案可为高压气瓶低温稳定运行提供高效解决方案，在航空及极地装备领域具有显著应用价值。

Abstract:

In the field of aviation and aerospace, high-altitude low temperature environments have a significant impact on the performance of high-pressure gas cylinders in aircraft-mounted pressure actuation systems. This leads to internal pressure decreases in the gas cylinders, which poses risks to the normal operation of aircraft actuator components. This study presents a novel design of a rapid heating device based on Graphene-skinned Glass Fiber (GSGF). By optimizing the three-electrode layout and innovating the design of a 3-mm aerogel thermal insulation layer, the challenges of heating efficiency and uniformity have been addressed. Based on the heat flux density calculation (power density of 0.8 W/cm2) and temperature field simulation by ANSYS Fluent, combined with the experimental verification under the -55℃ working condition, the results show that the device can heat a single gas cylinder from -55℃ to 25℃ in 6 minutes and 58 seconds, with the electro-thermal conversion efficiency reaching 94.2% and the heat loss reduced to 30 W. This scheme provides an efficient solution for the stable operation of high-pressure gas cylinders in low-temperature environments and has significant application value in aerospace and polar equipment fields.