Lightning protection column type insulator

Abstract

The invention discloses a lightning protection column type insulator. The lightning protection column type insulator comprises an upper fitting, a lower fitting and a shell, wherein the upper fitting, the shell and the lower fitting are connected sequentially and fixedly to form a closed cavity. A resistor disc and a resistor ring are arranged in the cavity sequentially from top to bottom. Discharging electrodes are arranged in the resistor ring. A spring is arranged between the upper fitting and the resistor disc in the cavity. A rubber umbrella skirt is fixed to the outer wall of the shell. The lightning protection column type insulator is characterized in that the shell is formed by compounding an inner insulation layer, a middle carbon fiber reinforced layer and an outer insulation layer, a high temperature resistant ceramic tube in clearance fit with the inner insulation layer of the shell is arranged in the cavity, the resistor disc and the resistor ring are annularly arranged in the high temperature resistant ceramic tube, the discharging electrodes are arranged in the resistor ring in pair in the axial direction, a one-way exhaust valve communicated with the atmosphere is arranged in the lower fitting, and the discharging ends of the discharging electrodes are arc. The lightning protection column type insulator has the advantages of being reasonable in structure, high in strength and reliability, good in lightning protection effect, long in service life, safe and the like.

Description

technical field [0001] The invention relates to the technical field of lightning protection and insulators, and relates to a lightning protection column insulator. Background technique [0002] China Utility Model Authorized Publication No. CN2713598Y discloses a utility model patent titled: lightning protection pin type insulator. Its structure is that the upper fittings and the lower fittings are installed on the upper fittings with small bolts passing through the acupuncture gland. The upper fittings, shell and lower fittings form a closed cavity, and the upper fittings and the resistance valve plate are installed in the cavity. There is a spring, there is an inner gap between the resistance valve plate and the lower fitting, and a tapered electrode and a resistance ring are installed in the inner gap, and a gasket is installed at the connection between the inner gap and the resistance valve plate and the lower fitting, and the lower fitting is fixed by a pin. There are ...

AI Technical Summary

Problems solved by technology

What's more serious is that the high-pressure flue gas produced by the strong arc combustion at the moment of lightning voltage has nowhere to be released, and can only be held in the shell. When the high-pressure flue gas exceeds the pressure-bearing capacity of the shell, it will destroy the shell; The pressure is lower than the pressure bearing capacity of the shell. During the process of gradually reducing the pressure and diffusing the high-pressure flue gas in the shell, the smoke and dust hang on the surface of the built-in resistor sheet, resistor ring and discharge electrode in the shell, affecting its function and reducing service life

Images