Supporting device for opening of drum-type oil tank

Abstract

The invention discloses a supporting device for an opening of a drum-type oil tank, comprising a left supporting piece, a right supporting piece, a connecting plate and an adjustable connecting shaft, wherein, the adjustable connecting shaft is fixed on the inner walls of the left and right supporting pieces; the connecting plate is fixed on the outer walls of the left and right supporting pieces; the outer walls of the lower parts of the left and right supporting pieces are matched with the inner wall of the opening; and the connecting plate is provided with a connecting hole connected with the edge of the oil tank. The supporting device provided by the invention has a simple structure, not only can provide a support for the opening of the tank to protect the opening from being damaged, but also is easy to disassemble and can not cause any influence on the opening after being disassembled. Especially the length of the supporting device can be adjusted, thus the supporting device can be applied to transformers with tank openings of various sizes, and has the advantages of wide use application and low use cost.

Description

technical field [0001] The invention relates to a tank opening supporting device used in the production of a large barrel type power transformer oil tank during transportation and transshipment. Background technique [0002] At present, large-scale transformer oil tanks are mainly divided into bell jar type and barrel type in terms of shape and structure. In the process of making, sanding, and painting, the tank must be turned over several times. During these times of turning over the tank, the tank mouth often faces inward (the inner diameter of the fuel tank becomes smaller) and outward (the inner diameter of the fuel tank becomes smaller) due to the weak strength of the tank mouth. Large) deformation. At the same time, the above two deformations often lead to the out-of-tolerance of the diagonal dimensions of the fuel tank, resulting in the inability to assemble with the upper fuel tank. Finally, it needs to be reshaped by means of flame heating or external force, so that...

AI Technical Summary

Problems solved by technology

[0002] At present, large-scale transformer oil tanks are mainly divided into bell jar type and barrel type in terms of shape and structure. In the process of making, sanding, and painting, the tank must be turned over several times. During these times of turning over the tank, the tank mouth often faces inward (the inner diameter of the fuel tank becomes smaller) and outward (the inner diameter of the fuel tank becomes smaller) due to the weak strength of the tank mouth. Large) deformation. At the same time, the above two deformations often lead to the out-of-tolerance of the diagonal dimensions of the fuel tank, resulting in the inability to assemble with the upper fuel tank. Finally, it needs to be reshaped by means of flame heating or external force, so that the diameter of the tank mouth meets the tolerance requirements. This process tends to prolong the production cycle of the product while increasing the manufacturing cost of the product

Sometimes in order to prevent the above-mentioned problems in the production process of the fuel tank, the channel steel is welded at the tank opening in advance as a temporary support before the tank is turned over, and the channel steel is removed after the fuel tank is completed; this method can prevent the tank mouth from being lowered. The effect of deformation, but the inner diameter of the barrel tank has no nominal size, so the channel steel is often used once and cannot be used again, causing a lot of waste and increasing the manufacturing cost

And after disassembly, the welding position needs to be polished, which is time-consuming and laborious, and affects the appearance of the transformer

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