Anti-aging corrosion-resistant medium-voltage cable for nuclear power station

The invention belongs to the technical field of cable products, and provides an anti-aging corrosion-resistant medium-voltage cable for a nuclear power station, which comprises at least three cable bags, at least three insulating layers; a distance difference exists between every two adjacent cable bags; the cable further comprises a filling layer, an inner sheath and an outer sheath, a filling cavity comprises three arc cavities, the two extending ends of each arc cavity face to be connected with the outer ring wall of the corresponding insulating layer, a communicating cavity is formed between the inclined end of the middle of each arc cavity and the extending parts of the other two arc cavities, the communicating cavity is in a horn shape, and the arc cavities are filled with the filling layer. The outer sheath is made of halogen-free flame-retardant rubber sheath materials through rubber extrusion and continuous vulcanization, and the inner sheath and the outer sheath are hollow and circular. The arc line