Rain cover for roof-penetrating branch bus of 220kV combination electrical appliance

The utility model discloses a rain cover for a roof-penetrating branch bus of a 220kV combination electrical appliance. The rain cover comprises a rectangular plate, a barrel, large bent plates, a circular plate and small bent plates, wherein the barrel is welded on the rectangular plate; a circular hole communicated with the barrel is formed in the rectangular plate; the circular plate covering the barrel is arranged on the upper portion of the barrel; two semicircular large bent plates are arranged on the periphery of the barrel; the large bent plates are connected to the outer circumference of the circular plate in a welding manner; the two semicircular large bent plates are connected with each other through a bolt; concentric circular holes are formed in the circular plate; the diameters of the concentric circular holes are larger than the diameter of the branch bus; two semicircular small bent plates are welded on the circumferences of the concentric circular holes, and are connected with each other thro