Coreless low-speed wind tunnel device

The utility model discloses a coreless low-speed wind tunnel device, relates to the technical field of wind tunnel equipment, and mainly aims to provide a coreless low-speed wind tunnel device which forms negative pressure as a power source in a positive pressure air supply mode so as to reduce noise and vibration. According to the main technical scheme, the coreless low-speed wind tunnel device comprises a wind tunnel component, the wind tunnel component comprises a contraction section, a test section and a diffusion section, and the test section is arranged between the contraction section and the diffusion section; the power component comprises a power shell, a plurality of connecting pipelines and a plurality of fan components, the power shell comprises a first air outlet pipeline and a connecting ring, one end of the first air outlet pipeline is connected to the connecting ring, the connecting ring is provided with a second air outlet pipeline and a plurality of air inlet pipelines, and the diffusion sect