多路滑动弧的放电特性实验研究

In order to increase the discharge power of gliding arc in the same power supply and the slip area of gliding arc, we studied the discharge characteristics of multi-slide arcs. Firstly, the principle of multiple-channel discharge was combined with the gliding arc discharge of pin electrode to build the experimental system. Then, several experimental schemes were designed based on the differences of electrode spacing and air flow, and electrical signals were collected and high-speed camera was synchronously taken in experiments. Finally, the differences of discharge and breakdown characteristics of double-channel gliding arc were compared, and the influence of different factors was analyzed. The results show that each channel of the double-channel gliding arc has different arc shapes and reignition time, but has the same discharge modes. Only short-cutting events occur in the second channel of gliding arc in double-channel gliding arc discharge. The power of the first channel gliding arc is 2.36 times that of the second at the electrodes distance of 9 mm and 3 mm and air flow rate of 20 L/min. Different flow directions cause the opposite trend of each channel power over time. The total power of double-channel gliding arc is 665 W at an air flow rate of 120 L/min, which is 1.44 times the power of single-channel gliding arc under the same work conditions. Therefore, the multiple-channel gliding arc discharge can effectively increase the discharge power of gliding arc, and the research results can also provide references for the future study of sliding arc.