Butt joint structure and butt joint method for extra-high voltage bushing and lead device of converter transformer

Abstract

The invention relates to a butt joint structure and a butt joint method for an extra-high voltage bushing and a lead device of a converter transformer. The butt joint structure comprises an insulating paperboard and a support, the insulating paperboard is in an annular plate shape, a plurality of through holes are formed in the insulating paperboard, the support comprises a bottom plate and a plurality of guide plates, the bottom plate is in an annular plate shape, the insulating paperboard is placed on the bottom plate, the guide plates extend from the bottom plate to one side, the guide plates penetrate through the through holes in the insulating cardboard, the guide plates correspond to the through holes one to one, the guide plates are evenly arranged in the circumferential direction of the bottom plate, and positioning protrusions are arranged on the inner wall faces of the guide plates. The butt joint structure has alignment and guiding effects on the sleeve, the positioning protrusion has a butt joint completion indication effect, it can be guaranteed that in the process that the sleeve is installed on the wire leading device, accurate alignment can be achieved, deviation and bumping damage caused when the sleeve is installed on the wire leading device can be reduced or eliminated, the sleeve and the wire leading device are assembled at a time without errors, and the mounting quality and efficiency are improved.

Description

technical field [0001] The invention relates to the technical field of transformers, in particular to a butt joint structure and a butt joint method of a converter transformer UHV bushing and a lead wire device. Background technique [0002] In high-voltage transformers, the connection position between the converter UHV bushing and the lead device is 2-3 meters away from the end of the lead device, and there are often many insulating paper tubes and other structures arranged around the connection position. When installing on the lead device, the bushing is usually blindly inserted into the lead device based on the experience of the installer. Since the butt joint position is deep inside and cannot be seen, it is often not possible to align it at one time during the installation process, and dimensional deviations often occur, colliding with the butt joint. Other structures around the location often damage or damage other structures, which affects the quality, delivery time a...

AI Technical Summary

Problems solved by technology

[0002] In high-voltage transformers, the connection position between the converter UHV bushing and the lead device is 2-3 meters away from the end of the lead device, and there are often many insulating paper tubes and other structures arranged around the connection position. When installing on the lead device, the bushing is usually blindly inserted into the lead device based on the experience of the installer. Since the butt joint position is deep inside and cannot be seen, it is often not possible to align it at one time during the installation process, and dimensional deviations often occur, colliding with the butt joint. Other structures around the position often damage or damage other structures, which affects the quality, delivery time and cost of converter UHV bushings and lead devices

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