Continuous wrapping and binding method for ultrahigh voltage converter transformer iron core column

Abstract

The invention relates to a continuous wrapping and binding method for an ultrahigh voltage converter transformer iron core column, and belongs to the technical field of transformers. The invention adopts the technical scheme that: after being completely stacked, the iron cores are clamped by a clamping device and raised, a proper tensioning force of a binding belt is regulated through a binding machine, and an iron core column is semi-lapped to the specified thickness and height. The method has the advantages that: the proper tensioning force is regulated through the binding machine, and the binding belt is continuously semi-lapped to the specified thickness and height on the iron core column to meet the safety and the reliability of a converter transformer iron core stack; the method hasthe characteristics of good manufacturability, easiness in operation, low binding thickness, reduction of a binding space, uniform binding force, good electrode shape and the like; and pressure can be effectively applied to the iron core, so that the iron core column is approximately circular, and the purpose of improving the electrode shape of the iron core column is further realized.

Description

Technical field: [0001] The invention relates to a continuous wrapping and binding method for an ultra-high voltage converter transformer core column, which belongs to the technical field of transformers. Background technique: [0002] At present, the core columns of large-capacity core transformers are fixed in a nearly circular shape by binding straps, which exert pressure on the core columns. In the conventional transformer winding structure, the core column straps are bound in sections. This structure requires binding at the slots of the round bar stays outside the core column, one band in each slot, and at the top and bottom positions of the core column, the number of banding bands shall not be less than 3 in parallel. The distance to the main surface of the upper and lower yokes shall meet the current technological requirements. Although this kind of binding can meet the requirements, the binding force is uneven, the binding thickness is large, the electrode shape is ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for continuous wrapping and binding of UHV converter transformer core columns, which can improve the binding force and electrode shape, reduce the binding thickness, high process requirements and other difficulties, and solve the above-mentioned problems existing in the background technology