Sealing structure of natural ester insulating oil transformer

Abstract

The invention provides a sealing structure of a natural ester insulating oil transformer, and the structure comprises a wire outlet box, a wire outlet box flange arranged at the top of the wire outlet box, a cover plate arranged at the top of the wire outlet box and matched with the wire outlet box flange for use, sealing assemblies arranged on the contact surface of the wire outlet box flange and the cover plate, and a fastener which penetrates through the cover plate box and the outlet box flange and is used for fixing the outlet box flange and the cover plate; wherein each sealing assembly comprises at least two sealing washers which are tightly connected with the cover plate along the end face of the outlet box flange, and the outer diameter of the sealing washers is between the inner diameter of the outlet box flange and the outer diameter of the outlet box flange. The sealing assemblies are arranged in the circumferential direction of the end face of the outlet box flange, the sealing washers in the sealing assemblies can be fully connected between the outlet box flange and the cover plate in a sealed mode under the action of the fasteners, compression is sufficient, the sealing performance is good, and the risk of oil leakage of the outlet box is reduced.

Description

technical field [0001] The invention relates to the technical field of transformer sealing, in particular to a sealing structure of a natural ester insulating oil transformer. Background technique [0002] The outlet box is an important part of the liquid-immersed transformer, which plays the role of loading the winding outlet and the connection part of the bushing tail. Its sealing performance is very important. In the prior art, the following problems exist in the sealing of the transformer outlet box: 1. The outlet box adopts a gasket sealing structure, and oil leakage is prone to occur after the gasket is aged or broken; 2. The gasket uses a flat Long structure, low deformation, not strong enough sealing. Therefore, it is necessary to design a sealing structure suitable for natural ester insulating oil transformers to solve the problem of insufficient sealing of transformer outlet boxes in the prior art. Contents of the invention [0003] The invention provides a nat...

AI Technical Summary

Problems solved by technology

Its sealing performance is very important. In the prior art, the following problems exist in the sealing of the transformer outlet box: 1. The outlet box adopts a gasket sealing structure, and oil leakage is prone to occur after the gasket is aged or broken; 2. The gasket uses a flat Long structure, low deformation, not strong enough sealing

Therefore, it is necessary to design a sealing structure suitable for natural ester insulating oil transformers to solve the problem of insufficient sealing of transformer outlet boxes in the prior art

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