Dry type transformer device using position sensors

The invention discloses a dry type transformer device using position sensors. The device comprises a shell (80) and multiple winding pillars (81), wherein a cooling exhaust fan (83) is arranged on the side wall of the shell (80), the multiple winding pillars (81) are evenly arrayed inside the shell (80) in the peripheral direction, a cooling blast device (82) is arranged at the bottom of the center surrounded by the multiple winding pillars (81), air is supplied to the cooling blast device (82) through an air conveying pipe (61), the cooling blast device (82) comprises an air inlet mouthpiece (6) and an air cavity ringlike shell (15) which is communicated with the air conveying pipe (61), the air cavity ringlike shell (15) is integrally provided with a bottom face ringlike part (152) and a tube-shaped part (151) which is located at the upper side, and an air communication cavity (150) is formed inside the tube-shaped part (151).