Air bag type metal scale extreme high voltage equalizing shield

Abstract

The invention discloses an air bag type metal scale extreme high voltage equalizing shield comprising a spherical or annular inflatable inner container, a support rack and a metal voltage equalizing element, wherein a central axis part of the inflatable inner container is provided with a via hole, two electrode connecting pins are arranged in the via hole, and an outer surface of the inflatable inner container is covered with installation seats that are distributed regularly; the support rack is mounted on a part, positioned below the via hole, of the inflatable inner container; the support rack is connected with the inflatable inner container via the installation seats; the metal voltage equalizing element comprises scale-shaped metal sheets and metal screw rods welded at central parts of the scale-shaped metal sheets, the metal screw rods are screwed into the installation seats, the scale-shaped metal sheets are round in shape, edge parts of the scale-shaped metal sheets are provided with rolled rims, all the scale-shaped metal sheets are connected with each other via conductor wires, and each ring of the scale-shaped metal sheets at a horizontal layer is provided with an open circuit. Via the above mode, the air bag type metal scale extreme high voltage equalizing shield can be conveyed without being disassembled, on-site assembling operation is not required, and the voltage equalizing shield can come to service after being inflated.

Description

technical field [0001] The invention relates to the field of electrical technology and high-voltage electricity, in particular to an ultra-high voltage equalizing cover which not only adopts metal conductors to equalize pressure, but also can be inflated and formed, deflated and contracted for storage and transportation. Background technique [0002] The equalizing cover is an electrical structural device with a smooth curved surface conductor (layer) installed at the AC or DC high voltage output terminal and the connection of high voltage components to eliminate or reduce tip discharge or corona. According to the principle of electric field intensity distribution, the higher the voltage, the larger the radius of curvature of the surface of the pressure equalization cover is required, that is, the larger the geometric size of the pressure equalization cover. Therefore, the diameter of the voltage equalizing cover used for ultra-high voltage is usually several meters, and the...

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Problems solved by technology

Therefore, the diameter of the pressure equalizing cover used for ultra-high voltage is usually several meters, and the whole cannot be transported normally, and it is difficult to install at a high position, which affects the field use

Although the general inflatable soft pressure equalizing cover can shrink, but because conductive rubber or modified plastic is used as the equalizing conductive layer, the resistivity is relatively large, and the equalizing effect is not good.

However, the pressure equalizing cover coated with conductive paint or adhesively applied conductive fiber cloth on the surface of the inflatable body has defects such as uneven pressure of the conductive layer, easy wear, fluffing and cracking, etc. Defects such as aging

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