提出带孔盖板的自由液浸式环氧灌注的圆柱管形换能器声学结构模型。根据电声类比电路阐明圆柱换能器液腔的耦合作用;计算了换能器的谐振频率,并根据类比电路求出换能器腔口和柱面容积速度的比值,计算了换能器的辐射方向性。理论计算结果和实验进行比较,吻合较好。 The acoustic structural model of free-liquid immersion epoxy tubular perforated tubular transducer with perforated cover is proposed. According to the analog circuit of the electro-acoustic analogy, the coupling action of the liquid chamber of the cylindrical transducer is elucidated. The resonant frequency of the transducer is calculated. According to the ratio circuit, the ratio of the cavity diameter to the cylinder volume is calculated. Radiation directivity. The calculated results are in good agreement with the experimental ones.