The coaxial conductive current collector includes one water cooled inner electrode on a rotating shaft, one conducting inner electrode copper plate, water cooled outer electrode, one insulating covering between the inner electrode and the outer electrode and one conducting outer electrode copper plate. It features the middle inner electrode conducting layer between the conducting inner electrode copper plate and the water cooled inner electrode, and the middle outer electrode conducting layer between the conducting outer electrode copper plate and the water cooled outer electrode. The present invention has the advantages of great conducting area, short conducting distance, low electrical energy loss, capacity of facilitating start of MF power source device, less material consumption and easy installation. |