High-tension porcelain insulator for oil permeation preventing transformer

Abstract

The invention is mainly applied to the field of transformers and especially relates to a high-tension porcelain insulator for an oil permeation preventing transformer. The high-tension porcelain insulator comprises a conducting rod, wherein a porcelain insulator body is sleeved on the conducting rod, a nut is arranged at the top of the porcelain insulator body, a location disk is arranged at the bottom of the porcelain insulator body, and a porcelain sleeve and a sealing pad are sequentially arranged between the nut and the porcelain insulator body from top to bottom; the nut, the location disk, the porcelain sleeve and the sealing pad are all sleeved on the conducting rod; oilphobic paint layers are arranged on the contact face between the sealing pad and the porcelain body and the contact face between the sealing pad and the porcelain sleeve; the contact face between the upper end of the porcelain insulator body and the conducting rod is coated by an oilphobic paint layer. Accordingto the high-tension porcelain insulator disclosed by the invention, the oilphobic paint layers can generate oilphobic resistance, so that cooling oil permeation is effectively stopped; thus, cooling oil permeation is not prone to happening, surrounding environment cleanness is ensured, and service life of the high-tension porcelain insulator is also prolonged.

Description

technical field [0001] The invention relates to an anti-seepage oil transformer high-voltage porcelain bottle, which is mainly used in the field of transformers. Background technique [0002] At present, such a transformer high-voltage porcelain bottle is disclosed on the market. Its structural characteristics are: it is composed of a conductive rod, a nut, a porcelain sleeve, a positioning plate, a honey gasket and a porcelain bottle. The conductive rod is placed in the porcelain bottle, and the nut is set through one end of the conductive rod. On the top of the porcelain bottle, the positioning plate is installed under the porcelain bottle through the other end of the conductive rod, the porcelain sleeve and the honey seal are arranged on the conductive rod between the nut and the porcelain bottle, the porcelain sleeve is under the nut, and the sealing gasket is set between the porcelain sleeve and the porcelain bottle The conductive rod is filled with cooling oil in the p...

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Problems solved by technology

[0002] At present, such a transformer high-voltage porcelain bottle is disclosed on the market. Its structural characteristics are: it is composed of a conductive rod, a nut, a porcelain sleeve, a positioning plate, a honey gasket and a porcelain bottle. The conductive rod is placed in the porcelain bottle, and the nut is set through one end of the conductive rod. On the top of the porcelain bottle, the positioning plate is installed under the porcelain bottle through the other end of the conductive rod, the porcelain sleeve and the honey seal are arranged on the conductive rod between the nut and the porcelain bottle, the porcelain sleeve is under the nut, and the sealing gasket is set between the porcelain sleeve and the porcelain bottle On the conductive rod, the porcelain sleeve is filled with cooling oil, but this structure is prone to leakage of cooling oil, affecting the surrounding environment, and at the same time, reducing the service life of the high-pressure porcelain bottle

Patent CN200920181469.4 has announced a way to prevent oil leakage by adding a T-shaped sealing ring in the axial section, but this technology cannot effectively prevent oil leakage through the gap of the sealing surface

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