管路加热带安装工艺试验研究

Experimental Study on the Installation Process of Electric Heater for Pipeline

针对推进剂管路加热带缠绕工艺流程复杂、工艺参数不定量的问题开展试验研究,结合工程实践经验,采用试验矩阵方法研究获取绝缘膜包覆状态、涂胶厚度以及气泡对加热效果的影响。结果表明,内绝缘膜无交叠缠绕、外绝缘膜间隙缠绕、利用专用刮胶板控制涂胶厚度约0.2 mm等工艺方法可以减少气泡的产生,有效提升加热带对管路的加热效果,满足产品质量要求,该试验结论可为后续管路加热带缠绕及其他加热片安装提供参考。

Due to the complexity and non-quantitative process of installation procedure of electric heater for propellant-line,test matrix method according to engineering experience was implemented to determine the influence of the status of insulation flim,glue thickness and embedded air bubble on pipeline heating.This study indicates that by choosing non-overlap wrapping for inner/outer insulation flim and 0.2 mm glue thickness using special rubber scraper,it is useful to reduce air bubble formation and improve the heating quality.The test results may serve as a reference for future installation of similar pipelines with electric heater.