公开(公告)号：US20240264071A1

公开(公告)日：2024-08-08

申请号：US18606889

申请日：2024-03-15

申请人： CHONGQING UNIVERSITY

发明人： Fu WAN ,  Weigen Chen ,  Weiping Kong ,  Pinyi Wang ,  Lin Du ,  Youyuan Wang ,  Quan Zhou

IPC分类号： G01N21/01

CPC分类号： G01N21/01 ,  G01N2201/06113 ,  G01N2201/08

摘要： An in-situ detection component for dissolved gases in liquid-phase media and preparation method of the in-situ detection component, the detection component is a drilled hollow-core light guiding device coated with a liquid-gas separation membrane on the outer surface. The liquid-gas separation membrane directly filters the gases dissolved in liquid-phase media into the drilled hollow-core light guiding device, where the laser interacts with the gases and generates the response signals that are transmitted through the hollow-core light guiding device, to realize the simultaneous dissolved gas separation and detection. The present application substantially reduces the time required for liquid-gas separation process in detection components, allowing for fast and accurate in-situ detection of dissolved gases, and integration of liquid-gas separation and detection procedures.

公开(公告)号：US20240288359A1

公开(公告)日：2024-08-29

申请号：US18543861

申请日：2023-12-18

申请人： Chongqing University ,  State Grid Chongqing Electric power Research Institute ,  Shandong Taikai Transformer Co., Ltd. ,  Optosky (Xiamen) Optical Ltd

发明人： Fu Wan ,  Weigen Chen ,  Zhiyi Luo ,  Yingkai Long ,  Pinyi Wang ,  Lin Du ,  Qiuxia Sun ,  Quan Zhou ,  Youyuan Wang ,  Hongfei Liu

IPC分类号： G01N21/17 ,  G01N33/28 ,  G01R31/12

CPC分类号： G01N21/1702 ,  G01N33/2841 ,  G01R31/1218 ,  G01R31/1281 ,  G01N2021/1704 ,  G01N2201/06113

摘要： The present disclosure relates to a simultaneous detection method and system for dissolved gas and partial discharge in insulating oil, and belongs to the field of electrical devices. The method includes the steps: freely diffusing the dissolved gas in the insulating oil to an F-P optical fiber interference cavity through an oil-gas separation membrane; coupling pump light and probe light into the F-P optical fiber interference cavity through a frequency division multiplexer; making, by an optoacoustic effect of the dissolved gas stimulated by the pump light and an ultrasonic wave generated by the partial discharge, the oil-gas separation membrane vibrate; detecting, by the probe light, vibration of the oil-gas separation membrane, which changes a cavity length, wherein when the probe light is reflected by the oil-gas separation membrane, an interference signal is generated due to the change of the cavity length.