A method for manufacturing and processing a metal shell of a power transformer

Abstract

The invention relates to a method for manufacturing and processing a metal shell of a power transformer, which mainly includes the following steps: overall design, preparation work, forming treatment, grinding operation, welding treatment and other processes. The used shell grinding equipment includes a bottom plate and a docking device , positioning device, telescopic device and grinding device, the present invention can solve the following difficult problems existing in the grinding and welding of existing heat pipes and transformer boxes, a, traditional heat pipes and transformer boxes need to be manually held when grinding For the cooling pipe and the transformer box, use a grinding machine to grind the connection between the cooling pipe and the transformer box. The labor intensity of the workers is too high, the grinding time is long, and the installation efficiency is not high; b. The existing cooling pipe and the transformer box During welding, the welding machine is manually used to weld the connection between the heat dissipation pipe and the transformer box, and the connection between the heat dissipation pipe and the transformer box is unstable, which affects the heat dissipation function of the transformer.

Description

technical field [0001] The invention relates to the technical field of power transformer production, in particular to a method for manufacturing and processing a metal shell of a power transformer. Background technique [0002] The power transformer is one of the main equipment of the power grid. Its safe and stable operation plays a very important role in the safety of the power system. Due to the principle of electromagnetic induction of the transformer, it will inevitably lead to partial heating of the transformer under certain conditions. The most common one is the transformer oil tank. The bolts connected to the base heat up. Long-term overheating of the bolts here will lead to cracking and damage of the sealing rubber pad. When the ambient temperature changes greatly, it may cause transformer oil leakage. Operation causes hidden dangers, so the heat dissipation pipe is welded on the transformer box. Before welding the heat dissipation pipe, the connection end of the he...

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Problems solved by technology

[0003] However, the following difficult problems exist in the grinding and welding of existing heat pipes and transformer boxes. Grinding the connection between the pipe and the transformer box body, this method of manually holding the heat dissipation pipe and the transformer box body will cause excessive labor intensity for workers, long grinding time, and low installation efficiency; b, the existing heat dissipation pipe and When the transformer box is welded, it is necessary to manually hold the heat dissipation pipe and the transformer box, and manually use a welding machine to weld the connection between the heat dissipation pipe and the transformer box, making the connection between the heat dissipation pipe and the transformer box unstable. , which reduces its actual positioning accuracy and affects the heat dissipation function of the transformer

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