Electricity leading device lead leading-out structure for measuring peripheral parameters of aero-engine tail nozzle

The invention belongs to the technical field of aero-engine tail nozzle peripheral parameter measurement, and particularly relates to an electricity guiding device lead leading-out structure for aero-engine tail nozzle peripheral parameter measurement. The protective cover covers the periphery of the electricity leading device, is connected to the central cone, is of an interlayer structure, and is provided with a water supply hole and a water return hole in the outer wall and a lead hole inside; the outlet end of the water supply pipe communicates with the water supply hole; the inlet end of the water return pipe communicates with the water return hole, and the outlet end extends out of the tail nozzle; the inlet end of the protection pipe is communicated with the lead hole through the water return hole, and the outlet end of the protection pipe penetrates out of the water return pipe and extends out of the tail nozzle; an electric leading device lead is led out through the lead hole and the protection tube;