Small and medium-size transformer oil tank

Abstract

The invention discloses a small and medium-size transformer oil tank which is simple in structure, safe to use and long in service life. The small and medium-size transformer oil tank comprises a tank body; wherein the tank body is provided with an upward opening; the periphery of the opening of the tank body is connected with tank edges; the tank edges and the tank body are of an integrated structure; a tank cover is connected above the tank edges by tank edge bolts; a sealing rubber pad is arranged between the tank cover and each tank edge; the periphery of the tank cover is connected with a bending surface; the bending surface and the tank cover are of the integrated structure; the sealing rubber pads are positioned in spaces formed by the bending surface and the tank cover; the lower edge line of the bending surface is not higher than the lowest end of each of the tank edge blots; in the length direction, the tank cover is high in middle and low in two ends; the connecting part of the bending surface and the tank cover is an arc surface; and an included angle of the bending surface and the horizontal surface is 60 degrees. According to the small and medium-size transformer oil tank, the conventional flat plate type structure is improved to be a structure that the tank cover edges are respectively provided with the bending surface, the accident damage during the device transportation is alleviated, and the sealing rubber pad is protected in the spaces formed by the bending surface, so that the sun-scorched and rain-drenched conditions can be effectively avoided.

Description

technical field [0001] The invention relates to an oil tank, in particular to a medium and small transformer oil tank. Background technique [0002] As the shell of the oil-immersed transformer, the oil tank is welded by steel plates. Its structure not only has a certain mechanical strength and meets some requirements of the transformer during operation, but also meets some necessary conditions of the transformer during maintenance and transportation. As the upper cover of the small and medium-sized transformer oil tank, the box cover is fastened to the box body by the box edge bolts and sealing rubber pads around the box edge, which plays an important role in the safety of the transformer during transportation and the sealing performance during operation. Crucial role. [0003] The current design of the transformer box cover mostly adopts a flat structure. In order to increase the strength of the box cover, the only way is to increase the thickness of the steel plate. Duri...

AI Technical Summary

Problems solved by technology

[0003] The current design of the transformer box cover mostly adopts a flat structure. In order to increase the strength of the box cover, the only way is to increase the thickness of the steel plate. During the transportation of the transformer, especially for the medium-sized transformer with a detachable radiator, the box cover is more It is the outer limit of the transformer transportation, and it is extremely vulnerable to bumping and deformation during abnormal transportation, which is fatal to the transformer itself

In addition, in the operation and maintenance of the transformer, the aging degree of the sealing rubber pad in the transformer is often used to determine the maintenance period, and the largest, longest and most important seal in the transformer is the sealing rubber pad between the box cover and the box edge. However, the flat structure of the box cover inherently causes the sealing rubber pad to be easily exposed to sunlight, wind and rain, and is inevitably damaged by natural conditions.

To sum up, whether it is for the manufacturer or the user, there will be some direct or potential losses and risks

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