Small-bore ultrasonic water meter

The invention discloses a small-bore ultrasonic water meter. The water meter comprises a meter lid and a meter shell, the meter shell comprises an upper outer shell, a lower outer shell and an ultrasonic flow reflection device installed between the upper outer shell and the lower outer shell, the ultrasonic flow reflection device comprises a reflection shell, a fluid channel is formed in the reflection shell, the ultrasonic flow reflection device comprises an ultrasonic probe and a reflection body, the ultrasonic probe is embedded into the side wall, close to the upper outer shell, of the fluid channel and sealed through glue filling, and the reflection body is axially installed at an end opening of the fluid channel along the fluid channel and fixed into the fluid channel through a supporting frame. The small-bore ultrasonic water meter is good in seal performance and high in measurement precision because the ultrasonic probe does not contact with fluid media. 本发明公开了种小口径超声水表，包括表盖、表壳，表壳包括上外壳、下外壳和安装于上、下外壳之间的超声