Leakage test device and method of transformer oil tank

Abstract

The invention relates to a leakage test device and method of a transformer oil tank. The leakage test device and method of the transformer oil tank solves the problems that the manufacturing cost is increased due to the fact that sealing plates with different sizes are required to be arranged in the prior art. The leakage test device includes a test bed, the test bed is provided with a sealing plate allowing the transformer oil tank to be placed on with the bottom facing upwards and an opening facing downwards, and the leakage test device further includes a device support arranged on the upperpart of the test bed; the device support is provided with a pressurizing mechanism for jacking and pressing the transformer oil tank downwards on the sealing plate, the sealing plate is provided witha medium inlet pipe for feeding a leakage test medium through the opening of the transformer oil tank in sealing and penetrating modes, and the leakage test device further includes an discharge channel for being connected with an oil sample valve at the end, near the bottom, of the transformer oil tank for allowing air and the leakage test medium in the transformer oil tank to discharge; and sealing of transformer oil tanks with different specifications can be realized only by arranging the large-sized sealing plate, the sealing plates with different specifications are not required to be arranged, the manufacturing cost is lowered, and the leakage test efficiency is improved.

Description

technical field [0001] The invention relates to a leak testing device and a leak testing method for a transformer oil tank. Background technique [0002] In the power industry, the transformer oil tank is a welded structural part, and its weld seam has complex shape and long length. The transformer oil tank is filled with transformer oil when it is in use. Therefore, after the welding of the product is completed, all the weak points of leakage should be eliminated to ensure the welding quality of the transformer oil tank so that the transformer can operate safely and reliably. The transformer oil tank usually includes a box body with an opening, and an oil sample valve with a smaller aperture is provided on one end of the box body near the bottom, so that oil samples can be taken regularly to detect the performance of the transformer oil. [0003] At present, the pressure test of the transformer oil tank after welding generally adopts air pressure, water pressure or water-a...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a transformer oil tank leak test device to solve the problem of increased manufacturing cost caused by the need to equip sealing plates of different sizes in the prior art; it also provides a transformer oil tank leak test method

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