Research on Permeation Characteristics of Oil-dissolved gases Based on Hollow Fiber Membrane Doped with Nano-oxide Al2O3

It is of great significance to conduct real time online monitoring of the categories and content of oil-dissolved gases so as to ensure the safety operation of transformer. Thus, gas separation technology is one of key technologies which are used to realize the real time online monitoring. By far, the conventional methods used to separate the fault gases include vacuum degassing, Mechanical oscillation, and Polymer membrane etc., the former two methods were replaced by Dynamic headspace degassing technology and bellows for the reason that they fail to meet the demand of gas online detection. Though the third one is easy to operate and low-cost, the permeation effect is dissatisfied especially for H2?CH4 and CO with a separation efficiency lower than 20%. In order to solve the problem of…