Vibration reduction overflow device for airflow collector of high-speed free jet flow wind tunnel test cabin

The invention discloses a vibration damping overflow device for an airflow collector of a high-speed free jet flow wind tunnel test chamber, which comprises a cylinder for communicating a straight section and a collector, one end part of the cylinder is symmetrically provided with a plurality of vibration damping overflow holes, and the other end part of the cylinder is provided with an adjusting assembly for adjusting the opening degree of each vibration damping overflow hole. According to the invention, airflow low-frequency pressure pulsation is effectively inhibited, the effect of reducing the vibration of the collector is realized, the flow field quality of the high-speed free jet wind tunnel is improved, a guarantee is provided for safe and reliable operation of high-speed free jet wind tunnel equipment, and the device has the beneficial effects of reasonable structure, excellent performance and reliable operation. 本发明公开了用于高速自由射流风洞试验舱气流收集器减振溢流装置，包括用于连通平直段和收集器的筒体，所述筒体的一端部对称的开设有多个减振溢流孔，且所述筒体的另一端部设置有用于调整各所