The invention relates to the technical field of dry-type transformers, and discloses a high-heat-dissipation dry-type
transformer which comprises a
transformer body and fixing supports arranged at the upper end and the lower end of the
transformer body, the transformer body comprises an iron core, a low-
voltage winding, a heat dissipation cylinder and a high-
voltage winding, and the heat dissipation cylinder comprises a lower air inlet cavity, an upper air outlet cavity and a heat dissipation cavity. The heat dissipation cavity comprises a first heat dissipation shell and a second heat dissipation shell, a first annular cavity is formed between the first heat dissipation shell and the second heat dissipation shell, a second annular cavity is formed between the second heat dissipation shell and the high-
voltage winding, multiple sets of rotary
air cooling assemblies are arranged in the second annular cavity in the circumferential direction, and multiple air guide blades are rotationally arranged at air outlets of the rotary
air cooling assemblies; the rotary
air cooling assembly is provided with a driving
assembly for driving the air guide blades to swing up and down, so that the
airflow direction of the rotary air cooling
assembly can be changed, and balanced and rapid heat dissipation is achieved. According to the heat dissipation cylinder, the
airflow channel of the first annular cavity is matched with the rotary air cooling assembly capable of changing the
airflow direction of the second annular cavity for heat dissipation, and the heat dissipation uniformity is improved.