Composite sound insulation and heat dissipation structure of oil-immersed transformer oil tank

The invention discloses a composite sound insulation and heat dissipation structure of an oil-immersed transformer oil tank. A heat conduction plate is fixedly mounted on the outer side of the oil tank; an extension plate is fixedly mounted in the heat conduction plate; a connecting block is fixedly mounted on the inner side of the extension plate; a sound insulation plate block is fixedly mountedon the inner side of the connecting block; and the sound insulation plate block is located in the oil tank. A water guide channel is fixedly installed on the outer side of the heat conduction plate,the bottom of the water guide channel is arranged in a connecting base, an installing plate is fixedly installed in the connecting base, a motor is fixedly installed at the bottom of the installing plate, an output shaft of the motor vertically extends downwards and is fixedly provided with fan blades, and the connecting base is provided with heat dissipation holes communicating the interior withthe exterior. The noise dis