Transformer core structure

Abstract

The application relates to the technical field of transformers, in particular to a transformer core structure which comprises a frame, two side columns, a core column, an upper iron yoke and a lower iron yoke are arranged in the frame, an oil guiding mechanism for directly guiding oil into the inside of the side column, the core column, the upper iron yoke and the lower iron yoke is arranged on the frame, the oil supply assembly of the application actively pumps cooling oil into a rectangular oil guiding groove arranged in the inside of the core, so that the cooling oil directly contacts and exchanges heat with the inside of the core; and the oil is guided by the oil conveying pipe, so that the oil first contacts the inside center position of the core, then the oil flows to both ends along the pipeline assembly under the action of oil pressure, efficient heat dissipation of the core from the inside to the outside is realized, and the stable operation of the transformer is guaranteed.

Claims

1. A transformer core structure, characterized in that, The frame includes two side columns, one core column, an upper yoke, and a lower yoke. The side columns, core column, upper yoke, and lower yoke are all made of stacked silicon steel sheets. The frame is equipped with an oil guiding mechanism that directly guides oil into the side columns, core column, upper yoke, and lower yoke. The side pillar, core pillar, upper yoke, and lower yoke are all provided with rectangular oil guide grooves. The rectangular oil guide grooves have a U-shaped structure, which allows the cooling oil to flow from inside the rectangular oil guide grooves to the front of the side pillar, core pillar, upper yoke, and lower yoke. Pipeline components are arranged inside the rectangular oil guide grooves. The oil guiding mechanism includes two oil supply components fixedly installed at the front of the frame and arranged symmetrically in the upper and lower parts, and an oil delivery pipe set inside the pipeline assembly. The oil delivery pipe is connected to the oil supply components at the corresponding positions and is used to directly deliver oil to the center position of the pipeline assembly. The oil pipeline consists of an inner L-shaped pipe and an outer oil drain cylinder. The oil drain cylinder has multiple sets of oil holes evenly spaced along its length, and the diameter of the oil holes gradually decreases from the middle of the pipeline assembly to both ends. Two oil drain cylinders located in the same pipeline assembly are rotatably connected to a grooved cylinder at their close ends. Two propellers are fixedly installed inside the grooved cylinder, and the propellers are located in the corresponding L-shaped pipes. Two symmetrically arranged spiral plates are fixedly installed on the outside of the groove cylinder. The spiral plates are located outside the corresponding oil drain cylinder and the two do not contact each other. The oil inside the L-shaped pipe drives the propeller to rotate the grooved cylinder, which in turn drives the spiral plate to rotate, thereby pushing the oil from the middle of the pipeline assembly to both ends. The oil is directly supplied to the side pillars, core pillars, upper yoke, and lower yoke to cool them directly from the inside.

2. The transformer core structure according to claim 1, characterized in that, The pipeline assembly consists of four support plates arranged in a rectangular tube, each of which is made up of several stacked silicon steel sheets.

3. A transformer core structure according to claim 2, characterized in that, The support plate has several protruding structures on one side and several recessed structures on the other side. The protruding structures of two adjacent support plates are inserted into the recessed structures to achieve splicing of the four support plates.

4. A transformer core structure according to claim 1, characterized in that, When the side posts, core posts, upper yoke and lower yoke are stacked to half the height, the assembled pipeline assembly is buried inside the rectangular oil guide groove.

5. A transformer core structure according to claim 1, characterized in that, The oil supply assembly includes a conduit fixedly installed on the front side of the frame, and a miniature oil pump is fixedly installed on the frame. The oil outlet of the miniature oil pump is connected to the corresponding conduit.

6. A transformer core structure according to claim 5, characterized in that, The oil pipeline is connected to the corresponding conduit at one end of the front of the frame.

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