Overhead pipeline heat preservation device

The utility model discloses an overhead pipeline heat preservation device which comprises a movable plate detachably installed on the outer side of an overhead pipeline body. The number of the movable plates is two, each movable plate is of a semicircular structure, the two movable plates are symmetrically arranged up and down, the left ends of the two movable plates are movably connected through a movable seat, the inner side of the movable seat is in matched contact with the outer side of the overhead pipeline body, and fixed plates in matched contact are fixed to the right ends of the two movable plates; according to the overhead pipeline heat preservation device, the two movable plates are arranged on the outer side of the overhead pipeline body and matched with the detachable connecting plates, heat preservation construction can be conducted on the overhead pipeline body on site more conveniently, the flexibility is higher, and the heat preservation effect is better. The overhead pipeline body and the he