Anti-pollution flashover creepage extender

The utility model relates to an anti-pollution flashover creepage extender, which is in a sector ring shape and comprises an inner ring covered on an umbrella skirt surface of an insulator, an extension part, namely a skirt edge exceeding the umbrella skirt surface of the insulator, and an opening formed by an upper lap joint edge and a lower lap joint edge, two circles of annular bulges are arranged on one downward surface of the skirt edge, and the height of the annular bulges is set to be 0.8-1.2 cm; and a clamping and wrapping ring for clamping the edge of the umbrella skirt of the insulator is arranged on the outer circumference of the downward surface of the inner ring. According to the utility model, through the arrangement of the annular projection, the creepage distance of the umbrella skirt is increased, the rigidity of the umbrella skirt is increased, and the problems of edge collapse and falling of the skirt edge part are reduced; and the problem of infirm installation is solved through the clampi