论文标题
在强电磁干扰下，溶解的气体监测探针无液体分离
Dissolved gas monitoring probe without liquid-gas separation under strong electromagnetic interference
论文作者
论文摘要
在强电磁干扰下对液体中溶解气体的快速监测非常重要。可以将可以放入液体中的电子气体传感器在强电磁场下难以可靠地工作。现有的溶解气体的光学监测技术都需要气体分离，并且在气相中进行，及时性较差。在本文中，提出了在强电磁干扰下没有液态气体分离的溶解气体监测探针。我们以变压器油溶解的乙炔监测为例，提出了油核光子晶体光纤维光热干涉探针，并证明了直接无油气分离的痕量油溶解乙炔的可行性。最小检测极限达到1.4 ppm，响应时间约为70分钟。由于良好的绝缘性能和紧凑的尺寸，全纤维探针提供了适用于变压器油中的适用性，并在强烈的电磁干扰下进行在线监测。
Rapid and direct monitoring of dissolved gases in liquids under strong electromagnetic interference is very important. Electronic gas sensors that can be placed into liquids are difficult to work reliably under strong electromagnetic fields. The existing optical monitoring techniques for dissolved gases all require gas-liquid separation, and are conducted in gas phase, which have poor timeliness. In this paper, a dissolved gas monitoring probe without liquid-gas separation under strong electromagnetic interference is proposed. We take transformer oil-dissolved acetylene monitoring as an example, an oil-core photonic crystal fiber photothermal interferometry probe is proposed and demonstrates the feasibility of trace oil-dissolved acetylene directly monitoring without oil-gas separation. The minimum detection limit reaches 1.4 ppm, and the response time is about 70 minutes. Due to the good insulation performance and the compact size, the all-fiber probe provides applicability to be placed into transformer oil and perform on-line monitoring under strong electromagnetic interference.
