Hollow composite insulator for ultrahigh-voltage high-capacity iron core test reactor

Abstract

The utility model discloses a hollow composite insulator for an ultrahigh-voltage large-capacity iron core test reactor, which comprises an insulating tube and an umbrella cover, the umbrella cover is of a sectional structure and is integrally formed on the insulating tube, annular grooves which are arranged at intervals are arranged on the outer wall of the insulating tube, tooth-shaped grooves are arranged on the groove walls of the annular grooves, and the tooth-shaped grooves are communicated with the umbrella cover. The two adjacent umbrella covers are arranged in the annular groove after being formed and spliced, and the two umbrella covers and the tooth-shaped grooves in the groove walls of the corresponding sides of the annular groove are solidified into a whole. According to the utility model, the outer wall of the insulating tube is provided with the annular groove, and when the umbrella cover is subjected to injection molding, part of silicone rubber flows into the annular groove and is solidified with the tooth-shaped groove to form a whole, so that the combination effect between the umbrella cover and the adjacent umbrella cover and between the umbrella cover and the insulating tube can be effectively ensured, and the sealing is ensured; and matched step surfaces are arranged at the joint of two adjacent umbrella covers, so that the combination effect is further ensured.