基于非开挖检测管的半渗透膜研究

针对燃气管道泄漏事故频繁发生的现象,研究一种用于烃类气体泄漏检测的具有半渗透功能的非开挖检测管。检测管是由内层支撑架和外层的半渗透膜组成。半渗透膜对烃类气体分子具有高的渗透性,能够阻止水蒸气及其他非烃类气体分子通过。实验测试表明,半渗透膜不能透水,检测管的半渗透膜内外层压差增大,烃类气体渗透量增多,膜越厚气体渗透量越少。利用安装半渗透膜检测管的检测实验装置对甲烷气体测试表明,半渗透膜的检测管对甲烷气体渗透性好,检测管检测效果优良。本套实验装置的实验研究为基于非开挖检测管的检测系统的后期市场化推广奠定基础。

Study on Semi-permeable Membrane Based on Trenchless Detection Tube

According to gas pipeline leakage accidents occurred frequently, researched on detection with semi-permeable function of trenchless detection tube of hydrocarbon gas. Test tube is composed of an inner support frame and outer semi-permeable membrane. The semi-permeable membrane with high permeability to gas hydrocarbon molecules, can prevent water vapor and other non-hydrocarbon gas molecules. Test results show that semi permeable membrane impermeable, at the same time, semi-permeable membrane of the tube inner and outer pressure differential increases, increasing the amount of hydrocarbon gas permeation, membrane more thick gas permeation amount less. The installation of semi-permeable membrane tube testing equipment indicates that the test for methane gas detection tube, semi-permeable membrane permeability of methane gas detection tube, excellent test results. Experimental study on the set of experiment device and lay the foundation for the later market popularization of detection system based on non excavation test tube.