Pipeline connecting structure for connecting plasma air mother pipe and sealing air mother pipe

The utility model provides a pipeline connecting structure for connecting a plasma air mother pipe and a sealing air mother pipe, and belongs to the technical field of sealing air technologies of thermal power plants. Comprising a shell, three communicating connecting pipes are fixedly connected to the side wall of the shell, one end of each connecting pipe is fixedly connected with a first corrugated pipe, one end of each connecting pipe is fixedly connected with a second corrugated pipe, one end of each third corrugated pipe is fixedly connected with a third corrugated pipe, a coal mill sealing air mother pipe is communicated with the third corrugated pipe, a plasma carrier fan is communicated with the second corrugated pipe, and the other end of each connecting pipe is communicated with the plasma carrier fan. The plasma carrier air mother pipe is communicated with the first corrugated pipe; and a switching valve is arranged in the shell. By arranging the first corrugated pipe, the second corrugated pipe,