Arrangement structure for main helium fan lead cable

The invention provides an arrangement structure for a main helium fan lead cable, and belongs to the field of fan leads. Channel steel and a cover plate are welded to a machine base, junction boxes are welded to the side face of the cover plate, and electrical penetration pieces are fixed to the corresponding positions of the outer sides of the junction boxes and installed on a pressure shell; cables in the fan are partitioned, are led out through different junction boxes and then penetrate through the electrical penetration pieces, the cover plate is circular, the cover plate is divided intofour areas, one junction box can be fixed in each area, and two junction boxes are arranged at an interval of 180 degrees; the channel steel, the cover plates and the junction boxes are welded througha machine base, 280 cables of a main helium fan are divided into three parts for wiring in the circumferential direction of the motor, and power cables and control cables are distinguished. Accordingto the arrangement structu