Device for preventing overtemperature of tower wall of ammonia synthesis tower

A device for preventing overtemperature of a tower wall of an ammonia synthesis tower relates to the technical field of ammonia synthesis equipment and comprises a tower body and a tower internal mounted in the tower body, a plurality of isolation devices are uniformly distributed on the outer wall of the tower internal along the axial direction of the tower internal, each isolation device comprises a plurality of isolation pieces uniformly distributed along the circumferential direction of the outer wall of the tower internal, and the isolation pieces are arranged on the outer wall of the tower internal. Each separator comprises a fixed part fixedly mounted on the outer wall of the tower internal part, a clamping part rotatably mounted on the fixed part, a driving part slidably arranged on the fixed part and a steel ball clamped in the clamping part, and the clamping part is connected with the power output end of the driving part; the fixing part is fixedly installed on the outer wall of the tower internal p