| 摘要 |
An ultrasonic flow meter, comprises a spool piece having a throughbore and a transducer port. The flow meter comprises a transducer assembly, disposed within the transducer port, which comprises a transformer, a piezoelectric element, and an electrical coupling therebetween. The transducer assembly provides a first fluid barrier which separates the transducer port into a first portion proximal the throughbore and a second portion distal the throughbore, and the first fluid barrier restricts fluid communication between the throughbore and the second portion. The flow meter further comprises a port cover assembly coupled to the transducer assembly, wherein the port cover assembly receives a cable for carrying a signal created by the piezoelectric element to a remote location external to the spool piece. The port cover assembly comprises a tubular member releasably coupled to the transducer assembly, a cover cap releasably coupled to the tubular member, and a spring compressed therebetween. The cover cap comprises a circular body with a passage formed therein. A grommet is disposed in the passage and the cable extends through the grommet. The grommet sealingly engages the cover cap and the cable. An annular seal assembly positioned between the cover cap and the spool piece. |
