Method for preventing burning losses of threads of transformer plug base

Abstract

The invention relates to a method for preventing burning losses of threads of a transformer plug base and belongs to the field of machining and manufacturing of transformers. According to the technical scheme, the method comprises the steps of (1) inserting one end of the plug base (3) into a plug base installation hole of a transformer oil tank steel plate (2), and then welding an outer weld joint (4) between the plug base and the transformer oil tank steel plate; (2) after the outer weld joint is welded, screwing a double-screw bolt (1) into the plug base from the inside of a transformer oil tank and tightening the double-screw bolt; (3) welding an inner weld joint (5) between the plug base and the transformer oil tank steel plate; and (4) after welding is finished, screwing out the double-screw bolt, and cleaning the inside of the plug base through compressed air. The method has the advantages that the method is simple and practical, welding can be performed no matter how the oil tank is placed, the weld joints of the plug base are free of leakage, metallic or non-metallic foreign bodies are not mixed in the plug base, and the electrical performance of transformer operation can be guaranteed.

Description

technical field [0001] The invention relates to a method for preventing a thread buckle from being burned by a transformer plug seat, belonging to the field of transformer processing and manufacturing. Background technique [0002] The plug seat is an important part of the transformer oil tank. Its material is ordinary carbon steel, the wall thickness is 6mm ~ 10mm, and the inside is threaded. When welding, the plug seat is inserted into the steel plate of the transformer oil tank. Threads have little effect, while internal welding can greatly affect threads. First of all, the thread is easy to be burned, and secondly, some spatter will fall into the thread buckle, which will affect the assembly. In order to avoid the above situation, no welding is currently performed inside. Although no welding can ensure that the internal thread is not damaged, it will also bring some damage. Other problems, such as: single-side welding is not easy to ensure that the weld does not leak, a...

AI Technical Summary

Problems solved by technology

First of all, the thread is easy to burn, and secondly, some spatter will fall into the thread buckle, which will affect the assembly. In order to avoid the above situation, no welding is currently performed inside. Although no welding can ensure that the internal thread is not damaged, it will also bring some damage. Other problems, such as: single-sided welding is not easy to ensure that the weld does not leak, foreign particles in the gap are not easy to clean up, affecting the electrical performance of the transformer, etc.

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