Anti-fouling, fog, ice, snow, lightning, bird damage, double dovetail insulator shielding cover and protection method

A shielding cover and insulator technology, which is applied in the field of pin insulator protection equipment, can solve threats to the safe operation and power supply reliability of AC and DC power transmission and transformation lines, the general anti-fog flashing effect of insulators, the effective insulation distance of supporting wires, etc. problems, to achieve the effect of avoiding ground tripping and pollution flashover accidents, eliminating long-term wind and sun, and reducing the chance of lightning strikes

CN104200934BInactive Publication Date: 2017-02-15NANZHAO COUNTY ELECTRIC POWER BUREAU
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2017-02-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a fouling fog, ice and snow flash and bird strike prevention double-dovetail type insulator shielding cover and a protection method thereof. The fouling fog, ice and snow flash and bird strike prevention double-dovetail type insulator shielding cover comprises two wedge-shaped wire grooves for a lead to penetrate, wherein the two wedge-shaped wire grooves are formed in a circular-arc-shaped casing; a flexible annular inner skirt which is matched with a porcelain bottle is arranged in the circular-arc-shaped casing; the annular inner skirt is provided with two lead grooves which are matched with the wedge-shaped wire grooves respectively; the circular-arc-shaped casing is provided with a conical spine; each wedge-shaped wire groove and each lead groove are filled with wedge-shaped sealing strips. The fouling fog, ice and snow flash and bird strike prevention double-dovetail type insulator shielding cover is widely applied to a pin insulator which is arranged on a 35 kv and 35 kv below voltage grade alternating current and direct current power transmission line to prevent disasters such as the fouling flash, the fog flash, the ice flash, the snow flash, the bird strike and the lightning stroke, the insulation is good, the weather resistance is good, the installation and the detachment are convenient, the durable effect is achieved, the cost is low, the functions are diversified, and the service life is more than 8 years.
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Description

technical field

[0001] The invention belongs to the technical field of pin-type insulator protection equipment for AC and DC power transmission and transformation lines of 35kV and below, and particularly relates to a double-dovetail insulator shielding cover and a protection method for preventing pollution, fog, ice, snow, and bird damage. Background technique

[0002] Due to the advantages of low engineering cost, fast construction and convenient use, high and low voltage pin insulators in the power grid are widely used in AC and DC power transmission lines with a voltage level of 35kv and below, especially in 10kv lines, 75% of straight pole insulators use pin type Insulators; however, due to the structural design problems of the needle bottle, a large amount of pollution is easy to accumulate in the grooves between the supporting wires and the effective insulation distance between the insulator and the cross-arm is short, resulting in smog, fog, and cover. Under severe w...

Examples

Embodiment 1

[0035] Embodiment 1: as figure 1 , 2 , 3 and 4, a double dovetail type insulator shielding cover for anti-fouling, fog, ice, snow and bird damage, including two wedge-shaped slots 16 arranged on the arc-shaped shell 2 for the wire to pass through, the arc-shaped The housing 2 is provided with a flexible annular inner skirt 11 that matches the porcelain bottle 15. The annular inner skirt 11 is provided with a wire groove 18 that matches the wedge-shaped wire groove. The arc-shaped housing 2 is provided with a tapered Sting 4, wedge-shaped sealing strip 17 is filled in described wedge-shaped wire groove 16 and wire groove 18, and filling wedge-shaped sealing strip fills in wedge-shaped wire groove 16 and wire groove 18 and can have better sealing effect when housing is extruded downwards.

[0036] The method for using the above-mentioned device to prevent pollution, fog, ice, snow, flash and bird damage includes the following steps:

[0037] 1) Put the flexible annular outer s...

Embodiment 2

[0043] Embodiment 2: as figure 1 , 2 , 3 and 4, a double dovetail type insulator shielding cover for anti-fouling, fog, ice, snow and bird damage, including two wedge-shaped slots 16 arranged on the arc-shaped shell 2 for the wire to pass through, the arc-shaped The housing 2 is provided with a flexible annular inner skirt 11 that matches the porcelain bottle 15. The annular inner skirt 11 is provided with a wire groove 18 that matches the wedge-shaped wire groove. The arc-shaped housing 2 is provided with a tapered Thorn 4, the wedge-shaped sealing strip 17 is filled in the wedge-shaped wire groove 16 and the wire groove 18, and the wedge-shaped sealing strip is filled in the wedge-shaped wire groove 16 and the wire groove 18, and the sealing effect will be better when the housing is squeezed downward;

[0044] A flexible annular outer skirt 14 is arranged on the lower peripheral side of the arc-shaped housing 2, and the outer peripheral side of the annular outer skirt 14 ha...

Embodiment 3

[0052] Embodiment 3: as figure 1 , 2 , 3, 4, and 5, an anti-fouling, fog, ice, snow, and bird damage double dovetail insulator shielding cover includes two wedge-shaped wire slots 16 arranged on the arc-shaped housing 2 for the wire to pass through. The arc-shaped housing 2 is provided with a flexible annular inner skirt 11 that matches the porcelain bottle 15. The annular inner skirt 11 is provided with a wire groove 18 that matches the wedge-shaped wire groove. The arc-shaped housing 2 is provided with Tapered thorns 4, wedge-shaped sealing strip 17 is filled in the wedge-shaped wire groove 16 and wire groove 18, and the wedge-shaped sealing strip is filled in the wedge-shaped wire groove 16 and wire groove 18, and the sealing effect will be better when the housing is squeezed downward;

[0053] A flexible annular outer skirt 14 is arranged on the lower peripheral side of the arc-shaped housing 2, and the outer peripheral side of the annular outer skirt 14 has an annular gr...