IDLE SPEED AND NOZZLE DEVICE FOR WIND TUNNEL AND CONTROL METHOD THEREFOR

摘要

An idle speed and nozzle device for a wind tunnel and a control method therefor, the device comprising an idle speed mechanism (1) and a nozzle mechanism (2), a main flow channel (11) sequentially penetrating the idle speed mechanism (1) and the nozzle mechanism (2); the idle speed mechanism (1) comprises idle speed door bodies (14) and an idle speed drive assembly, two idle speed door bodies (14) being arranged on two sides of the main flow channel (11); the idle speed drive assembly drives the idle speed door bodies (14) to move oppositely until fitting, the main flow channel (11) being closed; or the idle speed drive assembly drives the idle speed door bodies (14) to move back to back to the main channel (11) to be fully opened, an airflow flowing from the main flow channel (11); the nozzle mechanism (2) comprises nozzle modules (241, 242) and a nozzle drive assembly, the two nozzle modules (241, 242) being arranged on two sides of the main flow channel (11); the nozzle drive assembly drives the nozzle module (11) to move oppositely until fitting so as to form a small nozzle, or the nozzle drive assembly drives the nozzle modules (241, 242) to move back to back to the main flow channel (11) to be fully opened so as to form a large nozzle. Thus, the free switching between a large and small nozzle is achieved, and the idle speed mechanism is compact in structure, while the manner of driving the idle speed door bodies is simple, accurate and efficient.