Oil seal structure and oil seal method for cooling transformer

Abstract

The invention discloses an oil seal structure and an oil seal method for a cooling transformer, comprising an upper cover plate, the upper cover plate is arranged in the inner cavity of an oil tank of a transformer, and the long side of the upper cover plate is connected with a long axis side oil seal One end of the cardboard, the other end of the oil seal cardboard on the long axis side is in contact with the bottom inner wall of the fuel tank, one end of the oil seal cardboard on the short axis side is connected to the broad side of the upper cover plate, and the other end of the oil seal cardboard on the short axis side One end is in contact with the bottom inner wall of the oil tank, the oil seal cardboard on the long axis side, the oil seal cardboard on the short axis side, the upper cover plate and the inner wall at the bottom of the oil tank of the transformer enclose the cavity of the synthetic oil seal structure, the other end of the oil seal cardboard on the long axis side and The other end of the oil seal cardboard on the side of the short axis is bent toward the cavity inner cavity of the oil seal structure, and the upper cover plate and the inner wall of the bottom of the oil tank are connected by a support member. The invention has low manufacturing cost, and the cavity of the oil seal structure has scalability, which ensures a stable flow rate of oil entering the coil.

Description

technical field [0001] The invention belongs to the technical field of transformer process manufacturing, in particular to an oil seal structure and an oil seal method for cooling a transformer. Background technique [0002] The oil seal structure of the cooling transformer can quickly take away the heat generated by the transformer to ensure the safe and stable operation of the transformer. The conventional oil seal structure is to weld the cavity on the clamp, and then open a hole on the lower pressure plate of the body, and use the oil pump to transfer the cooling The oil is injected into the cavity, and the cold oil reaches various parts of the transformer coil through the cavity and the pressure plate hole. However, due to the complicated welding process and high cost of this structure, and if the thickness of the lower pressure plate is too small, the flow rate of the injected cold oil into the coil If it is too fast, turbulent flow will appear, which will pose a poten...

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Problems solved by technology

[0003] In order to solve the problems existing in the prior art, the present invention provides an oil seal structure and an oil seal method for a cooling transformer, which solves the problem that the current oil seal structure of a cooling transformer causes the flow rate of cold oil to enter the coil to be too fast, which easily causes turbulent flow and relatively low cost. high problem

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