Anti-fouling flash disk insulators

Abstract

The invention discloses an anti-fouling flash disk insulator, which comprises an umbrella disk with an iron cap. The lower surface of the umbrella disk is provided with an annular umbrella edge and a drip edge. The drip edge is integrated with the umbrella disk. The distance h1 of the axis L of the shaped insulator is smaller than the distance h2 between the uppermost end of the drip edge and the axis L of the disc insulator, that is, the diameter of the lowermost end of the annular drip edge is smaller than the diameter of the upper end of the drip edge. Since the distance h1 between the lowermost end of the dripping edge and the axis L of the disc insulator is smaller than the distance h2 between the uppermost end of the dripping edge and the axis L of the disc insulator, the dirt on the umbrella plate will naturally slide down under the action of wind and rain, and can be blocked. The dust particles in the atmosphere are not allowed to enter the lower surface of the umbrella disc, so as to prevent dust particles from accumulating on the umbrella edge of the lower surface of the umbrella disc. An insulating ring and a cleaning brush are arranged on the umbrella disc, which can be continuously driven by the wind. Sweep off the accumulated dirt on the umbrella plate, so as to ensure the cleanliness of the upper surface of the insulator, and achieve the purpose of preventing pollution flashover.

Description

technical field [0001] The invention relates to an insulator, in particular to an anti-fouling flashover disc insulator. Background technique [0002] During the long-term operation of the insulator, the dust particles in the atmosphere deposit on the surface to form a dirty layer. In dry weather, the dirty layer has a high resistance and the insulation performance will not be reduced. However, under the weather conditions such as fog, dew, light rain, and snow, After the electrolyte in the dirty layer is wet, the surface conductivity increases and the insulation performance decreases, while the ash in it retains moisture, which promotes the further moisture of the dirty layer, thereby dissolving more electrolyte, causing flashover discharge on the wet surface of the insulator, referred to as pollution flash. The notable feature of insulator pollution flashover is low flashover voltage, which may be as low as 10kV and below. The average flashover voltage of a standard insu...

AI Technical Summary

Problems solved by technology

The contamination on the surface of transmission line insulators is unavoidable, and it needs to be cleaned after a period of time. Generally, manual cleaning, mechanical cleaning or charged water flushing are used. The cost of charged water flushing is relatively high. Lines are generally not cleaned mechanically or washed with charged water. Manual cleaning requires a power outage. The once-a-year power outage cleaning causes huge economic losses to the power system and the national economy. Even so, pollution flashover accidents still occur from time to time

At present, the various insulators used in the power system are mainly self-cleaning by rainwater washing. If there is no rain for a long time, the pollution will be more serious. Often, pollution flashover occurs when there is light rain or fog, causing major blackouts , causing huge losses

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