Gas ultrasonic drum-shaped transducer

A gas ultrasonic drum-shaped transducer structure belongs to the technical field of metering instruments and comprises a low-density material layer, a drum-shaped outer shell and a piezoelectric ceramic piece. And the low-density material layer is fixed on the outer wall of the metal drum-shaped outer shell. And the piezoelectric ceramic piece is fixed on the inner wall of the metal drum-shaped outer shell. And one end of the first electric wire is fixed below the piezoelectric ceramic piece. And one end of the second electric wire is fixed on the drum-shaped shell. The density of the low-density solid material layer is larger than that of gas and smaller than that of solid. The resistance of the outer wall of the outer shell of the gas ultrasonic drum-shaped transducer is small, when vibration is generated, enough space for deformation is provided, and the vibration starting effect is good. 一种气体超声波鼓形换能器结构，属于计量仪表技术领域，包括低密度材料层、鼓形外壳体和压电陶瓷片。低密度材料层固定于金属鼓形外壳体外壁。压电陶瓷片固定于金属鼓形外壳体内壁。第一电线的一端固定在压电陶瓷片下方。第二电线的一端固定在鼓形壳体上。低