Coil structure suitable for dry-type transformer

The invention belongs to the technical field of transformer coils, and relates to a coil structure suitable for a dry-type transformer. The coil structure comprises a low-voltage coil, a high-voltage coil, a support inner sleeve and a support outer sleeve; the periphery of the low-voltage coil is coated with the high-voltage coil; the support inner sleeve and the support outer sleeve are arranged between the outer peripheral wall of the low-voltage coil and the inner peripheral wall of the high-voltage coil; the support inner sleeve is arranged on the peripheral wall of the low-voltage coil in a sleeving mode; the support outer sleeve is attached to the inner circumferential wall of the high-voltage coil; a gap channel is formed between the support inner sleeve and the support outer sleeve; and the outer peripheral wall of the support inner sleeve is connected with the inner peripheral wall of the support outer sleeve through a plurality of supporting bridges. According to the coil structure suitable for the dry-type transformer, the support inner sleeve and the support outer sleeve are used for carrying out auxiliary supporting on the low-voltage coil and the high-voltage coil respectively, and the supporting bridges are adopted, so that winding and assembling of the low-voltage coil and the high-voltage coil are conveniently achieved; and a heat dissipation channel is formed through the gap channel between the support inner sleeve and the support outer sleeve, so that the heat dissipation effect is guaranteed.