Steam directly-buried pipeline anti-corrosion device and control method thereof

The invention discloses a direct-buried steam pipeline anti-corrosion device and a control method thereof, and belongs to the technical field of direct-buried steam pipelines, the direct-buried steam pipeline anti-corrosion device comprises a direct-buried steam pipeline, the direct-buried steam pipeline comprises a working pipe and an outer protective pipe, the working pipe is arranged on the inner side of the outer protective pipe and is coaxial with the outer protective pipe, and the outer protective pipe is arranged in the working pipe; a plurality of inner fixing supports are arranged between the working pipe and the outer protective pipe and evenly distributed in the circumferential direction of the outer protective pipe, at least one inner fixing support is provided with a cavity, and an opening is formed in the end, away from the working pipe, of the cavity. The lower end of the cathode protection pile is arranged in the soil layer in a penetrating mode, the upper end of the cathode protection pile is