| 摘要 |
Ultrasound transducer applies to measuring devices, to liquid flow speed and level measuring in particular. In order to increase the operational reliability, ensuring the stable acoustic contact of the ultrasound transducer, consisting of a casing (1) where there is a sequentially installed protector (2), piezo element (3) and damper (4). A newly introduced base ring (6), aggregate (5), supportive disk (7) are sequentially put into the casing (1). There is a newly introduced holder (8) on one side connected to the casing (1). A cover (9) has a sealing ring (10), pressure unit (11), sequentially placed inside, and a gasket (12) through which the cover is connected to the other end of the holder (8). The protector manufactured of material, the thermal lengthening coefficient of which equals to the piezo element thermal lengthening coefficient, and pressed by the base ring (6). Damper (4) is pressed by the supportive disk (7) and has a conic shape and an aggregate (5), the thermal volume expansion coefficient of which is close to the casing's (1) thermal volume expansion coefficient. |
